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US6023308A Expired / Lapsed US ⏱️ 0.0 years remaining

Active matrix device with two TFT's per pixel driven by a third TFT with a crystalline silicon channel

Assignee: Semiconductor Energy Laboratory Co Ltd
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Filing: 1997-11-26
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Granted: 2000-02-08
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Expires: 2017-11-26
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Abstract

Abstract An active matrix device comprising a two signal lines (V D and V G ) formed over a substrate. The first signal line is connected to the gate (G1) of a first thin film transistor (Tr1) with a crystalline silicon channel. The second signal line is connected to the drain (D1) of the first thin film transistor. The source (S1) of the first thin film transistor is connected to the gate (G2) of a second thin film transistor (Tr2) with a crystalline silicon channel. A voltage supply line (V LC ) is connected to a drain (D2) of the second thin film transistor and a pixel electrode is connected to the source (S2) of the second thin film transistor. A driving circuit formed for driving the thin film transistors comprises a third film transistor (Tr3) with a crystalline silicon channel. Preferably, the channel width of the second thin film transistor is greater than the channel width of the first thin film transistor.

Inventors

  • 👤 Yasuhiko Takemura

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 19:59
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/13624; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G09G3/3648; H; H10; H10D; H10D86/00; H10D86/40; H10D86/441; H10D86/471; H10D86/60; G02F1/136245; G02F1/1368; G09G2300/00; G09G2300/08; G09G2300/0809

Claims Analysis

Total Claims: 49
Claim 1
Independent Claim 206 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first top-gate thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second top-gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 2
Dependent Claim 206 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first top-gate thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second top-gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 3
Dependent Claim 249 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first top-gate type thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second top-gate type thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 4
Dependent Claim 249 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first top-gate type thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second top-gate type thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 5
Dependent Claim 209 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first bottom gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second bottom gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 6
Dependent Claim 209 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first bottom gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second bottom gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 7
Dependent Claim 251 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first bottom gate type thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second bottom gate type thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 8
Dependent Claim 251 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first bottom gate type thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second bottom gate type thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 9
Dependent Claim 203 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 10
Dependent Claim 203 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 11
Dependent Claim 245 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 12
Dependent Claim 245 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 13
Dependent Claim 222 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first top-gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second top-gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a surface smoothing film formed over said first and second thin film transistors; a pixel electrode formed over said surface smoothing film wherein said pixel electrode is connected to a source of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 14
Dependent Claim 222 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first top-gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second top-gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a surface smoothing film formed over said first and second thin film transistors; a pixel electrode formed over said surface smoothing film wherein said pixel electrode is connected to a source of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 15
Dependent Claim 264 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first top-gate type thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second top-gate type thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a surface smoothing film formed over said first and second thin film transistors; a pixel electrode formed over said surface smoothing film wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 16
Dependent Claim 264 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first top-gate type thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second top-gate type thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a surface smoothing film formed over said first and second thin film transistors; a pixel electrode formed over said surface smoothing film wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 17
Dependent Claim 221 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first bottom gate thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second bottom gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a surface smoothing film formed over said first and second thin film transistors; a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 18
Dependent Claim 221 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first bottom gate thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second bottom gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a surface smoothing film formed over said first and second thin film transistors; a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 19
Dependent Claim 266 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first bottom gate type thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second bottom gate type thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a surface smoothing film formed over said first and second thin film transistors; a pixel electrode formed over said surface smoothing film wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 20
Dependent Claim 266 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first bottom gate type thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second bottom gate type thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a surface smoothing film formed over said first and second thin film transistors; a pixel electrode formed over said surface smoothing film wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 21
Dependent Claim 216 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a surface smoothing film formed over said first and second thin film transistors; a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 22
Dependent Claim 216 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a surface smoothing film formed over said first and second thin film transistors; a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 23
Dependent Claim 260 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a surface smoothing film formed over said first and second thin film transistors; a pixel electrode formed over said surface smoothing film wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 24
Dependent Claim 260 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a surface smoothing film formed over said first and second thin film transistors; a pixel electrode formed over said surface smoothing film wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon.
Claim 25
Dependent Claim 229 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first top-gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second top-gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon, wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 26
Dependent Claim 229 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first top-gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second top-gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon, wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 27
Dependent Claim 271 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first top-gate type thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second top-gate type thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon, wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 28
Dependent Claim 271 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first top-gate type thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second top-gate type thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon, wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 29
Dependent Claim 231 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first bottom gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second bottom gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon, wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 30
Dependent Claim 231 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first bottom gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second bottom gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon, wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 31
Dependent Claim 273 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first bottom gate type thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second bottom gate type thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon, wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 32
Dependent Claim 273 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first bottom gate type thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second bottom gate type thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon, wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 33
Dependent Claim 225 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon, wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 34
Dependent Claim 225 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon, wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 35
Dependent Claim 267 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon, wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 36
Dependent Claim 267 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and a driving circuit formed over said substrate for driving at least one of said first and second thin film transistors, said driving circuit comprising a third thin film transistor wherein a channel forming region of said third thin film transistor comprises crystalline silicon, wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 37
Dependent Claim 185 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first top-gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second top-gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; and a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 38
Dependent Claim 185 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first top-gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second top-gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; and a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 39
Dependent Claim 228 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first top-gate type thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second top-gate type thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 40
Dependent Claim 228 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first top-gate type thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second top-gate type thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 41
Dependent Claim 187 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first bottom gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second bottom gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 42
Dependent Claim 187 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first bottom gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second bottom gate type thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 43
Dependent Claim 229 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first bottom gate type thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second bottom gate type thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and wherein a channel of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 44
Dependent Claim 229 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first bottom gate type thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second bottom gate type thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and wherein a channel of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 45
Dependent Claim 182 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; and a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 46
Dependent Claim 182 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to a drain of said first thin film transistor; a second thin film transistor having a channel region comprising crystalline silicon formed over said substrate wherein a gate of said second thin film transistor is connected to a source of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to a drain of said second thin film transistor; and a pixel electrode formed over said substrate wherein said pixel electrode is connected to a source of said second thin film transistor; wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 47
Dependent Claim 224 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 48
Dependent Claim 224 words
An active matrix device comprising a substrate having an insulating surface; a first signal line extending over said substrate; a first thin film transistor having a channel region comprising crystalline silicon and a first pair of impurity regions formed over said substrate wherein a gate of said first thin film transistor is connected to said first signal line; a second signal line extending across said first signal line wherein said second signal line is connected to one of said first pair of impurity regions of said first thin film transistor; a second thin film transistor having a channel region comprising crystalline silicon and a second pair of impurity regions formed over said substrate wherein a gate of said second thin film transistor is connected to the other one of said first pair of impurity regions of said first thin film transistor; a voltage supply line formed over said substrate wherein said voltage supply line is connected to one of said second pair of impurity regions of said second thin film transistor; a pixel electrode formed over said substrate wherein said pixel electrode is connected to the other one of said second pair of impurity regions of said second thin film transistor; and wherein a channel width of said second thin film transistor is larger than a channel width of said first thin film transistor.
Claim 49
Independent Claim 20 words
The device according to any one of claims 1-24 further comprising a liquid crystal layer adjacent to said pixel electrode.

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