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US5894136A
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US
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Liquid crystal display having a bottom gate TFT switch having a wider active semiconductor layer than a conductive layer on same
Assignee: LG Display Co Ltd
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Filing: 1996-10-28
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Granted: 1999-04-13
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Expires: 2016-10-28
Abstract
Abstract A liquid crystal display includes a substrate, a gate electrode on the substrate, a gate insulating layer on the substrate and the gate electrode, a first semiconductor layer on the gate insulating layer, a second semiconductor layer on the first semiconductor layer, and a conductive layer on the second semiconductor layer. The conductive layer includes a data line and source and drain electrodes. The first semiconductor layer is wider than the conductive layer.
Inventors
- 👤 Han Chang Wook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:27
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/1368
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
55 words
A liquid crystal display comprising: a substrate; a gate electrode on the substrate; a gate insulating layer on the substrate and the gate electrode; a semiconductor layer on the gate insulating layer; and a conductive layer including at least a data line on the semiconductor layer, the semiconductor layer being wider than the conductive layer.
Claim 2
Dependent Claim
55 words
A liquid crystal display comprising: a substrate; a gate electrode on the substrate; a gate insulating layer on the substrate and the gate electrode; a semiconductor layer on the gate insulating layer; and a conductive layer including at least a data line on the semiconductor layer, the semiconductor layer being wider than the conductive layer.
Claim 3
Dependent Claim
18 words
The liquid crystal display according to claim 1, wherein the semiconductor layer is wider than the data line.
Claim 4
Dependent Claim
42 words
The liquid crystal display according to claim 1, wherein the semiconductor layer comprises: a first semiconductor layer on the gate insulating layer; and a second semiconductor layer on the first semiconductor layer, wherein the conductive layer is on the second semiconductor layer.
Claim 5
Dependent Claim
25 words
The liquid crystal display according to claim 3, wherein at least one of the first and second semiconductor layers is wider than the data line.
Claim 6
Dependent Claim
17 words
The liquid crystal display according to claim 3, wherein the first semiconductor layer includes an amorphous silicon.
Claim 7
Dependent Claim
20 words
The liquid crystal display according to claim 3, wherein the second semiconductor layer includes a high concentration n-type amorphous silicon.
Claim 8
Dependent Claim
21 words
The liquid crystal display according to claim 3, wherein the conductive layer further includes a source electrode and a drain electrode.
Claim 9
Dependent Claim
50 words
The liquid crystal display according to claim 7, further comprising: a passivation layer on an overall resultant surface of the substrate, the passivation layer having a contact hole over the drain electrode; and a pixel electrode over the passivation layer and connected to the drain electrode through the contact hole.
Claim 10
Dependent Claim
29 words
The liquid crystal display according to claim 7, further comprising: a pixel electrode contacting the drain electrode; and a passivation layer on an overall resultant surface of the substrate.
Claim 11
Dependent Claim
21 words
The liquid crystal display according to claim 7, wherein the first semiconductor layer is wider than the source and drain electrodes.
Claim 12
Dependent Claim
34 words
The liquid crystal display according to claim 3, wherein the first semiconductor layer is wider than the data line, and wherein the second semiconductor layer has substantially the same width as the data line.
Claim 13
Dependent Claim
27 words
The liquid crystal display according to claim 1, wherein, outside an active area of the liquid crystal display, the semiconductor layer is wider than the conductive layer.
Claim 14
Dependent Claim
89 words
A liquid crystal display comprising: a substrate; a gate electrode on the substrate; a gate insulating layer on the substrate and the gate electrode; a first semiconductor layer on the gate insulating layer; a second semiconductor layer on the first semiconductor layer; and a conductive layer on the second semiconductor layer, the conductive layer including a data line and source and drain electrodes, the first semiconductor layer being wider than the conductive layer, wherein the second semiconductor layer is formed with substantially the same width as the data line.
Claim 15
Dependent Claim
89 words
A liquid crystal display comprising: a substrate; a gate electrode on the substrate; a gate insulating layer on the substrate and the gate electrode; a first semiconductor layer on the gate insulating layer; a second semiconductor layer on the first semiconductor layer; and a conductive layer on the second semiconductor layer, the conductive layer including a data line and source and drain electrodes, the first semiconductor layer being wider than the conductive layer, wherein the second semiconductor layer is formed with substantially the same width as the data line.
Claim 16
Dependent Claim
50 words
The liquid crystal display according to claim 13, further comprising: a passivation layer on an overall resultant surface of the substrate, the passivation layer having a contact hole over the drain electrode; and a pixel electrode over the passivation layer and connected to the drain electrode through the contact hole.
Claim 17
Dependent Claim
29 words
The liquid crystal display according to claim 13, further comprising: a pixel electrode contacting the drain electrode; and a passivation layer on an overall resultant surface of the substrate.
Claim 18
Dependent Claim
30 words
The liquid crystal display according to claim 13, wherein the first semiconductor layer includes an amorphous silicon, and wherein the second semiconductor layer includes a high concentration n-type amorphous silicon.
Claim 19
Dependent Claim
95 words
A liquid crystal display comprising: a substrate; a gate electrode on the substrate; a gate insulating layer on the substrate and the gate electrode; a first semiconductor layer on the gate insulating layer; a second semiconductor layer on the first semiconductor layer; and a conductive layer on the second semiconductor layer, the conductive layer including a data line and source and drain electrodes, the first semiconductor layer being wider than the conductive layer, wherein the second semiconductor layer under the source and drain electrodes has substantially a same width as the source and drain electrodes.
Claim 20
Dependent Claim
95 words
A liquid crystal display comprising: a substrate; a gate electrode on the substrate; a gate insulating layer on the substrate and the gate electrode; a first semiconductor layer on the gate insulating layer; a second semiconductor layer on the first semiconductor layer; and a conductive layer on the second semiconductor layer, the conductive layer including a data line and source and drain electrodes, the first semiconductor layer being wider than the conductive layer, wherein the second semiconductor layer under the source and drain electrodes has substantially a same width as the source and drain electrodes.
Claim 21
Dependent Claim
50 words
The liquid crystal display according to claim 17, further comprising: a passivation layer on an overall resultant surface of the substrate, the passivation layer having a contact hole over the drain electrode; and a pixel electrode over the passivation layer and connected to the drain electrode through the contact hole.
Claim 22
Dependent Claim
29 words
The liquid crystal display according to claim 17, further comprising: a pixel electrode contacting the drain electrode; and a passivation layer on an overall resultant surface of the substrate.
Claim 23
Dependent Claim
30 words
The liquid crystal display according to claim 17, wherein the first semiconductor layer includes an amorphous silicon, and wherein the second semiconductor layer includes a high concentration n-type amorphous silicon.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-04-12 | 2002-10-12 | 2003-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-04-12 | 2006-10-12 | 2007-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-04-12 | 2010-10-12 | 2011-04-13 | $7700.00 | Window Closed / Lapsed |