EP0369828A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Active matrix liquid crystal display panel with an electrostatic protection circuit
Assignee: NEC Corp
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Filing: 1989-11-20
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Granted: —
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Expires: 2009-11-20
Abstract
Abstract An active-matrix liquid crystal display panel includes a matrix of pixel electrodes (5), data lines (1) connected to the pixel electrodes by respective first MIM diodes (6), address lines (7), a liquid crystal layer (15) inserted between the pixel electrodes and the address lines, wiring (2) on a peripheral portion of the display, and second protective MIM diodes (3) connected between the wiring and the data lines. The second diodes provide protection for the data lines from dielectric breakdown caused by electrostatic charges during manufacture.
Inventors
- 👤 Osamu C/O Nec Corporation Sukegawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 16:35
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1345; G02F1/136; G02F1/1362; G02F1/1365; G02F1/136204
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
129 words
An active matrix liquid crystal display panel comprising: a lower substrate; a plurality of pixel electrodes formed on a display portion of said lower substrate in a matrix form; a plurality of columns of first lines formed on said lower substrate, said first lines being connected respectively to said pixel electrodes of each column by first diodes; an upper substrate; a plurality of rows of second lines formed on said upper substrate, said second lines being provided respectively over each row of said pixel electrodes; a liquid crystal layer inserted between said pixel electrodes and said second lines; a wiring formed on a periphery portion of said lower substrate; said periphery portion being outside said display portion; and a second diode connected between said wiring and said first line.
Claim 2
Dependent Claim
129 words
An active matrix liquid crystal display panel comprising: a lower substrate; a plurality of pixel electrodes formed on a display portion of said lower substrate in a matrix form; a plurality of columns of first lines formed on said lower substrate, said first lines being connected respectively to said pixel electrodes of each column by first diodes; an upper substrate; a plurality of rows of second lines formed on said upper substrate, said second lines being provided respectively over each row of said pixel electrodes; a liquid crystal layer inserted between said pixel electrodes and said second lines; a wiring formed on a periphery portion of said lower substrate; said periphery portion being outside said display portion; and a second diode connected between said wiring and said first line.
Claim 3
Dependent Claim
26 words
An active matrix liquid crystal display panel as claimed in claim 1, wherein said first lines are data lines and said second lines are address lines.
Claim 4
Dependent Claim
23 words
An active matrix liquid crystal display panel as claimed in claim 2, wherein said first diodes and said second diode are metal-insulator-metal diodes.
Claim 5
Dependent Claim
22 words
An active matrix liquid crystal display panel as claimed in claim 3, wherein said insulator of said metal-insulator-metal diodes is silicon nitride.
Claim 6
Dependent Claim
28 words
An active matrix liquid crystal display panel as claimed in claim 4, wherein said silicon nitride for said first diode is the same composition as said second diode.
Claim 7
Dependent Claim
116 words
An active matrix liquid crystal display panel comprising: a lower substrate; a matrix of pixel electrodes formed on said lower substrate; data lines formed on said lower substrate, said data lines being connected to said pixel electrodes of each column by first metal-insulator-metal diodes, respectively; an upper substrate; address lines formed on said upper substrate, said address lines being provided over each row of said pixel electrodes; a liquid crystal layer inserted between said pixel electrodes and said address lines; a wiring formed on said lower substrate; and second metal-insulator-metal diodes formed on said lower substrate, each one of said second metal-insulator-metal diodes being connected between said wiring and each one of said data lines, respectively.
Claim 8
Dependent Claim
116 words
An active matrix liquid crystal display panel comprising: a lower substrate; a matrix of pixel electrodes formed on said lower substrate; data lines formed on said lower substrate, said data lines being connected to said pixel electrodes of each column by first metal-insulator-metal diodes, respectively; an upper substrate; address lines formed on said upper substrate, said address lines being provided over each row of said pixel electrodes; a liquid crystal layer inserted between said pixel electrodes and said address lines; a wiring formed on said lower substrate; and second metal-insulator-metal diodes formed on said lower substrate, each one of said second metal-insulator-metal diodes being connected between said wiring and each one of said data lines, respectively.
Claim 9
Dependent Claim
28 words
An active matrix liquid crystal display panel as claimed in claim 6, wherein said insulator of said first and second metal-insulator-metal diodes are the same silicon nitride composition.
Claim 10
Dependent Claim
102 words
An active matrix liquid crystal display panel comprising: a lower substrate; a matrix of pixel electrodes formed on said lower substrate; data lines formed on said lower substrate, said data lines being connected to said pixel electrodes of each column by first metal-insulator-metal diodes, respectively; an upper substrate; address lines formed on said upper substrate, said address lines being provided over each row of said pixel electrodes; a liquid crystal layer inserted between said pixel electrodes and said address lines; and second metal-insulator-metal diodes formed on said lower substrate, said data lines being connected to each other through said second metal-insulator-metal diodes.
Claim 11
Dependent Claim
102 words
An active matrix liquid crystal display panel comprising: a lower substrate; a matrix of pixel electrodes formed on said lower substrate; data lines formed on said lower substrate, said data lines being connected to said pixel electrodes of each column by first metal-insulator-metal diodes, respectively; an upper substrate; address lines formed on said upper substrate, said address lines being provided over each row of said pixel electrodes; a liquid crystal layer inserted between said pixel electrodes and said address lines; and second metal-insulator-metal diodes formed on said lower substrate, said data lines being connected to each other through said second metal-insulator-metal diodes.
Claim 12
Dependent Claim
28 words
An active matrix liquid crystal display panel as claimed in claim 8, wherein said insulator of said first and second metal-insulator-metal diodes are the same silicon nitride composition.
References Cited (Backward Citations)
No citation records indexed.
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