Patent EP0376437A2 successfully refreshed from Google Patents.
EP0376437A2
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An active matrix type liquid crystal display
Assignee: Sharp Corp
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Filing: 1989-08-10
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Granted: —
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Expires: 2009-08-10
Abstract
Abstract An active matrix type liquid crystal display device comprising a substrate on which picture element electrodes which are arranged in a matrix, TFTs which are respectively disposed in the vicinity of each picture element electrodes, and capacitor electrodes each of which is opposed to one portion of each of the picture element electrodes for producing an additional capacitor are formed. A dielectric lamination structure consisting of three insulating layers is formed between the picture element electrode and the capacitor electrode. The dielectric lamination structure includes a gate insulating layer formed on the gate electrode of the TFT and the capacitor electrode, and a protective insulating layer formed on the TFT.
Inventors
- 👤 Hiroaki Kato
- 👤 Toshihiko Hirobe
- 👤 Yoshitaka Hibino
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 14:23
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/136213
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
94 words
In an active matrix type liquid crystal display device comprising a substrate on which a plurality of picture element electrodes which are arranged in a matrix, switching elements which are respectively disposed in the vicinity of each of said picture element electrodes, and capacitor electrodes each of which is opposed to at least one portion of each of said picture element electrodes to produce an additional capacitor are formed, the improvements exist in that a dielectric lamination structure consisting of three insulating layers is formed between said picture element electrode and said capacitor electrode.
Claim 2
Dependent Claim
94 words
In an active matrix type liquid crystal display device comprising a substrate on which a plurality of picture element electrodes which are arranged in a matrix, switching elements which are respectively disposed in the vicinity of each of said picture element electrodes, and capacitor electrodes each of which is opposed to at least one portion of each of said picture element electrodes to produce an additional capacitor are formed, the improvements exist in that a dielectric lamination structure consisting of three insulating layers is formed between said picture element electrode and said capacitor electrode.
Claim 3
Dependent Claim
61 words
A device according to claim 1 wherein said switching element is a thin film transistor, the gate electrode of said thin film transistor and said capacitor electrode are disposed on an insulating substrate, and a gate insulating layer is formed on both said gate electrode and said capacitor electrode, said gate insulating layer being one of said three laminated insulating layers.
Claim 4
Dependent Claim
36 words
A device according to claim 2 wherein a protective insulating layer is formed on both said thin film transistor and said gate insulating layer, said protective insulating being another one of said three laminated insulating layers.
Claim 5
Dependent Claim
31 words
A device according to claim 3 wherein an anodic oxidation film is formed on said capacitor electrode, said anodic oxidation film being the further one of said three laminated insulating layers.
Claim 6
Dependent Claim
18 words
A device according to claim 3 wherein said picture element electrode is disposed on said protective insulating layer.
Claim 7
Dependent Claim
33 words
A device according to claim 5 wherein said picture element electrode is electrically connected to the drain electrode of said TFT, through a contact hole which is formed in said protective insulating layer.
Claim 8
Dependent Claim
88 words
An active matrix type liquid crystal display device comprising an array of display elements each including a display electrode connected to a respective adjacent one of a corresponding array of switching elements, said electrodes and switching elements being mounted on a common support substrate on which are also formed capacitor electrodes each disposed beneath a part of a respective said display electrode and separated from said display electrode by a laminated dielectric structure including a layer which extends as a protective insulating layer over the corresponding switching element.
Claim 9
Dependent Claim
88 words
An active matrix type liquid crystal display device comprising an array of display elements each including a display electrode connected to a respective adjacent one of a corresponding array of switching elements, said electrodes and switching elements being mounted on a common support substrate on which are also formed capacitor electrodes each disposed beneath a part of a respective said display electrode and separated from said display electrode by a laminated dielectric structure including a layer which extends as a protective insulating layer over the corresponding switching element.
References Cited (Backward Citations)
No citation records indexed.
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