US5227899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal display device with low resistance film separated from one of two adjacent electrodes by an insulating film
Assignee: Sharp Corp
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Filing: 1991-09-05
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Granted: 1993-07-13
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Expires: 2011-09-05
Abstract
Abstract A liquid crystal display device which comprises a pair of translucent substrates which are each provided on their surfaces with a plurality of parallel linear transparent electrodes, the surfaces being covered with orientation films, the pair of translucent substrates being so arranged as opposing to each other that the extending directions of the linear transparent electrodes on the two substrates intersect, a liquid crystal composition being placed between the substrates, wherein each of regions between the linear transparent electrodes on at least one of the translucent substrates is shielded and cut off of light by a non-translucent low resistive conductive film which is electrically connected with one of the adjacent linear transparent electrodes defining the regions but is disconnected from the other of the adjacent electrodes by an insulating film.
Inventors
- 👤 Itoh Nobuyuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:56
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/134309; G02F1/134336; G02F1/1335; G02F1/133509; G02F1/133512
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
164 words
A liquid crystal display device comprising: a pair of substrates spaced from each other; each substrate having on its inner surface a plurality of linear transparent electrodes arranged in parallel, each pair of adjacent electrodes on said surface being separated, an insulating film overlaying the edge of one electrode of each adjacent pair, the insulating film covering the edge surface and a portion of the top surface of the electrode at the edge, a low resistance, conductive film electrically connected to the opposing edge of the adjacent electrode and extending across the separation between the electrodes to the edge of the electrode overlayed with the insulating film so that the conductive film substantially blocks the transmission of light between the transparent electrodes, an orientation film overlaying the electrodes, insulating films and conducting films on said substrate; said pair of substrates being opposingly disposed such that the electrodes on one substrate intersect the electrodes on the opposing substrate and having a liquid crystal composition therebetween.
Claim 2
Dependent Claim
164 words
A liquid crystal display device comprising: a pair of substrates spaced from each other; each substrate having on its inner surface a plurality of linear transparent electrodes arranged in parallel, each pair of adjacent electrodes on said surface being separated, an insulating film overlaying the edge of one electrode of each adjacent pair, the insulating film covering the edge surface and a portion of the top surface of the electrode at the edge, a low resistance, conductive film electrically connected to the opposing edge of the adjacent electrode and extending across the separation between the electrodes to the edge of the electrode overlayed with the insulating film so that the conductive film substantially blocks the transmission of light between the transparent electrodes, an orientation film overlaying the electrodes, insulating films and conducting films on said substrate; said pair of substrates being opposingly disposed such that the electrodes on one substrate intersect the electrodes on the opposing substrate and having a liquid crystal composition therebetween.
Claim 3
Dependent Claim
22 words
A liquid crystal display device according to claim 1 wherein the low resistive conductive film has resistivity less than 10 7 Ω.cm.
Claim 4
Dependent Claim
22 words
A liquid crystal display device according to claim 1 wherein the low resistive conductive film is made of molybdenum, aluminum or titanium.
Claim 5
Dependent Claim
22 words
A liquid crystal display device according to claim 1 wherein the low resistive conductive film is 100 to 10000 Å in thickness.
Claim 6
Dependent Claim
38 words
A liquid crystal display device according to claim 1 wherein the insulating film is made of Ta 2 O 5 , Al 2 O 3 , ZnO, Y 2 O 3 , SiO 2 or SiN x .
Claim 7
Dependent Claim
26 words
A liquid crystal display device according to claim 1 wherein the insulating film is in the range from 1000 Å to 10000 Å in the thickness.
Claim 8
Dependent Claim
20 words
The liquid crystal device of claim 1, wherein an insulating film is overlayed on said conductive film and transparent electrodes.
References Cited (Backward Citations)
JPS6146931A
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US4747671A
Cited
JPS63296020A
Cited
US5000545A
Cited
JPH01179915A
Cited
US5007716A
Cited
JPH01280724A
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JPH0263019A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-12 | 1997-01-11 | 1997-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-12 | 2001-01-11 | 2001-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-12 | 2005-01-11 | 2005-07-13 | $7700.00 | Window Closed / Lapsed |