US5177627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode plate with conductive color filter
Assignee: Canon Inc
•
Filing: 1991-08-27
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Granted: 1993-01-05
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Expires: 2011-08-27
Abstract
Abstract An electrode plate with a color filter having a good planarity and suitable for a liquid crystal device is provided by forming on a transparent substrate a porous electroconductive film colored in a prescribed pattern by impregnation with an organic colorant. After being further coated with an insulating film and an alignment film, the electrode plate with a color filter may be applied to another electrode plate with a spacer therebetween to form a cell, which is then filled with a liquid crystal to form a liquid crystal device.
Inventors
- 👤 Kazuya Ishiwata
- 👤 Yuichi Masaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:31
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133514; G02F1/1343; G02F1/13439
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
84 words
A liquid crystal device, comprising: a first electrode plate comprising a transparent substrate, a porous electroconductive film colored in a prescribed pattern by impregnation with an organic colorant, an insulating film and an alignment film; a second electrode plate comprising a transparent substrate, a transparent electrode, an insulating film and an alignment film; a spacer member disposed to define a gap between the first and second electrode plate; and a liquid crystal disposed to fill the gap between the first and second electrode plates.
Claim 2
Dependent Claim
84 words
A liquid crystal device, comprising: a first electrode plate comprising a transparent substrate, a porous electroconductive film colored in a prescribed pattern by impregnation with an organic colorant, an insulating film and an alignment film; a second electrode plate comprising a transparent substrate, a transparent electrode, an insulating film and an alignment film; a spacer member disposed to define a gap between the first and second electrode plate; and a liquid crystal disposed to fill the gap between the first and second electrode plates.
Claim 3
Dependent Claim
33 words
An electrode plate with a color filter, comprising: a transparent substrate, and a porous electroconductive film disposed on the transparent substrate and colored in a prescribed pattern by impregnation with an organic colorant.
Claim 4
Dependent Claim
33 words
An electrode plate with a color filter, comprising: a transparent substrate, and a porous electroconductive film disposed on the transparent substrate and colored in a prescribed pattern by impregnation with an organic colorant.
Claim 5
Dependent Claim
15 words
An electrode plate according to claim 2, wherein said organic colorant is a black colorant.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-01-05 | 1996-07-06 | 1997-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-01-05 | 2000-07-06 | 2001-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-01-05 | 2004-07-06 | 2005-01-05 | $7700.00 | Window Closed / Lapsed |