US4560241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal device for multicolor images comprising thin protective glass plate
Assignee: Individual
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Filing: 1983-11-16
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Granted: 1985-12-24
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Expires: 2003-11-16
Abstract
Abstract There is provided a multicolor liquid crystal display comprising an integrated multilayer arrangement of the sequence: thick transparent plate, color filter, thin glass plate, liquid crystal, and thick glass plate, there being provided a transparent electrode pattern corresponding to that of the filter pattern, which electrode patterns are applied to the two surfaces which face the liquid crystal. The order of thickness of the thin glass plate is generally about 0.2 mm or less, and up to about 0.3 mm. The color filter may be in the form of a pattern of colored stripes or dots; there can also be used a multicolor filter comprising a pattern of stripes or dots of dichroic transmissive polarizing material, in conjunction with a polarizer applied to the rear plate of the device.
Inventors
- 👤 Michael Stolov
- 👤 Adi Stolov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:20
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133514; G02F1/133528; G02F1/133533; G02F1/133345; G02F1/133519; G02F1/136; G02F1/1362; G02F1/137; G02F1/13725; G02F1/139; G02F1/1393; G02F1/1396
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
114 words
A multicolor liquid crystal display comprising an integrated multilayer arrangement, the sequence of layers being: a thick transparent glass or plastic plate, color filter pattern filter means, a thin glass plate, a liquid crystal layer, and a second thick plate of glass, said thin glass plate and said second thick glass plate each having a surface which faces the liquid crystal layer with each surface having applied thereto a transparent electrode pattern which corresponds to the color filter pattern and wherein said color filter pattern filter means is located between said thick transparent glass or plastic plate and said thin glass plate to protect the color filter pattern filter means from said liquid crystal.
Claim 2
Dependent Claim
114 words
A multicolor liquid crystal display comprising an integrated multilayer arrangement, the sequence of layers being: a thick transparent glass or plastic plate, color filter pattern filter means, a thin glass plate, a liquid crystal layer, and a second thick plate of glass, said thin glass plate and said second thick glass plate each having a surface which faces the liquid crystal layer with each surface having applied thereto a transparent electrode pattern which corresponds to the color filter pattern and wherein said color filter pattern filter means is located between said thick transparent glass or plastic plate and said thin glass plate to protect the color filter pattern filter means from said liquid crystal.
Claim 3
Dependent Claim
21 words
A multicolor display according to claim 1, wherein the thin glass plate has a thickness of about 0.2 mm. or less.
Claim 4
Dependent Claim
21 words
A device according to claim 1, wherein the color filter pattern is a pattern of stripes or dots of desired colors.
Claim 5
Dependent Claim
37 words
A device according to claim 1, wherein the liquid crystal layer is of the twisted nematic type and said device further comprises two polarizers applied to respective external surfaces of said thick transparent plates of the device.
Claim 6
Dependent Claim
19 words
A device according to claim 1, wherein the liquid crystal is of the guest-host type made with black color.
Claim 7
Dependent Claim
17 words
A device according to claim 1, wherein the liquid crystal is of the electrically controlled birefringence type.
Claim 8
Dependent Claim
22 words
A device according to claim 1, wherein a reflecting plate is applied to an external surface of one of said thick plates.
Claim 9
Dependent Claim
38 words
A device according to claim 1, wherein a polarizer is applied to a rear surface of the device, and said color filter pattern comprises a pattern of stripes or dots of dichroic transmissive polarizing material of different colors.
Claim 10
Dependent Claim
31 words
A device according to claim 1, wherein said color filter pattern filter means is printed on a surface of said transparent thick glass or plastic plate facing said thin glass plate.
Claim 11
Dependent Claim
20 words
A device according to claim 1, wherein said color filter pattern filter means is printed on said thin glass plate.
Claim 12
Dependent Claim
79 words
A multicolor liquid crystal display comprising first and second spaced apart thick transparent plates and located therebetween a multilayered arrangement consisting essentially of in sequential order a color filter pattern filter means, a thin transparent glass plate, a first transparent electrode, a liquid crystal material, and a second transparent electrode, and wherein said transparent electrodes are respectively located on a surface of said first thin glass plate and said second thick transparent plate that encloses said liquid crystal material.
Claim 13
Dependent Claim
79 words
A multicolor liquid crystal display comprising first and second spaced apart thick transparent plates and located therebetween a multilayered arrangement consisting essentially of in sequential order a color filter pattern filter means, a thin transparent glass plate, a first transparent electrode, a liquid crystal material, and a second transparent electrode, and wherein said transparent electrodes are respectively located on a surface of said first thin glass plate and said second thick transparent plate that encloses said liquid crystal material.
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) | 1988-12-23 | 1989-06-24 | 1989-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-23 | 1993-06-24 | 1993-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-23 | 1997-06-24 | 1997-12-24 | $7700.00 | Window Closed / Lapsed |