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US5089905A
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Color liquid crystal display system with spacer-adhesive and separate rigid spacers across display surface
Assignee: Toppan Inc
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Filing: 1988-09-19
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Granted: 1992-02-18
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Expires: 2008-09-19
Abstract
Abstract The present invention provides a color display system characterized in that polarized surface control means comprises a ferro-electric liquid crystal cell, and a spacer and adhesive layer is interposed between a first panel and a second panel, the spacer and adhesive layer substantially setting a gap d between the first and second panels holding the ferroelectric liquid crystal therebetween to electrically drive the same to: ##EQU1## wherein: λ: specific wavelength Δn: refractive index anisotropy d: gap (thickness of a liquid crystal layer).
Inventors
- 👤 Jun Sasaki
- 👤 Akira Ogawa
- 👤 Yasumasa Akimoto
- 👤 Takao Minato
- 👤 Hajime Ohnishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:18
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1339; G02F1/13394; G02F1/1335; G02F1/133509; G02F1/133512
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
140 words
A color display system comprising at least one means for producing color-polarized light, having a specified wavelength λ, from a light image having a plurality of color components, at least one polarized surface control means which rotates said color-polarized light, a polarizing means for selectively passing light polarized in a selected direction, said polarized surface control means comprising a ferro-electric liquid crystal cell containing a liquid crystal having a refractive index anisotropy of Δn, said cell having a first panel and a second panel, a spacer-adhesive layer and a rigid auxiliary spacer layer interposed between said first panel and said second panel substantially setting a gap d between said panels, wherein ##EQU3## and wherein said spacer-adhesive layer is photo-etched onto one of said panels in a pre-selected pattern and said rigid auxiliary spacer layer is separate from said spacer-adhesive layer.
Claim 2
Dependent Claim
140 words
A color display system comprising at least one means for producing color-polarized light, having a specified wavelength λ, from a light image having a plurality of color components, at least one polarized surface control means which rotates said color-polarized light, a polarizing means for selectively passing light polarized in a selected direction, said polarized surface control means comprising a ferro-electric liquid crystal cell containing a liquid crystal having a refractive index anisotropy of Δn, said cell having a first panel and a second panel, a spacer-adhesive layer and a rigid auxiliary spacer layer interposed between said first panel and said second panel substantially setting a gap d between said panels, wherein ##EQU3## and wherein said spacer-adhesive layer is photo-etched onto one of said panels in a pre-selected pattern and said rigid auxiliary spacer layer is separate from said spacer-adhesive layer.
Claim 3
Dependent Claim
46 words
A color display system according to claim 1, wherein the material for the spacer-adhesive layer is selected from the group consisting of casein, glue, gelatin, novolak resin, rubber, polyvinyl alcohol, vinyl polymer, acrylate resin, polyacrylamid, bisphenol resin, polyimide, polyester, polyurethane, polyamide system resin and photosensitive resins.
Claim 4
Dependent Claim
21 words
A color display system according to claim 1, wherein an insulated layer is provided on at least one of said panels.
Claim 5
Dependent Claim
32 words
A color display system according to claim 1, wherein the pre-selected pattern of the spacer-adhesive layer comprises dots, lines, stripes or islands uniformly distributed on the surface of one of said panels.
Claim 6
Dependent Claim
23 words
A color display system according to claim 1, wherein said polarized surface control means is interposed between two means for producing color-polarized light.
Claim 7
Dependent Claim
27 words
A color display system according to claim 1, wherein the polarizing means for selectively passing light polarized in a selected direction comprises a neutral color polarizing plate.
Claim 8
Dependent Claim
26 words
A color display system according to claim 1, wherein the polarizing means for selectively passing light polarized in a selected direction comprises a color polarizing plate.
Claim 9
Dependent Claim
28 words
A color display system according to claim 1, wherein said rigid auxiliary spacer layer is formed from a material selected from the group consisting of indium or chrome.
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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) | 1995-02-17 | 1995-08-19 | 1996-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-17 | 1999-08-19 | 2000-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-17 | 2003-08-19 | 2004-02-18 | $7700.00 | Window Closed / Lapsed |