US5046831A
Expired / Lapsed
US
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Liquid crystal electro-optical device having micro-domains
Assignee: Semiconductor Energy Laboratory Co Ltd
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Filing: 1990-03-06
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Granted: 1991-09-10
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Expires: 2010-03-06
Abstract
Abstract A liquid crystal display comprises a pair of substrates provided with an electrode arrangement in matrix form. A chiral smectic C phase liquid crystal material is interposed between the substrates. In the liquid crystal layer, each pixel consists of a number of micro-domains which can be compared to polycrystal line structures. Interaction between adjacent pixels through well ordered liquid crystal structure is suppressed by virtue of the micro-domains.
Inventors
- 👤 Shunpei Yamazaki
- 👤 Masahiko Sato
- 👤 Toshiji Hamatani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:01
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/20; C09K19/2007; C09K19/2021; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/137; G02F1/139; G02F1/141
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A liquid crystal device comprising: a pair of substrates; a chiral smectic liquid crystal layer consisting of a plurality of individual micro-domains interposed between said substrates; an electrode arrangement provided on the inside surface of said pair of substrates for applying an electric field to said chiral smectic liquid crystal layer; an orientation control means formed on at least one inside surface of said substrates; wherein each micro-domain is in contact with its adjacent micro-domain and wherein in each of said micro-domains, liquid crystal molecules are aligned in accordance with one direction which is different from adjacent micro-domains contiguous thereto.
Claim 2
Dependent Claim
100 words
A liquid crystal device comprising: a pair of substrates; a chiral smectic liquid crystal layer consisting of a plurality of individual micro-domains interposed between said substrates; an electrode arrangement provided on the inside surface of said pair of substrates for applying an electric field to said chiral smectic liquid crystal layer; an orientation control means formed on at least one inside surface of said substrates; wherein each micro-domain is in contact with its adjacent micro-domain and wherein in each of said micro-domains, liquid crystal molecules are aligned in accordance with one direction which is different from adjacent micro-domains contiguous thereto.
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) | 1994-09-09 | 1995-03-11 | 1995-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-09 | 1999-03-11 | 1999-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-09 | 2003-03-11 | 2003-09-10 | $7700.00 | Window Closed / Lapsed |