US5024255A
Expired / Lapsed
US
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Method of filling a liquid crystal device with ferroelectric liquid crystal material
Assignee: Semiconductor Energy Laboratory Co Ltd
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Filing: 1988-07-21
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Granted: 1991-06-18
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Expires: 2008-07-21
Abstract
Abstract An improved method of filling a liquid crystal device with a blended ferroelectric liquid crystal material is disclosed. The method includes the step of disposing the blended ferroelectric liquid crystal material in an inner space formed in the liquid crystal device, with the temperature of the blended liquid crystal being maintained during the disposing step at a temperature higher than the transition temperature of any constituent of the blended liquid crystal material such that the blended liquid crystal material is transformed in its isotropic phase.
Inventors
- 👤 Toshio Watanabe
- 👤 Masahiko Sato
- 👤 Akio Osabe
- 👤 Hiroyuki Sakayori
- 👤 Akira Mase
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; G02F1/1341
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A method of filling a liquid crystal device with a blended ferroelectric liquid crystal material comprising the step of disposing said blended ferroelectric liquid crystal material in an inner space formed in said liquid crystal device, wherein the temperature of said blended liquid crystal is maintained during the disposing step higher than the transition temperature of any constituents of said blended liquid crystal material so that the blended liquid crystal material is transformed in its isotropic phase.
Claim 2
Independent Claim
77 words
A method of filling a liquid crystal device with a blended ferroelectric liquid crystal material comprising the step of disposing said blended ferroelectric liquid crystal material in an inner space formed in said liquid crystal device, wherein the temperature of said blended liquid crystal is maintained during the disposing step higher than the transition temperature of any constituents of said blended liquid crystal material so that the blended liquid crystal material is transformed in its isotropic phase.
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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) | 1994-06-17 | 1994-12-17 | 1995-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-17 | 1998-12-17 | 1999-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-17 | 2002-12-17 | 2003-06-18 | $7700.00 | Window Closed / Lapsed |