US5078477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferroelectric liquid crystal cell
Assignee: Mitsubishi Gas Chemical Co Inc
•
Filing: 1989-11-08
•
Granted: 1992-01-07
•
Expires: 2009-11-08
Abstract
Abstract A ferroelectric liquid crystal cell comprising a ferroelectric liquid crystal having an antiferro-electric phase (S m C A * ) or its composition and a pair of substrates having electrodes and holding said liquid crystal or its composition therebetween, characterized in that the layer structure of said liquid crystal in the antiferro-electric phase (S m C A * ) has once been changed from a chevron structure to a bookshelf structure by application of a voltage to the electrodes.
Inventors
- 👤 Masahiro Jono
- 👤 Yukio Ouchi
- 👤 Tomoyuki Yui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:50
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/137; G02F1/139; G02F1/141; G02F1/1416
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A ferroelectric liquid crystal cell comprising a ferroelectric liquid crystal having an antiferro-electric phase (S m C A *) or its composition and a pair of substrates having electrodes and holding said liquid crystal or its composition therebetween, characterized in that the layer structure of said liquid crystal in the antiferro-electric phase (S m C A *) has once been changed from a chevron structure to a bookshelf structure by application of a voltage to the electrodes.
Claim 2
Dependent Claim
77 words
A ferroelectric liquid crystal cell comprising a ferroelectric liquid crystal having an antiferro-electric phase (S m C A *) or its composition and a pair of substrates having electrodes and holding said liquid crystal or its composition therebetween, characterized in that the layer structure of said liquid crystal in the antiferro-electric phase (S m C A *) has once been changed from a chevron structure to a bookshelf structure by application of a voltage to the electrodes.
References Cited (Backward Citations)
US4867539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-06 | 1995-07-08 | 1996-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-06 | 1999-07-08 | 2000-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-06 | 2003-07-08 | 2004-01-07 | $7700.00 | Window Closed / Lapsed |