Patent EP0269062A2 successfully refreshed from Google Patents.
EP0269062A2
Expired / Lapsed
EP
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Ferroelectric liquid crystal mixture for guest-host type display elements
Assignee: JNC Corp
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Filing: 1987-11-24
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Granted: —
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Expires: 2007-11-24
Abstract
Abstract A ferroelectric chiral smectic liquid crystal composition having a tilt angle of 30 DEG to 60 DEG and superior alignment property is provided, which composition is obtained by mixing at least one chiral or achiral smectic C compound having smectic A phase of temperature range within 40 DEG C with at least one chiral smectic C compound having no smectic A phase, and adjusting the temperature range of smectic A phase of the resulting composition so as to fall within 30 DEG C.
Inventors
- 👤 Mitsuyoshi Ichihashi
- 👤 Kanetsugu Terashima
- 👤 Makoto Kikuchi
- 👤 Fusayuki Takeshita
- 👤 Kenji Furukawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 06:46
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/34; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/137; G02F1/139; G02F1/141; C09K19/02; C09K19/0225; C09K19/42; C09K19/46; C09K19/52
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
194 words
a ferroelectric smectic C liquid crystal mixture having smectic A phase region within 30°C on the higher temperature side relative to chiral smectic C phase and also having a tilt angle at its chiral smectic C phase in the range of 30° to 60°, which mixture is (i) a mixture comprising at least one liquid crystal having smectic A phase region within 40°C on the higher temperature side relative to chiral smectic C phase and at least one liquid crystal having chiral smectic C phase or achiral smectic C phase and having no smectic A phase region; (ii) a mixture comprising at least one liquid crystal having smectic A phase region within 40°C on the higher temperature side relative to achiral smectic C phase and at least one liquid crystal having chiral smectic C phase and having no smectic A phase region; or (iii) a mixture comprising at least one liquid crystal having smectic A phase region within 40°C on the higher temperature side relative to achiral smectic C phase, at least one liquid crystal having achiral smectic C phase and having no smectic A phase region and at least one optically active substance.
Claim 2
Dependent Claim
194 words
a ferroelectric smectic C liquid crystal mixture having smectic A phase region within 30°C on the higher temperature side relative to chiral smectic C phase and also having a tilt angle at its chiral smectic C phase in the range of 30° to 60°, which mixture is (i) a mixture comprising at least one liquid crystal having smectic A phase region within 40°C on the higher temperature side relative to chiral smectic C phase and at least one liquid crystal having chiral smectic C phase or achiral smectic C phase and having no smectic A phase region; (ii) a mixture comprising at least one liquid crystal having smectic A phase region within 40°C on the higher temperature side relative to achiral smectic C phase and at least one liquid crystal having chiral smectic C phase and having no smectic A phase region; or (iii) a mixture comprising at least one liquid crystal having smectic A phase region within 40°C on the higher temperature side relative to achiral smectic C phase, at least one liquid crystal having achiral smectic C phase and having no smectic A phase region and at least one optically active substance.
Claim 3
Dependent Claim
29 words
In a light-switching element containing a ferroelectric smectic C liquid crystal composition, the improvement wherein the composition is a ferroelectric smectic C composition as set forth in claim 1.
References Cited (Backward Citations)
No citation records indexed.
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