Patent US5645758A successfully refreshed from Google Patents.
US5645758A
Expired / Lapsed
US
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Liquid crystal composition, liquid crystal device using the same, light controlling element, recording medium, and light shutter
Assignee: Toyota Central R&D Labs Inc
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Filing: 1995-04-13
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Granted: 1997-07-08
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Expires: 2015-04-13
Abstract
Abstract A liquid crystal composition comprising a liquid crystal and a second substance dispersed therein, the second substance having affinity for the liquid crystal and being composed of particles having a particle size and an aspect ratio of a predetermined value or greater, and a liquid crystal composition comprising a liquid crystal containing electric field sensitive liquid crystal molecules having a positive dielectric anisotropy as the principal component and flat plate-shaped particles having affinity for the liquid crystal being dispersed therein at such a degree of density suitable for effectively forming liquid crystal domains. Also described are a liquid crystal device using the same, a light-controlling element, a recording medium, and a light shutter.
Inventors
- 👤 Masaya Kawasumi
- 👤 Hisato Takeuchi
- 👤 Arimitsu Usuki
- 👤 Akane Okada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:17
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/132; C; C09; C09K; C09K19/00; C09K19/52; G02F1/137; C09K2323/00; C09K2323/03; C09K2323/031; G02F1/13725
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
64 words
A liquid crystal composition comprising a non-polymeric liquid crystal and a second substance dispersed therein, the second substance having affinity for the liquid crystal and being composed of particles having a particle size of from 0.1 to 20 μm and an aspect ratio of 2 or more, said particles being present in said composition in an amount to form domains in the liquid crystal.
Claim 2
Dependent Claim
64 words
A liquid crystal composition comprising a non-polymeric liquid crystal and a second substance dispersed therein, the second substance having affinity for the liquid crystal and being composed of particles having a particle size of from 0.1 to 20 μm and an aspect ratio of 2 or more, said particles being present in said composition in an amount to form domains in the liquid crystal.
Claim 3
Dependent Claim
28 words
A liquid crystal composition as claimed in claim 1, wherein the particles of the second substance have a particle size of from 1 to 5 μm in size.
Claim 4
Dependent Claim
24 words
A liquid crystal composition as claimed in claim 1, wherein the particles of the second substance have an aspect ratio of 5 or more.
Claim 5
Dependent Claim
40 words
A liquid crystal composition as claimed in claim 1, wherein the particles of the second substance are present in an amount of from 1 to 10 parts by weight with respect to 100 parts by weight of the liquid crystal.
Claim 6
Dependent Claim
50 words
A liquid crystal composition comprising an electric field sensitive non-polymeric liquid crystal having a positive dielectric anisotropy and flat plate-shaped particles dispersed therein having a diameter of from 0.1 to 20 μm and affinity for the liquid crystal, said particles being present in an amount to form liquid crystal domains.
Claim 7
Dependent Claim
50 words
A liquid crystal composition comprising an electric field sensitive non-polymeric liquid crystal having a positive dielectric anisotropy and flat plate-shaped particles dispersed therein having a diameter of from 0.1 to 20 μm and affinity for the liquid crystal, said particles being present in an amount to form liquid crystal domains.
Claim 8
Dependent Claim
55 words
A liquid crystal composition comprising an electric field sensitive non-polymeric liquid crystal having a positive dielectric anisotropy, a dichromatic dye, and flat plate-shaped particles having a diameter of from 0.1 to 20 μm and affinity for the liquid crystal said particles being present in the liquid crystal in an amount to form liquid crystal domains.
Claim 9
Dependent Claim
55 words
A liquid crystal composition comprising an electric field sensitive non-polymeric liquid crystal having a positive dielectric anisotropy, a dichromatic dye, and flat plate-shaped particles having a diameter of from 0.1 to 20 μm and affinity for the liquid crystal said particles being present in the liquid crystal in an amount to form liquid crystal domains.
Claim 10
Dependent Claim
37 words
A liquid crystal composition as claimed in claim 1, wherein the liquid crystal used therein undergoes phase transition between a liquid crystalline state and an isotropic state in a temperature range of from -100° C. -60° C.
Claim 11
Dependent Claim
18 words
A liquid crystal composition as claimed in claim 1, wherein the second substance has an electric field sensitivity.
Claim 12
Dependent Claim
20 words
A liquid crystal composition as claimed in claim 1, wherein the second substance is a layered clay mineral rendered organic-compatible.
Claim 13
Dependent Claim
22 words
A liquid crystal composition as claimed in claim 5, wherein the flat plate-shaped particles are those of layered clay minerals rendered organic-compatible.
Claim 14
Dependent Claim
61 words
A liquid crystal composition comprising a non-polymeric liquid crystal and flat plate-shaped particles having a diameter of from 0.1 to 20 μm, said particles being dispersed in the liquid crystal at such a degree of density that domains are formed and that light scattering attributed to the flat plate-shaped particles does not substantially influence light transmittance of the liquid crystal composition.
Claim 15
Dependent Claim
61 words
A liquid crystal composition comprising a non-polymeric liquid crystal and flat plate-shaped particles having a diameter of from 0.1 to 20 μm, said particles being dispersed in the liquid crystal at such a degree of density that domains are formed and that light scattering attributed to the flat plate-shaped particles does not substantially influence light transmittance of the liquid crystal composition.
Claim 16
Dependent Claim
24 words
A liquid crystal composition as claimed in claim 11, wherein the liquid crystal used therein undergoes phase transition between -10° C. and 60° C.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2000-07-07 | 2001-01-06 | 2001-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-07-07 | 2005-01-06 | 2005-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-07-07 | 2009-01-06 | 2009-07-08 | $7700.00 | Window Closed / Lapsed |