EP0196919A2
Expired / Lapsed
EP
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Liquid crystal display devices
Assignee: Mitsubishi Chemical Corp
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Filing: 1986-04-01
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Granted: —
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Expires: 2006-04-01
Abstract
Abstract A liquid crystal composition including a taser-responsive liquid medium having a maximum absorption at predetermined laser wavelength has dissolved in it at least two dyes, each of which has a maximum absorption at or near the said predetermined laser wavelength, each dye being present in an amount less than its solubility limit in the liquid crystal composition. Liquid crystal display devices for use at the said predetermined laser wavelength comprise such compositions.
Inventors
- 👤 Kunihiko C/O Patents Division Arai
- 👤 Tetsuo C/O Patents Division Urabe
- 👤 Tetsuya C/O Patents Division Morita
- 👤 Konoe Miura
- 👤 Tetsuo Ozawa
- 👤 Junko Iwanami
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 19:28
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/132; C; C09; C09K; C09K19/00; C09K19/52; C09K19/60; G02F1/137; G02F1/13718
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
61 words
A liquid crystal composition including a laser-responsive liquid medium having a maximum absorption at a predetermined laser wavelength, characterized in that at least two dyes, each of which has a maximum absorption at or near the said predetermined laser wavelength, is dissolved in the composition, each being present in an amount less than its solubility limit in the liquid crystal composition.
Claim 2
Dependent Claim
61 words
A liquid crystal composition including a laser-responsive liquid medium having a maximum absorption at a predetermined laser wavelength, characterized in that at least two dyes, each of which has a maximum absorption at or near the said predetermined laser wavelength, is dissolved in the composition, each being present in an amount less than its solubility limit in the liquid crystal composition.
Claim 3
Dependent Claim
79 words
A composition as claimed in claim 1 containing at least two squarylium-type dyes represented by the following general formula: in which each of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 1' , R 2' , R 3' , R 4' , R 5' , R 6' and R 7' , independently of the others, represents a hydrogen atom or a C 1-13 alkyl group.
Claim 4
Dependent Claim
33 words
A composition as claimed in claim 2 containing at least two squarylium-type dyes represented by one or more of the following general formulae: in which the variables are as defined in claim 2.
Claim 5
Dependent Claim
47 words
A composition as claimed in claim 2 containing the squarylium-type dye represented by the general formula: and at least one squarylium-type dye represented by the formula: in which each of R and R', independently of the other, represents a hydrogen atom or a C 1-13 alkyl group.
Claim 6
Dependent Claim
31 words
A liquid crystal display device including a liquid crystal composition as claimed in any one of claims 1 to 4, the device being for use with the said predetermined laser wavelength.
References Cited (Backward Citations)
No citation records indexed.
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