EP0173369A1
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EP
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Picture display cell
Assignee: Koninklijke Philips NV
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Filing: 1985-07-12
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Granted: —
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Expires: 2005-07-12
Abstract
Abstract Picture display cell having a liquid crystalline compound provided between two substrate plates comprising at their inner surface electrodes and a monolayer of a monofunctional silane compound with which a homeotropic orientation of the liquid crystalline compound is obtained.
Inventors
- 👤 De Venne. Joannes Landricus Maria Van
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 15:54
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1337; G02F1/133711; G02F1/133719; C; C09; C09K; C09K2323/00; C09K2323/02; C09K2323/023
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
131 words
A picture display cell which comprises a liquid crystalline compound provided between two substrate plates provided on their inner surfaces with an electrode and an orientation layer which gives the liquid crystalline compound a homeotropic orientation, characterized in that the orientation layer is a monolayer obtained by using a compound which satisfies formula I of the formula sheet, wherein R 1 is an alkyl group or a cycloalkyl group having at least 4 carbon atoms, which group may be substituted with fluorine, R 2 is an alkyl group having 1-3 carbon atoms or a cyclopropyl group, which group may be substituted with fluorine, X is a halogen atom or an alkoxy group having 1-2 carbon atoms, m has the value 1-3 n has the value O-2, and m+ n = 3.
Claim 2
Dependent Claim
131 words
A picture display cell which comprises a liquid crystalline compound provided between two substrate plates provided on their inner surfaces with an electrode and an orientation layer which gives the liquid crystalline compound a homeotropic orientation, characterized in that the orientation layer is a monolayer obtained by using a compound which satisfies formula I of the formula sheet, wherein R 1 is an alkyl group or a cycloalkyl group having at least 4 carbon atoms, which group may be substituted with fluorine, R 2 is an alkyl group having 1-3 carbon atoms or a cyclopropyl group, which group may be substituted with fluorine, X is a halogen atom or an alkoxy group having 1-2 carbon atoms, m has the value 1-3 n has the value O-2, and m+ n = 3.
Claim 3
Dependent Claim
38 words
A picture display cell as claimed in Claim 1, characterized in that the compound satisfies formula II of the formula sheet, wherein R 3 is an alkyl group or a cycloalkyl group having at least 8 carbon atoms.
Claim 4
Dependent Claim
32 words
A picture display cell as claimed in Claim 1 or 2, characterized in that after using a compound of formula I or II, an after-treatment is carried out with the substance trimethylchlorosilane.
References Cited (Backward Citations)
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