Liquid crystal cell having an alignment layer with a temperature

Details Liquid crystal cell having an alignment layer with a temperature Liquid crystal cell having an alignment layer with a temperature

1992-05-28

1994-08-30

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 43, 359 44, 359 77, 359 78, G02F 11337, G02F 113

Patent

active

053433181

ABSTRACT:
The liquid crystal cell with an alignment layer in the form of a soluble halogenated polymer of the ethylenic substituted ethylenic cycloaliphatic or heterocycloaliphatic type which induces homeotropic or planar alignment of the crystal molecules in contact therewith depending on whether the temperature is below or above a predetermined temperature T.sub.HP. The alignment layer may be a copolymer of tetrafluoroethylene with bis-2,2-trifluoromethyl-4,5-difluoro-1,3-dioxide.

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patent: 5093735 (1992-03-01), Doane et al.
patent: 5140447 (1992-08-01), Kaneko et al.
patent: 5173342 (1992-12-01), Sato et al.
patent: 5186985 (1993-02-01), Estes et al.
patent: 5188870 (1993-02-01), Brosig
patent: 5192596 (1993-03-01), Hanyu et al.
patent: 5268780 (1993-12-01), Hanyu et al.

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