Liquid crystal display devices and method of manufacture

Details Liquid crystal display devices and method of manufacture Liquid crystal display devices and method of manufacture

1991-09-25

1993-04-06

Robinson, Ellis P.

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With charge transferring layer of specified composition

428447, 427 77, 427 78, 427240, 427558, 359 75, 359 76, 359 77, 359 78, 25229901, C09K 1900

Patent

active

052002381

ABSTRACT:
A method of forming liquid crystal alignment layers of high tilt angle, said method comprising preparing a polymeric film of a monomer of the formula IV: ##STR1## wherein X and Y are strong electron withdrawing groups, optionally substituted with or containing Si or Ti, and A is --H or --CH.dbd.CH.sub.2 or, provided that X and Y are both --CN, A may be --R.sup.2 or --CH.dbd.CHR.sup.2 wherein R.sup.2 is hydrocarbyl, aryl or alkaryl; exposing said polymeric film to ultraviolet radiation for sufficient period of time to photochemically modify the polymer and, thereafter, subjecting the modified polymer to a heat treatment in the range of 100.degree.-400.degree. C. for at least 5 seconds.

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patent: 4618514 (1986-10-01), McClelland et al.
patent: 4662721 (1987-05-01), Harada et al.
patent: 4838658 (1989-06-01), Zondler
patent: 4914004 (1990-04-01), Kohler et al.
patent: 5024850 (1991-06-01), Broer et al.
patent: 5061509 (1991-10-01), Naito

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