Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified... – With charge transferring layer of specified composition
Patent
1994-09-26
1996-11-19
Thomas, Alexander
Stock material or miscellaneous articles
Liquid crystal optical display having layer of specified...
With charge transferring layer of specified composition
428220, 359 63, 359 73, G02F 11335
Patent
active
055760775
ABSTRACT:
The present invention is in the field of retardation layers for liquid crystalline displays, more particularly in the field of retardation layers based on super-twisted nematic (STN) liquid crystalline layer. In the retardation layers of the present invention the liquid crystalline polymer is placed between glass substrates wherein at least one substrate has a thickness of 20-500 micrometers. The use of such thin glass substrates reduces the weight and thickness of the retardation layer.
The LC polymer film may also be placed between the substrate of the display cell and a thin glass substrate or between the polarizer and a thin glass substrate. In these embodiments of the invention a second thin glass substrate is not necessary and the thickness and weight of the retardation layer is further reduced.
REFERENCES:
Patent Abstract of Japanese Patent Publication No. 63/271, 428 (Nov./1988)-from European Patent Office.
Patent Abstract of Japanese Patent Publication No. 2/308,225 (Feb./1990)-from European Patent Office.
Patent Abstract of Japanese Patent Publication No. 5/80,317 (Apr./1993)-from European Patent Office.
Bosma Martin
Mohlmann Gustaaf R.
Picken Stephen J.
Venema Jan W.
Akzo Nobel N.V.
Fennelly Richard P.
Morris Louis A.
Thomas Alexander
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