Retardation layer having thin glass substrates

Details Retardation layer having thin glass substrates Retardation layer having thin glass substrates

C - Chemistry, Metallurgy

09

K

C09K 19/38 (2006.01) G02B 1/08 (2006.01) G02B 5/30 (2006.01) G02F 1/1335 (2006.01) G02F 1/13363 (2006.01) G02F 1/139 (2006.01)

Patent

CA 2133143

RETARDATION LAYER HAVING THIN GLASS SUBSTRATES Abstract of the Disclosure 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.

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