Compensator for liquid crystal display

Details Compensator for liquid crystal display Compensator for liquid crystal display

1994-12-16

1996-03-05

Geist, Gary

Compositions

Liquid crystal compositions

359 73, C09K 1952, G02F 113

Patent

active

054964989

ABSTRACT:
A compensator for an active matrix type liquid crystal display using a thin film transistor is provided. The compensator is made by a film of a liquid crystalline polymer which exhibits a twisted nematic orientation in a liquid crystal state and assumes a glassy state at temperatures below a liquid crystal transition point thereof, the constituent molecules of the liquid crystalline polymer film having a helical structure with a helical axis wherein the twist angle is in the range of 70 to 150 degrees, and the product .DELTA.n.multidot.d of birefringence .DELTA.n of the liquid crystalline polymer film and film thickness,d, being in the range of 0.2 to 3.0 .mu.m.

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patent: 5308535 (1994-05-01), Scheuble et al.
patent: 5359443 (1994-10-01), Toyooka et al.

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