Liquid crystal display device and method of fabrication

Details Liquid crystal display device and method of fabrication Liquid crystal display device and method of fabrication

1987-05-19

1989-07-04

Miller, Stanley D.

350335, 350347E, G02F 113

Patent

active

048445690

ABSTRACT:
A liquid crystal display device and method of fabrication thereof includes a first twisted nematic liquid crystal cell and an optically anisotropic material sandwiched between two polarizers. A second twisted nematic liquid crystal cell or polymer film serves as the optically anisotropic material. The optically anisotropic material may be disposed on one or both sides of the first twisted nematic liquid crystal. The optically anisotropic material compensates for the elliptical polarization of the light passing through the liquid crystal cell so that the device transmits while light in the OFF state and appears black in the ON state.

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patent: 4664482 (1987-05-01), Kando et al.
patent: 4715686 (1987-12-01), Iwashita et al.
H. A. Tarry, "Electrically Tunable Narrowband Optical Filter", Electronics Letters, vol. 11, No. 19, Sep. 18, 1975, pp. 471-472.

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