Electro-optical liquid crystal device with compensator having ne

Details Electro-optical liquid crystal device with compensator having ne Electro-optical liquid crystal device with compensator having ne

1990-01-19

1992-08-25

Miller, Stanley D.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359102, G02F 11335, G02F 113

Patent

active

051423936

ABSTRACT:
An electro-optical liquid crystal display device includes at least one of the optically anisotropic layers has three main refractive indices N1o, N2o and N3e. The axis corresponding to N3e is in the direction approximately parallel to the surfaces of the substrates of the liquid crystal cell and N3e is smaller than N1o and N2o. The device may include a homogenous or twisted liquid crystall cell with the cell and anisotropic layer sandwiched between two polarizers.

REFERENCES:
patent: 4844569 (1989-07-01), Wada et al.
patent: 4889412 (1989-12-01), Clerc et al.
patent: 4957349 (1990-09-01), Clerc et al.

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