Liquid crystal apparatus

Details Liquid crystal apparatus Liquid crystal apparatus

1992-12-02

1995-05-09

Crane, Sara W.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 50, G02F 113

Patent

active

054145422

ABSTRACT:
A liquid crystal apparatus includes a liquid crystal cell comprising a pair of substrates each having thereon a transparent electrode with a thickness of 840 .ANG. or less, 1320-1680 .ANG., 1960-2470 .ANG. or 3180-3850 .ANG., and a liquid crystal layer disposed between the pair of substrates in a thickness of 10 microns or less; and a fluorescent light source comprising at least two types of fluophors having different emission peak wavelengths. The liquid crystal may preferably be a ferroelectric liquid crystal having a thickness of 5 microns or less. A dielectric film of, e.g., Ta.sub.2 O.sub.5 or TiO.sub.2 having a larger refractive index than the transparent electrode may be disposed.

REFERENCES:
patent: 4556288 (1985-12-01), Sekimura
patent: 4660936 (1987-04-01), Nosker
patent: 4737018 (1988-04-01), Iwashita et al.
patent: 4763995 (1988-08-01), Katagiri et al.
patent: 4813771 (1989-03-01), Handschy et al.
patent: 4870484 (1989-09-01), Sonehara
patent: 4917471 (1990-04-01), Tarao et al.
patent: 4976514 (1990-12-01), Murata et al.
patent: 5008789 (1991-04-01), Arai et al.

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