Liquid crystal modulation element and projection-type liquid cry

Details Liquid crystal modulation element and projection-type liquid cry Liquid crystal modulation element and projection-type liquid cry

1998-10-27

2000-08-15

Malinowski, Walter

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349106, G02F 11335

Patent

active

06104458&

ABSTRACT:
A liquid crystal modulation element and a projection-type liquid crystal display apparatus are provided for maintaining color purity and improving luminance of an image. Microlenses each provided for every three pixel electrodes condense color rays of B, R and G incident at mutually different angles and have the rays enter the pixels of the respective colors. Trimming filters are each provided on the respective pixel electrodes for intercepting rays leaking onto the own pixel electrode of the color rays to enter the neighboring pixel electrodes. As a result, a reduction in color purity due to color mixture is prevented even if the incident divergence angles of the color rays entering a liquid crystal panel are large. Since the incident divergence angles may be relatively large, the amount of diaphragming in the optical projection system may be reduced. A large quantity of light is thereby obtained.

REFERENCES:
patent: 5161042 (1992-11-01), Hamada
patent: 5546206 (1996-08-01), Nakanishi et al.
patent: 5566007 (1996-10-01), Ikeda et al.
patent: 5623349 (1997-04-01), Clarke
patent: 5777804 (1998-07-01), Nakamura et al.
patent: 5798805 (1998-08-01), Ooi et al.

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