Liquid crystal display apparatus using holographic optical eleme

Details Liquid crystal display apparatus using holographic optical eleme Liquid crystal display apparatus using holographic optical eleme

1997-01-30

2000-07-11

Sikes, William L

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349 42, 349110, 349 80, 359 15, 359 22, G02F 11343, G02F 1347, G02F 11333, G02F 11335

Patent

active

060880767

ABSTRACT:
A liquid crystal display apparatus uses a holographic optical element to split the light from a light source for generating white light to R, G and B wavelength light components. The split light components enter respective pixels of a liquid crystal cell according to the R, G and B wavelengths, thereby ensuring the display of a color image. In this liquid crystal display apparatus, unit holographic optical elements corresponding to unit pixels each consisting of R, G and B pixels are comprised of holographic optical cells for condensing respective lights of specific wavelengths on the associated pixels. Alternatively, the unit pixels are formed to have symmetrical shapes. Color filters may be provided at some of the pixels of the liquid crystal cell. Accordingly, the light incident to the pixels of the liquid crystal cell is optimized.

REFERENCES:
patent: 5267060 (1993-11-01), Colton
patent: 5506701 (1996-04-01), Ichkawa
patent: 5526145 (1996-06-01), Weber
patent: 5566007 (1996-10-01), Ikeda et al.
patent: 5737040 (1998-04-01), Ichikawa et al.

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