Color separating backlight

Details Color separating backlight Color separating backlight

1997-01-13

1998-05-05

Ullah, Akm E.

Optical waveguides

Noncyclindrical or nonplanar shaped waveguide

349 62, 349 65, 359291, 362 32, G02B 610

Patent

active

057488282

ABSTRACT:
A backlight for use in a flat panel display backlight consists of three components, (1) a collimating means, optically coupled to a waveguide suitable for transmitting light, which collimates white light and directs the light at an angle to the normal (perpendicular) direction to the surface of the flat panel display, (2) diffraction means that extend across the entire display between the collimating means and the flat panel, which angularly separates the white light into red, green and blue components, and (3) light directing means, also extending across the entire display between the diffraction means and the flat panel display, for focusing the red, green and blue light components onto the individual red, green and blue color subpixels of the LCD in an aligned fashion.

REFERENCES:
patent: 4544239 (1985-10-01), Shone et al.
patent: 4625390 (1986-12-01), Shone et al.
patent: 4836649 (1989-06-01), Ledebuhr et al.
patent: 4909601 (1990-03-01), Yajima et al.
patent: 4989076 (1991-01-01), Owada et al.
patent: 5196926 (1993-03-01), Lee
patent: 5200843 (1993-04-01), Karasawa et al.
patent: 5315418 (1994-05-01), Sprague et al.
patent: 5319491 (1994-06-01), Selbrede
patent: 5321448 (1994-06-01), Ogawa
patent: 5357288 (1994-10-01), Hiroshima et al.
patent: 5389982 (1995-02-01), Lee
patent: 5428468 (1995-06-01), Zimmerman et al.
B.A. Loiseaux, et al., Compact Spatio-Chromatic Single-LCD Projection Architecture (no date).
N. Ichikawa, Holographic Optical Element for Liquid Crystal Projector (no date).
B.G. Rho, et al., A New LCD Projector System with Higher Brightness (no date).

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