Liquid crystal display device with pixel registration illuminati

Details Liquid crystal display device with pixel registration illuminati Liquid crystal display device with pixel registration illuminati

1992-10-02

1994-12-27

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

362 27, 362 26, 362 31, 354 49, G02F 11335

Patent

active

053770277

ABSTRACT:
A liquid crystal display device, (10 in FIG. 1) comprises a liquid crystal panel (12) and a backside illuminator (14). The liquid crystal includes pixels (36) separated by a matrix area (37). The backside illuminator comprises a waveguide (40) having a face (44) facing the backside (18) of the liquid crystal panel and including light-emitting sites (48) disposed in registration with the pixels and separated by non-emitting surface (46). During operation, light received from a suitable source (52, 54, 56) is transmitted within the waveguide to the sites and emitted to illuminate the corresponding pixels.

REFERENCES:
patent: 4043636 (1975-08-01), Eberhardt et al.
patent: 4487481 (1984-12-01), Suzawa
patent: 4798448 (1989-01-01), van Raalte
patent: 4838661 (1989-06-01), McKee et al.
patent: 5101279 (1992-03-01), Kurematsu et al.
patent: 5128786 (1992-07-01), Yanagisawa
patent: 5151801 (1992-09-01), Hiroshima
Blumenfeld et al., "Parts That Glow", Machine Design (Oct. 29, 1959) pp. 94-103.
Stanley Electric, "LCD Liquid Crystal Display".
A. H. Firester, "Silicon Transistor Active Matrix Liquid Crystal Displays", Solid State Technology (Dec. 1988) pp. 63-67.

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