Liquid crystal display device with directional backlight and ima

Details Liquid crystal display device with directional backlight and ima Liquid crystal display device with directional backlight and ima

1994-01-31

1996-10-29

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 49, 359 65, G02F 11333, G02F 11335

Patent

active

055702104

ABSTRACT:
A liquid crystal device including a liquid crystal layer comprising a liquid crystal of a dispersed type in which liquid crystal molecules are randomly distributed so that an incident light impinging against the liquid crystal molecules scatters to produce a white display spot. A polarizer and an analyzer are arranged on either side of the first and second transparent plates. A directional backlight is arranged on the outside of the polarizer for supplying light having a directivity in the direction perpendicular to the first and second transparent plates toward the polarizer.

REFERENCES:
patent: 4732456 (1988-03-01), Fergason
patent: 5093735 (1992-03-01), Doane
patent: 5155607 (1992-10-01), Inoue
patent: 5200845 (1993-04-01), Crooker
patent: 5208687 (1993-05-01), Yoshida et al.
patent: 5268783 (1993-12-01), Yoshinaga
patent: 5325218 (1994-06-01), Willett
patent: 5327271 (1994-07-01), Takeuchi
patent: 5372745 (1994-12-01), Yoshinaga
Nishida et al., "Projection Type Liquid Crystal Brighter than CRT, Part 4; 100 Percent Utilization of Light Using Polarizer; 90 Degree Rotation by Polarized Light-Converting System," Flat Panel Display '91, Nov. 26, 1990, pp. 225-231.

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