Liquid crystal display including a control member for providing

Details Liquid crystal display including a control member for providing Liquid crystal display including a control member for providing

1995-05-05

1997-09-23

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Particular illumination

349 57, G02F 11335

Patent

active

056710283

ABSTRACT:
In an lighting device, light rays, which have been illuminated from a discharge tube onto a light-guiding body and have been released from a light-emitting surface of the light-guiding body, are converged toward the normal direction by prisms each of which has a triangle- column shape and is installed on a light-converging control plate. A visual-range control plate provides a transparent visual range with a predetermined viewing angle with respect to the normal direction, while providing an opaque visual range outside the predetermined viewing angle with respect to the normal direction. This arrangement makes it possible to improve the surface luminance of the lighting device and prevent the degradation of the display quality. Thus, it is possible to achieve high-luminance, high quality lighting devices.

REFERENCES:
patent: 5600456 (1997-02-01), Maruyama et al.
New Backliting Technologies for Liquid Crystal Display (IV), ITEJ Technical Report, vol. 17, No. 48, Aug. 27, 1993--pp. 33-38.
Goldberg, David E.; Genetic Algorithms in Search, Optimization, and Machine Learning, (Jan. 1989) pp. 1-54.
"IEEE Standard Test Access Port and Boundary-Scan Architecture", Circuits and Devices Communications Technology, IEEE Std 11.49.1 1990 (includes IEEE Std 1149.1A-1993), Oct. 21, 1993.

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