Liquid crystal display device

Details Liquid crystal display device Liquid crystal display device

1989-09-05

1993-05-25

Hjerpe, Richard

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

358160, 358236, G09G 336

Patent

active

052144186

ABSTRACT:
A liquid crystal display device for image display realizing clear and optimum image display by comprising a brightness detector for detecting brightness of image signal after digital conversion and a voltage dividing circuit for outputting the reference voltage in the level depending on the detected value in view of adjusting contrast of display screen by judging brightness of image signal and controlling the reference voltage.

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patent: 4864290 (1989-09-01), Waters
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