Method and devices for optimizing the contrast and the angle of view of a liquid crystal display
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 10, 1992
Grant Date -
N/A
app pub date -
Sep 24, 1990
filing date -
Sep 22, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method is provided for optimizing the contrast and the angle of view of a liquid crystal display, this method consisting in periodically energizing a given zone of the display, permanently measuring the luminance of this zone so as to obtain at all times a pair of values corresponding respectively to the luminance of the zone in the energized state and to the luminance of the zone in the de-energized state, determining the contrast from the values of each of said pairs each of the measured luminance values and adjusting the control voltage of the cell display as a function of the contrast thus defined.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully