Method and circuits for driving a liquid crystal display device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 20, 1987
Grant Date -
N/A
app pub date -
Jun 11, 1985
filing date -
Jun 11, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and circuits for multiplex driving of a multielement liquid crystal display device having a ferroelectric liquid crystal therein. The method includes the step of applying at least one selecting electric field pulse having an amplitude which exceeds a threshold value of optical response of the ferroelectric liquid crystal to each element during a selecting term. It further includes the step of applying at least one non-selecting electric field pulse having an amplitude which is no greater than threshold value to each element at a time other than the selecting term. The optical response of the ferroelectric liquid crystal is determined in accordance with waveforms of the selecting and non-selecting pulses. According to the invention the duration of the non-selecting pulses is much smaller than the time between selecting terms. The width of the non-selecting pulses is minimized.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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