AC activated liquid crystal display cell employing dual switchin

Details AC activated liquid crystal display cell employing dual switchin AC activated liquid crystal display cell employing dual switchin

1987-08-27

1989-09-26

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

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

340784, 340805, G09G 334

Patent

active

048703966

ABSTRACT:
An active matrix liquid crystal display cell for AC operation including a first field effect transistor switch for switching video information to a first storage capacitor and a second field effect transistor switch for switching the voltage of the first storage capacitor to one side of a liquid crystal cell. The second transistor is connected to be switched on by a common signal, for example, a vertical sync signal, and the top plate voltage applied to the liquid crystal cell is alternated in synchronism with the common signal, resulting in a doubling of the effective potential applied across the liquid crystal cell.

REFERENCES:
patent: 3862360 (1975-01-01), Dill et al.
patent: 4114070 (1978-09-01), Asars
patent: 4149151 (1979-04-01), Nagae et al.
patent: 4335936 (1982-06-01), Nonomura et al.
patent: 4359729 (1982-11-01), Nonomura et al.
patent: 4393405 (1983-07-01), Ikeda
patent: 4429305 (1984-01-01), Hosokawa et al.
patent: 4432610 (1984-02-01), Kobayashi et al.
patent: 4455576 (1984-06-01), Hoshi
patent: 4471347 (1984-09-01), Nakazawa et al.
patent: 4492979 (1985-01-01), Ikeda
patent: 4496977 (1985-01-01), Ikeda
patent: 4591848 (1986-05-01), Morozumi et al.
patent: 4649383 (1987-03-01), Takeda et al.
patent: 4651149 (1987-03-01), Takeda et al.
patent: 4694349 (1987-09-01), Takeda et al.
patent: 4710768 (1987-12-01), Takeda et al.
Japanese Patent Abstract No. 59-81621; vol. 8, No. 192; Suwa Seikosha K.K.; Yoshio Yamazaki.

Affiliated with

Also associated with

Rating

AC activated liquid crystal display cell employing dual switchin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with AC activated liquid crystal display cell employing dual switchin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and AC activated liquid crystal display cell employing dual switchin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-189834