Liquid crystal apparatus with temperature compensation control c

Details Liquid crystal apparatus with temperature compensation control c Liquid crystal apparatus with temperature compensation control c

1989-08-10

1991-07-23

Miller, Stanley D.

Communications: electrical

Land vehicle alarms or indicators

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

350332, 350333, 340784, G02F 113

Patent

active

050338226

ABSTRACT:
A liquid crystal apparatus is provided a liquid crystal display comprising scanning electrodes, data electrodes disposed opposite to and intersecting with the scanning electrodes so as to form an electrode matrix, and a ferroelectric liquid crystal disposed between the scanning electrodes and data electrodes. A first circuit is further provided for applying a scanning selection signal having a duration of one scanning selection period 1H to the scanning electrodes and applying data signals to the data electrodes in synchronism with the scanning selection signal so as to apply a drive voltage having an amplitude V.sub.OP to the liquid crystal. A control circuit controls the first circuit so as to change the one scanning selection period 1H by a change .DELTA.1H and the drive voltage amplitude V.sub.OP by a change .DELTA.V.sub.OP corresponding to a change in ambient temperature, the changes .DELTA.1H and .DELTA.V.sub.OP satisfying the following formula (1):

REFERENCES:
patent: 4319237 (1982-03-01), Matsuo et al.
patent: 4367924 (1983-01-01), Clark et al.
patent: 4548476 (1985-10-01), Kaneko
patent: 4563059 (1986-01-01), Clark et al.
patent: 4639089 (1987-01-01), Okada et al.
patent: 4655561 (1987-04-01), Kanbe et al.
patent: 4674839 (1987-06-01), Tsuboyama et al.
patent: 4682858 (1987-07-01), Kanbe et al.
patent: 4697887 (1987-10-01), Okada et al.
patent: 4709994 (1987-12-01), Kanbe et al.
patent: 4709995 (1987-12-01), Kuribayashi et al.
patent: 4712872 (1987-12-01), Kanbe et al.
patent: 4712873 (1987-12-01), Kanbe et al.
patent: 4712874 (1987-12-01), Sekimura et al.
patent: 4712875 (1987-12-01), Tsuboyama et al.
patent: 4712877 (1987-12-01), Okada et al.
patent: 4714323 (1987-12-01), Katagiri et al.
patent: 4747671 (1988-05-01), Takahashi et al.
patent: 4902107 (1990-02-01), Tsuboyama et al.
patent: 4923285 (1990-05-01), Ogino et al.
patent: 4952032 (1990-08-01), Inoue et al.

Affiliated with

Also associated with

Rating

Liquid crystal apparatus with temperature compensation control c does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Liquid crystal apparatus with temperature compensation control c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystal apparatus with temperature compensation control c will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-428685