Driving method and driving circuit for ferroelectric liquid crys

Details Driving method and driving circuit for ferroelectric liquid crys Driving method and driving circuit for ferroelectric liquid crys

1998-03-25

2000-07-25

Brier, Jeffery

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 97, G09G 336

Patent

active

060941847

ABSTRACT:
A ferroelectric liquid crystal display element is structured so that ferroelectric liquid crystal is provided between a plurality of signal line electrodes and a plurality of scanning line electrodes running perpendicular to one another, and includes a signal line electrode driving circuit made up of a gray-scale signal amplifying circuit and a gray-scale signal producing circuit, and a scanning line electrode driving circuit made up of a scanning signal amplifying circuit and a scanning signal producing circuit. The signal line electrode driving circuit applies to the signal line electrodes gray-scale signals including pulses which are phase modulated in accordance with a gray-scale level, and the scanning line electrode driving circuit selectively applies to the scanning line electrodes scanning signals including, in each scanning period, an erasure voltage, a selection voltage, and a non-selection voltage. Driving characteristics obtained by these means are more stable than those obtained using amplitude-modulated or frequency-modulated gray-scale signals. As a result, intermediate shades can be stably displayed in a display element using ferroelectric liquid crystal.

REFERENCES:
patent: 5126864 (1992-06-01), Akiyama et al.
patent: 5812230 (1998-09-01), Sakaigawa et al.
Search Report for Application No. GB 9806885.1; Mailed Jun. 25, 1998.
U.S. Patent Application Serial No. 09/066,105; Filed Apr. 24, 1998.

Affiliated with

Also associated with

Rating

Driving method and driving circuit for ferroelectric liquid crys does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Driving method and driving circuit for ferroelectric liquid crys, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driving method and driving circuit for ferroelectric liquid crys will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1339834