Addressing method for a multiplexable, bistable liquid crystal d

Details Addressing method for a multiplexable, bistable liquid crystal d Addressing method for a multiplexable, bistable liquid crystal d

1983-09-22

1986-08-26

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

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

340802, 350350S, G09G 334

Patent

active

046085580

ABSTRACT:
An addressing method for a multiplexable, bistable liquid crystal display wherein a first driving voltage which is larger than a first limiting voltage is applied to the selected display elements and a second driving voltage which is smaller than a second limiting voltage is applied to the non-selected display elements. For the first driving voltage only a first optical state is stable, and for the second driving voltage only a second optical state is stable. All the display elements are simultaneously switched on the display by means of a single writing voltage pulse. By this means a high-contrast, constant and immediate display is achieved over the entire active area. Row-at-a-time writing is also possible. Moreover, a liquid crystal display is introduced which is based upon the bistability effect and which employs a guest-host liquid crystal containing a chiral additive. The layer thickness of the liquid crystal is less than 10 .mu.m and the ratio of the layer thickness (d) to the liquid crystal pitch (p) of the guest-host liquid crystal lies between 0.5 and 1.75. Spacer particles are distributed over the entire active area of the display.

REFERENCES:
patent: 3982239 (1976-09-01), Shen
patent: 4040721 (1977-08-01), Kurita
patent: 4062626 (1977-12-01), Kawakami et al.
patent: 4191955 (1980-03-01), Robert
patent: 4212010 (1980-07-01), Walter
patent: 4252417 (1981-02-01), Scheffer et al.
patent: 4272162 (1981-06-01), Togashi et al.
patent: 4291948 (1981-09-01), Crossland et al.
patent: 4400059 (1983-08-01), Nagae et al.
patent: 4481511 (1984-11-01), Hanmura et al.
patent: 4490015 (1984-12-01), Kawarada et al.

Affiliated with

Also associated with

Rating

Addressing method for a multiplexable, bistable liquid crystal d does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Addressing method for a multiplexable, bistable liquid crystal d, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Addressing method for a multiplexable, bistable liquid crystal d will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2314424