Liquid crystal display device

Details Liquid crystal display device Liquid crystal display device

1981-05-11

1983-09-20

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

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

340784, 340712, G09G 336

Patent

active

044059213

ABSTRACT:
A light crystal display device which includes a liquid crystal panel and a light pen. The liquid crystal panel includes a plurality of display dots defined by spaced electrodes having a twisted nematic liquid crystal therebetween. The display dots are selectively driven by a drive circuit between light-transmissive and non-transmissive states in a predetermined flickering timing. The light pen selectively directs light to the display dots which is caused to flicker thereby. The flickered light is detected by a sensor in the light pen and produces positioning data signals representative of the sequence of dots selected.

REFERENCES:
patent: 3618029 (1971-11-01), Graven
patent: 3768073 (1973-10-01), Rawson et al.
patent: 3775005 (1973-11-01), Szabo
patent: 3898636 (1975-08-01), Smith
patent: 3956745 (1976-05-01), Ellis
patent: 4104617 (1978-08-01), Bean et al.
patent: 4303916 (1981-12-01), Hakaridani et al.
patent: 4329684 (1982-05-01), Monteath et al.

Affiliated with

Also associated with

Rating

Liquid crystal display device 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 display device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystal display device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-590322