Liquid crystal display device having separate driving circuits f

Details Liquid crystal display device having separate driving circuits f Liquid crystal display device having separate driving circuits f

1988-03-14

1989-04-25

Miller, Stanley D.

Communications: electrical

Land vehicle alarms or indicators

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

350332, 350336, 340765, 340784, 340805, G02F 113

Patent

active

048242128

ABSTRACT:
A liquid crystal display device comprising a display screen and liquid crystal element-driving circuits. The display screen has an effective display region with a plurality of transparent electrodes on both sides of liquid crystal elements to make characters visible and a non-display region that is the region other than the effective display region. The driving circuits are divided into two groups. One group is for driving the liquid crystal elements in the effective display region to display desired characters, and the other group is for driving the liquid crystal elements in the non-display region to make the non-display region dark or bright.

REFERENCES:
patent: 4224617 (1980-09-01), Stein
patent: 4443062 (1984-04-01), Togashi et al.
patent: 4656470 (1987-04-01), Saka
patent: 4662718 (1987-05-01), Masubuchi
patent: 4748444 (1988-05-01), Arai
patent: 4759609 (1988-07-01), Clerc
patent: 4764766 (1988-08-01), Aoyama et al.

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