Matrix addressing of display devices

Details Matrix addressing of display devices Matrix addressing of display devices

1981-06-04

1984-10-16

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

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

340719, 340805, 340791, 350330, G09G 336

Patent

active

044778058

ABSTRACT:
In a matrix array liquid crystal display on silicon with an a.c. drive involving periodic reversal of the potential of the counter-electrode this reversal is liable to produce a significant r.m.s. error voltage at each reversal. The OFF element error voltage is effectively eliminated by blanking all picture elements at the commencement of each reversal, and the ON error voltage more evenly shared by making this reversal occur after a non-integral number of frame scans.

REFERENCES:
patent: 3973254 (1976-08-01), Nomiya et al.
patent: 4227193 (1980-10-01), Shanks
patent: 4250503 (1981-02-01), Shanks

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