Ferroelectric liquid crystal apparatus having separate display a

Details Ferroelectric liquid crystal apparatus having separate display a Ferroelectric liquid crystal apparatus having separate display a

1989-12-14

1992-08-04

Brier, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

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

340805, 340811, G09G 336

Patent

active

051362821

ABSTRACT:
A ferroelectric liquid crystal apparatus of the matrix type which includes a display portion provided with separate display areas which are arranged to be independently driven and a method of driving such a ferroelectric liquid crystal apparatus. In the method, dummy signals are applied to signal electrodes of one of the separate display areas while the other display area is being scanned in order to reduce differences in contrast.

REFERENCES:
patent: 4485380 (1984-11-01), Soneda et al.
patent: 4655561 (1987-04-01), Knobe et al.
patent: 4693563 (1987-09-01), Harada et al.
patent: 4778260 (1988-10-01), Ohada et al.
patent: 4844590 (1987-07-01), Okada et al.

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