Driving method for optical modulation device

Details Driving method for optical modulation device Driving method for optical modulation device

1995-05-25

1998-06-30

Hjerpe, Richard

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 95, 345 96, 345 97, 345208, G09G 336

Patent

active

057741026

ABSTRACT:
A driving method for an optical modulation device comprising matrix picture elements each formed at intersecting points of scanning lines and data lines between which a bistable optical modulation material represented by a ferroelectric liquid crystal is interposed. The driving method comprises an erasure step of applying a voltage signal orienting the optical modulation material to the first stable state between the scanning and data lines, at all or a part of the matrix picture elements, and a writing step of sequentially applying a scanning selection signal to the scanning lines and applying an information orientation signal orienting the optical modulation material to the second stable state to the data lines in phase with the scanning selection signal.

REFERENCES:
patent: 4655561 (1987-04-01), Kanbe et al.
patent: 5092665 (1992-03-01), Kanbe et al.
patent: 5448383 (1995-09-01), Kanbe et al.

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