Method and apparatus for driving a liquid crystal display using

Details Method and apparatus for driving a liquid crystal display using Method and apparatus for driving a liquid crystal display using

1996-09-18

1999-08-17

Nguyen, Chanh

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 95, G09G 336

Patent

active

059400625

ABSTRACT:
A method and an apparatus for driving a passive liquid crystal display to obtain a high contrast ratio for both still image and video modes includes driving some or all of the row lines simultaneously. The row voltage wave forms are defined as a set of orthogonal functions and the column voltage wave forms are defined as a linear combination of the row voltages. The mean square voltage across each pixel and row is specified, and the corresponding column coefficient is calculated from which all coefficients in a column can be determined.

REFERENCES:
patent: 5459495 (1995-10-01), Scheffer et al.

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