TFT liquid crystal display device having a grayscale voltage gen

Details TFT liquid crystal display device having a grayscale voltage gen TFT liquid crystal display device having a grayscale voltage gen

1995-11-09

1998-12-29

Nguyen, Chanh

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

345 89, G09G 500

Patent

active

058546278

ABSTRACT:
The liquid crystal display device includes a resistive string that divides each of voltage ranges between reference voltages to generate multi-level grayscale voltages to be applied to the liquid crystal layer. The resistances between the terminals of the resistive string to which the reference voltages are applied are set to magnitudes almost proportional to voltage differences between the reference voltages. This makes it possible to provide a liquid crystal display device with low power consumption and high picture quality.

REFERENCES:
patent: 5130703 (1992-07-01), Fairbanks et al.
patent: 5495287 (1996-02-01), Kasai et al.
patent: 5517212 (1996-05-01), Inoue
patent: 5703617 (1997-12-01), Callahan, Jr. et al.
SID 94 Digest, "Low-Power 6-bit Column Driver for AMLCDs" pp. 351-354 (1994) by B. Conner, et al.

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