Display device which reduces variation in chromaticity of...

Details Display device which reduces variation in chromaticity of... Display device which reduces variation in chromaticity of...

2011-06-07

2011-06-07

Shalwala, Bipin (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

Intensity or color driving control

C345S102000

Reexamination Certificate

active

07956875

ABSTRACT:
A display device configured to realize a high display quality by correcting irregularity, caused by a lighting unit, by signal processing. The target light quantity in a displayed image of the liquid crystal panel is set, the estimated light quantity at each pixel location in the plane of the backlight is calculated, matrix coefficients are calculated based on the estimated light quantity and the target light quantity, image signals are subjected to matrix operations using the matrix coefficients, and the liquid crystal panel is driven by image signals resulting from the matrix operations. Therefore, the light quantity distribution in the displayed image becomes identical to the target light quantity distribution.

REFERENCES:
patent: 6570611 (2003-05-01), Satou et al.
patent: 7129456 (2006-10-01), Ioka et al.
patent: 2005/0174342 (2005-08-01), Maeyama et al.
patent: 1568017 (2005-01-01), None
patent: 08-313789 (1996-11-01), None
patent: 2005-258404 (2005-09-01), None
patent: 2006-145798 (2006-06-01), None
Office Action with mailing date of Aug. 22, 2008 (with translation).

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