Liquid crystal display device

Details Liquid crystal display device Liquid crystal display device

2011-03-22

2011-03-22

Yenke, Brian (Department: 2422)

Television

Image signal processing circuitry specific to television

Color balance or temperature

C348S690000, C348S687000, C348S730000, C348S802000, C345S077000, C345S088000

Reexamination Certificate

active

07911541

ABSTRACT:
A liquid crystal display device includes a four-color conversion circuit with no chromatic changes in which the chromaticity and luminance of input image data are maintained, a four-color conversion circuit with chromatic changes in which the chromaticity and luminance of input image data are not necessarily maintained, and a selector for switching between the outputs from the two conversion circuits according to a level detection signal from a level detection circuit that detects whether the level of input image data is equal to 100% white level or higher. Display data from the selector is supplied to a liquid crystal section that displays an image by four-color pixels of red, green, blue, and white. The image data conversion circuit controls the light emission quantity of a backlight (BL) as white color, and converts input image data so that the level of data displayed on the liquid crystal section becomes uniform.

REFERENCES:
patent: 5731794 (1998-03-01), Miyazawa
patent: 6177915 (2001-01-01), Beeteson et al.
patent: 6795063 (2004-09-01), Endo et al.
patent: 6952195 (2005-10-01), Arakawa
patent: 7505053 (2009-03-01), Brown Elliott et al.
patent: 7511877 (2009-03-01), Kim et al.
patent: 7583279 (2009-09-01), Brown Elliott et al.
patent: 2002/0011979 (2002-01-01), Nitta et al.
patent: 2003/0151694 (2003-08-01), Lee et al.
patent: 2004/0046725 (2004-03-01), Lee
patent: 2004/0201562 (2004-10-01), Funamoto et al.
patent: 2005/0052364 (2005-03-01), Otawara et al.
patent: 2005/0057486 (2005-03-01), Aoki et al.
patent: 2005/0088385 (2005-04-01), Elliott et al.
patent: 2005/0141217 (2005-06-01), Kim
patent: 2005/0169551 (2005-08-01), Messing et al.
patent: 2005/0185100 (2005-08-01), Akiyama
patent: 2007/0024557 (2007-02-01), Rho et al.
patent: 2007/0058115 (2007-03-01), Utsumi et al.
patent: 2007/0176862 (2007-08-01), Kurt et al.
patent: 57-144590 (1982-09-01), None
patent: 08-065698 (1996-03-01), None
patent: 2001-147666 (2001-05-01), None
patent: 2001-154636 (2001-06-01), None
patent: 3215400 (2001-07-01), None
patent: 2002-41004 (2002-02-01), None
patent: 2002-0410004 (2002-02-01), None
patent: 2002-149116 (2002-05-01), None
patent: 2002-333858 (2002-11-01), None
patent: 2003-295812 (2003-10-01), None
patent: 2004-102292 (2004-04-01), None
patent: WO 01/37249 (2001-05-01), None
patent: WO 01/37251 (2001-05-01), None
IDRC'03 p. 65 Uchida et al.
ITU-R Recommendation 705-9 pp. 1-31.
Uchida et al, “Progress in Viewing Angle of Liquid Crystal Displays”, Department of Electronics, Graduate School of Engineering Tohoku University, Japan, IDRC'03, pp. 65-68.
“Parameter Values for the HDTV Standards for Production and International Programme Exchange”, ITU-R BT. 709-5, Recommendation 709-5, pp. 1-31.

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