The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9384689 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 05, 2016

Filed:

Jul. 23, 2013
Applicant:

Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;

Inventor:

Ryo Yamakawa, Osaka, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/36 (2006.01); G09G 3/20 (2006.01); G02F 1/133 (2006.01); G02F 1/1335 (2006.01);
U.S. Cl.
CPC ...
G09G 3/2003 (2013.01); G02F 1/13306 (2013.01); G02F 1/133514 (2013.01); G09G 3/20 (2013.01); G09G 3/2007 (2013.01); G09G 3/36 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0276 (2013.01); G09G 2320/0285 (2013.01);
Abstract

An object of the present invention is to improve display quality in oblique view in a liquid crystal display device employing a multi-gap structure. After a gradation-transmittance characteristic when a liquid crystal panel is viewed from an oblique direction is acquired, a range of a gradation value in which a difference between a maximum value and a minimum value among three transmittances corresponding to each of the gradation values is minute is defined as a transmittance approximation range. A white balance parameter stored in a white balance adjustment LUT () is determined so that a maximum gradation value after correction by white balance adjustment for each color is set to the gradation value within the transmittance approximation range. By using the white balance parameter determined in this manner, the white balance adjustment is performed during operation of the liquid crystal display device.


Find Patent Forward Citations

Yamakawa, Ryo. (2016). Viewing angle characteristic improving method in liquid crystal display device, and liquid crystal display device (U.S. Patent No. 9384689). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9384689

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…