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.:
Date of Patent:
Feb. 25, 2014
Filed:
Nov. 24, 2011
Tohru Hanaoka, Osaka, JP;
Fumio Kokubo, Osaka, JP;
Eiji Kurimoto, Osaka, JP;
Ryoji Ishimura, Osaka, JP;
Shota Inoue, Osaka, JP;
Fumiaki Yamada, Osaka, JP;
Tohru Hanaoka, Osaka, JP;
Fumio Kokubo, Osaka, JP;
Eiji Kurimoto, Osaka, JP;
Ryoji Ishimura, Osaka, JP;
Shota Inoue, Osaka, JP;
Fumiaki Yamada, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An object of the present invention is to obtain a display device having excellent display quality by appropriately modifying the chromaticity of images. In this display device, a correction processing part (CPU) determines a first chromaticity change amount stored in memory () on the basis of a first cumulative usage amount, which is the cumulative usage amount of an LED () up to a present time, the cumulative value having been measured by a counter (), and the correction processing part also determines a second chromaticity change amount stored in the memory () on the basis of a second cumulative usage amount, which is the cumulative usage amount of the LED () up to a time when the chromaticity of a pixel is adjusted by a chromaticity adjusting part (CPU), the cumulative value having been measured by the counter (). Then, by subtracting the second chromaticity change amount from the first chromaticity change amount, the correction processing part obtains the value to which the chromaticity is to be modified, and modifies an image signal on the basis of the value to which the chromaticity is to be modified.