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:
Jul. 07, 2015
Filed:
Aug. 31, 2012
Naoki Shiobara, Osaka, JP;
Hirofumi Murakami, Osaka, JP;
Naoki Shiobara, Osaka, JP;
Hirofumi Murakami, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An object is to moderate the occurrence of mura in an oblique view in an image display device that conducts area active driving. An emission luminance calculator () computes a luminance (first emission luminance) () of LEDs in respective areas on the basis of an input image (). The emission luminance corrector () applies a correction to the first emission luminance () on the basis of correction data () in an LED filter (). Herein, provided that a first image is defined as an image displayed in the case of being externally given an image in which a high-gradation region and a low-gradation region neighbor each other as the input image (), the emission luminance corrector () uses the LED filter () to compute a second emission luminance (), thereby setting the values of correction data () stored in the LED filter () so as to yield a constant degree of spatial variation in the output gradations between the high-gradation region and the low-gradation region in the case of viewing the first image from a designated oblique direction.