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:
Oct. 18, 2005
Filed:
Apr. 23, 2001
Kazuhiro Yamada, Takatsuki, JP;
Isao Kawahara, Osaka-fu, JP;
Kazuhiro Yamada, Takatsuki, JP;
Isao Kawahara, Osaka-fu, JP;
Matsushita Electric Industrial Co., Ltd., Osaka-fu, JP;
Abstract
In an image display device equipped with a panel having first and second electrodes, a field period is divided into a plurality of sub-field periods that each have a predetermined luminance weight, and a gray-scale image for is displayed by (a) writing sub-field image data of each sub-field period obtained by dividing input image data of the field period into the plurality of sub-field periods, into the panel through the first and second electrodes, and (b) sustaining an illumination state of ON or OFF in each cell for each sub-field period using luminance equivalent to a luminance weight of each sub-field period. The image display device includes an image changing unit for changing a part of sub-field image data of a predetermined sub-field period, so that a total number of charges and discharges performed on the first electrode when writing the sub-field image data becomes smaller.