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:
Sep. 08, 2010
Atsushi Umezaki, Kanagawa, JP;
Satohiro Okamoto, Shizuoka, JP;
Atsushi Umezaki, Kanagawa, JP;
Satohiro Okamoto, Shizuoka, JP;
Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;
Abstract
A new driving method of a display device that makes it possible to reduce power consumption and to improve display quality is proposed. A first gray scale is displayed in all pixels in a first initialization period, a second gray scale is displayed in all the pixels in a second initialization period, an objective image is displayed in a writing period, and the image is held in a holding period. Alternatively, an electrical history of a gray scale storage display element for displaying a number of gray scales is erased in the first initialization period and the second initialization period. Alternatively, a potential of a common electrode is changed in the first initialization period, the second initialization period, the writing period, and the holding period. Alternatively, a potential of a capacitor wiring is changed in synchronization with the potential of the common electrode.