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:
Jan. 09, 2018
Filed:
Feb. 24, 2014
Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;
Sharp Kabushiki Kaisha, Sakai, JP;
Abstract
The invention provides a liquid crystal display device capable of preventing a reduction in display quality by suppressing the occurrence of flicker during alternating-voltage drive, as well as a method for driving the same. Overshoot drive is performed during a first frame period, which is shortened to such an extent that a 'positive effective area' and a 'negative effective area' are approximately equal in size. The duration of the first frame period is set to be greater than or equal to a quarter of one frame period at a refresh rate of 60 Hz but less than one frame period. This renders it possible to make adjustments such that luminance is inhibited from abruptly dropping immediately after a polarity change, and also luminance is prevented from becoming excessively high due to overshoot drive, and therefore, the occurrence of flicker due to flexoelectric polarization during alternating-voltage drive can be suppressed.