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:
Mar. 20, 2018
Filed:
Sep. 08, 2014
Samsung Display Co., Ltd., Yongin, Gyeonggi-Do, KR;
Dae-Gwang Jang, Cheonan-si, KR;
Samsung Display Co., Ltd., Yongin, Gyeonggi-do, KR;
Abstract
A display device includes a display unit, a common voltage measuring unit, and a signal controller. The display unit include a plurality of pixels, each including a liquid crystal capacitor including a terminal coupled to a common electrode to receive a common voltage and a pixel electrode to receive a gray scale voltage. The common voltage measuring unit measures a change in the common voltage resulting from a coupling between the common electrode and the pixel electrode when a test image including a specific pattern is output to the display unit. The signal controller detects a level of a residual DC voltage of a liquid crystal layer between the common electrode and pixel electrode based on a measured value of the common voltage.