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:
May. 22, 2012
Filed:
Dec. 29, 2008
Min Kyung Lee, Kyungbuk, KR;
Jun Hyeok Yu, Seoul, KR;
Chang Keun Park, Daegu, KR;
LG Display Co., Ltd., Seoul, KR;
Abstract
A liquid crystal display includes a transparent conductive layer on an first substrate of a liquid crystal display panel transmitting display light, an insulating layer on the transparent conductive layer, a sensing circuit to generate a touch or non-touch sensing signal based on changes in the amount of surface charge of the transparent conductive layer depending on whether or not the insulating layer is touched, and a driving voltage supply circuit to generate a driving voltage of a high potential for a light sensing operation of a touch sensor circuit only when the touch or non-touch sensing signal indicates that the insulating layer is touched.