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:
Dec. 20, 2016
Filed:
Oct. 09, 2014
Panasonic Liquid Crystal Display Co., Ltd., Himeji-shi, Hyogo, JP;
Kazuo Kita, Osaka, JP;
Panasonic Liquid Crystal Display Co., Ltd., Hyogo, JP;
Abstract
To achieve improved detection accuracy and position resolution in an in-cell type capacitive touch sensor embedded in a liquid crystal panel of a liquid crystal display device, a drive electrode of a touch sensor is formed of a transparent conductive film laminated on a surface of a TFT substrate on a liquid crystal side below a pixel electrode, and disposed in a region between gate lines. A detection electrode is formed of a transparent conductive film laminated on an outward-directed surface of the TFT substrate. A drive signal is supplied to the drive electrode to cause a voltage change, and based on the voltage change in the detection electrode caused thereby, a capacitance change in an opposing part between the drive electrode and the detection electrode is detected, to thereby detect contact of an object to a display surface near the opposing part in a liquid crystal panel.