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. 06, 2011
Filed:
Jul. 09, 2009
Takuya Eriguchi, Yokosuka, JP;
Yasuyuki Kudo, Tokyo, JP;
Norio Mamba, Kawasaki, JP;
Tsutomu Furuhashi, Yokohama, JP;
Hideo Sato, Hitachi, JP;
Takuya Eriguchi, Yokosuka, JP;
Yasuyuki Kudo, Tokyo, JP;
Norio Mamba, Kawasaki, JP;
Tsutomu Furuhashi, Yokohama, JP;
Hideo Sato, Hitachi, JP;
Hitachi Displays, Ltd., Chiba, JP;
Panasonic Liquid Crystal Display Co., Ltd., Hyogo-Ken, JP;
Abstract
A touch sensor () comprises a plurality of X-coordinate electrodes, a plurality of Y-coordinate electrodes placed crossing the X-coordinate electrodes with an insulating layer therebetween, a plurality of X-coordinate auxiliary electrodes which are extended from X-coordinate electrodes, and a plurality of Y-coordinate auxiliary electrodes which are extended from Y-coordinate electrodes, the plurality of X and Y-coordinate electrodes being placed in a two-dimensional matrix form on a display surface of a display device () for detecting a change of capacitance due to pressing. A detection circuit () which detects a change in capacitance of the touch sensor (), an analog-to-digital converter () which converts a detection output of the detection circuit () into digital data, a touch panel control circuit () which determines a touched coordinate, and a primary control circuit () which receives input of touch coordinate data from the touch panel control circuit () are provided.