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. 28, 2017
Filed:
Jun. 18, 2013
Applicant:
Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;
Inventors:
Eiji Nakaue, Osaka, JP;
Shohji Sakurai, Osaka, JP;
Mutsumi Hamaguchi, Osaka, JP;
Shinji Amano, Osaka, JP;
Narakazu Shimomura, Osaka, JP;
Assignee:
SHARP KABUSHIKI KAISHA, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/045 (2006.01); G06F 3/044 (2006.01); G06F 3/041 (2006.01); G09G 5/00 (2006.01); G09G 5/18 (2006.01);
U.S. Cl.
CPC ...
G06F 3/044 (2013.01); G06F 3/0412 (2013.01); G06F 3/0416 (2013.01); G09G 5/003 (2013.01); G09G 5/18 (2013.01); G09G 2300/04 (2013.01);
Abstract
The present invention provides a touch panel controller for controlling even a large touch panel with little EMI. The touch panel controller of the present invention includes a plurality of driving circuits (DCthrough DCm) for driving respective drive lines (DLthrough DLm) of a capacitive touch panel unitby supplying driving signals (Ds) to the respective drive lines (DLthrough DLm), and a rise/fall time of each of the driving signals (Ds) is variable.