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:
Jun. 23, 2015
Filed:
Dec. 28, 2011
Yu Kuang, Hsinchu, TW;
Yong Nien Rao, Hsinchu, TW;
Shih Tzung Chou, Zhudong Township, Hsinchu County, TW;
Tsung Lin Wu, Sanchong, TW;
Yu Kuang, Hsinchu, TW;
Yong Nien Rao, Hsinchu, TW;
Shih Tzung Chou, Zhudong Township, Hsinchu County, TW;
Tsung Lin Wu, Sanchong, TW;
Raydium Semiconductor Corporation, Hsinchu, TW;
Abstract
The present invention discloses a control device for a touch panel that comprises a plurality of X-directional sensing lines and Y-directional sensing lines. The X-directional sensing lines and Y-directional sensing lines are arranged in an interlaced manner. The control device comprises a clock generation circuit, a selection module, a driving signal generation circuit, a differential detection module, and a digital-to-analog conversion module. The selection module selects a first sensing line and a second sensing line from the X-directional sensing lines or Y-directional sensing lines. The driving signal generation circuit generates first and second driving signals to the first and second sensing lines, respectively. The digital to analog conversion module selectively outputs a first voltage to the first sensing line or outputs a second voltage to the second sensing line. The operation frequency of the touch panel can be increased using the control device of the present invention.