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:
Feb. 10, 2015
Filed:
Apr. 27, 2011
Chia-hsing Lin, Hsinchu, TW;
Yi-hsin Tao, Hsinchu, TW;
Wen-jun Hsu, Hsinchu, TW;
I-shu Lee, Keelung, TW;
Shih-yuan Hsu, Yunlin County, TW;
Chia-Hsing Lin, Hsinchu, TW;
Yi-Hsin Tao, Hsinchu, TW;
Wen-Jun Hsu, Hsinchu, TW;
I-Shu Lee, Keelung, TW;
Shih-Yuan Hsu, Yunlin County, TW;
Elan Microelectronics Corporation, Hsinchu, TW;
Abstract
Two sensing units are configured as an exciter and a sensor connected to two trace lines, respectively, for mutual capacitance sensing from the capacitance units including these two trace lines. The two sensing units connect the two trace lines together to balance them to a same voltage level first, and then disconnect them from each other. Thereafter, the exciter connects the first trace line to an excitation node to induce a charge change on the second trace line, and the sensor senses the charge change to detect the variation of the mutual capacitance between the two trace lines.