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:
Sep. 04, 2012
Filed:
Sep. 02, 2009
Dar-ming Chiang, Hsinchu, TW;
Jen-luan Chen, Hsinchu, TW;
Shu-ru Lin, Hsinchu, TW;
Yan-ren Chen, Hsinchu, TW;
Dar-ming Chiang, Hsinchu, TW;
Jen-luan Chen, Hsinchu, TW;
Shu-ru Lin, Hsinchu, TW;
Yan-ren Chen, Hsinchu, TW;
Taiwan Electrets Electronics Co., Ltd., Hsinchu, TW;
Abstract
Disclosed is a 3-dimension non-bias electrets multi-touch device, comprising a first electrets thin film providing a first bias electric charge to form an electrostatic field, a first electrode, a second electrode and a controller. The first electrode is attached to the first electrets thin film and outputs a first signal when the electrostatic field is changed by a deformation of the first electrets thin film due to contact pressures of external forces. The second electrode outputs a second signal when the electrostatic field is changed. The first and second electrodes transmit the first and second signals to the controller. The controller is capable to detect and analyze positions where the contact pressures of the external forces are applied and normal vector shifts of the first electrets thin film at the positions.