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:
Apr. 08, 2014
Filed:
Dec. 21, 2009
Tzong-che Ho, Hsinchu, TW;
Lung-tai Chen, Fengshan, TW;
Yao-jung Lee, Rende Township, TW;
Chao-ta Huang, Hsinchu, TW;
Li-chi Pan, Baoshan Township, TW;
Yu-sheng Hsieh, Zhubei, TW;
Tzong-Che Ho, Hsinchu, TW;
Lung-Tai Chen, Fengshan, TW;
Yao-Jung Lee, Rende Township, TW;
Chao-Ta Huang, Hsinchu, TW;
Li-Chi Pan, Baoshan Township, TW;
Yu-Sheng Hsieh, Zhubei, TW;
Abstract
A capacitive transducer and fabrication method are disclosed. The capacitive transducer includes a substrate, a first electrode mounted on the substrate, a cap having a through-hole and a cavity beside the through-hole, a second electrode mounted on the cap across the through-hole. The second electrode is deformable in response to pressure fluctuations applied thereto via the through-hole and defines, together with the first electrode, as a capacitor. The capacitor includes a capacitance variable with the pressure fluctuations and the cavity defines a back chamber for the deformable second electrode.