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. 27, 2012
Filed:
Jul. 31, 2008
Po-hsun Song, Tainan, TW;
Jen-yi Chen, Sinpu Township, TW;
Kai-hsiang Yen, Taipei, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
An acoustic transducer comprises a substrate, a membrane configured to move relative to the substrate, a number of supports configured to suspend the membrane over the substrate, a first group of projections extending from the membrane, and a second group of projections extending from the substrate, the second group of projections being interweaved with and movable relative to the first group of projections, wherein each projection of one group of the first group of projections and the second group of projections is composed of a first conductive layer, a second conductive layer and a dielectric layer between the first conductive layer and the second conductive layer, and each projection of the other one group of the first group of projections and the second group of projections is composed of a third conductive layer.