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. 03, 2013
Filed:
Jul. 29, 2008
Josef Lutz, Rohrau, AT;
Stefan Leitner, Baden, AT;
Josef Lutz, Rohrau, AT;
Stefan Leitner, Baden, AT;
Knowles Electronics Asia PTE. Ltd., Singapore, SG;
Abstract
An electro-acoustic transducer () is disclosed, comprising a substrate () that comprises conducting paths (), a cover () attached to said substrate () thus forming an inner chamber (A) and a space (B) outside said chamber (A), wherein said cover () comprises one or more ports (). A MEMS sensor () of said transducer () has at least one hole () extending from a first side (C) to a second side (D). A membrane () is arranged in said hole () transverse to the hole axis (E) thus forming a first hole space (a) and a second hole space (b). The sensor () furthermore has electrical connectors () designed to carry electrical signals representing sound acting on said membrane (), which connectors () are connected to said conducting paths (). According to the invention, said MEMS sensor () is arranged inside said chamber (A) in such a way that said second hole space (b) is connected to said outside space (B) via said port or ports () and said first hole space (a) is connected to said inner chamber (A).