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:
Aug. 19, 2014
Filed:
Jul. 06, 2011
Sucheendran Sridharan, McMurray, PA (US);
John Matthew Muza, Venetia, PA (US);
Sucheendran Sridharan, McMurray, PA (US);
John Matthew Muza, Venetia, PA (US);
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A semiconductor microphone including a silicon substrate having a perimeter; an N-well diffused into the substrate at the perimeter; a deformable diaphragm disposed over at least a portion of the silicon substrate and in contact with at least a portion of the perimeter; and a signal channel in electrical communication with the diaphragm. The signal channel includes a microphone output channel and a feedback output channel. The diaphragm produces an electric signal on the signal channel in response to deformation of the diaphragm and a portion of the electric signal is transmitted on the feedback output channel to the N-well.