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:
Nov. 13, 2018
Filed:
Dec. 18, 2015
Robert Bosch Gmbh, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A MEMS microphone having a backplate, a spring, and a membrane. In one embodiment, the membrane is supported in an approximate center of the membrane via a support. The support is connected to the approximate center of the membrane and an approximate center of the backplate. The membrane is connected to a spring that provides an electrical connection. The membrane may be electrically biased via the electrical connection. One or more overtravel stops are fixed to the backplate and pass through an aperture of the membrane. The overtravel stops are configured to prevent movement of the membrane in a radial direction opposite to the backplate. The membrane includes a stress gradient, a corrugation, or another structure that sets or determines a stiffness of the membrane.