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. 14, 2020
Filed:
May. 23, 2018
Applicant:
Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;
Inventor:
Tsjerk Hans Hoekstra, Balerno, GB;
Assignee:
Cirrus Logic, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 19/04 (2006.01); H04R 1/08 (2006.01); H04R 19/00 (2006.01); B81B 3/00 (2006.01);
U.S. Cl.
CPC ...
H04R 19/04 (2013.01); B81B 3/0072 (2013.01); B81B 3/0086 (2013.01); H04R 19/005 (2013.01); B81B 2201/0257 (2013.01); B81B 2203/0127 (2013.01); B81B 2203/04 (2013.01); B81B 2207/012 (2013.01); B81B 2207/015 (2013.01); H04R 2201/003 (2013.01);
Abstract
The application describes MEMS transducers having a patterned membrane electrode which incorporates a plurality of openings or voids. At least a portion of the peripheral edge of the opening is provided with a plurality of discontinuities e.g. projections and recesses which extend within the plane of the membrane electrode.