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:
Dec. 06, 2022
Filed:
Feb. 21, 2020
Innogrity Pte Ltd, Singapore, SG;
Kathirgamasundaram Sooriakumar, Rochester, NY (US);
Anu Austin, Lengkong Tiga, SG;
Ian Rose Bihag, Cebu, PH;
Kathirgamasundaram Sooriakumar, Rochester, NY (US);
Anu Austin, Lengkong Tiga, SG;
Ian Rose Bihag, Cebu, CH;
Boon Wah Soh, Singapore, SG;
Jane Jiaying Soh, Singapore, SG;
Other;
Abstract
A capacitive transducer or microphone includes a first substrate of one or more layers and which includes a first surface, a first cavity in the first surface, and a mesa diaphragm that spans the first cavity. The capacitive transducer or microphone includes a second substrate fixed to the first substrate. The second substrate has one or more layers which includes a second cavity having a nonplanar (e.g., contoured or structured or stepped) bottom surface that faces the mesa diaphragm. A shape or relief of the bottom surface of the cavity may advantageously be, to at least some degree, complementary to a deformed shape of the diaphragm. The second substrate may include one or more acoustic holes, non-uniformly distributed thereacross. One or more vents may vent the second cavity.