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. 22, 2026
Filed:
Jul. 17, 2024
Fortemedia, Inc., Alviso, CA (US);
Yu-Xuan Xu, Hsinchu City, TW;
Ya-Chun Chang, Hsinchu City, TW;
Quanli Lu, Alviso, CA (US);
Shih-Chin Gong, Taipei City, TW;
FORTEMEDIA, INC., Alviso, CA (US);
Abstract
A micro speaker structure is provided, including a substrate, a diaphragm, a coil, a carrier board, and a permanent magnetic element. The substrate has a hollow chamber. The diaphragm is disposed over the substrate and covers the hollow chamber. The diaphragm includes an etching pattern recessed form a first surface of the diaphragm. Etching patterns are used to increase sound pressure level at special frequency range. The coil is embedded in the diaphragm. The carrier board is disposed on the bottom surface of the substrate. The permanent magnetic element is disposed on the carrier board and in the hollow chamber. The first surface of the diaphragm faces the permanent magnetic element.