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:
May. 27, 2025
Filed:
Jul. 20, 2022
Aac Kaitai Technologies (Wuhan) Co., Ltd, Hubei, CN;
AAC Kaital Technologies (Wuhan) CO., LTD, Wuhan, CN;
Abstract
The present invention provides a MEMS piezoelectric speaker including a substrate with a back cavity, a diaphragm, a capacitive system and a flexible film. The diaphragm includes a fixed end, a suspended end. Adjacent suspended ends are at least partially spaced to form a slit. The suspended end includes a support section and a piezoelectric section. Along the thickness direction of the MEMS piezoelectric speaker, a flexible film is at least partially spaced from the diaphragm and the flexible film is spaced from the substrate. This design can improve the sound pressure level of the MEMS piezoelectric speaker in the middle and high frequency, and improve the acoustic performance of the MEMS piezoelectric speaker.