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. 04, 2023
Filed:
Jun. 08, 2021
Aac Acoustic Technologies (Shenzhen) Co., Ltd., Shenzhen, CN;
Yannick Pierre Kervran, HK, FR;
Rui Zhang, Shenzhen, CN;
AAC Acoustic Technologies (Shenzhen) Co., Ltd., Shenzhen, CN;
Abstract
A comb-like capacitive microphone includes a substrate penetrated by a cavity having an upper part provided with a step, stationary electrodes equally spaced on the step, and a diaphragm received in the step and including a vibrating portion and a connecting portion connected to the vibrating portion. Movable electrodes protrude from a periphery of the vibrating portion, and an end of the connecting portion away from the vibrating portion is connected to the substrate. The stationary electrodes are arranged in a comb shape and directly etched on the substrate, and the movable electrodes are arranged in a comb shape. The stationary electrodes are spatially separated from the movable electrodes, each stationary electrode is corresponding to each movable electrode. Such structure of the comb-like capacitive microphone offers a relatively large displacement, to decrease the acoustic noise and to offer a high sensitivity, and eventually a sound transducer with high performances.