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. 26, 2016
Filed:
Jul. 25, 2014
Omron Corporation, Kyoto-shi, Kyoto, JP;
Koji Momotani, Kyoto, JP;
Takashi Kasai, Shiga, JP;
OMRON Corporation, Kyoto, JP;
Abstract
A microphone has a package, and an acoustic sensor, an under surface of which is fixed to an inner face of the package. The acoustic sensor has a substrate having a plurality of hollows penetrating the substrate from a top surface to an under surface, and a capacitor structure made by a movable electrode plate and a fixed electrode plate disposed above each of the hollows. A package sound hole is opened in the package in a position opposed to the under surface of the acoustic sensor. A dent which is communicated with each of the hollows and open below the under surface side of the substrate is formed below the under surface of the substrate. A height of the dent measured from the under surface of the substrate is equal to or less than half of a height of the hollow.