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:
Nov. 28, 2013
Applicant:
Solid State System Co., Ltd., Hsinchu, TW;
Inventors:
Tsung-Min Hsieh, New Taipei, TW;
Chien-Hsing Lee, Hsinchu County, TW;
Jhyy-Cheng Liou, Hsinchu County, TW;
Assignee:
Solid State System Co., Ltd., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/00 (2006.01); B81C 1/00 (2006.01);
U.S. Cl.
CPC ...
B81C 1/00928 (2013.01); B81C 1/00476 (2013.01);
Abstract
A method for releasing a diaphragm of a micro-electro-mechanical systems (MEMS) device at a stage of semi-finished product. The method includes pre-wetting the MEMS device in a pre-wetting solution to at least pre-wet a sidewall surface of a cavity of the MEMS device. Then, a wetting process after the step of pre-wetting the MEMS device is performed to etch a dielectric material of a dielectric layer for holding the diaphragm, wherein a sensing portion of the diaphragm is released from the dielectric layer.