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:
Dec. 13, 2016
Filed:
Apr. 29, 2015
Applicant:
Taiwan Semiconductor Manufacturing Co., Ltd., Hsinchu, TW;
Inventors:
Chih-Jen Chan, Changhua, TW;
Chang-Ming Wu, New Taipei, TW;
Assignee:
TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B81B 3/00 (2006.01); B81C 1/00 (2006.01);
U.S. Cl.
CPC ...
B81B 3/0005 (2013.01); B81C 1/00992 (2013.01); B81C 2201/112 (2013.01);
Abstract
A method of fabricating MEMS device includes forming a plurality of rounded edge trenches on a sacrificial layer over a carrier substrate. Then, formation of a polycrystalline silicon layer over the sacrificial layer to fill the trenches. A plurality of stoppers is defined by the trenches and protrudes from the polycrystalline silicon layer toward the carrier substrate Subsequently, a portion of the sacrificial layer is removed to define a recess between the polycrystalline silicon layer and a carrier substrate and expose the stoppers.