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:
Oct. 02, 2012
Filed:
Oct. 20, 2008
Chia-hua Chang, Pingtung, TW;
Hua-shu Wu, Hsinchu, TW;
Tsung-mu Lai, Hsinchu, TW;
Taiwan Semiconductor Manufacturing Co., Ltd., Hsin-Chu, TW;
Abstract
Methods of fabricating a microelectromechanical structure are provided. An exemplary embodiment of a method of fabricating a microelectromechanical structure comprises providing a substrate. A first patterned sacrificial layer is formed on portions of the substrate, the first patterned sacrificial layer comprises a bulk portion and a protrusion portion. A second patterned sacrificial layer is formed over the first sacrificial layer, covering the protrusion portion and portions of the bulk portion of the first patterned sacrificial layer, wherein the second patterned sacrificial layer does not cover sidewalls of the first patterned sacrificial layer. An element layer is formed over the substrate, covering portions of the substrate, the first patterned sacrificial layer and second patterned sacrificial layer. The first and second patterned sacrificial layers are removed, leaving a microstructure on the substrate.