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:
May. 13, 2008
Filed:
Sep. 19, 2005
Cha-hsin Lin, Hsinchu, TW;
Zing-way Pei, Hsinchu, TW;
Chee-wee Liu, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A method for fabricating a semiconductor device is provided. The method mainly involves steps of forming at least one first patterned high stress layer below a silicon substrate, then forming a semiconductor device onto the substrate, and forming at least one second patterned high stress layer on the semiconductor device. According to the method, the characteristics of the PMOS and the NMOS transistors formed on the same wafer may be improved simultaneously, by utilizing the stress of the patterned layers of high stress material. Further, the mobility of the carriers is enhanced, so that the output characteristic of the transistors can be improved.