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:
Nov. 25, 2003
Filed:
Jul. 30, 2002
Chih Yuh Yang, San Jose, CA (US);
Douglas Bonser, Austin, TX (US);
Pei-Yuan Gao, San Jose, CA (US);
Lu You, San Jose, CA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A BARC comprising materials having a lower pinhole density than that of silicon oxynitride and materials having a coefficient of thermal expansion that is closer to the coefficient of thermal expansion of polysilicon than that of amorphous carbon is employed to reduce deformation of a pattern to be formed in a patternable layer. The patternable layer is formed over a substrate. A multi-layered anti-reflective coating is formed over the patternable layer. A photoresist pattern is formed on the coating. The coating may comprise an amorphous carbon layer formed over the patternable layer and a SiC layer having a lower pinhole density than the pinhole density of SiON formed over the amorphous carbon layer. The coating may also be formed over a polysilicon layer and comprise a thermal expansion buffer layer having a coefficient of thermal expansion that is closer to the coefficient of thermal expansion of polysilicon than that of amorphous carbon.