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:
Jan. 06, 2015
Filed:
Jun. 28, 2013
Taiwan Semiconductor Manufacturing Company Limited, Hsin-Chu, TW;
Ming Chyi Liu, Hsinchu, TW;
Sheng-de Liu, Zhongli, TW;
Chi-Ming Chen, Zhubei, TW;
Yuan-Tai Tseng, Zhubei, TW;
Chung-Yen Chou, Hsinchu, TW;
Chia-Shiung Tsai, Hsin-Chu, TW;
Taiwan Semiconductor Manufacturing Company Limited, Hsin-Chu, TW;
Abstract
Among other things, one or more wafer edge protection structures and techniques for forming such wafer edge protection structures are provided. A substrate of a semiconductor wafer comprises an edge, such as a beveled wafer edge portion, that is susceptible to Epi growth which results in undesirable particle contamination of the semiconductor wafer. Accordingly, a wafer edge protection structure is formed over the beveled wafer edge portion. The wafer edge protection structure comprises an Epi growth resistant material, such as an amorphous material, a non-crystalline material, oxide, or other material. In this way, the wafer edge protection structure mitigates Epi growth on the beveled wafer edge portion, where the Epi growth increases a likelihood of particle contamination from cracking or peeling of an Epi film resulting from the Epi growth. The wafer edge protection structure thus mitigates at least some contamination of the wafer.