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. 20, 2014
Filed:
Oct. 19, 2012
Applied Materials, Inc., Santa Clara, CA (US);
Shuran Sheng, Santa Clara, CA (US);
Lin Zhang, San Jose, CA (US);
Zheng Yuan, Cupertino, CA (US);
Rongping Wang, Cupertino, CA (US);
Alan Tso, San Jose, CA (US);
Applied Materials, Inc., Santa Clara, CA (US);
Abstract
A method for fabricating a semiconductor layer within a plasma enhanced chemical vapor deposition (PECVD) apparatus. The PECVD apparatus includes a plurality of walls defining a processing region, a substrate support, a shadow frame, a gas distribution showerhead, a gas source in fluid communication with the gas distribution showerhead and the processing region, a radio frequency power source coupled to the gas distribution showerhead, and one or more VHF grounding straps electrically coupled to at least one of the plurality of walls. The VHF grounding straps provide a low-impedance current path between at least one of the plurality of walls and at least one of a shadow frame or the substrate support. The method further includes delivering a semiconductor precursor gas and a dopant precursor gas and delivering a very high frequency (VHF) power to generate a plasma to form a first layer on the one or more substrates.