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:
Jul. 18, 2017
Filed:
Apr. 11, 2015
Globalwafers Co., Ltd., Hsinchu, TW;
Lu-Chung Chuang, Hsinchu, TW;
Chih-Chieh Yu, Hsinchu, TW;
Wen-Chieh Lan, Hsinchu, TW;
Jiunn-Yih Chyan, Hsinchu, TW;
I-Ching Li, Hsinchu, TW;
Wen-Ching Hsu, Hsinchu, TW;
GLOBALWAFERS CO., LTD., Hsinchu Science Park, TW;
Abstract
A stirring apparatus of an ingot casting furnace includes a rotating shaft and at least one fin. The fin is provided onto the rotating shaft, and has a first edge, a second edge of unequal length provided correspondingly, and a third edge connecting the first and the second edges. The rotating shaft can be driven to rotate, which consequently drives the at least one fin to stir materials in a crucible. The length of the first edge is different from that of the second edge in order for the materials in the crucible can be mixed with dopants more uniformly during the stirring process to produce ingots of stable quality.