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:
Aug. 22, 2017
Filed:
May. 28, 2014
Shin-etsu Handotai Co., Ltd., Tokyo, JP;
Masanori Takazawa, Nishigo-mura, JP;
SHIN-ETSU HANDOTAI CO., LTD., Tokyo, JP;
Abstract
A single-crystal manufacturing apparatus including: main chamber accommodating crucible and heater; pull chamber wherein a grown single-crystal is received; gas-flow guiding cylinder that has opening through which the single-crystal passes and extends downward from ceiling of main chamber; seed chuck configured to hold a seed crystal; and heat insulation plate that is level with lower end of the opening of gas-flow guiding cylinder when raw material is heated and melted, and pulled together with the seed crystal when single-crystal is pulled. The seed chuck includes a mounting fixture to mount heat insulation plate. Mounting fixture has a mechanism allowing heat insulation plate to be mounted so the heat insulation plate can be rotated independently of the rotation of the seed chuck. This apparatus can be readily introduced, melt raw material with low heater power; inhibit occurrence of dislocation during seeding and generation of dislocation in single-crystal when single-crystal is pulled.