Patent ID: 9051663
Filing Date: 2015-06-09
Classification: C30B,H01L

Abstract:
1. A manufacturing method of a SiC single crystal comprising: a first growth process in which a first seed crystal made of SiC is used to grow a first SiC single crystal; and a re-growth process in which a plurality of growth steps are performed for (n−1) times, in a k-th growth step, a k-th seed crystal is cut out from a grown (k−1)-th SiC single crystal, and the k-th seed crystal is used to grow a k-th SiC single crystal, wherein the n is natural number and is equal to or larger than 2, and the k is natural number and is in a range between 2 and n, wherein an offset angle of a growth surface of the first seed crystal is defined as θ wherein an offset angle of a growth surface of the k-th seed crystal is defined as θ wherein the offset angle θ wherein each of the first to n-th seed crystals has a threading screw dislocation generation region formed on an uppermost portion of an upstream side in an offset direction.