Patent ID: 7964477

Claim:
A III-nitride crystal manufacturing method provided with: a step of slicing a plurality of crystal plates from a first III-nitride crystal and conditioning the plurality of crystal plates to a deviation in crystallographic plane orientation in any given point on the major face of each crystal plate, with respect to an {hkil} plane being a crystallographic plane chosen exclusive of the { 0001 } form, of not greater than 0.5°; a step of arranging the plurality of crystal plates in a manner such that the plane-orientation deviation, with respect to the {hkil} plane, in any given point on the major-face collective surface of the plurality of crystal plates is not greater than 0.5°, and such that at least a portion of the major face of each crystal plate is exposed; and a step of growing second III-nitride crystal onto the exposed areas of the major faces of the plurality of crystal plates in such a way as to incorporate and unify first crystal regions that grow onto the exposed areas of the major faces of each crystal plate, and second crystal regions that are regions where the first crystal regions merge with each other.