Patent ID: 6117234
Filing Date: 2000-09-12
Classification: C30B,Y10S,Y10T

Abstract:
A single crystal growing apparatus, comprising:a lower chamber having a quartz crucible arranged in it;an upper chamber rotatably disposed above said lower chamber;a seed crystal lift mechanism rotatably disposed above said upper chamber with respect to said lower chamber and for moving the seed crystal up or down; anda single crystal gripping mechanism arranged in such manner that it can be moved in vertical direction in said upper chamber, whereby:said seed crystal lift mechanism forms a neck portion of the single crystal under the seed crystal by immersing the seed crystal in a melt in said quartz crucible and by pulling it and is used to form a constricted portion of the single crystal under said neck portion, and said single crystal gripping mechanism is used to pull the single crystal by gripping said constricted portion from below and by moving up after the constricted portion of said single crystal has been formed.