Patent ID: 7311772
Filing Date: 2007-12-25
Classification: C30B,Y10T

Abstract:
1. An apparatus for supplying a raw material for use in growing a single crystal by the CZ method, which is applied for an additional charging or recharging the solid raw material in granular form into a molten raw material in the crucible, the apparatus comprising: a raw material supply tube in cylindrical form to be fllled with said solid raw material; a releasable conical bottom lid disposed at the lower end aperture of said raw material supply tube; a metallic support member which is covered with a sheath tube, runs through the inside space of said raw material supply tube to be connected with said bottom lid at the end, which enabling said bottom lid to descend and enabling said raw material supply tube as well as said bottom lid to ascend; an engaging-component to make the descending movement of said raw material supply tube to come to a halt; and a pulling means which enables said raw material supply tube and bottom lid to ascend/descend in suspension by means of said metallic support member, wherein the lower end aperture of said raw material supply tube can be released to open and said solid raw material can be supplied into the molten raw material in the crucible.