公开(公告)号：US10060046B2

公开(公告)日：2018-08-28

申请号：US14857880

申请日：2015-09-18

Applicant: Corner Star Limited

Inventor： Steven Lawrence Kimbel ,  Benjamin Michael Meyer ,  Salvador Zepeda ,  Steven John Ferguson

IPC: C30B15/10 ,  C30B15/00 ,  C30B15/02

CPC classification number: C30B15/10 ,  C30B15/002 ,  C30B15/02 ,  Y10T117/10 ,  Y10T117/1032 ,  Y10T117/106 ,  Y10T117/1068

Abstract: A crystal puller for growing a crystal ingot includes a housing, insulation, a crucible assembly, a heat shield, and a dust barrier. The housing encloses a growth chamber, and has an upper wall with an inner surface and an aperture. The insulation separates an inside of the housing into an upper area and a lower area, and has a central opening. The crucible assembly is within the lower area to contain the melt. The heat shield is adjacent the central opening of the insulation, and forms a labyrinth gas path with the crucible assembly. The dust barrier extends from the inner surface of the upper wall to one of the insulation and the heat shield, and forms a seal with the upper wall around the aperture to inhibit particles from entering the growth chamber through the upper area of the housing.