Title:
DEVICE AND METHOD FOR GROWING CRYSTAL
Document Type and Number:
WIPO Patent Application WO/1992/018672
Kind Code:
A1
Abstract:
A device and method for growing a crystal which provide a new technique in picking up a crystal to enable control over temperature distribution of a liquid of the melt in the radial direction of the crucible wherein; when a seed crystal is immersed into a material filled in the crucible and melted by a heater as external heating means surrounding said crucible and grown into a crystal while being gradually picked up, a temperature control plate is disposed in a zone above the liquid and around a crystal to be picked up so that, during picking-up of the crystal, a degree of temperature distribution on the liquid may be constantly kept lowest at the solid-liquid interface below the crystal and, at the same time, gradually higher toward the inner wall of the crucible.
Inventors:
AKIYAMA NOBUYUKI (JP)
Application Number:
PCT/JP1991/001450
Publication Date:
October 29, 1992
Filing Date:
October 23, 1991
Export Citation:
Assignee:
KOMATSU DENSHI KINZOKU KK (JP)
International Classes:
C30B15/00; C30B15/14; C30B15/20; (IPC1-7): C30B15/00; C30B15/20
Foreign References:
| JPS6168389A | 1986-04-08 | |||
| JPS6350391A | 1988-03-03 | |||
| JPH0297478A | 1990-04-10 |
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