Apparatus for pulling up crystal bodies

Details Apparatus for pulling up crystal bodies Apparatus for pulling up crystal bodies

1998-03-27

1999-08-17

Hitesheu, Felisa

Single-crystal, oriented-crystal, and epitaxy growth processes;

Apparatus

For crystallization from liquid or supercritical state

117911, C30B 3500

Patent

active

059388439

ABSTRACT:
This invention provides a apparatus for pulling up crystal bodies, which is capable of firmly clamping and safely pulling up large-diameter crystal bodies regardless of the location of the necked portions formed on the top of the crystal bodies. A large-diameter portion 52 and a necked portion 51 are formed on the top of the crystal body 5. The swaying members 12 of the necked-portion clamp 1 are capable of swaying upward and downward without restraint. The stopper 14 restrains the swaying members 12 to sway below the horizontal plane on which the swaying members 12a are located. The large-diameter portion 52 can pass through the clamp body 11 by lowering the necked-portion clamp 1 to sway the swaying members 12 upward. The swaying members 12 close to clamp the necked portion 51 when the necked-portion clamp 1 reaches a location near the necked portion 51. The distance between the necked-portion clamp 1 and the seed-crystal 3 is adjustable.

REFERENCES:
patent: 5126113 (1992-06-01), Yamagishi et al.
patent: 5173270 (1992-12-01), Riday et al.
patent: 5725660 (1998-03-01), Hiraishi

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