Crystal pulling apparatus

Details Crystal pulling apparatus Crystal pulling apparatus

1996-12-05

1998-11-10

Garrett, Felisa

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

Apparatus

For crystallization from liquid or supercritical state

117200, 117911, G30B 3500

Patent

active

058337504

ABSTRACT:
A crystal pulling apparatus is disclosed in which a single crystal ingot is pulled from a melt of a crystalline material by using a cable. A crimp portion and a spherical portion supported by the crimp portion are provided in the vicinity of the tip of the cable. Two divided couplings are screwed into a chuck body of a seed chuck. The couplings have an accommodation space therein so as to accommodate the cable and the spherical portion, and conical hole sections serving as the shoulder portion of the accommodation space contact and hold the spherical portion. This structure allows the cable to rotate during crystal pulling operation and facilitates attachment of the seed chuck to the cable and removal of the seed chuck from the cable.

REFERENCES:
patent: 3159408 (1964-12-01), Sanchez et al.
patent: 3191924 (1965-06-01), Haus
patent: 3206286 (1965-09-01), Bennett, Jr. et al.
patent: 4284605 (1981-08-01), Pierrat
patent: 4738832 (1988-04-01), Drechsel

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