Conical portion growth control method and apparatus

Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

156600, 1566171, 1566181, 1566191, 1566204, 422249, C30B 1528

Patent

active

052230783

ABSTRACT:
A conical portion growth control method and an apparatus used in the method grow a conical portion 32B of a single crystal rod 32 by pulling the crystal rod from a melt 16 heated by a heater 14 in the Czochralski method, and aim to enhance reproducibility of the shape of the conical portion 32B and shorten the conical portion 32B. The control method has the steps of presetting a target value pattern 66 of the temperature of a concave portion 46 formed on a heat-insulating material 18 and a target value pattern 64 of the diameter change rate of a growing portion of the crystal rod, measuring the diameter of the crystal growing portion, calculating the change rate of the diameter, measuring the temperature of the concave portion, correcting the target temperature based on a difference between the calculated value and the target value of the diameter change rate, and controlling the amount of electricity supplied to the heater so that the measured temperature becomes equal to the corrected target temperature.

REFERENCES:
patent: 3761692 (1973-09-01), Cope
patent: 3958129 (1976-05-01), Clement et al.
patent: 4008387 (1977-02-01), Green et al.
patent: 4258003 (1981-03-01), Hurle et al.
patent: 4710258 (1987-12-01), Latka
patent: 4794263 (1988-12-01), Katsuoka et al.
patent: 4926357 (1990-05-01), Katsuoka et al.
patent: 5089238 (1992-02-01), Araki et al.
patent: 5096677 (1992-03-01), Katsuoka et al.
IBM Technical Disclosure Bulletin, vol. 19, No. 3, Aug. 1976, pp. 869-870, N.Y.
Patent Abstracts of Japan, vol. 10, No. 23, Jan. 29, 1986.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Conical portion growth control method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Conical portion growth control method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conical portion growth control method and apparatus will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1752503

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.