Invention Grant
- Patent Title: Crystal pulling apparatus and method for the production of heavy crystals
- Patent Title (中): 水晶拉制装置及重晶体生产方法
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Application No.: US12420857Application Date: 2009-04-09
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Publication No.: US08691009B2Publication Date: 2014-04-08
- Inventor: Burkhard Altekrüger , Stefan Henkel , Axel Vonhoff , Erich Tomzig , Dieter Knerer
- Applicant: Burkhard Altekrüger , Stefan Henkel , Axel Vonhoff , Erich Tomzig , Dieter Knerer
- Applicant Address: DE
- Assignee: Siltronic AG
- Current Assignee: Siltronic AG
- Current Assignee Address: DE
- Agency: Fulbright & Jaworski LLP
- Priority: DE102006034433 20060726
- Main IPC: C30B15/32
- IPC: C30B15/32

Abstract:
A pulling apparatus and a method with which especially heavy crystals (5) can be pulled using the Czochralski method utilizing the pulling apparatus. For this purpose the neck (4) of the crystal (5) has an enlargement (10) beneath which extends the support device. This device includes latches (7), which are moved from a resting position into an operating position in which the latches (7) extend beneath the enlargement (10). Each latch (7) is supported on the base body such that it is swivellable about a pivot axis (8) and can assume two stable positions, namely the resting position and the operating position. Each of these positions is defined by a stop on the base body. When the latch rests on the one stop, its center of gravity, viewed from the neck (4), is located on the other side of the pivot axis (8). When the latch rests on the other stop, the center of gravity is located on this side of the pivot axis (8). The actuation of the latches (7) takes place with actuation means disposed stationarily in the apparatus.
Public/Granted literature
- US20090188425A1 CRYSTAL PULLING APPARATUS AND METHOD FOR THE PRODUCTION OF HEAVY CRYSTALS Public/Granted day:2009-07-30
Information query
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