Title:
AUTOMATIC ZONE MELTING CRYSTAL GROWTH METHOD AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/070827
Kind Code:
A1
Abstract:
The present invention discloses an automatic zone melting crystal growth method and system. The method comprises the following steps: during an automatic diameter increasing stage, if a diameter of a single crystal is greater than a lower base surface diameter of a certain layer of truncated cone-shaped growth region and less than an upper base surface diameter thereof, then determining a growth region of the single crystal to be said layer of truncated cone-shaped growth region, and growing the single crystal in the growth region having a pre-configured growth parameter, wherein the growth parameter at least comprises a polycrystal dropping rate and a heating power; performing, according to a pre-configured function relationship, adjustment to grow the single crystal according to a pre-configured growth angle for the growth region of the single crystal, wherein the growth angle is defined as an included angle between a cone generatrix and a lower base bottom surface; and if the diameter of the single crystal reaches a target value, then switching to an automatic constant diameter growth stage, wherein the current growth region of the single crystal is in a topmost layer of growth region, and the single crystal grows along an axial direction in said growth region. A single crystal grown using the present invention has a predictable shape.
Inventors:
LIU HESONG (CN)
CHEN HUI (CN)
ZHANG LIJIE (CN)
WU YUESHUANG (CN)
SHANG RUIGANG (CN)
ZHOU BING (CN)
YANG KAI (CN)
GAO HUI (CN)
CHEN HUI (CN)
ZHANG LIJIE (CN)
WU YUESHUANG (CN)
SHANG RUIGANG (CN)
ZHOU BING (CN)
YANG KAI (CN)
GAO HUI (CN)
Application Number:
PCT/CN2015/092868
Publication Date:
May 04, 2017
Filing Date:
October 26, 2015
Export Citation:
Assignee:
JINGYUNTONG TECH CO LTD (CN)
BEIJING TIAN NENG YUN TONG CRYSTAL TECHNIQUE CO LTD (CN)
BEIJING TIAN NENG YUN TONG CRYSTAL TECHNIQUE CO LTD (CN)
International Classes:
C30B13/30; C30B29/06
Foreign References:
| CN202175736U | 2012-03-28 | |||
| CN103194791A | 2013-07-10 | |||
| CN103422156A | 2013-12-04 | |||
| CN103866376A | 2014-06-18 | |||
| CN103451718A | 2013-12-18 | |||
| CN103436951A | 2013-12-11 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
Download PDF:
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