Apparatus and method for growing a crystal and heating an annular channel circumscribing the crystal
US7862656B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2007 |
| Grant date | Jan 4, 2011 |
| Priority date | — |
| Expiry date | Oct 8, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T117/1016
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An apparatus and method is provided for pulling a crystal seed from melt for growing a single crystal. The method includes the steps of providing a crucible and providing within the crucible an outer container, and providing coaxially within the outer container an inner container. A protruding portion of the inner container protrudes downward relative to the outer container for containing melt, the inner and outer containers defining an annular channel therebetween which has a bottom wall and contains introduced charge feed. The method further includes the steps of providing for allowing fluid communication between the annular channel and the inner container, delivering charge feed into the annular channel, and generating heat from within the annular channel for preventing the formation of a condensate of the charge feed within the annular channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.