Method and apparatus for crystal growth control
US4239583A · kind A · utility
10Cited by
11References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1979 |
| Grant date | Dec 16, 1980 |
| Priority date | — |
| Expiry date | Jun 7, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T117/1008
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A system for and method of growing a crystalline body of a selected material is described, whereby the body grown is of a selected cross-sectional shape. The system and method are used in accordance with known capillary die techniques and further includes observing opposite edge portions of the growing body, preferably just above the meniscus (of melt material from which the body is being pulled). The cross-sectional size of the growing crystalline body can be controlled by determining when horizontal shifts occur in the edge portions relative to each other as well as the same predetermined reference position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.