Device for manufacturing a crystalline material from a crucible having non-uniform heat resistance
US9945046B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2012 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | May 5, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T117/1092
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The device forming a crucible for fabrication of crystalline material by directional solidification comprises a bottom and at least one side wall. The bottom presents a first portion having a first thermal resistance and a second portion having a second thermal resistance that is lower than the first thermal resistance. The second portion is designed to receive a seed for fabrication of the crystalline material. The bottom and side wall are at least partially formed by a tightly sealed part including at least one indentation participating in defining said first and second portions. The first portion is covered by a first anti-adherent layer having an additional first thermal resistance. The second portion may be covered by a second anti-adherent layer having an additional second thermal resistance that is lower than the first thermal resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.