Ingot raw material supply system
US9834857B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 16, 2013 |
| Grant date | Dec 5, 2017 |
| Priority date | — |
| Expiry date | Jul 7, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B29/06
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A raw material supply system for supplying a fixed amount of raw material necessary for ingot growth is disclosed. The system includes a support unit, an enclosure, a fixed amount supply unit, a hopper for supplying raw material to the fixed amount supply unit, a dopant supply unit for supplying a predetermined amount of dopant into the enclosure, a supply pipe for supplying a fixed amount of raw material and dopant to a crucible, a lifting mechanism for moving the supply pipe upward and downward, a moving mechanism for protruding an inclined chute to an upper part of the supply pipe, and a load cell mounted between the support unit and the enclosure for sensing the weight of the supplied raw material and inputting the sensed weight of the raw material to a controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.