Use of quartz plates during growth of single crystal silicon ingots
US-12146236-B2 · Nov 19, 2024 · US
Single crystal production apparatus
US9938636B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9938636-B2 |
| Application number | US-201615001830-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 20, 2016 |
| Priority date | Jan 20, 2015 |
| Publication date | Apr 10, 2018 |
| Grant date | Apr 10, 2018 |
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- Title
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Abstract
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A single crystal production apparatus wherein the chamber has a top plate part, a bottom plate part and a barrel part, the barrel part is in a hollow cylindrical shape and made of quartz glass and connects the top plate part with the bottom plate part, an openable/closable reflective member is provided on the outer circumference of the barrel part, and the reflective member is divided in the circumferential direction and reflects heat and light radiated from the inside of the chamber.
First claim
Opening claim text (preview).
The invention claimed is: 1. A single crystal production apparatus, comprising a chamber housing a crucible and an induction heating coil, wherein said chamber has a top plate part, a bottom plate part, and a barrel part, said barrel part has a hollow cylindrical shape and is made of quartz glass, and connects said top plate part with said bottom plate part, an openable/closable reflective member is provided around an outer circumference of said barrel part, said reflective member is divided into a plurality of parts in a circumferential direction and reflects heat and light radiated from the inside of said chamber, and each one of the plurality of parts of the reflective member is comprised of a plurality of electromagnetic steel sheets stacked in a radial direction from an outer circumference toward an inner circumference. 2. The single crystal production apparatus of claim 1 , wherein the inner circumference side of the plurality of stacked electromagnetic steel sheets is subjected to bright plating or mirror polishing.
Assignees
Inventors
Classifications
- C30B15/14Primary
Heating of the melt or the crystallised materials · CPC title
Stirring of the melt · CPC title
Heating of the reaction chamber · CPC title
Apparatus not otherwise provided for, specially adapted for the growth, production or after-treatment of single crystals or of a homogeneous polycrystalline material with defined structure · CPC title
Carbides · CPC title
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- What does patent US9938636B2 cover?
- A single crystal production apparatus wherein the chamber has a top plate part, a bottom plate part and a barrel part, the barrel part is in a hollow cylindrical shape and made of quartz glass and connects the top plate part with the bottom plate part, an openable/closable reflective member is provided on the outer circumference of the barrel part, and the reflective member is divided in the ci…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C30B15/14. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 10 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).