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US 11,441,235 B2Granted
Crystal growing apparatus and crucible having a main body portion and a low radiation portion
AssigneeShowa Denko K.K.
InventorsRimpei Kindaichi, Yoshishige Okuno, Tomohiro Shonai
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Abstract
A crystal growing apparatus includes: a crucible including a main body portion and a low radiation portion having a radiation rate lower than that of the main body portion; and a heating unit which is positioned on the outside of the crucible and is configured to heat the crucible by radiant heat, and the low radiation portion is provided on an outer surface of a first point which is a heating center, in a case where the crucible does not include the low radiation portion.
Claims17
A crystal growing apparatus comprising:
- a crucible including a main body portion, a low radiation portion having a radiation rate lower than that of the main body portion, a crystal installation portion on which a seed crystal is installed, and a bottom portion which is filled with a raw material;
- and
- a heating unit which is positioned on the outside of the crucible and is configured to heat the crucible by radiant heat,
- wherein the low radiation portion is provided on an outer surface of a first point which is a heating center of the crucible, in a case where the crucible does not include the low radiation portion,
- the crystal installation portion is disposed on a position facing the raw material, and
- a height of the low radiation portion is 2 times or more and 4 times or less than a distance of a perpendicular line drawn towards the heating unit from the first point.
3 more elements
A crystal growing apparatus comprising:
- a crucible including a main body portion, a low radiation portion having a radiation rate lower than that of the main body portion, a crystal installation portion on which a seed crystal is installed, and a bottom portion which is filled with a raw material;
- and
- a heating unit which is positioned on the outside of the crucible and is configured to heat the crucible by radiant heat,
- wherein the low radiation portion is provided on an outer surface of a first point which is a heating center of the crucible, in a case where the crucible does not include the low radiation portion,
- the crystal installation portion is disposed on a position facing the raw material, and
- a height of the low radiation portion is 40% or more and 80% or less of a height of the raw material contained in the crucible.
3 more elements
Dependencies are inferred from the claim text.