| 主权项 |
1. A crystal growth device comprising:
a crucible having a bottom and a top opening; and a heater setting surrounding said crucible and movable relative to said crucible along a top-bottom direction of said crucible and between first and second positions, said heater setting including a first temperature heating zone and a second temperature heating zone higher in temperature than said first temperature heating zone, said heater setting being in said first position when said crucible is in said second temperature heating zone and in said second position when said crucible is in said first temperature heating zone, wherein said heater setting further includes a heating member surrounding said crucible to heat said crucible, and a heat insulation member completely disposed inside said heating member and around said crucible and covering an inner surface of a lower part of said heating member, said heating member being higher than said heat insulation member and having an upper part that is uncovered by said heat insulation member, said heat insulation member being unmovable relative to said lower part of said heating member, said heat insulation member is in direct contact with said inner surface of said lower part of said heating member, said upper part of said heating member surrounding said second temperature heating zone, said lower part of said heating member and said heat insulation member surrounding said first temperature heating zone. |
