SINGLE CRYSTAL GROWTH DEVICE

摘要

PURPOSE: An apparatus for growing a single crystal sapphire ingot is provided to grow an ingot at a stable temperature gradient by including a cooling member in a crucible and a chamber. CONSTITUTION: A cooling member(105) comprises an inner chamber(112) and an outer chamber(113). The inner chamber is installed near a crucible. The outer chamber is integrated with the outside of the inner chamber. Cooling water reversely circulates in the inner chamber and the outer chamber to reduce temperature difference between the upper side and the lower side of the crucible.