Invention Grant
US06857388B2 Cold wall chemical vapor deposition apparatus with a heater control unit 失效
具有加热器控制单元的冷壁化学气相沉积设备

Cold wall chemical vapor deposition apparatus with a heater control unit
Abstract:
A cold wall chemical vapor deposition apparatus includes: a chamber; a susceptor movable up and down in the chamber by a driving means, the susceptor including a heater and an internal electrode; a heat reflector over the susceptor, the heat reflector reflecting a heat emitted from the heater back to a wafer on the susceptor and serving as an correspondent electrode to the internal electrode; a heater control unit connected to the wafer, the heater and the driving means, the heater control unit sensing a temperature of the wafer, the susceptor moving according to the temperature; a gas supply unit supplying gases to the chamber; and a power source applying a voltage to the chamber.
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