Patent ID: 8876976

Claim:
A chemical vapor deposition apparatus for equalizing a heating temperature, the chemical vapor deposition apparatus comprising: a heater heating a wafer disposed thereon by heat generated from the heater, the heater having an upper surface being substantially flat and facing the wafer and an under surface being a reverse side of the upper surface and exposed to an inner space of a chamber, the heater having a low temperature area (L) and a first high temperature area (A), the under surface of the heater being substantially flat and having a first area (A′) positioned vertically below the first high temperature area (A) and a second area (L′) positioned vertically below the low temperature area (L) thereon; and a heat dissipation member disposed on the under surface of the heater, the heat dissipation member having an upper surface directly contacted with the first area (A′) of the under surface of the heater to dissipate the heat of the first high temperature area (A) of the heater, the heat dissipation member having an under surface exposed to the inner space of the chamber and not contacted with the chamber, the under surface of the heat dissipation member being a reverse side of the upper surface of the heat dissipation member, the entire area (S) of the upper surface of the heat dissipation member being less than the second area (L′) of the under surface of the heater, and the second area (L′) of the under surface of the heater being exposed to the inner space of the chamber.