Patent ID: 9598792
Date: 2017-03-21
CPC Classifications: C30B

Claim:
1. A film-forming apparatus comprising: a film-forming chamber; a cylindrical shaped liner provided between an inner wall of the film-forming chamber and a space for performing a film-forming process; a main-heater configured to heat a substrate placed inside the liner, from the bottom side; a sub-heater cluster provided between the liner and the inner wall, apart from the innter wall and above an outer periphery of the suspector, the sub-heater cluster being configured to heat the substrate from the top side; wherein the main-heater and the sub-heater cluster are resistive heaters; wherein the sub-heater cluster has a first sub-heater provided at the closest position to the substrate, and a second sub-heater provided above the first sub-heater; wherein the first sub-heater heats the substrate in combination with the main-heater, the second sub-heater heats the liner at a lower output than the first sub-heater; wherein each temperature of the main-heater, the first sub-heater, and the second sub-heater is individually controlled.