Patent ID: 8128751

Claim:
A film-forming apparatus comprising: a processing container that defines a chamber, a stage arranged in the chamber, on which a substrate to be processed can be placed, a showerhead provided opposite to the stage, which has a large number of gas-discharging holes, a gas-supplying mechanism that supplies a process gas into the chamber through the showerhead, and a showerhead-temperature controlling unit that controls a temperature of the showerhead, wherein the showerhead-temperature controlling unit is provided in an atmosphere-side part, the showerhead-temperature controlling unit includes a heating mechanism that heats the showerhead, an annular infilling member is arranged between the showerhead and the processing container, the annular infilling member is provided so as to substantially infill a space surrounded by a side wall of the showerhead and a side wall of the processing container, the annular infilling member is made of quartz and has a concave portion in an outer circumferential surface thereof, an annular lid member is fixed to an upper end of the processing container, a fixing member is fixed to the annular lid member by means of screws, and the fixing member has a convex portion which is fitted in the concave portion of the annular infilling member via an annular elastic member or a plurality of elastic members.