Patent ID: 8210417

Claim:
A bonding apparatus for bonding substrates having metal bonding portions, the apparatus comprising: a processing container having an opening formed on the bottom of the processing container; a thermal treating plate disposed within the processing container, the thermal treating plate allowing for substrates to be mounted thereon and allowing for thermal treatment of the substrates; a pressing mechanism disposed within the processing container opposite the thermal treating plate and which presses the substrates to the thermal treating plate; an annular supporter disposed in an inner side of the processing container along the opening of the processing container, the annular supporter providing an airtight seal between the processing container and the thermal treating plate, and supporting the thermal treating plate; and a cooling mechanism disposed in an inner side of the supporter below the thermal treating plate, the cooling mechanism cooling the thermal treating plate, wherein the cooling mechanism includes a hollow cooling plate having a top disposed in parallel to the thermal treating plate, a communicating pipe which communicates with the inside of the cooling plate so as to feed air into the cooling plate, and an elevating mechanism which vertically moves the cooling plate, a plurality of through holes communicating with the inside of the cooling plate is formed in the bottom of the cooling plate, and the air fed from the communicating pipe into the cooling plate is discharged from the through holes of the cooling plate.