Patent ID: 7718925

Claim:
A substrate heat treatment apparatus for heat-treating a substrate, comprising: a heat-treating plate; transfer pins mounted in perforations extending vertically through said heat-treating plate for contacting and supporting the substrate; support devices projecting from an upper surface of said heat-treating plate for contacting and supporting the substrate; a lift device for vertically moving said transfer pins between a transfer position above a projecting height of said support devices and a standby position level with or below the projecting height of said support devices; a first closing device disposed annularly on the upper surface of said heat-treating plate for closing lateral areas of a first space formed between the substrate supported by said support devices and said heat-treating plate; second closing devices disposed annularly on the upper surface of said heat-treating plate, around openings of said perforations, and in positions inward of said first closing device, for closing lateral areas of second spaces formed between the substrate supported by said support devices and said heat-treating plate, said second spaces being opposed to said perforations; and exhaust bores for exhausting gas from said first space excluding said second spaces.