Patent attributes
A substrate processing apparatus includes: a processing chamber including a processing room; a heating unit that heats the processing chamber; a support including a base thermally isolated from the processing chamber and fixed to the processing chamber, and a stage inserted into an opening provided toward the processing room while being supported by the base at a position distant from a reference position in a horizontal direction, and holds the substrate in the processing room; a stage peripheral member provided in the processing chamber along a periphery of the stage in a state of being inserted into the opening; and a first positioning pin fixed to the processing chamber to position the stage peripheral member, and a second positioning pin fixed to a position farther than the first positioning pin.