Patent ID: 8015985

Claim:
A substrate processing apparatus that subjects a substrate to predetermined processing, comprising: a rotation-driving device having a hollow rotating shaft extending in the vertical direction; a rotating member attached to the rotating shaft so as to rotate together with the rotating shaft and having an opening at its center; a plurality of holding members that are provided in the rotating member and hold an outer edge of the substrate; and a fluid supplying mechanism that supplies a first fluid and a second fluid to one surface of the substrate held by the plurality of holding members, wherein the fluid supplying mechanism comprises an outer pipe made of metal that is inserted through the rotating shaft of the rotation-driving device and the opening of the rotating member and is supported on the rotation-driving device such that a predetermined gap is formed between the outer pipe and an inner peripheral surface of the rotating shaft, a first inner pipe made of resin, which is inserted into the center of the inside of the outer pipe and has a discharge port at its end opposed to the one surface of the substrate, for supplying the first fluid to the substrate from the discharge port, and a plurality of second inner pipes made of resin, which are inserted into a portion of the outer pipe around the first inner pipe in contact with an outer peripheral surface of the first inner pipe and an inner peripheral surface of the outer pipe and the first inner pipe and the second inner pipe respectively have discharge ports at their ends opposed to the one surface of the substrate for supplying the second fluid to the substrate from the discharge ports.