Patent ID: 9687887
Date: 2017-06-27
CPC Classifications: B08B,H01L

Claim:
1. A substrate processing apparatus comprising: a substrate holding unit that holds a substrate horizontally; a substrate rotating unit that rotates the substrate held by the substrate holding unit about a vertical rotation axis passing through the substrate; an upward discharging member that is disposed under a position where the substrate is held by the substrate holding unit that includes a plurality of discharge ports respectively disposed at a plurality of positions different in distance from the rotation axis, and a flow passage connected sequentially to the plurality of discharge ports in order from outside to inside in a flow-through direction, and that discharges a processing liquid supplied from the flow passage in the flow-through direction to the plurality of discharge ports from the plurality of discharge ports toward the substrate; and a first processing liquid pipe that supplies a processing liquid of a temperature higher than that of the upward discharging member to the flow passage; wherein the upward discharging member further includes a disk-shaped discharging portion opposed in parallel to the substrate held by the substrate holding unit and provided with the plurality of discharge ports; the flow passage includes a first flow passage provided in the discharging portion and disposed on a plane; the first flow passage includes an upstream portion that is disposed in an upstream direction from an outermost discharge port among the plurality of discharge ports and the upstream portion extends from the rotation axis to an outer peripheral portion of the upward discharging member in the flowthrough direction, and a downstream portion connected to the upstream portion and disposed in a same plane as that of the upstream portion and extending in the flow-through direction to be closer to the rotation axis than the outermost discharge port; and the plurality of discharge ports include two discharge ports disposed at different respective rotation radiuses from the rotation axis and adjacent in the flow-through direction.