Patent ID: 9387520
Filing Date: 2016-07-12
CPC Classification: B08B,H01L

Claim Text:
1. A liquid processing apparatus comprising: a substrate holding unit configured to hold a substrate horizontally; a substrate rotating mechanism configured to rotate the substrate holding unit; a processing liquid supply unit configured to supply a processing liquid to the substrate held by the substrate holding unit; a guide cup provided to surround the substrate holding unit; a drain section configured to recover the processing liquid supplied to the substrate; an exhaust section provided in vicinity of the drain section and configured to exhaust the surrounding atmosphere of the substrate held by the substrate holding unit; an exhaust route forming member provided between a first area configured to process the substrate held by the substrate holding unit with the processing liquid and a second area in which the drain section and the exhaust section are provided, a gap being provided between the exhaust route forming member and the guide cup, and an exhaust route reaching the exhaust section being formed by the guide cup and the exhaust route forming member; a first cleaning unit configured to supply a cleaning liquid to the exhaust route forming member at a second area side; and a second cleaning unit configured to supply the cleaning liquid to the exhaust route forming member at a first area side, wherein the exhaust route forming member is formed with a recess at the first area side and provided with a through hole at a bottom surface of the recess, the second cleaning unit supplies the cleaning liquid to a top surface side of the exhaust route forming member and to a portion of the substrate holding unit that faces the exhaust route forming member, and the cleaning liquid supplied toward the substrate holding unit is sent to the drain section via the through hole of the exhaust route forming member.