Patent ID: 8607807
Filing Date: 2013-12-17
Classification: H01L

Abstract:
1. A liquid treatment apparatus comprising: a substrate retaining unit comprising a retaining member configured to hold a peripheral edge of a substrate to retain the substrate horizontally; a rotational driving unit configured to rotate the substrate retaining unit; and a nozzle comprising a first ejection port provided to eject a chemical liquid toward a lower surface of the substrate retained by the substrate retaining unit, a plurality of second ejection ports provided to eject a mist containing isopropyl alcohol, IPA, and N wherein the plurality of second ejection ports are arrayed between a position opposing to a central portion of the substrate and a position opposing to a peripheral portion of the substrate retained by the substrate retaining unit, wherein the nozzle has a central portion located below a central portion of the substrate retained by the substrate retaining unit, and a bar-shaped portion extending from the central portion of the nozzle in a radial direction of the substrate retained by the substrate retaining unit, wherein the plurality of second ejection ports are disposed in the bar-shaped portion so as to be arrayed in a longitudinal direction of the bar-shaped portion of the nozzle, wherein an IPA passageway and an N wherein IPA ejecting passages are connected to the IPA passageway, and N wherein at locations near each of the second ejection ports respective IPA ejecting passages and respective N