Patent ID: 8307778
Filing Date: 2012-11-13
Classification: H01L

Abstract:
1. A coating unit comprising: a stage having a first flotation area provided with many jet openings for jetting a gas and many suction openings for sucking the gas in an intermixed arrangement; substrate carrying mechanisms capable of moving a substrate floating above the stage in a predetermined carrying direction past the first flotation area; a process liquid supply unit including a nozzle disposed above the first flotation area and capable of making the nozzle discharge process liquid onto the substrate; and slots formed in the first flotation area in an upper surface of the stage so as to extend in a first direction parallel to or inclined at an acute angle to the carrying direction from upper ends of the jet openings or the suction openings, wherein both slots extending in the carrying direction from the upper ends of the jet or the suction openings and slots extending in a direction opposite the carrying direction from the upper ends of the jet or the suction openings are formed.