Patent ID: 9199285
Filing Date: 2015-12-01
Classification: B08B,H01L

Abstract:
1. A method of cleaning a substrate, the method comprising: loading the substrate onto a carrying unit; forming a silicon layer and a silicon oxide film on the substrate; moving the substrate under a first rinse unit with the carrying unit and applying a first cleaning liquid to the substrate using the first rinse unit; moving the substrate under a cleaning unit with the carrying unit, the cleaning unit comprising an air knife and a slit nozzle attached to a fixing frame, wherein the cleaning unit simultaneously removes the first cleaning liquid using the air knife and simultaneously applies a second cleaning liquid to the substrate to etch the silicon oxide film using the slit nozzle, wherein during the applying of the second cleaning liquid to the substrate, a gap between the slit nozzle and an upper surface of the substrate is between 1.5 mm and 5 mm, such that the second cleaning liquid on the substrate has a uniform thickness, and wherein the substrate is stopped under the cleaning unit during a reaction time period; and performing a reaction process of the second cleaning liquid while sustaining the substrate to which the second cleaning liquid is applied in a horizontal state.