Patent ID: 8372210
Filing Date: 2013-02-12
Classification: B08B,H01L

Abstract:
1. A method of cleaning a substrate comprising: scrubbing a first surface of the substrate with a brush having a first surface geometry, wherein the first surface geometry is smooth relative to a brush having a second surface geometry and adapted to dislodge particles resistant to mechanical cleaning action; and then after the first surface of the substrate is scrubbed with the brush having the first surface geometry, scrubbing the first surface of the substrate with the brush having the second surface geometry, wherein the second surface geometry is profiled and adapted to dislodge particles resistant to chemical cleaning action, and wherein the first and the second surface geometries are different; and applying a first concentration of a first cleaning fluid to the substrate while scrubbing the substrate with the brush having the first smooth surface geometry and applying a second concentration of the first cleaning fluid to the substrate while scrubbing the substrate with the brush having the second profiled surface geometry; wherein the first concentration of the first cleaning fluid is a higher concentration than the second concentration of the first cleaning fluid.