Patent ID: 7648581
Filing Date: 2010-01-19
Classification: B08B,H01L,Y10S

Abstract:
1. A substrate cleaning method for cleaning a backside of a substrate on a front surface of which a predetermined processing is performed, the method comprising: contacting a two phase substance to the backside of the substrate; and generating a flow of the substance near the backside of the substrate under a specified pressure, wherein the method further to facilitate removal of particles from the backside of the surface comprises: generating ultrasonic vibrations and transmitting the ultrasonic vibrations to the substrate, applying DC voltages to the substrate to generate electromagnetic stress acting on the backside of the substrate, and irradiating heat rays on the front surface of the substrate to generate a thermophoretic force, wherein all of said generating the ultrasonic vibrations, said applying the DC voltages and said irradiating the heat rays are carried out concurrently with said contacting.