Patent ID: 6158075
Filing Date: 2000-12-12
Classification: B08B,H01L,Y10S

Abstract:
A substrate washing apparatus, comprising:a spin chuck for holding and rotating a substrate;a brushing section including a scrubbing member which is brought into contact with a washing surface of said substrate held on said spin chuck and revolved on its own axis together with rotation of the spin chuck. said scrubbing member having a sponge through which a liquid can flow;a washing liquid supply mechanism having a liquid introducing port for supplying a washing liquid through said brushing section onto said washing surface of the substrate, said liquid introducing port communicating with the sponge of the scrubbing member;a pressure control mechanism for controlling a pressing force of said scrubbing member against the washing surface of the substrate; anda moving means for moving the scrubbing member relative to the substrate in a radial direction of the substrate,wherein the sponge includes:an abutting portion which is brought into contact with the washing surface of the substrate;a non-contact peripheral portion positioned about said abutting portion and formed not to contact the washing surface of the substrate when the abutting portion is in contact with the washing surface of the substrate. said non-contact peripheral portion and the abutting portion forming a curved surface, andwhereby the washing liquid supplied by the washing liquid supply mechanism flows from the liquid introducing port through the inner portion of the sponge to swell the sponge, and, then, flows out of the sponge surface,wherein said brushing section includes a holder for holding said scrubbing member and a shaft joined to said holder for revolving the scrubbing member on its own axis,wherein cleansing means, positioned apart from said spin chuck, are configured for washing the scrubbing member while the scrubbing member is in its waiting position,wherein said cleansing means includes a washing vessel receiving a washing liquid and a cleaner member abutting against the scrubbing member revolving on its own axis for cleansing the scrubbing member.