Patent ID: 6242044
Filing Date: 2001-06-05
Classification: B05C,G03F,Y10T

Abstract:
A method of distributing a chemical over the surface of a substrate, comprising:placing the substrate on a support chuck such that the substrate is in physical contact with the support chuck at a protruded ring, wherein the substrate includes the protruded ring near an inner radius of its under surface and the protruded ring of the substrate is configured to mate with complementary supporting rings on a chuck plate of the support chuck;coupling the support chuck to a temperature controlled plate that includes a network of cooling coils;depositing the chemical on a portion of the surface of a substrate near the center of the substrate; andcontrolling the temperature of the surface of the substrate at the protruded ring so that the viscosity of the chemical is calibrated to cause the chemical to be deposited on the surface of the substrate in a substantially uniform manner while the substrate is spinning.