Patent ID: 6106687
Filing Date: 2000-08-22
Classification: C25D,H01L

Abstract:
In a method of treating a planar substrate wherein said treatment is effected by causing a material to flow toward said substrate from a location spaced therefrom, the improvement comprising:interposing between said location and said substrate a baffle for modifying the uniformity of material flow in a plane parallel to said substrate, said baffle including at least two planar members disposed parallel to said substrate, each of said planar members having at least one opening therethrough, at least one of said planar members being independently movable within its respective plane, said movement and the disposition of said openings causing at least one such opening on one of said members to move selectively into and out of registry with an opening on the other of said members;adjusting said movable baffle plate to a predetermined position of registration between said openings, wherein the registration of openings on one of said plates with openings on the other of said plates is controllably varied with the radial position thereof; andcausing material to flow from said location toward said substrate and through said baffle, said baffle causing a redistribution of the flow rate of said material toward said substrate in the plane of said baffle and thereby effecting the uniformity of treatment thereof.