Patent ID: 8491752
Filing Date: 2013-07-23
Classification: B32B,H01L,Y10T

Abstract:
1. A substrate mounting table for mounting a substrate, comprising: a first plate shaped member provided with a surface having a plurality of fluid injection openings opened on the surface; a second plate shaped member provided with a plurality of grooves which form a fluid supply channel for supplying a fluid through the fluid injection openings; and a thermally sprayed ceramic layer having a thermally spayed metal layer therein and covering the surface, the substrate being mounted on a mounting surface of the thermally sprayed ceramic layer, wherein the fluid is supplied between the mounting surface and the substrate, wherein the first plate shaped member and the second plate shaped member are joined to each other, wherein each of the grooves has a bottom portion formed in a curved shape protruding downward, wherein the fluid injection openings are concentrically disposed and at least a part of the grooves is concentrically formed with regard to each other, and wherein the substrate mounting table further including a plurality of cleaning openings extending through the second plate and into the plurality of grooves, and further wherein the plurality of cleaning openings are closed by plugging members.