Patent ID: 8342121
Filing Date: 2013-01-01
Classification: H01J,H01L

Abstract:
1. A plasma processing apparatus that generates a plasma of a processing gas by a radio frequency discharge in a processing chamber capable of being depressurized to perform a specified plasma processing on a target substrate disposed at a specified location in the processing chamber by using the plasma, the plasma processing apparatus comprising: a first member having a first front surface facing the plasma in the processing chamber and a first mating surface having a first inclined surface extending obliquely upward from the first front surface and a first vertical surface extending vertically upward from the first inclined surface; and a second member having a second front surface that forms an angled portion together with the first front surface of the first member in a manner to face the plasma in the processing chamber and a second mating surface having a second inclined surface extending obliquely upward from the second front surface and a second vertical surface extending vertically upward from the second inclined surface, wherein the first inclined surface and the first vertical surface face the second inclined surface and the second vertical surface, respectively, with a gap therebetween, and wherein the gap has an opening at the angled portion and an inner portion of the gap between the first inclined surface and the second inclined surface is oriented along an extended straight line that substantially equally bisects an angle between the first front surface and the second front surface.