Patent ID: 8752503
Filing Date: 2014-06-17
Classification: C23C,H01J,H05H

Abstract:
1. A plasma processing device, comprising: a chamber; microwave generating means for generating a microwave; microwave introducing means for introducing the microwave generated by said microwave generating means from outside of said chamber to inside of said chamber; and bias voltage applying means for applying a bias voltage to a member having a cylindrical portion to be processed which is provided in said chamber, characterized in that said plasma processing device further comprises a microwave increasing device provided between said microwave introducing means and said member having the cylindrical portion to be processed for introducing the microwave, which has been introduced into said chamber by said microwave introducing means and which exists outside said member having the cylindrical portion to be processed, into said member having the cylindrical portion to be processed and increasing an amount of microwave that is absorbed by plasma in said member having the cylindrical portion to be processed, the cylindrical portion to be processed as an object of plasma processing is an inner surface of said member having the cylindrical portion to be processed, said member having the cylindrical portion to be processed has at least one open end and the inner surface in a shape that extends from the open end to a side opposite to the microwave introducing means, said microwave increasing device is a metal member having a hollow inside and that has an opening as an inlet for the microwave in said chamber and said microwave increasing device is provided at the open end of said member having the cylindrical portion to be processed, said microwave increasing device introduces the microwave outside said member having the cylindrical portion to be processed through said opening and further introduces the microwave to the side opposite to said microwave introducing means on the inner surface side of said member having the cylindrical portion to be processed; and said microwave increasing device is set in direct contact with said member having the cylindrical portion to be processed to support said member having the cylindrical portion to be processed such that the hollow of said microwave increasing device communicates with an inside space of said member having the cylindrical portion to be processed.