Patent ID: 7806078
Filing Date: 2010-10-05
Classification: C23C,H01J

Abstract:
1. A plasma treatment apparatus which introduces a treatment gas into a treatment chamber, and generates a plasma in said treatment chamber to treat a surface of a substrate with atoms and molecules excited and activated in said treatment chamber, comprising: a container defining said treatment chamber and including an upper container and a lower container connected to said upper container; a circumferential groove, formed in said upper container, for allowing passage of said treatment gas; a plurality of treatment gas nozzles connected to said circumferential groove and arranged uniformly along the circumferential groove; an introduction groove, formed in said lower container, for allowing passage of said treatment gas, said introduction groove terminating at a first end and a second end after extending for a length of nearly a half of a circumference in a circumferential direction of said container; treatment gas introduction means connected to said introduction groove, said treatment gas introduction means in communication with a halfway portion of said introduction groove; and communication paths including a first communication path that extends and allows communication between the first end of said introduction groove and a first portion of said circumferential groove, and a second communication path that extends and allows communication between the second end of said introduction groove and a second portion of said circumferential groove, the first portion and the second portion being portions in said circumferential groove that do not oppose any of said plurality of treatment gas nozzles with respect to a circumferential direction of the circumferential groove.