Patent ID: 7048869
Filing Date: 2006-05-23
Classification: H01J,H01L

Abstract:
1. In a plasma processing method using a vacuum processing chamber, a gas supply plate in said vacuum processing chamber, a sample table for mounting a sample which is processed in said vacuum processing chamber wherein the sample is an electrically insulating film, and a plasma generation means, a side wall of said vacuum processing chamber including a temperature adjustment side wall which is positioned in an upper part of said side wall of said vacuum processing chamber, whereby said temperature adjustment side wall surrounds a plasma generating area located between said sample table and said gas supply plate, and a temperature controlling means for controlling a temperature of said temperature adjustment side wall by using a coolant medium, the plasma processing method comprising the steps of: generating a plasma in said plasma generating area in response to introduction of a gas which contains at least carbon and fluorine for processing said sample, wherein said plasma generation is effected using an electron cyclotron resonance system in which a microwave having a frequency of from 300 MHz to 1 GHz is employed and wherein a degree of plasma dissociation is an intermediate degree and said gas species containing carbon and fluorine is generated fully in the plasma, and concurrently with said plasma generating step, controlling a temperature of said temperature adjustment side wall of said vacuum processing chamber to be in a range of 10° C. to 120° C. wherein a temperature control accuracy of said temperature adjustment side wall, in said controlling, is ±5° C. for restraining a gas species discharge from said temperature adjustment side wall which contains carbon and fluorine according to a plasma dissociation.