Patent ID: 6273023
Filing Date: 2001-08-14
Classification: C23C,H01J

Abstract:
A plasma processing apparatus comprising:external-atmosphere block means blocking an external atmosphere from an interior thereof for maintaining an atmosphere therein;an electrode arranged in said external-atmosphere block means;a dielectric film formed on a surface of said electrode;gas introduction means for introducing a desired gas into said external-atmosphere block means;plasma production means for changing said gas into a plasma;voltage value calculation means for calculating, depending on a processing condition for producing a de sired plasma, a voltage value corresponding to a sum of a value of a minimal actual attract and hold voltage required to be applied between one surface of a semiconductor wafer mounted on said dielectric film and a surface of said dielectric film to attract and hold one surface of the semiconductor wafer on the surface of said dielectric film and a value of a self-bias voltage generated at the other surface of the semiconductor wafer when the desired plasma is produced; andattract-and-hold voltage generation means for applying a voltage of the voltage value calculated by said voltage value calculation means to said electrode.