PLASMA PROCESSING EQUIPMENT AND PROCESSING METHOD

摘要

PROBLEM TO BE SOLVED: To provide the plasma processing equipment and processing method that reduces impurities via reactor vessels, maintaining plasma stability. SOLUTION: In the plasma processing equipment, 90% of the side wall of the inner wall 101 in the reaction chamber 1 is covered with a dielectric substance 102, and a grounded conductive material 21a with an area size smaller than or equal to 10% of the side wall of the inner wall 101 is provided in a way that direct current flows via the plasma. A DC earth made up of a conductive material 21 is grounded at a location where the floating potential of plasma (or plasma density) is higher than that (or plasma density) of plasma 9 near a wafer holding electrode 14 with a relatively large degree of wall reduction. COPYRIGHT: (C)2005,JPO&NCIPI