Patent ID: 8662010
Filing Date: 2014-03-04
Classification: C23C,H01J

Abstract:
1. A plasma processing apparatus comprising: a processing chamber for generating plasma therein for processing a surface of a substrate with atoms and molecules that are excited and activated in said processing chamber; a first flat ring-shaped antenna that is disposed at a top of a ceiling surface of said processing chamber; first power supply means for supplying power to said first flat ring-shaped antenna to generate the plasma within said processing chamber, said first power supply means comprising an alternating current power source; a second antenna that is located outwardly of a diameter of said ceiling surface of said processing chamber and that is disposed around said first flat ring-shaped antenna in the same plane as said first flat ring-shaped antenna; and a second power supply means for supplying power to said second antenna so that electric current flows in a direction opposite to a direction of electric current supplied to said first flat ring-shaped antenna, said second power supply means comprising another alternating current power source.