Patent ID: 9039865
Filing Date: 2015-05-26
Classification: H01J

Abstract:
1. A plasma processing apparatus comprising: a vacuum processing chamber for generating plasma in the interior thereof; a means for introducing gas into the vacuum processing chamber; a stage which is disposed in the vacuum processing chamber, the stage being configured for placement of a sample on the stage; an insulating dielectric window which is disposed at an upper area of the vacuum processing chamber; a coil-like induction antenna which is disposed above the dielectric window and which irradiates an induction magnetic field; and a high frequency power supply which supplies a high frequency power to the induction antenna via a matching box; wherein the plasma processing apparatus further comprises a first conductor which is disposed above the dielectric window and which is disposed around a periphery of the induction antenna, the first conductor has a closed ring shape, a width of the first conductor gradually increases along a circumference thereof from a power supply end of the induction antenna towards a terminal end of the induction antenna, and the width of the first conductor is minimum at the power supply end of the induction antenna, and the width of the first conductor is maximum at the terminal end of the induction antenna.