Patent ID: 6110287
Filing Date: 2000-08-29
Classification: C23C,H01J,H01L

Abstract:
A plasma processing apparatus, comprising:a processing chamber;a first electrode having gas introducing means;a first gas introducing hole formed in said first electrode;a second electrode provided opposite said first electrode;a resistance applying means having a resistance plate provided with a second gas introducing hole formed therein,wherein a process gas is supplied to said processing chamber via said first gas introducing hole formed in said first electrode,an object to be processed held on said second electrode is subjected to plasma processing,said resistance applying means applies resistance to the process gas flowing to said processing chamber via said first gas introducing hole from said gas introducing means such that a plasma discharge is prevented from occurring under a condition of a process pressure less than 0.5 Torr in said processing chamber,said resistance plate is provided between said first electrode and said gas introducing means, andthe resistance to the flowing process gas is varied by varying at least a thickness of said resistance plate, a pitch of one of said first and second gas introducing holes, and a diameter of one of said first and second gas introducing holes.