Patent ID: 7045465
Filing Date: 2006-05-16
Classification: H01J,H01L,Y10S

Abstract:
1. A particle-removing method for a semiconductor device manufacturing apparatus that comprises an etching processing chamber, a pair of processing electrodes formed by an upper electrode and a lower electrode, which are installed within said processing chamber, and a susceptor that holds a substrate to be processed onto the top of said lower electrode, a processing gas being introduced into said etching processing chamber, and a prescribed voltage being applied to said processing electrodes, so as to generate a plasma of said gas, thereby processing said substrate on said susceptor, a particle-removing electrode being provided for the purpose of removal of particles in said processing chamber, and a purge gas being introduced into said processing chamber after completion of etching of said substrate, wherein a negative voltage is applied to said particle-removing electrode during a period from a time before stopping applying said prescribed voltage to said processing electrode to a time after starting introducing said purge gas into said processing chamber, so as to remove charged particles inside said processing chamber.