Patent ID: 6429445
Filing Date: 2002-08-06
Classification: H01J

Abstract:
An electron beam irradiating apparatus for treating a layer formed on a wafer, said apparatus comprising:a chamber having an opening at a top side of the chamber; a cathode plate disposed to cover the opening of the chamber, at least the bottom surface of the cathode plate, which faces an inner bottom surface of the inside of the chamber, being formed of a non-metal conductive material; a susceptor on which the wafer can be loaded disposed on the inner bottom surface of the chamber; and a grid plate disposed between the cathode plate and the susceptor, wherein, upon application of a potential difference across the cathode plate and the grid plate, a beam of electrons released from the bottom surface of the cathode plate impinges on the layer formed on the wafer to treat the layer formed on the wafer.