Patent ID: 9059105
Filing Date: 2015-06-16
Classification: H01J,H01L

Abstract:
1. A method for manufacturing an ashing device used for processing a substrate including an exposed metal film and for ashing organic material on the substrate in a processing chamber, the method comprising: arranging a stage which holds a substrate; arranging a diffuser plate facing toward the stage which diffuses active species supplied to the processing chamber and includes first through holes through which the active species pass; and arranging a porous plate between the stage and the diffuser plate, in which the porous plate includes, a metal base plate; a metal film, formed on the metal base plate from the first metal sputtered and scattered from the substrate by the active species and functioning as a metal layer facing towards the substrate; and a metal oxide layer formed on the metal base plate facing towards the diffuser plate and functioning as a passivation film facing towards the diffuser plate; and second through holes, through which the active species pass; wherein, the stage is connected to a high frequency power supply which applies a high frequency bias; the porous plate serves as a ground electrode that is connected to the processing chamber to function as an opposite electrode of the stage; and the first metal is one selected from a group consisting, of copper (Cu), gold (Au), solder, platinum (Pt), and iridium (Ir).