Patent ID: 6471836
Filing Date: 2002-10-29
Classification: H01J

Abstract:
A sputtering apparatus comprising:a reactive chamber for maintaining a vacuum therein; a vacuum exhaust pump for evacuating the reactive chamber to produce a pressure-reduced atmosphere therein; a gas supply system for supplying gas into the reactive chamber; a substrate holder housed in the reactive chamber, for mounting thereon a substrate to be treated with plasma; a cathode disposed opposite the substrate holder; a power source for supplying a voltage to the cathode; a deposition preventing plate disposed along the circumference of the substrate holder; and an insulating member integrally formed with the deposition preventing plate and interposed between the cathode and the deposition preventing plate, the insulating member having a target side and a recess in the target side opening toward a target, the recess having at least two different depths, wherein said insulating member operates as a target presser.