Patent ID: 6136164
Filing Date: 2000-10-24
Classification: C23C,H01J

Abstract:
An apparatus for detecting a position of a collimator of a sputtering processing vessel, comprising:a target holder positioned in said sputtering processing vessel, said target holder having a target attached to a bottom surface thereof;a substrate holder positioned in said sputtering processing vessel to oppose said target holder, wherein a substrate is put on a top surface of said substrate holder;a pair of supporters on an inner surface of said sputtering processing vessel between said target holder and said substrate holder, protruding from an inner surface of said sputtering processing vessel and opposed to each other, wherein a collimator is put on said supporters; anda sensor attached to the bottom surface of each of said supporters, whereby as a horizontal height of said collimator is lower than a horizontal height of said sensor, said sensor sending out an alarm indicating said horizontal height of said collimator has changed.