Patent ID: 6287976
Filing Date: 2001-09-11
Classification: H01J,H01L

Abstract:
A method for processing an article with plasma, the method comprising:generating plasma; andmoving the article through the plasma;wherein in a first period of time, the article motion through the plasma includes a rotational motion around a first axis in a first direction; andin a second period of time, the article motion through the plasma includes a rotational motion around the first axis in a second direction opposite from the first direction;wherein the rotational motion around the first axis in the first and second periods of time includes rotating the article around the first axis as the first axis rotates around a second axis;wherein in the first period of time, as the article rotates around the first axis in the first direction, the first axis rotates around the second axis in a third direction, and in the second period of time, as the article rotates around the first axis in the second direction, the first axis rotates around the second axis in a fourth direction opposite from the third direction.