Patent ID: 6524449
Filing Date: 2003-02-25
Classification: C23C,G02B

Abstract:
A method for measuring flux distribution of a vapor deposition source, including the steps of:(a) holding a patterned wafer stationary relative to the source, the wafer having a layer of photoresist material with a pattern of features in the layer of photoresist material; (b) while performing step (a), performing a vapor deposition operation in which the source coats a film of material on the photoresist material and in the features; (c) after step (b), performing a lift-off operation to remove from the wafer the photoresist material and the vapor deposited material on said photoresist material, so that the vapor deposited material in the features remains as an array of elevated features on the wafer, each of the elevated features having a thickness; and (d) measuring the thickness of each of the elevated features using a profilometer to generate flux distribution data indicative of feature thickness as a function of position on the wafer, the flux distribution data determining the flux distribution of the source.