Patent ID: 6509960
Filing Date: 2003-01-21
Classification: G01N,H01J,H01L

Abstract:
A method for stripping endpoint detection of a photo-resist material on a substrate surface, comprising:positioning a substrate having photo-resist material on a substrate surface thereof on a movable stage; illuminating a portion of the substrate surface with a stationary sheet beam of light from a selected first direction with respect to the substrate surface, the stationary sheet beam of light having a width at least approximately equal to a width of the substrate; collecting from a fixed location, emanated light from the illumination of the portion of the substrate surface; moving the movable stage relative to the stationary sheet beam of light to illuminate the entire substrate surface and collect emanated light from the entire substrate surface; generating a signal indicative of an intensity of the emanated light; and providing at least one of a plasma generation cessation signal, a substrate transfer signal and a movable stage control signal, responsive at least in part to the signal indicative of the intensity of the emanated light.