Patent ID: 6387597
Filing Date: 2002-05-14
Classification: G03F,H05K,Y10S

Abstract:
A method for imagewise exposing a non-planar resist layer, the method comprising:a) providing a variable focus optical system and a non-planar, layer of a non-integrating resist on a substrate; b) illuminating selected areas on a surface of the resist layer a first time with the optical system at a first focus setting and thereby causing parts of the resist which are within the selected areas on the substrate and are at a first elevation to be converted from an unexposed state to an exposed state while not converting the resist in the selected areas at a second elevation; and, c) illuminating the selected areas on the surface of the resist layer a second time with the optical system at a second focus setting and thereby causing parts of the resist which are within the selected areas on the substrate and are at the second elevation to be converted from the unexposed state to the exposed state.