Patent ID: 6605392
Filing Date: 2003-08-12
Classification: G03F

Abstract:
A mask structure for X-ray lithography, comprising:an X-ray transmission film to be disposed opposed to a workpiece in X-ray exposure, the X-ray transmission film having an X-ray absorptive material corresponding to a pattern to be printed on the workpiece; and a thin film covering at least a portion of the X-ray transmission film, at a position spaced apart from the X-ray transmission film to define a space between the X-ray transmission film and the thin film, the thin film having (i) a first anti-reflection property with respect to first alignment light of a first wavelength different from that of X-rays used for the X-ray exposure, and (ii) a second anti-reflection property with respect to second alignment light of a second wavelength different from the first wavelength and from that of the X-rays used for the X-ray exposure.