Patent ID: 6947519
Filing Date: 2005-09-20
Classification: G03F,G21K

Abstract:
1. An X-ray exposure apparatus comprising: an exposure unit for exposing a substrate using X-rays, said exposure unit comprising an X-ray mirror to obtain the X-rays from light output from a radiation source, wherein the X-ray mirror contains a material having an absorption edge in a wavelength range outside a range of 0.45 nm to 0.7 nm, the X-ray mirror contains at least one material selected from the group consisting of iron, cobalt, nickel, copper, manganese, chromium, and an alloy, a nitride, a carbide and a boride thereof, and said exposure unit comprises a short-wavelength cutting X-ray mirror for absorbing at least 90% of X-rays in a wavelength range of less than 0.3 nm.