Patent ID: 6084938
Filing Date: 2000-07-04
Classification: G03F,G21K

Abstract:
An X-ray projection exposure apparatus, comprising:a mask chuck for holding a reflection X-ray mask having a mask pattern thereon;a wafer chuck for holding a wafer onto which the mask pattern is transferred;an X-ray illuminating system for illuminating the reflection X-ray mask, held by said mask chuck, with X-rays;an X-ray projection optical system for projecting the mask pattern of the reflection X-ray mask onto the wafer held by said wafer chuck with a predetermined magnification, wherein said mask chuck comprises a static electricity generating mechanism for generating static electricity for attracting and holding the reflection X-ray mask by an electrostatic force; anda detection mechanism for detecting an attraction force with which the reflection X-ray mask is held as a result of the electrostatic force generated by said static electricity generating mechanism.