Patent ID: 6770408
Filing Date: 2004-08-03
Classification: G03F,Y10S

Abstract:
A dust particle inspection method for use with an X-ray mask for use in a proximity exposure apparatus, wherein said X-ray mask comprises an X-ray transmission film having a layered X-ray absorptive material formed thereon and a holding member for holding said X-ray transmission film, wherein a peripheral portion of the X-ray transmission film and the X-ray absorptive material is formed into a step-like shape with respect to the holding member wherein the method comprises:when the dust particle inspection is made with respect to the peripheral portion of the X-ray transmission film and the X-ray absorptive material, an even signal output is produced therefrom such that the peripheral portion of the X-ray transmission film and the X-ray absorptive material can be detected to enable dust particle control at the peripheral portion.