Patent ID: 6614034
Filing Date: 2003-09-02
Classification: B82Y,H01J

Abstract:
A charged-particle-beam (CPB) microlithography apparatus, comprising:an illumination-optical system and projection-optical system contained within a CPB-column; a reticle stage configured to hold a reticle during microlithographic exposure, the reticle stage being actuated by a respective linear motor; a substrate stage configured to hold a substrate during microlithographic exposure, the substrate stage being actuated by a respective linear motor; a reticle chamber containing the reticle stage and its respective linear motor, the reticle chamber being situated between the illumination-optical system and the projection-optical system and being made of a ferromagnetic material; a substrate chamber containing the substrate stage and its respective linear motor, the substrate chamber being situated downstream of the projection-optical system and being made of a ferromagnetic material; a first partition shield, made of a ferromagnetic material, situated in the reticle chamber between the respective linear motor and the CPB-column, the first partition shield defining a gap allowing unobstructed movement of the reticle stage through the gap; and a second partition shield, made of a ferromagnetic material, situated in the substrate chamber between the respective linear motor and the CPB column, the second partition shield defining a gap allowing unobstructed movement of the substrate stage through the gap.