Patent ID: 6653644
Filing Date: 2003-11-25
Classification: B82Y,G03F,H01J

Abstract:
A pattern exposure method using a pattern exposure system which comprisesa pattern exposure mask including a plurality of exposure regions which are separated from one another by a boundary region and which correspond to a plurality of circuit sub-patterns obtained by dividing one circuit pattern, each of said exposure regions including a plurality of beam transmission parts and a plurality of beam scattering parts, and a beam irradiating means for irradiating a charged particle beam to said pattern exposure mask, the method including the step of irradiating with said charged particle beam from said beam irradiating means each of said plurality of exposure regions in said pattern exposure mask one at a time so as to cause the transmitted charged particle beam passing through said beam transmission parts of said exposure region in said pattern exposure mask to expose a circuit member therein one at a time, said irradiation areas of the charged particle beam passing through the respective exposure regions in said pattern exposure mask being arranged adjacent to one another on a surface of said circuit member with no intervening portion corresponding to said boundary region, and permitting a background exposure attributable to the charged particle beam scattered by said beam scattering parts and said boundary region, the charged particle beam scattered by said boundary region in said pattern exposure mask being restrained to a predetermined range by a beam restraining means, said beam restraining means retracted from an edge of said boundary region by a predetermined distance.