Patent Number: 062556630
Section: claims

1. A charged particle beam exposure apparatus, having deflectors, irradiating a pattern on a mask or reticle with a charged particle beam, and projecting an image of the pattern onto a sensitive substrate, wherein: semi-angles and ratio of ampere-turn values of deflecting coils of at least one of the deflectors is set in such a manner that a 3.theta. component, 5.theta. component and 7.theta. component of a magnetic field generated by the deflectors become substantially zero.  at least one of the deflectors has n(n.gtoreq.2) sets of deflecting coils of semi-angles .theta.i of substantially 180.degree..times.i/(2n+1) (i=1.about.n), and ratio of ampere-turn values Ji of the deflecting coils are set to substantially fulfill the following equation with regards to integer values k from 1 to m; ##EQU10##  at least one of the deflectors has n(n.gtoreq.3) sets of deflecting coils of semi-angles .theta.i of substantially 180.degree..times.(i-1/2)/(2n-1) (i=1.about.n), and ratio of ampere-turn values Ji of the deflecting coils are set to substantially fulfill the following equation with regards to integer values k from 1 to m; ##EQU11##  at least one of the deflectors has at least one of a deflecting coil with a semi-angle of 45.degree. and a deflecting coil having a semi-angle sum of 90.degree. with an another deflecting coil within the deflector.  at least one of the deflectors has n(n.gtoreq.3) sets of deflecting coils of semi-angles of .theta.i of substantially 180.degree..times.i/(2n) (i=1.about.n), and ratio of ampere-turn values Ji of the deflecting coils are set to substantially fulfill the following equation with regards to integer values k from 1 to m; ##EQU12##  at least one of the deflectors has n(n.gtoreq.3) sets of deflecting coils of semi-angles .theta.i of substantially 180.degree..times.(i-1/2)/(2n) (i=1.about.n), and ratio of ampere-turn values Ji of the deflecting coils are set to substantially fulfill the following equation with regards to integer values k from 1 to m; ##EQU13##  at least one of the deflectors has n(n.gtoreq.3) sets of deflecting coils and ampere-turn values of these deflecting coils are set substantially equal.  in the lithographic step, a charged particle beam exposure apparatus as defined in claim 1. 2. The charged particle beam exposure apparatus of claim 1 wherein: 3. The charged particle beam exposure apparatus of claim 1 wherein: 4. The charged particle beam exposure apparatus of claim 1 wherein: 5. The charged particle beam exposure apparatus of claim 4 wherein: 6. The charged particle beam exposure apparatus of claim 4 wherein: 7. The charged particle exposure apparatus of claim 1 wherein: 8. A semiconductor device manufacturing method having a lithographic step wherein: 9. A semiconductor device manufactured by the semiconductor device manufacturing method defined in claim 8.