Patent ID: 8207514

Claim:
A charged particle beam drawing apparatus, comprising: a drawing portion for drawing patterns corresponding to figures included in a drawing data, in a drawing area of a workpiece, by irradiating the workpiece with a charged particle beam, wherein the workpiece is formed by applying a resist to an upper surface of the workpiece; a proximity effect correcting map forming portion for forming a proximity effect correcting map having meshes, so that the figures included in the drawing data are placed in the proximity effect correcting map; a representative figure forming portion for forming representative figures, wherein area of a representative figure in a mesh is equal to gross area of figures in the mesh; a proximity effect correction dose calculating portion for calculating a proximity effect correction dose of the charged particle beam in each mesh, on the basis of area of each representative figure in each mesh; a figure area changing portion for changing area of at least one figure, before the representative figures are formed by the representative figure forming portion, if it is necessary to change the proximity effect correction dose of the charged particle beam for drawing at least one pattern corresponding to the at least one figure; and a proximity effect correction dose changing portion for changing the proximity effect correction dose of the charged particle beam for drawing the at least one pattern corresponding to the at least one figure, calculated by the proximity effect correction dose calculating portion, if it is necessary to change the proximity effect correction dose of the charged particle beam for drawing the at least one pattern corresponding to the at least one figure.