Patent ID: 8471225

Claim:
A charged particle beam writing method comprising: inputting layout information of a plurality of chips on which pattern formation is to be achieved, and setting, using the layout information, a plurality of writing groups each being composed of at least one of the plurality of chips and each having writing conditions differing from each other; setting a frame which encloses a whole of all chip regions in all the plurality of writing groups; virtually dividing the frame into a plurality of stripe regions in a predetermined direction while keeping chips of writing groups differing from each other intermingled; setting an order of each of the plurality of stripe regions such that a reference position of the each of the plurality of stripe regions is located in order in the predetermined direction; and writing a pattern in the each of the plurality of stripe regions onto a target workpiece according to the order which has been set, by using a charged particle beam, wherein the writing conditions include at least one of multiplicity, a type of forward-forward (FF), forward-backward (FB), backward-forward (BF), and backward-backward (BB) defining a writing direction of writing each stripe region in order, a type of constant velocity writing, a variable velocity writing, and a step-and-repeat writing, a dividing height of a plurality of stripe regions, and a size of a subfield obtained by further dividing the plurality of stripe regions.