Patent ID: 7368735

Claim:
A method of creating charged beam drawing data used for a charged beam drawing apparatus to draw a pattern on a drawing area of a sample by irradiating a charged beam onto the sample, the method comprising: selecting a charged beam drawing apparatus which divides the drawing area into two or more hierarchical fields including a plurality of main fields, a plurality of subfields which are lower in layer than the plurality of main fields and a plurality of unit fields which are lower in layer than the plurality of subfields, and draws a pattern using the unit field as a drawing unit, as the charged beam drawing apparatus to draw the pattern; dividing design data corresponding to the pattern to be drawn on the drawing area into a plurality of first design data corresponding to the plurality of main fields, dividing each of the plurality of first design data into a plurality of second design data corresponding to the plurality of subfields, and dividing each of the plurality of second design data into a plurality of third design data corresponding to the plurality of unit fields; evaluating quality of resist resolution to a predetermined dimension on each of the plurality of unit fields; creating a table which relates the plurality of unit fields to the quality of the resist resolution based on an evaluation result acquired by the evaluating the quality of the resist resolution; judging whether or not each of the plurality of third design data corresponds to data having the predetermined dimension and corresponds to a pattern falling in the unit field which the quality of the resist resolution is rejectable based on the predetermined dimension and the table; and converting data judged to correspond to the data among the plurality of third design data into first drawing data after performing a coordinate conversion so that the data fall in the unit field which the resist resolution is acceptable, and converting data judged not to correspond to the data among the plurality of third design data into second drawing data without performing the coordinate conversion.