Patent ID: 7301161
Filing Date: 2007-11-27
Classification: B82Y,H01J,H01L

Abstract:
1. A method of producing electron beam writing data in which a figure cell contained in cell-based device pattern in electron beam lithography of character projection scheme is extracted as a character pattern, the method comprising: removing an overlap of pattern data included in the figure cell; producing a character pattern cutting frame from a cell allocation frame included in the figure cell; assigning a figure included inside of the produced character pattern cutting frame to a pattern to be shot in a character projection scheme as a character pattern; defining a figure included outside of the produced character pattern cutting frame as a non-character pattern; removing an overlap between an adjacent pattern and the non-character pattern; and assigning a portion of the non-character pattern which is not overlapped on the adjacent pattern to a pattern to be shot in a variable shaping beam scheme.