Patent ID: 7067830
Filing Date: 2006-06-27
Classification: B82Y,H01J

Abstract:
1. A multi-electron beam exposure method, wherein multiple electron beams are applied to a sample surface mounted on a traveling sample stage to perform repeated exposure of chip patterns wherein the method comprises the steps of: in a case that the sample surface is represented in an X-Y coordinate system, a continuous traveling direction of a sample stage is assumed as a Y-axis direction, and the sample surface has a plurality of chips of the same kind located in a line at equal intervals respectively in the X and Y directions which are exposed; partitioning an exposure region of the sample surface into multiple stripe regions having a width in the X-axis direction; further partitioning each of the multiple stripe regions into multiple main fields having a width in the Y-axis direction; setting at least one of the widths of the main fields in the X- and Y-axis directions to an integral submultiple of the chip size; storing exposure pattern data for one chip based on the partitioned main fields as a unit; and reading out the stored exposure pattern data a number of times corresponding to the number of the chips repeatedly; wherein each electron beam provides repeated exposure of same regions of the chips.