Patent ID: 7136087

Claim:
A multi-exposure drawing method for drawing a pattern on a drawing surface, using an exposure unit including a plurality of optical modulation elements arranged in both a first array-direction and a second array-direction, the method comprising: relatively moving said exposure unit in relation to said drawing surface in a drawing direction, which is inclined so as to form an angle with respect to said first array-direction, whereby said exposure unit is gradually shifted in said second array-direction during the movement of said exposure unit; and repeatedly and selectively operating said optical modulation elements whenever said exposure unit is moved in said drawing direction such that a movement distance of a unit exposure zone along the first array-direction becomes “A+a”, and a movement distance of said unit exposure zone along the second array-direction becomes “b”, defined as follows: “A” is a distance corresponding to an integer-multiple of a dimension of said unit exposure zone produced on said drawing surface by each optical modulation element, and “a” is a smaller distance than the dimension of said unit exposure zone, wherein said exposure unit is continuously moved at a constant velocity, and the modulation of said light beam by said optical modulation elements is performed whenever said unit exposure zone is shifted by said distance of “A+a”, a time of said modulation being shorter than a time during which said exposure unit is moved by the dimension of said unit exposure zone.