Patent ID: 8497979
Filing Date: 2013-07-30
Classification: G03F

Abstract:
1. An exposure method for forming a different exposure pattern on each of a plurality of exposure areas set on a subject to be exposed in a conveying direction of the subject to be exposed at a predetermined interval while conveying the subject to be exposed in one direction, the exposure method comprising the steps of: moving a shutter in synchronization with a conveying speed of the subject to be exposed and shutting off source light when exposure on one exposure area of the subject to be exposed is completed, the exposure being performed in a state in which a photomask is stopped by using one mask pattern group of the photomask in which a plurality of types of mask pattern groups corresponding to each exposure pattern is arranged and formed in the conveying direction of the subject to be exposed at a predetermined interval; moving the subject to be exposed backwards by a distance in which the subject to be exposed moves while the shutter moves, during shut-off of the source light, and switching the mask pattern group from the one mask pattern group to another mask pattern group by moving the photomask; and restarting the conveying of the subject to be exposed in the one direction, and at the same time, moving the shutter in synchronization with the conveying speed of the subject to be exposed to release shut-off of the source light, and perform exposure on the following exposure area, when the switching the mask pattern group from the one mask pattern group of the photomask to another mask pattern group is completed.