Patent ID: 7158210
Filing Date: 2007-01-02
Classification: G03F

Abstract:
1. A projection exposure apparatus which uses a mask including plural columns of a mask pattern for repeated exposure to a member to form plural columns of an exposure pattern thereon, said apparatus comprising: an illumination system which irradiates light to the mask; a projection system which projects the light from the mask onto the member; an exposure stage which moves the member; a mask stage which moves the mask; and a controller which controls light irradiation from the illumination system to the mask, driving of the exposure stage, and driving of the mask stage, wherein the controller alternately performs the light irradiation and step driving of the exposure stage for moving the member by a movement amount equal to n times a pitch of the columns of the exposure pattern, wherein the controller performs step driving of the mask stage for moving the mask by a movement amount equal to n times a pitch of the columns of the mask pattern in association with step driving of the exposure stage in an early phase and a later phase of the repeated exposure, and wherein n is a natural number smaller than the number of the columns of the mask pattern.