Patent ID: 7956985
Filing Date: 2011-06-07
Classification: G03B,G03F

Abstract:
1. An exposure apparatus configured to expose a pattern of an original onto a substrate by utilizing light from a light source, the exposure apparatus comprising: a projection optical system configured to project the pattern of the original onto the substrate; a substrate stage configured to move the substrate in each of two directions orthogonal to an optical-axis direction of the projection optical system so as to change an exposure area among shots on the substrate, each shot being an area to be exposed by one exposure action, and the shots including a first shot, a second shot, and a third shot, wherein a moving distance of the substrate stage which moves the substrate and changes the exposure area from the first shot to the second shot is smaller than a moving distance of the substrate stage which moves the substrate and changes the exposure area from the first shot to the third shot; a driver used for one of a height correction of the shot of the substrate in the optical-axis direction of the projection optical system, an inclination correction relative to the two directions orthogonal to the optical-axis direction of the projection optical system, a curvature-of-field correction for the shot, a magnification correction for the shot, and a rotational correction around an optical axis for the shot; and a controller configured to obtain a time period necessary for the driver to transfer from a correction state for the first shot to a correction state for the second shot and a time period necessary for the driver to transfer from the correction state for the first shot to a correction state for the third shot, and control the substrate stage so as to expose the first shot, the third shot, and the second shot in order when the time period for the driver to transfer from a correction state for the first shot to a correction state for the second shot is longer than a time period for the substrate stage to move the exposure area from the first shot to the second shot, and a time period for the driver to transfer from the correction state for the first shot to a correction state for the third shot.