Patent ID: 9081301
Filing Date: 2015-07-14
Classification: G01B,G03F,H01L,Y10T

Abstract:
1. An exposure method of exposing an object with an energy beam, the method comprising: mounting the object on a movable body that can move at least in a first direction and a second direction orthogonal in a predetermined plane; measuring positional information of the movable body using an encoder system, which has one of a grating section and a head unit arranged at the movable body where the object is held and the other arranged external to the movable body and measures positional information of the movable body in the predetermined plane with a head that faces the grating section among a plurality of heads of the head unit; and controlling a position of the movable body in the predetermined plane, based on correction information to compensate for at least a measurement error of the encoder system that occurs due to a position or displacement, in a direction orthogonal to a measurement direction in the predetermined plane, of a detection point of the head used for the measurement and measurement information of the encoder system.