Patent ID: 6411365
Filing Date: 2002-06-25
Classification: G03F

Abstract:
An exposure apparatus for scanning a reticle and a wafer in synchronism to optically transfer a pattern drawn on the reticle onto the wafer, thereby forming a device, said apparatus comprising:a first drive means for holding and scanning the reticle; a second drive means for holding and scanning the wafer; determining means for determining a scanning distance of said first drive means and said second drive means by a sum of a first distance through which said first drive means and said second drive means travel until reaching a scanning speed, a second distance through which said first drive means and said second drive means travel during exposure, and a third distance through which said first drive means and said second drive means travel during a settling time from a time when said first drive means and said second drive means reach the scanning speed to a time when exposure is enabled; and a controller for controlling said first drive means and said second drive means by exposure parameters, the settling time being variably set in accordance with the exposure parameters.