Patent ID: 6204911
Filing Date: 2001-03-20
Classification: G03F

Abstract:
An exposure apparatus, comprising:a light source for providing pulse light;mask scanning means for scanning a mask having a pattern;wafer scanning means for scanning a wafer onto which the pattern is to be projected, wherein said mask scanning means and said wafer scanning means scan the mask and the wafer in a timed relation so that the mask is illuminated while superposing portions of an illumination region defined by the pulse light and being narrower than the pattern such that the pattern is lithographically transferred onto the wafer;light emission period determining means for determining an emission period of the pulse light when a required precision of an integrated exposure amount is changed, wherein the emission period is changed in accordance with the changed precision of the integrated exposure amount; andan interface into which information related to the required precision of the integrated exposure amount is inputted and from which the information is outputted to said light emission period determination means.