Patent ID: 6891175
Filing Date: 2005-05-10
Classification: G03B,G03F

Abstract:
1. A scanning exposure apparatus comprising: a master stage for scanning a master; a substrate stage for scanning a substrate; transfer means for supplying/recovering the substrate to/from said substrate stage; positioning means for relatively positioning the substrate and the master; and scanning velocity determination means for determining a scanning velocity so as to maximize the number of substrates that can be exposed per unit time, wherein said scanning velocity determining means determines, as a scanning velocity in an actual exposure operation, a lowest one of: (i) a maximum scanning velocity determined from apparatus performance: Vmax, (ii) a scanning velocity determined from an exposure illuminance and a required exposure amount: Vd, and (iii) a scanning velocity at which the number of substrates that can be processed per unit time is maximized, which is determined from the transfer pattern size, a layout of the transfer pattern on the substrate, said transfer means, said master scanning means, said substrate stage scanning means, and said positioning means: Vt.