Patent ID: 7719660
Filing Date: 2010-05-18
Classification: G03F

Abstract:
1. An exposure apparatus comprising: a projection optical system for projecting a pattern of a mask onto an object using a light with wavelength of 20 nm or less from a light source; a first accommodating part for accommodating the projection optical system; a second accommodating part for accommodating one of the mask or the object, said first and second accommodating parts having different pressures; and a connecting part for defining an opening part that connects said first and second accommodating parts to each other, wherein an equation Ps/Po=1000 is met, where Po is the pressure of the first accommodating part, and Ps is the pressure of the second accommodating part, wherein said exposure apparatus transfers the pattern onto the object by scanning the mask and the object in a scan direction, wherein said connecting part has a convex section that projects toward the one of the mask or the object which is accommodated by said second accommodating part, and the convex section includes a projecting part that bends in the scan direction, and defines the opening part, and wherein said opening part has an area of 125 mm