Patent ID: 7670754
Filing Date: 2010-03-02
Classification: G03F,H01L,Y10S

Abstract:
1. An exposure apparatus for executing an exposure of a substrate to light via a mask, the apparatus comprising: a booth configured to store the mask in an atmospheric pressure; a processing chamber in which the exposure is executed in a first vacuum pressure; a vacuum chamber arranged between the booth and the processing chamber and configured to store the mask at a second vacuum pressure between 0.1 Pa and 100 Pa, the second vacuum pressure being higher than the first vacuum pressure, wherein the vacuum chamber includes a remover configured to remove a particle that adheres to the mask, and an absorber that includes a wire net of which a charge is alternately switched between plus and minus to adsorb the particle removed by the remover; a first load lock chamber arranged between the booth and the vacuum chamber, through which the mask is transferred, in which the atmospheric pressure and the second vacuum pressure are replaceable; and a second load lock chamber arranged between the vacuum chamber and the processing chamber, through which the mask is transferred, in which the second vacuum pressure and the first vacuum pressure are replaceable.