Patent ID: 8964166
Filing Date: 2015-02-24
Classification: G03F

Abstract:
1. A stage device comprising: a chamber forming an inner space; a mobile member in the inner space and having a retaining section, which is configured to retain a mask illuminated with exposure light, the mobile member being configured to move along a predetermined plane including an illumination position of the exposure light when the retaining section retains the mask; and an intake structure in the inner space, the intake structure being configured to move due to the movement of the mobile member and having an intake port, a first gas passage, and a supply port, the intake port opening to the inner space, the intake port being configured to receive gas from the inner space at a periphery of the mask retained by the retaining section when the intake structure is moved, the first gas passage extending between the intake port and the supply port and through which the gas taken via the intake port flows, the flow of the gas being produced by the movement of the intake structure due to the movement of the mobile member, the supply port being configured to supply gas flowing from the first gas passage to a surface of the mask retained on the retaining section.