Abstract:
PURPOSE: A substrate table, an immersion lithography apparatus, and a method for manufacturing a device are provided to reduce the generation of defects on images by minimizing bubbles in the immersion lithography apparatus. CONSTITUTION: A pre-set size substrate(W) is contained in a recess(20). The recess includes a supporting region supporting the lower surface of the substrate and an edge. The edge is adjacently arranged to the edge of the substrate. A fluid draining system drains fluid from a gap(26) between the edges of the substrate and the recess. The fluid draining system includes a first duct(32) and a second duct(42) which are open toward the inside gap.
Abstract:
A method of operating a lithographic apparatus is disclosed. The method includes moving a substrate table supporting a substrate relative to a projection system and adjusting the scanning speed between the substrate table and the projection system during imaging of a target within a predefined area at or near an edge of the substrate, or adjusting the stepping speed between adjacent target positions in a predefined area at or near the edge of the substrate, or both. The adjusting the scanning and/or stepping speed may comprise lowering the speed. The projection system is configured to project a patterned beam of radiation on to a target portion of the substrate.
Abstract:
A gas manifold to direct a gas flow between two plates of an optical component of a lithographic apparatus, the gas manifold having an inlet, a diffuser downstream of the inlet, a flow straightener downstream of the inlet, a contractor downstream of the flow straightener, and an outlet downstream of the contractor.
Abstract:
A substrate table for an immersion lithographic apparatus is disclosed having a recess, configured to receive a substrate of a given size, and a fluid extraction system, configured to extract fluid from a gap between the edge of the substrate and the edge of the recess, the fluid extraction system configured such that the rate of flow of fluid extracted from a localized section of the gap is greater than the rate of flow of fluid extracted from another section of the gap.
Abstract:
A table is disclosed in which an opening is provided for the provision of immersion fluid onto a top surface of the table. In an embodiment, there are two such openings. The first of the openings surrounds a substrate support of the table and the second of the openings extends around an outer edge of the table.