Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic apparatus, a method of controlling the same, and a device manufacturing method, wherein defects of imaging are reduced or eliminated. SOLUTION: The method includes the steps of: 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, and/or adjusting the stepping speed between adjacent target positions in a predefined area at or near the edge of the substrate. The step of adjusting the scanning and/or stepping speed may comprise lowering the speed. The projection system is configured to project a patterned beam of radiation onto a target portion of the substrate. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To reduce or remove the risk of focusing defects, and to maintain or increase throughput. SOLUTION: A liquid handling structure for a lithographic apparatus comprises a droplet controller configured to allow a droplet of immersion liquid to be lost from the handling structure and to prevent the droplet from colliding with the meniscus of the confined immersion liquid. The droplet controller may comprise gas knives arranged to overlap to block an incoming droplet. There may be extraction holes lined up with gaps between gas knives to extract liquid that passes through the gap. A droplet is allowed to escape through the gaps. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a fluid handling system that maintains a liquid in a space between a final element of a projection system and a substrate. SOLUTION: The fluid handling structure for a lithographic apparatus includes, at a boundary between the space in which an immersion fluid is confined and an external region of the fluid handling structure: a first gas knife device having a plurality of openings arranged in a first column and an aperture in a second column; and a second gas knife device having one or a plurality of openings in a third array and an aperture in a fourth column. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a fluid handling device which is suitable to immersion fluid containing hydrocarbon with high refractive index of an immersion lithographic apparatus. SOLUTION: The fluid handling device comprises: at least one body 12 with a surface facing a space for fluid; a plurality of openings 140 for the flow of fluid therethrough defined in the surface; at least one barrier 170 moveable relative to the plurality of openings 140 for selectively allowing or preventing the flow of fluid through selected openings 140 of the plurality of openings 140. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an environment control means for a buffer immersion device. SOLUTION: A system in which immersion fluid containing liquid is provided from the outside to isolate an environmental chamber of an immersion lithography device is disclosed. Furthermore, a system which uses a transducer which transmits and/or receives an acoustic signal to measure a flow rate and/or vapor concentration of gas is disclosed. COPYRIGHT: (C)2009,JPO&INPIT
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.