Abstract:
PROBLEM TO BE SOLVED: To provide a fluid-handling structure for a lithographic apparatus. SOLUTION: The fluid-handling structure has a plurality of openings, arranged in the form of a straight line, in a plan view. The fluid-handling structure is configured so that the opening is oriented toward an opposed surface, when it is in use; and here, the opposed surface is a substrate and/or a substrate table. The substrate table is configured so as to support the substrate. There is a damper outside the line of the opening. The damper can have a width that changes along the line of the opening. The damper width is defined between the line of the opening and a damper edge part which in opposition thereto. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a system reducing lithography errors arising from the immersion liquid. SOLUTION: A lithographic apparatus includes: an illumination system configured to condition a radiation beam; a support constructed to support a patterning device, the patterning device being capable of imparting the radiation beam with a pattern to its cross-section to form a patterned radiation beam; a substrate table constructed to hold a substrate; a projection system configured to project the patterned radiation beam onto a target portion of the substrate; a liquid supply system configured to at least partly fill a space between a final element of the projection system and the substrate with liquid; a seal member arranged to substantially contain the liquid within the space between the final element of the projection system and the substrate; and elements to control and/or compensate for evaporation of immersion liquid from the substrate. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To prevent the presence of air bubbles in an immersion liquid to cause an adverse effect on the quality of a pattern image in an immersion lithography. SOLUTION: In the immersion lithography, the formation of air bubbles in the immersion liquid can be minimized or prevented by reducing the size of a gap or a gap region between an object and a substrate table and/or providing a cover plate covering the gap. The immersion lithography may further comprise an actuator which laterally moves the object in a hole of the support table to reduce a gap between an end of the object and a side of the hole when the object is in contact with a liquid. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide immersion lithography equipment suitable for preventing or reducing generation of bubbles by preventing bubbles from leaking to a radiation beam passage through one or more gaps in a substrate table, or by extracting bubbles possibly generated in the gap. SOLUTION: The lithography equipment is arranged to project an image of desired pattern onto a substrate W held on a substrate table WT through liquid. A gap 22 exists in the surface of the substrate table between the substrate table and the outer edge of the substrate, or between the substrate table and other component touching the liquid during normal use. The lithography equipment is provided, in the gap, with a bubble holding device arranged to hold a bubble 24 possibly generated in the gap. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a system that reduces lithography errors caused by immersion liquid.SOLUTION: A lithographic apparatus comprises: an illumination system configured to adjust a radiation beam; a support body configured to support a pattern forming device capable of imparting a pattern to the radiation beam in a cross section of the radiation beam to form a pattern formed radiation beam; a substrate table configured to hold a substrate; a projection system configured to project the pattern formed radiation beam onto a target portion of the substrate; a liquid supply system configured to fill at least a part of space between a final element of the projection system and the substrate with liquid; a seal member arranged to substantially contain the liquid within the space between the final element of the projection system and the substrate; and elements to control and/or compensate for evaporation of the immersion liquid from the substrate.
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic apparatus in which the likelihood of bubble inclusion is at least reduced.SOLUTION: A fluid handling structure for a lithographic apparatus comprises at a boundary from a space configured to contain immersion fluid to a region external to the fluid handling structure: meniscus pinning features to resist passage of immersion fluid in a radially outward direction from the space; a plurality of gas supply openings in a linear array; and at least one gas recovery opening placed radially outside of the plurality of gas supply openings in a linear array. The plurality of gas supply openings at least partly surround the meniscus pinning features, and are placed radially outside of the meniscus pinning features.
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 preferably provide a lithographic apparatus that prevents bubble from entering a projection beam when imaging. SOLUTION: A meniscus fixation device formed of a lower plate 12a of a fluid handling structure of an immersion lithographic projection apparatus has a plurality of openings 50 forming concentric circles, through which liquid and air from the environment are extracted, the plurality of openings 50 have a middle size whose diameter is about 75 to about 150 μm. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic apparatus capable of at least reducing the possibility of mixing of bubbles. SOLUTION: An immersion lithographic apparatus is disclosed. The immersion lithographic apparatus includes a fluid handling system which confines immersion liquid to be within a local space between a final element of a projection system and a substrate and/or a table, and a gas supply device which supplies gas of which solubility in the immersion liquid is higher than 5x10 -3 mol/kg, at a total pressure of 1 atm and 20°C into a region that adjoins the space. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid immersion lithographic apparatus which reduces bubbles in an immersion liquid to prevent an adverse effect on pattern image quality. SOLUTION: The liquid immersion lithographic apparatus is provided to minimize bubbles generated or to prevent bubbles from being generated in the immersion liquid by reducing sizes or volumes of gaps between a target object and a substrate support table, and their upper structures, in the liquid immersion lithographic apparatus, and/or preparing a cover plate covering the gaps. The liquid immersion lithographic apparatus may further include an actuator which laterally moves the target object in a hole of the substrate support table to reduce a gap between a peripheral end of the target object and an inner side of the hole when the target object is in contact with the immersion liquid. COPYRIGHT: (C)2011,JPO&INPIT