Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic apparatus in which the likelihood of bubble inclusion in an immersion liquid is at least reduced.SOLUTION: A fluid handling structure for a lithographic apparatus comprises at a boundary of a space configured to contain immersion fluid to a region external to the fluid handling structure: a meniscus pinning feature to resist passage of immersion fluid in a radially outward direction from the space; a gas supply opening at least partly surrounding and radially outward of the meniscus pinning feature; and optionally a gas recovery opening radially outward of the gas supply opening. The gas supply opening, or the gas recovery opening, or both the gas supply opening and the gas recovery opening, has an open area per meter length which has a variation around the space.
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 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 fluid handling system in which a vibration produced by two phase extraction is reduced or eliminated. SOLUTION: A liquid-immersion lithography usually is equipped with a fluid handling system. The handling system generally has a two phase fluid extraction system which removes a mixture of a gas and a liquid from a predetermined place. Since the extract fluid contains two phases, the pressure in the extract system varies sometimes. It is likely that the pressure variation passes through the liquid-immersion liquid to cause an incorrect exposing light. A buffer chamber can be used to reduce the pressure variation in the extract system. The buffer chamber may be connected to the fluid extract system in order to provide a fixed volume of gas to reduce the pressure variation. Substitutively or additionally, a flexible wall portion may be provided to somewhere in the fluid extract system. The flexible wall portion may respond to the pressure variation in the fluid extract system to change its shape. The change of the shape may be a help when the flexible wall portion reduces or eliminates the pressure variation. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
A fluid handling structure for a lithographic apparatus configured to contain immersion fluid to a region, the fluid handling structure having, at a boundary of a space: at least one gas knife opening in a radially outward direction of the space; and at least one gas supply opening in the radially outward direction of the at least gas knife opening relative to the space. The gas knife opening and the gas supply opening both provide substantially pure CO2 gas so as to provide a substantially pure CO2 gas environment adjacent to, and radially outward of, the space.
Abstract:
A lithographic apparatus includes a substrate table, a post-exposure handling module, a substrate handling robot and a drying station. The substrate table is configured to support a substrate for an exposure process. The post-exposure handling module is configured to handle the substrate post-exposure. The substrate handling robot is configured to transfer the substrate from the substrate table along a substrate unloading path into the post-exposure handling module. The drying station is configured to actively remove liquid from a surface of the substrate. The drying station is located in the substrate unloading path. The drying station is located in the post-exposure handling module. The post-exposure handling module may be a substrate handler.