Abstract:
PROBLEM TO BE SOLVED: To provide an immersion liquid that causes the relative velocity to be maximized, with which a part of a liquid supply apparatus and a substrate can be moved with respect to each other, in an immersion lithography exposure apparatus without collaping meniscus arranged among these components. SOLUTION: In an immersion lithography exposure apparatus for exposing a substrate to radiation beams via an immersion liquid, the pH of the immersion liquid is controlled to within 2 of a pH at which the zeta potential is zero when the immersion liquid is present on the surface of the substrate. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic projection apparatus preventing the existence of bubbles in a liquid through which an emitted projection beam is passed, or taking countermeasures to reduce them. SOLUTION: This is performed, for example, by ensuring that a gap between a substrate and a substrate table is filled with an immersion liquid, or by inducing a local flow from an optical axis toward a radially outward side in the vicinity of the edge of the substrate. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a system for reducing lithographic errors caused by immersion liquid. SOLUTION: A lithography apparatus comprises an illumination system so constituted as to control a radiation beam, a support so constituted as to support a pattern forming device which imparts patterns on a crosssection of the radiation beam to form a patternized radiation beam, a substrate table so constituted as to hold a substrate, a projection system so constituted as to project the patternized radiation beam on the target of the substrate, a liquid supply system so constituted as to fill at least part of a space between a final element of the projection system and the substrate with the liquid, a sealing member so disposed as to substantially enclose the liquid inside the space between the final element of the projection system and the substrate, and an element for controlling and/or compensate evaporation of the immersion liquid from the substrate. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic apparatus capable of at least reducing possibility of mixing of bubbles.SOLUTION: An immersion lithographic apparatus is disclosed. The immersion lithographic apparatus comprises: a fluid handling system for confining 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 for supplying gas whose solubility in the immersion liquid is higher than 5×10mol/kg, at a total pressure of 1 atm and 20°C into a region that adjoins the space.
Abstract:
PROBLEM TO BE SOLVED: To provide a system that reduces lithography errors arising from an immersion liquid.SOLUTION: A lithographic apparatus includes: an illumination system configured to condition a radiation beam; a support constructed to support a patterning device capable of imparting a pattern to the radiation beam in 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 a 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 fluid handling structure for minimizing or preventing the sealing of bubbles within an immersion solution of an immersion lithographic apparatus. SOLUTION: A fluid handling structure is for a lithographic apparatus. At a boundary from a space configured to include an immersion fluid to a region external to the fluid handling structure, the fluid handling structure successively has an extractor having at least one opening arranged in a first line that, in use, is directed towards a substrate and/or a table and a liquid manipulator on a surface that, in use, faces the substrate and/or table to reduce the chance of droplets on the surface from coalescing. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid immersion lithographic apparatus that prevents an adverse effect on pattern image quality due to existence of bubbles in immersion liquid. SOLUTION: The liquid immersion lithographic exposure apparatus minimizes or prevents generation of bubbles in the immersion liquid by reducing a size or a volume of a gap between an object and the top of a substrate table and/or preparing a cover plate covering the gap. Additionally, an actuator for laterally moving the object in a hole in order to reduce the gap between an edge of the object and a side of the hole of the support table when the object and the table are in contact with the liquid, may be prepared. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To reduce or eliminate imaging defects caused by bubbles in an immersion liquid while increasing a table speed.SOLUTION: There is disclosed the immersion lithographic apparatus which includes: a projection system configured to direct a patterned beam of radiation on a substrate supported by a table; a liquid handling system configured to supply and confine the immersion liquid to a space defined between a projection system and the table or a substrate, or both of them; and a controller to control a moving speed of the table relative to liquid handling on the basis of a distance between moving direction switches.
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 apparatus. SOLUTION: In the immersion lithography apparatus, 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 apparatus may further include 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)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To reduce generation of bubbles in an immersion liquid and evaporation of the liquid. SOLUTION: An immersion lithographic apparatus includes a liquid containment structure 12 provided for at least partially defining a space 10 structured to contain a liquid between a projection system PL and a substrate W. A sectional area of the space 10 in a plane parallel to the substrate W is minimized to reduce a traverse of a rim of the substrate W whose image is to be formed (which sometimes brings a content of bubbles in the immersion liquid). The theoretically minimum size is that of a target part TP whose image is to be formed by the projection system PL. In addition, in one embodiment, a shape of a final element of the projection system PL is modified to have a size and/or a shape similar to the target part TP on a cross section parallel to the substrate W. COPYRIGHT: (C)2010,JPO&INPIT