摘要:
A gas curtain device is employed to deflect debris that is generated by an extreme ultraviolet and soft x-ray radiation discharge source such as an electric discharge plasma source. The gas curtain device projects a stream of gas over the path of the radiation to deflect debris particles into a direction that is different from that of the path of the radiation. The gas curtain can be employed to prevent debris accumulation on the optics used in photolithography.
摘要:
PROBLEM TO BE SOLVED: To provide an immersion lithographic projection apparatus. SOLUTION: The immersion lithographic projection apparatus is disclosed in which immersion liquid is provided between the last element of a projection system and a substrate. The use of both hydrophobic and hydrophilic layers on various elements of the apparatus is provided to help prevent formation of bubbles in the immersion liquid and to help reduce residue on the elements after being in contact with the immersion liquid. COPYRIGHT: (C)2010,JPO&INPIT
摘要:
An immersion lithographic projection apparatus is disclosed in which liquid is provided between a projection system of the apparatus and a substrate. The use of both liquidphobic and liquidphilic layers on various elements of the apparatus is provided to help prevent formation of bubbles in the liquid and to help reduce residue on the elements after being in contact with the liquid.
摘要:
PROBLEM TO BE SOLVED: To provide a reflective lighting technology that reduces an adhesion amount of particulates such as debris to the reflective surface. SOLUTION: A lighting optical device for illuminating a surface being irradiated with exposure light EL includes a lighting optical system ILS having a curved mirror 24 and a concave surface mirror 25 and forming a position substantially conjugate to the surface being irradiated between the curved mirror 24 and the concave surface mirror 25, and a second aperture board 5 separating a space B with the curved mirror 24 and a space C with the concave surface mirror 25 to different vacuum environments or decompression environments, and having an opening 5a through which the exposure light EL passes, wherein the opening 5a is arranged at a position where the cross section of the exposure light EL is smallest or in the vicinity thereof. The quantity of passing particulates such as debris can be reduced for the subsequent optical system. COPYRIGHT: (C)2009,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a lithography apparatus capable of preventing the thermal fluctuation in an optical path, for stabilizing measurement with an interferometer system. SOLUTION: A gas shower 1 of an optical device adjusts the optical path of at least one interferometer system IF. The gas shower 1 includes a gas distribution chamber 2 comprising a shower exit side that supplies gas to the optical path OP. The gas distribution chamber 2 is so configured as to spray the gas to the optical path OP. The gas distribution chamber 2 includes a substantially sharp tapered tip. COPYRIGHT: (C)2007,JPO&INPIT
摘要:
An DPP EUV source is disclosed which may comprise a debris mitigation apparatus employing a metal halogen gas producing a metal halide from debris exiting the plasma. The EUV source may have a debris shield that may comprise a plurality of curvilinear shield members having inner and outer surfaces connected by light passages aligned to a focal point, which shield members may be alternated with open spaces between them and may have surfaces that form a circle in one axis of rotation and an ellipse in another. The electrodes may be supplied with a discharge pulse shaped to produce a modest current during the axial run out phase of the discharge and a peak occurring during the radial compression phase of the discharge. The light source may comprise a turbomolecular pump having an inlet connected to the generation chamber and operable to preferentially pump more of the source gas than the buffer gas from the chamber. The source may comprise a tuned electrically conductive electrode comprising: a differentially doped ceramic material doped in a first region to at least select electrical conductivity and in a second region at least to select thermal conductivity. The first region may be at or near the outer surface of the electrode structure and the ceramic material may be SiC or alumina and the dopant is BN or a metal oxide, including SiO or TiO2. The source may comprise a moveable electrode assembly mount operative to move the electrode assembly mount from a replacement position to an operating position, with the moveable mount on a bellows. The source may have a temperature control mechanism operatively connected to the collector and operative to regulate the temperature of the respective shell members to maintain a temperature related geometry optimizing the glancing angle of incidence reflections from the respective shell members, or a mechanical positioner to position the shell members. The shells may be biased with a voltage. The debris shield may be fabricated using off focus laser radiation. The anode may be cooled with a hollow interior defining two coolant passages or porous metal defining the passages. The debris shield may be formed of pluralities of large, intermediate and small fins attached either to a mounting ring or hub or to each other with interlocking tabs that provide uniform separation and strengthening and do not block any significant amount of light.