Patents Examined by Della J Rutledge
  • Patent number: 7554648
    Abstract: Blind devices and related methods for lithography systems are described. An exemplary system has a vacuum chamber with first and second chamber portions. In a member between the chambers is defined an exposure aperture, relative to which a reticle stage in the first chamber portion moves a reticle. A gas enters the first chamber portion and establishes a thermophoretic condition relative to the reticle or portion thereof. A fixed-blind-aperture assembly, movable relative to the exposure aperture and the reticle to exposure and non-exposure positions, defines an illumination aperture through which light from the second chamber portion and gas from the first chamber portion pass when the fixed-blind-aperture assembly is in the exposure position. A gas-passage aperture in the member conducts the gas, passing through the illumination aperture, from the first chamber portion to the second chamber portion when the fixed-blind-aperture assembly is in the non-exposure position.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: June 30, 2009
    Assignee: Nikon Corporation
    Inventor: Michael R. Sogard
  • Patent number: 7548302
    Abstract: A method of transferring an image of a pattern layout onto a surface of a substrate including selecting a first illumination profile for a first area of the pattern layout and a second illumination profile for a second area of the pattern layout; switching illumination profile during transfer of the image of the pattern layout such that the first area of the pattern layout is illuminated with the first illumination profile and the second area is illuminated with the second illumination profile; and projecting an image of the illuminated first and second areas onto the surface of the substrate.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: June 16, 2009
    Assignee: ASML Netherlands B.V.
    Inventors: Arno Jan Bleeker, Donis George Flagello, Robert John Socha, James Sherwood Greeneich, Kars Zeger Troost
  • Patent number: 7510341
    Abstract: A temperature calibration method for a baking apparatus comprising forming a photoresist film onto a substrate, forming a latent image of a dose monitor mark onto the photoresist film, preparing baking processing apparatuses, baking the substrate or another substrate by temperature settings performed every repeat of a series of the forming the resist film and the forming the latent image with each prepared baking apparatus, cooling the baking-processed substrate, measuring a length of the latent image of the dose monitor mark after the cooling or a length of a dose monitor mark which being obtained by developing the resist film, determining relationship between a temperature setting and an effective dose in advance, and calibrating temperature settings corresponding to the each baking processing apparatus to be obtained a predetermined effective dose on the basis of the determining relationship and the measured length corresponding to the each baking processing apparatus.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: March 31, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kei Hayasaki, Daizo Mutoh, Masafumi Asano, Tadahito Fujisawa, Tsuyoshi Shibata, Shinichi Ito
  • Patent number: 7505117
    Abstract: A polarizing element is disclosed which includes a smooth glass substrate and a polarization layer formed thereon, the polarization layer having polarization characteristics for the incident light. The polarization layer is made of a carbon-based substance including carbon atoms. The carbon atoms are continuously connected via carbon-carbon double bonds having [pi] electron clouds. The [pi] electron clouds have average continuous distance of 100 nm or more in a longitudinal direction and have an average continuous distance less than 50 nm in a transverse direction. The carbon-based substance is formed in such a way that a plurality of the [pi] electron clouds have longitudinal directions which are in parallel along the glass-substrate surface.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: March 17, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroshi Nomura, Koji Asakawa, Yuichi Motoi
  • Patent number: 7502095
    Abstract: A lithographic apparatus includes a patterning device for patterning a beam of radiation, a projection system for projecting the patterned beam of radiation onto a substrate, a gas purged sealing aperture extending between different zones of the apparatus, and a gas supply arrangement for supplying a mixture of at least argon and hydrogen to the sealing aperture.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: March 10, 2009
    Assignee: ASML Netherlands B.V.
    Inventors: Johannes Henricus Wilhelmus Jacobs, Barrie Dudley Brewster, Robert Gordon Livesey
  • Patent number: 7495744
    Abstract: When exposing a substrate by projecting a pattern image onto the substrate via a projection optical system (PL) and liquid (1), an exposure method includes a determination of a liquid immersion condition to be performed to the substrate, such as a liquid type, depending on a film (SP) formed as a liquid contact surface of the substrate. The liquid type is selected by switching between a first liquid supply section (11) and a third liquid supply section (21). It is possible to smoothly perform immersion exposure for the substrate (P) on which a different photo-resist layer is provided.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: February 24, 2009
    Assignee: Nikon Corporation
    Inventor: Hiroyuki Nagaksaka
  • Patent number: 7486377
    Abstract: A developing method is used for subjecting a light-exposed resist film disposed on a wafer W to a developing process by a developing solution and a rinsing process by a rinsing liquid. In a state where the resist film on the wafer W is wet with the developing solution or rinsing liquid before a drying process is performed on the wafer W, a chemical liquid (curing chemical liquid), which contains a resist curing aid contributory to curing of a resist film remaining on the wafer W, is supplied onto a surface of the wafer W. Then, ultraviolet rays are radiated onto a surface of the wafer to cure a resist film remaining on the wafer W by a synergistic effect of the resist curing aid and the ultraviolet rays thus radiated, so as to prevent pattern fall.
    Type: Grant
    Filed: November 26, 2004
    Date of Patent: February 3, 2009
    Assignee: Tokyo Electron Limited
    Inventors: Junichi Kitano, Osamu Miyahara, Shinya Wakamizu
  • Patent number: 7486383
    Abstract: A direct exposure apparatus having a light source for projecting light onto an exposure target or, more specifically, an exposure target substrate, comprises: measuring means for measuring the illuminance distribution of light on an area corresponding to the exposure surface of the exposure target substrate; and control means for controlling, based on the measurement result supplied from the measuring means, the light source so that the intended illuminance distribution can be obtained.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: February 3, 2009
    Assignee: Shinko Electric Industries Co., Ltd.
    Inventors: Kazunari Sekigawa, Hiroaki Samizu, Takahiro Inoue
  • Patent number: 7483118
    Abstract: A lithographic projection apparatus is disclosed where at least part of a space between a projection system of the apparatus and a substrate is filled with a liquid by a liquid supply system. The projection system is separated into two separate physical parts. With substantially no direct connection between the two parts of the projection system, vibrations induced in a first of the two parts by coupling of forces through the liquid filling the space when the substrate moves relative to the liquid supply system affects substantially only the first part of the projection system and not the other second part.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: January 27, 2009
    Assignee: ASML Netherlands B.V.
    Inventor: Johannes Catharinus Hubertus Mulkens
  • Patent number: 7483123
    Abstract: With respect to a substrate conveyor apparatus that, being a substrate conveyor apparatus that carries substrate on which patterns are formed, carries the substrate in a state protected by a protective cover when the substrate is not used, a substrate conveyor apparatus having a cover protection means that covers the inner surface of the protective cover when the substrate is used.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: January 27, 2009
    Assignee: Nikon Corporation
    Inventor: Noriyuki Hirayanagi
  • Patent number: 7483119
    Abstract: In exposing substrate by projecting an image of a pattern onto substrate via projection optical system and liquid, side surface and underside surface of substrate are applied with liquid-repellent treatment. By such a configuration, an exposure method by which when exposing edge areas of the substrate, the exposure can be performed in a condition that a liquid immersion region is formed well and that flowing out of the liquid to the outside of the substrate stage are prevented is provided.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: January 27, 2009
    Assignee: Nikon Corporation
    Inventors: Soichi Owa, Nobutaka Magome, Shigeru Hirukawa, Yoshihiko Kudo, Jiro Inoue, Hiroyuki Nagasaka
  • Patent number: 7474377
    Abstract: A coating and developing system for enabling maintenance of an exposure system combined therewith. The system carries a substrate, delivered to a carrier handling block, to a processing block to form a film thereon using a coating block included in the processing block. The substrate is carried through an interface block to the exposure system, the exposed substrate is processed by a developing process using a developing block included in the processing block and the processed substrate is returned to the carrier handling block. A direct carrying means is superposed on the coating block and the developing block to carry a substrate having a surface coated with a film from the carrier handling block directly to the interface block. A test substrate can be carried to the exposure system to inspect the condition of the exposure system even where the coating and developing blocks are under maintenance work.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: January 6, 2009
    Assignee: Tokyo Electron Limited
    Inventors: Nobuaki Matsuoka, Shinichi Hayashi, Yasushi Hayashida
  • Patent number: 7471371
    Abstract: This exposure system projects a pattern image onto a substrate via a projection optical system and a liquid to expose the substrate, with a space between the projection optical system and the substrate filled with the liquid. The exposure system is provided with a vaporization preventing unit for preventing the vaporization of the liquid.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: December 30, 2008
    Assignee: Nikon Corporation
    Inventor: Masaomi Kameyama
  • Patent number: 7468781
    Abstract: An exposure apparatus includes an illumination optical system that includes an optical integrator for forming a secondary light source from the light, and a variable stop arranged at or near a position where the secondary light source is formed, the diameter variable stop that defines a NA of the illumination optical system, a projection optical system that includes an aperture stop arranged at a position substantially optically conjugate with the variable stop, the aperture stop defining a numerical aperture of the projection optical system, and a controller for controlling the aperture diameter of the variable stop as the aperture diameter varies so that an image of the secondary light source can fall within the aperture diameter of the aperture stop.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: December 23, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takahisa Shiozawa
  • Patent number: 7466394
    Abstract: A lithographic apparatus comprising an array of individually controllable elements that modulates a beam of radiation and a projection system that projects the modulated beam onto the substrate. The individually controllable elements are provided with a compensation feature that is arranged to provide compensation radiation that substantially or at least partially cancels out unwanted radiation, such that the unwanted radiation is not projected by the projection system onto the substrate.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: December 16, 2008
    Assignee: ASML Netherlands B.V.
    Inventors: Kars Zeger Troost, Johannes Jacobus Matheus Baselmans
  • Patent number: 7463330
    Abstract: In immersion lithography after exposure of a substrate is complete, a detector is used to detect any residual liquid remaining on the substrate and/or substrate table.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: December 9, 2008
    Assignee: ASML Netherlands B.V.
    Inventors: Bob Streefkerk, Johannes Jacobus Matheus Baselmans, Sjoerd Nicolaas Lambertus Donders, Christiaan Alexander Hoogendam, Jeroen Johannes Sophia Maria Mertens, Johannes Catharinus Hubertus Mulkens
  • Patent number: 7463338
    Abstract: A container is adapted to receive a mask blank having a resist film and includes a container body having an upper opening and a cap put on the container body. The container body has an opening edge provided with an annular elastic member made of polyolefin elastomer or the like and extending throughout entire circumference. When the cap is put on the container body, the elastic member is interposed at a joint portion between the cap and the container body to hermetically seal the container.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: December 9, 2008
    Assignee: Hoya Corporation
    Inventor: Akinori Kurikawa
  • Patent number: 7460210
    Abstract: An auto focus system includes a stage on which a substrate is mounted, light sources that irradiate the substrate with a plurality of focus beams directed towards the substrate at different angles, sensors that detect the focus beams reflected from the substrate, and a controller that determines the relative location of a surface of the substrate according to the locations at which the focus beams are detected by the sensors and positions the substrate accordingly. To this end, the controller performs calculations that are free from the influence of variations in the refractive index of the medium through which the focus beams propagate to the surface of the substrate. Therefore, the autofocus process is carried out with a high degree of precision.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: December 2, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Dong-Woon Park
  • Patent number: 7460213
    Abstract: An alignment apparatus includes driving means having a movable element and a stator, a measurement unit which measures a position of a moving member moved by the driving means using measurement light, and a discharging unit to discharge gas existing in an optical path of the measurement light. The discharging unit is provided to the stator.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: December 2, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroyuki Maruyama
  • Patent number: 7456931
    Abstract: A method of optimizing adjustable settings of adjustable elements of a projection system in a lithographic apparatus is disclosed that includes determining an object spectrum for a pattern and an illumination arrangement, determining a symmetry of the object spectrum, constructing a merit function for a wavefront in a pupil plane of the projection system with the settings of the adjustable elements as variables with reference to the symmetry, and optimizing the merit function.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: November 25, 2008
    Assignee: ASML Netherlands B.V.
    Inventors: Laurentius Cornelius De Winter, Jozef Maria Finders, Maria Johanna Agnes Rubingh