Patents by Inventor Yusaku Uehara

Yusaku Uehara has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9304385
    Abstract: An exposure method that uses a substrate (M) held by a holding member (28) to perform exposure processing, comprising a holding process, which holds a prescribed region (AR3) of the substrate as the holding region by means of the holding member, and a deformation process, which selectively deforms one side of the holding region of the substrate held by the holding process with respect to the other side. According to the present invention, a prescribed region of the substrate is held as a holding region by means of a holding member, and one side of the holding region of said held substrate is selectively deformed with respect to the other side, so it is possible to selectively eliminate the nonlinear deformation components attributable to holding of the substrate with respect to one side from among the two sides of the substrate using the holding region as a reference.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: April 5, 2016
    Assignee: Nikon Corporation
    Inventors: Alton H. Phillips, Douglas C. Watson, Hiromitsu Yoshimoto, Yusaku Uehara
  • Patent number: 8253924
    Abstract: An exposure apparatus is provided with an optical system including a liquid, a sensor system for acquiring energy information of an energy beam which is incident on the liquid, and a controller which predicts variation of optical properties of the optical system including the liquid due to energy absorption of the liquid based on the energy information acquired using the sensor system and controls exposure operation with respect to an object based on the prediction results. According to the exposure apparatus, exposure operation without being influenced by the variation of the optical properties of the optical system including the liquid due to the energy absorption of the liquid becomes possible.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: August 28, 2012
    Assignee: Nikon Corporation
    Inventors: Yusaku Uehara, Kousuke Suzuki, Katsushi Nakano, Yasuhiro Omura
  • Patent number: 7817249
    Abstract: An exposure method which includes illuminating a first object formed with a pattern to be transferred with a first light beam to expose a second object with the first light beam through the first object and a projection optical system; and irradiating the first object and at least one portion of the projection optical system with a second light beam having a wavelength range that is different from that of the first light beam to correct image forming characteristics of the projection optical system.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: October 19, 2010
    Assignee: Nikon Corporation
    Inventor: Yusaku Uehara
  • Publication number: 20100186942
    Abstract: Methods and apparatus for cooling a reticle are disclosed. According to one aspect of the present invention, an apparatus for providing top side cooling to a reticle includes a heat exchanger arrangement and an actuator. The heat exchanger arrangement includes a first surface arranged to facilitate heat transfer between the reticle and the heat exchanger arrangement. The heat transfer provides cooling to at least some portions of the reticle. The actuator positions the first surface of the heat exchanger arrangement at a distance over the reticle.
    Type: Application
    Filed: December 21, 2009
    Publication date: July 29, 2010
    Inventors: Alton H. Phillips, Douglas C. Watson, Hiromitsu Yoshimoto, Noriya Kato, Yusaku Uehara, Leonard Wai Fung Kho
  • Publication number: 20100097588
    Abstract: An exposure method that uses a substrate (M) held by a holding member (28) to perform exposure processing, comprising a holding process, which holds a prescribed region (AR3) of the substrate as the holding region by means of the holding member, and a deformation process, which selectively deforms one side of the holding region of the substrate held by the holding process with respect to the other side. According to the present invention, a prescribed region of the substrate is held as a holding region by means of a holding member, and one side of the holding region of said held substrate is selectively deformed with respect to the other side, so it is possible to selectively eliminate the nonlinear deformation components attributable to holding of the substrate with respect to one side from among the two sides of the substrate using the holding region as a reference.
    Type: Application
    Filed: September 16, 2009
    Publication date: April 22, 2010
    Inventors: Alton H. Phillips, Douglas C. Watson, Hiromitsu Yoshimoto, Yusaku Uehara
  • Publication number: 20080218714
    Abstract: An exposure apparatus is provided with an optical system including a liquid, a sensor system for acquiring energy information of an energy beam which is incident on the liquid, and a controller which predicts variation of optical properties of the optical system including the liquid due to energy absorption of the liquid based on the energy information acquired using the sensor system and controls exposure operation with respect to an object based on the prediction results. According to the exposure apparatus, exposure operation without being influenced by the variation of the optical properties of the optical system including the liquid due to the energy absorption of the liquid becomes possible.
    Type: Application
    Filed: May 23, 2006
    Publication date: September 11, 2008
    Applicant: Nikon Corporation
    Inventors: Yusaku Uehara, Kousuke Suzuki, Katsushi Nakano, Yasuhiro Omura
  • Publication number: 20080204682
    Abstract: By the combination of adjusting optical properties of an optical system by an irradiation unit irradiating non-exposure light on an optical element, which is movable, and adjusting the optical properties of the optical system with an optical properties adjustment unit by moving the optical element, for example, the change in the optical properties of the optical system caused by the temperature distribution of the optical elements whose center is at a position eccentric from the optical axis is corrected. Further, under a dipole illumination condition, in order to make optical properties of an optical system caused by non-rotational symmetry temperature distribution of optical elements in the vicinity of pupils into optical properties that can be corrected more easily by an optical properties adjustment unit, an irradiation unit irradiates non-exposure light on an optical element, which makes the optical element have a rotational symmetry temperature distribution.
    Type: Application
    Filed: June 26, 2006
    Publication date: August 28, 2008
    Applicant: Nikon Corporation
    Inventors: Yusaku Uehara, Kiyoshi Uchikawa, Satoshi Ishiyama
  • Publication number: 20060244940
    Abstract: An exposure method which comprises illuminating a first object formed with a pattern to be transferred with a first light beam to expose a second object with the first light beam through the first object and a projection optical system; and irradiating the first object and at least one portion of the projection optical system with a second light beam having a wavelength range that is different from that of the first light beam to correct image forming characteristics of the projection optical system is disclosed.
    Type: Application
    Filed: February 28, 2006
    Publication date: November 2, 2006
    Applicant: NIKON CORPORATION
    Inventor: Yusaku Uehara