Patents by Inventor Akinori Shirato

Akinori Shirato 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: 11392048
    Abstract: A liquid crystal exposure apparatus that irradiates a substrate held by a substrate holder which moves along an XY plane with an illumination light via an optical system while the substrate holder moves in the X-axis direction, has; a scale measured based on movement of the substrate holder in the X-axis direction, heads that measure the scale while relatively moving in the X-axis direction with respect to the scale, a plurality of scales arranged at mutually different positions in the X-axis direction measured based on movement of the substrate holder in the Y-axis direction, and a plurality of heads provided for each scale that measures the scales while relatively moving in the Y-axis direction with respect to the scales based on movement of the substrate in the Y-axis direction.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: July 19, 2022
    Assignee: NIKON CORPORATION
    Inventor: Akinori Shirato
  • Patent number: 11187987
    Abstract: A control system, of a plurality of heads, acquires grating correction information related to at least two of scales in a first grating group and scales in a second grating group, based on position information of a movable body measured using at least four heads irradiating measurement beams on at least two of the scales and scales. The grating correction information is used to control movement of the movable body using at least three heads irradiating at least two of the scales and scales.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: November 30, 2021
    Assignee: NIKON CORPORATION
    Inventors: Akinori Shirato, Takashi Shibuya
  • Patent number: 11169448
    Abstract: A substrate stage apparatus provided with: a substrate holder that can be moved in a plane including an X-axis and a Y-axis; a head unit that can be moved synchronously with the substrate holder along the Y-axis; an encoder system for measuring substrate position, the system including a scale disposed on the substrate holder, and heads disposed on the head unit, and acquiring the X-axis direction and the Y-axis direction position information of the substrate holder on the basis of the output of the heads; an encoder system for measuring head-unit position, the system acquiring the Y-axis direction position information of the head unit; and a position control system that controls the position of the substrate holder within the XY plane on the basis of the output of the encoder system for measuring substrate position and the encoder system for measuring head-unit position.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: November 9, 2021
    Assignee: NIKON CORPORATION
    Inventor: Akinori Shirato
  • Patent number: 11086236
    Abstract: In an exposure apparatus, on a substrate holder (34), a plurality of grating areas (RG) is arranged mutually apart in the X-axis direction, and a plurality of heads (66a to 66d) that irradiates a measurement beam with respect to the grating area and can move in the Y-axis direction is arranged outside of the substrate holder. A control system controls movement of the substrate holder in at least directions of three degrees of freedom within an XY plane, based on measurement information of at least three heads of the plurality of heads facing the grating area and measurement information of a measurement device that measures position information of the plurality of heads. The measurement beam of each of the plurality of heads, during the movement of substrate holder in the X-axis direction, moves off of one of the plurality of grating areas and switches to another adjacent grating area.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: August 10, 2021
    Assignee: NIKON CORPORATION
    Inventors: Akinori Shirato, Takashi Shibuya
  • Publication number: 20200363730
    Abstract: A control system controls a drive system of a substrate holder, based on correction information to compensate for measurement error of a measurement system including an encoder system that occurs due to movement of at least one of a plurality of grating areas (scale), a plurality of heads and a substrate holder, and position information measured by the measurement system, and a measurement beam from a head of each of the plurality of heads moves off from one of the plurality of grating areas and switches to another adjacent grating area, during the movement of the substrate holder in the X-axis direction.
    Type: Application
    Filed: June 26, 2020
    Publication date: November 19, 2020
    Applicant: NIKON CORPORATION
    Inventors: Akinori SHIRATO, Takashi SHIBUYA
  • Publication number: 20200326638
    Abstract: In an exposure apparatus, on a substrate holder (34), a plurality of grating areas (RG) is arranged mutually apart in the X-axis direction, and a plurality of heads (66a to 66d) that irradiates a measurement beam with respect to the grating area and can move in the Y-axis direction is arranged outside of the substrate holder. A control system controls movement of the substrate holder in at least directions of three degrees of freedom within an XY plane, based on measurement information of at least three heads of the plurality of heads facing the grating area and measurement information of a measurement device that measures position information of the plurality of heads. The measurement beam of each of the plurality of heads, during the movement of substrate holder in the X-axis direction, moves off of one of the plurality of grating areas and switches to another adjacent grating area.
    Type: Application
    Filed: June 25, 2020
    Publication date: October 15, 2020
    Applicant: NIKON CORPORATION
    Inventors: Akinori SHIRATO, Takashi SHIBUYA
  • Publication number: 20200319564
    Abstract: A substrate stage apparatus provided with: a substrate holder that can be moved in a plane including an X-axis and a Y-axis; a head unit that can be moved synchronously with the substrate holder along the Y-axis; an encoder system for measuring substrate position, the system including a scale disposed on the substrate holder, and heads disposed on the head unit, and acquiring the X-axis direction and the Y-axis direction position information of the substrate holder on the basis of the output of the heads; an encoder system for measuring head-unit position, the system acquiring the Y-axis direction position information of the head unit; and a position control system that controls the position of the substrate holder within the XY plane on the basis of the output of the encoder system for measuring substrate position and the encoder system for measuring head-unit position.
    Type: Application
    Filed: June 19, 2020
    Publication date: October 8, 2020
    Applicant: NIKON CORPORATION
    Inventor: Akinori SHIRATO
  • Publication number: 20200264516
    Abstract: A control system, of a plurality of heads, acquires grating correction information related to at least two of scales in a first grating group and scales in a second grating group, based on position information of a movable body measured using at least four heads irradiating measurement beams on at least two of the scales and scales. The grating correction information is used to control movement of the movable body using at least three heads irradiating at least two of the scales and scales.
    Type: Application
    Filed: April 29, 2020
    Publication date: August 20, 2020
    Applicant: NIKON CORPORATION
    Inventors: Akinori SHIRATO, Takashi SHIBUYA
  • Patent number: 10732517
    Abstract: In an exposure apparatus, on a substrate holder, a plurality of grating areas is arranged mutually apart in the X-axis direction, and a plurality of heads that irradiates a measurement beam with respect to the grating area and can move in the Y-axis direction is arranged outside of the substrate holder. A control system controls movement of the substrate holder in at least directions of three degrees of freedom within an XY plane, based on measurement information of at least three heads of the plurality of heads facing the grating area and measurement information of a measurement device that measures position information of the plurality of heads. The measurement beam of each of the plurality of heads, during the movement of substrate holder in the X-axis direction, moves off of one of the plurality of grating areas and switches to another adjacent grating area.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: August 4, 2020
    Assignee: NIKON CORPORATION
    Inventors: Akinori Shirato, Takashi Shibuya
  • Patent number: 10732510
    Abstract: A control system controls a drive system of a substrate holder, based on correction information to compensate for measurement error of a measurement system including an encoder system that occurs due to movement of at least one of a plurality of grating areas (scale), a plurality of heads and a substrate holder, and position information measured by the measurement system, and a measurement beam from a head of each of the plurality of heads moves off from one of the plurality of grating areas and switches to another adjacent grating area, during the movement of the substrate holder in the X-axis direction.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: August 4, 2020
    Assignee: NIKON CORPORATION
    Inventors: Akinori Shirato, Takashi Shibuya
  • Publication number: 20200192232
    Abstract: A liquid crystal exposure apparatus that irradiates a substrate held by a substrate holder which moves along an XY plane with an illumination light via an optical system while the substrate holder moves in the X-axis direction, has; a scale measured based on movement of the substrate holder in the X-axis direction, heads that measure the scale while relatively moving in the X-axis direction with respect to the scale, a plurality of scales arranged at mutually different positions in the X-axis direction measured based on movement of the substrate holder in the Y-axis direction, and a plurality of heads provided for each scale that measures the scales while relatively moving in the Y-axis direction with respect to the scales based on movement of the substrate in the Y-axis direction.
    Type: Application
    Filed: February 21, 2020
    Publication date: June 18, 2020
    Applicant: NIKON CORPORATION
    Inventor: Akinori SHIRATO
  • Patent number: 10656529
    Abstract: A control system, of a plurality of heads, acquires grating correction information related to at least two of scales in a first grating group and scales in a second grating group, based on position information of a movable body measured using at least four heads irradiating measurement beams on at least two of the scales and scales. The grating correction information is used to control movement of the movable body using at least three heads irradiating at least two of the scales and scales.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: May 19, 2020
    Assignee: NIKON CORPORATION
    Inventors: Akinori Shirato, Takashi Shibuya
  • Publication number: 20200019074
    Abstract: A substrate stage apparatus provided with: a substrate holder that can be moved in a plane including an X-axis and a Y-axis; a head unit that can be moved synchronously with the substrate holder along the Y-axis; an encoder system for measuring substrate position, the system including a scale disposed on the substrate holder, and heads disposed on the head unit, and acquiring the X-axis direction and the Y-axis direction position information of the substrate holder on the basis of the output of the heads; an encoder system for measuring head-unit position, the system acquiring the Y-axis direction position information of the head unit; and a position control system that controls the position of the substrate holder within the XY plane on the basis of the output of the encoder system for measuring substrate position and the encoder system for measuring head-unit position.
    Type: Application
    Filed: September 10, 2019
    Publication date: January 16, 2020
    Applicant: NIKON CORPORATION
    Inventor: Akinori SHIRATO
  • Patent number: 10444642
    Abstract: A substrate stage apparatus provided with: a substrate holder that can be moved in a plane including an X-axis and a Y-axis; a head unit that can be moved synchronously with the substrate holder along the Y-axis; an encoder system for measuring substrate position, the system including a scale disposed on the substrate holder, and heads disposed on the head unit, and acquiring the X-axis direction and the Y-axis direction position information of the substrate holder on the basis of the output of the heads; an encoder system for measuring head-unit position, the system acquiring the Y-axis direction position information of the head unit; and a position control system that controls the position of the substrate holder within the XY plane on the basis of the output of the encoder system for measuring substrate position and the encoder system for measuring head-unit position.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: October 15, 2019
    Assignee: NIKON CORPORATION
    Inventor: Akinori Shirato
  • Publication number: 20190204752
    Abstract: A control system, of a plurality of heads, acquires grating correction information related to at least two of scales in a first grating group and scales in a second grating group, based on position information of a movable body measured using at least four heads irradiating measurement beams on at least two of the scales and scales. The grating correction information is used to control movement of the movable body using at least three heads irradiating at least two of the scales and scales.
    Type: Application
    Filed: March 8, 2019
    Publication date: July 4, 2019
    Applicant: NIKON CORPORATION
    Inventors: Akinori SHIRATO, Takashi SHIBUYA
  • Patent number: 10268121
    Abstract: A control system, of a plurality of heads, acquires grating correction information related to at least two of scales in a first grating group and scales in a second grating group, based on position information of a movable body measured using at least four heads irradiating measurement beams on at least two of the scales and scales. The grating correction information is used to control movement of the movable body using at least three heads irradiating at least two of the scales and scales.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: April 23, 2019
    Assignee: NIKON CORPORATION
    Inventors: Akinori Shirato, Takashi Shibuya
  • Publication number: 20190025708
    Abstract: A control system, of a plurality of heads, acquires grating correction information related to at least two of scales in a first grating group and scales in a second grating group, based on position information of a movable body measured using at least four heads irradiating measurement beams on at least two of the scales and scales. The grating correction information is used to control movement of the movable body using at least three heads irradiating at least two of the scales and scales.
    Type: Application
    Filed: September 29, 2016
    Publication date: January 24, 2019
    Applicant: NIKON CORPORATION
    Inventors: Akinori SHIRATO, Takashi SHIBUYA
  • Publication number: 20180364595
    Abstract: A liquid crystal exposure apparatus that irradiates a substrate held by a substrate holder which moves along an XY plane with an illumination light via an optical system while the substrate holder moves in the X-axis direction, has; a scale measured based on movement of the substrate holder in the X-axis direction, heads that measure the scale while relatively moving in the X-axis direction with respect to the scale, a plurality of scales arranged at mutually different positions in the X-axis direction measured based on movement of the substrate holder in the Y-axis direction, and a plurality of heads provided for each scale that measures the scales while relatively moving in the Y-axis direction with respect to the scales based on movement of the substrate in the Y-axis direction.
    Type: Application
    Filed: September 29, 2016
    Publication date: December 20, 2018
    Applicant: Nikon Corporation
    Inventor: Akinori SHIRATO
  • Publication number: 20180321601
    Abstract: A substrate stage apparatus provided with: a substrate holder that can be moved in a plane including an X-axis and a Y-axis; a head unit that can be moved synchronously with the substrate holder along the Y-axis; an encoder system for measuring substrate position, the system including a scale disposed on the substrate holder, and heads disposed on the head unit, and acquiring the X-axis direction and the Y-axis direction position information of the substrate holder on the basis of the output of the heads; an encoder system for measuring head-unit position, the system acquiring the Y-axis direction position information of the head unit; and a position control system that controls the position of the substrate holder within the XY plane on the basis of the output of the encoder system for measuring substrate position and the encoder system for measuring head-unit position.
    Type: Application
    Filed: July 10, 2018
    Publication date: November 8, 2018
    Applicant: NIKON CORPORATION
    Inventor: Akinori SHIRATO
  • Publication number: 20180284619
    Abstract: A control system controls a drive system of a substrate holder, based on correction information to compensate for measurement error of a measurement system including an encoder system that occurs due to movement of at least one of a plurality of grating areas (scale), a plurality of heads and a substrate holder, and position information measured by the measurement system, and a measurement beam from a head of each of the plurality of heads moves off from one of the plurality of grating areas and switches to another adjacent grating area, during the movement of the substrate holder in the X-axis direction.
    Type: Application
    Filed: September 29, 2016
    Publication date: October 4, 2018
    Applicant: NIKON CORPORATION
    Inventors: Akinori SHIRATO, Takashi SHIBUYA