Patents by Inventor Yuichi Shibazaki

Yuichi Shibazaki 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: 10274831
    Abstract: While a wafer stage moves linearly in a Y-axis direction, surface position information of a wafer surface at a plurality of detection points set at a predetermined interval in an X-axis direction is detected by a multipoint AF system, and by a plurality of alignment systems arranged in a line along the X-axis direction, marks at different positions on the wafer are each detected, and a part of a chipped shot of the wafer is exposed by a periphery edge exposure system. This allows throughput to be improved when compared with the case when detection operation of the marks, detection operation of the surface position information (focus information), and periphery edge exposure operation are performed independently.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: April 30, 2019
    Assignee: NIKON CORPORATION
    Inventor: Yuichi Shibazaki
  • Publication number: 20190121243
    Abstract: In an exposure apparatus that has an illumination optical system to illuminate a mask with an illumination light and a projection optical system to project a pattern image of the illuminated mask onto a substrate, first and second movable bodies, respectively holding the mask and the substrate, are moved based on measurement information of first and the second encoder systems so that, in an exposure operation of the substrate, scanning exposure in which the mask and the substrate are each moved relative to the illumination light is performed with a first direction within the predetermined plane serving as a scanning direction while compensating for a measurement error of the second encoder system that occurs due to at least one of tilt of the second head of the second encoder system and tilt in telecentricity of the second head.
    Type: Application
    Filed: December 20, 2018
    Publication date: April 25, 2019
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Patent number: 10268126
    Abstract: An exposure apparatus exposes a substrate with illumination light via an optical system. A detection system supported in a measurement station detects a mark of the substrate. A stage disposed below the optical system and the detection system holds the substrate with a holder. A carrier system has a first support member supporting the substrate in a noncontact manner and carries the substrate to a loading position in the measurement station. A second support member supports the substrate supported by the first support member, from a rear surface side of the substrate and is vertically movable independently from the first support member. A drive device relatively moves the first support member, the second support member and the holder at least in a vertical direction, at the loading position where the stage is placed. The substrate is carried from the carrier system to the holder via the first support member.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: April 23, 2019
    Assignee: NIKON CORPORATION
    Inventor: Yuichi Shibazaki
  • Publication number: 20190107782
    Abstract: A movement area of a stage includes first-fifth areas. In the first area, three of four heads except for a first head respectively face three of four sections of a scale member except for a first section. In the second area, three of four heads except for a second head respectively face three of four sections except for a second section of the scale member. In the third area, three of four heads except for a third head respectively face three of four sections except for a third section of the scale member. In the fourth area, three of four heads except for a fourth head respectively face three of four sections of the scale member. In the fifth area, the four heads respectively face the four sections. The stage is moved from one of the first-fourth areas to another of those areas via the fifth area.
    Type: Application
    Filed: November 27, 2018
    Publication date: April 11, 2019
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Publication number: 20190107787
    Abstract: A first stage system having a first stage and a first drive system that moves the first stage is configured to hold a mask illuminated with illumination light. A second stage system having a second stage and a second drive system that moves the second stage is configured to hold a substrate. A measurement system having a first encoder system and a second encoder system measures positional information of the first and second stages, respectively. The second encoder system measures the positional information of the second stage with a plurality of heads that face a grating section. The first and second drive systems are controlled while compensating for a measurement error that occurs due to at least one of a gradient and a telecentricity of the head, based on correction information.
    Type: Application
    Filed: December 5, 2018
    Publication date: April 11, 2019
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Patent number: 10254662
    Abstract: An exposure apparatus is equipped with a fine movement stage that can hold a liquid with a projection optical system when the stage is at a position facing an outgoing surface of the projection optical system, and a blade that comes into proximity within a predetermined distance of the fine movement stage when the fine movement stage is holding the liquid with the projection optical system, and moves along with the fine movement stage while maintaining the proximity state, and then holds the liquid with the projection optical system after the movement. Accordingly, a plurality of stages will not have to be placed right under the projection optical system interchangeably, which can suppress an increase in footprint of the exposure apparatus.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: April 9, 2019
    Assignee: NIKON CORPORATION
    Inventor: Yuichi Shibazaki
  • Publication number: 20190086815
    Abstract: When a transition from a first state where one stage is positioned at a first area directly below projection optical system to which liquid is supplied to a state where the other stage-is positioned at the first area, both stages are simultaneously driven while a state where both stages are close together in a direction is maintained. Therefore, it becomes possible to make a transition from the first state to the second state in a state where liquid is supplied in the space between the projection optical system and the specific stage directly under the projection optical system. Because the liquid can constantly exist on the image plane side of the projection optical system, generation of water marks on optical members of the projection optical system on the image plane side is prevented.
    Type: Application
    Filed: November 20, 2018
    Publication date: March 21, 2019
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Patent number: 10234773
    Abstract: While a wafer stage linearly moves in a Y-axis direction, a multipoint AF system detects surface position information of the wafer surface at a plurality of detection points that are set at a predetermined distance in an X-axis direction and also a plurality of alignment systems that are arrayed in a line along the X-axis direction detect each of marks at positions different from one another on the wafer. That is, detection of surface position information of the wafer surface at a plurality of detection points and detection of the marks at positions different from one another on the wafer are finished, only by the wafer stage (wafer) linearly passing through the array of the plurality of detection points of the multipoint AF system and the plurality of alignment systems, and therefore, the throughput can be improved.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: March 19, 2019
    Assignee: NIKON CORPORATION
    Inventor: Yuichi Shibazaki
  • Publication number: 20190079415
    Abstract: A stage device is equipped with a surface plate and a wafer stage which is mounted on the surface plate and has an exhausting port formed on a surface facing the surface plate. In a state where the wafer stage lands on the surface plate, an air chamber is formed in between the surface plate and the wafer stage. Pressurized gas blows out from the exhausting port provided at a stage main section into the air chamber, and self-weight of the wafer stage is cancelled by an inner pressure of the air chamber. This allows to the wafer stage which has stopped on the surface plate to be moved manually.
    Type: Application
    Filed: November 6, 2018
    Publication date: March 14, 2019
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Publication number: 20190074161
    Abstract: An exposure apparatus scans a substrate in a Y-axis direction and also adjusts irradiation position of a plurality of beams, based on correction information obtained from the same number of distortion tables as the beams, the distortion tables including information concerning change of irradiation position of the plurality of beams of a multibeam optical system. Especially, the irradiation position of the plurality of beams in the Y-axis direction is adjusted by individually controlling irradiation timing of the plurality of beams irradiated on the substrate from the multibeam optical system.
    Type: Application
    Filed: March 14, 2017
    Publication date: March 7, 2019
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Publication number: 20190064668
    Abstract: Correction information is acquired for compensating for a measurement error of a second encoder system that occurs due to a displacement between four sections of a scale member of the second encoder system, based on measurement information of the second encoder system obtained in a fifth area in which four heads of the second encoder system that are provided on a second stage, which holds a substrate, respectively face the four sections of the scale member.
    Type: Application
    Filed: October 30, 2018
    Publication date: February 28, 2019
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Publication number: 20190056672
    Abstract: A liquid immersion exposure apparatus includes a liquid immersion member which forms a liquid immersion space under an emitting surface of an optical member. The liquid immersion member includes a first member disposed in a periphery of the optical member, and a second member which is movable relative to the first member and includes a liquid recovery port that recovers at least a portion of liquid in the liquid immersion space. The second member is moved in a direction perpendicular to an optical axis of the optical member so that a relative speed between the second member and an object below the liquid immersion member is smaller than a relative speed between the first member and the object. The second member has an outer surface facing radially outward relative to the optical axis of the optical member, the outer surface does not face toward any surface of the first member.
    Type: Application
    Filed: October 24, 2018
    Publication date: February 21, 2019
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Publication number: 20190049862
    Abstract: In an exposure operation of a substrate, a controller controls first and second drive systems based on measurement information of first and second encoder systems and correction information for compensating for a measurement error of the second encoder system that occurs due to a grating section of the second encoder system, so that scanning exposure in which a mask and the substrate are each moved relative to illumination light in a first direction is performed and the measurement error is compensated for.
    Type: Application
    Filed: October 17, 2018
    Publication date: February 14, 2019
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Publication number: 20190049863
    Abstract: A controller controls a second drive system so that, in an exposure operation, a second stage is moved from one side to an other side in a first direction with respect to a projection optical system while substantially maintaining a liquid immersion area between the second stage and a lens of the projection optical system, in order to perform exposure via the projection optical system and a liquid of the liquid immersion area, from an area located on the one side in the first direction, of a plurality of areas on the substrate.
    Type: Application
    Filed: October 18, 2018
    Publication date: February 14, 2019
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Patent number: 10203613
    Abstract: Positional information of a movable body in a Y-axis direction is measured using an interferometer and an encoder whose short-term stability of measurement values excels when compared with the interferometer, and based on the measurement results, a predetermined calibration operation for obtaining correction information for correcting measurement values of the encoder is performed. Accordingly, by using measurement values of the interferometer, correction information for correcting the measurement values of the encoder whose short-term stability of the measurement values excels the interferometer is obtained. Then, based on the measurement values of the encoder and the correction information, the movable body is driven in the Y-axis direction with good precision.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: February 12, 2019
    Assignee: NIKON CORPORATION
    Inventor: Yuichi Shibazaki
  • Publication number: 20190041244
    Abstract: Position information of a movable body within an XY plane is measured with high accuracy by an encoder system whose measurement values have favorable short-term stability, without being affected by air fluctuations, and also position information of the movable body in a Z-axis direction orthogonal to the XY plane is measured with high accuracy by a surface position measuring system, without being affected by air fluctuations. In this case, since both of the encoder system and the surface position measuring system directly measure the upper surface of the movable body, simple and direct position control of the movable body can be performed.
    Type: Application
    Filed: September 28, 2018
    Publication date: February 7, 2019
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Patent number: 10197924
    Abstract: A first stage system having a first stage and a first drive system that moves the first stage is configured to hold a mask illuminated with illumination light. A second stage system having a second stage and a second drive system that moves the second stage is configured to hold a substrate. A measurement system having a first encoder system and a second encoder system measures positional information of the first and second stages, respectively. The second encoder system measures the positional information of the second stage with a plurality of heads that face a grating section. The first and second drive systems are controlled based on correction information for compensating for a measurement error of the second encoder system that occurs due to the heads and measurement information of the first and the second encoder systems.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: February 5, 2019
    Assignee: NIKON CORPORATION
    Inventor: Yuichi Shibazaki
  • Patent number: 10191383
    Abstract: A movement area of a stage includes first-fifth areas. In the first area, three of four heads except for a first head respectively face three of four sections of a scale member except for a first section. In the second area, three of four heads except for a second head respectively face three of four sections except for a second section of the scale member. In the third area, three of four heads except for a third head respectively face three of four sections except for a third section of the scale member. In the fourth area, three of four heads except for a fourth head respectively face three of four sections of the scale member. In the fifth area, the four heads respectively face the four sections. The stage is moved from one of the first-fourth areas to another of those areas via the fifth area.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: January 29, 2019
    Assignee: NIKON CORPORATION
    Inventor: Yuichi Shibazaki
  • Patent number: 10185228
    Abstract: Positional information of a movable body in a Y-axis direction is measured using an interferometer and an encoder whose short-term stability of measurement values excels when compared with the interferometer, and based on the measurement results, a predetermined calibration operation for obtaining correction information for correcting measurement values of the encoder is performed. Accordingly, by using measurement values of the interferometer, correction information for correcting the measurement values of the encoder whose short-term stability of the measurement values excels the interferometer is obtained. Then, based on the measurement values of the encoder and the correction information, the movable body is driven in the Y-axis direction with good precision.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: January 22, 2019
    Assignee: NIKON CORPORATION
    Inventor: Yuichi Shibazaki
  • Patent number: 10185227
    Abstract: An immersion exposure apparatus exposes a substrate with light via a projection system and liquid, and includes a first stage system having a first movable body to hold a mask, a first detection system that detects a mark of the mask or of the first movable body, a first encoder system having first heads, a second stage system having a second movable body to hold the substrate, a second detection system that detects a mark of the substrate or of the second movable body, and a second encoder system having second heads. In each of an exposure operation and a detection operation by the first detection system, positional information of the first movable body is measured by the first encoder system. In each of the exposure operation and a detection operation by the second detection system, positional information of the second movable body is measured by the second encoder system.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: January 22, 2019
    Assignee: NIKON CORPORATION
    Inventor: Yuichi Shibazaki