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: 9946171
    Abstract: One pair each of a Y linear motor (a total of four) on the +X side and the ?X side that drive a reticle stage include one pair each of a stator section (a total of four) and three each of a mover section (a total of six) on the +X side and the ?X side. In this case, the three each of the mover sections on the +X side and the ?X side configure one each of a mover. The mover section located in the center in the Z-axis direction of each of the movers is used in common by each pair of the Y linear motors. Therefore, the weight of the mover section (reticle stage) of the reticle stage device is reduced, which allows a higher acceleration. Further, the mover section located in the center in the Z-axis direction of each of the movers coincides with a neutral plane of the reticle stage.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: April 17, 2018
    Assignee: NIKON CORPORATION
    Inventor: Yuichi Shibazaki
  • Publication number: 20180101104
    Abstract: In an exposure operation of a substrate, a controller controls first and second drive systems based on correction information for compensating for a measurement error of an encoder system and measurement information of first and second measurement devices, so that scanning exposure is performed and a measurement error is compensated for. In the scanning exposure, a mask and the substrate are each moved relative to illumination light with a first direction serving as a scanning direction, the measurement error occurring due to a difference between a position of a reference plane and a position of a grating surface of a grating section in a third direction orthogonal to a predetermined plane that includes the first direction, and the reference plane being a reference plane for position control or positioning of a second stage or a reference plane with which the substrate coincides in the exposure operation.
    Type: Application
    Filed: December 13, 2017
    Publication date: April 12, 2018
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Publication number: 20180088472
    Abstract: An exposure system is equipped with: a first row of chambers that are arranged to be adjacent to a C/D provided on a floor surface F on a +X side; a second row of chambers arranged on the ?Y side facing the first row of chambers; and a first control rack adjacent to the to the second row of chambers on a ?X side and is arranged on the ?Y side facing the C/D. Inside at least a part of the plurality of chambers, exposure chambers where exposure is performed are formed and the first control rack distributes utilities supplied from the below the floor surface to the first and the second rows of chambers.
    Type: Application
    Filed: April 15, 2016
    Publication date: March 29, 2018
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Publication number: 20180088473
    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: Application
    Filed: November 27, 2017
    Publication date: March 29, 2018
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Publication number: 20180088474
    Abstract: On a substrate conforming to a layout method for a plurality of marks for detection using a plurality of mark detection systems of which the detection centers are arranged at a predetermined spacing along an X-axis direction, a plurality of shot areas are formed in both an X-axis direction and a Y-axis direction orthogonal thereto in an XY plane, and sets including at least two marks separated in the X-axis direction are repeatedly arranged along the X-axis direction at spacing of a length in the X-axis-direction of each shot area, and the marks belonging to each set are separated from each other in the X-axis direction by a spacing determined based arrangement in the X-axis direction of the plurality of mark detection systems and the length. It is thereby possible to reliably detect a plurality of marks on a substrate-using a plurality of mark detection systems.
    Type: Application
    Filed: September 25, 2017
    Publication date: March 29, 2018
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Patent number: 9921490
    Abstract: A substrate holding device is equipped with a substrate holder that adsorbs and holds a substrate, and a plurality of vertical movement pin units that each have, at one end, an adsorption section to adsorb a rear surface of the substrate, and are movable relative to the substrate holder in a state of adsorbing the rear surface of the substrate with the adsorption section. The plurality of vertical movement pin units each have at least part including the adsorption section that is displaced in at least one direction, by an action of a force received from the adsorbed substrate.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: March 20, 2018
    Assignee: NIKON CORPORATION
    Inventor: Yuichi Shibazaki
  • Patent number: 9915878
    Abstract: An exposure apparatus transfers a pattern on a wafer by irradiating a reticle with an illumination light, and the pattern is formed on a pattern surface of the reticle. The exposure apparatus is provided with a reticle stage that moves holding the reticle, and a sensor that irradiates a measurement light on the pattern surface of the reticle held by the reticle stage and detects speckles from the pattern.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: March 13, 2018
    Assignee: NIKON CORPORATION
    Inventor: Yuichi Shibazaki
  • Publication number: 20180067405
    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: Application
    Filed: November 14, 2017
    Publication date: March 8, 2018
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Patent number: 9910361
    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. During exposure, the stage is moved from one of the first-fourth areas to another of those areas via the fifth area.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: March 6, 2018
    Assignee: NIKON CORPORATION
    Inventor: Yuichi Shibazaki
  • Publication number: 20180059554
    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: Application
    Filed: November 6, 2017
    Publication date: March 1, 2018
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Publication number: 20180046096
    Abstract: A measurement device has: a slider which holds a substrate and is movable parallel to the XY plane; a drive system that drives the slider; a position measurement system which emits beams from a head section to a measurement surface in which grating section are provided on the slider, which receives respective return beams of the beams from the measurement surface, and which is capable of measuring position information in at least directions of three degrees of freedom including the absolute position coordinates of the slider; a mark detection system that detects a mark on the substrate; and a controller which detects the marks on the substrate using the mark detection system while controlling the drive of the slider, and which obtains the absolute position coordinates of each mark based on the detection result of each mark and measurement information by the position measurement system at the time of detection.
    Type: Application
    Filed: August 9, 2017
    Publication date: February 15, 2018
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Patent number: 9891531
    Abstract: In corner sections of first to fourth quadrants whose origin point is a center of an upper surface of a stage, three each of two-dimensional heads are provided. The three each of two-dimensional heads include one first head and two second heads. The stage is driven, while measuring a position of the stage using three first heads that face a two-dimensional grating of a scale plate provided above the stage from the four first heads, and during the driving, difference data of measurement values of the two second heads with respect to the first head in a measurement direction are taken in for head groups to which the three first heads belong, respectively, and using the difference data, grid errors are calibrated.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: February 13, 2018
    Assignee: NIKON CORPORATION
    Inventor: Yuichi Shibazaki
  • Publication number: 20180039186
    Abstract: A liquid immersion exposure apparatus includes a liquid immersion member which forms a liquid immersion space under an emitting surface of a last optical member. The exposure light is projected to a substrate through liquid in the liquid immersion space to expose the substrate while the substrate is moved in a scanning direction. The liquid immersion member includes (i) a first member having a liquid supply port and an opening through which the exposure light is projected, and (ii) a second member having a liquid recovery port facing downwardly and that is movable with respect to the first member. The liquid recovery port has a plurality of openings disposed in a four-sided shaped having four corners to surround the opening of the first member.
    Type: Application
    Filed: October 17, 2017
    Publication date: February 8, 2018
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Publication number: 20180039190
    Abstract: A lithography system is provided with: a measurement device measuring position information of marks on a substrate held in a first stage; and an exposure apparatus on a second stage, the substrate for which the position information measurement for the marks has been completed, performs alignment measurement to measure position information for part of marks selected from among the marks on the substrate, and performs exposure. The measurement device measures position information of many marks on the substrate to obtain higher-degree components of correction amounts of an arrangement of divided areas, and the exposure apparatus measures position information of a small number of marks on the substrate to obtain lower-degree components of the correction amounts of the arrangement of the divided areas and exposes the plurality of divided areas while controlling the position of the substrate by using the obtained lower-degree components and the higher-degree components obtained by the measurement device.
    Type: Application
    Filed: August 9, 2017
    Publication date: February 8, 2018
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Publication number: 20180039191
    Abstract: A measurement device is equipped with a surface plate, a slider which holds a substrate and which is movable relative to the surface plate, a drive system that moves the slider, a first position measurement system which measures the slider's first position information relative to the surface plate, a measurement unit having a mark detection system that detects a mark on a substrate, a second position measurement system which measures a relative second position information between the mark detection system and substrate, and a controller which obtains the first position information from the first position measurement system and second position information from the second position measurement system while controlling the slider's movement by the drive system, and obtains position information of a plurality of marks based on detection signals of the mark detection system having detected marks on the substrate, the first position information, and the second position information.
    Type: Application
    Filed: August 9, 2017
    Publication date: February 8, 2018
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Patent number: 9874822
    Abstract: A controller inclines a movable body with respect to an XY plane at an angle ? in a periodic direction of a grating, based on a measurement value of an interferometer which measures an angle of inclination of the movable body to the XY plane, and based on a measurement value of an encoder system and information of angle ? before and after inclination, and computes an Abbe offset quantity of the grating surface with respect to a reference surface which serves as a reference for position control of the movable body in the XY plane. The controller drives the movable body, based on positional information of the movable body in the XY plane measured by the encoder system and a measurement error of the encoder system corresponding to an angle of inclination of the movable body to the XY plane due to Abbe offset quantity of the grating surface.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: January 23, 2018
    Assignee: NIKON CORPORATION
    Inventor: Yuichi Shibazaki
  • Patent number: 9874823
    Abstract: A purge cover is equipped whose upper end is connected to an illumination unit and the lower end has a pair of plate sections facing an upper surface of a reticle stage and a reticle via a predetermined clearance. Therefore, gaseous circulation can be substantially blocked via the clearance between the reticle stage and the plate sections. This allows a space which is almost airtight surrounded by the purge cover, the reticle stage and/or the reticle to be formed on the optical path of the illumination light that reaches the projection optical system from the illumination unit. Further, the space above which is almost airtight serves as a purge space that is purged with clean dry air and the like.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: January 23, 2018
    Assignee: NIKON CORPORATION
    Inventor: Yuichi Shibazaki
  • Publication number: 20180004097
    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: Application
    Filed: September 14, 2017
    Publication date: January 4, 2018
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Publication number: 20180004098
    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: Application
    Filed: September 14, 2017
    Publication date: January 4, 2018
    Applicant: NIKON CORPORATION
    Inventor: Yuichi SHIBAZAKI
  • Patent number: 9857697
    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: July 6, 2016
    Date of Patent: January 2, 2018
    Assignee: NIKON CORPORATION
    Inventor: Yuichi Shibazaki