Patents by Inventor Hirohito Ito

Hirohito Ito 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).

  • Publication number: 20160257060
    Abstract: Provided is an imprint apparatus that brings a mold into contact with an imprint material on a substrate to perform patterning on the substrate, and includes a mold holder configured to hold the mold; a substrate holder configured to hold the substrate; a driving device configured to move at least one of the mold holder and the substrate holder; a detector configured to detect a state of the driving device; and a controller configured to perform decision that release of the mold is started based on an output of the detector and to control the driving device so as to decrease a force for the release by the driving device in accordance with the decision.
    Type: Application
    Filed: February 22, 2016
    Publication date: September 8, 2016
    Inventors: Hirohito Ito, Tosiya Asano
  • Publication number: 20150378342
    Abstract: A command data generation method includes the steps of acquiring, by performing iterative learning control on a moving member, a first command data set for moving the moving member along a first trajectory, the first command data set including data corresponding to an acceleration section, a constant speed section and a deceleration section of the moving member, and generating a second command data set for driving the moving member along a second trajectory by using a part of data for the constant speed section in the first command data set.
    Type: Application
    Filed: June 24, 2015
    Publication date: December 31, 2015
    Inventor: Hirohito Ito
  • Publication number: 20150303025
    Abstract: The present invention provides a lithography apparatus that performs patterning on a substrate with a beam, the apparatus comprising a blanker configured to perform blanking of the beam, and a controller configured to control the blanker, wherein the controller is configured to sequentially perform quantization accompanied by diffusion of an error to generate a command value for the blanking with respect to each of a plurality of pixels on the substrate, and the error is an error between a target value of dose and a predicted value of dose at a target pixel of the plurality of pixels.
    Type: Application
    Filed: April 14, 2015
    Publication date: October 22, 2015
    Inventor: Hirohito Ito
  • Patent number: 8981321
    Abstract: A charged-particle beam exposure apparatus which includes a deflector that deflects a charged-particle beam, and a stage mechanism that drives a substrate, and draws a pattern on the substrate while scanning the charged-particle beam in a main-scanning direction by the deflector and scanning the substrate in a sub-scanning direction by the stage mechanism. The apparatus includes a blanker unit configured to control irradiation and unirradiation of the substrate with the charged-particle beam, and a controller configured to control the deflector to deflect the charged-particle beam in the sub-scanning direction by an amount of driving of the substrate in the sub-scanning direction by the stage mechanism during a period of time from stop of drawing on the substrate until restart thereof when the drawing on the substrate is stopped and then restarted while the substrate is driven in the sub-scanning direction by the stage mechanism.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: March 17, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hirohito Ito
  • Patent number: 8829461
    Abstract: A scanning apparatus which performs scan on an object with a charged particle beam includes: a blanking deflector configured to individually blank a plurality of charged particle beams based on control data; a scanning deflector configured to collectively deflect the plurality of charged particle beams to perform the scan; and a controller. The controller is configured to hold first data used to obtain error in a scanning amount and a scanning direction of the scanning deflector relative to a reference scanning amount and a reference scanning direction with respect to each of the plurality of charged particle beams, and to generate the control data based on the first data so that the scan is performed for a target region on the object.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: September 9, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirohito Ito, Yusuke Sugiyama
  • Publication number: 20140162191
    Abstract: A drawing apparatus, that performs drawing on a substrate with charged particle beams based on first image data associated with a first grid, includes a blanker array including a plurality of columns each including a plurality of blankers, a scanning deflector configured to deflect at least one of the charged particle beams that has not been blanked by the blanker array to cause the deflected beam to scan the substrate in a scan direction, a drive circuit configured to sequentially drive the blanker array with respect to each of the columns periodically to define a second grid on the substrate that is displaced from the first grid in the scan direction, and a controller configured to generate second image data on the second grid by performing interpolation processing on the first image data and to control the drive circuit based on the second image data.
    Type: Application
    Filed: November 26, 2013
    Publication date: June 12, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Hirohito Ito
  • Publication number: 20140070112
    Abstract: A charged-particle beam exposure apparatus which includes a deflector that deflects a charged-particle beam, and a stage mechanism that drives a substrate, and draws a pattern on the substrate while scanning the charged-particle beam in a main-scanning direction by the deflector and scanning the substrate in a sub-scanning direction by the stage mechanism. The apparatus includes a blanker unit configured to control irradiation and unirradiation of the substrate with the charged-particle beam, and a controller configured to control the deflector to deflect the charged-particle beam in the sub-scanning direction by an amount of driving of the substrate in the sub-scanning direction by the stage mechanism during a period of time from stop of drawing on the substrate until restart thereof when the drawing on the substrate is stopped and then restarted while the substrate is driven in the sub-scanning direction by the stage mechanism.
    Type: Application
    Filed: November 20, 2013
    Publication date: March 13, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Hirohito ITO
  • Patent number: 8625077
    Abstract: A positioning apparatus according to the present invention includes: a tabletop having a plane; a plurality of actuators configured to be driven in a direction perpendicular to the plane to move the tabletop; and a control unit configured to measure a frequency response of the tabletop and, when a peak is detected at the resonance frequency of elastic vibration of the tabletop, adjust the thrust distribution ratio for the plurality of actuators to reduce the peak.
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: January 7, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hirohito Ito
  • Patent number: 8618516
    Abstract: A charged-particle beam exposure apparatus which includes a deflector that deflects a charged-particle beam, and a stage mechanism that drives a substrate, and draws a pattern on the substrate while scanning the charged-particle beam in a main-scanning direction by the deflector and scanning the substrate in a sub-scanning direction by the stage mechanism. The apparatus includes a blanker unit configured to control irradiation and unirradiation of the substrate with the charged-particle beam, and a controller configured to control the deflector to deflect the charged-particle beam in the sub-scanning direction by an amount of driving of the substrate in the sub-scanning direction by the stage mechanism during a period of time from stop of drawing on the substrate until restart thereof when the drawing on the substrate is stopped and then restarted while the substrate is driven in the sub-scanning direction by the stage mechanism.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: December 31, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hirohito Ito
  • Patent number: 8562323
    Abstract: An imprint apparatus is disclosed that forms, by pressing a resin applied onto a substrate and a mold against each other, a pattern on the substrate. The imprint apparatus includes a substrate stage that holds the substrate, and a control unit for controlling the position of the stage by outputting a manipulating variable on the basis of a position error between a position of the stage which has been measured by position measurement unit and a target position. The control unit reduces a ratio of the manipulating variable to the position error while the substrate and the mold are in contact with each other until mold release.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: October 22, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirohito Ito, Nobushige Korenaga, Makoto Miyazaki
  • Publication number: 20120126136
    Abstract: A charged-particle beam exposure apparatus which includes a deflector that deflects a charged-particle beam, and a stage mechanism that drives a substrate, and draws a pattern on the substrate while scanning the charged-particle beam in a main-scanning direction by the deflector and scanning the substrate in a sub-scanning direction by the stage mechanism. The apparatus includes a blanker unit configured to control irradiation and unirradiation of the substrate with the charged-particle beam, and a controller configured to control the deflector to deflect the charged-particle beam in the sub-scanning direction by an amount of driving of the substrate in the sub-scanning direction by the stage mechanism during a period of time from stop of drawing on the substrate until restart thereof when the drawing on the substrate is stopped and then restarted while the substrate is driven in the sub-scanning direction by the stage mechanism.
    Type: Application
    Filed: November 11, 2011
    Publication date: May 24, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Hirohito Ito
  • Publication number: 20110164230
    Abstract: A positioning apparatus according to the present invention includes: a tabletop having a plane; a plurality of actuators configured to be driven in a direction perpendicular to the plane to move the tabletop; and a control unit configured to measure a frequency response of the tabletop and, when a peak is detected at the resonance frequency of elastic vibration of the tabletop, adjust the thrust distribution ratio for the plurality of actuators to reduce the peak.
    Type: Application
    Filed: January 4, 2011
    Publication date: July 7, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Hirohito Ito
  • Publication number: 20110159189
    Abstract: An imprint apparatus is disclosed that forms, by pressing a resin applied onto a substrate and a mold against each other, a pattern on the substrate. The imprint apparatus includes a substrate stage that holds the substrate, and a control unit for controlling the position of the stage by outputting a manipulating variable on the basis of a position error between a position of the stage which has been measured by position measurement unit and a target position. The control unit reduces a ratio of the manipulating variable to the position error while the substrate and the mold are in contact with each other until mold release.
    Type: Application
    Filed: December 17, 2010
    Publication date: June 30, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hirohito Ito, Nobushige Korenaga, Makoto Miyazaki
  • Patent number: 7771065
    Abstract: An optical unit including a plate, an optical element, a fixing device for partially fixing the optical element against the plate, and a deforming device, located between the plate and the optical element, for applying a deforming force to the optical element to change a surface shape of the optical element. The deforming device includes poles for contacting a back face of the optical element, and actuators for driving the poles against the plate.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: August 10, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Choshoku Sai, Shigeo Sakino, Katsumi Asada, Hirohito Ito, Shinji Uchida
  • Patent number: 7738232
    Abstract: In driving a movable body in a target direction, a force in another direction, which may act on the movable body, is reduced. A system includes a current amplifier, which drives X1 and X2 electromagnets (a first actuator) for aligning the movable body in the X direction, a system including a current amplifier, which drives Y1 and Y2 electromagnets (a second actuator) for aligning the movable body in the Y direction, a subordinate direction component correction unit, which reduces a force in the Y direction acting on the movable body when driving the movable body in the X direction by the first actuator, and a subordinate direction component correction unit, which reduces a force in the X direction acting on the movable body when driving the movable body in the Y direction by the second actuator.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: June 15, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hirohito Ito
  • Patent number: 7710626
    Abstract: At least one exemplary embodiment is directed to an optical element driving apparatus which includes a first actuator configured to drive an optical element in accordance with a deformation target value, a sensor arranged to measure a position and an orientation of the optical element, a second actuator configured to drive the optical element in accordance with position and orientation target values and an output of the sensor, and a correcting unit configured to correct a measurement error of the sensor caused by deformation of the optical element.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: May 4, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hirohito Ito
  • Publication number: 20090310145
    Abstract: A positioning apparatus comprises a controller for controlling a driving device, and positions a measurement portion of an optical element. The controller displaces a drive portion of the optical element by a specific operation of the driving device, and calculate a displacement of the optical element as a first displacement based on an output from a position measuring device, calculate a displacement of the optical element caused by the specific operation as a second displacement, based on an output from a wavefront measuring device configured to measure a wavefront of light directed by the optical element, based on a difference between the first displacement and the second displacement, calibrate a position of the optical element calculated from the output from the position measuring device, and store a result of the calibration, and control the driving device based on the stored calibration result and an output from the position measuring device.
    Type: Application
    Filed: June 4, 2009
    Publication date: December 17, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yusuke Sugiyama, Hirohito Ito
  • Patent number: 7615915
    Abstract: A spark plug having a protrusion amount t of not smaller than 0.3 mm and satisfying a relation ?1+?2?93° in which ?1 is an included angle between virtual lines s1 and s2, and ?2 is an included angle between virtual lines s3 and s4 when the virtual line s1 is taken as a line parallel to a direction of an axis and including the other end side edge on a leading end surface of a first precious metal tip, the virtual line s2 is taken as a line connecting the other end side edge and a point of intersection between an inner circumferential surface of a ground electrode body and the other end surface of the ground electrode body, the virtual line s3 is taken as a line parallel to the direction of the axis and including the other end side edge on a leading end surface of a center electrode, and the virtual line s4 is taken as a line including the other end side edge and tangent to an insulator.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: November 10, 2009
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Hirohito Ito, Takahiro Matsuura
  • Patent number: 7530795
    Abstract: A fluid control mechanism includes a laser irradiation control unit to control irradiation of a light beam generated by a laser generation unit, and a liquid tank, having at least one liquid passing port and a lens to collect the light beam in the liquid tank, to hold liquid. The laser irradiation control unit emits the light beam to the lens to collect the light beam by the lens, thereby causing thermal expansion of the liquid in the liquid tank, to control inflow/outflow of the liquid via the liquid passing port.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: May 12, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hirohito Ito
  • Publication number: 20090033901
    Abstract: A driving apparatus for driving an object in a vacuum environment includes a first chamber whose interior is maintained in a vacuum environment, a mover configured to load the object, and a stator, wherein the mover includes one or more magnets, the stator includes one or more coils. The mover moves along an upper surface of the stator in a non-contact state therewith when an electric current is applied to the coil or coils. The upper surface of the stator is a part of a partition wall of the first chamber.
    Type: Application
    Filed: July 28, 2008
    Publication date: February 5, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Hirohito Ito