Patents by Inventor Hiroaki Chihaya

Hiroaki Chihaya 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: 11939665
    Abstract: A film thickness measurement apparatus includes: a stage that places a substrate having a film formed thereon and measures a thickness of the film in-situ in a film forming apparatus; a film thickness meter including a light emitter that emits light toward the substrate disposed on the stage and a light receiving sensor that receives the light reflected by the substrate for measuring the thickness of the film in-situ; a moving mechanism including a multi-joint arm that moves an irradiation point of the light on the substrate; a distance meter that measures a distance between the light receiving sensor and the irradiation point on the substrate; and a distance adjustor that adjusts the distance between the light receiving sensor and the irradiation point on the substrate.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: March 26, 2024
    Assignee: TOKYO ELECTRON LIMTED
    Inventors: Masato Shinada, Tamaki Takeyama, Kazunaga Ono, Naoyuki Suzuki, Hiroaki Chihaya, Einstein Noel Abarra
  • Patent number: 11715671
    Abstract: A film forming system for forming a magnetic film is provided. The film forming system includes a processing module configured to form the magnetic film on a substrate, a magnetization characteristic measuring device configured to measure magnetization characteristics of the magnetic film formed on the substrate in the processing module, and a transfer unit configured to transfer the substrate between the processing module and the magnetization characteristic measuring device. The magnetization characteristic measuring device includes a magnetic field applying mechanism having a permanent magnet magnetic circuit configured to apply a magnetic field to the substrate and adjust the magnetic field to be applied to the substrate, and a detector configured to detect magnetization characteristics of the substrate.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: August 1, 2023
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Hiroaki Chihaya, Einstein Noel Abarra, Shota Ishibashi
  • Patent number: 11542592
    Abstract: A film forming system comprises a chamber, a stage, a holder, a cathode magnet, a shield, a first moving mechanism, and a second moving mechanism. The chamber provides a processing space. The stage is provided in the processing space and configured to support a substrate. The holder is configured to hold a target that is provided in the processing space. The cathode magnet is provided outside the chamber with respect to the target. The shield has a slit and is configured to block particles released from the target around the slit. The first moving mechanism is configured to move the shield between the stage and the target along a scanning direction substantially parallel to a surface of the substrate mounted on the stage. The second moving mechanism is configured to move the cathode magnet along the scanning direction.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: January 3, 2023
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Masato Shinada, Naoki Watanabe, Tetsuya Miyashita, Hiroaki Chihaya
  • Publication number: 20220415634
    Abstract: A film forming apparatus for forming a film by magnetron sputtering includes a substrate support supporting the substrate, a holder holding a target for emitting sputtered particles, a magnet unit having a magnet, first and second movement mechanisms configured to periodically move the substrate support and the magnet unit, respectively, and a controller. The controller is configured to control the first movement mechanism and the second movement mechanism so that a phase in a periodic movement of the substrate support remains the same at a start of film formation and at an end of film formation, a phase in a periodic movement of the magnet unit remains the same at a start of film formation and at an end of film formation, and the phase in the periodic movement of the substrate support and the phase in the periodic movement of the magnet unit do not match during film formation.
    Type: Application
    Filed: June 17, 2022
    Publication date: December 29, 2022
    Inventors: Kenichi Imakita, Hiroaki Chihaya, Toru Kitada, Atsushi Gomi
  • Publication number: 20220285182
    Abstract: A substrate processing apparatus includes: a stage having an electrostatic chuck configured to attract a substrate; a measurement part configured to measure a temperature of the stage; and a detection part configured to detect an abnormality caused by attraction of the substrate by the electrostatic chuck, based on a fluctuation of the temperature of the stage.
    Type: Application
    Filed: February 24, 2022
    Publication date: September 8, 2022
    Inventors: Hiroaki CHIHAYA, Tetsuya MIYASHITA, Einstein Noel ABARRA, Yasuhiko KOJIMA
  • Publication number: 20220285197
    Abstract: A substrate processing apparatus includes: a stage including an electrostatic chuck configured to attract a substrate; a heater configured to heat the stage; a heating drive part configured to supply power to the heater so that a temperature of the stage becomes a target value; and a detector configured to detect an abnormality in attraction of the substrate by the electrostatic chuck, wherein the detector is further configured to detect the abnormality based on fluctuation of the power supplied to the heater, the fluctuation being generated by the attraction of the substrate by the electrostatic chuck.
    Type: Application
    Filed: February 25, 2022
    Publication date: September 8, 2022
    Inventors: Hiroaki CHIHAYA, Yasuhiko KOJIMA, Einstein Noel ABARRA, Tetsuya MIYASHITA
  • Publication number: 20220236202
    Abstract: A holder temperature detection method which measures a temperature of a rotatable holder that holds a substrate is provided. The method comprises a step of irradiating a fluorescent body thermally mounted on the holder with a light pulse having a first wavelength, a step of detecting fluorescence having a second wavelength emitted from the fluorescent body due to the light pulse and a step of estimating the temperature of the holder based on the detected fluorescence.
    Type: Application
    Filed: January 13, 2022
    Publication date: July 28, 2022
    Inventors: Einstein Noel ABARRA, Hiroaki CHIHAYA
  • Publication number: 20220220606
    Abstract: There is provided a method for processing a substrate, comprising: preparing a substrate processing device including a rotatable stage on which a substrate is placed, a frozen heat transfer body fixed on a backside of the stage with a gap interposed therebetween and cooled to an extremely low temperature, a gas supply mechanism configured to supply to the gap a cooling gas for transferring a cold heat of the frozen heat transfer body to the stage, a rotation mechanism configured to rotate the stage, and a processing mechanism configured to process the substrate; preheating the stage such that a temperature of the stage reaches a steady cooling temperature within a fixed range; and after preheating, continuously processing a plurality of substrates by the processing mechanism while rotating the stage that has reached the steady cooling temperature in a state where a substrate having a specific temperature higher than or equal to room temperature is placed on the stage.
    Type: Application
    Filed: July 21, 2020
    Publication date: July 14, 2022
    Inventors: Tamaki TAKEYAMA, Hiroaki CHIHAYA, Motoi YAMAGATA, Manabu NAKAGAWASAI, Shinji ORIMOTO
  • Publication number: 20210285096
    Abstract: A film thickness measurement apparatus includes: a stage that places a substrate having a film formed thereon and measures a thickness of the film in-situ in a film forming apparatus; a film thickness meter including a light emitter that emits light toward the substrate disposed on the stage and a light receiving sensor that receives the light reflected by the substrate for measuring the thickness of the film in-situ; a moving mechanism including a multi-joint arm that moves an irradiation point of the light on the substrate; a distance meter that measures a distance between the light receiving sensor and the irradiation point on the substrate; and a distance adjustor that adjusts the distance between the light receiving sensor and the irradiation point on the substrate.
    Type: Application
    Filed: February 24, 2021
    Publication date: September 16, 2021
    Inventors: Masato SHINADA, Tamaki TAKEYAMA, Kazunaga ONO, Naoyuki SUZUKI, Hiroaki CHIHAYA, Einstein Noel ABARRA
  • Publication number: 20210082777
    Abstract: A film forming system for forming a magnetic film is provided. The film forming system includes a processing module configured to form the magnetic film on a substrate, a magnetization characteristic measuring device configured to measure magnetization characteristics of the magnetic film formed on the substrate in the processing module, and a transfer unit configured to transfer the substrate between the processing module and the magnetization characteristic measuring device. The magnetization characteristic measuring device includes a magnetic field applying mechanism having a permanent magnet magnetic circuit configured to apply a magnetic field to the substrate and adjust the magnetic field to be applied to the substrate, and a detector configured to detect magnetization characteristics of the substrate.
    Type: Application
    Filed: September 15, 2020
    Publication date: March 18, 2021
    Inventors: Hiroaki CHIHAYA, Einstein Noel ABARRA, Shota ISHIBASHI
  • Patent number: 10748750
    Abstract: A substrate processing apparatus includes a supporting table having a mounting region for a substrate. A rotation shaft supporting a shutter extends in a vertical direction. The shutter is moved between a first region above the supporting table and a second region by rotating the rotation shaft about its central axis. The shutter includes a pipe having gas output holes. When the shutter is disposed in the first region, the gas output holes are located outside the mounting region in a rotation direction from the second region toward the first region. The minimum distance between the central axis and the gas output holes is smaller than or equal to the minimum distance between the central axis and the mounting region. The maximum distance between the central axis and the gas output holes is greater than equal to the maximum distance between the central axis and the mounting region.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: August 18, 2020
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Hiroaki Chihaya, Hiroshi Sone
  • Publication number: 20190252165
    Abstract: A film forming system comprises a chamber, a stage, a holder, a cathode magnet, a shield, a first moving mechanism, and a second moving mechanism. The chamber provides a processing space. The stage is provided in the processing space and configured to support a substrate. The holder is configured to hold a target that is provided in the processing space. The cathode magnet is provided outside the chamber with respect to the target. The shield has a slit and is configured to block particles released from the target around the slit. The first moving mechanism is configured to move the shield between the stage and the target along a scanning direction substantially parallel to a surface of the substrate mounted on the stage. The second moving mechanism is configured to move the cathode magnet along the scanning direction.
    Type: Application
    Filed: January 11, 2019
    Publication date: August 15, 2019
    Inventors: Masato SHINADA, Naoki WATANABE, Tetsuya MIYASHITA, Hiroaki CHIHAYA
  • Publication number: 20190172690
    Abstract: A substrate processing apparatus includes a supporting table having a mounting region for a substrate. A rotation shaft supporting a shutter extends in a vertical direction. The shutter is moved between a first region above the supporting table and a second region by rotating the rotation shaft about its central axis. The shutter includes a pipe having gas output holes. When the shutter is disposed in the first region, the gas output holes are located outside the mounting region in a rotation direction from the second region toward the first region. The minimum distance between the central axis and the gas output holes is smaller than or equal to the minimum distance between the central axis and the mounting region. The maximum distance between the central axis and the gas output holes is greater than equal to the maximum distance between the central axis and the mounting region.
    Type: Application
    Filed: December 3, 2018
    Publication date: June 6, 2019
    Inventors: Hiroaki CHIHAYA, Hiroshi SONE
  • Patent number: 10297278
    Abstract: Structures and methods for fabrication servo and data heads of tape modules are provided. The servo head may have two shield layers spaced apart by a plurality of gap layers and a sensor. Similarly, the data head may have two shield layers spaced apart by a plurality of gap layers and a sensor. The distance between the shield layers of the servo head may be greater than the distance between the shield layers of the data head. The material of the gap layers may include tantalum or an alloy of nickel and chromium. The material for the gap layers permits deposition of gap layers with sufficiently small surface roughness to prevent distortion of the tape module and increase the stability of the tape module operation.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: May 21, 2019
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Satoru Araki, Diane L. Brown, Hiroaki Chihaya, Dustin W. Erickson, David J. Seagle
  • Publication number: 20140342085
    Abstract: Structures and methods for fabrication servo and data heads of tape modules are provided. The servo head may have two shield layers spaced apart by a plurality of gap layers and a sensor. Similarly, the data head may have two shield layers spaced apart by a plurality of gap layers and a sensor. The distance between the shield layers of the servo head may be greater than the distance between the shield layers of the data head. The material of the gap layers may include tantalum or an alloy of nickel and chromium. The material for the gap layers permits deposition of gap layers with sufficiently small surface roughness to prevent distortion of the tape module and increase the stability of the tape module operation.
    Type: Application
    Filed: July 31, 2014
    Publication date: November 20, 2014
    Inventors: Satoru ARAKI, Diane L. BROWN, Hiroaki CHIHAYA, Dustin W. ERICKSON, David J. SEAGLE
  • Patent number: 8867177
    Abstract: A magnetic read sensor having improved robustness to withstand thermal variations resulting from thermal fly height heating. Improved thermal robustness comes as a result of improved pinned layer pinning. The read head includes an AFM layer having an increased thickness to provide a higher blocking temperature. The read head further includes a pinned layer structure that includes a first magnetic layer adjacent to and exchange coupled with the AFM layer. The first layer comprises a Co—Fe layer with an increased Fe content of 20-30 atomic percent. The pinned layer structure also includes a second magnetic layer that is antiparallel coupled with the AP1 layer. The AP2 layer can be a multi-layer structure that includes a layer of CoFe, a layer of Co—Fe—Hf formed on the layer of Co—Fe, a layer of Co—Fe—B formed on the layer of Co—Fe—Hf, and a second layer of Co—Fe formed on the layer of Co—Fe—B.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: October 21, 2014
    Assignee: HGST Netherlands B.V.
    Inventors: Satoru Araki, Hardayal S. Gill, Hiroaki Chihaya, Dustin W. Erickson, Haiwen Xi, Chang Man Park
  • Patent number: 8804287
    Abstract: Structures and methods for fabrication servo and data heads of tape modules are provided. The servo head may have two shield layers spaced apart by a plurality of gap layers and a sensor. Similarly, the data head may have two shield layers spaced apart by a plurality of gap layers and a sensor. The distance between the shield layers of the servo head may be greater than the distance between the shield layers of the data head. The material of the gap layers may include tantalum or an alloy of nickel and chromium. The material for the gap layers permits deposition of gap layers with sufficiently small surface roughness to prevent distortion of the tape module and increase the stability of the tape module operation.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: August 12, 2014
    Assignee: HGST Netherlands B.V.
    Inventors: Satoru Araki, Diane L. Brown, Hiroaki Chihaya, Dustin W. Erickson, David J. Seagle
  • Patent number: 8254067
    Abstract: As recording density of sensors is increased, it is desired to lower the areal resistivity (RA) of TMR sensors. Decreasing RA to 1.0 ??m2 or below badly influences the read signal since the interlayer coupling magnetic field (Hint) between the pinned layer and the free layer increases sharply and impedes the free rotation of magnetization of the free layer. According to one embodiment, a tunnel junction type magneto-resistive head solves this problem by having a layered film comprising an underlying layer, a crystalline orientation control layer, an antiferromagnetic layer, a first ferromagnetic layer, an antiparallel coupling layer, a second ferromagnetic layer, an insulation barrier layer, and a third ferromagnetic layer between a lower magnetic shield layer and an upper magnetic shield layer, wherein a crystallographic plane of the antiferromagnetic layer is directed parallel to a film surface by growing the antiferromagnetic layer substantially conformably on the crystalline orientation control layer.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: August 28, 2012
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Koichi Nishioka, Hiroaki Chihaya
  • Publication number: 20120106006
    Abstract: A magnetic read sensor having improved robustness to withstand thermal variations resulting from thermal fly height heating. Improved thermal robustness comes as a result of improved pinned layer pinning. The read head includes an AFM layer having an increased thickness to provide a higher blocking temperature. The read head further includes a pinned layer structure that includes a first magnetic layer adjacent to and exchange coupled with the AFM layer. The first layer comprises a Co—Fe layer with an increased Fe content of 20-30 atomic percent. The pinned layer structure also includes a second magnetic layer that is antiparallel coupled with the AP1 layer. The AP2 layer can be a multi-layer structure that includes a layer of CoFe, a layer of Co—Fe—Hf formed on the layer of Co—Fe, a layer of Co—Fe—B formed on the layer of Co—Fe—Hf, and a second layer of Co—Fe formed on the layer of Co—Fe—B.
    Type: Application
    Filed: October 28, 2010
    Publication date: May 3, 2012
    Applicant: Hitachi Global Storage Technologies Netherlands B. V.
    Inventors: Satoru Araki, Hardayal S. Gill, Hiroaki Chihaya, Dustin W. Erickson, Haiwen Xi, Chang Man Park
  • Publication number: 20110261487
    Abstract: Structures and methods for fabrication servo and data heads of tape modules are provided. The servo head may have two shield layers spaced apart by a plurality of gap layers and a sensor. Similarly, the data head may have two shield layers spaced apart by a plurality of gap layers and a sensor. The distance between the shield layers of the servo head may be greater than the distance between the shield layers of the data head. The material of the gap layers may include tantalum or an alloy of nickel and chromium. The material for the gap layers permits deposition of gap layers with sufficiently small surface roughness to prevent distortion of the tape module and increase the stability of the tape module operation.
    Type: Application
    Filed: October 29, 2010
    Publication date: October 27, 2011
    Inventors: SATORU ARAKI, Diane L. Brown, Hiroaki Chihaya, Dustin W. Erickson, David J. Seagle