Patents by Inventor Shogo Okita

Shogo Okita 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: 20170229384
    Abstract: In a plasma processing step that is used in the method of manufacturing the element chip for manufacturing a plurality of element chips by dividing a substrate which has a plurality of element regions and of which an element surface is covered by insulating film, the substrate is divided into element chips by exposing the substrate to a first plasma, element chips having first surface, second surface, and side surface are held spaced from each other on carrier, insulating film is in a state of being exposed, recessed portions are formed by retreating insulating film by exposing element chips to second plasma for ashing, and then recessed portions are covered by protection films by third plasma for formation of the protection film, thereby suppressing creep-up of the conductive material to side surface in the mounting step.
    Type: Application
    Filed: January 18, 2017
    Publication date: August 10, 2017
    Inventors: ATSUSHI HARIKAI, SHOGO OKITA, NORIYUKI MATSUBARA
  • Publication number: 20170229385
    Abstract: To provide a method of manufacturing an element chip in which creep-up of a conductive material can be suppressed in a mounting step. In a plasma processing step that is used in the method of manufacturing the element chip for manufacturing a plurality of element chips by dividing a substrate which has a plurality of element regions and of which an element surface is covered by an insulating film, the substrate is divided into the element chips by exposing the substrate to a first plasma, the element chips having a first surface, a second surface, and a side surface are held spaced from each other on a carrier, and the side surface and the insulating film are in a state of being exposed.
    Type: Application
    Filed: January 18, 2017
    Publication date: August 10, 2017
    Inventors: ATSUSHI HARIKAI, SHOGO OKITA, NORIYUKI MATSUBARA
  • Patent number: 9698052
    Abstract: In a method of manufacturing an element chip for manufacturing a plurality of element chips by dividing a substrate, where the protruding portions, which are exposed element electrodes, are formed on element regions, protection films made of fluorocarbon film are formed on a second surface and side surfaces of the element chip, and a first surface in a gap by exposing the element chip to second plasma after the substrate is divided by etching. Next, the protection films formed on the second surface and the side surfaces of the element chip are removed while leaving at least a part of the protection film formed in the gap by exposing the element chip to third plasma. Therefore, creep-up of a conductive material in a mounting step is suppressed by the left protection film.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: July 4, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Atsushi Harikai, Shogo Okita, Noriyuki Matsubara
  • Patent number: 9698073
    Abstract: In a plasma processing step in a method of manufacturing an element chip in which a plurality of element chips are manufactured by dividing a substrate, which has a plurality of element regions, the substrate is divided into element chips by exposing the substrate to first plasma. In a protection film forming step of forming a protection film covering a side surface and a second surface by exposing the element chips to second plasma of which raw material gas is mixed gas of carbon fluoride and helium, protection film forming conditions are set such that a thickness of a second protection film of the second surface is greater than a thickness of a first protection film of the side surface.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: July 4, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Atsushi Harikai, Shogo Okita, Noriyuki Matsubara, Mitsuru Hiroshima, Mitsuhiro Okune
  • Publication number: 20170178871
    Abstract: A dry etching apparatus plasma processes a wafer held by a carrier having a frame and an holding sheet. The carrier is placed on an electrode unit of a stage provided in a chamber. The electrode unit is cooled by a cooling section configured to cool the electrode unit. An upper face of the electrode unit is at least as large as the back side of the carrier. The holding sheet and the frame are cooled effectively by the heat transfer to the stage.
    Type: Application
    Filed: February 28, 2017
    Publication date: June 22, 2017
    Inventor: Shogo OKITA
  • Patent number: 9620336
    Abstract: A dry etching apparatus plasma processes a wafer held by a carrier having a frame and an holding sheet. A electrode unit of a stage includes an electrostatic chuck. Adjacent to an upper surface of the electrostatic chuck, a first electrostatic attraction electrode and a second electrostatic attraction electrode are incorporated. The first electrostatic attraction electrode is of unipolar type and electrostatically attracts the wafer via the holding sheet. The second electrostatic electrode is of bipolar type and electrostatically attracts the frame via the holding sheet as well as a holding sheet between the wafer and the frame. Both of plasma processing performance and electrostatic attraction performance are improved.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: April 11, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD
    Inventor: Shogo Okita
  • Publication number: 20170098591
    Abstract: In a plasma processing step in a method of manufacturing an element chip in which a plurality of element chips are manufactured by dividing a substrate, which has a plurality of element regions, the substrate is divided into element chips by exposing the substrate to first plasma. In a protection film forming step of forming a protection film covering a side surface and a second surface by exposing the element chips to second plasma of which raw material gas is mixed gas of carbon fluoride and helium, protection film forming conditions are set such that a thickness of a second protection film of the second surface is greater than a thickness of a first protection film of the side surface.
    Type: Application
    Filed: September 14, 2016
    Publication date: April 6, 2017
    Inventors: ATSUSHI HARIKAI, SHOGO OKITA, NORIYUKI MATSUBARA, MITSURU HIROSHIMA, MITSUHIRO OKUNE
  • Publication number: 20170098590
    Abstract: In a method of manufacturing an element chip for manufacturing a plurality of element chips by dividing a substrate, where the protruding portions, which are exposed element electrodes, are formed on element regions, protection films made of fluorocarbon film are formed on a second surface and side surfaces of the element chip, and a first surface in a gap by exposing the element chip to second plasma after the substrate is divided by etching. Next, the protection films formed on the second surface and the side surfaces of the element chip are removed while leaving at least a part of the protection film formed in the gap by exposing the element chip to third plasma. Therefore, creep-up of a conductive material in a mounting step is suppressed by the left protection film.
    Type: Application
    Filed: September 15, 2016
    Publication date: April 6, 2017
    Inventors: ATSUSHI HARIKAI, SHOGO OKITA, NORIYUKI MATSUBARA
  • Publication number: 20170092527
    Abstract: In a plasma processing process used for a method of manufacturing element chips by which a plurality of element chips are manufactured by dividing a substrate having a plurality of element regions, the substrate is exposed to first plasma, and thereby the substrate is divided into element chips, and the element chips having first surfaces, second surfaces, and side surfaces connecting the first surfaces to the second surfaces are held with an interval between the element chips on the carrier. The element chips are exposed to second plasma which uses a mixed gas of fluorocarbon and helium as a raw material gas, and thereby a protection film covering the side surfaces is formed, and a conductive material is prevented from creeping up to the side surfaces during a mounting process.
    Type: Application
    Filed: September 7, 2016
    Publication date: March 30, 2017
    Inventors: ATSUSHI HARIKAI, SHOGO OKITA, NORIYUKI MATSUBARA
  • Patent number: 9570272
    Abstract: A plasma processing apparatus includes: a reaction chamber; a stage which is disposed inside the reaction chamber and on which a conveyance carrier is mountable; an electrostatic chuck mechanism including an electrode portion that is disposed inside the stage; a support portion which supports the conveyance carrier between a stage-mounted position on the stage and a transfer position that is distant from the stage upward; and an elevation mechanism which elevates and lowers the support portion relative to the stage. In a case in which the conveyance carrier is mounted on the stage by lowering the support portion, the electrostatic chuck mechanism starts applying a voltage to the electrode portion before contact of an outer circumferential portion of a holding sheet which holds the conveyance carrier to the stage.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: February 14, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Shogo Okita, Atsushi Harikai, Noriyuki Matsubara
  • Patent number: 9502220
    Abstract: A plasma processing apparatus that performs plasma processing on a substrate held on a transport carrier including an annular frame and a holding sheet. The apparatus includes: a process chamber; a plasma excitation device that generates plasma; a stage in the chamber; a cooling mechanism for cooling the stage; a cover that partly covers the holding sheet and the frame and has a window section through which the substrate is partly exposed to plasma; and a movement device that moves a relative position of the cover to the frame. The cover has a roof section, a cylindrical circumferential side section extending from a circumferential edge of the roof section toward the stage, and a correction member that protrudes from the roof section and/or the circumferential side section toward the frame and presses the frame onto the stage to correct warpage of the frame.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: November 22, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Shogo Okita, Bunji Mizuno, Tomohiro Okumura
  • Publication number: 20160293456
    Abstract: A plasma processing apparatus includes: a reaction chamber; a plasma generation unit; a stage disposed inside the reaction chamber; an electrostatic chuck mechanism including an electrode portion inside the stage; a heater inside the stage; a support portion which supports a conveyance carrier between a stage-mounted position on the stage and a transfer position distant from the stage upward; and an elevation mechanism which elevates and lowers the support portion relative to the stage. In a case in which the conveyance carrier is mounted on the stage by lowering the support portion, application of voltage to the electrode portion is started in a state that the stage is being heated, and the plasma generation unit generates plasma after at least a part of an outer circumferential portion of a holding sheet holding the conveyance carrier contacts the stage and also after the heating of the stage is stopped.
    Type: Application
    Filed: January 19, 2016
    Publication date: October 6, 2016
    Inventors: Shogo Okita, Atsushi Harikai, Noriyuki Matsubara
  • Publication number: 20160293381
    Abstract: A plasma processing apparatus includes: a reaction chamber; a stage which is disposed inside the reaction chamber and on which a conveyance carrier is mountable; an electrostatic chuck mechanism including an electrode portion that is disposed inside the stage; a support portion which supports the conveyance carrier between a stage-mounted position on the stage and a transfer position that is distant from the stage upward; and an elevation mechanism which elevates and lowers the support portion relative to the stage. In a case in which the conveyance carrier is mounted on the stage by lowering the support portion, the electrostatic chuck mechanism starts applying a voltage to the electrode portion before contact of an outer circumferential portion of a holding sheet which holds the conveyance carrier to the stage.
    Type: Application
    Filed: January 19, 2016
    Publication date: October 6, 2016
    Inventors: Shogo OKITA, Atsushi HARIKAI, Noriyuki MATSUBARA
  • Publication number: 20160293469
    Abstract: A plasma processing apparatus includes: a reaction chamber; a plasma generation unit; a stage disposed inside the reaction chamber; an electrostatic chuck mechanism including an electrode portion disposed inside the stage; a support portion which supports the conveyance carrier; and an elevation mechanism which elevates and lowers the support portion relative to the stage. In a case in which the conveyance carrier is mounted on the stage, the electrostatic chuck mechanism performs an operation of applying a voltage to the electrode portion after contact of an outer circumferential portion of a holding sheet of the conveyance carrier to the stage, the operation including a voltage varying operation of increasing and decreasing an absolute value of the voltage, and the plasma generation unit generates plasma after completion of the voltage varying operation.
    Type: Application
    Filed: February 4, 2016
    Publication date: October 6, 2016
    Inventors: Shogo OKITA, Atsushi HARIKAI, Noriyuki MATSUBARA
  • Publication number: 20160240352
    Abstract: A plasma processing apparatus performs plasma processing on a substrate held by a carrier. The carrier includes a frame disposed around the substrate and a holding sheet which holds the substrate and the frame. The plasma processing apparatus includes: a chamber; a stage which is disposed within the chamber and has an upper surface on which the carrier is mounted; a gas hole which is provided at a position of the upper surface opposing a bottom surface of the frame and through which cooling gas is supplied between the stage and the carrier; and a plasma exciting unit which generates plasma within the chamber.
    Type: Application
    Filed: October 2, 2015
    Publication date: August 18, 2016
    Inventors: Tetsuhiro IWAI, Shogo OKITA, Syouzou WATANABE
  • Publication number: 20160118284
    Abstract: A plasma processing apparatus includes: a vessel which includes a reaction chamber, atmosphere within the reaction chamber capable of being depressurized; a lower electrode which supports an object to be processed within the reaction chamber; a dielectric member which comprises a first surface and a second surface opposite to the first surface, and which closes an opening of the vessel such that the first surface opposes an outside of the reaction chamber and the second surface opposes the object to be processed; and a coil which opposes the first surface of the dielectric member, and which generates plasma within the reaction chamber. An electrode pattern and an insulation film which covers the electrode pattern are formed on the second surface of the dielectric member.
    Type: Application
    Filed: October 21, 2015
    Publication date: April 28, 2016
    Inventors: Tetsuhiro IWAI, Shogo OKITA, Syouzou WATANABE
  • Publication number: 20160118229
    Abstract: A plasma processing apparatus includes: a vessel which includes a reaction chamber, atmosphere within the reaction chamber capable of being depressurized; a lower electrode which supports an object to be processed within the reaction chamber; a dielectric member which includes a first surface and a second surface opposite to the first surface, and which closes an opening of the vessel such that the first surface opposes an outside of the reaction chamber and the second surface opposes the object to be processed; and a coil which opposes the first surface of the dielectric member, and which generates plasma within the reaction chamber. The dielectric member has a groove formed in the first surface of the dielectric member, and at least a part of the coil is disposed in the groove.
    Type: Application
    Filed: September 25, 2015
    Publication date: April 28, 2016
    Inventors: Tetsuhiro IWAI, Shogo OKITA
  • Publication number: 20160064188
    Abstract: A plasma processing apparatus that performs plasma processing to a substrate held on a transport carrier including a frame and a holding sheet that covers an opening of the frame includes: a transport mechanism that transports the transport carrier; a position measuring section that measures a position of the substrate to the frame; a plasma processing section that includes a plasma processing stage on which the transport carrier is loaded and a cover that covers the frame and a part of the holding sheet loaded on the plasma processing stage, and has a window section for exposing a part of the substrate; and a control section that controls the transport mechanism such that the transport carrier is loaded on the plasma processing stage to satisfy a positional relationship between the window section and the substrate based on the position information of the substrate to the frame.
    Type: Application
    Filed: August 5, 2015
    Publication date: March 3, 2016
    Inventors: Shogo OKITA, Hiromi ASAKURA, Syouzou WATANABE, Noriyuki MATSUBARA, Mitsuru HIROSHIMA, Toshihiro WADA
  • Publication number: 20160064196
    Abstract: A plasma processing apparatus that performs plasma processing on a substrate held on a transport carrier including an annular frame and a holding sheet. The apparatus includes: a process chamber; a plasma excitation device that generates plasma; a stage in the chamber; a cooling mechanism for cooling the stage; a cover that partly covers the holding sheet and the frame and has a window section through which the substrate is partly exposed to plasma; and a movement device that moves a relative position of the cover to the frame. The cover has a roof section, a cylindrical circumferential side section extending from a circumferential edge of the roof section toward the stage, and a correction member that protrudes from the roof section and/or the circumferential side section toward the frame and presses the frame onto the stage to correct warpage of the frame.
    Type: Application
    Filed: August 27, 2015
    Publication date: March 3, 2016
    Inventors: Shogo OKITA, Bunji MIZUNO, Tomohiro OKUMURA
  • Publication number: 20160064198
    Abstract: A plasma processing apparatus that performs plasma processing on a substrate held on a transport carrier including an annular frame and a holding sheet. The apparatus includes a process chamber; a process gas supply unit that supplies process gas to the process chamber; a decompressing mechanism that decompresses the process chamber; a plasma excitation device that generates plasma in the process chamber; a stage in the chamber, on which the transport carrier is loaded; a cooling mechanism for cooling the stage; a cover that partly covers the holding sheet and the frame and that has a window section through which the substrate is partly exposed to plasma; a correction member that presses the frame onto the stage and corrects warpage of the frame; and a movement device that moves the correction member. The correction member is provided separately from the cover to be covered by the cover.
    Type: Application
    Filed: August 25, 2015
    Publication date: March 3, 2016
    Inventors: Shogo OKITA, Bunji MIIZUNO, Tomohiro OKUMURA