Patents by Inventor Mizuki Nagai

Mizuki Nagai 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: 11725297
    Abstract: A plating apparatus including a thief electrode that can be suitably maintained is provided. The plating apparatus includes a substrate holder holding a substrate, a thief electrode supporter supporting a thief electrode to be disposed outside the substrate, a plating tank configured to immerse the substrate in a plating solution for applying an electroplating treatment, a thief electrode maintenance tank configured to perform maintenance of the thief electrode, and a transport module configured to transport the thief electrode supporter to the plating tank and the thief electrode maintenance tank.
    Type: Grant
    Filed: October 18, 2021
    Date of Patent: August 15, 2023
    Assignee: EBARA CORPORATION
    Inventors: Naoki Shimomura, Mizuki Nagai
  • Publication number: 20230203701
    Abstract: Uniformity in plated film thickness in a plating apparatus is improved. A plating apparatus for plating a substrate by making electric current flow from an anode to the substrate is provided. The plating apparatus comprises: plural anode-side electric wires which are electrically connected to the anode via plural electric contacts on the anode; plural substrate-side electric wires which are electrically connected to the substrate via plural electric contacts on the substrate; plural variable resistors positioned, in at least one of the anode side and the substrate side, in middle positions in the plural anode-side electric wires or the plural substrate-side electric wires; and a controller constructed to adjust each of resistance values of the plural variable resistors.
    Type: Application
    Filed: November 3, 2022
    Publication date: June 29, 2023
    Inventors: Ryuya KOIZUMI, Mizuki NAGAI, Tensei SATO
  • Patent number: 11686009
    Abstract: To partially or locally control a plating film thickness on a polygonal substrate. There is provided a regulation plate for adjusting a current between an anode and the polygonal substrate. This regulation plate includes a main body that has an edge forming a polygonal opening through which the current passes and an attachable/detachable shielding member to shield at least a part of the polygonal opening.
    Type: Grant
    Filed: February 1, 2022
    Date of Patent: June 27, 2023
    Assignee: EBARA CORPORATION
    Inventors: Naoki Shimomura, Mizuki Nagai
  • Patent number: 11566339
    Abstract: A plating method capable of controlling a concentration of an additive within a proper range during plating of a substrate is disclosed. The plating method includes: disposing an anode and a substrate, having a via-hole formed in a surface thereof, so as to face each other in a plating solution containing an additive; applying a voltage between the anode and the substrate for filling the via-hole with metal; measuring the voltage applied to the substrate; calculating an amount of change in the voltage per predetermined time; and adjusting a concentration of the additive in the plating solution to keep the amount of change in the voltage within a predetermined control range.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: January 31, 2023
    Assignee: EBARA CORPORATION
    Inventors: Yusuke Tamari, Akira Owatari, Mizuki Nagai, Shingo Yasuda
  • Patent number: 11542629
    Abstract: There is provided a method of plating, comprising: a process of providing a substrate that includes a first face and a second face having different patterns; a plating process of respectively supplying electric current of a first plating current density and electric current of a second plating current density to the first face and to the second face of the substrate, so as to form a plating film on the first face and a plating film on the second face; and a process of, after plating is completed first either on the first face or on the second face, supplying protection current to the face where plating is completed first, wherein the protection current has a smaller current density than the first plating current density or the second plating current density of the electric current supplied to the face where plating is completed first during plating.
    Type: Grant
    Filed: May 25, 2020
    Date of Patent: January 3, 2023
    Assignee: EBARA CORPORATION
    Inventors: Mizuki Nagai, Naoto Takahashi
  • Patent number: 11492721
    Abstract: The agitation of the plating solution may result in spattering of the plating solution. It have been found that the spattered plating solution can be attached even to portions that are not originally brought into contact with the plating solution in the plating apparatus. There is provided an electroplating apparatus for plating a substrate using a substrate holder, the electroplating apparatus comprising at least one bath for storing the substrate, the substrate holder being provided with a hanger shoulder, and a holder contact, and wherein the electroplating apparatus being provided with a cleaning/drying part provided on at least one side of the bath, the cleaning/drying part being provided for cleaning and/or drying at least one of the hanger shoulder, the holder contact and a contact provided to the bath.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: November 8, 2022
    Assignee: EBARA CORPORATION
    Inventors: Kazuhito Tsuji, Mizuki Nagai
  • Publication number: 20220307153
    Abstract: Provided are an anode holder capable of reducing consumption of an additive in a plating apparatus, and a plating apparatus. An anode holder for holding an anode for use in a plating apparatus is provided, and the anode holder includes an inner space formed in the anode holder, to house the anode, a mask including a plurality of holes, and configured to cover a front surface of the inner space, and a diaphragm, at least part of the diaphragm being fixed to the mask in a region of the mask that covers the front surface of the inner space.
    Type: Application
    Filed: May 28, 2020
    Publication date: September 29, 2022
    Inventors: Hiroyuki Kanda, Hironari Ikeda, Masaaki Kimura, Mizuki Nagai
  • Publication number: 20220228285
    Abstract: Provided are a plating method, an insoluble anode and a plating apparatus capable of reducing consumption of an additive in a plating solution, when plating a substrate including a via or a hole for forming a through electrode. The plating method includes the steps of preparing a substrate including a via or a hole for forming a through electrode, preparing a plating solution tank that is divided, by a diaphragm, into an anode tank in which an insoluble anode is disposed and a cathode tank in which the substrate is disposed, and electroplating the substrate with an anode current density when plating the substrate in the plating solution tank being equal to or more than 0.4 ASD and equal to or less than 1.4 ASD.
    Type: Application
    Filed: May 13, 2020
    Publication date: July 21, 2022
    Inventors: Hiroyuki Kanda, Naoki Shimomura, Mizuki Nagai, Shingo Yasuda, Akira Owatari
  • Publication number: 20220186398
    Abstract: There is provided a method of plating, comprising: a process of providing a substrate that includes a first face and a second face having different patterns; a plating process of respectively supplying electric current of a first plating current density and electric current of a second plating current density to the first face and to the second face of the substrate, so as to form a plating film on the first face and a plating film on the second face; and a process of, after plating is completed first either on the first face or on the second face, supplying protection current to the face where plating is completed first, wherein the protection current has a smaller current density than the first plating current density or the second plating current density of the electric current supplied to the face where plating is completed first during plating.
    Type: Application
    Filed: May 25, 2020
    Publication date: June 16, 2022
    Inventors: Mizuki Nagai, Naoto Takahashi
  • Publication number: 20220170175
    Abstract: A plating method capable of saving a substrate in an event of a failure of a transporter, a plating tank, or other component when the substrate is being plated is disclosed. The plating method includes: transporting a plurality of substrates to a plurality of plating tanks, respectively, with a transporter; immersing the plurality of substrates in a plating solution held in the plurality of plating tanks to plate the plurality of substrates; detecting a failure that has occurred in the transporter or a post-processing tank; and replacing the plating solution in the plurality of plating tanks with a preservative liquid to thereby immerse the plurality of substrates in the preservative liquid.
    Type: Application
    Filed: February 17, 2022
    Publication date: June 2, 2022
    Inventors: Ryuya Koizumi, Masashi Shimoyama, Mizuki Nagai
  • Publication number: 20220154363
    Abstract: To partially or locally control a plating film thickness on a polygonal substrate. There is provided a regulation plate for adjusting a current between an anode and the polygonal substrate. This regulation plate includes a main body that has an edge forming a polygonal opening through which the current passes and an attachable/detachable shielding member to shield at least a part of the polygonal opening.
    Type: Application
    Filed: February 1, 2022
    Publication date: May 19, 2022
    Inventors: Naoki Shimomura, Mizuki Nagai
  • Patent number: 11319642
    Abstract: To optimize a location of a power feeding point with the use of a square substrate. There is disclosed a method for determining a location of a power feeding point in an electroplating apparatus. The electroplating apparatus is configured to plate a rectangular substrate having a substrate area of S. The rectangular substrate has opposed two sides coupled to a power supply. The rectangular substrate has a length L of the sides coupled to the power supply and a length W of sides not coupled to the power supply meeting a condition of 0.8×L?W?L. The method includes determining a number N of the power feeding points according to the substrate area S.
    Type: Grant
    Filed: January 26, 2021
    Date of Patent: May 3, 2022
    Assignee: EBARA CORPORATION
    Inventors: Mitsuhiro Shamoto, Mizuki Nagai, Naoto Takahashi
  • Publication number: 20220119981
    Abstract: A plating apparatus including a thief electrode that can be suitably maintained is provided. The plating apparatus includes a substrate holder holding a substrate, a thief electrode supporter supporting a thief electrode to be disposed outside the substrate, a plating tank configured to immerse the substrate in a plating solution for applying an electroplating treatment, a thief electrode maintenance tank configured to perform maintenance of the thief electrode, and a transport module configured to transport the thief electrode supporter to the plating tank and the thief electrode maintenance tank.
    Type: Application
    Filed: October 18, 2021
    Publication date: April 21, 2022
    Inventors: Naoki Shimomura, Mizuki Nagai
  • Patent number: 11286577
    Abstract: A plating method capable of saving a substrate in an event of a failure of a transporter, a plating tank, or other component when the substrate is being plated is disclosed. The plating method includes: transporting a plurality of substrates to a plurality of plating tanks, respectively, with a transporter; immersing the plurality of substrates in a plating solution held in the plurality of plating tanks to plate the plurality of substrates; detecting a failure that has occurred in the transporter or a post-processing tank; and replacing the plating solution in the plurality of plating tanks with a preservative liquid to thereby immerse the plurality of substrates in the preservative liquid.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: March 29, 2022
    Assignee: EBARA CORPORATION
    Inventors: Ryuya Koizumi, Masashi Shimoyama, Mizuki Nagai
  • Patent number: 11280020
    Abstract: According to an embodiment, a substrate holder holds a rectangular substrate and performs electrolytic plating on the substrate. The substrate holder includes a first holding member and a second holding member clamping the substrate between the first holding member and it and having a contact which contacts a peripheral part of the substrate and supplies an electric current to the substrate. The second holding member includes an opening defining a region where an electric field is formed and, at a position farther from the substrate than the opening, a shielding part protruding closer to an inner side than the opening and shielding the peripheral part of a surface of the substrate. The shielding part has a frame shape having a predetermined shielding width in the peripheral part of the substrate, and has, at a corner part thereof, a discontinuous part having a smaller shielding width than surroundings.
    Type: Grant
    Filed: July 3, 2020
    Date of Patent: March 22, 2022
    Assignee: EBARA CORPORATION
    Inventors: Naoki Shimomura, Mizuki Nagai
  • Patent number: 11268207
    Abstract: To partially or locally control a plating film thickness on a polygonal substrate. There is provided a regulation plate for adjusting a current between an anode and the polygonal substrate. This regulation plate includes a main body that has an edge forming a polygonal opening through which the current passes and an attachable/detachable shielding member to shield at least a part of the polygonal opening.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: March 8, 2022
    Assignee: EBARA CORPORATION
    Inventors: Naoki Shimomura, Mizuki Nagai
  • Publication number: 20210391190
    Abstract: The present invention relates to a substrate processing apparatus for processing a substrate with a processing liquid. The substrate processing apparatus according to one embodiment includes: a support portion having a placement surface on which a substrate is placed in a horizontal posture; a processing tank configured to supply a processing liquid to the substrate and process the substrate; an elevating portion configured to raise and lower the support portion in order to lower the substrate into the processing tank and raise the substrate from the processing tank; a gripping portion configured to grip a periphery of the substrate supported by the support portion above the processing tank, and receive the substrate from the support portion; and a first nozzle configured to emit a gas onto the substrate, gripped by the gripping portion, to dry the substrate.
    Type: Application
    Filed: August 20, 2019
    Publication date: December 16, 2021
    Inventors: Hirotaka Ohashi, Toshio Yokoyama, Mizuki Nagai, Ryu Miyamoto
  • Patent number: 11066755
    Abstract: A substrate holder holds a polygonal substrate Wf. A plating bath accommodates the anode holder and the substrate holder. The anode and the substrate are immersed in a plating solution in the plating bath. A control device controls a current flowing between the anode and the substrate. The substrate holder has power feed members placed along respective sides of the polygonal substrate, and there are a plurality of groups of the sides, each group including at least one side, at least one side being different between the groups. The control device can control, on a group-by-group basis, a current to be supplied to the power feed members.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: July 20, 2021
    Assignee: EBARA CORPORATION
    Inventors: Naoki Shimomura, Mizuki Nagai
  • Patent number: 11037791
    Abstract: To suppress thicknesses of a plating film of dies adjacent to a portion in which patterns are not formed on a resist, and improve uniformity of a plated metal layer thickness in a substrate surface. A substrate holder according to the present invention has: a holding surface 57 for holding a substrate; a second holding member 60 configured to have an opening part 63 for exposing the holding surface 57, and to press the substrate placed on the holding surface 57 against the holding surface 57 to thereby hold the substrate; and a shielding plate 65 configured to protrude to an inside of the opening part 63 of the second holding member 60 in a radial direction and to shield a part of the holding surface 57. The shielding plate 65 is configured to be movable along the opening part 63.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: June 15, 2021
    Assignee: EBARA CORPORATION
    Inventors: Mizuki Nagai, Masashi Shimoyama
  • Publication number: 20210164125
    Abstract: A plating method capable of controlling a concentration of an additive within a proper range during plating of a substrate is disclosed. The plating method includes: disposing an anode and a substrate, having a via-hole formed in a surface thereof, so as to face each other in a plating solution containing an additive; applying a voltage between the anode and the substrate for filling the via-hole with metal; measuring the voltage applied to the substrate; calculating an amount of change in the voltage per predetermined time; and adjusting a concentration of the additive in the plating solution to keep the amount of change in the voltage within a predetermined control range.
    Type: Application
    Filed: February 4, 2021
    Publication date: June 3, 2021
    Inventors: Yusuke Tamari, Akira Owatari, Mizuki Nagai, Shingo Yasuda