Patents by Inventor Tomohiro Uno

Tomohiro Uno 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: 20180374815
    Abstract: A bonding wire for a semiconductor device, which is suitable for on-vehicle devices bonding wire, has excellent capillary wear resistance and surface flaw resistance while ensuring high bonding reliability and further satisfies overall performance including ball formability and wedge bondability, the bonding wire including: a Cu alloy core material; a Pd coating layer formed on a surface of the Cu alloy core material; and a Cu surface layer formed on a surface of the Pd coating layer, in which the bonding wire for semiconductor device contains Ni, a concentration of the Ni in the bonding wire is 0.1 to 1.2 wt. %, the Pd coating layer is 0.015 to 0.150 ?m in thickness, and the Cu surface layer is 0.0005 to 0.0070 ?m in thickness.
    Type: Application
    Filed: June 24, 2016
    Publication date: December 27, 2018
    Inventors: Tetsuya OYAMADA, Tomohiro UNO, Daizo ODA, Takashi YAMADA
  • Publication number: 20180374816
    Abstract: The present invention has as its object the provision of a bonding wire for semiconductor devices mainly comprised of Ag, in which bonding wire for semiconductor devices, the bond reliability demanded for high density mounting is secured and simultaneously a sufficient, stable bond strength is realized at a ball bond, no neck damage occurs even in a low loop, the leaning characteristic is excellent, and the FAB shape is excellent. To solve this problem, the bonding wire for semiconductor devices according to the present invention contains one or more of Be, B, P, Ca, Y, La, and Ce in a total of 0.031 at % to obtain a 0.180 at %, further contains one or more of In, Ga, and Cd in a total of 0.05 at % to 5.00 at %, and has a balance of Ag and unavoidable impurities.
    Type: Application
    Filed: September 23, 2016
    Publication date: December 27, 2018
    Inventors: Daizo ODA, Takumi OHKABE, Teruo HAIBARA, Takashi YAMADA, Tetsuya OYAMADA, Tomohiro UNO
  • Patent number: 10137534
    Abstract: A bonding wire includes a Cu alloy core material, and a Pd coating layer formed on the Cu alloy core material. The bonding wire contains at least one element selected from Ni, Zn, Rh, In, Ir, and Pt. A concentration of the elements in total relative to the entire wire is 0.03% by mass or more and 2% by mass or less. When measuring crystal orientations on a cross-section of the core material in a direction perpendicular to a wire axis of the bonding wire, a crystal orientation <100> angled at 15 degrees or less to a wire axis direction has a proportion of 50% or more among crystal orientations in the wire axis direction. An average crystal grain size in the cross-section of the core material in the direction perpendicular to the wire axis of the bonding wire is 0.9 ?m or more and 1.3 ?m or less.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: November 27, 2018
    Assignees: Nippon Micrometal Corporation, Nippon Steel & Sumikin Materials Co., Ltd.
    Inventors: Takashi Yamada, Daizo Oda, Teruo Haibara, Ryo Oishi, Kazuyuki Saito, Tomohiro Uno
  • Patent number: 10121965
    Abstract: An alternating stack of insulating layers and electrically conductive layers is formed over a substrate. Sidewalls of the electrically conductive layers are laterally recessed to form laterally recessed regions. After formation of a conformal barrier material layer in the laterally recessed regions and on the sidewalls of the insulating layers, an amorphous precursor memory material layer is deposited in lateral cavities and over the conformal barrier material layer. An anneal process is performed to selectively crystallize portions of the amorphous precursor memory material layer in the lateral cavities into crystalline memory material portions while not crystallizing portions of the amorphous precursor memory material outside the lateral cavities. Remaining amorphous portions of the amorphous precursor memory material layer are removed selective to the crystalline memory material portions. A vertical conductive line is formed on the crystalline memory material portions.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: November 6, 2018
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Tomohiro Uno, Shiori Kataoka, Yusuke Yoshida
  • Patent number: 10121758
    Abstract: A bonding wire for a semiconductor device includes a Cu alloy core material and a Pd coating layer on a surface of the Cu alloy core material, and contains Ga and Ge of 0.011 to 1.2% by mass in total, which is able to increase bonding longevity of the ball bonded part in the high-temperature, high-humidity environment, and thus to improve the bonding reliability. The thickness of the Pd coating layer is preferably 0.015 to 0.150 ?m. When the bonding wire further contains one or more elements of Ni, Ir, and Pt in an amount, for each element, of 0.011 to 1.2% by mass, it is able to improve the reliability of the ball bonded part in a high-temperature environment at 175° C. or more. When an alloy skin layer containing Au and Pd is further formed on a surface of the Pd coating layer, wedge bondability improves.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: November 6, 2018
    Assignees: Nippon Micrometal Corporation, Nippon Steel & Sumikin Materials Co., Ltd.
    Inventors: Daizo Oda, Motoki Eto, Kazuyuki Saito, Teruo Haibara, Ryo Oishi, Takashi Yamada, Tomohiro Uno
  • Patent number: 10121764
    Abstract: The present invention provides a ball forming method for forming a ball portion at a tip of a bonding wire which includes a core material mainly composed of Cu, and a coating layer mainly composed of Pd and formed over a surface of the core material, wherein the ball portion is formed in non-oxidizing atmosphere gas including hydrocarbon which is gas at room temperature and atmospheric pressure, the method being capable of improving Pd coverage on a ball surface in forming a ball at a tip of the Pd-coated Cu bonding wire.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: November 6, 2018
    Assignees: Nippon Micrometal Corporation, Nippon Steel & Sumikin Materials Co., Ltd.
    Inventors: Noritoshi Araki, Takashi Yamada, Teruo Haibara, Ryo Oishi, Tomohiro Uno
  • Patent number: 10115899
    Abstract: A method is provided that includes forming a word line above a substrate, the word line disposed in a first direction, forming a bit line above the substrate, the bit line disposed in a second direction perpendicular to the first direction, forming a nonvolatile memory material between the word line and the bit line by selectively forming a conductive oxide material layer adjacent the word line, and forming a semiconductor material layer adjacent the bit line, and forming a memory cell comprising the nonvolatile memory material at an intersection of the bit line and the word line.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: October 30, 2018
    Assignee: SanDisk Technologies LLC
    Inventors: Yusuke Yoshida, Tomohiro Uno, Tomoyuki Obu, Takeki Ninomiya, Toshihiro Iizuka
  • Publication number: 20180282834
    Abstract: The present invention provide a ferritic stainless steel foil high in stretch-expand formability and further small in anisotropy of deformation with respect to stretch-expand forming even with ultrathin steel foil with a thickness of 60 ?m or less. The present invention is a ferritic stainless steel foil having a thickness of 5 ?m to 60 ?m, wherein a recrystallization rate of said stainless steel foil is 90% to 100%, and in an orientation distribution function obtained by analysis of a crystalline texture of said stainless steel foil, when a Euler angle ?2 is 45°±10°, at the plane expressed by a Euler angle ? of 53.4°±10°, the maximum peak strength ratio in the peak strength ratios shown by orientations corresponding to the Euler angle ?1 is 25 or less, where the Euler angle ?1 is 0 to 90°.
    Type: Application
    Filed: August 16, 2016
    Publication date: October 4, 2018
    Applicant: NIPPON STEEL & SUMIKIN MATERIALS CO., LTD.
    Inventors: Hiroto UNNO, Naoya SAWAKI, Naoki FUJIMOTO, Masahiro FUKUDA, Tomohiro UNO, Toru INAGUMA
  • Patent number: 10089201
    Abstract: A virtualization controller identifies a node that manages a segment to be accessed, and instructs the node to access the segment. A mirror controller of the node instructed to access the segment writes data in the segment managed by the node and in a segment having a mirror relation with the segment managed by the node.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: October 2, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Hiroyuki Yamashita, Tomohiro Uno, Yasuhito Kikuchi, Yoshimasa Mishuku
  • Publication number: 20180237882
    Abstract: Provided is an austenitic stainless steel foil that demonstrates a high degree of stretch formability and little deformation anisotropy with respect to stretch forming despite having a sheet thickness of 60 ?m or less. The austenitic stainless steel foil of the present invention has a sheet thickness of 5 ?m to 60 ?m, a recrystallization rate of 90% to 100%, and a texture in which the total of the area ratio of a crystal orientation in which the difference in orientation from the {112}<111> orientation is within 10°, the area ratio of a crystal orientation in which the difference in orientation from the {110}<112> orientation is within 10°, and the area ratio of a crystal orientation in which the difference in orientation from the {110}<001> orientation is within 10°, in a measuring field thereof, is 20% or less.
    Type: Application
    Filed: August 17, 2016
    Publication date: August 23, 2018
    Applicant: NIPPON STEEL & SUMIKIN MATERIALS CO., LTD.
    Inventors: Hiroto UNNO, Naoya SAWAKI, Naoki FUJIMOTO, Masahiro FUKUDA, Tomohiro UNO, Toru INAGUMA
  • Publication number: 20180229476
    Abstract: The present invention provide a ferritic stainless steel foil having a high thickness precision even with a thickness 60 ?m or less ultrathin stainless steel foil and simultaneously having a plastic deformation ability and good elongation at break, that is, having a good press-formability (deep drawing ability). The present invention is a stainless steel foil having a thickness of 5 ?m to 60 ?m, wherein a recrystallization ratio of said stainless steel foil is 90% to 100%, a surface layer of said stainless steel foil has a nitrogen concentration of 1.0 mass % or less, three or more crystal grains are contained in the thickness direction of said stainless steel foil, an average crystal grain diameter “d” of said crystal grains is 1 ?m to 10 ?m, and, when said thickness is “t” (?m), an area ratio of crystal grains having a crystal grain diameter of t/3 (?m) or more is 20% or less.
    Type: Application
    Filed: August 17, 2016
    Publication date: August 16, 2018
    Applicant: NIPPON STEEL & SUMIKIN MATERIALS CO., LTD.
    Inventors: Hiroto UNNO, Naoya SAWAKI, Naoki FUJIMOTO, Masahiro FUKUDA, Tomohiro UNO, Toru INAGUMA
  • Patent number: 10032741
    Abstract: There is provided a Cu bonding wire having a Pd coating layer on a surface thereof, that improves bonding reliability of a ball bonded part in a high-temperature and high-humidity environment and is suitable for on-vehicle devices. The bonding wire for a semiconductor device includes a Cu alloy core material and a Pd coating layer formed on a surface of the Cu alloy core material, and the bonding wire contains In of 0.011 to 1.2% by mass and has the Pd coating layer of a thickness of 0.015 to 0.150 ?m. With this configuration, it is able to increase the bonding longevity of a ball bonded part in a high-temperature and high-humidity environment, and thus to improve the bonding reliability. When the Cu alloy core material contains one or more elements of Pt, Pd, Rh and Ni in an amount, for each element, of 0.05 to 1.2% by mass, it is able to increase the reliability of a ball bonded part in a high-temperature environment of 175° C. or more.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: July 24, 2018
    Assignees: NIPPON MICROMETAL CORPORATION, NIPPON STEEL & SUMIKIN MATERIALS CO., LTD.
    Inventors: Daizo Oda, Motoki Eto, Takashi Yamada, Teruo Haibara, Ryo Oishi, Tomohiro Uno, Tetsuya Oyamada
  • Publication number: 20180133843
    Abstract: A bonding wire for a semiconductor device includes a Cu alloy core material and a Pd coating layer formed on a surface thereof. Containing an element that provides bonding reliability in a high-temperature environment improves the bonding reliability of the ball bonded part in high temperature. Furthermore, making an orientation proportion of a crystal orientation <100> angled at 15 degrees or less to a wire longitudinal direction among crystal orientations in the wire longitudinal direction 30% or more when measuring crystal orientations on a cross-section of the core material in a direction perpendicular to a wire axis of the bonding wire, and making an average crystal grain size in the cross-section of the core material in the direction perpendicular to the wire axis of the bonding wire 0.9 to 1.5 ?m provides a strength ratio of 1.6 or less.
    Type: Application
    Filed: December 21, 2017
    Publication date: May 17, 2018
    Inventors: Takashi YAMADA, Daizo ODA, Teruo HAIBARA, Ryo OISHI, Kazuyuki SAITO, Tomohiro UNO
  • Publication number: 20180130763
    Abstract: A bonding wire for a semiconductor device, characterized in that the bonding wire includes a Cu alloy core material and a Pd coating layer formed on a surface of the Cu alloy core material, the bonding wire contains an element that provides bonding reliability in a high-temperature environment, and a strength ratio defined by the following Equation (1) is 1.1 to 1.6: Strength ratio=ultimate strength/0.2% offset yield strength.
    Type: Application
    Filed: June 14, 2016
    Publication date: May 10, 2018
    Inventors: Takashi YAMADA, Daizo ODA, Teruo HAIBARA, Ryo OISHI, Kazuyuki SAITO, Tomohiro UNO
  • Publication number: 20180122765
    Abstract: A bonding wire for a semiconductor device includes a Cu alloy core material and a Pd coating layer on a surface of the Cu alloy core material, and contains Ga and Ge of 0.011 to 1.2% by mass in total, which is able to increase bonding longevity of the ball bonded part in the high-temperature, high-humidity environment, and thus to improve the bonding reliability. The thickness of the Pd coating layer is preferably 0.015 to 0.150 ?m. When the bonding wire further contains one or more elements of Ni, Ir, and Pt in an amount, for each element, of 0.011 to 1.2% by mass, it is able to improve the reliability of the ball bonded part in a high-temperature environment at 175° C. or more. When an alloy skin layer containing Au and Pd is further formed on a surface of the Pd coating layer, wedge bondability improves.
    Type: Application
    Filed: December 22, 2017
    Publication date: May 3, 2018
    Inventors: Daizo ODA, Motoki ETO, Kazuyuki SAITO, Teruo HAIBARA, Ryo OISHI, Takashi YAMADA, Tomohiro UNO
  • Publication number: 20180096965
    Abstract: The present invention provides a ball forming method for forming a ball portion at a tip of a bonding wire which includes a core material mainly composed of Cu, and a coating layer mainly composed of Pd and formed over a surface of the core material, wherein the ball portion is formed in non-oxidizing atmosphere gas including hydrocarbon which is gas at room temperature and atmospheric pressure, the method being capable of improving Pd coverage on a ball surface in forming a ball at a tip of the Pd-coated Cu bonding wire.
    Type: Application
    Filed: April 14, 2016
    Publication date: April 5, 2018
    Applicants: NIPPON MICROMETAL CORPORATION, NIPPON STEEL & SUMIKIN MATERIALS CO., LTD.
    Inventors: Noritoshi ARAKI, Takashi YAMADA, Teruo HAIBARA, Ryo OISHI, Tomohiro UNO
  • Patent number: 9887172
    Abstract: A bonding wire for a semiconductor device includes a Cu alloy core material and a Pd coating layer on a surface of the Cu alloy core material, and contains Ga and Ge of 0.011 to 1.2% by mass in total, which is able to increase bonding longevity of the ball bonded part in the high-temperature, high-humidity environment, and thus to improve the bonding reliability. The thickness of the Pd coating layer is preferably 0.015 to 0.150 ?m. When the bonding wire further contains one or more elements of Ni, Ir, and Pt in an amount, for each element, of 0.011 to 1.2% by mass, it is able to improve the reliability of the ball bonded part in a high-temperature environment at 175° C. or more. When an alloy skin layer containing Au and Pd is further formed on a surface of the Pd coating layer, wedge bondability improves.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: February 6, 2018
    Assignees: NIPPON MICROMETAL CORPORATION, NIPPON STEEL & SUMIKIN MATERIALS CO., LTD.
    Inventors: Daizo Oda, Motoki Eto, Kazuyuki Saito, Teruo Haibara, Ryo Oishi, Takashi Yamada, Tomohiro Uno
  • Publication number: 20180033760
    Abstract: A conductive joining material and conductive joined structure for joining two joining members by a joining layer using metal nanoparticles at the time of which even if there is a difference in the amounts of heat expansion due to a difference in linear thermal expansion coefficients between these two joining members and further use at a high temperature is sought, it is possible to adjust the amount of heat expansion of the joining layer to a suitable value between the two joining members to ease the thermal stress occurring at the joining layer and possible to sufficiently hold the joint strength between the two joining members are provided.
    Type: Application
    Filed: January 26, 2016
    Publication date: February 1, 2018
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Shinji ISHIKAWA, Yoshiaki HAGIWARA, Norie MATSUBARA, Tomohiro UNO, Takayuki SHIMIZU
  • Patent number: 9883588
    Abstract: According to this invention, an oriented copper plate which has a highly developed cube texture and has strength and breaking elongation greater than those of a conventional material having a cube texture, a copper-clad laminate, a flexible circuit board that is excellent in terms of folding flexibility, and an electronic device are provided, and a process for producing the oriented copper plate is established. This invention relates: an oriented copper plate, which contains 0.03% by mass to 1.0% by mass of Cr, the remainder of which is composed of copper and inevitable impurities, wherein the copper plate has a <100> main orientation so that the area percentage of a <100> preferred orientation region is not less than 60.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: January 30, 2018
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Keiichi Kimura, Tomohiro Uno, Kazuaki Kaneko
  • Publication number: 20170365576
    Abstract: The present invention provides a bonding wire capable of simultaneously satisfying ball bonding reliability and wedge bondability required of bonding wires for memories, the bonding wire including a core material containing one or more of Ga, In, and Sn for a total of 0.1 to 3.0 at % with a balance being made up of Ag and incidental impurities; and a coating layer formed over a surface of the core material, containing one or more of Pd and Pt, or Ag and one or more of Pd and Pt, with a balance being made up of incidental impurities, wherein the coating layer is 0.005 to 0.070 ?m in thickness.
    Type: Application
    Filed: December 11, 2015
    Publication date: December 21, 2017
    Inventors: Tetsuya OYAMADA, Tomohiro UNO, Daizo ODA, Takashi YAMADA