Patents by Inventor Jun Yoshikawa

Jun Yoshikawa 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: 9277637
    Abstract: An apparatus for plasma treatment contains a process vessel provided with a mounting table for mounting a substrate, a first gas supplying unit configured to supply a first gas into the process vessel, a first plasma generating unit configured to convert at least a part of the first gas to a first plasma, a second gas supplying unit configured to supply a second gas into the process vessel, and a second plasma generating unit configured to convert at least a part of the second gas to a second plasma. A height of ea an inlet of the second gas from the mounting table is lower than a height of an inlet of the first gas from the mounting table.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: March 1, 2016
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Toshihisa Nozawa, Caizhong Tian, Masaru Sasaki, Naoki Mihara, Naoki Matsumoto, Kazuki Moyama, Jun Yoshikawa
  • Publication number: 20160049469
    Abstract: A supporting substrate for a composite substrate comprises a ceramic and has a polished surface for use in bonding. An orientation degree of the ceramic forming the supporting substrate .at the polished surface is 50% or higher, and an aspect ratio of each crystal grain included in the supporting substrate is 5.0 or less.
    Type: Application
    Filed: October 28, 2015
    Publication date: February 18, 2016
    Inventors: Jun YOSHIKAWA, Mikiya ICHIMURA, Katsuhiro IMAI
  • Publication number: 20160043261
    Abstract: Disclosed is a photovoltaic device comprising a substrate composed of an oriented polycrystalline zinc oxide sintered body in a plate shape, a photovoltaic layer provided on the substrate, and an electrode provided on the photovoltaic layer. According to the present invention, a photovoltaic device having high photoelectric conversion efficiency can be inexpensively provided.
    Type: Application
    Filed: October 22, 2015
    Publication date: February 11, 2016
    Inventors: Mikiya ICHIMURA, Jun YOSHIKAWA, Katsuhiro IMAI
  • Publication number: 20150376024
    Abstract: Provided is a zinc oxide-based sputtering target capable of improving the film formation rate while suppressing arcing in the formation of a zinc oxide-based transparent conductive film by sputtering. This zinc oxide-based sputtering target includes a zinc oxide-based sintered body mainly including zinc oxide crystal grains, and has a degree of (002) orientation of 50% or greater at a sputtering surface and a density of 5.30 g/cm3 or greater.
    Type: Application
    Filed: September 9, 2015
    Publication date: December 31, 2015
    Inventors: Jun YOSHIKAWA, Katsuhiro IMAI, Koichi KONDO, Koki KANNO
  • Publication number: 20150380222
    Abstract: Provided is a zinc oxide-based sputtering target that enables production of a zinc oxide-based sputtered film having higher transparency and electrical conductivity. The zinc oxide-based sputtering target of the present invention is composed of a zinc oxide-based sintered body including zinc oxide crystal grains as a main phase and spinel phases as a dopant-containing grain boundary phase, and the zinc oxide-based sputtering target has a degree of (002) orientation of ZnO of 80% or greater at a sputtering surface, a density of the zinc oxide-based sintered body of 5.50 g/cm3 or greater, the number of the spinel phases per area of 20 counts/100 ?m2 or greater, and a spinel phase distribution index of 0.40 or less.
    Type: Application
    Filed: September 9, 2015
    Publication date: December 31, 2015
    Inventors: Jun YOSHIKAWA, Hirofumi YAMAGUCHI, Tsutomu NANATAKI
  • Publication number: 20150372191
    Abstract: Provided is a surface light-emitting device comprising a substrate composed of an oriented polycrystalline zinc oxide sintered body in a plate shape, a light emitting functional layer provided on the substrate, and an electrode provided on the light emitting functional layer. According to the present invention, a surface light-emitting device having high luminous efficiency can be inexpensively provided.
    Type: Application
    Filed: June 12, 2015
    Publication date: December 24, 2015
    Inventors: Morimichi WATANABE, Katsuhiro IMAI, Jun YOSHIKAWA, Tsutomu NANATAKI, Takashi YOSHINO, Yukihisa TAKEUCHI
  • Publication number: 20150294839
    Abstract: Disclosed is a plasma processing apparatus including a processing container, a placing table, a central introduction section, and a peripheral introduction section. The central introduction section is provided above the placing table. The central introduction introduces a gas toward the placing table along the axis passing through a center of the placing table. The peripheral introduction section is provided between the central introduction section and a top surface of the placing table in a height direction. In addition, the peripheral introduction section is formed along a side wall. The peripheral introduction section provides a plurality of gas ejection ports arranged in a circumferential direction with respect to the axis. The plurality of gas ejection ports of the peripheral introduction section extend away from the placing table as the gas ejection ports come close to the axis.
    Type: Application
    Filed: April 8, 2015
    Publication date: October 15, 2015
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Hiroyuki TAKABA, Tetsuya NISHIZUKA, Naoki MATSUMOTO, Michitaka AITA, Takashi MINAKAWA, Kazuki TAKAHASHI, Jun YOSHIKAWA, Motoshi FUKUDOME, Naoki MIHARA, Hiroyuki KONDO
  • Publication number: 20150228459
    Abstract: In a plasma processing apparatus of an exemplary embodiment, energy of microwaves is introduced from an antenna into the processing container through a dielectric window. The plasma processing apparatus includes a central introducing unit and a peripheral introducing unit. A central introduction port of the central introducing unit injects a gas just below the dielectric window. A plurality of peripheral introduction ports of the peripheral introducing unit injects a gas towards a periphery of the placement region. The central introducing unit is connected to with a plurality of first gas sources including a reactive gas source and a rare gas source through a plurality of first flow rate control units. The peripheral introducing unit is connected to with a plurality of second gas sources including a reactive gas source and a rare gas source through a plurality of second flow rate control units.
    Type: Application
    Filed: September 20, 2013
    Publication date: August 13, 2015
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Naoki Matsumoto, Yugo Tomita, Naoki Mihara, Kazuki Takahashi, Michitaka Aita, Jun Yoshikawa, Takahiro Senda, Yoshiyasu Sato, Kazuyuki Kato, Kenji Sudou, Hitoshi Mizusugi
  • Publication number: 20150211125
    Abstract: Disclosed is provides a plasma processing apparatus that processes a workpiece. The plasma processing apparatus includes: a processing container configured to accommodate the workpiece; a coaxial waveguide configured to transmit microwaves generated in a microwave generator; and a slow wave plate configured to adjust a wavelength of the microwaves transmitted from the coaxial waveguide and to introduce the microwaves into the processing container. A lower end portion of an inner conductor of the coaxial waveguide has a tapered shape of which a diameter increases downwardly, the slow wave plate has an annular shape in a plan view, and the inner surface of the slow wave plate encloses the lower end portion of the inner conductor and is located more outside than an inner surface of an outer conductor of the coaxial waveguide in a radial direction.
    Type: Application
    Filed: January 26, 2015
    Publication date: July 30, 2015
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Jun YOSHIKAWA, Michitaka AITA
  • Publication number: 20150206712
    Abstract: An antenna includes a dielectric window and a slot plate provided at one surface of the dielectric window. The slot plate includes a plurality of slot pairs each being formed of two slots. The slot pairs are concentrically disposed about a centroid position of the slot plate and provided at positions where straight lines extending from the centroid position of the slot plate and passing through each slot pair are not overlapped with each other.
    Type: Application
    Filed: April 1, 2015
    Publication date: July 23, 2015
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Naoki MATSUMOTO, Koji KOYAMA, Jun YOSHIKAWA
  • Publication number: 20150172364
    Abstract: There is provided an information processing apparatus including a control unit configured to acquire and output information of an operation screen on a display unit from a relay apparatus storing the information of the operation screen, the relay apparatus being configured to relay at least one moving image from a moving image server, in which the moving image is stored, to a different device via a network, request the thumbnail image to be arranged in the region of the operation screen to the relay apparatus, arrange the acquired thumbnail image in the region if the thumbnail image requested is acquired, and request a thumbnail image the acquisition of which fails until the acquisition is succeeded if the acquisition is failed due to the fact that the thumbnail image is not present.
    Type: Application
    Filed: November 11, 2014
    Publication date: June 18, 2015
    Applicant: SONY CORPORATION
    Inventors: Shigeki TOYODA, Jun YOSHIKAWA, Shigeki WAKATANI
  • Publication number: 20150155139
    Abstract: A slot plate is provided at one surface of a dielectric window. The other surface of the dielectric window includes a flat surface surrounded by an annular first recess, and a plurality of second recesses formed at a bottom surface of the first recess. An antenna including the dielectric window and the slot plate provided at one surface of the dielectric window can be applied to the plasma processing apparatus.
    Type: Application
    Filed: December 1, 2014
    Publication date: June 4, 2015
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Jun YOSHIKAWA, Naoki MATSUMOTO, Masayuki SHINTAKU, Koji KOYAMA, Naoki MIHARA, Yugo TOMITA
  • Patent number: 9048070
    Abstract: A dielectric window for a plasma treatment device for a plasma treatment device that uses microwaves as a plasma source. The dielectric window is circular-plate-shaped and allows microwaves to propagate. The dielectric window has a recess that has an opening on the lower-surface side and that indents in the plate thickness direction of the dielectric window, and is provided to the lower surface at which plasma is generated when the dielectric window is provided to the plasma treatment device. The recess has a bottom surface extending in the direction perpendicular to the plate thickness direction, and a side surface extending in the plate thickness direction from the circumferential edge of the bottom surface toward the opening of the recess. In addition, an inclined surface extends at an incline relative to the plate thickness direction from the opening-side circumferential edge of the side surface toward the opening of the recess.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: June 2, 2015
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Caizhong Tian, Naoki Matsumoto, Koji Koyama, Naoki Mihara, Kazuki Takahashi, Jun Yoshikawa, Kazuki Moyama, Takehiro Tanikawa
  • Publication number: 20150144956
    Abstract: Provided is a self-supporting gallium nitride substrate useful as an alternative material for a gallium nitride single crystal substrate, which is inexpensive and also suitable for having a large area. This substrate is composed of a plate composed of gallium nitride-based single crystal grains, wherein the plate has a single crystal structure in the approximately normal direction. This substrate can be manufactured by a method comprising providing an oriented polycrystalline sintered body; forming a seed crystal layer composed of gallium nitride on the sintered body so that the seed crystal layer has crystal orientation mostly in conformity with the crystal orientation of the sintered body; forming a layer with a thickness of 20 ?m or greater composed of gallium nitride-based crystals on the seed crystal layer so that the layer has crystal orientation mostly in conformity with crystal orientation of the seed crystal layer; and removing the sintered body.
    Type: Application
    Filed: September 29, 2014
    Publication date: May 28, 2015
    Inventors: Morimichi WATANABE, Jun YOSHIKAWA, Tsutomu NANATAKI, Katsuhiro IMAI, Tomohiko SUGIYAMA, Takashi YOSHINO, Yukihisa TAKEUCHI, Kei SATO
  • Publication number: 20150099122
    Abstract: The present invention provides a zinc oxide powder that enables a high degree of orientation, and highly uniform dispersion of an additive substance, to be simultaneously achieved in a green body or a sintered body. The zinc oxide powder of the present invention comprises a plurality of plate-like zinc oxide particles and has a volume-based D50 average particle diameter of 1 to 5 ?m and a specific surface area of 1 to 5 m2/g. The zinc oxide powder has a degree of orientation of the (002) plane of 40% or greater when two-dimensionally arrayed into a monolayer on a substrate.
    Type: Application
    Filed: December 15, 2014
    Publication date: April 9, 2015
    Inventors: Jun YOSHIKAWA, Katsuhiro IMAI, Koichi KONDO
  • Patent number: 8988012
    Abstract: In a dielectric window 41 for a plasma processing apparatus, a first dielectric window recess 47 is formed on an outer region of a surface of the dielectric window 41 in a diametrical direction of the dielectric window 41 at a side where plasma is generated, and the first dielectric window recess 47 is extended in a ring shape and has a tapered shape inwardly in a thickness direction of the dielectric window 41. A multiple number of second dielectric window recesses 53a to 53g are formed between the center of the dielectric window 41 and the first dielectric window recess 47, and each of the second dielectric window recesses 53a to 53g is recessed inwardly in the thickness direction of the dielectric window 41 from the surface of the dielectric window 41.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: March 24, 2015
    Assignee: Tokyo Electron Limited
    Inventors: Wataru Yoshikawa, Naoki Matsumoto, Jun Yoshikawa
  • Publication number: 20150072804
    Abstract: In an iron golf club head with a face portion and a neck portion integrally molded by forging, the iron golf club head is made of an iron steel material at least containing 0.30% by weight or less of carbon and 0.0005% by weight to 0.003% by weight of boron. The face portion has been subjected to quenching processing.
    Type: Application
    Filed: September 8, 2014
    Publication date: March 12, 2015
    Inventors: Kazuhiro Doi, Jun Yoshikawa
  • Publication number: 20150017811
    Abstract: An exemplary embodiment provides a method which etches a second layer in a base body to be processed having a first layer containing Ni and Si and a second layer containing Si and N which are exposed to a surface thereof. The method according to the exemplary embodiment includes (a) preparing a base body to be processed in a processing chamber, and (b) supplying a first processing gas which contains carbon and fluorine but does not contain oxygen into the processing chamber and generating plasma in the processing chamber.
    Type: Application
    Filed: November 9, 2012
    Publication date: January 15, 2015
    Inventors: Masaki Inoue, Toshihisa Ozu, Takehiro Tanikawa, Jun Yoshikawa
  • Publication number: 20150013913
    Abstract: A microwave plasma processing apparatus including a processing space; a dielectric window having a facing surface facing the processing space; and an antenna plate installed on a surface of the dielectric window opposite to the facing surface, and formed with a plurality of slots configured to radiate microwaves for plasma excitation to the processing space through the dielectric window. The plurality of slots includes a first slot group configured to transmit microwaves guided to a center side of the dielectric window, and a second slot group configured to transmit microwaves guided to a peripheral edge side of the dielectric window. The dielectric window includes a first concave portion in a region corresponding to the first slot group of the antenna plate on the facing surface, and a second concave portion in a region corresponding to the second slot group of the antenna plate on the facing surface.
    Type: Application
    Filed: July 9, 2014
    Publication date: January 15, 2015
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Toshihiko IWAO, Jun YOSHIKAWA
  • Patent number: 8920596
    Abstract: In a plasma processing apparatus for processing a substrate by plasmatizing a process gas introduced into a processing container, an introducing unit which introduces the process gas is formed on a ceiling surface of the processing container; a gas retention portion which gathers the process gas supplied from the outside of the processing container through a supply passage, and a plurality of gas ejection holes which allow communication between the gas retention portion and the inside of the processing container are formed in the introducing unit; a gas ejection hole is not formed in a location of the gas retention portion that faces an opening of the supply passage; and a cross section of each of the gas ejection holes has a flat shape.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: December 30, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Naoki Mihara, Naoki Matsumoto, Jun Yoshikawa, Kazuo Murakami