Patents by Inventor Eishi Gofuku

Eishi Gofuku 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: 20090014881
    Abstract: For the purpose of removing an oxide film on the surface of a varying metal electroconductive material used for wiring in a semiconductor device without inflicting damage on a peripheral structure, the oxide film formed on the surface of a metal electroconductive region 12 is subjected to a reducing treatment that is effected by placing the metal electroconductive region 12 in a reducing treatment chamber 22, causing an oxygen pump 30 to introduce into the reducing treatment chamber 22 an inert gas having at least an oxygen partial pressure thereof suppressed to 1×10?13 atmosphere or less and heating the metal electroconductive region 12 with a heating device 25.
    Type: Application
    Filed: January 27, 2006
    Publication date: January 15, 2009
    Inventors: Kazuhiko Endo, Naoki Shirakawa, Eishi Gofuku, Shinichi Ikeda, Yoshiyuki Yoshida
  • Patent number: 5771158
    Abstract: The signal connecting through vias are provided on an edge side of a multilayer printed circuit board along a longitudinal direction thereof, and the signal wiring of the respective layers of the signal wiring layer is inclined with respected to the arrangement of the through vias.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: June 23, 1998
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Keitarou Yamagishi, Akio Gotoh, Akihiro Miura, Eiji Mukai, Eishi Gofuku
  • Patent number: 5459594
    Abstract: An apparatus for ON-OFF inspection on a scattering-type liquid crystal display panel is provided which is of decreased size and is capable of easily inspecting the ON-OFF states of the liquid crystal display panel by assuring enhanced visuality of an image displayed for inspection. The inspection apparatus includes: support means for supporting the liquid crystal display panel; signal applying means for applying an electric signal to a pixel of the liquid crystal display panel; illumination means for illuminating the liquid crystal display panel, the illumination means comprising a flat photoconductive member and a light source mounted on a side wall of the photoconductive member; a light-absorptive layer disposed on one side of the photoconductive member with a gap therebetween; and means for making the other side of the photoconductive member come into close contact with the liquid crystal display panel.
    Type: Grant
    Filed: September 20, 1994
    Date of Patent: October 17, 1995
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kunifumi Nakanishi, Masaaki Nakano, Mitsuyuki Takada, Eishi Gofuku, Mutsuhiro Shima, Toshio Ohnawa, Hirofumi Ouchida
  • Patent number: 5269868
    Abstract: A method for separating bonded substrates which are prepared by facing a plurality of substrates and bonding the substrates by an adhesive features irradiating an energy beam on the bonding portions of the bonded substrates from above one of the bonded substrates to separate the one substrate and the other substrate. The energy beam has the property of being transmitted through the one substrate and of being absorbed into the adhesive.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: December 14, 1993
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Eishi Gofuku, Hayato Takasago
  • Patent number: 5175399
    Abstract: Disclosed herein is a wiring panel constructed with a substrate; an electrically conductive member laminated on the substrate and principally composed of copper; and an insulating member composed of an organic substance, wherein a very small amount of a non-metallic element is incorporated into the electrically conductive member, and a very small amount of a metal element is incorporated into the insulating member.Also disclosed herein is a method for producing a wiring panel constructed with a substrate, an electrically conductive member provided on the substrate and composed of copper as the principal constituent, and an insulating layer of an organic substance covering the conductive member, which comprises steps of: applying onto the surface of the electrically conductive member a surface-reforming layer which functions to suppress electron transfer through the surface of the electrically conductive member, and thereafter forming the organic insulating layer on the electrically conductive member.
    Type: Grant
    Filed: August 27, 1990
    Date of Patent: December 29, 1992
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Mitsumasa Mori, Eishi Gofuku, Mitsuyuki Takada, Kurumi Miyake, Yoshiyuki Morihiro, Masanobu Kohara
  • Patent number: 5173844
    Abstract: A circuit board includes a copper plate and an insulating layer of photosensitive polyimide resin formed on the copper plate, the insulating layer leaving an exposed portion of a surface of the copper plate where an LSI is to be mounted. After Au plating is applied to the exposed surface of the copper plate, the LSI is mounted fixedly. A connection pattern having bonding pads is formed by copper plating on the insulating layer. The bonding pads and the LSI are connected by Au wire bonding on the Au plating applied on the bonding pads.
    Type: Grant
    Filed: November 19, 1991
    Date of Patent: December 22, 1992
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kohei Adachi, Mitsuyuki Takada, Atsushi Endo, Eishi Gofuku, Hayato Takasago
  • Patent number: 5081562
    Abstract: A circuit board includes a copper plate and an insulating layer of photosensitive polyimide resin formed on the copper plate, the insulating layer leaving an exposed portion of a surface of the copper plate where an LSI is to be mounted. After Au plating is applied to the exposed surface of the copper plate, the LSI is mounted fixedly. A connection pattern having bonding pads is formed by copper plating on the insulating layer. The bonding pads and the LSI are connected by Au wire bonding on the Au plating applied on the bonding pads.
    Type: Grant
    Filed: June 19, 1990
    Date of Patent: January 14, 1992
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kohei Adachi, Mitsuyuki Takada, Eishi Gofuku, Hayato Takasago, Atsushi Endo
  • Patent number: 5069745
    Abstract: A process for preparing a combined wiring substrate is carried out by bonding with an adhesive agent the end surfaces of the mutually opposing sides of a plurality of substrates each having a pattern of wiring on its major surface, and by connecting electrically parts of the pattern of wiring which oppose each other by interposing the bonding portion.
    Type: Grant
    Filed: August 24, 1990
    Date of Patent: December 3, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hirofumi Ohuchida, Eishi Gofuku, Hayato Takasago, Akira Ishizu, Toshio Tobita, Mitsuyuki Takada
  • Patent number: 5059941
    Abstract: A resistor device includes a thick-film resistor which includes a mixture of electrical conductive material and glass, and which has the electrical conductive material at a surface portion exposed; and electrodes which are deposited on the thick-film resistor to be connected to the exposed electrical conductive material.
    Type: Grant
    Filed: September 19, 1990
    Date of Patent: October 22, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Eishi Gofuku, Mitsuyuki Takada
  • Patent number: 5034569
    Abstract: A multilayer interconnection circuit board includes insulating layers and conductor wiring layers which are alternately laminated. The uppermost conductor wiring layer is electrically connected to an intermediate conductor wiring layer to a predetermined stage by irradiating laser beams in the direction of lamination of layers so that the conductor wiring layer or layers located above the intermediate conductor wiring layer are successively molten by the laser beams. The surface irradiated by the laser beams of the conductor wiring layer at the predetermined stage is treated to reflect laser energy, and the surface of the conductor wiring layer or layers which are molten by the laser beams is treated so as to be susceptive to absorb the laser beams.
    Type: Grant
    Filed: April 5, 1990
    Date of Patent: July 23, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Eishi Gofuku, Mitsuyuki Tanaka, Yoshiyuki Morihiro, Hayato Takasago
  • Patent number: 5012314
    Abstract: An apparatus for restoring a liquid crystal display element having a thin film transistor with a threshold voltage and controlling the brightness of the element includes a display driver for driving the liquid crystal display element, a picture image inspection apparatus for evaluating the brightness of the liquid crystal display element, and a thin film transistor threshold voltage adjusting device including a light source for adjusting the threshold voltage of the thin film transistor by irradiating the thin film transistor with light in response to the brightness evaluation.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: April 30, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshio Tobita, Shigeru Yachi, Eishi Gofuku
  • Patent number: 4993148
    Abstract: A method is provided for forming a circuit board which comprises a copper plate and an insulating layer of photosensitive polyimide resin formed on the copper plate, the insulating layer leaving an exposed portion of a surface of the copper plate where an LSI is to be mounted. After Au plating is applied to the exposed surface of the copper plate, the LSI is mounted fixedly. A connection pattern having bonding pads is formed by copper plating on the insulating layer. The bonding pads and the LSI are connected by Au wire bonding on the Au plating applied on the bonding pads.
    Type: Grant
    Filed: September 12, 1989
    Date of Patent: February 19, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kohei Adachi, Mitsuyuki Takada, Atsushi Endo, Eishi Gofuku, Hayato Takasago
  • Patent number: 4946709
    Abstract: A method for fabricating a hybrid IC substrate comprises the steps of: preparing an insulating ceramic substrate having a major surface; baking one or more conductors of a first group formed of high melting point metal or alloy thereof on the major surface; covering the conductors of the first group with a first plated film formed by electroless plating; forming an insulating porous active including a glass component and a small amount of a metal component having a catalytic action for electroless plating on the first plated film; and forming one or more conductors of a second group by electroless plating on the active layer, whereby portions of the active layer sandwiched between the conductors of the first and second groups are rendered conductive.
    Type: Grant
    Filed: August 17, 1989
    Date of Patent: August 7, 1990
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Mitsuyuki Takada, Eishi Gofuku, Hayato Takasago
  • Patent number: 4785157
    Abstract: A method for controlling electric resistance of a compound-type resistant material is disclosed in which a laser beam is irradiated on a compound-type resistant material so as to cause a change in its chemical state whereby the specific resistance inherent to the compound-type resistant material is varied thereby to change its electric resistance in an appropriate manner. If necessary, a portion of the resistant material may be cut away by irradiation of a laser beam so as to further control the resistance value of the resistant material in an increasing sense.
    Type: Grant
    Filed: January 7, 1987
    Date of Patent: November 15, 1988
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Eishi Gofuku, Mitsuyuki Takada, Hayato Takasago