Patents by Inventor Masahito Ijuin

Masahito Ijuin 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: 6652342
    Abstract: A gas discharge type display apparatus includes a front substrate having a plurality of first electrodes and a back substrate having a plurality of second electrodes and at least ones of the first and second electrodes are made of the photosensitive material containing silver exposed by using the laser thereby, making a mask unnecessary.
    Type: Grant
    Filed: April 27, 1999
    Date of Patent: November 25, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Masashi Nishiki, Michifumi Kawai, Ryohei Satoh, Shigeaki Suzuki, Akira Yabushita, Masahito Ijuin
  • Patent number: 6624575
    Abstract: A gas discharge display device having a first substrate, a plurality of first electrodes having a substantially rectangular form being arranged on the first substrate, a plurality of second electrodes, respective ones of the plurality of second electrodes being formed on respective ones of the plurality of first electrodes, and each of the plurality of second electrodes having an extension extending beyond an end of a respective one of the plurality of first electrodes on which respective ones of the plurality of second electrodes are formed and in an oblique direction therefrom. The extension of the plurality of second electrodes extend beyond opposite ends of alternate ones of the plurality of first electrodes.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: September 23, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Masashi Nishiki, Ryohei Satoh, Yuzo Taniguchi, Shigeaki Suzuki, Michifumi Kawai, Masahito Ijuin, Akira Yabushita, Tomohiro Murase
  • Patent number: 6621217
    Abstract: A gas discharge display device comprising a front side substrate having a plurality of first electrodes and a back side substrate having a plurality of second electrodes, wherein at least said first electrodes or second electrodes are formed by wet etching using a resist made of an inorganic material, is excellent in the ability to suppress the breakage of wiring in electrodes.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: September 16, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Masashi Nishiki, Ryohei Satoh, Yuzo Taniguchi, Shigeaki Suzuki, Michifumi Kawai, Masahito Ijuin, Akira Yabushita, Makoto Fukushima, Tomohiko Murase
  • Patent number: 6471115
    Abstract: The present invention is a process for manufacturing an electronic circuit device by applying a solder material to electronic parts or electrodes on a printed circuit board; the process comprising the steps of removing an initial surface oxide film and an organic contaminant film from the surfaces of the solder material and electrode, covering the solder material and an area to which solder is to be applied which is comprised of the electrode, with a liquid vaporizing up after the bonding is completed in the step of heat-melting the solder material, to thereby prevent reoxidation of the joining area surface, and heat-melting the solder material, to carry out solder bonding without using any flux.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: October 29, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Masahito Ijuin, Toru Nishikawa, Ryohei Sato, Mitsugu Shirai, Yuzo Taniguchi, Kosuke Inoue, Masahide Harada, Tetsuya Hayashida
  • Patent number: 6429586
    Abstract: A method of making a gas discharge display panel and a gas discharge display device using laser processing so that the manufacturing time to form wiring on a substrate thereof is significantly reduced. In order to achieve this, the gas discharge display panel is provided with a first substrate having a plurality of first electrodes and a plurality of second electrodes, and the first electrodes are laser processed to have a substantially rectangular shape. The second electrodes are formed on the first electrodes, and a second substrate having a plurality of third electrodes which is opposed to the first substrate is provided.
    Type: Grant
    Filed: January 5, 1999
    Date of Patent: August 6, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Masashi Nishiki, Ryohei Satoh, Yuzo Taniguchi, Shigeaki Suzuki, Michifumi Kawai, Masahito Ijuin, Akira Yabushita, Tomohiro Murase
  • Publication number: 20020070665
    Abstract: A gas discharge display device comprising a front side substrate having a plurality of first electrodes and a back side substrate having a plurality of second electrodes, wherein at least said first electrodes or second electrodes are formed by wet etching using a resist made of an inorganic material, is excellent in the ability to suppress the breakage of wiring in electrodes.
    Type: Application
    Filed: February 11, 2002
    Publication date: June 13, 2002
    Inventors: Masashi Nishiki, Ryohei Satoh, Yuzo Taniguchi, Shigeaki Suzuki, Michifumi Kawai, Masahito Ijuin, Akira Yabushita, Makoto Fukushima, Tomohiko Murase
  • Patent number: 6346772
    Abstract: A gas discharge display device comprising a front side substrate having a plurality of first electrodes and a back side substrate having a plurality of second electrodes, wherein at least said first electrodes or second electrodes are formed by wet etching using a resist made of an inorganic material, is excellent in the ability to suppress the breakage of wiring in electrodes.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: February 12, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Masashi Nishiki, Ryohei Satoh, Yuzo Taniguchi, Shigeaki Suzuki, Michifumi Kawai, Masahito Ijuin, Akira Yabushita, Makoto Fukushima, Tomohiko Murase
  • Publication number: 20020014841
    Abstract: A gas discharge display device comprising a front side substrate having a plurality of first electrodes and a back side substrate having a plurality of second electrodes, wherein at least said first electrodes or second electrodes are formed by wet etching using a resist made of an inorganic material, is excellent in the ability to suppress the breakage of wiring in electrodes.
    Type: Application
    Filed: July 13, 2001
    Publication date: February 7, 2002
    Inventors: Masashi Nishiki, Ryohei Satoh, Yuzo Taniguchi, Shigeaki Suzuki, Michifumi Kawai, Masahito Ijuin, Akira Yabushita, Makoto Fukushima, Tomohiko Murase
  • Patent number: 6343967
    Abstract: A method of making a gas discharge display panel including the steps of providing a first substrate having a plurality of first electrodes and a plurality of second electrodes, laser processing said first electrodes into a rectangular form, forming the second electrodes on the first electrodes and providing a second substrate having a plurality of third electrodes and being opposed to the first substrate.
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: February 5, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Masashi Nishiki, Ryohei Satoh, Yuzo Taniguchi, Shigeaki Suzuki, Michifumi Kawai, Masahito Ijuin, Akira Yabushita, Tomohiro Murase
  • Patent number: 6261144
    Abstract: A gas discharge display device comprising a front side substrate having a plurality of first electrodes and a back side substrate having a plurality of second electrodes, wherein at least said first electrodes or second electrodes are formed by wet etching using a resist made of an inorganic material, is excellent in the ability to suppress the breakage of wiring in electrodes.
    Type: Grant
    Filed: October 1, 1998
    Date of Patent: July 17, 2001
    Assignee: Hitachi, LTD
    Inventors: Masashi Nishiki, Ryohei Satoh, Yuzo Taniguchi, Shigeaki Suzuki, Michifumi Kawai, Masahito Ijuin, Akira Yabushita, Makoto Fukushima, Tomohiko Murase
  • Patent number: 6199404
    Abstract: A manufacturing method for a gas discharge type display panel makes it possible to manufacture an environmentally friendly substrate with high accuracy and yet at low cost. According to the manufacturing methods electrodes are formed on a back substrate by photolithography or printing, then a glass paste is printed to a height of approximately 10 &mgr;m-500 &mgr;m by printing. A barrier rib blanks are produced by rolling under pressure the glass paste by using a roller provided with grooves. The roller is heated in advance. The barrier rib blanks are sintered into the barrier ribs.
    Type: Grant
    Filed: October 21, 1997
    Date of Patent: March 13, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Michifumi Kawai, Ryohei Satoh, Masahito Ijuin, Tomohiko Murase, Takao Terabayashi, Nobuyuki Ushifusa, Yoshihiro Kato, Shigeaki Suzuki, Seiichi Tsuchida, Yutaka Naito, Seiichi Yasumoto, Osami Kaneto
  • Patent number: 5865365
    Abstract: A method of soldering used in fabricating an electronic circuit device employs an organic material supplied to at least one of the connecting members to be bonded. The connecting members are positioned in an oxidizing atmosphere, and heated in a nonoxidizing atmosphere to remove oxide and/or contamination layers present on the surface of presoldered portions or metallized bonding portions. By this method, fluxless soldering is performed, positional shifts are reduced, and high reliability of the soldering connections with reduction in residues after reflow are obtained.
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: February 2, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Toru Nishikawa, Ryohei Satoh, Masahide Hara, Tetsuya Hayashida, Mitugu Shirai, Osamu Yamada, Hiroko Takehara, Yasuhiro Iwata, Mitsunori Tamura, Masahito Ijuin
  • Patent number: 5516031
    Abstract: In order to remove oxide film and contamination film on members to be bonded by soldering and solder material therefor corresponding to variation of thickness thereof by sputter-etching in a fluxless bonding method and apparatus therefor, substance emitted from the solder material under sputter-etching using atom or ion is detected and determined whether it is from the solder material or from the oxide film thereon. The sputter-etching is controlled on the basis of the determination to remove the oxide film. Then, the members are aligned in oxidizing atmosphere and soldered in non-oxidizing atmosphere.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: May 14, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Toru Nishikawa, Masahito Ijuin, Ryohei Sato, Mitsugu Shirai