Patents by Inventor Keiji Tsuda

Keiji Tsuda 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: 8004160
    Abstract: An acoustic wave device includes a substrate, an acoustic wave element, an electrode pad, a resin portion and a metal post. The acoustic wave element is provided on the substrate. The electrode pad is provided on the substrate, is electrically coupled to the acoustic wave element, and has an Au layer and an adhesive layer formed on the Au layer and having an opening. The resin portion is provided on the substrate so as to cover the acoustic wave element and the electrode pad, and has a through-hole formed to expose a surface of the electrode pad. The metal post is provided in the through-hole and contacts with the Au layer through the opening of the adhesive layer. The adhesive layer is provided between the Au layer and the resin portion.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: August 23, 2011
    Assignee: Taiyo Yuden Co., Ltd
    Inventors: Keiji Tsuda, Jyouji Kimura, Shunichi Aikawa
  • Patent number: 7911116
    Abstract: A surface acoustic wave device includes a piezoelectric substrate, an interdigital transducer (IDT) formed on the piezoelectric substrate, an interconnection electrode that is provided on the piezoelectric substrate and is connected to the IDT, the IDT being made of a metal identical to that of the IDT, an inorganic insulation layer that is provided on the piezoelectric substrate so that at least the interconnection electrode is exposed, an insulative resin layer that is located on an interface between the inorganic insulation layer and a portion of the interconnection electrode exposed from the inorganic insulation layer and is formed so as to cover a side surface of the interconnection electrode, and a metal layer that is provided on the interconnection electrode and the insulative resin layer.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: March 22, 2011
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Shunichi Aikawa, Masayuki Kitajima, Keiji Tsuda
  • Patent number: 7841064
    Abstract: A method of manufacturing an acoustic wave device includes forming a first sealing portion on a substrate having an acoustic wave element thereon so that a functional region, in which an acoustic wave oscillates, of the acoustic wave element acts as a first non-covered portion and a cutting region for individuating acts as a second non-covered portion, forming a second sealing portion on the first sealing portion so as to cover the first non-covered portion and the second non-covered portion, and cutting off the substrate and the second sealing portion so that the second non-covered portion is divided.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: November 30, 2010
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Shunichi Aikawa, Takumi Kooriike, Jyouji Kimura, Keiji Tsuda, Masayuki Kitajima, Kazunori Inoue, Takashi Matsuda
  • Patent number: 7721411
    Abstract: A method of manufacturing an acoustic wave device includes: forming a conductive pattern on a wafer made of a piezoelectric substrate having an acoustic wave element, the conductive pattern including a first conductive pattern being continuously formed on a cutting region for individuating the wafer, a second conductive pattern being formed on an electrode region where a plated electrode is to be formed and being connected to the acoustic wave element and a third conductive pattern connecting the first conductive pattern and the second pattern; forming an insulating layer on the wafer so as to have an opening on the second conductive pattern; forming the plated electrode on the second conductive pattern by providing an electrical current to the second conductive pattern via the first conductive pattern and the third conductive pattern; and cutting off and individuating the wafer along the cutting region.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: May 25, 2010
    Assignees: Fujitsu Media Devices Limited, Fujitsu Limited
    Inventors: Shunichi Aikawa, Jyouji Kimura, Keiji Tsuda, Kazunori Inoue, Takashi Matsuda
  • Publication number: 20100052473
    Abstract: An acoustic wave device includes: a piezoelectric substrate on which an acoustic wave element and an electrode pad connected to the acoustic wave element are formed; a first resin part having a first opening located above a function area in which an acoustic wave is excited by the acoustic wave element and a second opening located above the electrode pad; a second resin part that covers the first opening and has a third opening located above the second opening; and a metal layer formed on the electrode pad in the second opening, the first opening and the second opening being inversely tapered.
    Type: Application
    Filed: August 24, 2009
    Publication date: March 4, 2010
    Applicant: FUJITSU MEDIA DEVICES LIMITED
    Inventors: Masanori KIMURA, Shunichi Aikawa, Keiji Tsuda, Hikomasa Oshita
  • Publication number: 20090236934
    Abstract: A surface acoustic wave device includes a piezoelectric substrate, an interdigital transducer (IDT) formed on the piezoelectric substrate, an interconnection electrode that is provided on the piezoelectric substrate and is connected to the IDT, the IDT being made of a metal identical to that of the IDT, an inorganic insulation layer that is provided on the piezoelectric substrate so that at least the interconnection electrode is exposed, an insulative resin layer that is located on an interface between the inorganic insulation layer and a portion of the interconnection electrode exposed from the inorganic insulation layer and is formed so as to cover a side surface of the interconnection electrode, and a metal layer that is provided on the interconnection electrode and the insulative resin layer.
    Type: Application
    Filed: March 24, 2009
    Publication date: September 24, 2009
    Applicant: FUJITSU MEDIA DEVICES LIMITED
    Inventors: Shunichi AIKAWA, Masayuki Kitajima, Keiji Tsuda
  • Patent number: 7586240
    Abstract: An acoustic wave device includes an acoustic wave element formed on a substrate, a first seal portion provided on the substrate so as to form a cavity above the acoustic wave element, and a second seal portion provided on the first seal portion, the first seal portion having a step so that the first seal portion has a width on a first side and another width on a second side arranged so that the first side is closer than the second side to the substrate, and the width on the first side is greater than the another width on the second side.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: September 8, 2009
    Assignees: Fujitsu Media Devices Limited, Fujitsu Limited
    Inventors: Keiji Tsuda, Jyouji Kimura, Shunichi Aikawa, Kazunori Inoue, Takashi Matsuda
  • Publication number: 20090175470
    Abstract: An acoustic wave device includes a substrate; an acoustic wave element provided on the substrate; a terminal that is provided on the substrate and is electrically coupled to the acoustic wave element; a first insulating layer that is provided on the substrate and has a first opening at a region thereof overlapped with at least a part of the terminal; a second insulating layer that has an second opening at a region thereof overlapped with at least a part of the first opening and is provided on the first insulating layer and the acoustic wave element so that a cavity is formed above the acoustic wave element; a third insulating layer that has a third opening including the region where the first opening and the second opening are overlapped with each other, and is provided on the second insulating layer; a metal post that is electrically coupled to the terminal and is provided in the first opening, the second opening and the third opening; and a solder ball provided on the metal post.
    Type: Application
    Filed: January 6, 2009
    Publication date: July 9, 2009
    Applicant: FUJITSU MEDIA DEVICES LIMITED
    Inventors: Shunichi Aikawa, Masayuki Kitajima, Keiji Tsuda
  • Publication number: 20090160290
    Abstract: An acoustic wave device includes a substrate, an acoustic wave element, an electrode pad, a resin portion and a metal post. The acoustic wave element is provided on the substrate. The electrode pad is provided on the substrate, is electrically coupled to the acoustic wave element, and has an Au layer and an adhesive layer formed on the Au layer and having an opening. The resin portion is provided on the substrate so as to cover the acoustic wave element and the electrode pad, and has a through-hole formed to expose a surface of the electrode pad. The metal post is provided in the through-hole and contacts with the Au layer through the opening of the adhesive layer. The adhesive layer is provided between the Au layer and the resin portion.
    Type: Application
    Filed: December 22, 2008
    Publication date: June 25, 2009
    Applicant: FUJITSU MEDIA DEVICES LIMITED
    Inventors: Keiji Tsuda, Jyouji Kimura, Shunichi Aikawa
  • Patent number: 7412088
    Abstract: A method of inspecting a display panel having a substrate and a plurality of fluorescent layers including measuring bright and dark signals reflected by the fluorescent layers while moving the substrate or an illuminating means generating the signals and an imaging means receiving the signals in a direction across the plurality of fluorescent layers at predetermined intervals, and measuring an application volume for each fluorescent layer from the signals obtained by the imaging means.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: August 12, 2008
    Assignee: Toray Industries, Inc.
    Inventors: Osamu Kuramata, Hiromichi Sasamoto, Hiroki Sugihara, Keiji Tsuda
  • Publication number: 20080174207
    Abstract: An acoustic wave device includes an acoustic wave element formed on a substrate, a first seal portion provided on the substrate so as to form a cavity above the acoustic wave element, and a second seal portion provided on the first seal portion, the first seal portion having a step so that the first seal portion has a width on a first side and another width on a second side arranged so that the first side is closer than the second side to the substrate, and the width on the first side is greater than the another width on the second side.
    Type: Application
    Filed: January 23, 2008
    Publication date: July 24, 2008
    Applicants: FUJITSU MEDIA DEVICES LIMITED, FUJITSU LIMITED
    Inventors: Keiji Tsuda, Jyouji Kimura, Shunichi Aikawa, Kazunori Inoue, Takashi Matsuda
  • Publication number: 20080122314
    Abstract: An acoustic wave device includes an acoustic wave element provided on a substrate, a wiring that is provided on the substrate and is electrically connected to the acoustic wave element, a sealing portion that is provided on the substrate so as to cover the acoustic wave element and the wiring, and an insulating layer that is provided on a whole area between the substrate and the sealing portion and between the wiring and the sealing portion.
    Type: Application
    Filed: November 28, 2007
    Publication date: May 29, 2008
    Inventors: Takashi Yamashita, Keiji Tsuda, Shunichi Aikawa, Kazunori Inoue, Takashi Matsuda
  • Publication number: 20080125662
    Abstract: A method of manufacturing an acoustic wave device includes forming a first sealing portion on a substrate having an acoustic wave element thereon so that a functional region, in which an acoustic wave oscillates, of the acoustic wave element acts as a first non-covered portion and a cutting region for individuating acts as a second non-covered portion, forming a second sealing portion on the first sealing portion so as to cover the first non-covered portion and the second non-covered portion, and cutting off the substrate and the second sealing portion so that the second non-covered portion is divided.
    Type: Application
    Filed: November 28, 2007
    Publication date: May 29, 2008
    Inventors: Shunichi Aikawa, Takumi Kooriike, Jyouji Kimura, Keiji Tsuda, Masayuki Kitajima, Kazunori Inoue, Takashi Matsuda
  • Publication number: 20080122318
    Abstract: A method of manufacturing an acoustic wave device includes: forming a conductive pattern on a wafer made of a piezoelectric substrate having an acoustic wave element, the conductive pattern including a first conductive pattern, a second conductive pattern and a third conductive pattern, the first conductive pattern being continuously formed on a cutting region for individuating the wafer, the second conductive pattern being formed on an electrode region where a plated electrode is to be formed and being connected to the acoustic wave element, the third conductive pattern connecting the first conductive pattern and the second conductive pattern; forming an insulating layer on the wafer so as to have a opening on the second conductive pattern; forming the plated electrode on the second conductive pattern by providing an electrical current to the second conductive pattern via the first conductive pattern and the third conductive pattern; and cutting off and individuating the wafer along the cutting region.
    Type: Application
    Filed: November 28, 2007
    Publication date: May 29, 2008
    Inventors: Shunichi Aikawa, Jyouji Kimura, Keiji Tsuda, Kazunori Inoue, Takashi Matsuda
  • Publication number: 20040135827
    Abstract: An object of the present invention is to provide a display panel inspection method, a display panel inspection device, and a display panel manufacturing method capable of determining the optimum optical conditions for inspecting a surface shape from the structural characteristic of an object to be inspected, reflecting the determined conditions on the inspection device to carry out the inspection with high accuracy, improving the yield without degrading the yield rate, and manufacturing a substrate of high quality and high reliability.
    Type: Application
    Filed: September 4, 2003
    Publication date: July 15, 2004
    Inventors: Osamu Kuramata, Hiromichi Sasamoto, Hiroki Sugihara, Keiji Tsuda
  • Publication number: 20030128311
    Abstract: A liquid crystal display apparatus comprises:
    Type: Application
    Filed: December 12, 2002
    Publication date: July 10, 2003
    Inventors: Keiji Tsuda, Shinichi Yamada, Tetsuya Goto, Kunihiro Hatanaka
  • Patent number: 6525791
    Abstract: A liquid crystal diaplay apparatus having a color filter base plate with a transparent substrate, a resin black matrix formed by dispersing a light-shielding agent therein and a colored film of three primary colors provided on the transparent substrate, an electrode-carrying base plate provided with electrodes for applying an electric field parallel to the color filter, a liquid crystal disposed between said color filter base plate and said electrode-carrying base plate, a first alignment layer on the protective layer, an overcoat film on the colored film, a second alignment layer on the overcoat film, and a spacer formed on the resin black matrix by patterning a resin is disclosed.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: February 25, 2003
    Assignee: Toray Industries, Inc.
    Inventors: Keiji Tsuda, Shinichi Yamada, Tetsuya Goto, Kunihiro Hatanaka
  • Patent number: 6275280
    Abstract: The present invention provides a liquid crystal display element substrate having spacers fixed in non-display regions on the liquid crystal display element substrate, where the load compression displacement of these spacers in terms of a compression stress of 0.5 to 0.6 GPa is from 0.001 to 1 &mgr;m/mN. Further, it provides a liquid crystal display device which is characterized in that, in a liquid crystal display device where a liquid crystal layer is held between two liquid crystal display element substrates, at least one of these liquid crystal display element substrates is an aforesaid liquid crystal display element substrate. As well as realizing a sufficient cell gap the present invention has the effect that, by maintaining a uniform cell gap within the screen, the problems of a lowering in the display quality due to change in the cell gap and the generation of bubbles at the time of low temperature are resolved.
    Type: Grant
    Filed: April 2, 1998
    Date of Patent: August 14, 2001
    Assignee: Toray Industries, Inc.
    Inventors: Junji Kajita, Keiji Tsuda, Hideo Ido, Hideshi Nomura, Shinichi Yamada, Tetsuya Goto