Patents by Inventor Akira Hatori

Akira Hatori 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: 8075961
    Abstract: A glass bonding material contains vanadium and phosphor as main glass components, and comprises in amounts converted as oxides of the elements in the components, 45 to 60% by weight of V2O5, 15 to 30% by weight of P2O5, 5 to 25% by weight of BaO, or contains a glass comprising at least vanadium, phosphor, barium and antimony, wherein the glass comprises in amounts converted as oxides, 15 to 35% by weight of BaO and Sb2O3 in total, and a weight ratio of BaO/Sb2O3 or Sb2O3/BaO is 0.3 or less.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: December 13, 2011
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Yuichi Sawai, Osamu Shiono, Takashi Namekawa, Takashi Naitou, Mitsuo Hayashibara, Yuichi Kijima, Shigemi Hirasawa, Shunichi Asakura, Hiroki Yamamoto, Akira Hatori
  • Patent number: 8071183
    Abstract: A sealing glass of a low melting point phosphate glass composition contains 15 to 35% of BaO and Sb2O3 (in total) and the ratio by weight of BaO to Sb2O3 or Sb2O3 to BaO is 0.3 or less. Particularly the transition metal is vanadium and the glass contains V2O5 of 45 to 60 wt % as vanadium oxide and P2O5 of 15 to 30 wt % as phosphorus oxide. The bonding material is a mixture of a filler and a vanadate-phosphate glass that contains V2O5 of 45 to 60%, P2O5 of 20 to 30%, BaO of 5 to 15%, TeO2 of 0 to 10%, Sb2O3 of 5 to 10%, and WO3 of 0 to 5%. The particle size of the filler is in the range of 1 to 150 ?m and the ratio of filler is 80% by volume or less of the adhesive glass.
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: December 6, 2011
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Yuichi Sawai, Osamu Shiono, Takashi Namekawa, Takashi Naitou, Mitsuo Hayashibara, Yuichi Kijima, Shigemi Hirasawa, Shunichi Asakura, Hiroki Yamamoto, Akira Hatori
  • Publication number: 20110021337
    Abstract: A glass bonding material contains vanadium and phosphor as main glass components, and comprises in amounts converted as oxides of the elements in the components, 45 to 60% by weight of V2O5, 15 to 30% by weight of P2O5, 5 to 25% by weight of BaO, or contains a glass comprising at least vanadium, phosphor, barium and antimony, wherein the glass comprises in amounts converted as oxides, 15 to 35% by weight of BaO and Sb2O3 in total, and a weight ratio of BaO/Sb2O3 or Sb2O3/BaO is 0.3 or less.
    Type: Application
    Filed: October 6, 2010
    Publication date: January 27, 2011
    Inventors: Yuichi Sawai, Osamu Shiono, Takashi Namekawa, Takashi Naitou, Mitsuo Hayashibara, Yuichi Kijima, Shigemi Hirasawa, Shunichi Asakura, Hiroki Yamamoto, Akira Hatori
  • Publication number: 20080315748
    Abstract: There is disclosed an FED (field emission display) capable of supplying an anode voltage, which is a high voltage, to an anode substrate with high reliability. A high voltage introduction button is sealed to a sealing plate, in which a contact spring is attached to the high voltage introduction button by spot welding. The high voltage introduction button has a flat portion connected to the contact spring, a sealing portion sealed to the glass substrate, and an external terminal to be connected to an external power source. The contact spring contacts an anode terminal of an anode substrate with an appropriate contact pressure, by a spring force from an arm portion of the contact spring. The anode terminal is formed of a conductive film containing metal particles.
    Type: Application
    Filed: March 25, 2008
    Publication date: December 25, 2008
    Inventors: Takaaki Kitada, Takashi Naito, Shigemi Hirasawa, Akira Hatori, Shoji Shirai, Shunichi Asakura, Makoto Yano, Yuuichi Kijima, Nobuhiko Hosotani, Go Saito
  • Patent number: 7452489
    Abstract: A conductive material comprising a V2O5—P2O5 glass and a second phase dispersed in the V2O5—P2O5 glass, wherein the second phase contains a crystalline V and O compound and a crystalline metal phosphate compound. The crystalline V and O compound is at least one of V2O5, V4O9, V2O4, and V2O3. The metal phosphate compound is a phosphate compound of transition metal or alkaline-earth metal. In a visual display device, glass spacers are bonded to glass panels with the conductive material.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: November 18, 2008
    Assignee: Hitachi Displays, Ltd.
    Inventors: Yuichi Sawai, Osamu Shiono, Takashi Namekawa, Takashi Naitou, Mitsuo Hayashibara, Hiroshi Ito, Akira Hatori, Nobuhiko Hosotani
  • Patent number: 7427827
    Abstract: To allow an image display device which includes a plurality of distance holding members (spacers) which are arranged in the inside of a display region to acquire a prolonged lifetime, high brightness and high reliability while preventing charging of the spacers, a conductive film is arranged on a bottom surface of the spacer and the conductive film is covered with an adhesive material.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: September 23, 2008
    Assignee: Hitachi Displays, Ltd.
    Inventors: Shigemi Hirasawa, Yuichi Inoue, Akira Hatori
  • Publication number: 20080211384
    Abstract: Constituent elements of a glass frit for fixing spacers propagate along the spacers and migrate to electron emitters to deteriorate the electron emitters, and thereby silhouetting shadows of the spacers on a screen are suppressed. In an image display which is equipped with a rear substrate provided on its inner surface with electron emitters, a front substrate facing the rear substrate, provided on its inner surface with a phosphor pattern having an array corresponding to the electron emitters, and having an outer surface serving as a display surface, and in which a gap between the substrates is held by glass-made spacers, propagation along the spacers and migration to the side of the electron emitters of the constituent elements of the glass frit for fixing spacers is prevented by fixing oxide crystal particles on the spacer surface, or by fixing at least a part of the spacer to the front panel by an adhesive layer comprising a conductive glass a part of which is crystallized.
    Type: Application
    Filed: January 23, 2008
    Publication date: September 4, 2008
    Inventors: Yuichi Sawai, Osamu Shiono, Takashi Naito, Akira Hatori, Hiroki Yamamoto, Hirochi Ito
  • Publication number: 20080203894
    Abstract: The purpose of the invention is to improve the mass productivity of display devices by using a glass substrate that prevents the degradation of an electrode caused by glass of the display device. The present invention provides a flat panel display device containing at least two substrates and a light emitting part provided between the two substrates, wherein at least one substrate of the two substrates contains SiO2 as a main component and contains 1% to 10% by weight of at least one type selected from the group consisting of La, Y, Gd, Yb, and Lu in terms of oxides, 5% to 25% by weight of R2O (R denotes one or more types selected from a group consisting of Li, K, Cs, and Rb), and 8% to 20% by weight of Al2O3, and wherein the surface electric resistance at 350° C. of the glass material is higher than 1×108 (?/square).
    Type: Application
    Filed: January 23, 2008
    Publication date: August 28, 2008
    Inventors: Motoyuki Miyata, Osamu Shiono, Yuichi Sawai, Hiroki Yamamoto, Takashi Naito, Keiichi Kanazawa, Nobuhiko Hosotani, Hiroshi Ito, Akira Hatori
  • Publication number: 20080174234
    Abstract: The purpose of the present invention is to provide a spacer having a small absolute value of the temperature coefficient of resistance, the spacer being excellent in suppressing a thermal runaway, the spacer being excellent in voltage endurance so as not to cause an abnormal discharge even if a high voltage of over 10 kV is applied, the spacer being unlikely to cause deflection of an electron beam, and a flat panel display device provided with this spacer. The spacer of the flat panel display device includes, on the surface of a glass substrate, a thin film that comprises substances exhibiting metal-like electrical conductivity dispersed in an oxide matrix exhibiting semiconductor-like electrical conductivity.
    Type: Application
    Filed: January 22, 2008
    Publication date: July 24, 2008
    Inventors: Hiroki Yamamoto, Takashi Naito, Yuichi Sawai, Osamu Shiono, Motoyuki Miyata, Hiroshi Ito, Akira Hatori, Nobuhiko Hosotani, Kyoto Honbo, Fusao Hojo
  • Publication number: 20080136306
    Abstract: A spacer according to the present invention for use in a flat panel display, which includes a cathode substrate with a cold cathode electron emitting device formed thereon, an anode substrate with a phosphor formed thereon, and a spacer disposed between the cathode and anode substrates, comprises a base made of a conductive glass, and a conductive crystallized glass layer on a surface of the base. The spacer is more excellent in antistatic characteristics than conventional spacers having a conducting layer on the surface of an insulating glass base. A flat panel display according to the present invention using the spacers permits a higher voltage to be applied, thus increasing image quality.
    Type: Application
    Filed: July 5, 2007
    Publication date: June 12, 2008
    Inventors: Takashi Naitou, Yuichi Sawai, Osamu Shiono, Mitsuo Hayashibara, Hiroshi Ito, Akira Hatori, Nobuhiko Hosotani, Shoji Shirai, Shigemi Hirasawa, Keiichi Kanazawa, Hiroyuki Akata
  • Publication number: 20080129186
    Abstract: To provide a spacer, which is unlikely to degrade due to heating received during manufacture process of an image display device, and an image display device equipped with the spacer. An image display device includes: a cathode substrate including an electron source; an anode substrate including a fluorescent substance that emits light upon receiving electrons emitted from the electron source; and a spacer that is disposed between the cathode substrate and the anode substrate and supports the both substrates, wherein the spacer comprises the one having a film composed of a composite metal oxide on a side surface of a glass base material, the composite metal oxide being composed of a solid solution of a metal oxide having a semiconductor-like electrical conductivity and a metal oxide having an insulator-like electrical conductivity.
    Type: Application
    Filed: November 1, 2007
    Publication date: June 5, 2008
    Inventors: Hiroki Yamamoto, Takashi Naito, Yuichi Sawai, Osamu Shiono, Motoyuki Miyata, Hiroshi Ito, Akira Hatori, Nobuhiko Hosotani
  • Patent number: 7332856
    Abstract: An image display device has a front substrate having an anode and phosphors, a rear substrate having electron sources and opposing the front substrate with a specified spacing therebetween, a support member which is sandwiched between the front and rear substrates, surrounds a display region, and maintains the specified spacing, and plural spacing-maintaining members which are sandwiched between the front and rear substrates in the display region, and are fixed at at least one of end faces of each of the spacing-maintaining members to a corresponding one of the front and rear substrates. Both end faces of the support member is hermetically sealed to the rear and front substrates, respectively. A height of the spacing-maintaining members is greater than that of the support member.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: February 19, 2008
    Assignee: Hitachi Displays, Ltd.
    Inventors: Yuuichi Kijima, Shigemi Hirasawa, Kenji Kato, Akira Hatori
  • Patent number: 7327075
    Abstract: An image display device includes a front substrate having anodes and phosphors, a rear substrate having plural video signal wirings or lines and plural electron sources each formed on a corresponding one of the video signal wirings or lines, and disposed to face the front substrate with a predetermined spacing between the front and rear substrates and a support member which is sandwiched between the front and rear substrates, surrounds a display area formed therebetween and maintains the predetermined spacing. The support member is includes long-side portions of a uniform width disposed on long sides of the front substrate and short-side portions of a uniform width disposed on short sides of the front substrate. At least the long-side portions are curved convexly toward an outside of the display area.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: February 5, 2008
    Assignee: Hitachi Displays, Ltd.
    Inventors: Yuuichi Kijima, Shigemi Hirasawa, Yuichi Inoue, Akira Hatori
  • Publication number: 20080024051
    Abstract: An image display device includes a vacuum envelope which is constituted of a rectangular back substrate which arranges electron sources in the vicinity of intersecting portions of image signal electrodes and scanning signal electrodes, a rectangular face substrate which includes phosphor layers and anodes, and a frame body which is connected to peripheral regions of the respective substrates. A frame width size of a frame body is set such that the long-side frame width is larger than the short-side frame width thus realizing the miniaturization and the reduction of weight of the image display device.
    Type: Application
    Filed: July 30, 2007
    Publication date: January 31, 2008
    Inventors: Hiroyuki Tachihara, Akira Hatori, Noriyuki Oroku
  • Publication number: 20080012464
    Abstract: In a display in which two substrates are disposed facing each other with the inner pressure reduced, spacers are used to keep the distance between the two substrates. The spacers are fixed to the substrates using a fixing material obtained by hardening a paste-like adhesive. By transferring paste to each of the spacers, drying the paste applied to the spacer, and applying paste to the dried paste, the amount of paste to be attached to the spacer can be controlled.
    Type: Application
    Filed: July 11, 2007
    Publication date: January 17, 2008
    Inventors: Hiroyuki Tachihara, Akira Hatori, Kouichi Shouji
  • Publication number: 20080007151
    Abstract: A spacer of the present invention for use in an image display device, which has the spacer between a cathode substrate with a cold cathode electron emitting device formed thereon and an anode substrate with a phosphor formed thereon, comprises a phosphate glass having transition metal oxides as its main components, and a higher phosphate concentration layer at the spacer surface. A thickness of the higher phosphate concentration layer is suppressed to 0.5 ?m or less. More preferably, the spacer has a water resistant conductive passivation layer formed on its surface. This suppresses the thickness of the higher phosphate concentration layer to a thinner level, so that the spacer is less likely to be charged thus reducing the deflection amount of electron beam. An image display device of the present invention using above spacer can apply a higher voltage to the anode substrate, thus increasing the image quality.
    Type: Application
    Filed: July 5, 2007
    Publication date: January 10, 2008
    Inventors: Takashi Naitou, Yuichi Sawai, Osamu Shiono, Mitsuo Hayashibara, Hiroshi Ito, Akira Hatori, Nobuhiko Hosotani, Shoji Shirai, Shigemi Hirasawa, Keiichi Kanazawa, Hiroyuki Akata
  • Publication number: 20070286973
    Abstract: A sealing glass of a low melting point glass composition which is a phosphate glass that contains transition metal wherein the glass contains 15 to 35% of BaO and Sb2O3 (in total) and the ratio by weight of BaO to Sb2O3 or Sb2O3 to BaO is 0.3 or less. Particularly the transition metal is vanadium and the glass contains V2O5 of 45 to 60 wt % as vanadium oxide and P2O5 of 15 to 30 wt % as phosphorus oxide. The bonding material is a mixture of a filler and a vanadate-phosphate glass that contains V2O5 as the main ingredient and the glass contains V2O5 of 45 to 60%, P2O5 of 20 to 30%, BaO of 5 to 15%, TeO2 of 0 to 10%, Sb2O3 of 5 to 10%, and WO3 of 0 to 5%. The particle size of the filler is in the range of 1 to 150 ?m and the ratio of filler is 80% by volume or less of the adhesive glass.
    Type: Application
    Filed: June 1, 2007
    Publication date: December 13, 2007
    Inventors: Yuichi Sawai, Osamu Shiono, Takashi Namekawa, Takashi Naitou, Mitsuo Hayashibara, Yuichi Kijima, Shigemi Hirasawa, Shunichi Asakura, Hiroki Yamamoto, Akira Hatori
  • Publication number: 20070278454
    Abstract: A conductive material comprising a V2O5—P2O5 glass and a second phase dispersed in the V2O5—P2O5 glass, wherein the second phase contains a crystalline V and O compound and a crystalline metal phosphate compound. The crystalline V and O compound is at least one of V2O5, V4O9, V2O4, and V2O3. The metal phosphate compound is a phosphate compound of transition metal or alkaline-earth metal. In a visual display device, glass spacers are bonded to glass panels with the conductive material.
    Type: Application
    Filed: May 31, 2007
    Publication date: December 6, 2007
    Inventors: Yuichi Sawai, Osamu Shiono, Takashi Namekawa, Takashi Naitou, Mitsuo Hayashibara, Hiroshi Ito, Akira Hatori, Nobuhiko Hosotani
  • Patent number: 7233103
    Abstract: The present invention provides an image display device which can realize the recycling at a low cost by shortening a disassembling time of a face substrate and a back substrate. In a support frame which is bonded and fixed to a face substrate and a back substrate by way of sealing materials respectively, a cut portion whose spatial region expands from the inside to the outside is integrally formed on an end surface at a corner portion thereof. To outer portions of the cut portions, the sealing materials 10a, 10b are not fixed.
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: June 19, 2007
    Assignee: Hitachi Displays, Ltd.
    Inventors: Yuuichi Kijima, Shigemi Hirasawa, Kenji Kato, Akira Hatori, Hiroshi Sasaki
  • Publication number: 20070057622
    Abstract: Spacers are fixed on scanning signal lines by a bonding member and conductive bonding member. Since the scanning signal lines and the spacers formed on a back substrate are fixed with the bonding member and the conductive bonding member, electrostatic charge of the spacers can be prevented. According to the invention, a display device which can obtain an image display with a high white uniformity is provided by stabilizing the potential applied to spacers and stabilizing the beam landing of electron beams.
    Type: Application
    Filed: September 7, 2006
    Publication date: March 15, 2007
    Inventors: Shigemi Hirasawa, Akira Hatori, Yuichi Inoue, Hiroshi Ito, Nobuhiko Fukuoka