Patents by Inventor Seigo Shiraishi

Seigo Shiraishi 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: 20130321121
    Abstract: An object of the disclosure is to provide a chip resistor without causing the disconnection in atmosphere of sulfidizing gas and without precipitating silver sulfide on its surface. The chip resistor of the present disclosure includes a resistor layer disposed on a top surface of a substrate; a first upper electrode layer disposed at both sides of the resistor layer and being electrically connected to the resistor layer; and a second upper electrode layer disposed on the first upper electrode layer and including between 75% by weight and 85% by weight (inclusive) of silver particles with an average particle diameter ranging from 0.3 ?m to 2 ?m, between 1% by weight and 10% by weight (inclusive) of carbon, and a resin.
    Type: Application
    Filed: August 6, 2013
    Publication date: December 5, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Takashi OHBAYASHI, Seigo SHIRAISHI, Kazunori SAKAI
  • Patent number: 8410677
    Abstract: The present invention provides a blue phosphor having high luminance and showing less luminance degradation during driving of a light-emitting device. The present invention is a blue phosphor that includes: an alkaline earth metal aluminate represented by a general formula aBaO.bSrO.(1?a?b)EuO.cMgO.dAlO3/2, where 0.70?a?0.95, 0?b?0.15, 0.95?c?1.15, 9.00?d?11.00, and a+b?0.97 are satisfied; and 0.008 mol to 0.800 mol of MWO4 with respect to 1 mol of the aluminate, where M is at least one element selected from a group consisting of Ba, Sr, and Ca.
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: April 2, 2013
    Assignee: Panasonic Corporation
    Inventors: Kojiro Okuyama, Yayoi Kitamura, Seigo Shiraishi, Kazuhiko Sugimoto, Mituru Harada
  • Patent number: 8366965
    Abstract: The present invention provides a blue phosphor that exhibits high luminance and shows less luminance degradation during driving of a light-emitting device. The present invention is a blue phosphor represented by the general formula aBaO.bSrO.(1?a?b)EuO.cMgO.dAlO3/2.eWO3, where 0.70?a?0.95, 0?b?0.15, 0.95?c?1.15, 9.00?d?11.00, 0.001?e?0.100, and a+b?0.97 are satisfied. In this blue phosphor, two peaks whose tops are located in a range of diffraction angle 2?=13.0 to 13.6 degrees are present in an X-ray diffraction pattern obtained by measurement on the blue phosphor using an X-ray with a wavelength of 0.774 ?.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: February 5, 2013
    Assignee: Panasonic Corporation
    Inventors: Kojiro Okuyama, Yayoi Kitamura, Seigo Shiraishi, Kazuhiko Sugimoto, Mituru Harada
  • Patent number: 8361347
    Abstract: The blue phosphor of the present invention includes ZrO2 and a metal aluminate that is represented by the general formula aBaO.bSrO.(1?a?b)EuO.cMgO.dAlO3/2.eWO3, where 0.70?a?0.95, 0?b?0.15, 0.95?c?1.15, 9.00?d?11.00, 0.001?e?0.200, and a+b?0.97 are satisfied. This blue phosphor has a ZrO2 content of 0.01 to 1.00% by weight. In the blue phosphor of the present invention, two peaks whose tops are located in a range of diffraction angle 2?=13.0 to 13.6 degrees are present in an X-ray diffraction pattern obtained by measurement on the blue phosphor using an X-ray with a wavelength of 0.774 ?.
    Type: Grant
    Filed: July 3, 2009
    Date of Patent: January 29, 2013
    Assignee: Panasonic Corporation
    Inventors: Kojiro Okuyama, Yayoi Okui, Seigo Shiraishi
  • Publication number: 20120326197
    Abstract: An LED encapsulation resin body disclosed in the present application includes: a phosphor; a heat resistance material arranged on, or in the vicinity of, a surface of the phosphor; and a silicone resin in which the phosphor with the heat resistance material arranged thereon is dispersed.
    Type: Application
    Filed: August 30, 2012
    Publication date: December 27, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Takashi OHBAYASHI, Seigo SHIRAISHI
  • Patent number: 8236201
    Abstract: The present invention provides a phosphor having high luminance, a property of low luminance degradation during driving of a light-emitting device and manufacturing processes, and chromaticity y in PDP comparable to that of BAM:Eu. The present invention is the phosphor represented by the general formula xSrO.yEuO.MgO.zSiO2 where 2.970?x?3.500, 0.001 ?y?0.030, and 1.900?z?2.100 are satisfied, wherein a main peak is present in the range of diffraction angle 2?=16.1 to 16.5 degree in the X-ray diffraction pattern obtained by measurement on the blue phosphor using an X-ray with a wavelength of 0.774 ?, and at least one condition of the following conditions (A1) and (A2) is satisfied: (A1) at least two peaks whose tops are located in the range of diffraction angle 2?=15.3 to 16.1 degree are present; and (A2) at least two peaks whose tops are located in the range of diffraction angle 2?=22.2 to 23.3 degree are present.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: August 7, 2012
    Assignee: Panasonic Corporation
    Inventors: Yayoi Kitamura, Seigo Shiraishi, Kojiro Okuyama, Masahiro Sakai
  • Publication number: 20120181480
    Abstract: The present invention provides a blue phosphor that exhibits high luminance and shows less luminance degradation during driving of a light-emitting device. The present invention is a blue phosphor represented by the general formula aBaO.bSrO.(1?a?b)EuO.cMgO.dAlO3/2.eWO3, where 0.70?a?0.95, 0?b?0.15, 0.95?c?1.15, 9.00?d?11.00, 0.001?e?0.100, and a+b?0.97 are satisfied. In this blue phosphor, two peaks whose tops are located in a range of diffraction angle 2?=13.0 to 13.6 degrees are present in an X-ray diffraction pattern obtained by measurement on the blue phosphor using an X-ray with a wavelength of 0.774 ?.
    Type: Application
    Filed: July 11, 2011
    Publication date: July 19, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Kojiro OKUYAMA, Yayoi KITAMURA, Seigo SHIRAISHI, Kazuhiko SUGIMOTO, Mituru HARADA
  • Patent number: 8183778
    Abstract: The present invention provides a phosphor with high luminance and color purity. The phosphor of the present invention is represented by the general formula: aYO3/2·(3?a)CeO3/2·bAlO3/2·cGaO3/2, where 2.80?a?2.99, 1.00?b?5.00, 0?c?4.00, and 4.00?b+c?5.00 are satisfied. In the phosphor, a peak whose peak top is located in the range of diffraction angle 2? of not less than 16.7 degrees but not more than 16.9 degrees is present in an X-ray diffraction pattern obtained by measurement on the phosphor using an X-ray with a wavelength of 0.774 ?.
    Type: Grant
    Filed: April 9, 2010
    Date of Patent: May 22, 2012
    Assignee: Panasonic Corporation
    Inventors: Kojiro Okuyama, Yayoi Okui, Seigo Shiraishi
  • Patent number: 8169143
    Abstract: A plasma display panel (200) of the present invention includes a first panel (1) and a second panel (8). A discharge space (14) is formed between the first panel (1) and the second panel (8). In the plasma display panel (200), an electron emitting material (20) is disposed to face the discharge space (14). The electron emitting material (20) contains Sn, an alkali metal, O (oxygen), and at least one element selected from the group consisting of Ca, Sr, and Ba.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: May 1, 2012
    Assignee: Panasonic Corporation
    Inventors: Yayoi Okui, Osamu Inoue, Kojiro Okuyama, Seigo Shiraishi
  • Patent number: 8142684
    Abstract: The present invention provides a method of manufacturing a blue silicate phosphor having high luminance and a chromaticity y comparable to or lower than that of BAM:Eu. The present invention is a method of manufacturing a blue silicate phosphor represented by the general formula aAO.bEuO.(Mg1?w,Znw)O.cSiO2.dCaCl2, where A is at least one selected from Sr, Ba and Ca, and 2.970?a?3.500, 0.006?b?0.030, 1.900?c?2.100, 0?d?0.05, and 0?w?1 are satisfied. In this manufacturing method, heat treatment is carried out in a gas atmosphere having an oxygen partial pressure of 1×10?15.5 atm to 1×10?10 atm at a temperature of 1200° C. to 1400° C.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: March 27, 2012
    Assignee: Panasonic Corporation
    Inventors: Seigo Shiraishi, Kojiro Okuyama, Masahiro Sakai, Takehiro Zukawa
  • Patent number: 8129905
    Abstract: The present invention provides a phosphor having high luminance, a property of low luminance degradation during driving of a light-emitting device, and chromaticity y comparable to that of BAM:Eu. The present invention is a phosphor represented by the general formula aAO.bEuO.DO.cSiO2, where A is at least one selected from Ca, Sr and Ba, D is at least one selected from Mg and Zn, and 2.970?a?3.500, 0.001?b?0.030, and 1.900?c?2.100 are satisfied. In this phosphor, a peak intensity at 1490 cm?1 is 0.02 to 0.8 when a peak intensity at 565 cm?1 is set to 1 in a spectrum obtained by measurement using photoacoustic spectroscopy.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: March 6, 2012
    Assignee: Panasonic Corporation
    Inventors: Kojiro Okuyama, Masahiro Sakai, Seigo Shiraishi
  • Patent number: 8072143
    Abstract: A PDP and a manufacturing method for the PDP are provided, the PDP being capable of suppressing discharge delay due to improved discharge properties of a protective layer, and exhibiting superior image display performance despite having a high-definition cell structure. A magnesium oxide powder layer (16) is formed by distributing magnesium oxide particles (16a) flatly on a surface layer (8). Each of the magnesium oxide particles (16a) includes halogen atoms at and in a vicinity of the surface thereof. The magnesium oxide particles (16a) are manufactured such that the halogen atoms exist particularly at the surface of each of magnesium oxide particles (16a) through to a depth of 4 nm or less toward the core of each of the magnesium oxide particles (16a).
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: December 6, 2011
    Assignee: Panasonic Corporation
    Inventors: Hiroshi Asano, Takahiro Hamada, Seigo Shiraishi
  • Patent number: 8040063
    Abstract: The present invention provides a blue phosphor that exhibits high luminance and shows less luminance degradation during driving of a light-emitting device. The present invention is a blue phosphor represented by the general formula aBaO.bSrO.(1?a?b)EuO.cMgO.dAlO3/2.eWO3, where 0.70?a?0.95, 0?b?0.15, 0.95?c?1.15, 9.00?d?11.00, 0.001?e?0.100, and a+b?0.97 are satisfied. In this blue phosphor, two peaks whose tops are located in a range of diffraction angle 2?=13.0 to 13.6 degrees are present in an X-ray diffraction pattern obtained by measurement on the blue phosphor using an X-ray with a wavelength of 0.774 ?.
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: October 18, 2011
    Assignee: Panasonic Corporation
    Inventors: Kojiro Okuyama, Yayoi Kitamura, Seigo Shiraishi, Kazuhiko Sugimoto, Mituru Harada
  • Publication number: 20110193474
    Abstract: A material suitable for improving the secondary electron emission coefficient of PDPs is provided to thereby enable a PDP to operate at a higher efficiency. Provided is a PDP (200) which includes a protective layer (7) formed by MgO and electron-emitting particles constituted of a crystalline compound dispersed on the protective layer (7) to form an electron emission layer (20). The electron-emitting particles are a crystalline compound whose primary components are indium, oxygen, and one or more selected from the group consisting of calcium, strontium, barium, and rare earth metals.
    Type: Application
    Filed: January 14, 2010
    Publication date: August 11, 2011
    Inventors: Osamu Inoue, Hiroshi Asano, Yayoi Okui, Kojiro Okuyama, Seigo Shiraishi
  • Publication number: 20110163657
    Abstract: The present invention provides a phosphor with less luminance degradation that includes an oxide that is excellent in chemical stability and allows the electrostatic charge of the phosphor surface to shift toward positive direction. The present invention is a phosphor including a phosphor body and a composite oxide on at least a part of the surface of the phosphor body. The composite oxide contains M, Sn, and O, and M is at least one element selected from the group consisting of Ca, Sr, and Ba.
    Type: Application
    Filed: May 12, 2010
    Publication date: July 7, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: Yayoi Okui, Osamu Inoue, Kojiro Okuyama, Seigo Shiraishi
  • Publication number: 20110068680
    Abstract: The present invention provides a phosphor with high luminance and color purity. The phosphor of the present invention is represented by the general formula: aYO3/2·(3?a)CeO3/2·bAlO3/2·cGaO3/2, where 2.80?a?2.99, 1.00?b?5.00, 0?c?4.00, and 4.00?b+c?5.00 are satisfied. In the phosphor, a peak whose peak top is located in the range of diffraction angle 2? of not less than 16.7 degrees but not more than 16.9 degrees is present in an X-ray diffraction pattern obtained by measurement on the phosphor using an X-ray with a wavelength of 0.774 ?.
    Type: Application
    Filed: April 9, 2010
    Publication date: March 24, 2011
    Applicant: Panasonic Corporation
    Inventors: Kojiro Okuyama, Yayoi Okui, Seigo Shiraishi
  • Patent number: 7902756
    Abstract: The present invention is a blue phosphor that is represented by a general formula xSrO.yEuO.MgO.zSiO2, where 2.970?x?3.500, 0.006?y?0.030, and 1.900?z?2.100. This blue phosphor has a crystal structure that is essentially a merwinite structure, and the crystal structure has a unit cell volume of 714.8 ?3 or less. Or, in this blue phosphor, a peak appearing around 2?=22.86 degrees in an X-ray diffraction pattern obtained by measurement of the blue phosphor using an X-ray with a wavelength of 0.773 ? has a one-fifth value width of 0.17 degrees or less. Furthermore, the present invention is a light-emitting device having a phosphor layer including the phosphor. A suitable example of the light-emitting device is a plasma display panel.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: March 8, 2011
    Assignee: Panasonic Corporation
    Inventors: Masahiro Sakai, Seigo Shiraishi, Takehiro Zukawa, Kojiro Okuyama
  • Publication number: 20100259466
    Abstract: The present invention aims to improve efficiency of a PDP by providing a material suitable for improving a secondary electron emission coefficient of the PDP. In order to achieve the aim, in a PDP 200, an electron emission layer 20 is formed by dispersing electron emissive particles including a crystalline compound on a protective layer 7 made of MgO. The crystalline compound is, for example, CaSnO3, SrSnO3, BaSnO3, or a solid solution of two or more of them (e.g. (Ca, Sr)SnO3 and (Sr, Ba)SnO3).
    Type: Application
    Filed: December 25, 2008
    Publication date: October 14, 2010
    Inventors: Osamu Inoue, Hiroshi Asano, Yayoi Okui, Kojiro Okuyama, Seigo Shiraishi, Yukihiro Morita, Kyohei Yoshino, Masanori Miura
  • Publication number: 20100259158
    Abstract: A plasma display panel (200) of the present invention includes a first panel (1) and a second panel (8). A discharge space (14) is formed between the first panel (1) and the second panel (8). In the plasma display panel (200), an electron emitting material (20) is disposed to face the discharge space (14). The electron emitting material (20) contains Sn, an alkali metal, O (oxygen), and at least one element selected from the group consisting of Ca, Sr, and Ba.
    Type: Application
    Filed: July 22, 2009
    Publication date: October 14, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Yayoi Okui, Osamu Inoue, Kojiro Okuyama, Seigo Shiraishi
  • Publication number: 20100237764
    Abstract: The blue phosphor of the present invention includes ZrO2 and a metal aluminate that is represented by the general formula aBaO.bSrO.(1?a?b)EuO.cMgO.dAlO3/2.eWO3, where 0.70?a?0.95, 0?b?0.15, 0.95?c?1.15, 9.00?d?11.00, 0.001?e?0.200, and a+b?0.97 are satisfied. This blue phosphor has a ZrO2 content of 0.01 to 1.00% by weight. In the blue phosphor of the present invention, two peaks whose tops are located in a range of diffraction angle 2?=13.0 to 13.6 degrees are present in an X-ray diffraction pattern obtained by measurement on the blue phosphor using an X-ray with a wavelength of 0.774 ?.
    Type: Application
    Filed: July 3, 2009
    Publication date: September 23, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Kojiro Okuyama, Yayoi Okui, Seigo Shiraishi