Patents by Inventor Kanako Miyashita

Kanako Miyashita 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: 7422502
    Abstract: A PDP with superior light-emitting characteristics and color reproduction is achieved by setting the chromaticity coordinate y (the CIE color specification) of light to 0.08 or less, more preferably to 0.07 or less, or 0.06 or less, enabling the color temperature of light to be set to 7,000K or more, and further to 8,000K or more, 9,000K or more, or 10,000K or more. The PDP is manufactured by a method in which the processes for heating the fluorescent substances such as the fluorescent substance baking, sealing material temporary baking, bonding, and exhausting processes are performed in the dry gas atmosphere, or in an atmosphere in which a dry gas is circulated at a pressure lower than the atmospheric pressure.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: September 9, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroyuki Kado, Mitsuhiro Ohtani, Masaki Aoki, Kanako Miyashita
  • Patent number: 7348729
    Abstract: A plasma display panel having excellent electron emission properties and a method of making the same. A plasma display panel is provided with a protective layer having a dense growth of columnar crystals formed on a dielectric layer. A middle layer can be provided for improving orientation of the columnar crystals. A heating step creates seed crystals to increase the width and growth of columnar crystals with a selective orientation and greater diameter. The area of any exposed surfaces on the protective layer becomes smaller and absorption of impurities decreases. A layer of grain crystals or an amorphic crystal layer is initially deposited on the dielectric layer to establish wider area seed crystals of a desired orientation. A vacuum evaporated complimentary protective layer can then be grown with the improved configuration.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: March 25, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kanako Miyashita, Koichi Kotera, Akira Shiokawa
  • Patent number: 7329991
    Abstract: A plasma display panel operated at a high luminous efficiency even with a fine cell structure and its manufacturing method. An AC type PDP1 has a phosphor film 31 comprising a thinned crystal over the surface of a dielectric protecting film 14 in a front panel 10 The phosphor film 31 is a film formed by EB evaporation, the film thickness of which is set in a range where a sufficient luminous efficiency and a visible light penetration efficiency can be secured when the phosphor film 31 is irradiated with ultraviolet rays.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: February 12, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kanako Miyashita, Hiroyuki Kado
  • Patent number: 7315120
    Abstract: A PDP with superior light-emitting characteristics and color reproduction is achieved by setting the chromaticity coordinate y (the CIE color specification) of light to 0.08 or less, more preferably to 0.07 or less, or 0.06 or less, enabling the color temperature of light to be set to 7,000K or more, and further to 8,000K or more, 9,000K or more, or 10,000K or more. The PDP is manufactured by a method in which the processes for heating the fluorescent substances such as the fluorescent substance baking, sealing material temporary baking, bonding, and exhausting processes are performed in the dry gas atmosphere, or in an atmosphere in which a dry gas is circulated at a pressure lower than the atmospheric pressure.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: January 1, 2008
    Assignee: Matsushita Electic Industrial Co., Ltd.
    Inventors: Hiroyuki Kado, Mitsuhiro Ohtani, Masaki Aoki, Kanako Miyashita
  • Patent number: 7235928
    Abstract: A gas discharge panel capable of high-speed driving at a low drive voltage, while suppressing the occurrence of write errors in a write period, and a manufacturing method for the same. To achieve this, in the gas discharge panel of the present invention, a secondary gas formed from at least one of carbon dioxide, water vapor, oxygen and nitrogen is induced into discharge spaces 30 evacuated until the residual gas pressure is 0.02 mPa or less, and an He—Xe or Ne—Xe rare gas (discharge gas) is induced into discharge spaces 30. The amount of the secondary gas included within discharge spaces 30 when, for example, carbon dioxide is included therein, is suitably set in terms of both a discharge starting voltage and an electron emission ability, so that the partial pressure of the carbon dioxide is in a range of 0.05 mPa to 0.5 mPa inclusive.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: June 26, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akira Shiokawa, Koji Akiyama, Tetsuya Imai, Katsutoshi Shindo, Hidetaka Higashino, Koichi Kotera, Kanako Miyashita
  • Patent number: 7175493
    Abstract: A plasma display panel capable of realizing improvement in the characteristics thereof, such as lower discharge voltage, more stable discharge, higher luminance, higher efficiency, and longer life. During a step of sealing the periphery of substrates or before this sealing step, impurity gas other then inert gas is adsorbed by phosphor layers. The impurity gas is released into discharge gas and the impurity is added to the discharge gas in a controlled manner while the panel is lit. This method can realize improvement in characteristics, such as lower discharge voltage, higher luminance, higher efficiency, and longer life.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: February 13, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masaki Nishimura, Koji Akiyama, Kanako Miyashita, Koji Aoto, Keiji Horikawa, Masaaki Yamauchi
  • Patent number: 7172482
    Abstract: A PDP with superior light-emitting characteristics and color reproduction is achieved by setting the chromaticity coordinate y (the CIE color specification) of light to 0.08 or less, more preferably to 0.07 or less, or 0.06 or less, enabling the color temperature of light to be set to 7,000K or more, and further to 8,000K or more, 9,000K or more, or 10,000K or more. The PDP is manufactured by a method in which the processes for heating the fluorescent substances such as the fluorescent substance baking, sealing material temporary baking, bonding, and exhausting processes are performed in the dry gas atmosphere, or in an atmosphere in which a dry gas is circulated at a pressure lower than the atmospheric pressure.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: February 6, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroyuki Kado, Mitsuhiro Ohtani, Masaki Aoki, Kanako Miyashita
  • Patent number: 7140940
    Abstract: The present invention intends to provide a manufacturing method for a PDP that can continuously apply phosphor ink for a long time and can accurately and evenly produce phosphor layers even when the cell construction is very fine. To do so, phosphor ink is continuously expelled from a nozzle while the nozzle moves relative to channels between partition walls formed on a plate so as to scan and apply phosphor ink to the channels. While doing so the path taken by the nozzle within each channel between a pair of partition walls is adjusted based on position information for the channel. When phosphor particles is successively applied to a plurality of channels, phosphor ink is continuously expelled from the nozzle even when the nozzle is positioned away from the channels. The phosphor ink is composed of: phosphor particles that have an average particle diameter of 0.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: November 28, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroyuki Kawamura, Shigeo Suzuki, Masaki Aoki, Kanako Miyashita, Mitsuhiro Ohtani, Hiroyuki Kado, Keisuke Sumida, Nobuyuki Kirihara
  • Patent number: 7131879
    Abstract: A PDP with superior light-emitting characteristics and color reproduction is achieved by setting the chromaticity coordinate y (the CIE color specification) of light to 0.08 or less, more preferably to 0.07 or less, or 0.06 or less, enabling the color temperature of light to be set to 7,000K or more, and further to 8,000K or more, 9,000K or more, or 10,000K or more. The PDP is manufactured by a method in which the processes for heating the fluorescent substances such as the fluorescent substance baking, sealing material temporary baking, bonding, and exhausting processes are performed in the dry gas atmosphere, or in an atmosphere in which a dry gas is circulated at a pressure lower than the atmospheric pressure.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: November 7, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroyuki Kado, Mitsuhiro Ohtani, Masaki Aoki, Kanako Miyashita
  • Patent number: 7040944
    Abstract: A PDP with superior light-emitting characteristics and color reproduction is achieved by setting the chromaticity coordinate y (the CIE color specification) of light to 0.08 or less, more preferably to 0.07 or less, or 0.06 or less, enabling the color temperature of light to be set to 7,000K or more, and further to 8,000K or more, 9,000K or more, or 10,000K or more. The PDP is manufactured by a method in which the processes for heating the fluorescent substances such as the fluorescent substance baking, sealing material temporary baking, bonding, and exhausting processes are performed in the dry gas atmosphere, or in an atmosphere in which a dry gas is circulated at a pressure lower than the atmospheric pressure.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: May 9, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroyuki Kado, Mitsuhiro Ohtani, Masaki Aoki, Kanako Miyashita
  • Patent number: 7037156
    Abstract: A plasma display panel capable of realizing improvement in the characteristics thereof, such as lower discharge voltage, more stable discharge, higher luminance, higher efficiency, and longer life. Before a step of sealing the periphery of substrates, impurity gas containing CO2, H2O and CH4 is other then inert gas is adsorbed by phosphor layers. The impurity gas is released into discharge gas and while the panel is lit. This method can realize improvement in characteristics, such as lower discharge voltage, higher luminance, higher efficiency, and longer life.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: May 2, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masaki Nishimura, Koji Akiyama, Kanako Miyashita, Koji Aoto, Keiji Horikawa, Masaaki Yamauchi
  • Patent number: 6984159
    Abstract: A PDP with superior light-emitting characteristics and color reproduction is achieved by setting the chromaticity coordinate y (the CIE color specification) of light to 0.08 or less, more preferably to 0.07 or less, or 0.06 or less, enabling the color temperature of light to be set to 7,000 K or more, and further to 8,000 K or more, 9,000 K or more, or 10,000 K or more. The PDP is manufactured by a method in which the processes for heating the fluorescent substances such as the fluorescent substance baking, sealing material temporary baking, bonding, and exhausting processes are performed in the dry gas atmosphere, or in an atmosphere in which a dry gas is circulated at a pressure lower than the atmospheric pressure.
    Type: Grant
    Filed: June 15, 1999
    Date of Patent: January 10, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroyuki Kado, Mitsuhiro Ohtani, Masaki Aoki, Kanako Miyashita
  • Publication number: 20050168126
    Abstract: A plasma display panel capable of realizing improvement in the characteristics thereof, such as lower discharge voltage, more stable discharge, higher luminance, higher efficiency, and longer life. During a step of sealing the periphery of substrates or before this sealing step, impurity gas other then inert gas is adsorbed by phosphor layers. The impurity gas is released into discharge gas and the impurity is added to the discharge gas in a controlled manner while the panel is lit. This method can realize improvement in characteristics, such as lower discharge voltage, higher luminance, higher efficiency, and longer life.
    Type: Application
    Filed: March 30, 2005
    Publication date: August 4, 2005
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Masaki Nishimura, Koji Akiyama, Kanako Miyashita, Koji Aoto, Keiji Horikawa, Masaaki Yamauchi
  • Patent number: 6900598
    Abstract: When a gas discharge panel is driven, a voltage is applied between scan and address electrode groups to perform set-up. The voltage waveform has four intervals. In a first interval, the voltage is raised in a short time (less than 10 ?s) to a first voltage, wherein 100 V?first voltage<starting voltage. Then, in a second interval, the voltage is raised to a second voltage no less than the starting voltage and with an absolute gradient smaller than that for the voltage rise in the first interval (no more than 9 V/?s). Next, in a third interval, the voltage is lowered in a short time (no more than 10 ?s) from the second voltage to a third voltage no more than the starting voltage. Following this, in a fourth interval, the voltage is lowered still further (for 100 ?s to 250 ?s) with a gradient smaller than that for the voltage fall in the third interval. The time occupied by the whole voltage waveform should be no more, than 360 ?s.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: May 31, 2005
    Assignee: Matsushita Electric Company Co., Ltd.
    Inventors: Junichi Hibino, Hidetaka Higashino, Nobuaki Nagao, Masaru Sekizawa, Kanako Miyashita, Masafumi Ookawa
  • Publication number: 20050054258
    Abstract: A PDP with superior light-emitting characteristics and color reproduction is achieved by setting the chromaticity coordinate y (the CIE color specification) of light to 0.08 or less, more preferably to 0.07 or less, or 0.06 or less, enabling the color temperature of light to be set to 7,000K or more, and further to 8,000K or more, 9,000K or more, or 10,000K or more. The PDP is manufactured by a method in which the processes for heating the fluorescent substances such as the fluorescent substance baking, sealing material temporary baking, bonding, and exhausting processes are performed in the dry gas atmosphere, or in an atmosphere in which a dry gas is circulated at a pressure lower than the atmospheric pressure.
    Type: Application
    Filed: September 17, 2004
    Publication date: March 10, 2005
    Inventors: Hiroyuki Kado, Mitsuhiro Ohtani, Masaki Aoki, Kanako Miyashita
  • Patent number: 6860780
    Abstract: A method for producing a plasma display panel that has a front substrate and a back substrate disposed to face each other. A pre-baking phosphor layer containing a phosphor and an organic binder is formed on at least one of surfaces of the front substrate and the back substrate that are to face each other. A sealing material that softens with heat is applied to the peripheral region of at least one of the surfaces of the front and back substrates that are to face each other. The front and back substrates are disposed to face each other in a stack. The front and back substrates are heated to burn out the organic binder while supplying a dry gas containing oxygen to an internal space that is formed between the front and back substrates.
    Type: Grant
    Filed: April 4, 2001
    Date of Patent: March 1, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kanako Miyashita, Hiroyuki Kado
  • Publication number: 20050042968
    Abstract: A PDP with superior light-emitting characteristics and color reproduction is achieved by setting the chromaticity coordinate y (the CIE color specification) of light to 0.08 or less, more preferably to 0.07 or less, or 0.06 or less, enabling the color temperature of light to be set to 7,000K or more, and further to 8,000K or more, 9,000K or more, or 10,000K or more. The PDP is manufactured by a method in which the processes for heating the fluorescent substances such as the fluorescent substance baking, sealing material temporary baking, bonding, and exhausting processes are performed in the dry gas atmosphere, or in an atmosphere in which a dry gas is circulated at a pressure lower than the atmospheric pressure.
    Type: Application
    Filed: September 17, 2004
    Publication date: February 24, 2005
    Inventors: Hiroyuki Kado, Mitsuhiro Ohtani, Masaki Aoki, Kanako Miyashita
  • Publication number: 20050042966
    Abstract: A PDP with superior light-emitting characteristics and color reproduction is achieved by setting the chromaticity coordinate y (the CIE color specification) of light to 0.08 or less, more preferably to 0.07 or less, or 0.06 or less, enabling the color temperature of light to be set to 7,000K or more, and further to 8,000K or more, 9,000K or more, or 10,000K or more. The PDP is manufactured by a method in which the processes for heating the fluorescent substances such as the fluorescent substance baking, sealing material temporary baking, bonding, and exhausting processes are performed in the dry gas atmosphere, or in an atmosphere in which a dry gas is circulated at a pressure lower than the atmospheric pressure.
    Type: Application
    Filed: September 17, 2004
    Publication date: February 24, 2005
    Inventors: Hiroyuki Kado, Mitsuhiro Ohtani, Masaki Aoki, Kanako Miyashita
  • Patent number: 6857925
    Abstract: A manufacturing method for a plasma display panel applies phosphorous ink from a nozzle to channels between partition walls as the nozzle moves relative to the channels. The phosphorous ink is redispersed with a dispenser before being expelled from the nozzle. Subsequently, a second plate is placed on the partition walls and the first and second plates are sealed together with a gas medium between the two.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: February 22, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroyuki Kawamura, Shigeo Suzuki, Masaki Aoki, Kanako Miyashita, Mitsuhiro Ohtani, Hiroyuki Kado, Keisuke Sumida, Nobuyuki Kirihara
  • Publication number: 20050035715
    Abstract: A PDP with superior light-emitting characteristics and color reproduction is achieved by setting the chromaticity coordinate y (the CIE color specification) of light to 0.08 or less, more preferably to 0.07 or less, or 0.06 or less, enabling the color temperature of light to be set to 7,000K or more, and further to 8,000K or more, 9,000K or more, or 10,000K or more. The PDP is manufactured by a method in which the processes for heating the fluorescent substances such as the fluorescent substance baking, sealing material temporary baking, bonding, and exhausting processes are performed in the dry gas atmosphere, or in an atmosphere in which a dry gas is circulated at a pressure lower than the atmospheric pressure.
    Type: Application
    Filed: September 17, 2004
    Publication date: February 17, 2005
    Inventors: Hiroyuki Kado, Mitsuhiro Ohtani, Masaki Aoki, Kanako Miyashita