Patents by Inventor Masatoshi Kudoh

Masatoshi Kudoh 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: 6761608
    Abstract: A PDP does not suffer from dielectric breakdown even though a dielectric layer is thin, with the problems of conventional PDPs, such as cracks appearing in the glass substrates during the production of the PDP being avoided. To do so, the surface of silver electrodes of the PDP is coated with a 0.1-10 &mgr;m layer of a metallic oxide, on whose surface OH groups exist, such as ZnO, ZrO2, MgO, TiO2, Al2O3, and Cr2O3. The metallic oxide layer is then coated with the dielectric layer. It is preferable to form the metallic oxide layer with the CVD method. The surface of a metallic electrode can be coated with a metallic oxide, which is then coated with a dielectric layer. The dielectric layer can be made of a metallic oxide with a vacuum process method or the plasma thermal spraying method. The dielectric layer formed on electrodes with the CVD method is remarkably thin and flawless.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: July 13, 2004
    Assignee: Matsushita Electric Industrial Co. Ltd.
    Inventors: Hiroyoshi Tanaka, Ryuichi Murai, Hideaki Yasui, Yoshiki Sasaki, Akira Shiokawa, Masatoshi Kudoh, Koichi Kotera, Masaki Aoki, Mitsuhiro Ohtani, Shigeo Suzuki, Kinzou Nonomura
  • Patent number: 6758714
    Abstract: Plasma display panels of the prior art are prone to cross talk leading to unstable image.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: July 6, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshiki Sasaki, Ryuichi Murai, Hiroyoshi Tanaka, Hideaki Yasui, Masatoshi Kudoh, Akira Shiokawa, Junichi Hibino, Hidetaka Higashino, Kinzo Nonomura, Shigeo Suzuki, Masaki Aoki
  • Patent number: 6548962
    Abstract: A gas discharge panel in which cell filled with a discharge gas are arranged as a matrix between a pair of opposed plates, and in which a pair of display electrodes on a surface of one of the pair of opposed plates extend across a plurality of cells in the direction of rows, where a gap between the pair of display electrodes has two discharge gap widths one of which is larger than the other. The voltage is lowered and the power consumption is properly restricted by starting the discharge at the discharge gap at a space having the smaller gap width. An excellent discharge efficiency is secured by sustaining the discharge at a space having the larger gap width.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: April 15, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akira Shiokawa, Ryuichi Murai, Hiroyoshi Tanaka, Yoshiki Sasaki, Masatoshi Kudoh, Masaki Aoki, Hidetaka Higashino, Kinzou Nonomura
  • Patent number: 6419540
    Abstract: A PDP does not suffer from dielectric breakdown though a dielectric layer is thin, with the problems of conventional PDPs, such as cracks appearing in the glass substrates during the production of the PDP being avoided. To do so, the surface of silver electrodes of the PDP is coated with a 0.1-10 &mgr;m layer of a metallic oxide, on whose surface OH groups exist, such as ZnO, ZrO2, MgO, TiO2, Al2O3, and Cr2O3. The metallic oxide layer is then coated with the dielectric layer. It is preferable to form the metallic oxide layer with the CVD method. The surface of a metallic electrode can be coated with a metallic oxide, which is then coated with a dielectric layer. The dielectric layer can be made of a metallic oxide with a vacuum process method or the plasma thermal spraying method. The dielectric layer formed on electrodes with the CVD method is remarkably thin and flawless.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: July 16, 2002
    Assignee: Mastushita Electric Industrial Co., Ltd.
    Inventors: Hiroyoshi Tanaka, Ryuichi Murai, Hideaki Yasui, Yoshiki Sasaki, Akira Shiokawa, Masatoshi Kudoh, Koichi Kotera, Masaki Aoki, Mitsuhiro Ohtani, Shigeo Suzuki, Kinzou Nonomura
  • Publication number: 20020036466
    Abstract: A PDP does not suffer from dielectric breakdown even though a dielectric layer is thin, with the problems of conventional PDPs, such as cracks appearing in the glass substrates during the production of the PDP being avoided. To do so, the surface of silver electrodes of the PDP is coated with a 0.1-10 &mgr;m layer of a metallic oxide, on whose surface OH groups exist, such as ZnO, ZrO2, MgO, TiO2, Al2O3, and Cr2O3. The metallic oxide layer is then coated with the dielectric layer. It is preferable to form the metallic oxide layer with the CVD method. The surface of a metallic electrode can be coated with a metallic oxide, which is then coated with a dielectric layer. The dielectric layer can be made of a metallic oxide with a vacuum process method or the plasma thermal spraying method. The dielectric layer formed on electrodes with the CVD method is remarkably thin and flawless.
    Type: Application
    Filed: September 26, 2001
    Publication date: March 28, 2002
    Inventors: Hiroyoshi Tanaka, Ryuichi Murai, Hideaki Yasui, Yoshiki Sasaki, Akira Shiokawa, Masatoshi Kudoh, Koichi Kotera, Masaki Aoki, Mitsuhiro Ohtani, Shigeo Suzuki, Kinzou Nonomura
  • Publication number: 20020034917
    Abstract: A PDP does not suffer from dielectric breakdown even though a dielectric layer is thin, with the problems of conventional PDPs, such as cracks appearing in the glass substrates during the production of the PDP being avoided. To do so, the surface of silver electrodes of the PDP is coated with a 0.1-10 &mgr;m layer of a metallic oxide, on whose surface OH groups exist, such as ZnO, ZrO2, MgO, TiO2, Al2O3, and Cr2O3. The metallic oxide layer is then coated with the dielectric layer. It is preferable to form the metallic oxide layer with the CVD method. The surface of a metallic electrode can be coated with a metallic oxide, which is then coated with a dielectric layer. The dielectric layer can be made of a metallic oxide with a vacuum process method or the plasma thermal spraying method. The dielectric layer formed on electrodes with the CVD method is remarkably thin and flawless.
    Type: Application
    Filed: September 26, 2001
    Publication date: March 21, 2002
    Inventors: Hiroyoshi Tanaka, Ryuichi Murai, Hideaki Yasui, Yoshiki Sasaki, Akira Shiokawa, Masatoshi Kudoh, Koichi Kotera, Masaki Aoki, Mitsuhiro Ohtani, Shigeo Suzuki, Kinzou Nonomura
  • Patent number: 6353287
    Abstract: Plasma display panels of the prior art are prone to cross talk leading to unstable image. The present invention provides a gas discharge panel comprising a first panel substrate 104 having first electrodes 24, a second panel substrate 108 having second electrodes 23 opposing the first panel substrate 104, a sealing portion provided between peripheries of the two substrates for forming a gas discharge space 112 between the first and second panel substrates 104, 108 and division walls 30 provided on the second panel substrate 108 for dividing the gas discharge space 112, wherein ridges of the division walls 30 are bonded onto the inner surface of the first panel substrate 104 by a frit glass 31.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: March 5, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshiki Sasaki, Ryuichi Murai, Hiroyoshi Tanaka, Hideaki Yasui, Masatoshi Kudoh, Akira Shiokawa, Junichi Hibino, Hidetaka Higashino, Kinzo Nonomura, Shigeo Suzuki, Masaki Aoki
  • Publication number: 20020017862
    Abstract: Plasma display panels of the prior art are prone to cross talk leading to unstable image.
    Type: Application
    Filed: July 30, 2001
    Publication date: February 14, 2002
    Inventors: Yoshiki Sasaki, Ryuichi Murai, Hiroyoshi Tanaka, Hideaki Yasui, Masatoshi Kudoh, Akira Shiokawa, Junichi Hibino, Hidetaka Higashino, Kinzo Nonomura, Shigeo Suzuki, Masaki Aoki
  • Patent number: 6328621
    Abstract: Method and apparatus for manufacturing an electron gun. A beam spot coefficient is obtained from an electrostatic lens magnification and a spherical aberration coefficient of a set resistance distribution. Then, a first process loop is executed to select another resistance distribution that provides an approximate minimum value of the beam spot coefficient. It is then determined whether the beam spot coefficient is an approximate minimum value. The first process loop is repeatedly executed until the beam spot coefficient is determined to be equal to the approximate minimum value. At this point, a second process loop is executed to confirm the minimum value of the beam spot coefficient using an aberration-independent function that is dependent upon the electrostatic lens magnification and is not dependent upon the spherical aberration coefficient.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: December 11, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masatoshi Kudoh, Ryuichi Murai, Mitsuhiro Ohtani, Katuyoshi Yamashita, Hideharu Ohmae, Masahiko Konda
  • Publication number: 20010024922
    Abstract: Method and apparatus for manufacturing an electron gun. A beam spot coefficient is obtained from an electrostatic lens magnification and a spherical aberration coefficient of a set resistance distribution. Then, a first process loop is executed to select another resistance distribution that provides an approximate minimum value of the beam spot coefficient. It is then determined whether the beam spot coefficient is an approximate minimum value. The first process loop is repeatedly executed until the beam spot coefficient is determined to be equal to the approximate minimum value. At this point, a second process loop is executed to confirm the minimum value of the beam spot coefficient using an aberration-independent function that is dependent upon the electrostatic lens magnification and is not dependent upon the spherical aberration coefficient.
    Type: Application
    Filed: May 1, 2001
    Publication date: September 27, 2001
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., Ltd.
    Inventors: Masatoshi Kudoh, Ryuichi Murai, Mitsuhiro Ohtani, Katuyoshi Yamashita, Hideharu Ohmae, Masahiko Konda
  • Patent number: 6291943
    Abstract: The object of the present invention is to provide a gas discharge panel, where the conversion efficiency of discharge energy into visible rays and the panel brightness are improved, with the color purity being improved as far as possible. To achieve this object, in a gas discharge panel, the pressure of discharge gas is set in a range of 800-4000 Torr, that is higher than a conventional gas pressure. Also, a rare gas mixture including helium, neon, xenon, and argon is used as discharge gas charged into discharge spaces, instead of conventional discharge gas. Here, it is preferable that the proportion of Xe is set to 5% by volume or less, that of Ar 0.5% by volume or less, and that of He under 55% by volume. With this rare gas mixture, the light-emission efficiency is improved, with the firing voltage being suppressed.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: September 18, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Ryuichi Murai, Akira Shiokawa, Hiroyosi Tanaka, Yoshiki Sasaki, Masaki Aoki, Masatoshi Kudoh, Yuusuke Takada, Hiroyuki Kado
  • Patent number: 6270390
    Abstract: Method and apparatus for manufacturing an electron gun. A beam spot coefficient is obtained from an electrostatic lens magnification and a spherical aberration coefficient of a set resistance distribution. Then, a first process loop is executed to select another resistance distribution that provides an approximate minimum value of the beam spot coefficient. It is then determined whether the beam spot coefficient is an approximate minimum value. The first process loop is repeatedly executed until the beam spot coefficient is determined to be equal to the approximate minimum value. At this point, a second process loop is executed to confirm the minimum value of the beam spot coefficient using an aberration-independent function that is dependent upon the electrostatic lens magnification and is not dependent upon the spherical aberration coefficient.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: August 7, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masatoshi Kudoh, Ryuichi Murai, Mitsuhiro Ohtani, Katuyoshi Yamashita, Hideharu Ohmae, Masahiko Konda
  • Patent number: 6160345
    Abstract: A PDP does not suffer from dielectric breakdown even though a dielectric layer is thin, with the problems of conventional PDPs, such as cracks appearing in the glass substrates during the production of the PDP being avoided. To do so, the surface of silver electrodes of the PDP is coated with a 0.1-10 .mu.m layer of a metallic oxide on whose surface OH groups exist, such as ZnO, ZrO.sub.2, MgO, TiO.sub.2, Al.sub.2 O.sub.3, and Cr.sub.2 O.sub.3. The metallic oxide layer is then coated with the dielectric layer. It is preferable to form the metallic oxide layer with the CVD method. The surface of a metallic electrode can be coated with a metallic oxide, which is than coated with a dielectric layer. The dielectric layer can be made of a metallic oxide with a vacuum process method or the plasma thermal spraying method. The dielectric layer formed on electrodes with the CVD method is remarkably thin and flawless.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: December 12, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroyoshi Tanaka, Ryuichi Murai, Hideaki Yasui, Yoshiki Sasaki, Akira Shiokawa, Masatoshi Kudoh, Koichi Kotera, Masaki Aoki, Mitsuhiro Ohtani, Shigeo Suzuki, Kinzou Nonomura