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).
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Patent number: 6761608Abstract: 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: GrantFiled: September 26, 2001Date of Patent: July 13, 2004Assignee: 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
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Patent number: 6758714Abstract: Plasma display panels of the prior art are prone to cross talk leading to unstable image.Type: GrantFiled: July 30, 2001Date of Patent: July 6, 2004Assignee: 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
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Patent number: 6548962Abstract: 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: GrantFiled: February 8, 2000Date of Patent: April 15, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Akira Shiokawa, Ryuichi Murai, Hiroyoshi Tanaka, Yoshiki Sasaki, Masatoshi Kudoh, Masaki Aoki, Hidetaka Higashino, Kinzou Nonomura
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Patent number: 6419540Abstract: 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: GrantFiled: September 26, 2001Date of Patent: July 16, 2002Assignee: 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
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Publication number: 20020036466Abstract: 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: ApplicationFiled: September 26, 2001Publication date: March 28, 2002Inventors: Hiroyoshi Tanaka, Ryuichi Murai, Hideaki Yasui, Yoshiki Sasaki, Akira Shiokawa, Masatoshi Kudoh, Koichi Kotera, Masaki Aoki, Mitsuhiro Ohtani, Shigeo Suzuki, Kinzou Nonomura
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Publication number: 20020034917Abstract: 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: ApplicationFiled: September 26, 2001Publication date: March 21, 2002Inventors: Hiroyoshi Tanaka, Ryuichi Murai, Hideaki Yasui, Yoshiki Sasaki, Akira Shiokawa, Masatoshi Kudoh, Koichi Kotera, Masaki Aoki, Mitsuhiro Ohtani, Shigeo Suzuki, Kinzou Nonomura
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Patent number: 6353287Abstract: 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: GrantFiled: June 16, 1999Date of Patent: March 5, 2002Assignee: 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
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Publication number: 20020017862Abstract: Plasma display panels of the prior art are prone to cross talk leading to unstable image.Type: ApplicationFiled: July 30, 2001Publication date: February 14, 2002Inventors: Yoshiki Sasaki, Ryuichi Murai, Hiroyoshi Tanaka, Hideaki Yasui, Masatoshi Kudoh, Akira Shiokawa, Junichi Hibino, Hidetaka Higashino, Kinzo Nonomura, Shigeo Suzuki, Masaki Aoki
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Patent number: 6328621Abstract: 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: GrantFiled: May 1, 2001Date of Patent: December 11, 2001Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masatoshi Kudoh, Ryuichi Murai, Mitsuhiro Ohtani, Katuyoshi Yamashita, Hideharu Ohmae, Masahiko Konda
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Publication number: 20010024922Abstract: 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: ApplicationFiled: May 1, 2001Publication date: September 27, 2001Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., Ltd.Inventors: Masatoshi Kudoh, Ryuichi Murai, Mitsuhiro Ohtani, Katuyoshi Yamashita, Hideharu Ohmae, Masahiko Konda
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Patent number: 6291943Abstract: 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: GrantFiled: June 4, 1999Date of Patent: September 18, 2001Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Ryuichi Murai, Akira Shiokawa, Hiroyosi Tanaka, Yoshiki Sasaki, Masaki Aoki, Masatoshi Kudoh, Yuusuke Takada, Hiroyuki Kado
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Patent number: 6270390Abstract: 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: GrantFiled: June 14, 2000Date of Patent: August 7, 2001Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masatoshi Kudoh, Ryuichi Murai, Mitsuhiro Ohtani, Katuyoshi Yamashita, Hideharu Ohmae, Masahiko Konda
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Patent number: 6160345Abstract: 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: GrantFiled: November 26, 1997Date of Patent: December 12, 2000Assignee: 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