Patents by Inventor Shigeo Kasahara

Shigeo Kasahara 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: 20150103278
    Abstract: An object of the present technology is to provide a liquid crystal display device that includes a capacitance coupling type input device capable of easily being incorporated into the display device. The liquid crystal display device includes a liquid crystal panel and an input device. The liquid crystal panel includes: a TFT substrate having a plurality of pixel electrodes and a common electrode provided so as to be opposed to the pixel electrodes, and further includes a switching element for controlling application of a voltage to the pixel electrodes; and a counter substrate arranged so as to be opposed to the TFT substrate, and having a configuration in which color filters of at least three primary colors are arranged at positions corresponding to the pixel electrodes and a light-shielding portion is arranged between the color filters.
    Type: Application
    Filed: December 19, 2014
    Publication date: April 16, 2015
    Inventors: Manabu INOUE, Hiroyuki KADO, Shigeo KASAHARA, Naoki KOSUGI, Akira TOKAI, Kazushige TAKAGI, Takahito NAKAYAMA
  • Publication number: 20150049061
    Abstract: An object of the present technology is to improve the detection accuracy of a capacitance coupling type input device at a time of touch operation. An input device includes: a plurality of driving electrodes and a plurality of detection electrodes crossing each other; and capacitive elements formed in respective crossed portions between the driving electrodes and the detection electrodes.
    Type: Application
    Filed: October 31, 2014
    Publication date: February 19, 2015
    Inventors: Kazushige TAKAGI, Manabu INOUE, Naoki KOSUGI, Takahito NAKAYAMA, Akira TOKAI, Shigeo KASAHARA, Hiroyuki KADO
  • Publication number: 20150042616
    Abstract: It is an object of the present invention to enhance detection accuracy during a touch operation in a capacitance coupling type input device. The input device includes a plurality of driving electrodes and a plurality of detection electrodes crossing each other, and capacitive elements formed in respective crossed portions between the driving electrodes and the detection electrodes. During a touch detection period, a driving signal is applied to the driving electrodes on a line block basis of scanning signal lines, and touch is detected based on a detection signal output from each of the detection electrodes, and the touch detection period is provided in a display update period in a horizontal scanning period of a display apparatus. Further, a driving signal to be applied to the driving electrodes is applied to a selected line block of the display apparatus to which the scanning signal is not being applied.
    Type: Application
    Filed: October 27, 2014
    Publication date: February 12, 2015
    Inventors: Kazushige TAKAGI, Manabu INOUE, Naoki KOSUGI, Takahito NAKAYAMA, Akira TOKAI, Shigeo KASAHARA, Hiroyuki KADO
  • Patent number: 8507793
    Abstract: A structure of a panel which can be thinned down to about a panel thickness of a PDP and a manufacturing method thereof are provided. A gas filling hole is provided to a surface of a rear glass substrate of a PDP, the surface coming in contact with a front glass substrate of the PDP. Vacuuming and filling of a discharge gas are performed through the gas filling hole. After filling of the discharge gas, a mechanism for lifting solder iron up and down and supplying solder provided inside a chamber inserts a tip of an ultrasonic soldering iron into the gas filling hole to start supplying a solder which is a material for a plug sealant. When a series of forming steps of the plug sealant are finished, the ultrasonic soldering iron is retreated before the solder is solidified to finish formation of the plug sealant.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: August 13, 2013
    Assignee: Panasonic Corporation
    Inventors: Shigeo Kasahara, Akira Tokai, Manabu Inoue, Naoki Kosugi, Toshiaki Yoshitani
  • Patent number: 8119027
    Abstract: A green phosphor represented by Formula (A1-xTbx)a(B1-yMny)bCcOb+1.5(a+c), wherein A includes La, and Yb and/or Gd, B includes at least one kind selected from Mg, Zn, Sc, V, Cr, Co, Ni, Cu, In, Zr, Nb, Ta, Mo, and Sn, C includes at least one selected from Al, B, Ga, Si, P, Ti, Fe, B, and Ge, 0?x?1, 0?y?1, 0.8?a?1.2, 0<b?1.5, 8?c?30, and having a magnetoplumbite type crystal structure.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: February 21, 2012
    Assignee: Hitachi Plasma Display Limited
    Inventors: Toshiaki Onimaru, Shinya Fukuta, Shigeo Kasahara
  • Patent number: 8114312
    Abstract: A display device comprising at least one phosphor layer, the phosphor layer containing a green phosphor represented by the following formula: (A1-xBx) (Zn1-yMny) Al10O17 wherein, A is an element selected from Ca, Ba and Sr, B is a rare-earth element, x is a number satisfying 0.0001?x?0.1, and y is a number satisfying 0.02?y?0.14.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: February 14, 2012
    Assignee: Hitachi Plasma Patent Licensing Co., Ltd.
    Inventors: Toshiaki Onimaru, Shinya Fukuta, Tomonari Misawa, Hironori Sakata, Shigeo Kasahara
  • Publication number: 20110220384
    Abstract: A structure of a panel which can be thinned down to about a panel thickness of a PDP and a manufacturing method thereof are provided. A gas filling hole is provided to a surface of a rear glass substrate of a PDP, the surface coming in contact with a front glass substrate of the PDP. Vacuuming and filling of a discharge gas are performed through the gas filling hole. After filling of the discharge gas, a mechanism for lifting solder iron up and down and supplying solder provided inside a chamber inserts a tip of an ultrasonic soldering iron into the gas filling hole to start supplying a solder which is a material for a plug sealant. When a series of forming steps of the plug sealant are finished, the ultrasonic soldering iron is retreated before the solder is solidified to finish formation of the plug sealant.
    Type: Application
    Filed: February 15, 2011
    Publication date: September 15, 2011
    Inventors: Shigeo KASAHARA, Akira Tokai, Manabu Inoue, Naoki Kosugi, Toshiaki Yoshitani
  • Patent number: 7821610
    Abstract: Although portions of electrodes in proximity to a driver IC are covered with an insulating film, part of the electrodes is not covered with the insulating film. Thus, this insulating film absent region functions as an external voltage supply region that receives, from the outside, application of a voltage which is different from an output voltage from a driving unit. When the alignment of the initial state is disarranged, an alignment process is performed by short-circuiting all electrodes of the driving unit and applying a voltage from the outside, through the external voltage supply region, whereby the alignment is restored to the initial state with the driving unit being mounted on a liquid crystal panel.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: October 26, 2010
    Assignee: Fujitsu Limited
    Inventors: Tetsuya Makino, Shinji Tadaki, Toshiaki Yoshihara, Hironori Shiroto, Yoshinori Kiyota, Shigeo Kasahara, Keiichi Betsui
  • Publication number: 20100213414
    Abstract: A green phosphor represented by Formula (A1-xTbx)a(B1-yMny)bCcOb+1.5(a+c), wherein A includes La, and Yb and/or Gd, B includes at least one kind selected from Mg, Zn, Sc, V, Cr, Co, Ni, Cu, In, Zr, Nb, Ta, Mo, and Sn, C includes at least one selected from Al, B, Ga, Si, P, Ti, Fe, B, and Ge, 0?x?1, 0?y?1, 0.8?a?1.2, 0<b?1.5, 8?c?30, and having a magnetoplumbite type crystal structure.
    Type: Application
    Filed: January 13, 2006
    Publication date: August 26, 2010
    Inventors: Toshiaki Onimaru, Shinya Fukuta, Shigeo Kasahara
  • Patent number: 7724229
    Abstract: A voltage corresponding to desired image data is applied to a ferroelectric liquid crystal having a spontaneous polarization at a predetermined cycle to rewrite the displayed image (period A), and then, all voltages applied to the ferroelectric liquid crystal are removed (timing C) to retain the displayed image before the removal (period B). A gate selection period (voltage application period to the ferroelectric liquid crystal) t2 before stopping the voltage application is set longer than a gate selection period (voltage application period to the ferroelectric liquid crystal) t1 in the normal display. Increasing the voltage application period to the ferroelectric liquid crystal provides a sufficient response of the liquid crystal during the gate selection period, thereby realizing high memory ability.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: May 25, 2010
    Assignee: Fujitsu Limited
    Inventors: Toshiaki Yoshihara, Tetsuya Makino, Shinji Tadaki, Hironori Shiroto, Yoshinori Kiyota, Shigeo Kasahara, Keiichi Betsui
  • Publication number: 20090278438
    Abstract: This invention provides a plasma display panel in which a blue fluorescent material layer is provided isolatedly from a green fluorescent material layer to prevent the green fluorescent material from being deteriorated. The plasma display panel includes fluorescent material layers of a plurality of colors provided between a pair of substrates. The fluorescent material layers are partitioned on a color to color basis with a barrier rib having predetermined width and height. Discharge is generated in the area partitioned by the barrier rib to perform display. At least one of the width and the height in the barrier rib for partitioning the blue fluorescent material layer from the green fluorescent material layer adjacent to the blue fluorescent material layer, is larger than that in the other barrier ribs.
    Type: Application
    Filed: December 26, 2005
    Publication date: November 12, 2009
    Inventors: Minoru Hasegawa, Akira Tokai, Shigeo Kasahara
  • Patent number: 7499012
    Abstract: After rewriting the displayed image by applying a voltage corresponding to desired image data to a ferroelectric liquid crystal through TFTs at a predetermined cycle, the application of voltage to the ferroelectric liquid crystal is stopped, and the image displayed just before stopping the application of voltage is retained. In this memory display period, a gate-off voltage is applied to turn off the TFTs. In this memory display period, the emission intensity of a back-light is lowered compared to that in a normal display period. Before stopping the application of voltage to the ferroelectric liquid crystal, a voltage corresponding to an image to be displayed after stopping the application of voltage is applied. Before resuming the application of voltage corresponding to the image data to the ferroelectric liquid crystal, a voltage for causing all pixels to display black image is applied.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: March 3, 2009
    Assignee: Fujitsu Limited
    Inventors: Toshiaki Yoshihara, Tetsuya Makino, Shinji Tadaki, Hironori Shiroto, Yoshinori Kiyota, Shigeo Kasahara, Keiichi Betsui
  • Publication number: 20080315750
    Abstract: A display device comprising at least one phosphor layer, the phosphor layer containing a green phosphor represented by the following formula: (A1-xBx) (Zn1-yMny) Al10O17 wherein, A is an element selected from Ca, Ba and Sr, B is a rare-earth element, x is a number satisfying 0.0001?x?0.1, and y is a number satisfying 0.02?y?0.14.
    Type: Application
    Filed: February 28, 2005
    Publication date: December 25, 2008
    Applicant: HITACHI PLASAMA PATENT LICENSING CO., LTD.
    Inventors: Toshiaki Onimaru, Shinya Fukuta, Tomonari Misawa, Hironori Sakata, Shigeo Kasahara
  • Publication number: 20080191600
    Abstract: A display device comprising at least one phosphor layer, the phosphor layer containing a green phosphor of ? alumina structure represented by the following formula: A(Zn1-x-yMgxMny)Al10O17 wherein, A is an element selected from Ca, Ba and Sr, x is a number satisfying 0.01?x?0.3, and y is a number satisfying 0.02?x?0.14.
    Type: Application
    Filed: March 17, 2005
    Publication date: August 14, 2008
    Inventors: Tomonari Misawa, Shinya Fukuta, Toshiaki Onimaru, Hironori Sakata, Shigeo Kasahara
  • Publication number: 20080194165
    Abstract: The present invention provides a method of manufacturing a plasma display panel that includes forming an electrode on a substrate, forming a dielectric layer which covers the electrode on the substrate, and forming a protective layer which covers the dielectric layer, wherein the protective layer is in contact with a discharge space of the plasma display panel, and wherein the protective layer includes MgO and at least one compound selected from the group consisting of an Al compound, a Y compound, a Ti compound, a Zn compound, a Zr compound, a Ta compound and SiC having an ultraviolet shielding function.
    Type: Application
    Filed: April 4, 2008
    Publication date: August 14, 2008
    Applicant: Fujitsu Limited and Fujitsu Hitachi Plasma Display Limited
    Inventors: Kazunori INOUE, Shigeo Kasahara, Koichi Sakita, Osamu Toyoda, Minoru Hasegawa, Hideki Harada, Keiichi Betsui
  • Patent number: 7372206
    Abstract: The present invention provides that a gas discharge panel substrate assembly comprising: electrodes formed on a substrate, a dielectric layer covering the electrodes, and a protective layer covering the dielectric layer and in contact with a discharge space, wherein the protective layer includes MgO and at least one compound selected from the group consisting of an Al compound, a Ti compound, a Y compound, a Zn compound, a Zr compound, a Ta compound and SiC.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: May 13, 2008
    Assignees: Fujitsu Limited, Fujitsu Hitachi Plasma Display Limited
    Inventors: Kazunori Inoue, Shigeo Kasahara, Koichi Sakita, Osamu Toyoda, Minoru Hasegawa, Hideki Harada, Keiichi Betsui
  • Patent number: 7362404
    Abstract: In a liquid crystal display device, one or a plurality of partition walls adhering to the two substrates are provided in a region between the adhesive member for sealing the peripheral portions of the two substrates and a display region located inside the adhesive member so as to reduce stress applied to the liquid crystal substance. Even when stress is applied to the liquid crystal substance in the peripheral portion of the substrate, the stress is reduced by the partition wall and is not transmitted to the display region on the opposite side of the partition wall. Therefore, even when a crack occurs in the peripheral portion of the substrate due to the stress, the propagation of the crack is stopped by the partition wall, and the crack does not enter the display region.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: April 22, 2008
    Assignee: Fujitsu Limited
    Inventors: Shinji Tadaki, Yoshinori Kiyota, Toshiaki Yoshihara, Hironori Shiroto, Tetsuya Makino, Shigeo Kasahara, Keiichi Betsui
  • Publication number: 20080079666
    Abstract: A plasma display device includes a plasma display panel having a discharge space filled with a discharge gas, the discharge space being formed inside of the panel formed of a front-side substrate assembly and a rear-side substrate assembly bonded to each other, the panel having first and second holes each extending to the discharge space, the first and second holes being coupled to each other via a pipe on the outside of the panel, wherein the first hole is in a position higher than the second hole in a normal mounting state of the panel, or a gas circulating mechanism for circulating the discharge gas is provided in the pipe.
    Type: Application
    Filed: May 4, 2007
    Publication date: April 3, 2008
    Inventors: Tomonari Misawa, Shigeo Kasahara
  • Publication number: 20080079365
    Abstract: A plasma display panel includes a pair of substrates and spacers. On one of the substrates, closed-type barrier ribs for dividing a discharge space into respective cells are formed. The one of the substrates is aligned face to face with the other substrate. The peripheral portion of the substrates is sealed by a sealing material that is softened by applying heat thereto. The spacers are softened at a temperature higher than the softening temperature of the sealing material at the time of applying heat during sealing the substrates and used for bonding top portions of the barrier ribs and the other substrate to each other. The spacers are placed between the top portion of the barrier ribs formed on the one of the substrates and the other substrate.
    Type: Application
    Filed: May 25, 2007
    Publication date: April 3, 2008
    Inventors: Akira Tokai, Shigeo Kasahara
  • Publication number: 20080049382
    Abstract: A method for producing a substrate assembly for a plasma display panel includes the steps of applying a suspension to a dielectric layer covering display electrodes formed on a substrate, the suspension containing a dispersion medium and a large number of magnesium oxide crystals dispersed in the dispersion medium, and thereafter evaporating the dispersion medium to form a layer of the magnesium oxide crystals on the dielectric layer, wherein the dielectric layer has a rugged surface structure having uniformly-dispersed projections and depressions, the rugged surface structure being capable of trapping the magnesium oxide crystals.
    Type: Application
    Filed: December 21, 2006
    Publication date: February 28, 2008
    Inventor: Shigeo Kasahara