Patents by Inventor Hiroaki Ibuki

Hiroaki Ibuki 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: 8198799
    Abstract: A display apparatus according to the present invention has a plurality of electroconductive layers outside of an image display area. Mutually adjacent ones of the electroconductive layers are electrically connected by a resistor. The resistor has a first region, and a second region which is more separated from the image display area than the first region. The area of the second region per unit length in the direction separating from the image display area is smaller than the area of the first region.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: June 12, 2012
    Assignees: Canon Kabushiki Kaisha, Kabushiki Kaisha Toshiba
    Inventors: Hiroaki Ibuki, Masahiro Yokota, Keiji Suzuki, Yoshiyuki Kitahara
  • Publication number: 20110254434
    Abstract: A display apparatus according to the present invention has a plurality of electroconductive layers outside of an image display area. Mutually adjacent ones of the electroconductive layers are electrically connected by a resistor. The resistor has a first region, and a second region which is more separated from the image display area than the first region. The area of the second region per unit length in the direction separating from the image display area is smaller than the area of the first region.
    Type: Application
    Filed: June 29, 2011
    Publication date: October 20, 2011
    Applicants: KABUSHIKI KAISHA TOSHIBA, CANON KABUSHIKI KAISHA
    Inventors: HIROAKI IBUKI, MASAHIRO YOKOTA, KEIJI SUZUKI, YOSHIYUKI KITAHARA
  • Patent number: 8018133
    Abstract: A display apparatus according to the present invention has a plurality of electroconductive layers outside of an image display area. Mutually adjacent ones of the electroconductive layers are electrically connected by a resistor. The resistor has a first region, and a second region which is more separated from the image display area than the first region. The area of the second region per unit length in the direction separating from the image display area is smaller than the area of the first region.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: September 13, 2011
    Assignees: Canon Kabushiki Kaisha, Kabushiki Kaisha Toshiba
    Inventors: Hiroaki Ibuki, Masahiro Yokota, Keiji Suzuki, Yoshiyuki Kitahara
  • Patent number: 7834534
    Abstract: An illuminant substrate includes a substrate, first and second light emitting members provided on the substrate, a first anode covering the first light emitting member, a second anode covering the second light emitting member, a resistor located between the first and second light emitting members and electrically connecting the first and second anodes, and a rib laminated on the resistor. A side face of the resistor facing the first light emitting member projects toward the first light emitting member further than a side face of the rib facing the first light emitting member, and a side face of the resistor facing the second light emitting member projects toward the second light emitting member further than a side face of the rib facing the second light emitting member.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: November 16, 2010
    Assignees: Canon Kabushiki Kaisha, Kabushiki Kaisha Toshiba
    Inventors: Hiroaki Ibuki, Masahiro Yokota, Masaaki Suzuki, Keiji Suzuki
  • Patent number: 7834535
    Abstract: A flat panel type display apparatus, which includes: a front substrate having a plurality of phosphor layers, an anode covering at least the plurality of phosphor layers, an electrode for applying a voltage to the anode, and a resistor member connecting the anode to the electrode; and a rear substrate having a plurality of electron-emitting devices corresponding to the plurality of phosphor layers, is characterized by including an insulating layer, and in that the insulating layer overlaps with the resistor member in an area, and isolates the anode formed in the area from the resistor member.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: November 16, 2010
    Assignees: Canon Kabushiki Kaisha, Kabushiki Kaisha Toshiba
    Inventors: Hiroaki Ibuki, Masahiro Yokota, Keiji Suzuki
  • Patent number: 7821191
    Abstract: A display apparatus includes an electron source; a substrate; a light emitting body arranged on the substrate and emitting light by being irradiated by an electron emitted from the electron source; an anode disposed on the substrate and supplied with a voltage for accelerating the electron; and an electrode for supplying the voltage to the anode, the electrode being disposed along a side of the substrate, and the electrode has a plurality of electrode films, the electrode films including two electrode films adjacent to each other, and a resistor film connecting between the electrode films, and a length of the portion opposing the other electrode film in one electrode film from among the two electrode films is longer than a length of the one electrode film in a direction orthogonal to the longitudinal direction of the electrode.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: October 26, 2010
    Assignees: Canon Kabushiki Kaisha, Kabushiki Kaisha Toshiba
    Inventors: Masanori Takahashi, Hiroaki Ibuki, Keiji Suzuki
  • Patent number: 7741767
    Abstract: An image display apparatus including a rear plate and a face plate facing the rear plate; wherein the rear plate includes an electron-emitting device; and the face plate includes a light-emitting body for emitting light through irradiation of electrons from the electron-emitting device, and a metal back arranged between the electron-emitting device and the light-emitting body. The light-emitting body includes a first region in which a luminance with respect to a maximum value of a luminance in the light-emitting body is greater than or equal to 50% and a second region in which the luminance is less than 50%; and an arithmetic mean deviation of the profile (Ra) of the metal back in the second region is larger than the arithmetic mean deviation of the profile (Ra) of the metal back in the first region.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: June 22, 2010
    Assignees: Canon Kabushiki Kaisha, Kabushiki Kaisha Toshiba
    Inventors: Masahiro Yokota, Tsuyoshi Oyaizu, Hiroaki Ibuki
  • Publication number: 20080174231
    Abstract: A display apparatus includes an electron source; a substrate; a light emitting body arranged on the substrate and emitting light by being irradiated by an electron emitted from the electron source; an anode disposed on the substrate and supplied with a voltage for accelerating the electron; and an electrode for supplying the voltage to the anode, the electrode being disposed along a side of the substrate, and the electrode has a plurality of electrode films, the electrode films including two electrode films adjacent to each other, and a resistor film connecting between the electrode films, and a length of the portion opposing the other electrode film in one electrode film from among the two electrode films is longer than a length of the one electrode film in a direction orthogonal to the longitudinal direction of the electrode.
    Type: Application
    Filed: December 20, 2007
    Publication date: July 24, 2008
    Applicants: CANON KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBA
    Inventors: MASANORI TAKAHASHI, HIROAKI IBUKI, KEIJI SUZUKI
  • Publication number: 20080174230
    Abstract: A flat panel type display apparatus, which includes: a front substrate having a plurality of phosphor layers, an anode covering at least the plurality of phosphor layers, an electrode for applying a voltage to the anode, and a resistor member connecting the anode to the electrode; and a rear substrate having a plurality of electron-emitting devices corresponding to the plurality of phosphor layers, is characterized by including an insulating layer, and in that the insulating layer overlaps with the resistor member in an area, and isolates the anode formed in the area from the resistor member.
    Type: Application
    Filed: December 20, 2007
    Publication date: July 24, 2008
    Applicants: CANON KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBA
    Inventors: HIROAKI IBUKI, MASAHIRO YOKOTA, KEIJI SUZUKI
  • Publication number: 20080143244
    Abstract: There is provided an illuminant substrate comprising: a substrate; first and second light emitting members provided on the substrate; a first anode that covers the first light emitting member; a second anode that covers the second light emitting member; and a resistor that is located between the first and second light emitting members and electrically connects the first and second anode; wherein the resistor has at least a first layer and a second layer laminated on the first layer; and an edge of the first layer facing the first light emitting member projects toward the first light emitting member further than an edge of the second layer facing the first light emitting member.
    Type: Application
    Filed: December 10, 2007
    Publication date: June 19, 2008
    Applicants: CANON KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiroaki Ibuki, Masahiro Yokota, Masaaki Suzuki, Keiji Suzuki
  • Publication number: 20080111467
    Abstract: An image display apparatus including a rear plate and a face plate facing the rear plate; wherein the rear plate includes an electron-emitting device; and the face plate includes a light-emitting body for emitting light through irradiation of electrons from the electron-emitting device, and a metal back arranged between the electron-emitting device and the light-emitting body. The light-emitting body includes a first region in which a luminance with respect to a maximum value of a luminance in the light-emitting body is greater than or equal to 50% and a second region in which the luminance is less than 50%; and an arithmetic mean deviation of the profile (Ra) of the metal back in the second region is larger than the arithmetic mean deviation of the profile (Ra) of the metal back in the first region.
    Type: Application
    Filed: November 6, 2007
    Publication date: May 15, 2008
    Applicants: CANON KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBA
    Inventors: MASAHIRO YOKOTA, Tsuyoshi Oyaizu, Hiroaki Ibuki
  • Patent number: 7221085
    Abstract: A front substrate of an image display device has a phosphor screen and a metal back layer superposed on the phosphor screen. A plurality of electron emitting elements which emit electrons toward the phosphor screen are located on a rear substrate opposed to the front substrate. The metal back layer has a region which corresponds to the phosphor screen and is divided by gaps g1 in a first direction and gaps g2 in a second direction perpendicular to the first direction such that there are relations g1<g2, and ?g1<?g2, where ?g1 and ?g2 are sheet resistances at the gaps g1 and g2, respectively.
    Type: Grant
    Filed: April 14, 2006
    Date of Patent: May 22, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hirotaka Murata, Hiroaki Ibuki, Takashi Nishimura
  • Publication number: 20060290264
    Abstract: A front substrate, which is included in an image display device, has a metal back layer which is laid over a phosphor screen and is composed of a plurality of insular divisional electrodes. The divisional electrode is composed of at least two row segments extending in a row direction X, and column segments which extend in a column direction Y and connect end portions of the row segments.
    Type: Application
    Filed: August 30, 2006
    Publication date: December 28, 2006
    Inventors: Masataka Tsunemi, Hirotaka Murata, Hiroaki Ibuki, Yuuji Haraguchi
  • Publication number: 20060181194
    Abstract: A front substrate of an image display device has a phosphor screen and a metal back layer superposed on the phosphor screen. A plurality of electron emitting elements which emit electrons toward the phosphor screen are located on a rear substrate opposed to the front substrate. The metal back layer has a region which corresponds to the phosphor screen and is divided by gaps g1 in a first direction and gaps g2 in a second direction perpendicular to the first direction such that there are relations g1<g2, and ?g1<?g2, where ?g1 and ?g2 are sheet resistances at the gaps g1 and g2, respectively.
    Type: Application
    Filed: April 14, 2006
    Publication date: August 17, 2006
    Inventors: Hirotaka Murata, Hiroaki Ibuki, Takashi Nishimura
  • Publication number: 20060091781
    Abstract: A front substrate of an image display device comprises a phosphor screen, a metal back layer lapped on the phosphor screen and having a plurality of divided regions spaced from one another, a common electrode which applies voltage to the metal back layer, and a plurality of connecting resistors which connect the common electrode and the plurality of divided regions of the metal back layer. A plurality of electron emitting elements which emit electrons toward the phosphor screen are arranged on a rear substrate opposed to the front substrate. The common electrode is covered by a coat member having a sheet resistance higher than that of the connecting resistors.
    Type: Application
    Filed: December 19, 2005
    Publication date: May 4, 2006
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yuuji Haraguchi, Masataka Tsunemi, Hiroaki Ibuki, Hirotaka Murata
  • Patent number: 6414425
    Abstract: A vacuum envelope for cathode-ray tube comprises a panel having a flat outer surface and a convex curved inner surface, and a substantially rectangular fluorescent screen (14) with an aspect ratio of M:N is formed in this inner surface. In the inner surface of the panel (12), the gaps &Dgr;H(r), &Dgr;V(r), and &Dgr;D(r) from the center on the horizontal, vertical and diagonal axes of the fluorescent screen (14) are determined in a specific relationship. By forming a proper curved surface in the inner surface of a panel (12) whose outer surface is a flat surface, the strength of the vacuum envelope is maintained, deterioration of visual recognition of flatness is suppressed, and, in the color cathode ray tube, the workability of the shadow mask is further enhanced.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: July 2, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiro Yokota, Hiroaki Ibuki
  • Patent number: 6396206
    Abstract: An electron gun which emits three electron beams consisting of a center beam and paired side beams arranged in line in the horizontal axis is arranged in the neck of the vacuum envelope. A neck-side orbital correction coil unit for over-converging the side beams running toward the peripheral portion of a phosphor screen and a panel-side orbital correction coil unit for under-converging the side beams running toward the peripheral portion of the phosphor screen are provided between the cathode of the electron gun and the phosphor screen. The panel-side orbital correction coil unit has four orbital correction coils provided inside the magnetic core of a deflection yoke. Each orbital correction coil includes paired coil wires extending in the tube axis direction. One of the coil wires is positioned at an angle of 10 to 30° to the vertical axis, and the current flows from the neck side toward the panel through this coil wire.
    Type: Grant
    Filed: February 4, 2000
    Date of Patent: May 28, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yuuichi Sano, Masahiro Yokota, Hiroaki Ibuki
  • Patent number: 6380667
    Abstract: A color cathode-ray tube having at least one trajectory correction device including a plurality of trajectory correction coils, and a current supply circuit for supplying current to these coils. The trajectory correction device functions to over-converge or under-converge a pair of side beams at a peripheral portion of the phosphor screen relative to a center of the phosphor screen. The trajectory correction device produces a magnetic field such that there is a position in the produced magnetic field where no force is exerted on the three electron beams. This position is separated from a plane including a tube axis, and a first direction or a second direction. In this color cathode-ray tube apparatus with this structure, no degradation occurs in focusing or distortion characteristics even where the trajectory correction device is provided, for example, in realizing a flat screen by using a press-formed shadow mask.
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: April 30, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiro Yokota, Yuuichi Sano, Hiroaki Ibuki
  • Publication number: 20010002950
    Abstract: An exposure device includes a support for supporting a panel, a light source unit for radiating a light beam onto the panel through a shadow mask, and optical lenses for correcting the trajectory of the light beam from the light source unit. The light source unit is movable between three positions corresponding individually to the positions of emission of the three electron beams from the electron gun, and is inclined when the light source unit is moved to the position corresponding to each side beam. One of the optical lenses is shaped so that a space in the pattern at an end portion of the vertical axis of the panel is changed relatively to a space in the pattern in the center of the panel when the screen forming layer is printed with the light source unit moved to the position corresponding to each side beam.
    Type: Application
    Filed: December 7, 2000
    Publication date: June 7, 2001
    Inventor: Hiroaki Ibuki