Patents by Inventor Hisanobu Azuma

Hisanobu Azuma 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: 20100097301
    Abstract: A light emitting apparatus includes a plurality of light emitting devices including luminous bodies, and a plurality of resistors made of the same material having negative resistance-temperature characteristics, the plurality of resistors being connected respectively in series to the plurality of light emitting devices. When the plurality of resisters are at the same temperature, one or ones among the plurality of resistors, which exhibit higher temperatures during driving, have larger resistance values than other among the plurality of resistors, which exhibit lower temperatures during the driving.
    Type: Application
    Filed: October 16, 2009
    Publication date: April 22, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Toshiharu Sumiya, Hisanobu Azuma, Jun Iba
  • Patent number: 7507134
    Abstract: In a producing method for an electron beam emitting device, a position of a stray emission source constituting an unnecessary electron emitting part on a cathode substrate is detected, and an energy is locally applied to the detected position thereby eliminating the stray emission source, thereby providing an excellent electron beam apparatus without a deterioration in a constituent member or a trouble by an accidental discharge.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: March 24, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jun Iba, Hisanobu Azuma
  • Publication number: 20090072697
    Abstract: A convex portion 2 having a specific sectional shape is formed on a substrate 1 between electrodes 3 and 4, and a gap 6 is formed on a conductive film 5, connecting the electrodes 3 and 4, on the convex portion 2, whereby the distance from the center of the gap 6 serving as a electron-emitting portion to the stagnation point is reduced so as to enhance an electron emission efficiency.
    Type: Application
    Filed: September 12, 2008
    Publication date: March 19, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tamayo Hiroki, Hisanobu Azuma, Jun Iba
  • Publication number: 20090058252
    Abstract: A manufacturing method of an electron-emitting device according to the present invention includes the steps of: preparing a substrate having a first electrode and a second electrode, and a conductive film for connecting the first electrode and the second electrode; and forming a gap on the conductive film by applying a voltage between the first electrode and the second electrode; wherein a planar shape of the conductive film has a V-shape portion between the first electrode and the second electrode.
    Type: Application
    Filed: August 22, 2008
    Publication date: March 5, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: HIROKO TAKADA, HISANOBU AZUMA, JUN IBA
  • Publication number: 20090009438
    Abstract: An image display apparatus of this invention includes a neighborhood data integration section 20 which integrates image data on respective colors corresponding to electron emitting devices proximate to an electron emitting device to be driven, and corresponding to a phosphor contributing to a halation, an adder 6 adds the integrated image data R22, G22, and B22 on the respective colors, a coefficient operation section 7 which multiplies an addition result by a predetermined coefficient according to a luminous intensity of the halation, an adder 8 which adds outputs R23, G23, and B23 obtained by inverting a sign of multiplication results to image data R14, G14, and B14 corresponding to the electron emitting device to be driven, respectively, and a comparator 11 which compares an addition result with zero in magnitude, and which outputs a driving signal R25 for the respective colors.
    Type: Application
    Filed: June 30, 2008
    Publication date: January 8, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: IZUMI KANAI, Hisanobu Azuma
  • Publication number: 20080309592
    Abstract: By preventing an electron-emitting device from being short-circuited when the discharge occurs, currents flown due to the short circuit are reduced to reduce effects of a discharge.
    Type: Application
    Filed: May 29, 2008
    Publication date: December 18, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yasuo Ohashi, Hisanobu Azuma, Jun Iba
  • Patent number: 7432884
    Abstract: An image display apparatus of this invention includes a neighborhood data integration section 20 which integrates image data on respective colors corresponding to electron emitting devices proximate to an electron emitting device to be driven, and corresponding to a phosphor contributing to a halation, an adder (6)adds the integrated image data (R22, G22, and B22) on the respective colors, a coefficient operation section (7) which multiplies an addition result by a predetermined coefficient according to a luminous intensity of the halation, an adder (8) which adds outputs (R23, G23, and B23) obtained by inverting a sign of multiplication results to image data (R14, G14, and B14) corresponding to the electron emitting device to be driven, respectively, and a comparator (11) which compares an addition result with zero in magnitude, and which outputs a driving signal (R25) for the respective colors.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: October 7, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Izumi Kanai, Hisanobu Azuma
  • Publication number: 20080238287
    Abstract: The invention provides an electron beam apparatus having: a rear plate having a plurality of electron-emitting devices each provided with a device electrode, and a plurality of wirings connected to the device electrodes; and a face plate being provided with an anode electrode, and being arranged in opposition to the rear plate so as to be irradiated with an electron emitted from the electron-emitting device, wherein the device electrode is electrically connected to the wiring through an additional electrode, and the additional electrode is formed from an electroconductive material of which phase transition from a solid phase directly into a vapor phase is caused at a temperature not lower than a melting point of the device electrode within an evacuated atmosphere.
    Type: Application
    Filed: March 24, 2008
    Publication date: October 2, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Jun Iba, Hisanobu Azuma
  • Publication number: 20080238288
    Abstract: A three-dimensional structure forming a space in which a wiring-side portion of a device electrode is located is arranged on a rear plate. A surface potential of the three-dimensional structure is defined so that an electric field intensity of the space becomes weaker than an average electric field intensity expressed below, average electric field intensity=Va/d, where Va is application voltage of an anode electrode, and d is an interval between a rear plate and the face plate. The device electrode includes a high-temperature portion where temperature locally rises when current flows through the device electrode. The high-temperature portion is positioned in the space or at a distance of less than or equal to 20 ?m from the space.
    Type: Application
    Filed: March 20, 2008
    Publication date: October 2, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Jun Iba, Hisanobu Azuma
  • Patent number: 7427826
    Abstract: There provided is an electron beam apparatus of preventing surface creeping discharge from newly arising due to discharge that arises between an anode electrode and an electron-emitting device. In an electron-emitting device including a scan signal device electrode and an information signal device electrode, a portion of the scan signal device electrode is covered by an insulating layer of insulating scan signal wiring from information signal wiring, an additional electrode is connected to the scan signal device electrode at an end portion of the insulating layer and the additional electrode is configured so that energy Ee being lost due to melting of the additional electrode is larger than energy Ea of discharge current flowing in to the electron-emitting device.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: September 23, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jun Iba, Yasuo Ohashi, Hisanobu Azuma, Takahiro Hachisu, Masanori Takahashi
  • Patent number: 7427830
    Abstract: In an image display apparatus, by providing an insulating member which covers an electroconductive member existing in a region out of an electron beam emitting region, an unnecessary discharge from the electroconductive member is suppressed and a damage due to the discharge is prevented, thereby realizing a long life of the apparatus.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: September 23, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirotomo Taniguchi, Hisanobu Azuma
  • Patent number: 7382088
    Abstract: To implement an electrode structure which brings about extinction of arc quickly in a reliable manner without maintaining discharge current, and provide an electron source and image display apparatus equipped with the electrode structure. Device electrodes 2 and 3 are partially narrowed in areas where they are connected to scan wiring 6 and signal wiring 4, and an insulating layer 5 which insulates the scan wiring 6 and signal wiring 4 are extended to cover the narrow portions of the device electrodes 2 and 3.
    Type: Grant
    Filed: August 11, 2006
    Date of Patent: June 3, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hisanobu Azuma, Jun Iba, Yasuo Ohashi
  • Patent number: 7381578
    Abstract: A method according to the present invention is for electrifying a plurality of electric conductors arranged on a substrate including the step of setting an average temperature difference during electrifying processing between a region S0 in that the plurality of electric conductors on the substrate are arranged and a circumferential region S1 of the region S0 at 15° C. or more, and the substrate satisfies the relational expression: L1/L0>E??T/?th?1. where L0[m]: the width of the region S0 L1[m]: the width of the region S1 ?T[K]: the average temperature difference E[Pa]: the Young's modulus of the substrate ?[/K]: the coefficient of linear thermal expansion of the substrate ?th[Pa]: the material constant of the substrate.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: June 3, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hisanobu Azuma
  • Publication number: 20070046173
    Abstract: To implement an electrode structure which brings about extinction of arc quickly in a reliable manner without maintaining discharge current, and provide an electron source and image display apparatus equipped with the electrode structure. Device electrodes 2 and 3 are partially narrowed in areas where they are connected to scan wiring 6 and signal wiring 4, and an insulating layer 5 which insulates the scan wiring 6 and signal wiring 4 are extended to cover the narrow portions of the device electrodes 2 and 3.
    Type: Application
    Filed: August 11, 2006
    Publication date: March 1, 2007
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hisanobu Azuma, Jun Iba, Yasuo Ohashi
  • Publication number: 20070020787
    Abstract: A method according to the present invention is for electrifying a plurality of electric conductors arranged on a substrate including the step of setting an average temperature difference during electrifying processing between a region S0 in that the plurality of electric conductors on the substrate are arranged and a circumferential region S1 of the region S0 at 15° C. or more, and the substrate satisfies the relational expression: L1/L0>E??T/?th?1.
    Type: Application
    Filed: September 28, 2006
    Publication date: January 25, 2007
    Inventor: HISANOBU AZUMA
  • Patent number: 7151005
    Abstract: A method according to the present invention is for electrifying a plurality of electric conductors arranged on a substrate including the step of setting an average temperature difference during electrifying processing between a region S0 in that the plurality of electric conductors on the substrate are arranged and a circumferential region S1 of the region S0 at 15° C. or more, and the substrate satisfies the relational expression: L1/L0>E??T/?th?1. where L0[m]: the width of the region S0 L1[m]: the width of the region S1 ?T[K]: the average temperature difference E[Pa]: the Young's modulus of the substrate ?[/K]: the coefficient of linear thermal expansion of the substrate ?th[Pa]: the material constant of the substrate.
    Type: Grant
    Filed: August 3, 2005
    Date of Patent: December 19, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hisanobu Azuma
  • Publication number: 20060192493
    Abstract: An image display apparatus of this invention includes a neighborhood data integration section 20 which integrates image data on respective colors corresponding to electron emitting devices proximate to an electron emitting device to be driven, and corresponding to a phosphor contributing to a halation, an adder (6) adds the integrated image data (R22, G22, and B22) on the respective colors, a coefficient operation section (7) which multiplies an addition result by a predetermined coefficient according to a luminous intensity of the halation, an adder (8) which adds outputs (R23, G23, and B23) obtained by inverting a sign of multiplication results to image data (R14, G14, and B14) corresponding to the electron emitting device to be driven, respectively, and a comparator (11) which compares an addition result with zero in magnitude, and which outputs a driving signal (R25) for the respective colors.
    Type: Application
    Filed: March 9, 2006
    Publication date: August 31, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Izumi Kanai, Hisanobu Azuma
  • Publication number: 20060164001
    Abstract: There provided is an electron beam apparatus of preventing surface creeping discharge from newly arising due to discharge that arises between an anode electrode and an electron-emitting device. In an electron-emitting device including a scan signal device electrode and an information signal device electrode, a portion of the scan signal device electrode is covered by an insulating layer of insulating scan signal wiring from information signal wiring, an additional electrode is connected to the scan signal device electrode at an end portion of the insulating layer and the additional electrode is configured so that energy Ee being lost due to melting of the additional electrode is larger than energy Ea of discharge current flowing in to the electron-emitting device.
    Type: Application
    Filed: January 13, 2006
    Publication date: July 27, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Jun Iba, Yasuo Ohashi, Hisanobu Azuma, Takahiro Hachisu, Masanori Takahashi
  • Patent number: 7046219
    Abstract: An image display apparatus of this invention includes a neighborhood data integration section 20 which integrates image data on respective colors corresponding to electron emitting devices proximate to an electron emitting device to be driven, and corresponding to a phosphor contributing to a halation, an adder 6 adds the integrated image data (R22, G22, and B22) on the respective colors, a coefficient operation section (7) which multiplies an addition result by a predetermined coefficient according to a luminous intensity of the halation, an adder (8) which adds outputs (R23, G23, and B23) obtained by inverting a sign of multiplication results to image data (R14, G14, and B14) corresponding to the electron emitting device to be driven, respectively, and a comparator 11 which compares an addition result with zero in magnitude, and which outputs a driving signal (R25) for the respective colors.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: May 16, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Izumi Kanai, Hisanobu Azuma
  • Publication number: 20060087220
    Abstract: An image forming apparatus in which a first substrate provided with an electron-emitting device and an image displaying member which electrons emitted from the electron-emitting device irradiate are arranged to be opposed is provided with a deflecting means deflecting the electrons emitted from the electron-emitting device and a trapping unit trapping an inert gas ionized by the electrons. Thereby, the damages of the electron-emitting device by the inert gas are prevented, and the life of an image display apparatus is aimed to be elongated.
    Type: Application
    Filed: October 20, 2005
    Publication date: April 27, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tamayo Hiroki, Hisanobu Azuma, Hirotomo Taniguchi