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).
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Publication number: 20100097301Abstract: 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: ApplicationFiled: October 16, 2009Publication date: April 22, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Toshiharu Sumiya, Hisanobu Azuma, Jun Iba
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Patent number: 7507134Abstract: 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: GrantFiled: September 20, 2005Date of Patent: March 24, 2009Assignee: Canon Kabushiki KaishaInventors: Jun Iba, Hisanobu Azuma
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Publication number: 20090072697Abstract: 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: ApplicationFiled: September 12, 2008Publication date: March 19, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Tamayo Hiroki, Hisanobu Azuma, Jun Iba
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Publication number: 20090058252Abstract: 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: ApplicationFiled: August 22, 2008Publication date: March 5, 2009Applicant: CANON KABUSHIKI KAISHAInventors: HIROKO TAKADA, HISANOBU AZUMA, JUN IBA
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Publication number: 20090009438Abstract: 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: ApplicationFiled: June 30, 2008Publication date: January 8, 2009Applicant: CANON KABUSHIKI KAISHAInventors: IZUMI KANAI, Hisanobu Azuma
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Publication number: 20080309592Abstract: 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: ApplicationFiled: May 29, 2008Publication date: December 18, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Yasuo Ohashi, Hisanobu Azuma, Jun Iba
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Patent number: 7432884Abstract: 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: GrantFiled: March 9, 2006Date of Patent: October 7, 2008Assignee: Canon Kabushiki KaishaInventors: Izumi Kanai, Hisanobu Azuma
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Publication number: 20080238287Abstract: 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: ApplicationFiled: March 24, 2008Publication date: October 2, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Jun Iba, Hisanobu Azuma
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Publication number: 20080238288Abstract: 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: ApplicationFiled: March 20, 2008Publication date: October 2, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Jun Iba, Hisanobu Azuma
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Patent number: 7427826Abstract: 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: GrantFiled: January 13, 2006Date of Patent: September 23, 2008Assignee: Canon Kabushiki KaishaInventors: Jun Iba, Yasuo Ohashi, Hisanobu Azuma, Takahiro Hachisu, Masanori Takahashi
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Patent number: 7427830Abstract: 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: GrantFiled: October 20, 2005Date of Patent: September 23, 2008Assignee: Canon Kabushiki KaishaInventors: Hirotomo Taniguchi, Hisanobu Azuma
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Patent number: 7382088Abstract: 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: GrantFiled: August 11, 2006Date of Patent: June 3, 2008Assignee: Canon Kabushiki KaishaInventors: Hisanobu Azuma, Jun Iba, Yasuo Ohashi
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Patent number: 7381578Abstract: 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: GrantFiled: September 28, 2006Date of Patent: June 3, 2008Assignee: Canon Kabushiki KaishaInventor: Hisanobu Azuma
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Publication number: 20070046173Abstract: 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: ApplicationFiled: August 11, 2006Publication date: March 1, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Hisanobu Azuma, Jun Iba, Yasuo Ohashi
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Publication number: 20070020787Abstract: 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: ApplicationFiled: September 28, 2006Publication date: January 25, 2007Inventor: HISANOBU AZUMA
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Patent number: 7151005Abstract: 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: GrantFiled: August 3, 2005Date of Patent: December 19, 2006Assignee: Canon Kabushiki KaishaInventor: Hisanobu Azuma
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Publication number: 20060192493Abstract: 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: ApplicationFiled: March 9, 2006Publication date: August 31, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Izumi Kanai, Hisanobu Azuma
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Publication number: 20060164001Abstract: 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: ApplicationFiled: January 13, 2006Publication date: July 27, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Jun Iba, Yasuo Ohashi, Hisanobu Azuma, Takahiro Hachisu, Masanori Takahashi
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Patent number: 7046219Abstract: 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: GrantFiled: June 18, 2004Date of Patent: May 16, 2006Assignee: Canon Kabushiki KaishaInventors: Izumi Kanai, Hisanobu Azuma
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Publication number: 20060087220Abstract: 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: ApplicationFiled: October 20, 2005Publication date: April 27, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Tamayo Hiroki, Hisanobu Azuma, Hirotomo Taniguchi