Patents by Inventor Tomokazu Nada
Tomokazu Nada 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: 20150041835Abstract: A light-emitting device capable of ensuring an electric connection between a light-emitting element and an electrode without generating any problem in practical use, by both connecting methods with a solder and a connector, and a lighting device provided with the light-emitting device are provided. The light-emitting device according to the present invention has a plurality of LED chips, and a soldering electrode land and a connector connecting electrode land electrically connected to the chips, on a ceramic substrate. The soldering electrode land is formed of a first conductive material having a function to prevent diffusion to a solder, and the connector connecting electrode land is formed of a second conductive material having a function to prevent oxidation.Type: ApplicationFiled: October 22, 2014Publication date: February 12, 2015Inventors: Makoto AGATANI, Toshio Hata, Tomokazu Nada, Shinya Ishizaki
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Publication number: 20140268783Abstract: A light-emitting device capable of ensuring an electric connection between a light-emitting element and an electrode without generating any problem in practical use, by both connecting methods with a solder and a connector, and a lighting device provided with the light-emitting device are provided. The light-emitting device according to the present invention has a plurality of LED chips, and a soldering electrode land and a connector connecting electrode land electrically connected to the chips, on a ceramic substrate. The soldering electrode land is formed of a first conductive material having a function to prevent diffusion to a solder, and the connector connecting electrode land is formed of a second conductive material having a function to prevent oxidation.Type: ApplicationFiled: April 2, 2014Publication date: September 18, 2014Applicant: Sharp Kabushiki KaishaInventors: Makoto AGATANI, Toshio HATA, Tomokazu NADA, Shinya ISHIZAKI
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Patent number: 8827495Abstract: The light-emitting device includes: a substrate which has a single layer structure in which a conductive member is partially provided on a surface of the substrate; a plurality of light-emitting elements which are directly provided on the surface of the substrate so as to be electrically connected with the conductive member; a first light reflection resin layer; a second light reflection resin layer which is provided in a looped shape on the surface of the substrate so as to surround an area in which the plurality of light-emitting elements are provided; and a sealing resin which covers the plurality of light-emitting elements.Type: GrantFiled: December 18, 2013Date of Patent: September 9, 2014Assignee: Sharp Kabushiki KaishaInventors: Shinya Ishizaki, Tomokazu Nada, Makoto Agatani, Makoto Matsuda, Shinji Osaki, Tatsuya Morioka, Hitoshi Matsushita, Toyonori Uemura, Toshio Hata
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Publication number: 20140197433Abstract: A light emitting device includes: a ceramic substrate; a plurality of LED chips; a printed resistor(s) connected in parallel with the plurality of LED chips; a dam resin made of a resin having a low optical transmittance; a fluorescent-material-containing resin layer; and an anode-side electrode and a cathode-side electrode, (a) which are provided on a primary surface of the ceramic substrate so as to face each other along a first direction on the primary surface and (b) which are disposed below at least one of the dam resin and the fluorescent-material-containing resin layer. With the configuration in which a plurality of LEDs, which are connected in a series-parallel connection, are provided on a substrate, it is possible to provide a light emitting device which can achieve restraining of luminance unevenness and an improvement in luminous efficiency.Type: ApplicationFiled: March 18, 2014Publication date: July 17, 2014Applicant: Sharp Kabushiki KaishaInventors: Shinya ISHIZAKI, Makoto AGATANI, Tomokazu NADA, Toshio HATA
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Patent number: 8735914Abstract: A light emitting device is a light emitting device using light emitting elements and includes: a substrate; a resin frame provided circularly on the substrate; a resin wall provided on the substrate so as to partition an area surrounded by the resin frame into 2 zones; light-emitting sections (a first light-emitting section: blue LEDs+red fluorescent material, a second light-emitting section: blue LEDs+yellow fluorescent material) provided in the respective zones, each of which light-emitting sections includes at least one light emitting element; and first and second anode electrodes and a cathode electrode provided so that each of the light-emitting sections receives current via a corresponding anode electrode and the cathode electrode, the light-emitting sections emitting respective pieces of light each having at least one color, which respective pieces of light have different colors from each other, the first and second anode electrodes being electrically connected to the first and second light-emitting seType: GrantFiled: May 16, 2011Date of Patent: May 27, 2014Assignee: Sharp Kabushiki KaishaInventors: Makoto Agatani, Toshio Hata, Tomokazu Nada, Toyonori Uemura, Shinya Ishizaki
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Patent number: 8723195Abstract: A light emitting device includes a substrate having a rectangular outer shape in a top view, a plurality of LED chips, a resin frame formed on the primary surface of the substrate and provided annularly so as to surround a mounting area in which the LED chips are provided, an anode-side electrode land and a cathode-side electrode land which are electrodes to be connected to an external voltage supply of said light emitting device. An electrode wiring pattern may be formed on the primary surface of the substrate including (i) an anode line extending from the anode-side electrode land to a portion under the resin frame and (ii) a cathode line extending from the cathode-side electrode land to the other portion under the resin frame.Type: GrantFiled: March 13, 2013Date of Patent: May 13, 2014Assignee: Sharp Kabushiki KaishaInventors: Shinya Ishizaki, Makoto Agatani, Tomokazu Nada, Toshio Hata
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Publication number: 20140103797Abstract: The light-emitting device includes: a substrate which has a single layer structure in which a conductive member is partially provided on a surface of the substrate; a plurality of light-emitting elements which are directly provided on the surface of the substrate so as to be electrically connected with the conductive member; a first light reflection resin layer; a second light reflection resin layer which is provided in a looped shape on the surface of the substrate so as to surround an area in which the plurality of light-emitting elements are provided; and a sealing resin which covers the plurality of light-emitting elements.Type: ApplicationFiled: December 18, 2013Publication date: April 17, 2014Applicant: SHARP KABUSHIKI KAISHIInventors: Shinya ISHIZAKI, Tomokazu NADA, Makoto AGATANI, Makoto MATSUDA, Shinji OSAKI, Tatsuya MORIOKA, Hitoshi MATSUSHITA, Toyonori UEMURA, Toshio HATA
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Patent number: 8651696Abstract: The light-emitting device includes: a substrate which has a single layer structure in which a conductive member is partially provided on a surface of the substrate; a plurality of light-emitting elements which are directly provided on the surface of the substrate so as to be electrically connected with the conductive member; a first light reflection resin layer; a second light reflection resin layer which is provided in a looped shape on the surface of the substrate so as to surround an area in which the plurality of light-emitting elements are provided; and a sealing resin which covers the plurality of light-emitting elements.Type: GrantFiled: June 3, 2011Date of Patent: February 18, 2014Assignee: Sharp Kabushiki KaishaInventors: Shinya Ishizaki, Tomokazu Nada, Makoto Agatani, Makoto Matsuda, Shinji Osaki, Tatsuya Morioka, Hitoshi Matsushita, Toyonori Uemura, Toshio Hata
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Publication number: 20130264934Abstract: A substrate-type LED light source (10) includes: at least one blue LED chip (2) which has an emission peak in a range from 400 nm to 480 nm so as to correspond to a blue light region absorption peak of chlorophyll; a red phosphor (7b) which emit, upon receiving excitation light from the at least one blue LED chip (2), light having a peak wavelength in a range from 620 nm to 700 nm so as to correspond to a red light region absorption peak of chlorophyll; and a resin layer (7) in which the red phosphor 7b is dispersed and which covers the at least one blue LED chip (2).Type: ApplicationFiled: November 15, 2011Publication date: October 10, 2013Inventors: Shinji Osaki, Toyonori Uemura, Toshio Hata, Tomokazu Nada, Tatsuya Morioka, Makoto Matsuda, Shinya Ishizaki, Makoto Agatani, Hitoshi Matsushita
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Publication number: 20130128493Abstract: An illumination device with a toning function in which possibility of moisture and dust intruding into the case is reduced with a simple mechanism is realized.Type: ApplicationFiled: June 27, 2011Publication date: May 23, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Shinji Osaki, Toyonori Uemura, Toshio Hata, Junichi Somei, Yuji Kozuma, Kenji Hatazawa, Tomokazu Nada, Makoto Agatani, Shinya Ishizaki, Tatsuya Morioka, Makoto Matsuda
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Patent number: 8421094Abstract: A light emitting device includes: a ceramic substrate; a plurality of LED chips; a printed resistor(s) connected in parallel with the plurality of LED chips; a dam resin made of a resin having a low optical transmittance; a fluorescent-material-containing resin layer; and an anode-side electrode and a cathode-side electrode, (a) which are provided on a primary surface of the ceramic substrate so as to face each other along a first direction on the primary surface and (b) which are disposed below at least one of the dam resin and the fluorescent-material-containing resin layer. With the configuration in which a plurality of LEDs, which are connected in a series-parallel connection, are provided on a substrate, it is possible to provide a light emitting device which can achieve restraining of luminance unevenness and an improvement in luminous efficiency.Type: GrantFiled: January 21, 2011Date of Patent: April 16, 2013Assignee: Sharp Kabushiki KaishaInventors: Shinya Ishizaki, Makoto Agatani, Tomokazu Nada, Toshio Hata
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Publication number: 20120080713Abstract: A light-emitting device capable of ensuring an electric connection between a light-emitting element and an electrode without generating any problem in practical use, by both connecting methods with a solder and a connector, and a lighting device provided with the light-emitting device are provided. The light-emitting device according to the present invention has a plurality of LED chips, and a soldering electrode land and a connector connecting electrode land electrically connected to the chips, on a ceramic substrate. The soldering electrode land is formed of a first conductive material having a function to prevent diffusion to a solder, and the connector connecting electrode land is formed of a second conductive material having a function to prevent oxidation.Type: ApplicationFiled: September 23, 2011Publication date: April 5, 2012Inventors: Makoto AGATANI, Toshio HATA, Tomokazu NADA, Shinya ISHIZAKI
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Publication number: 20110299268Abstract: The light-emitting device includes: a substrate which has a single layer structure in which a conductive member is partially provided on a surface of the substrate; a plurality of light-emitting elements which are directly provided on the surface of the substrate so as to be electrically connected with the conductive member; a first light reflection resin layer; a second light reflection resin layer which is provided in a looped shape on the surface of the substrate so as to surround an area in which the plurality of light-emitting elements are provided; and a sealing resin which covers the plurality of light-emitting elements.Type: ApplicationFiled: June 3, 2011Publication date: December 8, 2011Inventors: Shinya Ishizaki, Tomokazu Nada, Makoto Agatani, Makoto Matsuda, Shinji Osaki, Tatsuya Morioka, Hitoshi Matsushita, Toyonori Uemura, Toshio Hata
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Publication number: 20110278605Abstract: A light emitting device is a light emitting device using light emitting elements and includes: a substrate; a resin frame provided circularly on the substrate; a resin wall provided on the substrate so as to partition an area surrounded by the resin frame into 2 zones; light-emitting sections (a first light-emitting section: blue LEDs+red fluorescent material, a second light-emitting section: blue LEDs+yellow fluorescent material) provided in the respective zones, each of which light-emitting sections includes at least one light emitting element; and first and second anode electrodes and a cathode electrode provided so that each of the light-emitting sections receives current via a corresponding anode electrode and the cathode electrode, the light-emitting sections emitting respective pieces of light each having at least one color, which respective pieces of light have different colors from each other, the first and second anode electrodes being electrically connected to the first and second light-emitting seType: ApplicationFiled: May 16, 2011Publication date: November 17, 2011Applicant: SHARP KABUSHIKI KAISHAInventors: Makoto AGATANI, Toshio Hata, Tomokazu Nada, Toyonori Uemura, Shinya Ishizaki
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Publication number: 20110180817Abstract: A light emitting device includes: a ceramic substrate; a plurality of LED chips; a printed resistor(s) connected in parallel with the plurality of LED chips; a dam resin made of a resin having a low optical transmittance; a fluorescent-material-containing resin layer; and an anode-side electrode and a cathode-side electrode, (a) which are provided on a primary surface of the ceramic substrate so as to face each other along a first direction on the primary surface and (b) which are disposed below at least one of the dam resin and the fluorescent-material-containing resin layer. With the configuration in which a plurality of LEDs, which are connected in a series-parallel connection, are provided on a substrate, it is possible to provide a light emitting device which can achieve restraining of luminance unevenness and an improvement in luminous efficiency.Type: ApplicationFiled: January 21, 2011Publication date: July 28, 2011Applicant: SHARP KABUSHIKI KAISHAInventors: Shinya ISHIZAKI, Makoto Agatani, Tomokazu Nada, Toshio Hata