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: 20170012189Abstract: A light emitting device (10) includes light emitting elements (12), conductor wirings (14), and alignment marks (18) formed on a substrate (11). The alignment marks (18) and the conductor wirings (14) are formed by printing.Type: ApplicationFiled: September 21, 2016Publication date: January 12, 2017Inventors: Toshio HATA, Makoto AGATANI, Shinya ISHIZAKI, Makoto MATSUDA, Tomokazu NADA, Toyonori UEMURA
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Publication number: 20160353544Abstract: Provided is a light-emitting device that is capable of adjusting color temperature through the supply of electric power from a single power supply. The light-emitting device includes an anode electrode land, a cathode electrode land, and first and second wires through which the anode electrode land and the cathode electrode land are connected to each other. The first wire is higher in electric resistance than the second wire. The color temperature of light that is emitted by a whole light-emitting unit including a first light-emitting unit electrically connected to the first wire and a second light-emitting unit electrically connected to the second wire is adjustable.Type: ApplicationFiled: January 7, 2015Publication date: December 1, 2016Inventors: Nobumasa KANEKO, Tomokazu NADA, Makoto AGATANI, Toshio HATA, Osamu JINUSHI, Yoshiki SOTA, Naveen Venkata Rama DEVISETTI, Kazuaki KANEKO, Hiroaki ONUMA
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Patent number: 9490236Abstract: 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: GrantFiled: October 14, 2015Date of Patent: November 8, 2016Assignee: SHARP KABUSHIKI KAISHAInventors: Makoto Agatani, Toshio Hata, Tomokazu Nada, Shinya Ishizaki
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Patent number: 9484309Abstract: A light emitting device (10) includes light emitting elements (12), conductor wirings (14), and alignment marks (18) formed on a substrate (11). The alignment marks (18) and the conductor wirings (14) are formed by printing.Type: GrantFiled: July 11, 2013Date of Patent: November 1, 2016Assignee: SHARP KABUSHIKI KAISHAInventors: Toshio Hata, Makoto Agatani, Shinya Ishizaki, Makoto Matsuda, Tomokazu Nada, Toyonori Uemura
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Publication number: 20160300882Abstract: 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: June 21, 2016Publication date: October 13, 2016Inventors: Shinya ISHIZAKI, Makoto AGATANI, Tomokazu NADA, Toshio HATA
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Patent number: 9425236Abstract: 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: March 31, 2015Date of Patent: August 23, 2016Assignee: Sharp Kabushiki KaishaInventors: Shinya Ishizaki, Makoto Agatani, Tomokazu Nada, Toshio Hata
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Publication number: 20160149094Abstract: In a light-source device (10) of this invention, integrated light emission intensity from 460 nm to 500 nm is higher than integrated light emission intensity from 415 nm to 460 nm in an emission spectrum of white light. This allows provision of a light-source device which emits white light easy on a human eye.Type: ApplicationFiled: June 16, 2014Publication date: May 26, 2016Applicant: Sharp Kabushiki KaishaInventors: Hiroaki ONUMA, Tomokazu NADA, Yuta HOMMA, Toshio HATA
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Patent number: 9312304Abstract: 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: February 20, 2015Date of Patent: April 12, 2016Assignee: Sharp Kabushiki KaishaInventors: Shinya Ishizaki, Makoto Agatani, Tomokazu Nada, Toshio Hata
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Publication number: 20160035710Abstract: 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 14, 2015Publication date: February 4, 2016Inventors: Makoto AGATANI, Toshio HATA, Tomokazu NADA, Shinya ISHIZAKI
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Patent number: 9243791Abstract: 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: GrantFiled: April 2, 2014Date of Patent: January 26, 2016Assignee: SHARP KABUSHIKI KAISHAInventors: Makoto Agatani, Toshio Hata, Tomokazu Nada, Shinya Ishizaki
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Patent number: 9188321Abstract: 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: GrantFiled: October 22, 2014Date of Patent: November 17, 2015Assignee: SHARP KABUSHIKI KAISHAInventors: Makoto Agatani, Toshio Hata, Tomokazu Nada, Shinya Ishizaki
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Publication number: 20150276198Abstract: A light-emitting apparatus has a substrate (72) having a generally disc shape, a light-emitting part (76) having a plurality of LED chips (73) mounted on one main surface of the substrate (72), the plurality of LED chips (73) being sealed with a resin (74), and a heat-sink attachment part having a heat-sink attachment male thread (80) formed on a side surface of the substrate (72). When the attachment area of the substrate (72) to the heat sink is kept the same, the light-emitting part (76) may be enlarged, and when the light-emitting unit (76) is kept the same, the attachment area of the substrate (72) may be reduced.Type: ApplicationFiled: October 10, 2013Publication date: October 1, 2015Applicant: SHARP KABUSHIKI KAISHAInventors: Toshio Hata, Makoto Agatani, Tomokazu Nada, Yuhsuke Fujita, Ippei Yamaguchi, Masahiro Konishi
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Patent number: 9093357Abstract: 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: March 18, 2014Date of Patent: July 28, 2015Assignee: Sharp Kabushiki KaishaInventors: Shinya Ishizaki, Makoto Agatani, Tomokazu Nada, Toshio Hata
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Publication number: 20150207048Abstract: 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 31, 2015Publication date: July 23, 2015Inventors: Shinya ISHIZAKI, Makoto AGATANI, Tomokazu NADA, Toshio HATA
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Publication number: 20150192281Abstract: The light emission device (1a) includes an insulating substrate (2) and a light-emitting section (5) which is provided on a main surface of the insulating substrate (2) and has an LED chip (3) and a wiring pattern (4). In an edge area of the main surface of the insulating substrate (2), a wall pattern (7a) made of an insulating material is provided so as to surround the light-emitting section (5).Type: ApplicationFiled: June 10, 2013Publication date: July 9, 2015Inventors: Yuta Homma, Makoto Agatani, Toshio Hata, Tomokazu Nada
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Publication number: 20150171294Abstract: A light emitting device (10) includes light emitting elements (12), conductor wirings (14), and alignment marks (18) formed on a substrate (11). The alignment marks (18) and the conductor wirings (14) are formed by printing.Type: ApplicationFiled: July 11, 2013Publication date: June 18, 2015Inventors: Toshio Hata, Makoto Agatani, Shinya Ishizaki, Makoto Matsuda, Tomokazu Nada, Toyonori Uemura
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Publication number: 20150171141Abstract: 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: February 20, 2015Publication date: June 18, 2015Inventors: Shinya ISHIZAKI, Makoto AGATANI, Tomokazu NADA, Toshio HATA
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Publication number: 20150117020Abstract: A light source device is obtained, which has an enhanced light distribution characteristic with sufficiently homogeneous diffused light and can be readily manufactured with a simple configuration. The light source device has a substrate 2, a board-like first reflector 3 erected vertically to traverse a center section on the substrate 2 while both side surfaces face outward, and a plurality of LED chips 4 positioned on the substrate 2 as a plurality of light emitting elements so as to surround the first reflector 3. At least both side surfaces of the first reflector 3 have a light reflecting function. Thereby, a light source device is obtained, which has an enhanced light distribution characteristic with sufficiently homogeneous diffused light and can be readily manufactured with a simple configuration.Type: ApplicationFiled: April 26, 2013Publication date: April 30, 2015Inventors: Toshio Hata, Makoto Agatani, Tomokazu Nada
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Patent number: 9018832Abstract: 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: GrantFiled: September 23, 2011Date of Patent: April 28, 2015Assignee: Sharp Kabushiki KaishaInventors: Makoto Agatani, Toshio Hata, Tomokazu Nada, Shinya Ishizaki
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Patent number: 8985793Abstract: 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: GrantFiled: June 27, 2011Date of Patent: March 24, 2015Assignee: 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