Patents by Inventor Masaaki Ofuji
Masaaki Ofuji 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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Patent number: 10976601Abstract: A video display device includes: a display panel that displays an image based on an input image signal; a light source substrate that includes a plurality of light sources on a main surface which is a front side of the light source substrate, and emits, toward a rear side of the display panel, light emitted from the plurality of light sources; a reflection sheet that is provided on the main surface of the light source substrate, and in which hollow partitioning walls each of which separates adjacent two light sources of the plurality of light sources are formed; and an optical member that has a plate shape, is provided between the display panel and the light source substrate, and uniformizes luminance distribution of the light emitted from the light source substrate. The reflection sheet extends to an outside of an outer peripheral edge of the optical member as viewed from the front side.Type: GrantFiled: August 30, 2016Date of Patent: April 13, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yasuhiro Kumamoto, Takeichi Shinya, Koujirou Higa, Masaaki Ofuji, Taizou Takeuchi, Tadahiro Kugimaru
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Patent number: 10809569Abstract: A video display device includes: a display panel that displays an image based on an input image signal; a light source substrate that includes a plurality of light sources on a main surface which is a front side of the light source substrate, and emits, toward a rear side of the display panel, light emitted from the plurality of light sources; a reflection sheet that is provided on the main surface of the light source substrate, and in which hollow partitioning walls each of which separates adjacent two light sources of the plurality of light sources are formed; an optical member that is provided between the display panel and the light source substrate, and uniformizes luminance distribution of the light emitted from the light source substrate; and support members each of which is provided between the light source substrate and the optical member, and supports the optical member.Type: GrantFiled: August 30, 2016Date of Patent: October 20, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yasuhiro Kumamoto, Takeichi Shinya, Koujirou Higa, Masaaki Ofuji, Taizou Takeuchi, Tadahiro Kugimaru
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Patent number: 10663793Abstract: A video display device includes a liquid crystal display panel, and light source substrates configured to illuminate the liquid crystal display panel from a rear side of the liquid crystal display panel. Each of the light source substrates includes a plurality of light emitting diodes each of which is provided in corresponding one of areas different from each other in the liquid crystal display panel, and driver elements which drive each of the plurality of light emitting diodes such that light is emitted with luminance corresponding to brightness within a corresponding area of an image in accordance with a control signal. First conductive foil is disposed on a first main surface of the light source substrate on which the light emitting diodes are provided. Second conductive foil is disposed on a second main surface of the light source substrate on a side opposite to the first main surface.Type: GrantFiled: August 30, 2016Date of Patent: May 26, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yasuhiro Kumamoto, Takeichi Shinya, Koujirou Higa, Masaaki Ofuji, Taizou Takeuchi, Tadahiro Kugimaru, Ryou Shimotaya
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Patent number: 10643556Abstract: A video display device includes: a display panel that displays an image based on an image signal; a light source substrate disposed on a rear side of the display panel; a plurality of light emitting elements each of which is attached to a surface of the light source substrate on a side toward the display panel to emit light to the display panel; a reflection sheet; and driver elements that drive each of the plurality of light emitting elements. Partitioning wall portions are formed in the reflection sheet, each of partitioning wall portions separates adjacent ones of the light emitting elements, and expands toward the display panel. The reflection sheet covers the surface of the light source substrate on the side toward the display panel except for portions provided with the light emitting elements. Each of the driver elements is attached to the surface of the light source substrate on the side toward the display panel in a portion surrounded by the corresponding partitioning wall portions.Type: GrantFiled: August 30, 2016Date of Patent: May 5, 2020Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Yasuhiro Kumamoto, Takeichi Shinya, Koujirou Higa, Masaaki Ofuji, Taizou Takeuchi, Takahiro Kugimaru
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Patent number: 10642097Abstract: A video display device includes a liquid crystal display panel, and a plurality of light source substrates configured to illuminate the liquid crystal display panel from a rear side of the liquid crystal display panel. Each of the plurality of light source substrates includes a signal input connector that receives a control signal, a plurality of light emitting diodes each of which is provided in correspondence with a corresponding one of areas different from each other in the liquid crystal display panel, a driver element that drives each of the plurality of light emitting diodes in accordance with the control signal such that each of the plurality of light emitting diodes emits light with luminance corresponding to brightness of the corresponding area of an image, and a signal output connector that through-outputs the control signal.Type: GrantFiled: August 30, 2016Date of Patent: May 5, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yasuhiro Kumamoto, Takeichi Shinya, Koujirou Higa, Masaaki Ofuji, Taizou Takeuchi, Tadahiro Kugimaru
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Patent number: 10490143Abstract: A video display device includes a display panel that displays an image based on an image signal, and a light source substrate disposed on a rear side of the display panel. The light source substrate includes a plurality of light emitting elements disposed on a surface of the light source substrate on a side toward the display panel, and a plurality of driver elements that are disposed on the same surface of the light source substrate as the surface to which the plurality of light emitting elements are attached, and drive each of the plurality of light emitting elements.Type: GrantFiled: August 30, 2016Date of Patent: November 26, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yasuhiro Kumamoto, Takeichi Shinya, Koujirou Higa, Masaaki Ofuji, Taizou Takeuchi, Tadahiro Kugimaru
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Publication number: 20180252966Abstract: A video display device includes a liquid crystal display panel, and light source substrates configured to illuminate the liquid crystal display panel from a rear side of the liquid crystal display panel. Each of the light source substrates includes a plurality of light emitting diodes each of which is provided in corresponding one of areas different from each other in the liquid crystal display panel, and driver elements which drive each of the plurality of light emitting diodes such that light is emitted with luminance corresponding to brightness within a corresponding area of an image in accordance with a control signal. First conductive foil is disposed on a first main surface of the light source substrate on which the light emitting diodes are provided. Second conductive foil is disposed on a second main surface of the light source substrate on a side opposite to the first main surface.Type: ApplicationFiled: August 30, 2016Publication date: September 6, 2018Inventors: YASUHIRO KUMAMOTO, TAKEICHI SHINYA, KOUJIROU HIGA, MASAAKI OFUJI, TAIZOU TAKEUCHI, TADAHIRO KUGIMARU, RYOU SHIMOTAYA
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Publication number: 20180240420Abstract: A video display device includes: a display panel that displays an image based on an image signal; a light source substrate disposed on a rear side of the display panel; a plurality of light emitting elements each of which is attached to a surface of the light source substrate on a side toward the display panel to emit light to the display panel; a reflection sheet; and driver elements that drive each of the plurality of light emitting elements. Partitioning wall portions are formed in the reflection sheet, each of partitioning wall portions separates adjacent ones of the light emitting elements, and expands toward the display panel. The reflection sheet covers the surface of the light source substrate on the side toward the display panel except for portions provided with the light emitting elements. Each of the driver elements is attached to the surface of the light source substrate on the side toward the display panel in a portion surrounded by the corresponding partitioning wall portions.Type: ApplicationFiled: August 30, 2016Publication date: August 23, 2018Inventors: YASUHIRO KUMAMOTO, TAKEICHI SHINYA, KOUJIROU HIGA, MASAAKI OFUJI, TAIZOU TAKEUCHI, TADAHIRO KUGIMARU
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Publication number: 20180239195Abstract: A video display device includes: a display panel that displays an image based on an input image signal; a light source substrate that includes a plurality of light sources on a main surface which is a front side of the light source substrate, and emits, toward a rear side of the display panel, light emitted from the plurality of light sources; a reflection sheet that is provided on the main surface of the light source substrate, and in which hollow partitioning walls each of which separates adjacent two light sources of the plurality of light sources are formed; an optical member that is provided between the display panel and the light source substrate, and uniformizes luminance distribution of the light emitted from the light source substrate; and support members each of which is provided between the light source substrate and the optical member, and supports the optical member.Type: ApplicationFiled: August 30, 2016Publication date: August 23, 2018Inventors: YASUHIRO KUMAMOTO, TAKEICHI SHINYA, KOUJIROU HIGA, MASAAKI OFUJI, TAIZOU TAKEUCHI, TADAHIRO KUGIMARU
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Publication number: 20180231838Abstract: A video display device includes a liquid crystal display panel, and a plurality of light source substrates configured to illuminate the liquid crystal display panel from a rear side of the liquid crystal display panel. Each of the plurality of light source substrates includes a signal input connector that receives a control signal, a plurality of light emitting diodes each of which is provided in correspondence with a corresponding one of areas different from each other in the liquid crystal display panel, a driver element that drives each of the plurality of light emitting diodes in accordance with the control signal such that each of the plurality of light emitting diodes emits light with luminance corresponding to brightness of the corresponding area of an image, and a signal output connector that through-outputs the control signal.Type: ApplicationFiled: August 30, 2016Publication date: August 16, 2018Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: YASUHIRO KUMAMOTO, TAKEICHI SHINYA, KOUJIROU HIGA, MASAAKI OFUJI, TAIZOU TAKEUCHI, TADAHIRO KUGIMARU
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Publication number: 20180233094Abstract: A video display device includes a display panel that displays an image based on an image signal, and a light source substrate disposed on a rear side of the display panel. The light source substrate includes a plurality of light emitting elements disposed on a surface of the light source substrate on a side toward the display panel, and a plurality of driver elements that are disposed on the same surface of the light source substrate as the surface to which the plurality of light emitting elements are attached, and drive each of the plurality of light emitting elements.Type: ApplicationFiled: August 30, 2016Publication date: August 16, 2018Inventors: Yasuhiro KUMAMOTO, Takeichi SHINYA, Koujirou HIGA, Masaaki OFUJI, Taizou TAKEUCHI, Tadahiro KUGIMARU
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Publication number: 20180196312Abstract: A video display device includes: a display panel that displays an image based on an input image signal; a light source substrate that includes a plurality of light sources on a main surface which is a front side of the light source substrate, and emits, toward a rear side of the display panel, light emitted from the plurality of light sources; a reflection sheet that is provided on the main surface of the light source substrate, and in which hollow partitioning walls each of which separates adjacent two light sources of the plurality of light sources are formed; and an optical member that has a plate shape, is provided between the display panel and the light source substrate, and uniformizes luminance distribution of the light emitted from the light source substrate. The reflection sheet extends to an outside of an outer peripheral edge of the optical member as viewed from the front side.Type: ApplicationFiled: August 30, 2016Publication date: July 12, 2018Inventors: YASUHIRO KUMAMOTO, TAKEICHI SHINYA, KOUJIROU HIGA, MASAAKI OFUJI, TAIZOU TAKEUCHI, TADAHIRO KUGIMARU
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Publication number: 20150124382Abstract: A display device includes: a display panel for displaying images; a transparent protective member for protecting a display surface of the display panel; an adhesive layer that is disposed between the display panel and the transparent protective member so as to bond the display panel and the transparent protective member together; and an adjacent layer that is disposed adjacent to the adhesive layer and between the display panel and the adhesive layer or between the transparent protective member and the adhesive layer. The outer boundary of the adhesive layer lies beyond the outer boundary of the adjacent layer, as viewed from the front of the display surface of the display panel.Type: ApplicationFiled: June 14, 2012Publication date: May 7, 2015Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Akira Taniguchi, Masaaki Ofuji, Eiichi Uriu, Kenji Hasegawa
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Patent number: 8014169Abstract: The present invention provides a shield structure for an electronic device allowing conductive members to be connected electrically to each other at low impedance while preventing the leakage of electromagnetic waves effectively. The first conductive member and the second conductive member for enclosing the electronic device respectively have laid portions that are laid one on the other and fastened to each other at plural positions by means of screw members. Through-holes into which the screw members are to be inserted are formed on both of the laid portions. Protruding portions, which protrude toward the laid portion of the second conductive member, each are formed between the adjacent through-holes on the laid portion of the first conductive member. The protruding portions each have a shape extending in the direction connecting the adjacent through-holes and bulging from both ends toward the center thereof in a smooth curve.Type: GrantFiled: December 3, 2008Date of Patent: September 6, 2011Assignee: Panasonic CorporationInventors: Seiji Hamada, Masaaki Ofuji, Takatoshi Kubiura, Ichiro Hirose, Hirotsugu Fusayasu, Ryo Matsubara, Kei Ichikawa, Hiroshi Kunimoto
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Patent number: 7940006Abstract: A plasma display device includes: a plasma display panel; a front glass; a conductive filter attached to a front surface or a back surface of the front glass; a back cover; and a plurality of glass pressing pieces each of which presses a corresponding one of four sides of the front glass and makes the conductive filter and the back cover be connected electrically. Among the plurality of glass pressing pieces, glass pressing pieces disposed on one pair of opposite sides of the front glass are electrically connected with the conductive filter at the front surface side thereof, and glass pressing pieces disposed on the other pair of opposite sides of the front glass are electrically connected with the conductive filter at the back surface side thereof.Type: GrantFiled: January 21, 2009Date of Patent: May 10, 2011Assignee: Panasonic CorporationInventors: Kei Ichikawa, Masaaki Ofuji, Seiji Hamada
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Publication number: 20090189525Abstract: A plasma display device includes: a plasma display panel; a front glass; a conductive filter attached to a front surface or a back surface of the front glass; a back cover; and a plurality of glass pressing pieces each of which presses a corresponding one of four sides of the front glass and makes the conductive filter and the back cover be connected electrically. Among the plurality of glass pressing pieces, glass pressing pieces disposed on one pair of opposite sides of the front glass are electrically connected with the conductive filter at the front surface side thereof, and glass pressing pieces disposed on the other pair of opposite sides of the front glass are electrically connected with the conductive filter at the back surface side thereof.Type: ApplicationFiled: January 21, 2009Publication date: July 30, 2009Applicant: PANASONIC CORPORATIONInventors: Kei ICHIKAWA, Masaaki OFUJI, Seiji HAMADA
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Patent number: 7559163Abstract: A display device includes a display part made of a roll-up sheet-like direct-view display element; a take-up part attached on one end of the display part, the take-up part allowing the display part to be rolled up; a pulling part attached on the other end of the display part, the pulling part allowing the display part to be roll out; and a holding part for holding the display part from behind. The holding part is formed of linkage, which can be stored on the rear surface of the display part when the display part is rolled up, and can be stretched across the rear surface of the display part when the display part is rolled out. This enables the holding part to be stretched across the rear surface of the display part when the display part is spread out so as to prevent the display part from swaying, thereby maintaining excellent display.Type: GrantFiled: February 23, 2005Date of Patent: July 14, 2009Assignee: Panasonic CorporationInventors: Masaaki Ofuji, Naoya Taki
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Publication number: 20090141470Abstract: The present invention provides a shield structure for an electronic device allowing conductive members to be connected electrically to each other at low impedance while preventing the leakage of electromagnetic waves effectively. The first conductive member and the second conductive member for enclosing the electronic device respectively have laid portions that are laid one on the other and fastened to each other at plural positions by means of screw members. Through-holes into which the screw members are to be inserted are formed on both of the laid portions. Protruding portions, which protrude toward the laid portion of the second conductive member, each are formed between the adjacent through-holes on the laid portion of the first conductive member. The protruding portions each have a shape extending in the direction connecting the adjacent through-holes and bulging from both ends toward the center thereof in a smooth curve.Type: ApplicationFiled: December 3, 2008Publication date: June 4, 2009Applicant: PANASONIC CORPORATIONInventors: Seiji HAMADA, Masaaki OFUJI, Takatoshi KUBIURA, Ichiro HIROSE, Hirotsugu FUSAYASU, Ryo MATSUBARA, Kei ICHIKAWA, Hiroshi KUNIMOTO
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Publication number: 20070180745Abstract: A display device includes a display part made of a roll-up sheet-like direct-view display element; a take-up part attached on one end of the display part, the take-up part allowing the display part to be rolled up; a pulling part attached on the other end of the display part, the pulling part allowing the display part to be roll out; and a holding part for holding the display part from behind. The holding part is formed of linkage, which can be stored on the rear surface of the display part when the display part is rolled up, and can be stretched across the rear surface of the display part when the display part is rolled out. This enables the holding part to be stretched across the rear surface of the display part when the display part is spread out so as to prevent the display part from swaying, thereby maintaining excellent display.Type: ApplicationFiled: February 23, 2005Publication date: August 9, 2007Inventors: Masaaki Ofuji, Naoya Taki