Patents by Inventor Koji Hiramoto
Koji Hiramoto 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: 11768325Abstract: Display device is provided and includes display panel; and illumination device provided on rear surface side of display panel, wherein illumination device includes light sources, and light guiding member arranged at rear surface side of display panel, light guiding member has holes which penetrates the light guiding member, light sources are housed in corresponding hole, rear surface of light guiding member has first inclined surface inclined upwardly from light source housed in one of holes, front surface side of light guiding member has second inclined surface inclined upwardly from light source housed in one of the holes, and angle of first inclined surface to center line of one of holes is greater than angle of second inclined surface to center line.Type: GrantFiled: May 12, 2022Date of Patent: September 26, 2023Assignee: Japan Display Inc.Inventors: Koji Hiramoto, Masafumi Okada, Hiroshi Nakamoto, Ken Kagabu, Ken Sugiyama
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Patent number: 11567354Abstract: According to an embodiment, a display device comprises a frame defining an opening, a grip extending from the frame, and a display panel which is held by the frame and whose background is visually recognizable. Further, the opening includes a region surrounded by an inner edge of the frame and the display panel.Type: GrantFiled: July 8, 2021Date of Patent: January 31, 2023Assignee: Japan Display Inc.Inventors: Koji Hiramoto, Norika Ikeda, Ken Sugiyama
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Patent number: 11460738Abstract: A display device is provided and includes a display panel comprising a substrate; a case provided on a back side of the substrate, the case having an outer surface; and a flexible wiring board, one end of which is connected to a top surface of the substrate, curved along the outer surface of the case; wherein the flexible wiring board is fixed to a side surface of the substrate and the outer surface of the case with an adhesive.Type: GrantFiled: November 25, 2020Date of Patent: October 4, 2022Assignee: Japan Display Inc.Inventors: Tomoya Tezen, Ken Sugiyama, Kosuke Matsubara, Koji Hiramoto, Takeshi Kaneki
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Patent number: 11428998Abstract: A display device is provided and includes display panel; case provided at back surface of display panel; and flexible wiring board including first end connected to display panel and curved along outer surface of case, flexible wiring board comprising sheet-shaped substrate having first surface that is flat and second surface opposite to first surface, conductive layer formed on first surface of substrate and constituting wires, and protective layer overlaid on conductive layer and substrate, and substrate comprising first portion including first end joined to display panel, second portion including second end opposite to first end, and third portion provided between first portion and second portion, thickness of part of third portion is smaller than thickness of first portion and thickness of second portion, flexible wiring board is curved at third portion.Type: GrantFiled: December 28, 2020Date of Patent: August 30, 2022Assignee: Japan Display Inc.Inventors: Koji Hiramoto, Ken Sugiyama, Kosuke Matsubara, Tomoya Tezen
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Publication number: 20220268986Abstract: Display device is provided and includes display panel; and illumination device provided on rear surface side of display panel, wherein illumination device includes light sources, and light guiding member arranged at rear surface side of display panel, light guiding member has holes which penetrates the light guiding member, light sources are housed in corresponding hole, rear surface of light guiding member has first inclined surface inclined upwardly from light source housed in one of holes, front surface side of light guiding member has second inclined surface inclined upwardly from light source housed in one of the holes, and angle of first inclined surface to center line of one of holes is greater than angle of second inclined surface to center line.Type: ApplicationFiled: May 12, 2022Publication date: August 25, 2022Inventors: Koji HIRAMOTO, Masafumi OKADA, Hiroshi NAKAMOTO, Ken KAGABU, Ken SUGIYAMA
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Patent number: 11333818Abstract: According to an aspect, a display device includes: a display panel configured to transmit light; and an illumination device provided on a rear surface side of the display panel. The illumination device includes a plurality of light sources configured to emit light, and a light guiding member that has translucency and is arranged between the light sources on the rear surface side of the display panel. The light guiding member has a plurality of holes each of which opens in a first direction intersecting with a rear surface of the display panel and in each of which a corresponding one of the light sources is disposed, and a light guiding portion surrounding the holes. A rear surface of the light guiding portion is provided with a first inclined surface inclined with respect to the first direction and a plane orthogonal to the first direction.Type: GrantFiled: June 24, 2021Date of Patent: May 17, 2022Assignee: Japan Display Inc.Inventors: Koji Hiramoto, Masafumi Okada, Hiroshi Nakamoto, Ken Kagabu, Ken Sugiyama
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Publication number: 20210333613Abstract: According to an embodiment, a display device comprises a frame defining an opening, a grip extending from the frame, and a display panel which is held by the frame and whose background is visually recognizable. Further, the opening includes a region surrounded by an inner edge of the frame and the display panel.Type: ApplicationFiled: July 8, 2021Publication date: October 28, 2021Inventors: Koji HIRAMOTO, Norika IKEDA, Ken SUGIYAMA
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Publication number: 20210318483Abstract: According to an aspect, a display device includes: a display panel configured to transmit light; and an illumination device provided on a rear surface side of the display panel. The illumination device includes a plurality of light sources configured to emit light, and a light guiding member that has translucency and is arranged between the light sources on the rear surface side of the display panel. The light guiding member has a plurality of holes each of which opens in a first direction intersecting with a rear surface of the display panel and in each of which a corresponding one of the light sources is disposed, and a light guiding portion surrounding the holes. A rear surface of the light guiding portion is provided with a first inclined surface inclined with respect to the first direction and a plane orthogonal to the first direction.Type: ApplicationFiled: June 24, 2021Publication date: October 14, 2021Inventors: Koji HIRAMOTO, Masafumi OKADA, Hiroshi NAKAMOTO, Ken KAGABU, Ken SUGIYAMA
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Patent number: 11054570Abstract: According to one embodiment, a liquid crystal display device includes a liquid crystal panel and a backlight device. The backlight device includes a case with a bottom plate and a side plate, a light guide on the bottom plate, and a light source device. The light source device includes a wiring substrate and a light-emitting element on the wiring substrate. The wiring substrate includes a mounting portion on which the light-emitting element is mounted, a connection wiring portion on a back surface side of the bottom plate, and a joint portion which joints the mounting portion and the connection wiring portion together. The joint portion extends from an inside to an outside of the case through a gap between the side plate of the case and the liquid crystal panel.Type: GrantFiled: June 24, 2020Date of Patent: July 6, 2021Assignee: Japan Display Inc.Inventors: Kosuke Matsubara, Ken Sugiyama, Kazunari Nishita, Koji Hiramoto
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Publication number: 20210116732Abstract: A display device is provided and includes display panel; case provided at back surface of display panel; and flexible wiring board including first end connected to display panel and curved along outer surface of case, flexible wiring board comprising sheet-shaped substrate having first surface that is flat and second surface opposite to first surface, conductive layer formed on first surface of substrate and constituting wires, and protective layer overlaid on conductive layer and substrate, and substrate comprising first portion including first end joined to display panel, second portion including second end opposite to first end, and third portion provided between first portion and second portion, thickness of part of third portion is smaller than thickness of first portion and thickness of second portion, flexible wiring board is curved at third portion.Type: ApplicationFiled: December 28, 2020Publication date: April 22, 2021Inventors: Koji HIRAMOTO, Ken SUGIYAMA, Kosuke MATSUBARA, Tomoya TEZEN
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Publication number: 20210080771Abstract: A display device is provided and includes a display panel comprising a substrate; a case provided on a back side of the substrate, the case having an outer surface; and a flexible wiring board, one end of which is connected to a top surface of the substrate, curved along the outer surface of the case; wherein the flexible wiring board is fixed to a side surface of the substrate and the outer surface of the case with an adhesive.Type: ApplicationFiled: November 25, 2020Publication date: March 18, 2021Inventors: Tomoya TEZEN, Ken SUGIYAMA, Kosuke MATSUBARA, Koji HIRAMOTO, Takeshi KANEKI
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Patent number: 10897815Abstract: According to one embodiment, a display device includes a display panel including pad portions, a flexible printed circuit, the flexible printed circuit includes a base member with a first surface and a second surface, wiring lines, and a protective layer, and including a bend area, and a first edge and a second edge, the base member includes a groove portion located in the bend area and formed in the second surface, a first frame region between the first edge and the groove portion, and a second frame region between the second edge and the groove portion, a thickness of the base member in a position where the groove portion is formed is less than a thickness of the base member in a position which overlaps the first frame region and the second frame region.Type: GrantFiled: July 22, 2020Date of Patent: January 19, 2021Assignee: Japan Display Inc.Inventors: Kota Uogishi, Koji Hiramoto, Kengo Kowata
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Patent number: 10877328Abstract: According to one embodiment, a display device includes a display panel, a case including a bottom plate and a side plate provided on the bottom plate and attached to the display panel, and a flexible wring board including a first end joined to the display panel and extending from the display panel toward the bottom plate while being curved around the side plate. The flexible wring board includes a substrate, a conductive layer on a first surface of the substrate and constituting wires, and a protective layer overlaid on the conductive layer and the substrate and opposed to an outer surface of the case. The flexible wring board includes a curved portion curved along the side plate, and the substrate includes a concavity provided in the curved portion.Type: GrantFiled: February 7, 2019Date of Patent: December 29, 2020Assignee: Japan Display Inc.Inventors: Koji Hiramoto, Ken Sugiyama, Kosuke Matsubara, Tomoya Tezen
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Patent number: 10852595Abstract: According to one embodiment, a display device includes a display panel, a case including a bottom plate opposing a rear surface of the display panel and a side plate stand on the bottom plate and attached to the display panel, a flexible wiring board, one end of which is joined to the display panel, curved around the side plate toward the bottom plate to oppose the bottom plate while, and an adhesive filled between the flexible wiring board and the side plate of the case or between the flexible wiring board and both of the side plate and the bottom plate, to adhere the flexible wiring board onto an outer surface of the case and hold the flexible wiring board in a curved state.Type: GrantFiled: January 16, 2019Date of Patent: December 1, 2020Assignee: Japan Display Inc.Inventors: Tomoya Tezen, Ken Sugiyama, Kosuke Matsubara, Koji Hiramoto, Takeshi Kaneki
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Publication number: 20200352020Abstract: According to one embodiment, a display device includes a display panel including pad portions, a flexible printed circuit, the flexible printed circuit includes a base member with a first surface and a second surface, wiring lines, and a protective layer, and including a bend area, and a first edge and a second edge, the base member includes a groove portion located in the bend area and formed in the second surface, a first frame region between the first edge and the groove portion, and a second frame region between the second edge and the groove portion, a thickness of the base member in a position where the groove portion is formed is less than a thickness of the base member in a position which overlaps the first frame region and the second frame region.Type: ApplicationFiled: July 22, 2020Publication date: November 5, 2020Applicant: Japan Display Inc.Inventors: Kota UOGISHI, Koji HIRAMOTO, Kengo KOWATA
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Publication number: 20200326467Abstract: According to one embodiment, a liquid crystal display device includes a liquid crystal panel and a backlight device. The backlight device includes a case with a bottom plate and a side plate, a light guide on the bottom plate, and a light source device. The light source device includes a wiring substrate and a light-emitting element on the wiring substrate. The wiring substrate includes a mounting portion on which the light-emitting element is mounted, a connection wiring portion on a back surface side of the bottom plate, and a joint portion which joints the mounting portion and the connection wiring portion together. The joint portion extends from an inside to an outside of the case through a gap between the side plate of the case and the liquid crystal panel.Type: ApplicationFiled: June 24, 2020Publication date: October 15, 2020Inventors: Kosuke MATSUBARA, Ken SUGIYAMA, Kazunari NISHITA, Koji HIRAMOTO
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Patent number: 10772196Abstract: According to one embodiment, a display device includes a display panel including pad portions, a flexible printed circuit, the flexible printed circuit includes a base member with a first surface and a second surface, wiring lines, and a protective layer, and including a bend area, and a first edge and a second edge, the base member includes a groove portion located in the bend area and formed in the second surface, a first frame region between the first edge and the groove portion, and a second frame region between the second edge and the groove portion, a thickness of the base member in a position where the groove portion is formed is less than a thickness of the base member in a position which overlaps the first frame region and the second frame region.Type: GrantFiled: August 29, 2019Date of Patent: September 8, 2020Assignee: Japan Display Inc.Inventors: Kota Uogishi, Koji Hiramoto, Kengo Kowata
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Patent number: 10732347Abstract: According to one embodiment, a liquid crystal display device includes a liquid crystal panel and a backlight device. The backlight device includes a case with a bottom plate and a side plate, a light guide on the bottom plate, and a light source device. The light source device includes a wiring substrate and a light-emitting element on the wiring substrate. The wiring substrate includes a mounting portion on which the light-emitting element is mounted, a connection wiring portion on a back surface side of the bottom plate, and a joint portion which joints the mounting portion and the connection wiring portion together. The joint portion extends from an inside to an outside of the case through a gap between the side plate of the case and the liquid crystal panel.Type: GrantFiled: April 24, 2018Date of Patent: August 4, 2020Assignee: Japan Display Inc.Inventors: Kosuke Matsubara, Ken Sugiyama, Kazunari Nishita, Koji Hiramoto
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Publication number: 20200077508Abstract: According to one embodiment, a display device includes a display panel including pad portions, a flexible printed circuit, the flexible printed circuit includes a base member with a first surface and a second surface, wiring lines, and a protective layer, and including a bend area, and a first edge and a second edge, the base member includes a groove portion located in the bend area and formed in the second surface, a first frame region between the first edge and the groove portion, and a second frame region between the second edge and the groove portion, a thickness of the base member in a position where the groove portion is formed is less than a thickness of the base member in a position which overlaps the first frame region and the second frame region.Type: ApplicationFiled: August 29, 2019Publication date: March 5, 2020Applicant: Japan Display Inc.Inventors: Kota UOGISHI, Koji HIRAMOTO, Kengo KOWATA
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Patent number: 10578917Abstract: According to one embodiment, a backlight device includes a support frame including a first frame body including a pair of first frame members and a second frame member connected to respective ends of the first frame members and a second frame body being separate from the first frame body, which connects other respective ends of the first frame members to each other, a reflective sheet on the support frame, a light guide on the reflective sheet within the support frame, an optical sheet on the light guide, and a light source unit in the support frame. The light source unit includes a wiring board on the second frame body and a light source on the wiring board, opposing an incidence surface of the light guide.Type: GrantFiled: January 4, 2019Date of Patent: March 3, 2020Assignee: Japan Display Inc.Inventors: Ken Sugiyama, Koji Hiramoto, Taketoshi Masamoto, Kazunari Nishita