Patents by Inventor Hirokazu Fukuyoshi

Hirokazu Fukuyoshi 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).

  • Patent number: 7940347
    Abstract: A backlight unit comprises a chassis having a bay, wall means defining the bay, an aperture opening to the bay, and an optical panel that includes at least one light management feature. The optical panel has one side forming a wall portion of the wall means. A light emitting structure is placed within the bay to light a two-dimensional area on the one side of the optical panel. The backlight unit also comprises a bracket for quick installation and removal of the light emitting structure through the aperture to and from the bay.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: May 10, 2011
    Assignee: NEC Corporation
    Inventors: Shin-ichirou Ono, Hirokazu Fukuyoshi
  • Patent number: 7403243
    Abstract: A housing for holding and fixing components of a liquid crystal display device is composed of a pair of frame members each having the same shape. Four sides of the side face of each frame member are formed such that an outer face section positioned at the outer side when combined and an inner face section positioned at the inner side when combined are stepped to each other, and a cut section is formed between the outer face section and the inner face section. The side face section of the frame member of the housing is formed to be stepped as described above, so that the strength and assembling property are enhanced, thereby being capable of preventing deterioration in display quality caused by the displacement of the position and space of the components.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: July 22, 2008
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Hirokazu Fukuyoshi, Shin-Ichirou Ono
  • Patent number: 7265500
    Abstract: A backlight assembly comprises a plurality of linear light sources arranged in parallel behind a display screen. The plurality of linear light sources is divided into a first group and a second group. The linear light sources belonging to the first group are oriented in a first direction. The linear light sources belonging to the second group are oriented in a second direction opposite to the first direction. The backlight assembly comprises a first inverter substrate for driving the linear light sources belonging to the first group, and a second inverter substrate for driving the linear light sources belonging to the second group. The first and second substrates are arranged on one side of the linear light sources and the opposite side thereof, respectively.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: September 4, 2007
    Assignee: NEC Corporation
    Inventors: Shin-ichirou Ono, Hirokazu Fukuyoshi
  • Patent number: 7221415
    Abstract: A liquid crystal display apparatus of a front light type includes a liquid crystal display panel, a light guide plate, a light source optically connected with the light guide plate and irradiating light to the light guide plate, a space holding member which supports and fixes the liquid crystal panel and the light guide plate in a region outside a display area of the liquid crystal display panel to have a predetermined gap. The space holding member having a base member and an adhesive material layer on at least one side of the base member. A refractive index of the adhesive material layer is smaller than that of the light guide plate.
    Type: Grant
    Filed: April 23, 2003
    Date of Patent: May 22, 2007
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Shin-ichirou Ono, Hirokazu Fukuyoshi
  • Publication number: 20060274549
    Abstract: A plurality of interconnected light guide plates has a display panel disposed on a light radiating surface or each. A first movable hinge portion joint both first ends of a pair of the light guide plates for holding the light guide plates for permitting rotational movement. Second movable hinge portions join second ends of the light guide plates and stabilizing supports for permitting rotational movement between the light guide plates and the stabilizing supports. A light source unit is disposed in the first movable hinge portion to illuminating the display panels through the light guide plates.
    Type: Application
    Filed: June 5, 2006
    Publication date: December 7, 2006
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventor: Hirokazu Fukuyoshi
  • Patent number: 7106394
    Abstract: A double-sided, direct-irradiation type backlight unit has a structure of capable of reducing the luminance irregularity and improve the luminance efficiency. The backlight unit has a scatter-reflection rod member 101 between each adjacent two of elongate lamps. The scatter-reflection rod member 101 has a symmetric shape with respect to the line passing the center thereof in X-direction, and that passing the center thereof in Y-direction. The light emitted from the elongate lamp 102 in X-direction is reflected by the scatter-reflection-rod member 101 and then travels in the direction toward the front- and rear-side diffusion plates 106.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: September 12, 2006
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Shin-Ichirou Ono, Hirokazu Fukuyoshi
  • Patent number: 6993820
    Abstract: A method is provided for manufacturing a support frame of a rectangular display panel within a short working time. The method includes a process of taking out L-shaped component members each having convex portions and concave portions arranged alternately at an end portion in a manner that each of the convex portions and concave portions is bilaterally symmetrical, while a shear droop and a burr are formed on an end portion and process of fitting and coupling end portions of L-shaped component members by placing the convex portions and the concave portions in such a manner that the shear droop of each of the convex portions faces the burr of each of the concave portions and the burr of each of the convex portions faces the shear droop of each of the concave portions and that that the convex portions and the concave portions are pushed towards each other and by pressing the convex portions and the concave portions using a pair of metal molds.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: February 7, 2006
    Assignee: NEC LCD Technologies, Ltd
    Inventors: Fumihiko Fujishiro, Hirokazu Fukuyoshi
  • Publication number: 20050151895
    Abstract: A housing for holding and fixing components of a liquid crystal display device is composed of a pair of frame members each having the same shape. Four sides of the side face of each frame member are formed such that an outer face section positioned at the outer side when combined and an inner face section positioned at the inner side when combined are stepped to each other, and a cut section is formed between the outer face section and the inner face section. The side face section of the frame member of the housing is formed to be stepped as described above, so that the strength and assembling property are enhanced, thereby being capable of preventing deterioration in display quality caused by the displacement of the position and space of the components.
    Type: Application
    Filed: January 10, 2005
    Publication date: July 14, 2005
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventors: Hirokazu Fukuyoshi, Shin-Ichirou Ono
  • Patent number: 6858978
    Abstract: A method is provided for manufacturing a support frame of a rectangular display panel within a short working time. The method includes a process of taking out L-shaped component members each having convex portions and concave portions arranged alternately at an end portion in a manner that each of the convex portions and concave portions is bilaterally symmetrical, while a shear droop and a burr are formed on an end portion and process of fitting and coupling end portions of L-shaped component members by placing the convex portions and the concave portions in such a manner that the shear droop of each of the convex portions faces the burr of each of the concave portions and the burr of each of the convex portions faces the shear droop of each of the concave portions and that that the convex portions and the concave portions are pushed towards each other and by pressing the convex portions and the concave portions using a pair of metal molds.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: February 22, 2005
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Fumihiko Fujishiro, Hirokazu Fukuyoshi
  • Publication number: 20040246394
    Abstract: A backlight assembly comprises a plurality of linear light sources arranged in parallel behind a display screen. The plurality of linear light sources is divided into a first group and a second group. The linear light sources belonging to the first group are oriented in a first direction. The linear light sources belonging to the second group are oriented in a second direction opposite to the first direction. The backlight assembly comprises a first inverter substrate for driving the linear light sources belonging to the first group, and a second inverter substrate for driving the linear light sources belonging to the second group. The first and second substrates are arranged on one side of the linear light sources and the opposite side thereof, respectively.
    Type: Application
    Filed: May 19, 2004
    Publication date: December 9, 2004
    Applicant: NEC LCD Technologies, Ltd.
    Inventors: Shin-ichirou Ono, Hirokazu Fukuyoshi
  • Publication number: 20040233154
    Abstract: A backlight unit comprises a chassis having a bay, wall means defining the bay, an aperture opening to the bay, and an optical panel that includes at least one light management feature. The optical panel has one side forming a wall portion of the wall means. A light emitting structure is placed within the bay to light a two-dimensional area on the one side of the optical panel. The backlight unit also comprises a bracket for quick installation and removal of the light emitting structure through the aperture to and from the bay.
    Type: Application
    Filed: May 19, 2004
    Publication date: November 25, 2004
    Applicant: NEC LCD Technologies, Ltd.
    Inventors: Shin-ichirou Ono, Hirokazu Fukuyoshi
  • Publication number: 20040219857
    Abstract: A method is provided for manufacturing a support frame of a rectangular display panel within a short working time. The method includes a process of taking out L-shaped component members each having convex portions and concave portions arranged alternately at an end portion in a manner that each of the convex portions and concave portions is bilaterally symmetrical, while a shear droop and a burr are formed on an end portion and process of fitting and coupling end portions of L-shaped component members by placing the convex portions and the concave portions in such a manner that the shear droop of each of the convex portions faces the burr of each of the concave portions and the burr of each of the convex portions faces the shear droop of each of the concave portions and that that the convex portions and the concave portions are pushed towards each other and by pressing the convex portions and the concave portions using a pair of metal molds.
    Type: Application
    Filed: June 4, 2004
    Publication date: November 4, 2004
    Applicant: NEC LCD Technologies, Ltd.
    Inventors: Fumihiko Fujishiro, Hirokazu Fukuyoshi
  • Publication number: 20040189892
    Abstract: A double-sided, direct-irradiation type backlight unit has a structure of capable of reducing the luminance irregularity and improve the luminance efficiency. The backlight unit has a scatter-reflection rod member 101 between each adjacent two of elongate lamps. The scatter-reflection rod member 101 has a symmetric shape with respect to the line passing the center thereof in X-direction, and that passing the center thereof in Y-direction. The light emitted from the elongate lamp 102 in X-direction is reflected by the scatter-reflection-rod member 101 and then travels in the direction toward the front- and rear-side diffusion plates 106.
    Type: Application
    Filed: March 24, 2004
    Publication date: September 30, 2004
    Applicant: NEC LCD TECHNOLOGIES, LTD
    Inventors: Shin-Ichirou Ono, Hirokazu Fukuyoshi
  • Patent number: 6693682
    Abstract: A light emission surface having a substantially single surface in a liquid crystal display 1 is designed so as to be opposite to a rear of a liquid crystal panel 2 or a rear of an optical member 5 through an air layer. Thus, it is possible to provide a liquid crystal display that can prevent a heat accumulation in a liquid crystal panel without any drop of brightness, and a light source device used in the liquid crystal display.
    Type: Grant
    Filed: March 14, 2001
    Date of Patent: February 17, 2004
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Fumihiko Fujishiro, Tsutomu Kanatsu, Fumio Hasegawa, Shin-Ichirou Ono, Hirokazu Fukuyoshi
  • Patent number: 6661480
    Abstract: A light emission surface having a substantially single surface in a liquid crystal display 1 is designed so as to be opposite to a rear of a liquid crystal panel 2 or a rear of an optical member 5 through an air layer. Thus, it is possible to provide a liquid crystal display that can prevent a heat accumulation in a liquid crystal panel without any drop of brightness, and a light source device used in the liquid-crystal display.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: December 9, 2003
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Fumihiko Fujishiro, Tsutomu Kanatsu, Fumio Hasegawa, Shin-Ichirou Ono, Hirokazu Fukuyoshi
  • Publication number: 20030202135
    Abstract: A liquid crystal display apparatus of a front light type includes a liquid crystal display panel, a light guide plate, a light source optically connected with the light guide plate and irradiating light to the light guide plate, a space holding member which supports and fixes the liquid crystal panel and the light guide plate in a region outside a display area of the liquid crystal display panel to have a predetermined gap. The space holding member having a base member and an adhesive material layer on at least one side of the base member. A refractive index of the adhesive material layer is smaller than that of the light guide plate.
    Type: Application
    Filed: April 23, 2003
    Publication date: October 30, 2003
    Applicant: NEC LCD Technologies, Ltd.
    Inventors: Shin-ichirou Ono, Hirokazu Fukuyoshi
  • Patent number: 6594143
    Abstract: The present invention provides a mounting structure for mounting a liquid crystal module having a display area. The mounting structure comprises: at least a frame member having a plurality of connecting members for connecting the frame member to the liquid crystal module substantially in parallel to each other, wherein each of the connecting members extends between the liquid crystal module and the frame member in a direction vertical to a surface of the frame member.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: July 15, 2003
    Assignee: NEC Corporation
    Inventors: Takakazu Yano, Tomoo Miwa, Yasuhiro Sato, Toshihisa Ogawa, Michiaki Nishiyama, Masatake Baba, Hikaru Okabe, Fumihiko Fujishiro, Katsuhiro Kato, Kazuaki Mikami, Hirokazu Fukuyoshi
  • Patent number: 6568831
    Abstract: A method for attaching a cable to a fluorescent tube is provided which is capable of making narrow a width of a plaque edge portion by saving a redundant space in a connected portion in which a fluorescent tube is connected to cables, of improving reliability by enhancing mechanical strength at the connected portion and of reducing counts of components required to reinforce the connected portion and the number of processes necessary for assembly. Each of a pair of cables for supplying power to the fluorescent tube is connected to each of ends of the fluorescent tube. The connected portion in which an end of the fluorescent tube is connected to the cable is molded with a resin to form a resin-molded portion. A holding member fabricated by an injection molding machine is attached to the connected portion. A reflector used to reflect light emitted from the fluorescent tube is integrally attached.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: May 27, 2003
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Shin-Ichirou Ono, Hirokazu Fukuyoshi
  • Publication number: 20030095216
    Abstract: A light emission surface having a substantially single surface in a liquid crystal display 1 is designed so as to be opposite to a rear of a liquid crystal panel 2 or a rear of an optical member 5 through an air layer. Thus, it is possible to provide a liquid crystal display that can prevent a heat accumulation in a liquid crystal panel without any drop of brightness, and a light source device used in the liquid crystal display.
    Type: Application
    Filed: November 21, 2002
    Publication date: May 22, 2003
    Applicant: NEC Corporation
    Inventors: Fumihiko Fujishiro, Tsutomu Kanatsu, Fumio Hasegawa, Shin-Ichirou Ono, Hirokazu Fukuyoshi
  • Publication number: 20030081414
    Abstract: A method for attaching a cable to a fluorescent tube is provided which is capable of making narrow a width of a plaque edge portion by saving a redundant space in a connected portion in which a fluorescent tube is connected to cables, of improving reliability by enhancing mechanical strength at the connected portion and of reducing counts of components required to reinforce the connected portion and the number of processes necessary for assembly.
    Type: Application
    Filed: October 31, 2001
    Publication date: May 1, 2003
    Inventors: Shin-Ichirou Ono, Hirokazu Fukuyoshi