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).
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Patent number: 7940347Abstract: 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: GrantFiled: May 19, 2004Date of Patent: May 10, 2011Assignee: NEC CorporationInventors: Shin-ichirou Ono, Hirokazu Fukuyoshi
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Patent number: 7403243Abstract: 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: GrantFiled: January 10, 2005Date of Patent: July 22, 2008Assignee: NEC LCD Technologies, Ltd.Inventors: Hirokazu Fukuyoshi, Shin-Ichirou Ono
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Patent number: 7265500Abstract: 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: GrantFiled: May 19, 2004Date of Patent: September 4, 2007Assignee: NEC CorporationInventors: Shin-ichirou Ono, Hirokazu Fukuyoshi
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Patent number: 7221415Abstract: 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: GrantFiled: April 23, 2003Date of Patent: May 22, 2007Assignee: NEC LCD Technologies, Ltd.Inventors: Shin-ichirou Ono, Hirokazu Fukuyoshi
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Publication number: 20060274549Abstract: 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: ApplicationFiled: June 5, 2006Publication date: December 7, 2006Applicant: NEC LCD TECHNOLOGIES, LTD.Inventor: Hirokazu Fukuyoshi
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Patent number: 7106394Abstract: 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: GrantFiled: March 24, 2004Date of Patent: September 12, 2006Assignee: NEC LCD Technologies, Ltd.Inventors: Shin-Ichirou Ono, Hirokazu Fukuyoshi
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Patent number: 6993820Abstract: 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: GrantFiled: June 4, 2004Date of Patent: February 7, 2006Assignee: NEC LCD Technologies, LtdInventors: Fumihiko Fujishiro, Hirokazu Fukuyoshi
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Publication number: 20050151895Abstract: 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: ApplicationFiled: January 10, 2005Publication date: July 14, 2005Applicant: NEC LCD TECHNOLOGIES, LTD.Inventors: Hirokazu Fukuyoshi, Shin-Ichirou Ono
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Patent number: 6858978Abstract: 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: GrantFiled: March 26, 2002Date of Patent: February 22, 2005Assignee: NEC LCD Technologies, Ltd.Inventors: Fumihiko Fujishiro, Hirokazu Fukuyoshi
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Publication number: 20040246394Abstract: 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: ApplicationFiled: May 19, 2004Publication date: December 9, 2004Applicant: NEC LCD Technologies, Ltd.Inventors: Shin-ichirou Ono, Hirokazu Fukuyoshi
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Publication number: 20040233154Abstract: 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: ApplicationFiled: May 19, 2004Publication date: November 25, 2004Applicant: NEC LCD Technologies, Ltd.Inventors: Shin-ichirou Ono, Hirokazu Fukuyoshi
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Publication number: 20040219857Abstract: 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: ApplicationFiled: June 4, 2004Publication date: November 4, 2004Applicant: NEC LCD Technologies, Ltd.Inventors: Fumihiko Fujishiro, Hirokazu Fukuyoshi
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Publication number: 20040189892Abstract: 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: ApplicationFiled: March 24, 2004Publication date: September 30, 2004Applicant: NEC LCD TECHNOLOGIES, LTDInventors: Shin-Ichirou Ono, Hirokazu Fukuyoshi
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Patent number: 6693682Abstract: 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: GrantFiled: March 14, 2001Date of Patent: February 17, 2004Assignee: NEC LCD Technologies, Ltd.Inventors: Fumihiko Fujishiro, Tsutomu Kanatsu, Fumio Hasegawa, Shin-Ichirou Ono, Hirokazu Fukuyoshi
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Patent number: 6661480Abstract: 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: GrantFiled: November 21, 2002Date of Patent: December 9, 2003Assignee: NEC LCD Technologies, Ltd.Inventors: Fumihiko Fujishiro, Tsutomu Kanatsu, Fumio Hasegawa, Shin-Ichirou Ono, Hirokazu Fukuyoshi
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Publication number: 20030202135Abstract: 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: ApplicationFiled: April 23, 2003Publication date: October 30, 2003Applicant: NEC LCD Technologies, Ltd.Inventors: Shin-ichirou Ono, Hirokazu Fukuyoshi
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Patent number: 6594143Abstract: 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: GrantFiled: December 13, 1999Date of Patent: July 15, 2003Assignee: NEC CorporationInventors: Takakazu Yano, Tomoo Miwa, Yasuhiro Sato, Toshihisa Ogawa, Michiaki Nishiyama, Masatake Baba, Hikaru Okabe, Fumihiko Fujishiro, Katsuhiro Kato, Kazuaki Mikami, Hirokazu Fukuyoshi
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Patent number: 6568831Abstract: 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: GrantFiled: October 31, 2001Date of Patent: May 27, 2003Assignee: NEC LCD Technologies, Ltd.Inventors: Shin-Ichirou Ono, Hirokazu Fukuyoshi
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Publication number: 20030095216Abstract: 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: ApplicationFiled: November 21, 2002Publication date: May 22, 2003Applicant: NEC CorporationInventors: Fumihiko Fujishiro, Tsutomu Kanatsu, Fumio Hasegawa, Shin-Ichirou Ono, Hirokazu Fukuyoshi
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Publication number: 20030081414Abstract: 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: ApplicationFiled: October 31, 2001Publication date: May 1, 2003Inventors: Shin-Ichirou Ono, Hirokazu Fukuyoshi