Patents by Inventor Masahiro Nishizawa
Masahiro Nishizawa 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: 9310619Abstract: To provide a thin optical sheet having improved efficiency for light utilization, an optical sheet (5) of one mode of the present invention includes, in sequence from a light entry side to a light emission side, a plurality of first prisms (13), a ¼ wavelength plate (11), and a polarized-light separating element (12), the plurality of first prisms (13) each having (i) a first surface (13a) through which light enters the first prism and (ii) a second surface (13b) that reflects the light, having entered the first prism, toward the light emission side, the optical film further including, between the plurality of first prisms in an in-plane direction of the optical film, a second prism (14) that reflects light.Type: GrantFiled: February 15, 2013Date of Patent: April 12, 2016Assignees: Sharp Kabushiki Kaisha, Tohoku UniversityInventors: Tatsuo Uchida, Yoshito Suzuki, Tohru Kawakami, Kazuo Sekiya, Masahiro Nishizawa, Takahiro Ishinabe, Katsunori Ehara, Yoshihiro Hashimoto, Yasuhisa Itoh, Yoshitaka Yamamoto, Yutaka Ishii
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Patent number: 9122097Abstract: A backlight system (30) includes a light emitting section (31) and an imaging optical system. The imaging optical system includes a first microlens array (MLA1) and a second microlens array (MLA2). The lenses (1A) separates the beams of light emitted from the light emitting section (31) by RGB, and causes them to be converged at a pitch same as a pitch at which the picture elements are arrayed. The lenses (2A) are provided in one-to-one correspondence to the picture elements such that the lenses (2A) have their respective focal points at positions onto which beams of light having passed through the lenses (1A) are converged. The lenses (2A) thus deflect the beams of light which have passed through the lenses (1A) in a substantially vertical direction with respect to the display surface of the liquid crystal panel.Type: GrantFiled: December 22, 2010Date of Patent: September 1, 2015Assignees: Sharp Kabushiki Kaisha, Tohoku UniversityInventors: Tatsuo Uchida, Yoshito Suzuki, Tohru Kawakami, Kazuo Sekiya, Masahiro Nishizawa, Takahiro Ishinabe, Baku Katagiri, Katsunori Ehara, Yoshihiro Hashimoto, Shoichi Ishihara, Shuichi Kozaki, Yutaka Ishii
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Publication number: 20150036215Abstract: To provide a thin optical sheet having improved efficiency for light utilization, an optical sheet (5) of one mode of the present invention includes, in sequence from a light entry side to a light emission side, a plurality of first prisms (13), a ¼ wavelength plate (11), and a polarized-light separating element (12), the plurality of first prisms (13) each having (i) a first surface (13a) through which light enters the first prism and (ii) a second surface (13b) that reflects the light, having entered the first prism, toward the light emission side, the optical film further including, between the plurality of first prisms in an in-plane direction of the optical film, a second prism (14) that reflects light.Type: ApplicationFiled: February 15, 2013Publication date: February 5, 2015Inventors: Tatsuo Uchida, Yoshito Suzuki, Tohru Kawakami, Kazuo Sekiya, Masahiro Nishizawa, Takahiro Ishinabe, Katsunori Ehara, Yoshihiro Hashimoto, Yasuhisa Itoh, Yoshitaka Yamamoto, Yutaka Ishii
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Publication number: 20150015456Abstract: A multi-display device (101) of the present invention includes fry-eye lens arrays (3), located between a plurality of liquid crystal modules (11) arranged in parallel and in a tiling manner and a diffusing element (12), which cause rays of light emitted from light source sections (2) and transmitted through the liquid crystal modules (11) to be condensed on the diffusing element (12) at a pitch that is wider than a pixel pitch of the liquid crystal modules (11). This makes it possible with a simple configuration to make seams between image modulation elements less conspicuous and give a satisfactory feeling of resolution.Type: ApplicationFiled: February 14, 2013Publication date: January 15, 2015Applicant: TOUOKU UNIVERISTYInventors: Tatsuo Uchida, Yoshito Suzuki, Tohru Kawakami, Kazuo Sekiya, Masahiro Nishizawa, Takahiro Ishinabe, Katsunori Ehara, Yoshihiro Hashimoto, Yasuhisa Itoh, Yoshitaka Yamamoto, Yutaka Ishii
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Patent number: 8922735Abstract: A backlight system includes: a light-emitting section (1) having a plurality of light sources that emit beams of light at different dominant wavelengths from one another; and an imaging optical system (3) including a plurality of microlenses (3a) that focus beams of light emitted from the light-emitting section (1), the backlight system irradiating a liquid crystal panel with beams of light having passed through the imaging optical system (3), the liquid crystal panel including a plurality of pixels arrayed at a predetermined pitch from each other, on the assumption that the pitch at which the pixels are arrayed is denoted as P and the imaging optical system (3) has an imaging magnification of (1/n), the light sources (1) being arrayed at a pitch (P1) given as P1=n×P, the microlenses (3a) being arrayed at a pitch (P2) given as P2=(n/(n+1))×P.Type: GrantFiled: June 2, 2010Date of Patent: December 30, 2014Assignees: Sharp Kabushiki Kaisha, Tohoku UniversityInventors: Tatsuo Uchida, Yoshito Suzuki, Tohru Kawakami, Kazuo Sekiya, Masahiro Nishizawa, Takahiro Ishinabe, Baku Katagiri, Yoshihiro Hashimoto, Shoichi Ishihara, Shuichi Kozaki, Yutaka Ishii
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Patent number: 8720159Abstract: In a method of floor construction in a machinery preceding conveyance area of a building, such as a nuclear power plant, a floor of the building is divided into two work zones, floor and outer wall construction is performed in one of the work zones of the divided work zones of the floor as building work, preceding carry-in articles is installed in sequence as electric/mechanic equipment installing working, and partition wall construction which is building work is performed. In the other work zone, construction work of the floor and outer walls is performed as building working during the electric/mechanic equipment installing working in the aforementioned one of the divided work zone.Type: GrantFiled: September 16, 2010Date of Patent: May 13, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Akihiko Kobayashi, Masahiro Nishizawa, Takao Tokita
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Publication number: 20130201424Abstract: A backlight system (30) includes a light emitting section (31) and an imaging optical system. The imaging optical system includes a first microlens array (MLA1) and a second microlens array (MLA2). The lenses (1A) separates the beams of light emitted from the light emitting section (31) by RGB, and causes them to be converged at a pitch same as a pitch at which the picture elements are arrayed. The lenses (2A) are provided in one-to-one correspondence to the picture elements such that the lenses (2A) have their respective focal points at positions onto which beams of light having passed through the lenses (1A) are converged. The lenses (2A) thus deflect the beams of light which have passed through the lenses (1A) in a substantially vertical direction with respect to the display surface of the liquid crystal panel.Type: ApplicationFiled: December 22, 2010Publication date: August 8, 2013Inventors: Tatsuo Uchida, Yoshito Suzuki, Tohru Kawakami, Kazuo Sekiya, Masahiro Nishizawa, Takahiro Ishinabe, Baku Katagiri, Katsunori Ehara, Yoshihiro Hashimoto, Shoichi Ishihara, Shuichi Kozaki, Yutaka Ishii
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Publication number: 20120127398Abstract: A backlight system includes: a light-emitting section (1) having a plurality of light sources that emit beams of light at different dominant wavelengths from one another; and an imaging optical system (3) including a plurality of microlenses (3a) that focus beams of light emitted from the light-emitting section (1), the backlight system irradiating a liquid crystal panel with beams of light having passed through the imaging optical system (3), the liquid crystal panel including a plurality of pixels arrayed at a predetermined pitch from each other, on the assumption that the pitch at which the pixels are arrayed is denoted as P and the imaging optical system (3) has an imaging magnification of (1/n), the light sources (1) being arrayed at a pitch (P1) given as P1=n×P, the microlenses (3a) being arrayed at a pitch (P2) given as P2=(n/(n+1))×P.Type: ApplicationFiled: June 2, 2010Publication date: May 24, 2012Applicants: TOHOKU UNIVERSITY, SHARP KABUSHIKI KAISHAInventors: Tatsuo Uchida, Yoshito Suzuki, Tohru Kawakami, Kazuo Sekiya, Masahiro Nishizawa, Takahiro Ishinabe, Baku Katagiri, Yoshihiro Hashimoto, Shoichi Ishihara, Shuichi Kozaki, Yutaka Ishii
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Publication number: 20110067352Abstract: In a method of floor construction in a machinery preceding conveyance area of a building, such as a nuclear power plant, a floor of the building is divided into two work zones, floor and outer wall construction is performed in one of the work zones of the divided work zones of the floor as building work, preceding carry-in articles is installed in sequence as electric/mechanic equipment installing working, and partition wall construction which is building work is performed. In the other work zone, construction work of the floor and outer walls is performed as building working during the electric/mechanic equipment installing working in the aforementioned one of the divided work zone.Type: ApplicationFiled: September 16, 2010Publication date: March 24, 2011Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Akihiko KOBAYASHI, Masahiro NISHIZAWA, Takao TOKITA
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Patent number: 7692744Abstract: The present invention provides a transflective liquid crystal display device which includes diffusion reflective electrodes suitable for a display of high definition. Into an organic resin film material PET which is formed by mixing NQD as a photosensitive agent in an acrylic resin having a specific gravity of 1.05 and a refractive index of 1.50, spherical particles PTC made of acrylic modified polystyrene which has a specific gravity of 1.00, a refractive index of 1.50 and a particle size of 1.6 ?m are mixed at a rate of 3:1 so as to form an organic insulation film material in which a total solid content is adjusted to 30% and viscosity is adjusted 20 mPa·s. The organic insulation film material is applied and is dried to form an organic insulation film. A portion of the organic insulation film which is to be arranged below a diffusion reflective electrode is exposed using an exposure mask having half exposure apertures which are formed of a large number of slits and the organic insulation film is hardened.Type: GrantFiled: October 11, 2007Date of Patent: April 6, 2010Assignee: Hitachi Displays, Ltd.Inventors: Toshimasa Ishigaki, Masahiro Nishizawa, Fumio Takahashi
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Patent number: 7671825Abstract: According to one aspect of the present invention, it is possible to sufficiently perform the discharging of charge without lowering the light emitting efficiency of an organic EL device and hence, the device can exhibit the light emitting efficiency higher than a conventional organic EL device and, at the same time, can prevent the degradation of the device. As an organic EL device to which the present invention is applied, on a glass transparent substrate, a transparent electrode, a hole injection layer and a hole transport layer which function as a hole transport function layer, a light emitting layer, an electron transport function layer, and a metal electrode are formed sequentially, and a drive power sources are connected to the transparent electrode and the metal electrode.Type: GrantFiled: February 24, 2006Date of Patent: March 2, 2010Assignee: Hitachi Displays, Ltd.Inventors: Norikazu Uchiyama, Masaaki Okunaka, Masahiro Nishizawa, Hidetsugu Matsukiyo, Yuko Matsumoto
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Publication number: 20090324746Abstract: The invention relates to a multi-component chlorine dioxide producing system. The invention produces effective amounts of chlorine dioxide in five minutes or less without instantaneous production or loss of chlorine dioxide. The invention further includes a dispensing apparatus to allow for the dispensing of the multi component system to allow for insitu production of chlorine dioxide.Type: ApplicationFiled: July 22, 2009Publication date: December 31, 2009Inventors: Andrew M. Bober, Charles Crawford, Dale A. Grinstead, Masahiro Nishizawa, Kenneth J. Roach, Carol Anne Rouillard, James H. Whitehead, William B. Wright
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Patent number: 7460189Abstract: The present invention realizes the two-layered resist structure for obtaining a half exposure pattern of high sensitivity and high accuracy and a manufacturing method of a display device which includes thin film transistors which are formed using the two-layered resist. The resist is constituted of five layers, that is, a base film, a cushion layer, an upper-layer resist, a lower-layer resist and a cover film. Thicknesses of these structural members are set such that base film has a thickness of 50 to 100 ?m, the cushion layer has a thickness of 10 to 30 ?m, the upper-layer resist has a thickness of 0.5 to 1.0 ?m, the lower-layer resist has a thickness of 0.5 to 1.0 ?m, and the cover film has a thickness of 10 to 30 ?m.Type: GrantFiled: July 10, 2006Date of Patent: December 2, 2008Assignee: Hitachi Displays, Ltd.Inventors: Toshimasa Ishigaki, Masahiro Nishizawa, Fumio Takahashi
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Patent number: 7452587Abstract: A polyester resin composition which comprises 30 to 80 wt % of a polybutylene terephthalate resin (A), 10 to 40 wt % of a polyethylene terephthalate resin (B), 0.1 to 40 wt % of a calcined kaolin (C) having an average particle diameter of 1.5 micro meter or less and 0.1 to 40 wt % of a spherical inorganic filler (D) is excellent in direct metal vapor deposition ability, and a light-reflecting article comprising a molded article from the resin composition and a vapor deposited metal film formed on part or whole of the surface of the molded article provides a high brightness feeling and is free from lowering of the brightness feeling due to shadowing after high temperature exposure, and thus can be suitably used as a housing, a reflector or an extension in an automobile lamp, a lighting apparatus in a household electrical appliance, or the like.Type: GrantFiled: July 8, 2005Date of Patent: November 18, 2008Assignee: Toray Industries, Inc.Inventors: Koichi Seino, Masahiro Nishizawa, Takamasa Owaki
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Patent number: 7397614Abstract: A display device includes an optical region containing a plurality of pigment grains. Each of the plurality of pigment grains formed by a plurality of pigment molecules encapsulated in an inorganic material, and each of the plurality of pigment grains has a grain size not greater than 70 nm.Type: GrantFiled: August 22, 2006Date of Patent: July 8, 2008Assignee: Hitachi Displays, Ltd.Inventors: Maki Taniguchi, Tomoji Oishi, Masahiro Nishizawa, Shinichi Kato, Norikazu Uchiyama
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Publication number: 20080143239Abstract: The present invention provides an image display device which can acquire a favorable white balance. In the image display device including a first substrate which has a plurality of electron emitting elements, and a second substrate which is arranged to face the first substrate in an opposed manner and has phosphors of three colors consisting of red, green and blue which emit lights upon excitation thereof by electrons emitted from the electron emitting elements, the phosphors of three colors consisting of red, green and blue which emit the lights upon excitation thereof by the electrons emitted from the electron emitting elements displaying 9300K which is standard white of NTSC, an excitation current density ratio of red, green and blue is set to a value which falls within a range of red:green:blue=95-105:100:95-105.Type: ApplicationFiled: September 7, 2007Publication date: June 19, 2008Inventors: Masaki Nishikawa, Masahiro Nishizawa, Hidetsugu Matsukiyo, Go Saitou, Toshimitsu Watanabe
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Publication number: 20080088776Abstract: The present invention provides a transflective liquid crystal display device which includes diffusion reflective electrodes suitable for a display of high definition. Into an organic resin film material PET which is formed by mixing NQD as a photosensitive agent in an acrylic resin having a specific gravity of 1.05 and a refractive index of 1.50, spherical particles PTC made of acrylic modified polystyrene which has a specific gravity of 1.00, a refractive index of 1.50 and a particle size of 1.6 ?m are mixed at a rate of 3:1 so as to form an organic insulation film material in which a total solid content is adjusted to 30% and viscosity is adjusted 20 mPa·s. The organic insulation film material is applied and is dried to form an organic insulation film. A portion of the organic insulation film which is to be arranged below a diffusion reflective electrode is exposed using an exposure mask having half exposure apertures which are formed of a large number of slits and the organic insulation film is hardened.Type: ApplicationFiled: October 11, 2007Publication date: April 17, 2008Inventors: Toshimasa Ishigaki, Masahiro Nishizawa, Fumio Takahashi
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Publication number: 20070254150Abstract: A polyester resin composition which comprises 30 to 80 wt % of a polybutylene terephthalate resin (A), 10 to 40 wt % of a polyethylene terephthalate resin (B), 0.1 to 40 wt % of a calcined kaolin (C) having an average particle diameter of 1.5 micro meter or less and 0.1 to 40 wt % of a spherical inorganic filler (D) is excellent in direct metal vapor deposition ability, and a light-reflecting article comprising a molded article from the resin composition and a vapor deposited metal film formed on part or whole of the surface of the molded article provides a high brightness feeling and is free from lowering of the brightness feeling due to shadowing after high temperature exposure, and thus can be suitably used as a housing, a reflector or an extension in an automobile lamp, a lighting apparatus in a household electrical appliance, or the like.Type: ApplicationFiled: July 8, 2005Publication date: November 1, 2007Inventors: Koichi Seino, Masahiro Nishizawa, Takamasa Owaki
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Publication number: 20070008442Abstract: The present invention realizes the two-layered resist structure for obtaining a half exposure pattern of high sensitivity and high accuracy and a manufacturing method of a display device which includes thin film transistors which are formed using the two-layered resist. The resist is constituted of five layers, that is, a base film, a cushion layer, an upper-layer resist, a lower-layer resist and a cover film. Thicknesses of these structural members are set such that base film has a thickness of 50 to 100 ?m, the cushion layer has a thickness of 10 to 30 ?m, the upper-layer resist has a thickness of 0.5 to 1.0 ?m, the lower-layer resist has a thickness of 0.5 to 1.0 ?m, and the cover film has a thickness of 10 to 30 ?m.Type: ApplicationFiled: July 10, 2006Publication date: January 11, 2007Inventors: Toshimasa Ishigaki, Masahiro Nishizawa, Fumio Takahashi
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Publication number: 20060279854Abstract: A display device includes an optical region containing a plurality of pigment grains. Each of the plurality of pigment grains formed by a plurality of pigment molecules encapsulated in an inorganic material, and each of the plurality of pigment grains has a grain size not greater than 70 nm.Type: ApplicationFiled: August 22, 2006Publication date: December 14, 2006Inventors: Maki Taniguchi, Tomoji Oishi, Masahiro Nishizawa, Shinichi Kato, Norikazu Uchiyama