Patents by Inventor Hidetsugu Matsukiyo
Hidetsugu Matsukiyo 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: 11506360Abstract: Provided is compatibility between adhesion to a substrate (lower layer) and durability improvement. An optical element includes a phosphor layer facing a lower layer, and a bonding layer keeping the phosphor layer in intimate contact with the lower layer. The phosphor layer includes an inorganic binder, and phosphor particle dispersed with the inorganic binder. The bonding layer includes an organic binder. The phosphor layer has a first surface facing the lower layer, a second surface opposite to the first surface, and a side surface connecting the first and second surfaces together. The bonding layer connects together the second surface, the side surface, and a surface of the lower layer to keep the phosphor layer in intimate contact with the lower layer.Type: GrantFiled: October 17, 2019Date of Patent: November 22, 2022Assignee: SHARP KABUSHIKI KAISHAInventors: Hideomi Yui, Shigeru Aomori, Tsuyoshi Kamada, Hidetsugu Matsukiyo, Toru Kanno, Hirokazu Ichinose
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Publication number: 20220170613Abstract: An optical element includes: a phosphor layer excited by excitation light emitted from a light source, and emitting fluorescence; a translucent thermal-conductive layer formed on a face of the phosphor layer that is irradiated with the excitation light; and a non-translucent thermal-conductive layer formed on a face of the phosphor layer that is across from the face irradiated with the excitation light. The translucent thermal-conductive layer has a thermal conductivity higher than, or equal to, a thermal conductivity of the phosphor layer.Type: ApplicationFiled: March 10, 2020Publication date: June 2, 2022Inventors: TOMOKO UEKI, SHIGERU AOMORI, HIDETSUGU MATSUKIYO
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Publication number: 20210372593Abstract: Provided is compatibility between adhesion to a substrate (lower layer) and durability improvement. An optical element includes a phosphor layer facing a lower layer, and a bonding layer keeping the phosphor layer in intimate contact with the lower layer. The phosphor layer includes an inorganic binder, and phosphor particle dispersed with the inorganic binder. The bonding layer includes an organic binder. The phosphor layer has a first surface facing the lower layer, a second surface opposite to the first surface, and a side surface connecting the first and second surfaces together. The bonding layer connects together the second surface, the side surface, and a surface of the lower layer to keep the phosphor layer in intimate contact with the lower layer.Type: ApplicationFiled: October 17, 2019Publication date: December 2, 2021Inventors: HIDEOMI YUI, SHIGERU AOMORI, TSUYOSHI KAMADA, HIDETSUGU MATSUKIYO, TORU KANNO, HIROKAZU ICHINOSE
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Publication number: 20210210660Abstract: A wavelength conversion element having improved fluorescent light emission intensity is achieved by controlling the increase in the temperature of the fluorescent layer. The wavelength conversion element includes a fluorescent layer in which phosphor particles are dispersed in a binder, the fluorescent layer including a first region and a second region, the first region being configured to be at a more elevated temperature than the second region due to an effect of excitation light, wherein the phosphor particles are constituted of a phosphor doped with a central light emitting element, and at least one of a concentration of the central light emitting element, a size of the phosphor particles, and a volume ratio of the phosphor particles with respect to the binder is configured to change from the first region to the second region of the fluorescent layer.Type: ApplicationFiled: May 31, 2019Publication date: July 8, 2021Inventors: TORU KANNO, SHIGERU AOMORI, HIDETSUGU MATSUKIYO
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Patent number: 10989996Abstract: A light source device that radiates excitation light or emitted light by the excitation light, includes: an excitation light source that radiates the excitation light; a fluorescent wheel that includes a phosphor, which emits light in a predetermined wavelength range on reception of the excitation light, in a circumferential direction; a driving device that rotates the fluorescent wheel; and a shielding member that is arranged around the excitation light source and the fluorescent wheel and shields the excitation light and the emitted light, wherein an opening through which outside air is introduced is provided at a part of the shielding member.Type: GrantFiled: November 9, 2018Date of Patent: April 27, 2021Assignee: SHARP KABUSHIKI KAISHAInventors: Hideomi Yui, Shigeru Aomori, Hidetsugu Matsukiyo
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Patent number: 10920139Abstract: A phosphor layer composition, phosphor member, light source device, and projection device are provided that are capable of restraining reflection or scattering at interfaces between phosphor particles and a binder to improve the excitation-light absorption by, and the external quantum efficiency of, the phosphor particles. The present invention, in an aspect thereof, is directed to a phosphor layer composition including: phosphor particles 111 absorbing excitation light and emitting prescribed fluorescence; and a binder 112 composed of a translucent gel containing a metal alkoxide or a mixture of a metal alkoxide and a metal oxide, wherein the phosphor particles 111 are dispersed in the binder 112, and the phosphor particles 111 and the binder 112 differ in refractive index by 0.3 or less.Type: GrantFiled: June 22, 2018Date of Patent: February 16, 2021Assignee: SHARP KABUSHIKI KAISHAInventors: Shigeru Aomori, Hideomi Yui, Mutsuko Yamamoto, Hidetsugu Matsukiyo
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Publication number: 20200355992Abstract: A light source device that radiates excitation light or emitted light by the excitation light, includes: an excitation light source that radiates the excitation light; a fluorescent wheel that includes a phosphor, which emits light in a predetermined wavelength range on reception of the excitation light, in a circumferential direction; a driving device that rotates the fluorescent wheel; and a shielding member that is arranged around the excitation light source and the fluorescent wheel and shields the excitation light and the emitted light, wherein an opening through which outside air is introduced is provided at a part of the shielding member.Type: ApplicationFiled: November 9, 2018Publication date: November 12, 2020Inventors: HIDEOMI YUI, SHIGERU AOMORI, HIDETSUGU MATSUKIYO
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Publication number: 20200239770Abstract: A phosphor layer composition, phosphor member, light source device, and projection device are provided that are capable of restraining reflection or scattering at interfaces between phosphor particles and a binder to improve the excitation-light absorption by, and the external quantum efficiency of, the phosphor particles. The present invention, in an aspect thereof, is directed to a phosphor layer composition including: phosphor particles 111 absorbing excitation light and emitting prescribed fluorescence; and a binder 112 composed of a translucent gel containing a metal alkoxide or a mixture of a metal alkoxide and a metal oxide, wherein the phosphor particles 111 are dispersed in the binder 112, and the phosphor particles 111 and the binder 112 differ in refractive index by 0.3 or less.Type: ApplicationFiled: June 22, 2018Publication date: July 30, 2020Inventors: SHIGERU AOMORI, HIDEOMI YUI, MUTSUKO YAMAMOTO, HIDETSUGU MATSUKIYO
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Patent number: 10018912Abstract: A photosensitive resin composition includes a positive photosensitive resin having a photosensitive moiety that cleaves upon exposure to light, and a wavelength conversion material dispersed in the photosensitive resin. The photosensitive resin and the wavelength conversion material meet (i) to (iv): (i) The photosensitive moiety and the cleavage product of the photosensitive resin do not neutralize the wavelength conversion material; (ii) The photosensitive moiety and the cleavage product do not induce hydrolysis of the wavelength conversion material; (iii) The HOMOs of the photosensitive moiety and the cleavage product are lower than the LUMO of the wavelength conversion material; and (iv) The LUMOs of the photosensitive moiety and the cleavage product are higher than the HOMO of the wavelength conversion material. (Any combination of a chemically amplified photosensitive resin with an acidic photosensitive moiety or cleavage product and an acidic wavelength conversion material is excluded.Type: GrantFiled: June 12, 2015Date of Patent: July 10, 2018Assignee: Sharp Kabushiki KaishaInventors: Masakazu Kamura, Akiko Iwata, Hiroshi Nakano, Bai Zhang, Hidetsugu Matsukiyo, Shigeru Aomori
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Patent number: 9701927Abstract: A cleaning solution is used, in a transparent antireflective structure that has, on one surface thereof, a plurality of convexities formed at a period equal to or shorter than wavelength in a visible light range, and that prevents, at the one surface, reflection of light entering the one surface, to clean a concavity defining a region between adjacent two of the plural convexities, the cleaning solution having a pH of 10.00 or more.Type: GrantFiled: January 27, 2014Date of Patent: July 11, 2017Assignee: Sharp Kabushiki KaishaInventors: Kyohko Matsuura, Yuhsuke Tsuda, Hidetsugu Matsukiyo, Yuka Utsumi, Akiyoshi Fujii, Takahiro Nakahara, Kiyoshi Minoura, Miho Yamada
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Patent number: 9698204Abstract: A CCM substrate (1) includes as a light-emitting layer on a substrate (11) a red conversion layer (142), a green conversion layer (152), and a light scattering layer (162); a bank (13) which stands on the substrate (11), and partitions the light-emitting layer; and a light-transmission suppressing layer (10) which is formed on at least a portion of a side surface (13a) of the bank (13) which is a surface facing the light-emitting layer, and suppresses light transmission between the light-emitting layers (the red conversion layer (142), the green conversion layer (152), and the light scattering layer (162)) with the bank (13) interposed therebetween by causing the light to be reflected or scattered, in which the light-transmission suppressing layer (10) is comprising metal or metal salt, and the bank (13) has a group, an ion, or a molecule for immobilizing the metal or metal ion.Type: GrantFiled: December 5, 2014Date of Patent: July 4, 2017Assignee: SHARP KABUSHIKI KAISHAInventors: Masakazu Kamura, Shun Ueki, Akiko Iwata, Yuka Igami, Bai Zhang, Shigeru Aomori, Hidetsugu Matsukiyo
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Publication number: 20170123317Abstract: A photosensitive resin composition includes a positive photosensitive resin having a photosensitive moiety that cleaves upon exposure to light, and a wavelength conversion material dispersed in the photosensitive resin. The photosensitive resin and the wavelength conversion material meet (i) to (iv): (i) The photosensitive moiety and the cleavage product of the photosensitive resin do not neutralize the wavelength conversion material; (ii) The photosensitive moiety and the cleavage product do not induce hydrolysis of the wavelength conversion material; (iii) The HOMOs of the photosensitive moiety and the cleavage product are lower than the LUMO of the wavelength conversion material; and (iv) The LUMOs of the photosensitive moiety and the cleavage product are higher than the HOMO of the wavelength conversion material. (Any combination of a chemically amplified photosensitive resin with an acidic photosensitive moiety or cleavage product and an acidic wavelength conversion material is excluded.Type: ApplicationFiled: June 12, 2015Publication date: May 4, 2017Inventors: Masakazu KAMURA, Akiko IWATA, Hiroshi NAKANO, Bai ZHANG, Hidetsugu MATSUKIYO, Shigeru AOMORI
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Publication number: 20160372528Abstract: A CCM substrate (1) includes as a light-emitting layer on a substrate (11) a red conversion layer (142), a green conversion layer (152), and a light scattering layer (162); a bank (13) which stands on the substrate (11), and partitions the light-emitting layer; and a light-transmission suppressing layer (10) which is formed on at least a portion of a side surface (13a) of the bank (13) which is a surface facing the light-emitting layer, and suppresses light transmission between the light-emitting layers (the red conversion layer (142), the green conversion layer (152), and the light scattering layer (162)) with the bank (13) interposed therebetween by causing the light to be reflected or scattered, in which the light-transmission suppressing layer (10) is comprising metal or metal salt, and the bank (13) has a group, an ion, or a molecule for immobilizing the metal or metal ion.Type: ApplicationFiled: December 5, 2014Publication date: December 22, 2016Inventors: Masakazu KAMURA, Shun UEKI, Akiko IWATA, Yuka IGAMI, Bai ZHANG, Shigeru AOMORI, Hidetsugu MATSUKIYO
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Publication number: 20150361378Abstract: A cleaning solution is used, in a transparent antireflective structure that has, on one surface thereof, a plurality of convexities formed at a period equal to or shorter than wavelength in a visible light range, and that prevents, at the one surface, reflection of light entering the one surface, to clean a concavity defining a region between adjacent two of the plural convexities, the cleaning solution having a pH of 10.00 or more.Type: ApplicationFiled: January 27, 2014Publication date: December 17, 2015Inventors: Kyohko MATSUURA, Yuhsuke TSUDA, Hidetsugu MATSUKIYO, Yuka UTSUMI, Akiyoshi FUJII, Takahiro NAKAHARA, Kiyoshi MINOURA, Miho YAMADA
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Publication number: 20150323711Abstract: A scatterer substrate includes at least a substrate; and a scatterer layer which is overlapped and disposed on one surface side of the substrate and has a plurality of non-light emitting particles that change a traveling direction of light, in which the scatterer layer is formed of at least the particles and gaps maintained between the particles and the substrate.Type: ApplicationFiled: November 6, 2013Publication date: November 12, 2015Inventors: Hisanori BESSHO, Hidetsugu MATSUKIYO, Mitsuhiro KODEN, Yoshimasa FUJITA, Osamu KAWASAKI
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Patent number: 7990039Abstract: A cold cathode fluorescent lamp for a backlight of a liquid crystal display device includes a light-transmitting glass tube in which a rare gas and mercury are sealed, and a phosphor film which is formed on an inner peripheral surface of the glass tube. The phosphor film is formed such that a phosphor suspension is formed by mixing phosphors into a suspension produced by strongly stirring a mixed solvent made of butyl acetate and nitrocellulose and by re-stirring the mixture, and the phosphor suspension is applied to the inner peripheral surface of the glass tube by coating.Type: GrantFiled: July 2, 2008Date of Patent: August 2, 2011Assignee: Hitachi Displays, Ltd.Inventors: Yuko Matsumoto, Hidetsugu Matsukiyo, Emiko Hayakawa
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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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Patent number: 7656081Abstract: To provide an imaging device that shows high resolution and high luminance and produces good-quality images, an imaging device includes phosphor layer having a thickness of 40 ?m or less and containing a phosphor having a composition represented by chemical formula: Y2?x?yTbxScySiO5, wherein “x” and “y” are atomic ratios and satisfy the following conditions: 0<x?1 and 0<y?1. The phosphor preferably has a strongest diffraction peak at diffraction angle 2? of 30.65° to 30.9° in X-ray diffraction for better properties. The phosphor can be prepared by firing a mixture of a compound containing Y, Sc, and Tb with a compound containing Si.Type: GrantFiled: May 30, 2006Date of Patent: February 2, 2010Assignee: Hitachi Displays, Ltd.Inventors: Shin Imamura, Masaaki Komatsu, Hidetsugu Matsukiyo, Masatoshi Shiiki
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Publication number: 20090009692Abstract: The present invention provides a liquid crystal display device which can enhance the brightness of a backlight of a liquid crystal display panel in such a manner that a luminous flux quantity of a cold cathode fluorescent lamp is increased. It is also an object of the present invention to provide a manufacturing method of such a liquid crystal display device.Type: ApplicationFiled: July 2, 2008Publication date: January 8, 2009Inventors: Yuko MATSUMOTO, Hidetsugu Matsukiyo, Emiko Hayakawa
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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