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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Publication number: 20060197462Abstract: 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: ApplicationFiled: February 24, 2006Publication date: September 7, 2006Inventors: Norikazu Uchiyama, Masaaki Okunaka, Masahiro Nishizawa, Hidetsugu Matsukiyo, Yuko Matsumoto
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Patent number: 7099091Abstract: In a display device comprising an optical region containing a plurality of pigment grains utilized for wavelength selection, anti-reflection, improvement of the light emitting performance and the like, dyestuff molecules utilized for forming the pigment grains to be dissolved in a solvent in which the dyestuff molecules are insoluble originally are chemically modified, and then the solubility of the modified dyestuff molecules in the solvent is reduced by energy transfer thereto to aggregate the dyestuff molecules, so that grain sizes of pigment grains are suitably controlled for the optical region in accordance with its use.Type: GrantFiled: November 26, 2003Date of Patent: August 29, 2006Assignee: Hitachi Displays, Ltd.Inventors: Maki Taniguchi, Tomoji Oishi, Masahiro Nishizawa, Shinichi Kato, Norikazu Uchiyama
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Patent number: 6992425Abstract: A high definition display apparatus having a wavelength selective absorption effect and an anti-static and anti-reflection effect is provided by thin films having a low resistance and a high refractive index. The high definition display apparatus has an anti-static and anti-reflection film composed of laminated oxide or metallic thin films, wherein at least three layers of oxide or metallic films having different reflectance from each other are laminated onto the front surf ace of the display apparatus, and the laminated films are composed such that an absorbing film containing coloring material is arranged under a high reflectance film as seen from the outer surface of the laminated films.Type: GrantFiled: October 7, 1999Date of Patent: January 31, 2006Assignees: Hitachi, Ltd., Hitachi-Device Engineering Co., Ltd.Inventors: Takao Ishikawa, Daigoro Kamoto, Tomoji Oishi, Ken Takahashi, Norikazu Uchiyama, Kiyoshi Miura, Masahiro Nishizawa, Toshio Tojo
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Publication number: 20050280349Abstract: An image display device includes phosphor layers which are formed on an inner surface of a light transmitting face plate, a black matrix film which is formed on the inner surface of the face plate in a state that the black matrix film defines the phosphor layers into phosphor layers of respective colors, and electron beam sources which are arranged in the inside of the evacuated envelope in a state that the electron beam sources face the phosphor layers in an opposed manner and irradiates electron beams to the phosphor layers. An area occupying ratio of the black matrix film as viewed from an image display screen side of the face plate is set within the range of 60% to 95%.Type: ApplicationFiled: June 14, 2005Publication date: December 22, 2005Inventors: Masaki Nishikawa, Masahiro Nishizawa, Hidetsugu Matsukiyo
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Publication number: 20050119377Abstract: A colored resin composition for laser welding which comprises: (A) a polybutylene terephthalate based resin comprising polybutylene terephthalate or polybutylene terephthalate and a polybutylene terephthalate copolymer, (B) at least one kind of resin selected from polycarbonate resins, styrene based resins and polyethylene terephthalate resins, and (C) two or more kinds of organic pigments, wherein the resin (B) accounts for 1 to 50% by weight of the total amount of the polybutylene terephthalate based resin (A) and the resin (B), the pigment (C) is included in an amount of 0.02 to 0.5 parts by weight per 100 parts by weight of the total amount of the polybutylene terephthalate based resin (A) and the resin (B), laser beam transmittance in the near infrared radiation region of the wavelength of 800 nm to 1100 nm is 10% or greater when it is measured with a sample thickness of 3 mm, and L value which indicates the luminosity is less than 50.Type: ApplicationFiled: December 1, 2004Publication date: June 2, 2005Inventors: Tomo Ishii, Shunji Sato, Masahiro Nishizawa
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Publication number: 20050013763Abstract: 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: May 11, 2004Publication date: January 20, 2005Applicant: JOHNSONDIVERSEY, INC.Inventors: Andrew Bober, Charles Crawford, Dale Grinstead, Masahiro Nishizawa, Kenneth Roach, Carol Rouillard, James Whitehead, William Wright
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Patent number: 6791256Abstract: A display device includes a first substrate, a second substrate disposed to face the first substrate, plural pixels disposed in a display area on an inner surface of the first substrate, a rubber member disposed between the first and second substrates to surround the display area, and sealing the display area from an ambient atmosphere, and an adhesive layer sealing together the first and second substrates along peripheries thereof. The adhesive layer is derived from a sol-gel solution.Type: GrantFiled: February 11, 2003Date of Patent: September 14, 2004Assignee: Hitachi, Ltd.Inventors: Masahiro Nishizawa, Noriharu Matsudate, Norikazu Uchiyama, Maki Taniguchi
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Publication number: 20040169936Abstract: In a display device comprising a optical region containing a plurality of pigment grains utilized for wavelength selection, anti-reflection, improvement for light emitting performance or else, the present invention chemically modifies dyestuff molecules utilized for forming the pigment grains to be dissolved in a solvent in which the dyestuff molecules are insoluble originally, and then reduces solubility of the modified dyestuff molecules in the solvent by energy transfer thereto to aggregate the dyestuff molecules, so that grain sizes of pigment grains are suitably controlled for the optical region in accordance with its use.Type: ApplicationFiled: November 26, 2003Publication date: September 2, 2004Inventors: Maki Taniguchi, Tomoji Oishi, Masahiro Nishizawa, Shinichi Kato, Norikazu Uchiyama
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Patent number: 6771017Abstract: A cathode ray tube includes a film which is formed on an outer surface of a panel portion. The film is comprised of a first particles which become transparent due to the oxidation and a second particles which are chemically and physically stable and have the light absorbing ability and the conductivity. A number of the transparent first particles is gradually increased toward a peripheral portion from the center portion of the panel portion.Type: GrantFiled: January 8, 2002Date of Patent: August 3, 2004Assignee: Hitachi, Ltd.Inventors: Masahiro Nishizawa, Norikazu Uchiyama, Maki Taniguchi, Toshio Tojo, Tomoji Oishi
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Patent number: 6642647Abstract: A color cathode ray tube is generally constituted from a panel section for visually displaying images and a neck portion containing therein an electron gun assembly plus a funnel section for coupling the panel section and the neck portion together. The panel comprises on its outer surface a colored film that includes a coloring matter or pigment for color-selective absorption of light rays and fine or micro-particles with electricity-resistant property for letting the pigment scatter or disperse. With said arrangement, it is possible to improve the light absorbability of the colored film, thereby enabling provision of the intended cathode ray tube with improved contrast.Type: GrantFiled: January 25, 2001Date of Patent: November 4, 2003Assignee: Hitachi, Ltd.Inventors: Maki Taniguchi, Masahiro Nishizawa, Norikazu Uchiyama, Toshio Tojo
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Publication number: 20030155861Abstract: A display device includes a first substrate, a second substrate disposed to face the first substrate, plural pixels disposed in a display area on an inner surface of the first substrate, a rubber member disposed between the first and second substrates to surround the display area, and sealing the display area from an ambient atmosphere, and an adhesive layer sealing together the first and second substrates along peripheries thereof. The adhesive layer is derived from a sol-gel solution.Type: ApplicationFiled: February 11, 2003Publication date: August 21, 2003Applicant: Hitachi, Ltd.Inventors: Masahiro Nishizawa, Noriharu Matsudate, Norikazu Uchiyama, Maki Taniguchi
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Patent number: 6555953Abstract: A color cathode ray tube of the present invention includes an evacuated envelop that is structured from a panel having a phosphor screen on its inner surface, a neck portion containing therein an electron gun assembly, and a cone-shaped section called the funnel for integrally coupling the panel and the neck together, wherein when the main scanning direction of a display screen formed of the panel is defined as an X direction whereas a direction at right angles to the main scan direction is as a Y-direction, an equivalent radius of curvature Rxo of an outer surface of the panel in the X direction is at least 2.6 times greater than an equivalent curvature radius Rxi of the inner surface while forming on the inner panel surface an inside light absorption layer that is comprised of pigments as its principal component.Type: GrantFiled: July 19, 2000Date of Patent: April 29, 2003Assignees: Hitachi Ltd., Hitachi Device Engineering Co.Inventors: Masahiro Nishizawa, Hiroshi Yoshioka, Yoshiyuki Odaka, Toshio Tojo
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Publication number: 20030052587Abstract: A large number of micropores are formed in a surface of a metal base body of a shadow mask provided to a color cathode ray tube and a surface film is formed such that the surface film impregnates these micropores and covers the metal base body. Due to such a constitution, it is possible to realize a color cathode ray tube having a press mask of a large radius of curvature which can reduce the thermal deformation such as doming.Type: ApplicationFiled: August 14, 2002Publication date: March 20, 2003Inventors: Masahiro Nishizawa, Maki Taniguchi, Noriharu Matsudate
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Patent number: 6465947Abstract: A panel has a flat external surface and has a curvature on an inner surface thereof. A coating having light absorption characteristics is formed on the external surface of the panel. To the top of the coating, a film which has light absorbing characteristics and contains an adhesive is adhered. The light absorption by the coating is large at the central portion of the panel and is small at the peripheral portion of the panel. The light absorption characteristics of the film is approximately uniform on the entire surface of the panel. Due to such a constitution, a color picture tube having a flat external surface, the least brightness difference and an excellent contrast can be realized.Type: GrantFiled: January 28, 2000Date of Patent: October 15, 2002Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.Inventors: Toshio Tojo, Nobuhiko Hosotani, Masahiro Nishizawa, Norikazu Uchiyama, Maki Taniguchi
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Publication number: 20020145377Abstract: A cathode ray tube includes a film which is formed on an outer surface of a panel portion. The film is comprised of a first particles which become transparent due to the oxidation and a second particles which are chemically and physically stable and have the light absorbing ability and the conductivity. A number of the transparent first particles is gradually increased toward a peripheral portion from the center portion of the panel portion.Type: ApplicationFiled: January 8, 2002Publication date: October 10, 2002Inventors: Masahiro Nishizawa, Norikazu Uchiyama, Maki Taniguchi, Toshio Tojo, Tomoji Oishi
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Publication number: 20020135291Abstract: A color cathode ray tube is generally constituted from a panel section for visually displaying images and a neck portion containing therein an electron gun assembly plus a funnel section for coupling the panel section and the neck portion together. The panel comprises on its outer surface a colored film that includes a coloring matter or pigment for color-selective absorption of light rays and fine or micro-particles with electricity-resistant property for letting the pigment scatter or disperse.Type: ApplicationFiled: January 25, 2001Publication date: September 26, 2002Inventors: Maki Taniguchi, Masahiro Nishizawa, Norikazu Uchiyama, Toshio Tojo
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Patent number: 6424086Abstract: A color cathode-ray tube providing a nonglare effect which can be regenerated without degradation of its nonglare function and which can be inexpensively formed. A light scattering film composed of metal containing compound micro-particles having a high index of refraction and a particle size of 0.1 &mgr;m to 2 &mgr;m is formed in contact with the internal surface of a faceplate of the color cathode-ray tube, and a black matrix having a multiplicity of holes is formed on the light scattering film. A red phosphor layer, a green phosphor layer and a blue phosphor-layer are formed in the holes of the black matrix on the light scattering film in such a manner that the phosphor layers of red, green and blue are disposed cyclically in that order. External light incident on the faceplate is partly reflected by the external surface of the faceplate, and the remainder of the external light passes through the faceplate and is made incident on the light scattering film.Type: GrantFiled: October 26, 1995Date of Patent: July 23, 2002Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.Inventors: Yoshiyuki Odaka, Masahiro Nishizawa, Toshimasa Ishigaki
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Publication number: 20020043922Abstract: A display device having a surface treating film formed on the outer surface of a substrate of the display device, said surface treating film having a property of changing light transmittance or refractive index by light or UV rays, and/or containing a compound which can be deposited by irradiation with light, shows excellent antireflective antistatic properties and low surface resistance, and can be applied to flat cathode-ray tubes.Type: ApplicationFiled: September 28, 2001Publication date: April 18, 2002Applicant: Hitachi, Ltd.Inventors: Tomoji Oishi, Masahiro Nishizawa, Norikazu Uchiyama, Maki Taniguchi, Toshio Tojo
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Patent number: 6359380Abstract: In a color cathode ray tube having a vacuum vessel that comprises a panel, a neck for housing an electron gun therein, and a funnel for connecting the panel and the neck, in which the inner surface of the panel glass is coated with a phosphor layer in different colors to give a display screen; the panel glass contains ions capable of selectively absorbing light within the range of visible rays, and its outer surface is coated with an electric conductive surface film.Type: GrantFiled: March 1, 1999Date of Patent: March 19, 2002Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., LtdInventors: Masahiro Nishizawa, Toshio Tojo, Norikazu Uchiyama, Maki Ito, Kiyoshi Miura, Hidetsugu Matsukiyo, Tomoji Ohishi, Daigoro Kamoto
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Patent number: 6351062Abstract: A cathode ray tube with a vacuum enclosure, including a glass panel having an inner face coated with a phosphor film to form a screen, a neck portion housing an electron gun, and a funnel portion connecting the glass panel and the neck portion. A high refractive index film made of electrically conductive metal oxide or metal (e.g., precious metal) particles and having a refractive index of 1.6 to 2.2, and a low refractive index film having a refractive index of 1.3 to 1.58, are formed on the outer face of the glass panel. The high refractive index film is sandwiched between the outer face of the glass panel and the low refractive index film and an average roughness of an outer surface of said low refractive index film is less than an average roughness of an unevenness of an interface between the high refractive index film and the low refractive index film.Type: GrantFiled: September 22, 2000Date of Patent: February 26, 2002Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.Inventors: Masahiro Nishizawa, Norikazu Uchiyama, Toshio Tojo