Patents by Inventor Taro Hashizume
Taro Hashizume 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: 20230276683Abstract: Provided is a bendable organic EL display device in which change in tint at a bending portion before and after bending is small. The organic electroluminescent display device is a bendable organic electroluminescent display device including a circularly polarizing plate and a bendable organic EL display panel, in which the circularly polarizing plate includes a polarizer and a retardation layer from a viewing side, the retardation layer includes a first optically anisotropic layer formed by fixing a liquid crystal compound twist-aligned along a helical axis extending in a thickness direction, and the first optically anisotropic layer satisfies a predetermined requirement.Type: ApplicationFiled: February 14, 2023Publication date: August 31, 2023Applicant: FUJIFILM CorporationInventors: Toshihiro KONISHI, Taro HASHIZUME
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Patent number: 9534727Abstract: A cholesteric liquid crystal mixture containing a compound represented by Z1—Y1-A1-Y3-M1-Y4-A2-Y2—Z2, a compound represented by Z3—Y5-A3-Y7-M2-P, and a tri- or higher functional polymerizable monomer suppresses deposition of a liquid crystal at the time of forming a film, exhibits a wide characteristic reflection bandwidth of the film. Z1 to Z3 represent a polymerizable group; A1 to A3 represent an alkylene spacer having a chain of 1 to 30 atoms; M1 and M2 represent (-T1-Y8)n-T2-; n indicates a natural number; T1 and T2 represent a hydrocarbon or heterocyclic ring; Y1 to Y5, Y7 and Y8 represent a single bond, —O—, —CO—, —O—CO—, —CO—O— or —O—CO—O—; and P represents a hydrogen atom or an alkyl group.Type: GrantFiled: September 26, 2014Date of Patent: January 3, 2017Assignee: FUJIFILM CorporationInventors: Tomoki Tasaka, Masaomi Kimura, Masao Nakajima, Taro Hashizume
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Publication number: 20150010761Abstract: A cholesteric liquid crystal mixture containing a compound represented by Z1-Y1-A1-Y3-M1-Y4-A2-Y2-Z2, a compound represented by Z3-Y5-A3-Y7-M2-P, and a tri- or higher functional polymerizable monomer suppresses deposition of a liquid crystal at the time of forming a film, exhibits a wide characteristic reflection bandwidth of the film. Z1 to Z3 represent a polymerizable group; A1 to A3 represent an alkylene spacer having a chain of 1 to 30 atoms; M1 and M2 represent (-T1-Y8)n-T2-; n indicates a natural number; T1 and T2 represent a hydrocarbon or heterocyclic ring; Y1 to Y5, Y7 and Y8 represent a single bond, —O—, —CO—, —O—CO—, —CO—O— or —O—CO—O—; and P represents a hydrogen atom or an alkyl group.Type: ApplicationFiled: September 26, 2014Publication date: January 8, 2015Applicant: FUJIFILM CorporationInventors: Tomoki TASAKA, Masaomi KIMURA, Masao NAKAJIMA, Taro HASHIZUME
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Patent number: 8808824Abstract: An aspect of the present invention relates to an optical information recording medium comprising a recording layer on a surface of a support, wherein the surface of the support has pregrooves with a track pitch ranging from 50 to 500 nm, the recording layer comprises an azo metal complex dye being a complex of six azo dyes and seven transition metal ions. A further aspect of the present invention relates to a method of recording information onto the optical information recording medium and a novel azo metal complex dye.Type: GrantFiled: September 25, 2009Date of Patent: August 19, 2014Assignee: FUJIFILM CorporationInventors: Kousuke Watanabe, Taisuke Fujimoto, Tetsuya Watanabe, Masashi Ogiyama, Seiji Hatano, Taro Hashizume, Hirokazu Hashimoto
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Patent number: 8605241Abstract: A phase compensator having a biaxial birefringent component (40) is fabricated by oblique deposition of an inorganic material on a base plate (69). A polar angle of an evaporation path of the inorganic material is controlled in a predetermined angular range to a surface normal of the base plate (69). In the oblique deposition process, the base plate (69) is oscillated in a horizontal direction. The phase compensator is arranged such that its slow axis (L4) is perpendicular to a slow axis (L3) of tilt components (24a, 24b) in a liquid crystal panel (20), and that an index ellipsoid (41) is tilted in an opposite direction to a tilt direction of the tilt components (24a, 24b).Type: GrantFiled: September 18, 2008Date of Patent: December 10, 2013Assignee: FUJIFILM CorporationInventors: Kenichi Nakagawa, Hiroki Takahashi, Taro Hashizume
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Patent number: 8394481Abstract: A WORM-type recording layer in an optical information recording medium contains at least one azo-metal complex dye derived from a metal ion and a compound represented by the following general formula (1-1) or (1-2): wherein Q represents a carbocyclic group or a heterocyclic group, and R6 to R8 independently represent a hydrogen atom or a substituent. The compound represented by the general formula (1-1) or (1-2) has a dissociative hydrogen atom in Q, and the dissociative hydrogen atom in Q and the hydrogen atom in the —NH— group marked with asterisk * are eliminated from the compound, so that the residue is bonded to the metal ion to generate the azo-metal complex dye. The azo-metal complex dye may contain a component other than the metal ion and the compound represented by the general formula (1-1) or (1-2).Type: GrantFiled: September 28, 2007Date of Patent: March 12, 2013Assignee: FUJIFILM CorporationInventors: Kousuke Watanabe, Taro Hashizume, Kazutoshi Katayama
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Patent number: 8092890Abstract: The optical information recording medium comprises a recording layer on a surface of a support. The surface of the support has pregrooves with a track pitch ranging from 50 to 500 nm, the recording layer comprises an azo metal complex dye, the azo metal complex dye is a complex of one or more azo dye and transition metal ions of which number is equal to or greater than the number of the azo dye. The azo metal complex dye comprises two or more transition metal ions per molecule, and in a molecule of the azo metal complex dye.Type: GrantFiled: April 11, 2008Date of Patent: January 10, 2012Assignee: FUJIFILM CorporationInventors: Kousuke Watanabe, Tetsuya Watanabe, Taro Hashizume, Masashi Ogiyama
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Publication number: 20110202942Abstract: An aspect of the present invention relates to an optical information recording medium comprising a recording layer, wherein the recording layer comprises a cationic dye and a polynuclear azo metal complex dye comprising an azo dye and a metal ion, and a method of recording information comprising recording information on the recording layer comprised in the optical recording medium, and conducting the recording by irradiation of a laser beam having a wavelength of equal to or shorter than 440 nm onto the optical information recording medium. Another aspect of the present invention relates to a photo sensitizer.Type: ApplicationFiled: October 9, 2009Publication date: August 18, 2011Applicant: FUJIFILM CORPORATIONInventors: Taisuke Fujimoto, Kousuke Watanabe, Taro Hashizume
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Publication number: 20110177281Abstract: An aspect of the present invention relates to an optical information recording medium comprising a recording layer on a surface of a support, wherein the surface of the support has pregrooves with a track pitch ranging from 50 to 500 nm, the recording layer comprises an azo metal complex dye being a complex of six azo dyes and seven transition metal ions. A further aspect of the present invention relates to a method of recording information onto the optical information recording medium and a novel azo metal complex dye.Type: ApplicationFiled: September 25, 2009Publication date: July 21, 2011Applicant: FUJIFILM CORPORATIONInventors: Kousuke Watanabe, Taisuke Fujimoto, Tetsuya Watanabe, Masashi Ogiyama, Seiji Hatano, Taro Hashizume, Hirokazu Hashimoto
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Publication number: 20100231835Abstract: A phase compensator having a biaxial birefringent component (40) is fabricated by oblique deposition of an inorganic material on a base plate (69). A polar angle of an evaporation path of the inorganic material is controlled in a predetermined angular range to a surface normal of the base plate (69). In the oblique deposition process, the base plate (69) is oscillated in a horizontal direction. The phase compensator is arranged such that its slow axis (L4) is perpendicular to a slow axis (L3) of tilt components (24a, 24b) in a liquid crystal panel (20), and that an index ellipsoid (41) is tilted in an opposite direction to a tilt direction of the tilt components (24a, 24b).Type: ApplicationFiled: September 18, 2008Publication date: September 16, 2010Applicant: Fujifilm CorporationInventors: Kenichi Nakagawa, Hiroki Takahashi, Taro Hashizume
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Publication number: 20100074082Abstract: A WORM-type recording layer in an optical information recording medium contains at least one azo-metal complex dye derived from a metal ion and a compound represented by the following general formula (1-1) or (1-2): wherein Q represents a carbocyclic group or a heterocyclic group, and R6 to R8 independently represent a hydrogen atom or a substituent. The compound represented by the general formula (1-1) or (1-2) has a dissociative hydrogen atom in Q, and the dissociative hydrogen atom in Q and the hydrogen atom in the —NH— group marked with asterisk * are eliminated from the compound, so that the residue is bonded to the metal ion to generate the azo-metal complex dye. The azo-metal complex dye may contain a component other than the metal ion and the compound represented by the general formula (1-1) or (1-2).Type: ApplicationFiled: September 28, 2007Publication date: March 25, 2010Applicant: Fujifilm CorporationInventors: Kousuke Watanabe, Taro Hashizume, Kazutoshi Katayama
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Publication number: 20100002569Abstract: An aspect of the present invention relates to an optical information recording medium comprising a recording layer on a surface of a support, wherein the surface of the support has pregrooves with a track pitch ranging from 50 to 500 nm, the recording layer comprises an azo metal complex dye in the form of a complex of at least one azo dye denoted by general formula (1) and at least one metal ion: wherein, in general formula (1), Q1 denotes an atom group forming a ring with two adjacent carbon atoms and a carbon atom bonded to —N?N-group, G1 denotes a heterocyclic group or carbocyclic group, and R1 denotes an alkyl group, alkenyl group, alkynyl group, aryl group, or heterocyclic group.Type: ApplicationFiled: June 25, 2009Publication date: January 7, 2010Applicant: FUJIFILM CorporationInventors: Hisato NAGASE, Tetsuya Watanabe, Taro Hashizume
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Publication number: 20090290108Abstract: A retardation compensation element (56) is composed of a C-plate (85) and an O-plate (86). The O-plate (86) is a biaxial birefringent medium made of an obliquely deposited organic material. A fast axis (L6) of the O-plate (86) is parallel to the orthographic projection of a deposition direction (96) onto the surface of the O-plate (86). Between a liquid crystal display device (51) and a polarization beam splitter (48), the O-plate (86) is arranged such that the fast axis (L6) and a tilt direction (L8) of liquid crystal molecules (75) are parallel to each other, and that the deposition direction (96) and the tilt direction (L8) face the opposite direction with respect to a Z2 axis. The C-plate (86) is disposed together with the O-plate (85) between the liquid crystal display device (51) and the polarization beam splitter (48).Type: ApplicationFiled: December 26, 2007Publication date: November 26, 2009Applicant: FUJIFILM CORPORATIONInventors: Kenichi Nakagawa, Taro Hashizume, Hiroki Takahashi
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Publication number: 20090290469Abstract: An aspect of the present invention relates to an optical information recording medium comprising a recording layer on a surface of a support, wherein the recording layer comprises at least one azo metal complex dye that is a complex of at least one azo dye and at least one metal ion, and the azo metal complex dye comprises equal to or more than four bonds, each of the bonds being formed between one azo dye molecule and one metal ion.Type: ApplicationFiled: May 21, 2009Publication date: November 26, 2009Applicant: FUJIFILM CorporationInventors: Kousuke Watanabe, Tetsuya Watanabe, Taro Hashizume
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Publication number: 20080310293Abstract: The optical information recording medium comprises a reflective layer, a recording layer, a barrier layer, and a cover layer in this order on a surface of a support, and a layer formed by curing an ultraviolet radiation-curable composition between the barrier layer and the cover layer, the layer having a glass transition temperature of equal to or lower than 25° C. The surface of the support has pregrooves with a track pitch of 50 to 500 nm. The recording layer ranges in thickness from 1 to 100 nm on the lands and from 5 to 150 nm on the grooves, and comprises at least one azo dye compound selected from the group consisting of an azo compound and an azo metal complex compound comprising an azo compound and a metal ion or metal oxide ion, with an attenuation coefficient of 0.15 to 0.3 at a wavelength of 405 nm.Type: ApplicationFiled: May 30, 2008Publication date: December 18, 2008Applicant: FUJIFILM CorporationInventors: Kousuke WATANABE, Kazutoshi Katayama, Keita Takahashi, Taro Hashizume, Kiyoshi Horimai
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Publication number: 20080254252Abstract: The optical information recording medium comprises a recording layer on a surface of a support. The surface of the support has pregrooves with a track pitch ranging from 50 to 500 nm, the recording layer comprises an azo metal complex dye, the azo metal complex dye is a complex of one or more azo dye and transition metal ions of which number is equal to or greater than the number of the azo dye. The azo metal complex dye comprises two or more transition metal ions per molecule, and in a molecule of the azo metal complex dye.Type: ApplicationFiled: April 11, 2008Publication date: October 16, 2008Applicant: FUJIFILM CorporationInventors: Kousuke Watanabe, Tetsuya Watanabe, Taro Hashizume, Masashi Ogiyama
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Publication number: 20080081286Abstract: An optical information recording medium having a recording layer on which information can be recorded by irradiation with a laser light having a wavelength of 440 nm or less, wherein the recording layer contains at least one azo-metal complex dye derived from a metal ion or a metal oxide ion and an azo dye represented by the following general formula (1-1) or (1-2): wherein Q represents a carbocyclic group or a heterocyclic group, and R6 to R8 independently represent a hydrogen atom or a substituent.Type: ApplicationFiled: June 6, 2007Publication date: April 3, 2008Applicant: FUJIFILM CorporationInventors: Kousuke Watanabe, Kazutoshi Katayama, Taro Hashizume
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Publication number: 20080081285Abstract: An optical information recording medium having a WORM-type recording layer on which information can be recorded by irradiation with a laser light having a wavelength of 440 nm or less, wherein the WORM-type recording layer contains at least one azo-metal complex dye derived from a metal ion (or a metal oxide ion) and an azo dye represented by the following structural formula (I-1) or (I-2). In the structural formulae (I-1) and (I-2), Q represents a carbocyclic group or a heterocyclic group, Q2 and Q3 each represent an atomic group forming a nitrogen-containing heterocycle, and R2 represents a substituent.Type: ApplicationFiled: September 28, 2007Publication date: April 3, 2008Applicant: FUJIFILM CorporationInventors: Kousuke WATANABE, Kazutoshi KATAYAMA, Taro HASHIZUME