Patents by Inventor Jun Takeda

Jun Takeda 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).

  • Patent number: 11953775
    Abstract: An object of the present invention is to provide a polarizer, a method of producing a polarizer, a laminate, and an image display device which enable achievement of both the degree of alignment and light fastness. The polarizer of the present invention is a polarizer formed of a polarizer-forming composition which contains a liquid crystal compound and a dichroic material, in which the liquid crystal compound is a polymer compound having a smectic liquid crystallinity.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: April 9, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Wataru Hoshino, Hiroshi Matsuyama, Jun Takeda
  • Patent number: 11822107
    Abstract: The present invention provides a light absorption anisotropic film excellent in adhesiveness to an adjacent layer, and a laminate and an image display device, in which the light absorption anisotropic film is used. The light absorption anisotropic film is formed from a liquid crystal composition that contains a high-molecular weight liquid crystal compound and a dichroic substance, and is a light absorption anisotropic film in which regarding a signal derived from the dichroic substance detected by a time-of-flight secondary ion mass spectrometry, a relationship between a maximum intensity Imax in a thickness direction of a film and an intensity Isur on at least one surface of the film satisfies Expression (I-1) 2?Imax/Isur.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: November 21, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Naoki Koito, Takashi Yonemoto, Tetsuro Otsuka, Jun Takeda
  • Patent number: 11822108
    Abstract: The present invention provides a polarizing element which has an excellent antireflection function as being applied to an image display device; and a circularly polarizing plate and an image display device, each of which has a polarizing element. The polarizing element has an alignment film and an anisotropic light-absorbing film formed using a dichroic substance, in which a degree S of alignment of the anisotropic light-absorbing film is 0.92 or more, an average refractive index nave at a wavelength of 400 to 700 nm of the alignment film is 1.55 or more and less than 1.78, an in-plane refractive index anisotropy ?n at a wavelength of 550 nm of the alignment film is less than 0.10.
    Type: Grant
    Filed: June 29, 2022
    Date of Patent: November 21, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Yasukazu Kuwayama, Fumitake Mitobe, Yuzo Fujiki, Jun Takeda
  • Patent number: 11703708
    Abstract: An object of the present invention is to provide a polarizing element which has an excellent antireflection function in a case of being applied to an image display device; and a circularly polarizing plate and an image display device, each of which has the polarizing element. The polarizing element of an embodiment of the present invention is a polarizing element having an alignment film and an anisotropic light-absorbing film formed using a dichroic substance, in which the alignment film is a photoalignment film formed using a composition for forming a photoalignment film, including a photoactive compound having a polymerizable group and a photoreactive group, a degree S of alignment of the anisotropic light-absorbing film is 0.92 or more, and an average refractive index nave at a wavelength of 400 to 700 nm of the alignment film is 1.55 to 2.0.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: July 18, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Yasukazu Kuwayama, Jun Takeda, Naoki Koito
  • Patent number: 11656393
    Abstract: The present invention provides a laminate used in an image display device the laminate including an optically anisotropic layer, a light-absorbing anisotropic layer, a refractive index-adjusting layer, and an oxygen shielding layer in this order, where the light-absorbing anisotropic layer is formed of a composition containing dichroic azo coloring agent and liquid crystalline compounds, where the dichroic azo coloring agent compound is 10% to 30% by mass with respect to a mass of a total solid content of the light-absorbing anisotropic layer, a degree of alignment of the light-absorbing anisotropic layer is 0.92 or higher, the refractive index-adjusting layer is formed of a composition containing a crosslinkable group compound, and has an in-plane average refractive index of 1.55 to 1.70 (550 nm ?), and an angle formed by an in-plane slow axis of the optically anisotropic layer and an absorption axis of the light-absorbing anisotropic layer is 45°±10°.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: May 23, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Naoya Shibata, Jun Takeda, Yuta Fukushima, Ayako Muramatsu
  • Patent number: 11644714
    Abstract: An object of the present invention is to provide a polarizer, a method of producing a polarizer, a laminate, and an image display device which enable achievement of both the degree of alignment and heat resistance. The polarizer of the present invention is a polarizer formed of a polarizer-forming composition which contains a liquid crystal compound and a dichroic material, in which the liquid crystal compound has a smectic liquid crystallinity, and a phase transition temperature of the polarizer-forming composition from a smectic phase to an isotropic phase or a nematic phase is 120° C. or higher.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: May 9, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Wataru Hoshino, Hiroshi Matsuyama, Jun Takeda
  • Patent number: 11527704
    Abstract: An actuator includes a piezoelectric element, a vibration plate, and a support. The vibration plate has the piezoelectric element joined thereto and vibrates in accordance with displacement of the piezoelectric element. The support supports the vibration plate. A holder is disposed on the vibration plate. The holder is configured to join the vibration plate to an object of vibration. The vibration plate and the support are integrally molded.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: December 13, 2022
    Assignee: KYOCERA Corporation
    Inventor: Jun Takeda
  • Patent number: 11487055
    Abstract: An object of the present invention is to provide a laminate in which the coloring of reflected light is reduced. The laminate includes an optical film having a light absorption anisotropic film formed using a composition including a dichroic substance and having a transmittance of more than 50%, a ?/4 plate, and a metal electrode in this order, in which in a case where a degree (%) of polarization at a wavelength of ? of the optical film is defined as P(?) and a reflectance (%) at the wavelength of ? of the metal electrode is defined as R(?), a ratio of a minimum value of R/P to a maximum value of R/P at wavelengths of 450 nm, 550 nm, and 650 nm is more than 85%.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: November 1, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Naoya Nishimura, Fumitake Mitobe, Yuzo Fujiki, Jun Takeda
  • Publication number: 20220334299
    Abstract: The present invention provides a polarizing element which has an excellent antireflection function as being applied to an image display device; and a circularly polarizing plate and an image display device, each of which has a polarizing element. The polarizing element has an alignment film and an anisotropic light-absorbing film formed using a dichroic substance, in which a degree S of alignment of the anisotropic light-absorbing film is 0.92 or more, an average refractive index nave at a wavelength of 400 to 700 nm of the alignment film is 1.55 or more and less than 1.78, an in-plane refractive index anisotropy ?n at a wavelength of 550 nm of the alignment film is less than 0.10.
    Type: Application
    Filed: June 29, 2022
    Publication date: October 20, 2022
    Applicant: FUJIFILM Corporation
    Inventors: Yasukazu KUWAYAMA, Fumitake MITOBE, Yuzo FUJIKI, Jun TAKEDA
  • Patent number: 11415733
    Abstract: An object of the present invention is to provide a polarizing element which has an excellent antireflection function as being applied to an image display device; and a circularly polarizing plate and an image display device, each of which has the polarizing element. The polarizing element of an embodiment of the present invention has an alignment film and an anisotropic light-absorbing film formed using a dichroic substance, in which a degree S of alignment of the anisotropic light-absorbing film is 0.92 or more, and an average refractive index nave at a wavelength of 400 to 700 nm of the alignment film is 1.55 to 2.0.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: August 16, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Yasukazu Kuwayama, Fumitake Mitobe, Yuzo Fujiki, Jun Takeda
  • Publication number: 20220206202
    Abstract: Provided is a polarizing element which has an excellent antireflection function as being applied to an image display device; and a circularly polarizing plate and an image display device, each of which has the polarizing element. The polarizing element has an alignment film and an anisotropic light-absorbing film formed using a dichroic substance, in which a degree S of alignment of the anisotropic light-absorbing film is 0.92 or more, and an average refractive index nave at a wavelength of 400 to 700 nm of the alignment film is 1.55 to 2.0.
    Type: Application
    Filed: March 17, 2022
    Publication date: June 30, 2022
    Applicant: FUJIFILM Corporation
    Inventors: Yasukazu KUWAYAMA, Fumitake MITOBE, Yuzo FUJIKI, Jun TAKEDA
  • Patent number: 11318498
    Abstract: A unit and a tactile sensation providing apparatus which enable simplification of the assembly process of the apparatus are provided. The unit is provided with an actuator, a first fixing unit fixable to a base, a second fixing unit, and an elastic member configured to couple the first fixing unit and the second fixing unit together. The second fixing unit is fixable to a vibration object and coupled to the actuator.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: May 3, 2022
    Assignee: KYOCERA Corporation
    Inventors: Fumiaki Nakao, Jun Takeda, Shigeto Hattori, Kazushi Koike, Takeshi Shintani, Takeshi Yamori, Shun Hirooka
  • Patent number: 11286423
    Abstract: A laminate is provided having excellent adhesiveness between a light absorption anisotropic film and a barrier layer, a manufacturing method of the laminate, and an image display device using the laminate. A laminate having: a barrier layer A; and a light absorption anisotropic film B, in which the barrier layer A is adjacently provided on the light absorption anisotropic film B, a relationship between a highest content of a compound A1 contained in the barrier layer A and a highest content of a compound B1 contained in the light absorption anisotropic film B satisfies a relationship in which a value of distance calculated from Hansen solubility parameters and represented by Formula (I) is within a range of 0.0 to 5.0, and the light absorption anisotropic film B contains a component same as the compound A1. distance={4×(?D(B1)??D(A1))2+(?P(B1)??P(A1))2+(?H(B1)??H(A1))2}0.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: March 29, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Yumi Katou, Jun Takeda
  • Patent number: 11173694
    Abstract: An object of the present invention is to provide a laminate in which an excellent alignment property of a dichroic substance is maintained and which is excellent in both high-temperature durability and moisture-heat resistance, a manufacturing method of the laminate, and an image display device using the laminate. A laminate according to an embodiment of the present invention is a laminate having a transparent support, a light absorption anisotropic film, and a transparent resin layer in this order, in which the light absorption anisotropic film is a film containing a dichroic substance represented by a predetermined formula, and the transparent resin layer is a layer containing a polymer which has a hydrophilic group and does not have a glass transition temperature in a temperature range of 95° C. or lower.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: November 16, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Yuzo Fujiki, Yasukazu Kuwayama, Jun Takeda
  • Patent number: 11163363
    Abstract: A tactile sensation providing apparatus includes a panel, a tactile sensation providing unit that is attached to the panel and configured to vibrate the panel, and joint structures with respect to a housing. The joint structure is different between a first area in which the tactile sensation providing unit is arranged and a second area other than the first area.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: November 2, 2021
    Assignee: KYOCERA Corporation
    Inventor: Jun Takeda
  • Patent number: 11148404
    Abstract: An object of the present invention is to provide a laminate in which an excellent alignment property of a dichroic substance is maintained and which is excellent in both high-temperature durability and moisture-heat resistance, a manufacturing method of the laminate, and an image display device using the laminate. A laminate according to an embodiment of the present invention is a laminate having a transparent support, a light absorption anisotropic film, and a transparent resin layer in this order, in which the light absorption anisotropic film is a film containing a dichroic substance represented by a predetermined formula, and the transparent resin layer is a layer containing a polymer which has a hydrophilic group and does not have a glass transition temperature in a temperature range of 95° C. or lower.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: October 19, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Yuzo Fujiki, Yasukazu Kuwayama, Jun Takeda
  • Publication number: 20210302773
    Abstract: The present invention provides a light absorption anisotropic film excellent in adhesiveness to an adjacent layer, and a laminate and an image display device, in which the light absorption anisotropic film is used. The light absorption anisotropic film is formed from a liquid crystal composition that contains a high-molecular weight liquid crystal compound and a dichroic substance, and is a light absorption anisotropic film in which regarding a signal derived from the dichroic substance detected by a time-of-flight secondary ion mass spectrometry, a relationship between a maximum intensity Imax in a thickness direction of a film and an intensity Isur on at least one surface of the film satisfies Expression (I-1) 2?Imax/Isur.
    Type: Application
    Filed: June 3, 2021
    Publication date: September 30, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Naoki KOITO, Takashi YONEMOTO, Tetsuro OTSUKA, Jun TAKEDA
  • Patent number: 11052010
    Abstract: A training device suppresses unintended operation of an operation rod when executing an operation mode in which operation of the operation rod is controlled based on a force applied to the operation rod. The training device includes the operation rod, a motor, a force detector, a rotation information output sensor, a first command calculator, and a force corrector. The operation rod moves a limb. The motor operates the operation rod in a direction of degree of freedom. The force detector detects a force component and outputs a force component signal. The rotation information output sensor detects an operation position of the operation rod in a corresponding direction of degree of freedom. The force corrector calculates a corrected force component value based on operation positions of the operation rod and force component signal. The first command calculator calculates a first motor control command based on the corrected force component value.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: July 6, 2021
    Assignees: Murata Machinery, Ltd., Teijin Pharma Limited
    Inventors: Osamu Oshima, Hiroaki Ohmatsu, Fumi Fujita, Akihiro Maeda, Jun Takeda
  • Patent number: 11054691
    Abstract: The present invention provides a polarizing plate including a polarizer having a high transmittance, which can be suitably applied to a circularly polarizing plate with which a significant decrease in an antireflection ability is suppressed in a case where the circularly polarizing plate is disposed on a display element; a circularly polarizing plate; and a display device. The polarizing plate includes a polarizer and an adjacent layer in contact with the polarizer, in which a transmittance in the absorption axis direction of the polarizer is 4.0% or more, and an in-plane average refractive index of the adjacent layer satisfies a relationship of Formula (X), Formula (X): Refractive index in a transmission axis direction of the polarizer<In-plane average refractive index of the adjacent layer<Refractive index in the absorption axis direction of the polarizer.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: July 6, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Fumitake Mitobe, Jun Takeda, Naoya Nishimura, Yuzo Fujiki, Yumi Katou, Yasukazu Kuwayama
  • Publication number: 20210173135
    Abstract: The present invention provides a laminate used in an image display device the laminate including an optically anisotropic layer, a light-absorbing anisotropic layer, a refractive index-adjusting layer, and an oxygen shielding layer in this order, where the light-absorbing anisotropic layer is formed of a composition containing dichroic azo coloring agent and liquid crystalline compounds, where the dichroic azo coloring agent compound is 10% to 30% by mass with respect to a mass of a total solid content of the light-absorbing anisotropic layer, a degree of alignment of the light-absorbing anisotropic layer is 0.92 or higher, the refractive index-adjusting layer is formed of a composition containing a crosslinkable group compound, and has an in-plane average refractive index of 1.55 to 1.70 (550 nm ?), and an angle formed by an in-plane slow axis of the optically anisotropic layer and an absorption axis of the light-absorbing anisotropic layer is 45°±10°.
    Type: Application
    Filed: February 17, 2021
    Publication date: June 10, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Naoya SHIBATA, Jun TAKEDA, Yuta FUKUSHIMA, Ayako MURAMATSU