Patents by Inventor Aiko Yoshida

Aiko Yoshida 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).

  • Publication number: 20210139778
    Abstract: An object of the present invention is to provide a polymerizable liquid crystal composition used for formation of an optically anisotropic film having excellent moisture-heat resistance and an excellent surface condition, an optically anisotropic film, an optical film, a polarizing plate, and an image display device. The polymerizable liquid crystal composition of an embodiment of the present invention is a polymerizable liquid crystal composition containing a polymerizable liquid crystal compound and a compound represented by Formula (1): L1-SP1-(E3-A1)m-E1-G1-C(?O)—O—C(?O)-G2-E2-(A2-E4)n-SP2-L2, in which a content of the compound represented by Formula (1) is 0.01 to 5 parts by mass with respect to 100 parts by mass of the polymerizable liquid crystal compound.
    Type: Application
    Filed: January 21, 2021
    Publication date: May 13, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Daisuke HAYASHI, Aiko YOSHIDA, Toru WATANABE, Keita TAKAHASHI
  • Publication number: 20200369960
    Abstract: An object of the present invention is to provide an optically anisotropic film which has excellent moisture-heat resistance and can have a reduction in the thickness, an optical film, a polarizing plate, and an image display device. The optically anisotropic film of the embodiment of the present invention is an optically anisotropic film obtained by polymerizing a polymerizable liquid crystal composition, in which the polymerizable liquid crystal composition contains a polymerizable liquid crystal compound represented by Formula (1) and a polymerizable liquid crystal compound represented by Formula (2), and the optically anisotropic film satisfies Formula (3) or (4), and has a degree of alignment as measured by Raman spectroscopy of 0.4 or more.
    Type: Application
    Filed: August 12, 2020
    Publication date: November 26, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Ayako MURAMATSU, Ryo SATAKE, Mayumi NOJIRI, Aiko YOSHIDA, Keita TAKAHASHI
  • Publication number: 20200369959
    Abstract: A polymerizable liquid crystal composition having excellent solubility, used for formation of an optically anisotropic film having excellent durability. The polymerizable liquid crystal composition contains a polymerizable liquid crystal compound P1 represented by Formula (1): A-Ar-A ? ? ? , a polymerizable liquid crystal compound P2 represented by Formula (2): A-Ar-B ? ? ? , and a polymerizable liquid crystal compound P3 represented by Formula (3): B—Ar-B ? ? ? . In Formulae (1) and (2), A's represent predetermined side chains, all of which exhibit the same C log P value, and in Formulae (2) and (3), B's represent predetermined side chains, all of which exhibit the same C log P value. It should be noted that A and B represent side chains having C log P values different from each other, in which the C log P value of A is larger than the C log P value of B and the C log P value of at least one of A or B is 3.3 or more.
    Type: Application
    Filed: August 7, 2020
    Publication date: November 26, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Daisuke HAYASHI, Satoshi SHIMAMURA, Aiko YOSHIDA, Keita TAKAHASHI
  • Publication number: 20200369961
    Abstract: Provided is an optical film having an excellent film contrast and improved moisture-heat resistance, a polarizing plate, and an image display device. The optical film has an optically anisotropic film obtained by polymerizing a polymerizable liquid crystal composition, and a photo-alignment film, in which the polymerizable liquid crystal composition contains a polymerizable liquid crystal compound represented by Formula (1): L1-SP1-E1-Cy2-Cy1-D1-Ar1-D2-Cy3-Cy4-E2-SP2-L2 and the optically anisotropic film satisfies Formula (I): Re(450)/Re(550)<1 or Formula (II): Rth(450)/Rth(550)<1 and exhibits a diffraction peak derived from a periodic structure in X-ray diffraction measurement.
    Type: Application
    Filed: August 12, 2020
    Publication date: November 26, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Ayako MURAMATSU, Ryo SATAKE, Mayumi NOJIRI, Aiko YOSHIDA, Keita TAKAHASHI, Toshikazu SUMI
  • Publication number: 20200363682
    Abstract: An image display device which suppresses destruction of an image display panel due to static electricity carried by a phase difference film, and has excellent adhesiveness between the phase difference film and the image display panel even in a moisture-heat environment, and a circularly polarizing plate with a photosensitive adhesive. The image display device includes a circularly polarizing plate having a linear polarizer and a phase difference film, and an image display panel in this order from a viewing side, in which the phase difference film and the image display panel are bonded by a pressure-sensitive adhesive, the phase difference film has an optically anisotropic layer obtained by polymerizing a polymerizable liquid crystal composition containing at least one kind of polymerizable liquid crystal compound having a predetermined structure, and the pressure-sensitive adhesive contains a polymer having an acid value of 1 to 30 mgKOH/g and an antistatic agent.
    Type: Application
    Filed: August 7, 2020
    Publication date: November 19, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Mayumi NOJIRI, Satoshi SHIMAMURA, Ryo SATAKE, Aiko YOSHIDA
  • Publication number: 20200362244
    Abstract: A polymerizable liquid crystal composition used for formation of an optically anisotropic film retaining good reciprocal wavelength dispersibility and having an excellent surface condition, an optically anisotropic film, an optical film, a polarizing plate, and an image display device. The polymerizable liquid crystal composition contains a polymerizable liquid crystal compound represented by Formula (I): L1-SP1-A1-D3-G1-D1-Ar-D2-G2-D4-A2-SP2-L2 and a polymerizable compound represented by Formula (II): L5-SP5-D9-C(?O)-Cy1-Cy2-C(?O)-D7-A5-D8-(A6-D10)n-SP6-L6 and not corresponding to Formula (I).
    Type: Application
    Filed: August 5, 2020
    Publication date: November 19, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Satoshi SHIMAMURA, Aiko YOSHIDA, Keita TAKAHASHI, Ryo SATAKE, Mayumi NOJIRI
  • Patent number: 10782567
    Abstract: An object of the present invention is to provide an optical film having an optically-anisotropic layer having excellent durability, a polarizing plate and an image display device in which the optical film is used, a polymerizable compound used in the optical film, and a method for manufacturing a 1,4-cyclohexanedicarboxylic acid monoaryl ester. The optical film of the present invention is an optical film having at least an optically-anisotropic layer, in which the optically-anisotropic layer is a layer obtained by polymerizing a polymerizable liquid crystal composition containing a polymerizable compound which has a specific structure, a liquid crystal compound which has a specific structure, and a polymerization initiator.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: September 22, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Keita Takahashi, Hiroshi Matsuyama, Naozumi Shiraiwa, Taiji Katsumata, Yuuta Fujino, Hiroshi Sato, Kiyoshi Takeuchi, Hiroyuki Hagio, Aiko Yoshida, Hiroaki Nakatsugawa
  • Patent number: 10564338
    Abstract: A polarizing plate, which includes at least a polarizer layer including an iodine-dyed polyvinyl alcohol film, and the polarizing plate including a compound with a bond dissociation energy E1 of less than or equal to 90.0 kcal/mol, a peroxide radical forming energy E2 of less than or equal to 0.0 kcal/mol, and a polyiodide ion I5? forming ability in an iodide compound-containing solution of less than or equal to 1.0.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: February 18, 2020
    Assignee: FUJIFILM CORPORATION
    Inventors: Shino Ohira, Mayumi Nojiri, Naoya Shimoju, Aiko Yoshida, Nobutaka Fukagawa
  • Patent number: 10457792
    Abstract: A polarizing plate protective film which prevents deterioration of polarization performance in a high temperature, high humidity environment, and a polarizing plate and display device using the film including a compound represented by the following General Formula (I). (X-LnZ??General Formula (I) X represents a formyl group, a boronic acid group, or a group represented by the following General Formula (I-B) or a group represented by the following General Formula (I-C), where L represents a single bond or divalent linking group, and n represents an integer equal to or greater than 2. When n is 2, Z represents a single bond or a divalent group, and when n?3, Z represents an n-valent group. RA and RB represent an alkyl group, a cycloalkyl group, an aryl group, or an acyl group. RA and RB may be bonded to each other to form a ring. * represents a bond to be bonded to L.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: October 29, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Nobutaka Fukagawa, Naoki Sano, Mayumi Nojiri, Aiko Yoshida, Naoya Shimoju
  • Patent number: 10338290
    Abstract: A cellulose ester film contains a compound having a structural unit denoted by —NR—(C?O)— in which R represents a hydrogen atom or a substituent, a surface having knoop hardness of greater than or equal to 210 N/mm2 is provided, and loss tangent tan ? at 25° C. is greater than or equal to 0.03.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: July 2, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Yasukazu Kuwayama, Hiroshi Inada, Aiko Yoshida, Yoshitaka Maeda, Yusuke Ino, Shuuji Kanayama, Nobutaka Fukagawa
  • Patent number: 10338277
    Abstract: A polarizing plate protective film containing a compound represented by formula (I); a polarizing plate; and a display: in formula (I), X represents a group of formula (I-A-1) or (I-A-2), L represents a single bond or a divalent linking group, Z represents an n-valent linking group, and n represents an integer of 2 or more; however, when n is 2, the case where L and Z each are simultaneously a single bond is excluded: in formulae (I-A-1) and (I-A-2), RAC1 and RAC2 each independently represent an alkyl, cycloalkyl, aryl, or acyl group; however, the case where RAC1 and RAC2 bond to each other to form a ring is excluded; RAC3 to RAC6 each independently represent a hydrogen atom, or an alkyl, cycloalkyl, aryl, acyl, alkoxy, or alkoxycarbonyl group; and an asterisk (*) represents a bonding hand to form a bonding with L.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: July 2, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Aiko Yoshida, Naoya Shimoju, Naoki Sano, Nobutaka Fukagawa
  • Patent number: 10253201
    Abstract: A composition for a polarizing plate containing a polymer having a partial structure represented by the following ring structure ? or ? in the molecule, a polarizing plate protective film, a cellulose acylate film, a polarizer, a polarizing plate, and a display; wherein L1 represents a single bond, —C(?O)—, —C(?S)—, an alkylene group, or an arylene group; and the symbol * designates a boning hand, or a site to which a hydrogen atom, a substituent, or a linking group binds.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: April 9, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Aiko Yoshida, Naoya Shimoju, Mayumi Nojiri, Nobutaka Fukagawa
  • Patent number: 10254456
    Abstract: A polarizing plate composition, a polarizing plate protective film, a polarizer, a polarizing plate, and a liquid crystal display device contain a compound represented by the following Formula (I). In Formula (I), R represents a specific substituent, and each of EWG1 and EWG2 represents an electron-withdrawing group. EWG1 and EWG2 may form a ring by being bonded to each other. Here, there is no such case where EWG1 and EWG2 become the following group by being bonded to each other and form a ring by being bonded to a carbon atom substituted with R. Each of Rx and Ry represents a hydrogen atom or a substituent. * represents a position of bonding to a carbon atom substituted with R.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: April 9, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Naoya Shimoju, Aiko Yoshida, Mayumi Nojiri, Yu Naito
  • Patent number: 10160846
    Abstract: The inventions are an optical film containing cellulose acylate and a compound having a structure denoted by General Formula (A) described below, and a polarizing plate and a liquid crystal display device employing the optical film. L represents n-valent connecting group, n represents an integer of greater than or equal to 2, and A represents a heterocyclic group denoted by General Formula (I). R1, R3, and R5 represent a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an aryl group, or a heteroaryl group. Here, any one of R1, R3, and R5 is bonded to L.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: December 25, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Masaki Noro, Yutaka Nozoe, Hiroshi Inada, Naoya Shimoju, Aiko Yoshida, Yu Naito, Yasukazu Kuwayama
  • Publication number: 20180267368
    Abstract: An object of the present invention is to provide an optical film having an optically-anisotropic layer having excellent durability, a polarizing plate and an image display device in which the optical film is used, a polymerizable compound used in the optical film, and a method for manufacturing a 1,4-cyclohexanedicarboxylic acid monoaryl ester. The optical film of the present invention is an optical film having at least an optically-anisotropic layer, in which the optically-anisotropic layer is a layer obtained by polymerizing a polymerizable liquid crystal composition containing a polymerizable compound which has a specific structure, a liquid crystal compound which has a specific structure, and a polymerization initiator.
    Type: Application
    Filed: May 21, 2018
    Publication date: September 20, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Keita TAKAHASHI, Hiroshi MATSUYAMA, Naozumi SHIRAIWA, Taiji KATSUMATA, Yuuta FUJINO, Hiroshi SATO, Kiyoshi TAKEUCHI, Hiroyuki HAGIO, Aiko YOSHIDA, Hiroaki NAKATSUGAWA
  • Patent number: 10040754
    Abstract: A cellulose acylate film, which includes a compound denoted by general formula (I) below, the equivalent U of which, calculated as a value obtained by dividing the molecular weight of the compound by the number of divalent linking groups denoted by —O—C(?O)—NH— contained per molecule, is less than or equal to 515, wherein, in general formula (I), each of L11 and L21 independently denotes an optionally substituted alkylene group; each of L12 and L22 independently denotes a single bond, any one of or any combination of —O—, —NR1—, —S— and —C(?O)—; R1 denotes a hydrogen atom or a substituent; each of n1 and n2 independently denotes an integer of 0 to 20, with at least either n1 or n2 being an integer of greater than or equal to 1.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: August 7, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Hiroshi Inada, Naozumi Shiraiwa, Yingjie Xu, Aiko Yoshida, Masaki Noro, Yasukazu Kuwayama, Nobutaka Fukagawa
  • Patent number: 10031264
    Abstract: A polarizing plate of the present invention includes polarizing plate protective film(s) on one or both sides of a polarizer, wherein the polarizing plate protective film contains a compound represented by general formula (I) or (II) described below, the polarizer contains iodine, and the content of the iodine within the polarizer is 4.0 wt % or greater.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: July 24, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Nobutaka Fukagawa, Naoki Sano, Mayumi Nojiri, Aiko Yoshida, Naoya Shimoju
  • Patent number: 10014568
    Abstract: Embodiments described herein relate a mobile communication device and techniques to suppress deterioration of antenna characteristics. The mobile device includes metallic members that are disposed around, or in portions of a casing of the mobile device. The metallic member is grounded directly to a ground plane of the mobile device at a first predetermined position. The grounded metallic member forms a stub line that cancels a flow of electric current though the metallic member. Furthermore, the metallic member is also connected to the ground plane, at a second predetermined location, via a resonant circuit. The mobile device is capable of adjusting a phase of the antenna current flowing through the device, when the mobile device is being operated by a user, and thus suppresses deterioration of antenna characteristics in certain desired frequency bands.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: July 3, 2018
    Assignees: SONY CORPORATION, SONY MOBILE COMMUNICATIONS INC.
    Inventors: Aiko Yoshida, Masato Tanaka, Hideaki Shoji
  • Patent number: 9917357
    Abstract: Discussed herein is an antenna system that comprises a feed element and a radiating element that are formed on a dielectric substrate positioned above a circuit board which includes a feed circuit and a ground layer. Specifically, the feed element is disposed within an outer periphery defined by the radiating element. A capacitive coupling is formed between the feed element and the radiating element. With the aforesaid configuration, the antenna system is less affected by the circuit board and interference from other elements that are mounted on the circuit board. Further, manufacturing costs are reduced as compared to the case where the feed element and the radiating element are respectively formed on a front and rear surface of a resin layer.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: March 13, 2018
    Assignees: Sony Corporation, Sony Mobile Communications Inc.
    Inventors: Masato Tanaka, Hideaki Shoji, Aiko Yoshida
  • Patent number: 9876271
    Abstract: Embodiments described herein relate a mobile communication device and techniques to suppress deterioration of antenna characteristics. The mobile device includes metallic members that are disposed around, or in portions of a casing of the mobile device. The metallic member is grounded directly to a ground plane of the mobile device at a first predetermined position. The grounded metallic member forms a stub line that cancels a flow of electric current though the metallic member. Furthermore, the metallic member is also connected to the ground plane, at a second predetermined location, via a resonant circuit. The mobile device is capable of adjusting a phase of the antenna current flowing through the device, when the mobile device is being operated by a user, and thus suppresses deterioration of antenna characteristics in certain desired frequency bands.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: January 23, 2018
    Assignees: Sony Corporation, Sony Mobile Communications Inc.
    Inventors: Aiko Yoshida, Masato Tanaka, Hideaki Shoji