Patents by Inventor Masanobu Mizusaki

Masanobu Mizusaki 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: 10831065
    Abstract: The present invention provides a liquid crystal display device that includes a retardation layer with excellent thermal stability and suppresses a decrease in contrast ratio caused by scattering even when the retardation layer has been formed by polymerizing reactive monomers. The liquid crystal display device includes a pair of substrates and a liquid crystal layer held between the substrates. At least one of the substrates includes a retardation layer that contains a polymer of at least one type of monomer. The at least one type of monomer includes a photo-alignment monomer represented by a certain formula.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: November 10, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Masanobu Mizusaki
  • Patent number: 10824014
    Abstract: The present invention provides a liquid crystal display device that includes a retardation layer with excellent thermal stability and suppresses a decrease in contrast ratio caused by scattering even when the retardation layer has been formed by polymerizing reactive monomers. The liquid crystal display device includes a pair of substrates and a liquid crystal layer held between the substrates. At least one of the substrates includes a retardation layer that contains a polymer of at least one type of monomer. The at least one type of monomer includes a photo-alignment monomer represented by a certain formula.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: November 3, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Masanobu Mizusaki
  • Patent number: 10824006
    Abstract: The present invention provides a liquid crystal display device which includes a reflective electrode, which achieves its low-voltage driving, and which suppresses flickering caused during its driving and image sticking caused by its long-term driving. The liquid crystal display device of the present invention includes: a first substrate provided with a reflective electrode configured to reflect ambient light; a second substrate facing the first substrate; a liquid crystal layer sandwiched between the first substrate and the second substrate and containing a liquid crystal material that contains a liquid crystal compound containing an alkoxy group and has negative anisotropy of dielectric constant; an alignment film provided on at least one of the first substrate and the second substrate on a side facing the liquid crystal layer; and an aromatic polymer that is present between the liquid crystal layer and the alignment film and/or within the alignment film and has a specific structure.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: November 3, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masanobu Mizusaki, Takashi Satoh, Hiroshi Tsuchiya
  • Patent number: 10815426
    Abstract: A liquid crystal cell according to the present invention includes a TFT board including a first dielectric substrate, TFTs supported by the first dielectric substrate, and patch electrodes, a slot board including a second dielectric substrate and a slot electrode having slots and supported by the second dielectric substrate, and a liquid crystal layer between the TFT board and the slot board, which are positioned with the patch electrodes and the slot electrode facing each other, and a sealant disposed between the TFT board and the slot board and surrounding the liquid crystal layer. The liquid crystal layer includes a liquid crystal compound containing an isothiocyanate group. The sealant includes an ene-thiol compound in which an ene compound and a thiol compound are bonded by using a radical.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: October 27, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masanobu Mizusaki, Kiyoshi Minoura
  • Publication number: 20200335874
    Abstract: The scanning antenna (1000) is a scanning antenna in which antenna units (U) are arranged, the scanning antenna comprising: a TFT substrate (101) including: a first dielectric substrate (1), TFTs, gate bus lines, source bus lines, and patch electrodes (15), a slot substrate (201) including: a second dielectric substrate (51), and a slot electrode (55); a liquid crystal layer (LC) provided between the TFT substrate and the slot substrate; a sealing portion that envelopes the liquid crystal layer; and a reflective conductive plate (65). The slot electrode includes slots (57) arranged in correspondence with the plurality of patch electrodes. The sealing portion includes a main sealing portion (73Fa) that defines an injection port (74Fa) and an end sealing portion (75Fa) that seals the injection port (74Fa). The end sealing portion (75Fa) is formed of a thermosetting sealant material.
    Type: Application
    Filed: February 16, 2017
    Publication date: October 22, 2020
    Inventors: MASANOBU MIZUSAKI, JUMPEI TAKAHASHI, HIROSHI TSUCHIYA, KIYOSHI MINOURA
  • Patent number: 10802344
    Abstract: Provided is a liquid crystal display device including a first substrate; a second substrate; a liquid crystal layer sandwiched between the first substrate and the second substrate and containing a negative liquid crystal material; a first alignment film provided on the surface of the first substrate on the liquid crystal layer side; a first phase difference layer having birefringence provided between the first substrate and the first alignment film; and a second alignment film disposed on the surface of the second substrate on the liquid crystal layer side, wherein at least one of the first alignment film and the second alignment film is a photo-alignment film being in contact with the liquid crystal layer and imparting a pretilt angle of 75° or more and less than 90° to the liquid crystal material; the first phase difference layer is formed of a first polymer material having a first photofunctional group; the photo-alignment film is formed of a second polymer material having a second photofunctional group; a
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: October 13, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masanobu Mizusaki, Kiyoshi Minoura, Akira Sakai
  • Publication number: 20200303817
    Abstract: A liquid crystal cell in which antenna units are arranged includes a TFT substrate, a slot substrate, and a liquid crystal layer. The TFT substrate includes a first dielectric substrate, TFTs supported by the first dielectric substrate and patch electrodes electrically connected to the TFTs, and a first alignment film covering a groove part between the adjacent patch electrodes. The slot substrate includes a second dielectric substrate, a slot electrode including slots and supported by the second dielectric substrate, and a second alignment film covering the slot electrode. The liquid crystal layer sandwiched between the TFT substrate and the slot substrate. The liquid crystal layer includes a liquid crystal material having a lower limit temperature of a nematic phase of the liquid crystal material of ?32° C. or lower and an upper limit temperature of the nematic phase of the liquid crystal material of 110° C. or higher.
    Type: Application
    Filed: March 16, 2018
    Publication date: September 24, 2020
    Inventors: MASANOBU MIZUSAKI, KIYOSHI MINOURA
  • Publication number: 20200292888
    Abstract: A liquid crystal cell includes a pair of substrates, a liquid crystal layer, and a sealant. The pair of substrates includes opposing surfaces on which a photo-alignment film is provided. The liquid crystal layer is interposed between the substrates. The sealant is interposed between the substrates so as to surround the liquid crystal layer. The photo-alignment film contains a polymer having a polyamic acid as a main chain and a photo-functional group. The liquid crystal layer contains: a first liquid crystal compound having an unsaturated bond; and a second liquid crystal compound containing at least one compound selected from the group consisting of: a compound represented by a formula (I): A1-CnF2nB-A2; and a compound represented by a formula (II): A1-BCnF2n+1, where n, A1, A2 and B are as defined herein.
    Type: Application
    Filed: March 17, 2017
    Publication date: September 17, 2020
    Inventors: MASANOBU MIZUSAKI, HIROSHI TSUCHIYA
  • Patent number: 10774182
    Abstract: The present invention provides a liquid crystal display device in which flicker and image sticking caused by long-term use are suppressed.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: September 15, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masanobu Mizusaki, Hiroshi Tsuchiya, Takashi Satoh
  • Publication number: 20200286931
    Abstract: A scanning antenna (1000) in which antenna units (U) are arranged, the scanning antenna including: a first dielectric substrate (1); a TFT substrate (101) including TFTs, gate bus lines, source bus lines, and patch electrodes (15); a slot substrate (201) including a second dielectric substrate (51), and a slot electrode (55) formed on a first main surface of the second dielectric substrate; a liquid crystal layer (LC) provided between the TFT substrate and the slot substrate; and a reflective conductive plate (65) provided opposing a second main surface of the second dielectric substrate (51) opposite to the first main surface via a dielectric layer (54). The slot electrode includes slots arranged corresponding to each of the patch electrodes, and the second dielectric substrate (51) and the slot electrode (5) further include an adhesive layer (92) formed therebetween from a thermosetting type or photocurable type adhesive material.
    Type: Application
    Filed: December 16, 2016
    Publication date: September 10, 2020
    Applicants: SHARP KABUSHIKI KAISHA, SHARP KABUSHIKI KAISHA
    Inventors: JUMPEI TAKAHASHI, MASANOBU MIZUSAKI, KIYOSHI MINOURA, AKIRA SAKAI
  • Patent number: 10770792
    Abstract: A liquid crystal panel included in a scanning antenna includes: a TFT substrate including a first dielectric substrate, a TFT supported on the first dielectric substrate, a gate bus line, a source bus line, a patch electrode, and a first alignment film covering the patch electrode; a slot substrate including a second dielectric substrate, a slot electrode formed on a first main surface of the second dielectric substrate and including a slot arranged corresponding to the patch electrode, and a second alignment film covering the slot electrode; and a liquid crystal layer provided between the TFT substrate and the slot substrate and containing a liquid crystal molecule having an isothiocyanate group. The patch electrodes and the slot electrode are each formed of a Cu layer or an Al layer, and the first alignment film and the second alignment film each include a compound having an atomic group forming a coordinate bond with Cu or Al.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: September 8, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masanobu Mizusaki, Jumpei Takahashi
  • Patent number: 10754198
    Abstract: A liquid crystal display device in which a good voltage holding ratio is retained for a long period of time and occurrence of image sticking and stain in a display screen is prevented by using a photo-alignment film. The liquid crystal display device includes an active matrix liquid crystal panel and a backlight. The liquid crystal panel includes a liquid crystal layer, a pair of substrates that sandwich the liquid crystal layer in between, and an alignment film disposed on a liquid crystal layer side surface of each of the substrates. The alignment films are photo-alignment films formed from a material that exhibits a photo-alignment characteristic, and contain carboxyl groups on the liquid crystal layer side. The liquid crystal layer contains a liquid crystal material and at least one kind of quinone derivative selected from the group consisting of benzoquinone derivatives and anthraquinone derivatives.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: August 25, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Masanobu Mizusaki
  • Patent number: 10756431
    Abstract: A scanning antenna includes a transmission and/or reception region including a plurality of antenna units and a non-transmission and/or reception region located in a region other than the transmission and/or reception region. The scanning antenna includes a TFT substrate, a slot substrate, and a liquid crystal layer provided between the TFT substrate and the slot substrate. The scanning antenna includes: at least one monitoring capacitance section formed in the non-transmission and/or reception region, the section including a liquid crystal layer and a monitoring capacitance, which includes a first measurement electrode and a second measurement electrode opposing each other with the liquid crystal layer interposed therebetween; and a voltage monitor connectable to the first measurement electrode of the monitoring capacitance.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: August 25, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Jumpei Takahashi, Masanobu Mizusaki, Kiyoshi Minoura, Yohji Taniguchi
  • Patent number: 10756444
    Abstract: A liquid crystal panel included in a scanning antenna includes: a TFT substrate including a first dielectric substrate, a TFT supported by the first dielectric substrate, a gate bus line, a source bus line, a patch electrode, and a first alignment film covering the patch electrode; a slot substrate including a second dielectric substrate, a slot electrode formed on a first main surface of the second dielectric substrate and including a slot disposed corresponding to the patch electrode, and a second alignment film covering the slot electrode; and a liquid crystal layer provided between the TFT substrate and the slot substrate and containing a liquid crystal molecule including an isothiocyanate group. The first alignment film and the second alignment film are each independently formed of a polyimide-based alignment film material.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: August 25, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masanobu Mizusaki, Jumpei Takahashi, Hiroshi Tsuchiya
  • Patent number: 10753417
    Abstract: A stabilizer bush including: a tubular rubber bushing body having an inner hole for inserting a stabilizer bar; and a mounting base provided on a fixing surface of the rubber bushing body against a vehicle body. The stabilizer bush is configured to be installed on the vehicle body such that an outer peripheral surface of the rubber bushing body is press-fitted on a side of the vehicle body via the mounting base by a roughly U-shaped bracket to be fixed to the vehicle body. The rubber bushing body includes a shock absorbing rubber part that is elastically deformed due to a compression force caused by pressing of the bracket, bulges to both sides in the width direction of the mounting base, and enters and interposes between the mounting base and the bracket.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: August 25, 2020
    Assignees: SUMITOMO RIKO COMPANY LIMITED, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshikane Akiyama, Masanobu Mizusaki, Yuji Homma
  • Patent number: 10739647
    Abstract: The present invention aims to provide a sealant for sealing liquid crystal and a liquid crystal display device, which can sufficiently reduce image sticking and stains at the periphery of a liquid crystal display. The sealant for sealing liquid crystal of the present invention contains a curable resin and a radical polymerization initiator, wherein the radical polymerization initiator contains a silsesquioxane group. The silsesquioxane group is preferably a group represented by the following formula (I) or (II): wherein R1s are the same as or different from each other and each represent a monovalent organic group; R2 represents a divalent linking group; R3s are the same as or different from each other and each represent a monovalent organic group; and R4 represents a divalent linking group.
    Type: Grant
    Filed: November 24, 2016
    Date of Patent: August 11, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masanobu Mizusaki, Hiroshi Tsuchiya, Kenya Ito
  • Publication number: 20200241364
    Abstract: A liquid crystal cell 10A according to the present invention includes: a pair of substrates 11 and 12 facing each other and having alignment films 11a and 12a formed on surfaces of the substrates, respectively, the surfaces facing each other; and a liquid crystal layer LC interposed between the substrates 11 and 12. The alignment films 11a and 12a contain a polymer for alignment films which has a hydrazide functional group represented by Chemical Formula (1).
    Type: Application
    Filed: March 2, 2018
    Publication date: July 30, 2020
    Inventors: MASANOBU MIZUSAKI, TOMONORI ITOH, TAKASHI SATOH
  • Publication number: 20200208056
    Abstract: The present invention provides a liquid crystal alignment agent having high thermal stability and high solvent solubility, and a liquid crystal panel in which occurrence of ghosting and stain and a decrease in contrast are suppressed even under environments at high temperatures long period of time. The present invention is a liquid crystal alignment agent including a copolymer including a structure represented by a chemical formula (1) below, and a solvent. In the formula, X is a specified structure including a cyclic hydrocarbon group, Y1 is a specified structure including a cyclic hydrocarbon group, R1 represents a homogeneous alignment group, a homeotropic alignment group, or a photoreactive functional group, and Z1 and Z2 are the same or different, and represent an —NH— group, an —O— group, or a —S— group.
    Type: Application
    Filed: June 29, 2018
    Publication date: July 2, 2020
    Inventors: MASANOBU MIZUSAKI, HIROSHI TSUCHIYA
  • Publication number: 20200199450
    Abstract: The present invention is a liquid crystal display device including a liquid crystal layer containing a liquid crystal material, a sealing member surrounding the liquid crystal layer in a plan view, a pair of substrates sandwiching the liquid crystal layer, and an alignment control layer being in contact with the liquid crystal layer in a region surrounded by the sealing member in a plan view. The alignment control layer aligns a liquid crystal compound in the liquid crystal material in a direction horizontal to faces of the substrates, and contains a polymer formed by polymerization of at least one monomer, and the at least one monomer contains a monomer represented by the following Chemical formula (1): wherein at least one hydrogen atom of the phenylene group may be the same or different and may be substituted with a halogen atom, a methyl group, an ethyl group, or a propyl group.
    Type: Application
    Filed: March 22, 2018
    Publication date: June 25, 2020
    Inventors: MASANOBU MIZUSAKI, TOMONORI ITOH
  • Publication number: 20200192139
    Abstract: The present, invention provides a liquid crystal display device that can exhibit excellent retardation stability against heat and that can prevent reduction in contrast ratio due to scattering even when the liquid crystal display device includes a retardation layer formed by polymerization of a reactive monomer, and a method for producing a liquid crystal display device suitable for production of the liquid crystal display device. The liquid crystal display device of the present invention includes paired substrates and a liquid crystal layer provided between the paired substrates. At least one of the paired substrates includes a retardation layer formed from a polymer of at least one type of monomer. The at least one type of monomer includes a photo-aligning monomer that is to be aligned by polarized light.
    Type: Application
    Filed: March 22, 2018
    Publication date: June 18, 2020
    Inventors: MASANOBU MIZUSAKI, YUICHI KAWAHIRA