Patents by Inventor Takeaki Tsuda

Takeaki Tsuda 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: 11858250
    Abstract: This disclosure provides an electronic device member that is superior in ease of handling, without any loss of flatness or performance (e.g. flexibility and dielectric properties) despite being a dielectric sheet having a dielectric polymer cured material that is physically fragile. Disclosed herein is a layered body including (L1) a single layer or multiple layers of a high dielectric sheet that includes a polymer cured material having a dielectric functional group, and at least one (L2) pressure-sensitive adhesive layer, and in general further having (L3) an electrode layer and/or (L4) a non-silicone thermoplastic resin layer, and uses thereof.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: January 2, 2024
    Assignee: DOW TORAY CO., LTD.
    Inventors: Hiroshi Fukui, Takeaki Tsuda
  • Publication number: 20230295432
    Abstract: A laminate body is provided, in which two or more organopolysiloxane cured films are obtained by curing curable organopolysiloxane compositions having different compositions because, e.g., the functions required for a dielectric layer and electrode layer are different. In general, problems such as peeling and defects due to insufficient adhesive strength and trackability do not easily occur at an interface between the cured films forming the laminate body. Applications and methods are also provided. The laminate body comprises a structure with two or more laminated organopolysiloxane cured films with different compositions. At least a portion of functional groups involved in the curing reaction are the same. The laminated cured films have structures chemically bonded at an interface thereof.
    Type: Application
    Filed: June 21, 2021
    Publication date: September 21, 2023
    Inventors: Hiroshi FUKUI, Kyoko TOYAMA, Masayasu AKASAKA, Takeaki TSUDA
  • Patent number: 11725081
    Abstract: An organopolysiloxane cured film which can be made thin, has an extremely low number of defects on a surface and inside of the film, and exhibits high dielectric breakdown strength with regard to a load voltage is provided. Also provided are applications thereof and a method of manufacturing. The organopolysiloxane cured film has an average thickness within a range of 1 to 200 ?m. In general, the number of surface defects is 0 to 1, and the number of internal defects is 0 to 20, when measuring the number of surface defects using optical means in an arbitrary position on the organopolysiloxane cured film with a unit area of 15 mm×15 mm. The organopolysiloxane cured film may be obtained by a rolling step in a clean room or the like, or may be obtained by curing between separators provided with a release layer.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: August 15, 2023
    Assignee: DOW TORAY CO., LTD.
    Inventors: Hiroshi Fukui, Yoichi Kaminaga, Takeaki Tsuda
  • Publication number: 20230015553
    Abstract: Performance requirements of electroactive polymer materials used for transducer devices include dielectric breakdown strength, Young's modulus, dielectric constant, thickness, and electromechanical instability. There are correlation relationships therebetween but definitions of the correlation relationships have not been achieved. Therefore, it is necessary to search for an excellent material by trial and error, which requires a great deal of work. Disclosed herein is a curable elastomer composition that includes a compound having a high dielectric functional group. A cured product of the composition satisfies the following formula: E = ? ? ( Y ? 0 ? ? r ) 0.5 where E is the dielectric breakdown strength in the range of 50 V/?m to 200 V/?m, ? is a constant in the range of 0.4 to 0.9, Y is Young's modulus and is in the range of 0.001 MPa to 10 MPa, ?? is a specific dielectric constant and is 100 or less, and ?0 represents the dielectric constant of vacuum.
    Type: Application
    Filed: December 21, 2020
    Publication date: January 19, 2023
    Inventors: Hiroshi FUKUI, Takeaki TSUDA
  • Publication number: 20220089872
    Abstract: Provided is: an organopolysiloxane cured film that is superior as a thin film and, in terms of flatness, has significantly superior smoothness and flatness at the film surface, in addition to generally having high dielectric breakdown strength against a load voltage; along with a usage and manufacturing method therefor. The organopolysiloxane cured film, in which an arithmetic average height (Sa) of the film surface is less than 0.50 ?m, while an average thickness at the center of the film is within a range of 1 to 20 ?m. It is possible to obtain such a film by a manufacturing method including a die coating step in which a slot die is used to coat a curable organopolysiloxane composition on a continuously traveling substrate supported between a pair of support rolls by means of a tension support system.
    Type: Application
    Filed: February 14, 2020
    Publication date: March 24, 2022
    Inventors: Hiroshi FUKUI, Takeaki TSUDA
  • Publication number: 20220064448
    Abstract: Provided is a curable organopolysiloxane composition for forming a film capable of uniform and thin film formation, and a method of manufacturing an organopolysiloxane cured film using the same. The curable organopolysiloxane composition for forming a film, comprises: a curing reactive organopolysiloxane, a curing agent, and one or more type of organic solvent selected from (D1) organic polar solvents, (D2) low molecular weight siloxane solvents, and (D3) halogen solvents, or a mixed solvent thereof. The viscosity of the entire composition measured at a shear rate of 0.1 (s?1) at 25° C. is 100,000 mPa·s or less, the viscosity of the entire composition measured at a shear rate of 10.0 (s?1) is within a range of 5 to 10,000 mPa·s, and a thixotropic ratio thereof is 25.0 or less.
    Type: Application
    Filed: December 6, 2019
    Publication date: March 3, 2022
    Inventors: Hiroshi FUKUI, Takeaki TSUDA, Hua REN
  • Publication number: 20210238365
    Abstract: An organopolysiloxane cured film which can be made thin, has an extremely low number of defects on a surface and inside of the film, and exhibits high dielectric breakdown strength with regard to a load voltage is provided. Also provided are applications thereof and a method of manufacturing. The organopolysiloxane cured film has an average thickness within a range of 1 to 200 ?m. In general, the number of surface defects is 0 to 1, and the number of internal defects is 0 to 20, when measuring the number of surface defects using optical means in an arbitrary position on the organopolysiloxane cured film with a unit area of 15 mm×15 mm. The organopolysiloxane cured film may be obtained by a rolling step in a clean room or the like, or may be obtained by curing between separators provided with a release layer.
    Type: Application
    Filed: July 16, 2019
    Publication date: August 5, 2021
    Inventors: Hiroshi FUKUI, Yoichi KAMINAGA, Takeaki TSUDA
  • Publication number: 20210139669
    Abstract: An optical member resin sheet has excellent characteristics as an optical member and exhibits excellent performance even if used for a light-emitting device or the like. The optical member resin sheet is characterized in that the difference between the thickness of an end of the sheet and the thickness of the center of the sheet in the width direction of the sheet is within 5.0% of the total film thickness of the sheet; in that the thickness of the center of the sheet is in the range of 10-1000 ?m; in that the sheet area is 225 mm2 or more; and by containing at least one fluorescent substance or reflective material.
    Type: Application
    Filed: July 19, 2018
    Publication date: May 13, 2021
    Applicant: Dow Corning Toray Co., Ltd.
    Inventors: Masaaki Amako, Takeaki Tsuda
  • Publication number: 20200316908
    Abstract: This disclosure provides an electronic device member that is superior in ease of handling, without any loss of flatness or performance (e.g. flexibility and dielectric properties) despite being a dielectric sheet having a dielectric polymer cured material that is physically fragile. Disclosed herein is a layered body including (L1) a single layer or multiple layers of a high dielectric sheet that includes a polymer cured material having a dielectric functional group, and at least one (L2) pressure-sensitive adhesive layer, and in general further having (L3) an electrode layer and/or (L4) a non-silicone thermoplastic resin layer, and uses thereof.
    Type: Application
    Filed: September 13, 2018
    Publication date: October 8, 2020
    Inventors: Hiroshi FUKUI, Takeaki TSUDA
  • Patent number: 10784451
    Abstract: A flexible laminate, in which it is possible to achieve both flexibility and durability, is disclosed. A flexible display using the flexible laminate is also disclosed. The flexible laminate includes one or more units of a laminate structure in which two hard layers interposing one or more intermediate layers therebetween are bonded together as one unit. The intermediate layer has viscoelasticity. When the flexible laminate is bent, a neutral plane is formed in each inner portion of the hard layers that are bonded together to interpose the intermediate layer therebetween.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: September 22, 2020
    Assignee: DOW TORAY CO., LTD.
    Inventors: Takeaki Tsuda, Michitaka Suto, Haruna Mizuno, Haruhiko Furukawa, Maki Itoh
  • Patent number: 10618255
    Abstract: A flexible laminate for which increased flexibility and improved durability can coexist, and a flexible display provided with same, are disclosed. The flexible laminate has at least one unit of a laminated structure in which two hard layers closely adhere to each other with at least one intermediate layer therebetween. When the flexible laminate is bent, neutral planes are formed inside each of the hard layers that closely adhere to each other with the intermediate layer therebetween. The flexible laminate satisfies the following expression: a×ln(tan ?×ET/0.01)?100. In the expression, a is any value ranging from 200 to 2,000, tan ? represents a loss factor for a substance configuring the intermediate layer, and ET represents an elastic modulus (MPa) of the substance configuring the intermediate layer.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: April 14, 2020
    Assignees: Dow Toray Co., Ltd., Dow Silicones Corporation
    Inventors: Hojin Choi, Haruhiko Furukawa, Maki Itoh, Jeonggi Kim, Sunny Kim, Haruna Mizuno, Michitaka Suto, Takeaki Tsuda
  • Publication number: 20200028100
    Abstract: A flexible laminate, in which it is possible to achieve both flexibility and durability, is disclosed. A flexible display using the flexible laminate is also disclosed. The flexible laminate includes one or more units of a laminate structure in which two hard layers interposing one or more intermediate layers therebetween are bonded together as one unit. The intermediate layer has viscoelasticity. When the flexible laminate is bent, a neutral plane is formed in each inner portion of the hard layers that are bonded together to interpose the intermediate layer therebetween.
    Type: Application
    Filed: February 17, 2017
    Publication date: January 23, 2020
    Inventors: Haruhiko FURUKAWA, Maki ITOH, Haruna MIZUNO, Michitaka SUTO, Takeaki TSUDA
  • Patent number: 10473822
    Abstract: An optical element comprises an antireflective layer that is disposed on and in contact with a substrate. The antireflective layer has a refractive index of greater than 1 to less than 1.41 and has a pore size ranging from greater than 0 to less than 300 nm. The antireflective layer includes an outermost surface having a water contact angle ranging from greater than or equal to 70° to less than or equal to 120° as determined using ASTM 5946-04.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: November 12, 2019
    Assignee: Dow Silicones Corporation
    Inventors: Fengqiu Fan, Brian R. Harkness, Jr., Junying Liu, Wei Rong, Takeaki Tsuda, Michael L. Bradford
  • Publication number: 20190134946
    Abstract: A flexible laminate for which increased flexibility and improved durability can coexist, and a flexible display provided with same, are disclosed. The flexible laminate has at least one unit of a laminated structure in which two hard layers closely adhere to each other with at least one intermediate layer therebetween. When the flexible laminate is bent, neutral planes are formed inside each of the hard layers that closely adhere to each other with the intermediate layer therebetween. The flexible laminate satisfies the following expression: a×In (tan ?×ET/0.01)?100. In the expression, a is any value ranging from 200 to 2,000, tan ? represents a loss factor for a substance configuring the intermediate layer, and ET represents an elastic modulus (MPa) of the substance configuring the intermediate layer.
    Type: Application
    Filed: April 26, 2017
    Publication date: May 9, 2019
    Inventors: Hojin CHOI, Haruhiko FURUKAWA, Maki ITOH, Jeonggi KIM, Sunny KIM, Haruna MIZUNO, Michitaka SUTO, Takeaki TSUDA
  • Publication number: 20190127531
    Abstract: This disclosure provides a highly dielectric film that is formed of a fluoroalkyl-group-containing organopolysiloxane cured product and that has a high dielectric constant and is substantially flat and uniform in a width direction of the film, usages thereof and a manufacturing method therefor. There is provided the highly dielectric film formed of a fluoroalkyl-group-containing organopolysiloxane cured product, in which in a width direction of the film, a difference between a thickness at an end of the film and a thickness at a center of the film is 5.0% or less, and the thickness at the center of the film falls within a range of 50 to 1000 ?m. Such a film may be provided with a primer layer and a planarization layer, and the film may be obtained by means of rolling and may also be obtained by means of curing performed between separators provided with a separation layer.
    Type: Application
    Filed: April 12, 2017
    Publication date: May 2, 2019
    Inventors: Hiroshi FUKUI, Toru MASATOMI, Takeaki TSUDA
  • Publication number: 20160363698
    Abstract: An optical element comprises an antireflective layer that is disposed on and in contact with a substrate. The antireflective layer has a refractive index of greater than 1 to less than 1.41 and has a pore size ranging from greater than 0 to less than 300 nm. The antireflective layer includes an outermost surface having a water contact angle ranging from greater than or equal to 70° to less than or equal to 120° as determined using ASTM 5946-04.
    Type: Application
    Filed: April 7, 2015
    Publication date: December 15, 2016
    Applicant: Dow Corning Corporation
    Inventors: FENGQIU FAN, BRIAN R. HARKNESS, Jr., JUNYING LIU, WEI RONG, TAKEAKI TSUDA, MICHAEL L. BRADFORD
  • Patent number: 7160390
    Abstract: During displacement relative to a substrate 1, a coating die head emits coating liquid out of a slot 12a to a surface of the substrate. The coating die head includes a lip 12b having a lip surface 12b and a side having a side surface 12c. A contact angle of the surface 12c with respect to the coating liquid is greater than a contact angle of the surface 12b with respect to the coating liquid. This configuration enhances stabilization of bead of the coating liquid during application process of the coating liquid, preventing stripes and steps from appearing in the coating layer. This coating die head makes it possible to carry out high precision coating required for fabrication of color filters for liquid crystal displays.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: January 9, 2007
    Assignee: Dai Nippon Printing Co. Ltd
    Inventors: Takeaki Tsuda, Hiroshi Yoshiba, Takashi Aoki
  • Publication number: 20050000420
    Abstract: During displacement relative to a substrate 1, a coating die head emits coating liquid out of a slot 12a to a surface of the substrate. The coating die head includes a lip 12b having a lip surface 12b and a side having a side surface 12c. A contact angle of the surface 12c with respect to the coating liquid is greater than a contact angle of the surface 12b with respect to the coating liquid. This configuration enhances stabilization of bead of the coating liquid during application process of the coating liquid, preventing stripes and steps from appearing in the coating layer. This coating die head makes it possible to carry out high precision coating required for fabrication of color filters for liquid crystal displays.
    Type: Application
    Filed: July 18, 2003
    Publication date: January 6, 2005
    Inventors: Takeaki Tsuda, Hiroshi Yoshiba, Takashi Aoki
  • Publication number: 20040022954
    Abstract: Coating liquids (A) and (B) containing a plurality of organic solvents are previously multilayered on an inclined slide surface 2. The multilayered coating liquids (A) and (B) are transferred onto a substrate 4 to make a multilayered coating film. A coating liquid, which has a mixture ratio of a true solvent and other solvents higher than a ratio at which a gelation starts, is used as the coating liquid (B) for making a lower layer. Thus, a clearly separated multilayered coating film can be achieved without a boundary face between layers being blurred because of solvent diffusion, even when the coating liquids have low viscosity.
    Type: Application
    Filed: April 23, 2003
    Publication date: February 5, 2004
    Inventors: Takeaki Tsuda, Hiroshi Yoshiba