Patents by Inventor Tetsuya Okamoto

Tetsuya Okamoto 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: 10056574
    Abstract: An organic EL display 1 includes a sealing film 2 provided on a plastic substrate 10 to cover an organic EL element 4. The sealing film 2 includes a first sealing layer 25 on a surface of the plastic substrate 10, three stress relief layers 26, 27, and 28 on a surface of the first sealing layer 25, and a second sealing layer 29 on a surface of the stress relief layer 28. The stress relief layers 26, 27, and 28 each have a higher coefficient of thermal expansion than the first and second sealing layers 25 and 29. The stress relief layer 27 interposed between the stress relief layers 26 and 28 has a higher coefficient of thermal expansion than the stress relief layers 26 and 28.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: August 21, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Mamoru Ishida, Tetsuya Okamoto, Takeshi Hirase, Tohru Senoo, Tohru Sonoda, Daichi Nishikawa
  • Patent number: 10043999
    Abstract: In an organic EL display device (electroluminescence device) including a flexible TFT substrate (substrate), an organic EL element (electroluminescence element) provided on the TFT substrate, and a sealing film that seals the organic EL element, a foldable bend portion is provided. The film thickness of the sealing film is reduced at the bend portion.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: August 7, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tohru Senoo, Takeshi Hirase, Tetsuya Okamoto, Tohru Sonoda, Mamoru Ishida, Seiji Fujiwara, Daichi Nishikawa
  • Publication number: 20180219172
    Abstract: Disclosed is an organic EL display device including: a base substrate (10); an organic EL element (18) provided over the base substrate (10); and a sealing film (25a) covering the organic EL element (18). The sealing film (25a) includes a plurality of buffer layers (19a, 21a, 23a) each comprised of an inorganic film, and a buffer layer (20a, 22a) comprised of an organic film and provided between adjacent two of the plurality of buffer layers (19a, 21a, 23a). The buffer layer (20a, 22a) includes, in its peripheral edge portion surrounding the organic EL element, a flat thin portion (20t, 22t) which is thinner than the rest of the buffer layer (20a, 22a) above the organic EL element (18).
    Type: Application
    Filed: August 18, 2016
    Publication date: August 2, 2018
    Inventors: Tohru SENOO, Takeshi HIRASE, Tetsuya OKAMOTO, Takashi OCHI, Tohru SONODA, Mamoru ISHIDA
  • Publication number: 20180212193
    Abstract: An organic EL display device includes a substrate and an organic EL element (electroluminescent element) provided on the substrate. The organic El display device includes a sealing layer that seals the organic EL element. The sealing layer includes silicon oxide films. Moreover, the degree of oxidation of the silicon oxide films is set to 1.2 or more and 1.8 or less.
    Type: Application
    Filed: July 15, 2016
    Publication date: July 26, 2018
    Inventors: Takeshi HIRASE, Tetsuya OKAMOTO, Tohru SENOO, Tohru SONODA, Takashi OCHI, Mamoru ISHIDA
  • Patent number: 10014489
    Abstract: An organic EL display device 1 that includes a TFT substrate (substrate) 2 and an organic EL element (electroluminescent element) 4 provided on the TFT substrate 2 includes a sealing film 14 that seals the organic EL element 4. The sealing film 14 has a layered structure composed of an organic layer 14b and inorganic layers 14a, 14c. At least a peripheral portion 14b2 of the organic layer 14b has a lower carbon content than a central portion 14b1 of the organic layer 14b.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: July 3, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tohru Sonoda, Takeshi Hirase, Tetsuya Okamoto, Tohru Senoo, Seiji Fujiwara, Daichi Nishikawa, Mamoru Ishida
  • Publication number: 20180183006
    Abstract: In an organic EL (electroluminescence) display device including a base member, and an organic EL element disposed on the base member, the organic EL display device further includes a sealing film to seal the organic EL element. The sealing film includes two inorganic layers, and two organic layers disposed between the two inorganic layers and having infiltration rates different from each other.
    Type: Application
    Filed: August 22, 2016
    Publication date: June 28, 2018
    Inventors: Mamoru ISHIDA, Tetsuya OKAMOTO, Takeshi HIRASE, Takashi OCHI, Tohru SENOO, Tohru SONODA
  • Patent number: 9997736
    Abstract: An organic EL device includes a TFT substrate 1, a first electrode 5 provided on the TFT substrate 1, an organic EL layer 6 provided on the first electrode 5, a second electrode 7 provided on the organic EL layer 6, and a sealing film 10 covering the second electrode 7. The TFT substrate 1 is provided thereon with upward projections 11 and 12. The upward projections 11 and 12 are covered with the sealing film 10.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: June 12, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tetsuya Okamoto, Takeshi Hirase, Tohru Senoo, Tohru Sonoda, Seiji Fujiwara, Daichi Nishikawa
  • Publication number: 20180153006
    Abstract: An EL display device in which the adhesion between a substrate and a sealing film is increased and in which the occurrence of cracks in the sealing film is reduced is provided. A lower inorganic film (31) has a multilayer structure including a first inorganic layer (34), which is in contact with the substrate and an EL element, and a second inorganic layer (35). The absolute value of the film stress of the first inorganic layer (34) is less than the absolute value of the film stress of the second inorganic layer (35), and the film thickness of the first inorganic layer (34) is less than the film thickness of the second inorganic layer (35).
    Type: Application
    Filed: June 7, 2016
    Publication date: May 31, 2018
    Inventors: Mamoru ISHIDA, Tetsuya OKAMOTO, Takeshi HIRASE, Tohru SENOO, Tohru SONODA
  • Patent number: 9982339
    Abstract: A mask comprises a mask substrate having a protruding section in an opening end surface of an opening, having an acute angle defined by ?1 and ?2 of no more than 43°, and having a height from a film-formation surface on the substrate to a tip section of the protruding section greater than the thickness of the film to be formed on the film-formation surface.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: May 29, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tetsuya Okamoto, Takeshi Hirase, Tohru Senoo, Tohru Sonoda, Daichi Nishikawa, Mamoru Ishida
  • Patent number: 9982368
    Abstract: Provided is a flame-retardant fiber having improved light resistance and/or colorability. The flame-retardant fiber is a fiber including a fiber-forming polymer. The fiber-forming polymer contains a polymer blend comprising a polyetherimide polymer (A) and a thermoplastic polymer (B) having a glass transition temperature lower than that of the polymer (A); and the fiber-forming polymer further contains a functional additive (C) that provides light resistance, colorability, or both of light resistance and colorability. The mass ratio (A)/(B) of the polymer (A) to the polymer (B) is from 50/50 to 90/10, and the content of the functional additive (C) is from 0.5 to 10% by mass relative to 100% by mass of the total mass (A+B+C) of the polymer (A), the thermoplastic polymer (B), and the functional additive (C).
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: May 29, 2018
    Assignee: KURARAY CO., LTD.
    Inventors: Akihiro Uehata, Tetsuya Okamoto, Takayuki Ikeda
  • Publication number: 20180130972
    Abstract: An organic EL display device (1) includes: a plurality of organic EL elements (30) each including a lower electrode (31), an EL layer (32), and an upper portion (33); and a sealing layer (40) covering the plurality of organic EL elements (30), the organic EL display device (1) having, in a non-light-emitting portion (5) of a display region (2), at least one contact hole (34) extending through at least the upper electrode (33) and the EL layer (32) and allowing the sealing layer (40) to be in contact with a surface of a layer below the organic EL layer (32).
    Type: Application
    Filed: April 5, 2016
    Publication date: May 10, 2018
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Tohru SONODA, Takeshi HIRASE, Tetsuya OKAMOTO, Tohru SENOO, Mamoru ISHIDA
  • Publication number: 20180114690
    Abstract: The present invention provides a cleaning method by which it is possible to prevent deformation of a film formation mask (31). While the film formation mask (31) disposed between a shower head (4) and a susceptor (3) within a chamber (2) is cooled, a cleaning gas made into plasma, which cleaning gas reacts with a reaction product (32) deposited on a surface of the film formation mask (31), is blown on the film formation mask (31).
    Type: Application
    Filed: March 15, 2016
    Publication date: April 26, 2018
    Inventors: DAICHI NISHIKAWA, TAKESHI HIRASE, TETSUYA OKAMOTO, TOHRU SENOO, TOHRU SONODA, SEIJI FUJIWARA, MAMORU ISHIDA
  • Patent number: 9954045
    Abstract: Provided is an organic EL display device (electroluminescence device) including a TFT substrate (substrate) and an organic EL element (electroluminescence device) provided on the TFT substrate, wherein the organic EL display device includes a sealing layer that seals the organic EL element. The sealing layer is provided with a first, a second, and a third sealing film that are sequentially stacked from the organic EL element side, the first and third sealing films are each formed of an inorganic film, and the second sealing film is formed of an octamethylcyclotetrasiloxane film.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: April 24, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takeshi Hirase, Tetsuya Okamoto, Tohru Senoo, Tohru Sonoda, Seiji Fujiwara
  • Patent number: 9947894
    Abstract: Provided is a TFT substrate (substrate); a second electrode (vapor-deposited membrane) that is formed on the TFT substrate and includes a protruding portion; and a sealing membrane provided so as to cover the second electrode, wherein, when ? represents an absolute value of a stress of the sealing membrane, t represents a thickness of the sealing membrane, and P represents a sum of a product of an oblique side length and an oblique side slope in a minute region on an oblique side of the protruding portion, a value of an index N expressed by the expression (N=?·t·P) is less than or equal to 935 MPa·?m2.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: April 17, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tohru Sonoda, Takeshi Hirase, Tetsuya Okamoto, Tohru Senoo, Seiji Fujiwara
  • Publication number: 20180097046
    Abstract: Disclosed is an organic EL display device which includes: a first resin substrate 10a; a basecoat film 11a provided on the first resin substrate 10a; an organic EL element 18 provided over the basecoat film 11a, a first sealing film 19 covering the organic EL element 18; a second resin substrate 10b facing the first resin substrate 10a, and provided closer to the first sealing film 19 with an adhesive layer 21 interposed between the second resin substrate 10b and the first sealing film 19; and a second sealing film 23a provided outside the first sealing film 19 and enhancing adhesion between the basecoat film 11a and a stack including the first sealing film 19 and the adhesive layer 21.
    Type: Application
    Filed: April 8, 2016
    Publication date: April 5, 2018
    Inventors: Tetsuya OKAMOTO, Takeshi HIRASE, Tohru SENOO, Tohru SONODA, Mamoru ISHIDA
  • Publication number: 20180083225
    Abstract: An organic EL display device 1 includes: an organic EL element 4 provided above an element substrate 10; and a sealing film 2 formed above the element substrate 10 so as to cover the organic EL element 4, and made of silicon nitride (SiNx). The sealing film 2 is comprised of a first sealing layer 25, a second sealing layer 26 provided on the surface of the first sealing layer 25, and a third sealing layer 27 provided on the surface of the second sealing layer 26. This organic EL display device 1 is characterized in that a ratio of an SiN-group content to an NH-group content is higher in the first and third sealing layers 25 and 27 than in the second sealing layer 26 based on the absorption area ratio determined by FT-IR measurement.
    Type: Application
    Filed: March 11, 2016
    Publication date: March 22, 2018
    Inventors: Daichi NISHIKAWA, Takeshi HIRASE, Tetsuya OKAMOTO, Tohru SENOO, Tohru SONODA, Mamoru ISHIDA
  • Publication number: 20180062236
    Abstract: A directional coupler includes a first signal transmission line disposed between a signal input terminal and a signal output terminal, a coupled line disposed between a coupled output terminal and a resistance connection terminal and electromagnetically coupled to the first signal transmission line, switching terminals connected to a switching element of an IC chip, and a second signal transmission line in which a connection state with respect to the first signal transmission line is switched in accordance with a connection switching operation between the switching terminals by the switching element. The second signal transmission line is connected in parallel to the first signal transmission line in accordance with the connection switching operation between the switching terminals by the switching element when an electric signal in a first frequency band at low frequency is input to the signal input terminal.
    Type: Application
    Filed: May 13, 2016
    Publication date: March 1, 2018
    Applicant: KYOCERA Corporation
    Inventor: Tetsuya OKAMOTO
  • Publication number: 20180047940
    Abstract: An organic EL display device including a TFT substrate (substrate) and an organic EL element (electroluminescent element) that is provided on the TFT substrate includes a sealing layer that seals the organic EL element. The sealing layer is composed of a laminated structure that is constituted by an organic film and first and second inorganic films. Recessed/protruding portions are provided on surfaces of the organic film and the first and second inorganic films.
    Type: Application
    Filed: February 25, 2016
    Publication date: February 15, 2018
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Tohru SONODA, Takeshi HIRASE, Tetsuya OKAMOTO, Tohru SENOO, Daichi NISHIKAWA, Mamoru ISHIDA
  • Publication number: 20180040848
    Abstract: An organic EL display device (electroluminescence device) including a TFT substrate (substrate), an organic EL element (electroluminescence element) disposed on the TFT substrate, a first inorganic film covering the organic EL element, at least one protruding body having a frame shape, the at least one protruding body being configured by an organic film and surrounding the electroluminescence element on the first inorganic film, a second inorganic film covering the first inorganic film and the at least one protruding body, and a leveled film configured by an organic film and provided on the second inorganic film.
    Type: Application
    Filed: February 9, 2016
    Publication date: February 8, 2018
    Inventors: Takeshi HIRASE, Tetsuya OKAMOTO, Tohru SENOO, Tohru SONODA, Mamoru ISHIDA
  • Publication number: 20180040849
    Abstract: An organic EL display 1 includes a sealing film 2 provided on a plastic substrate 10 to cover an organic EL element 4. The sealing film 2 includes a first sealing layer 25 on a surface of the plastic substrate 10, three stress relief layers 26, 27, and 28 on a surface of the first sealing layer 25, and a second sealing layer 29 on a surface of the stress relief layer 28. The stress relief layers 26, 27, and 28 each have a higher coefficient of thermal expansion than the first and second sealing layers 25 and 29. The stress relief layer 27 interposed between the stress relief layers 26 and 28 has a higher coefficient of thermal expansion than the stress relief layers 26 and 28.
    Type: Application
    Filed: February 12, 2016
    Publication date: February 8, 2018
    Inventors: MAMORU ISHIDA, TETSUYA OKAMOTO, TAKESHI HIRASE, TOHRU SENOO, TOHRU SONODA, DAICHI NISHIKAWA