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: 10319941
    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: Grant
    Filed: February 9, 2016
    Date of Patent: June 11, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takeshi Hirase, Tetsuya Okamoto, Tohru Senoo, Tohru Sonoda, Mamoru Ishida
  • Patent number: 10276829
    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: Grant
    Filed: March 11, 2016
    Date of Patent: April 30, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Daichi Nishikawa, Takeshi Hirase, Tetsuya Okamoto, Tohru Senoo, Tohru Sonoda, Mamoru Ishida
  • Patent number: 10270061
    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: Grant
    Filed: February 25, 2016
    Date of Patent: April 23, 2019
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tohru Sonoda, Takeshi Hirase, Tetsuya Okamoto, Tohru Senoo, Daichi Nishikawa, Mamoru Ishida
  • Patent number: 10263315
    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: Grant
    Filed: May 13, 2016
    Date of Patent: April 16, 2019
    Assignee: Kyocera Corporation
    Inventor: Tetsuya Okamoto
  • Patent number: 10249694
    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: Grant
    Filed: April 8, 2016
    Date of Patent: April 2, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tetsuya Okamoto, Takeshi Hirase, Tohru Senoo, Tohru Sonoda, Mamoru Ishida
  • Publication number: 20190036077
    Abstract: The present invention relates to a method including: an organic EL element formation step of forming an organic EL element (18) on an base substrate (10); and a sealing film formation step of forming a sealing film (20a) covering the organic EL element (18). The sealing film formation step includes an atomic layer deposition step of forming an inorganic barrier film (21) as the sealing film (20a) by atomic layer deposition and a molecular layer deposition step of forming an inorganic-organic composite barrier film (22) as the sealing film (20a) by molecular layer deposition.
    Type: Application
    Filed: February 13, 2017
    Publication date: January 31, 2019
    Inventors: Takeshi HIRASE, Tetsuya OKAMOTO, Tohru SENOO, Tohru SONODA, Takashi OCHI, Mamoru ISHIDA
  • Patent number: 10186525
    Abstract: The present invention provides a circuit board having excellent productivity, particularly a circuit board having excellent productivity with respect to a semiconductor layer and source layer forming step, a display device, and a process for producing a circuit board. The circuit board of the present invention is a circuit board including an oxide semiconductor layer and an electrode connected to the oxide semiconductor layer, wherein the electrode is formed by essentially laminating a layer made of a metal other than copper and a layer containing copper.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: January 22, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuichi Saito, Yohsuke Kanzaki, Yudai Takanishi, Tetsuya Okamoto, Yoshiki Nakatani, Yoshimasa Chikama
  • Publication number: 20180375056
    Abstract: An organic EL display device includes a flexible base and an organic EL element (electroluminescent element) provided on the base, and further includes an adjustment layer that has heat dissipating properties and that adjusts a neutral surface of the organic EL display device. The adjustment layer is provided on the organic EL element side relative to the center of the whole organic EL display device in the film thickness direction.
    Type: Application
    Filed: July 4, 2016
    Publication date: December 27, 2018
    Inventors: Tohru SONODA, Takeshi HIRASE, Tetsuya OKAMOTO, Tohru SENOO, Mamoru ISHIDA, Takashi OCHI
  • Patent number: 10159120
    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: Grant
    Filed: June 7, 2016
    Date of Patent: December 18, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Mamoru Ishida, Tetsuya Okamoto, Takeshi Hirase, Tohru Senoo, Tohru Sonoda
  • Publication number: 20180337368
    Abstract: A the organic EL display 1 includes: a first substrate 10; an organic EL element 4 provided above the first substrate 10; and a multilayer sealing film 2 provided above the first substrate 10 to cover the organic EL element 4, and including a barrier layer and a buffer layer lower in hardness than the barrier layer. The organic EL element covered with the multi layer sealing film includes a protrusion, and a relationship (d/h)<2 holds where h is a height of the protrusion directly below the buffer layer and d is a thickness of the buffer layer.
    Type: Application
    Filed: July 31, 2018
    Publication date: November 22, 2018
    Inventors: TOHRU SONODA, TAKESHI HIRASE, TETSUYA OKAMOTO, TOHRU SENOO, DAICHI NISHIKAWA, MAMORU ISHIDA
  • Publication number: 20180287091
    Abstract: Provided is an organic EL display device 1 that includes: a substrate 11; a first electrode 13 provided on the substrate 11; an organic EL layer 15 provided on the first electrode 13; a second electrode 16 provided on the organic EL layer 15; and a sealing film layer 17 provided so as to cover the second electrode 16. The sealing film layer 17 has protruding portions and recessed portions.
    Type: Application
    Filed: November 4, 2015
    Publication date: October 4, 2018
    Inventors: SEIJI FUJIWARA, TAKESHI HIRASE, TETSUYA OKAMOTO, TOHRU SENOO, TOHRU SONODA, DAICHI NISHIKAWA, MAMORU ISHIDA
  • Publication number: 20180277609
    Abstract: This organic EL display device is provided with: a TFT substrate; a counter substrate; an organic EL element provided on the TFT substrate; a sealing film that seals the organic EL element; a color filter layer provided on the counter substrate on a side closer to the organic EL element; and a filler layer that is filled between the sealing film and the color filter layer. This organic EL display device satisfies nM(h?1)/nMh×LM(h?1)/?(TM(h?1)2+LM(h?1)2)?1, nMh/ng×LMh/?(TMh2+LMh2)?1, ng/nCF×Lg/?(Tg2+Lg2)?1, nCF/nGL×LCF/?(TCF2+LCF2)?1, or nGL/nair×LGL/?(TGL2+LGL2)?1, while satisfying XEC/2+XBM/2??(TMi×tan ?Mi)+Tg×tan ?g+TCF×tan ?CF.
    Type: Application
    Filed: November 4, 2015
    Publication date: September 27, 2018
    Inventors: Seiji Fukiwara, Takeshi Hirase, Tetsuya Okamoto, Tohru Senoo, Tohru Sonoda
  • Publication number: 20180279489
    Abstract: The present invention provides a flexible device which is free of twist and distortion at a bent part of a flexible module, and has excellent display quality and a high level of reliability. The flexible device (1) includes a first housing (31), a second housing (41), a third housing (61), and a plurality of turning bodies (80) each of which is fixed to the first housing (31) or the second housing (41) and rolls on the third housing (61) so that a turning axis (80a) of the each of the plurality of turning bodies (80) horizontally moves.
    Type: Application
    Filed: September 20, 2016
    Publication date: September 27, 2018
    Inventors: Takashi OCHI, Takeshi HIRASE, Tetsuya OKAMOTO, Tohru SENOO, Tohru SONODA, Mamoru ISHIDA
  • Publication number: 20180269426
    Abstract: An organic EL display device including: a base material being flexible; an organic EL element (electroluminescence element) provided on the base material; a first moisture-proof film and a TFT layer provided in sequence on the base material between the base material and the organic EL element; and a first sealing film configured to seal the organic EL element. In the organic EL display device, a stress adjustment layer configured to adjust a neutral face of the organic EL display device is provided, and the neutral face is positioned between a lower face of the first moisture-proof film and an upper face of the first sealing film.
    Type: Application
    Filed: September 26, 2016
    Publication date: September 20, 2018
    Inventors: Tetsuya OKAMOTO, Takeshi HIRASE, Takashi OCHI, Tohru SENOO, Tohru SONODA, Mamoru ISHIDA
  • Publication number: 20180261787
    Abstract: In an organic EL display device that includes a base material having flexibility and an organic EL element (electroluminescence element) provided on the base material, a sealing film is formed that seals the organic EL element. Additionally, a first adjustment layer and a second adjustment layer, which are configured of materials having the same thickness and the same Young's modulus and are configured to adjust a neutral surface of the organic EL display device, are each provided at an end portion on one side and an end portion on another side of the organic EL display device in a film thickness direction T.
    Type: Application
    Filed: September 26, 2016
    Publication date: September 13, 2018
    Inventors: Mamoru ISHIDA, Tetsuya OKAMOTO, Takeshi HIRASE, Takashi OCHI, Tohru SENOO, Tohru SONODA
  • Patent number: 10069110
    Abstract: A the organic EL display 1 includes: a first substrate 10; an organic EL element 4 provided above the first substrate 10; and a multilayer sealing film 2 provided above the first substrate 10 to cover the organic EL element 4, and including a barrier layer and a buffer layer lower in hardness than the barrier layer. The organic EL element covered with the multilayer sealing film includes a protrusion, and a relationship (d/h)<2 holds where h is a height of the protrusion directly below the buffer layer and d is a thickness of the buffer layer.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: September 4, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tohru Sonoda, Takeshi Hirase, Tetsuya Okamoto, Tohru Senoo, Daichi Nishikawa, Mamoru Ishida
  • Publication number: 20180241000
    Abstract: An organic EL display device 1 includes: a flexible plastic substrate 10; a first sealing film 3 on the plastic substrate 10; an organic EL element layer 5 above the first sealing film 3; and a second sealing film 6 provided on the organic EL element layer 5, being in contact with the first sealing film 3, and covering, together with the first sealing film 3, the organic EL element layer 5. A sealer 2 is provided to cover an interface 25 between the first and second sealing films 3 and 6.
    Type: Application
    Filed: September 1, 2016
    Publication date: August 23, 2018
    Inventors: Tetsuya OKAMOTO, Takeshi HIRASE, Takashi OCHI, Tohru SENOO, Tohru SONODA, Mamoru ISHIDA
  • 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