Patents by Inventor Yuto TSUKAMOTO

Yuto TSUKAMOTO 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: 20190312220
    Abstract: Provided is a display apparatus where: a red light-emitting layer is formed as a layer that is common to a first subpixel, a second subpixel, and a third subpixel; a blue light-emitting layer is formed as a layer that is common to the first subpixel and the second subpixel; and the green light-emitting layer is formed only in the second subpixel.
    Type: Application
    Filed: October 6, 2017
    Publication date: October 10, 2019
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Yuto TSUKAMOTO, Shinichi KAWATO, Manabu NIBOSHI, Hiroshi IMADA, Tokiyoshi UMEDA, Bai ZHANG, Tomoaki JO
  • Publication number: 20190305054
    Abstract: Provided is a display apparatus where: a green light-emitting layer is common to a first subpixel, a second subpixel, and a third subpixel; a blue light-emitting layer is formed solely in the first subpixel; the red light-emitting layer is formed solely in the third subpixel; and in the first subpixel a separation layer is formed between the blue light-emitting layer and the green light-emitting layer.
    Type: Application
    Filed: September 25, 2017
    Publication date: October 3, 2019
    Inventors: Yuto TSUKAMOTO, Shinichi KAWATO, Manabu NIBOSHI, Hiroshi IMADA, Tokiyoshi UMEDA, Bai ZHANG, Tomoaki JO
  • Patent number: 10431634
    Abstract: An organic electroluminescence device includes a base material including a recessed portion on a surface side, a reflective layer disposed at least on a surface of the recessed portion, a filling layer having optical transparency, the filling layer being disposed in the recessed portion through the reflective layer, a first electrode having optical transparency, the first electrode being disposed at least on an upper-layer side of the filling layer, an organic layer including at least a light emitting layer, the organic layer being disposed on an upper-layer side of the first electrode, and a second electrode having optical transparency and light reflectivity, the second electrode being disposed on an upper-layer side of the organic layer. The filling layer includes at least one type of phosphor.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: October 1, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hideki Uchida, Katsuhiro Kikuchi, Yoshiyuki Isomura, Masanori Ohara, Satoshi Inoue, Eiji Koike, Yuto Tsukamoto, Asae Ito
  • Patent number: 10411223
    Abstract: The electroluminescence device of the disclosure includes: a base material provided with a recessed portion; a light-emitting element including a reflective layer provided on the front surface of the recessed portion, a filling layer having optical transparency and filling an inside of the recessed portion with the reflective layer interposed therebetween, a first electrode having optical transparency provided on the filling layer, an organic layer including a light-emitting layer provided on the first electrode, and a second electrode having optical transparency provided on the organic layer, and an active element connected to the light-emitting element, wherein a display region includes a plurality of unit regions divided from one another, the unit regions include a plurality of the light-emitting elements and the active elements configured to control the light emission of the plurality of light-emitting elements, and the reflective layer of at least one of the light-emitting elements of the plurality of re
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: September 10, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Satoshi Inoue, Katsuhiro Kikuchi, Hideki Uchida, Yoshiyuki Isomura, Masanori Ohara, Yuto Tsukamoto, Eiji Koike
  • Patent number: 10411211
    Abstract: An organic EL element (10) includes a first light-emitting layer (33a) having the shortest emission peak wavelength of a light-emitting layer (33) and containing a host material and a TTF material or at least the TTF material, a second light-emitting layer (33b) containing at least a TADF material, a third light-emitting layer (33c) having the longest emission peak wavelength of the light-emitting layer (33) and containing at least fluorescent material. The excited triplet level of the TTF material is lower than the excited triplet level of the TADF material.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: September 10, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuto Tsukamoto, Katsuhiro Kikuchi, Shinichi Kawato, Manabu Niboshi, Eiji Koike, Asae Ito
  • Patent number: 10403841
    Abstract: An organic EL element is provided that has a high light emission efficiency and that emits a plurality of light beams having respective wavelength ranges different from one another, the light beams including short wavelength light having a high chromaticity. An organic EL element (1) includes an exciton generating layer (7) and a guest layer (8) that are adjacent to each other.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: September 3, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Asae Ito, Yuto Tsukamoto, Manabu Niboshi, Eiji Koike, Shinichi Kawato, Katsuhiro Kikuchi
  • Patent number: 10381600
    Abstract: An organic electroluminescence device includes a base material including a recessed portion on one face side, and a light emitting element. The light emitting layer including a reflective layer disposed at least on a surface of the recessed portion, a filling layer that has optical transparency and is filled and disposed in the recessed portion with the reflective layer interposed between the recessed portion and the filling layer, a first electrode that has optical transparency and is disposed at least on an upper-layer side of the filling layer, an organic layer that includes at least a light emitting layer and is disposed on an upper layer of the first electrode, and a second electrode that has optical transparency and is disposed on an upper-layer side of the organic layer. The organic electroluminescence device includes a display region divided into a plurality of unit regions separated from each other. The unit regions each has a light emitting area and a non emissive area that are partitioned.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: August 13, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hideki Uchida, Katsuhiro Kikuchi, Yoshiyuki Isomura, Eiji Koike, Satoshi Inoue, Yuto Tsukamoto, Masanori Ohara, Asae Ito
  • Patent number: 10381588
    Abstract: To provide an organic EL element having good injection properties and transport properties of a carrier. Included are: an InGaZnO layer with a composition rich in In2O3 as a transparent electrode contacting a negative electrode; an InGaZnO layer with a stoichiometric ratio of In:Ga:Zn:O=1:1:1:4 as an electron injecting layer; and an InGaZnO layer with a composition rich in Ga2O3 as an electron transport layer contacting a light emitting layer.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: August 13, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Manabu Niboshi, Hideki Uchida, Shinji Nakajima, Yoshiyuki Isomura, Eiji Koike, Yuto Tsukamoto, Asae Ito
  • Publication number: 20190237514
    Abstract: In this manufacturing method, in a blue fluorescent light-emitting layer formation step, a blue fluorescent light-emitting layer is formed in both a subpixel and a subpixel; in a green fluorescent light-emitting layer formation step, a green fluorescent light-emitting layer is formed in both the subpixel and a subpixel; and in a red light-emitting layer formation step, a red light-emitting layer is formed in both the subpixel and a subpixel. In at least two of the abovementioned steps, linear vapor deposition is performed using a slitted mask having an opening that is provided so as to extend across a plurality of pixels.
    Type: Application
    Filed: July 21, 2017
    Publication date: August 1, 2019
    Inventors: Yuto TSUKAMOTO, Seiichi MITSUI, Shinichi KAWATO, Satoshi INOUE, Yuhki KOBAYASHI, Takashi OCHI
  • Publication number: 20190228686
    Abstract: Provided is a display apparatus where: a blue light-emitting layer is formed as a layer that is common to a first subpixel, a second subpixel, and a third subpixel; a green light-emitting layer is formed as a layer that is common to the second subpixel and the third subpixel; and the red light-emitting layer is formed only in the third subpixel.
    Type: Application
    Filed: September 21, 2017
    Publication date: July 25, 2019
    Inventors: Yuto TSUKAMOTO, Shinichi KAWATO, Manabu NIBOSHI, Hiroshi IMADA, Tokiyoshi UMEDA, Bai ZHANG, Tomoaki JO
  • Publication number: 20190189948
    Abstract: The organic EL element (10) at least includes, between a first electrode (2) and a second electrode (4), at least one layer of an exciton generating layer (33) which contains at least one type of TADF material as a host material and at least one layer of a fluorescent emission layer (34) which contains at least one type of fluorescent emission material.
    Type: Application
    Filed: February 12, 2019
    Publication date: June 20, 2019
    Inventors: Yuto TSUKAMOTO, Katsuhiro KIKUCHI, Hideki UCHIDA, Eiji KOIKE, Satoshi INOUE, Masanori OHARA, Kazuki MATSUNAGA
  • Patent number: 10311791
    Abstract: The purpose of the present invention is to suppress the fluctuation of a data line voltage that occurs when an analog voltage signal is sampled and held in a data line in a display device provided with a current-driven display element. Transistors (SWr, SWG, SWb) of each demultiplexer (252) are successively switched on, for each predetermined period, in a selection period of a write control line (SW_LR(i)). In a period when the transistor (SWr) is switched on, an analog video signal (Dj) from a data voltage output unit circuit (211d) is applied to a data line (SLrj) and a pixel circuit (50r). When the transistor SWr is then switched off, the voltage held by the data line (SLrj) decreases below the voltage of the analog video signal (Dj) due to a parasitic capacitance (Cssdr). However, the voltage of a voltage fluctuation compensation line (G3_Cnt (i)) changes from a low level to a high level within the selection period.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: June 4, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masanori Ohara, Hideki Uchida, Katsuhiro Kikuchi, Satoshi Inoue, Yuto Tsukamoto, Eiji Koike, Kazuo Takizawa, Noboru Noguchi, Noritaka Kishi
  • Patent number: 10305056
    Abstract: The present invention provides an organic EL element with high luminous efficacy and high productivity, and an organic EL panel including the organic EL element. The organic electroluminescent element includes, in the given order: an anode; a hole transport layer; a light-emitting unit; an electron transport layer; and a cathode, the light-emitting unit including a first luminescent dopant layer, a first blocking layer, a second luminescent dopant layer, and a mixed light-emitting layer in the given order, the mixed light-emitting layer containing a first luminescent host material and a first luminescent dopant material, the first luminescent dopant layer substantially consisting of a second luminescent dopant material, the second luminescent dopant layer substantially consisting of a third luminescent dopant material, the first blocking layer containing a second luminescent host material.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: May 28, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kazuki Matsunaga, Katsuhiro Kikuchi, Hideki Uchida, Masanori Ohara, Satoshi Inoue, Eiji Koike, Yuto Tsukamoto
  • Publication number: 20190157360
    Abstract: In this manufacturing method, in a blue fluorescent light-emitting layer formation step, a blue fluorescent light-emitting layer is formed in both a subpixel and a subpixel; in a green fluorescent light-emitting layer formation step, a green fluorescent light-emitting layer is formed in both the subpixel and a subpixel; and in a red light-emitting layer formation step, a red light-emitting layer is formed in both the subpixel and a subpixel. In at least two of the abovementioned steps, linear vapor deposition is performed using a slit mask having an opening that is provided so as to extend across a plurality of pixels.
    Type: Application
    Filed: July 21, 2017
    Publication date: May 23, 2019
    Inventors: Yuto TSUKAMOTO, Seiichi MITSUI, Shinichi KAWATO, Satoshi INOUE, Yuhki KOBAYASHI, Takashi OCHI
  • Patent number: 10276819
    Abstract: The organic EL element (10) at least includes, between a first electrode (2) and a second electrode (4), at least one layer of an exciton generating layer (33) which contains at least one type of TADF material as a host material and at least one layer of a fluorescent emission layer (34) which contains at least one type of fluorescent emission material.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: April 30, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuto Tsukamoto, Katsuhiro Kikuchi, Hideki Uchida, Eiji Koike, Satoshi Inoue, Masanori Ohara, Kazuki Matsunaga
  • Publication number: 20190115398
    Abstract: A blue fluorescent light-emitting layer is provided in common for a subpixel and a subpixel, a green fluorescent light-emitting layer is provided in common for the subpixel and a subpixel, and a red light-emitting layer is provided in common for the subpixel and a subpixel. An opposing surface distance is less than or equal to a Förster radius, and in the subpixel, the green fluorescent light-emitting layer and the red light-emitting layer are layered with a separation layer interposed therebetween.
    Type: Application
    Filed: April 7, 2017
    Publication date: April 18, 2019
    Inventors: Yuto TSUKAMOTO, Seiichi MITSUI, Shinichi KAWATO, Satoshi INOUE, Yuhki KOBAYASHI, Takashi OCHI
  • Publication number: 20190081268
    Abstract: Provided is an EL element utilizing upconversion light emission involving highly efficient triplet-triplet annihilation. A blue-light-emitting layer includes an ionic liquid, a red phosphorescent material, and a blue fluorescent material. The blue fluorescent material and the red phosphorescent material are homogeneously dispersed in a liquid film of the ionic liquid.
    Type: Application
    Filed: March 16, 2017
    Publication date: March 14, 2019
    Inventors: Asae ITO, Manabu NIBOSHI, Yuto TSUKAMOTO, Shinichi KAWATO
  • Publication number: 20190081112
    Abstract: A blue fluorescent light-emitting layer is provided in common for first and second subpixels, a green fluorescent light-emitting layer is provided in common for second and third subpixels, and a red light-emitting layer is provided in common for the second and fourth subpixels. In the second subpixel, an opposing surface distance is less than or equal to a Förster radius, and at least of the blue fluorescent light-emitting layer and the green fluorescent light-emitting layer are layered with the red light-emitting layer with a separation layer interposed therebetween.
    Type: Application
    Filed: April 26, 2017
    Publication date: March 14, 2019
    Inventors: Yuto TSUKAMOTO, Seiichi MITSUI, Shinichi KAWATO, Satoshi INOUE, Yuhki KOBAYASHI, Takashi OCHI
  • Patent number: 10230065
    Abstract: In an organic EL element equipped with an anode, a cathode, a luminescent layer, and an electron transport layer, the cathode includes a reflecting electrode. The electron transport layer includes a doped electron transport layer to which an n-type dopant material is added and a non-doped electron transport layer to which an n-type dopant material is not added. A first reflection surface that reflects light from the luminescent layer is provided at an interface between the doped electron transport layer and the non-doped electron transport layer.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: March 12, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yoshiyuki Isomura, Katsuhiro Kikuchi, Shinichi Kawato, Hideki Uchida, Manabu Niboshi, Satoshi Inoue, Yuto Tsukamoto
  • Patent number: 10223966
    Abstract: An organic EL display device includes a plurality of sub-pixels each including a first organic EL element and a second organic EL element, a temperature information detector configured to measure current-voltage characteristics of the second organic EL element included in each of the sub-pixels, and to detect, on the basis of a result of the measurement, temperature information of the second organic EL element included in each of the sub-pixels, and a correction unit configured to correct a driving signal of the first organic EL element included in each of the sub-pixels on the basis of the temperature information of the second organic EL element included in the same sub-pixel as the sub-pixel including the relevant first organic EL element.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: March 5, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Satoshi Inoue, Katsuhiro Kikuchi, Hideki Uchida, Manabu Niboshi, Yoshiyuki Isomura, Yuto Tsukamoto