Patents by Inventor Shinichi Kawato

Shinichi Kawato 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: 11805663
    Abstract: A light-emitting device or the like with high color reproducibility and high luminous efficiency is achieved. The light-emitting device includes a blue pixel, a green pixel, and a red pixel, and the green pixel includes, in a green-light-emitting layer that emits light, a host material that transports carriers, a fluorescence dopant, which serves as a light emission dopant that contribute to light emission, and a thermally activated assist dopant which is composed of a thermally activated delayed fluorescent material.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: October 31, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tokiyoshi Umeda, Yuto Tsukamoto, Bai Zhang, Shinichi Kawato
  • Patent number: 11437600
    Abstract: In the present embodiment, a sealing agent (50) sealing two substates contains a low melting-point glass material and is adhered to each of a first substrate (10) and a second substrate (20), a barrier rib (60), which is formed in such a manner as to surround the outer periphery of an electronic element (30), is disposed between the sealing agent (50) and the electronic element (30), and between the first substrate (10) and the second substrate (20), and the sealing agent (50) is spaced apart from the barrier rib (60). As a result, a deterioration of the electronic element, caused by the heat produced when sealing, may be prevented while the electronic element formed between the two substrates is protected from moisture and oxygen.
    Type: Grant
    Filed: November 17, 2021
    Date of Patent: September 6, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuhki Kobayashi, Shinichi Kawato, Kiyoshi Minoura, Shinji Shimada, Hiroshi Tsuchiya, Masahiro Mitani, Kohzoh Nakamura, Katsuhiko Kishimoto, Yozo Narutaki
  • Publication number: 20220077421
    Abstract: In the present embodiment, a sealing agent (50) sealing two substates contains a low melting-point glass material and is adhered to each of a first substrate (10) and a second substrate (20), a barrier rib (60), which is formed in such a manner as to surround the outer periphery of an electronic element (30), is disposed between the sealing agent (50) and the electronic element (30), and between the first substrate (10) and the second substrate (20), and the sealing agent (50) is spaced apart from the barrier rib (60). As a result, a deterioration of the electronic element, caused by the heat produced when sealing, may be prevented while the electronic element formed between the two substrates is protected from moisture and oxygen.
    Type: Application
    Filed: November 17, 2021
    Publication date: March 10, 2022
    Inventors: Yuhki KOBAYASHI, Shinichi KAWATO, Kiyoshi MINOURA, Shinji SHIMADA, Hiroshi TSUCHIYA, Masahiro MITANI, Kohzoh NAKAMURA, Katsuhiko KISHIMOTO, Yozo NARUTAKI
  • Patent number: 11222931
    Abstract: A display device includes a TFT layer, a light-emitting element layer provided in an upper layer than the TFT layer and including a first electrode, a second electrode, and a light-emitting layer of visible light, and a sealing layer covering the light-emitting element layer. An infrared light emission layer and an infrared light detection element are provided in a lower layer than the sealing layer.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: January 11, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kaoru Abe, Manabu Niboshi, Koji Yamabuchi, Shinichi Kawato
  • Patent number: 11217763
    Abstract: To provide a light-emitting device that can obtain fluorescence having a narrow spectrum more efficiently, a light-emitting device includes: a light-emitting layer in which thermally activated delayed fluorescence bodies and quantum dots are dispersed; a first electrode in a lower layer than the light-emitting layer; and a second electrode in an upper layer than the light-emitting layer, wherein a light emission spectrum of the thermally activated delayed fluorescence bodies and an absorption spectrum of the quantum dots at least partially overlap each other.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: January 4, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuto Tsukamoto, Shinichi Kawato, Tokiyoshi Umeda, Manabu Niboshi, Youhei Nakanishi, Hisayuki Utsumi, Masayuki Kanehiro, Shota Okamoto
  • Patent number: 11211579
    Abstract: In the present embodiment, a sealing agent (50) sealing two substates contains a low melting-point glass material and is adhered to each of a first substrate (10) and a second substrate (20), a barrier rib (60), which is formed in such a manner as to surround the outer periphery of an electronic element (30), is disposed between the sealing agent (50) and the electronic element (30), and between the first substrate (10) and the second substrate (20), and the sealing agent (50) is spaced apart from the barrier rib (60). As a result, a deterioration of the electronic element, caused by the heat produced when sealing, may be prevented while the electronic element formed between the two substrates is protected from moisture and oxygen.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: December 28, 2021
    Assignees: SHARP KABUSHIKI KAISHA, SAKAI DISPLAY PRODUCTS CORPORATION
    Inventors: Yuhki Kobayashi, Shinichi Kawato, Kiyoshi Minoura, Shinji Shimada, Hiroshi Tsuchiya, Masahiro Mitani, Kohzoh Nakamura, Katsuhiko Kishimoto, Yozo Narutaki
  • Publication number: 20210328198
    Abstract: The light-emitting device includes a light-emitting element in which a first electrode, a light-emitting layer, and a second electrode are sequentially layered toward a light-emitting face side. The plurality of light-emitting elements include a first light-emitting element configured to emit light of a first color, a second light-emitting element configured to emit light of a second color different from the first color, and a third light-emitting element configured to emit light of a third color different from the first color and the second color. The light-emitting device includes a light absorption layer on the light-emitting face side of the second electrode, in plane view, in common at positions where the light absorption layer is superimposed on the plurality of light-emitting elements, and the light absorption layer absorbs the light of the first color, the light of the second color, and the light of the third color.
    Type: Application
    Filed: September 11, 2018
    Publication date: October 21, 2021
    Inventors: TOKIYOSHI UMEDA, YUTO TSUKAMOTO, BAI ZHANG, SHINICHI KAWATO
  • Publication number: 20210320151
    Abstract: The light-emitting device includes a light-emitting element in which a first electrode, a light-emitting layer, and a second electrode are sequentially layered toward a side of a light-emitting face. Further, the light-emitting device includes, on a side of the light-emitting face of the second electrode, a complementary color light absorption layer configured to absorb complementary color light of light emitted by the light-emitting element.
    Type: Application
    Filed: September 11, 2018
    Publication date: October 14, 2021
    Inventors: TOKIYOSHI UMEDA, YUTO TSUKAMOTO, BAI ZHANG, SHINICHI KAWATO
  • Publication number: 20210135137
    Abstract: To provide a light-emitting device that easily generates energy transition to fluorescent materials having a peak of the light emission spectrum in the deep-blue region and has improved efficiency of light emission, provided is a light-emitting device including a light-emitting layer in which quantum dots and light emitters being phosphors or phosphorescent members are dispersed, a first electrode in a lower layer than the light-emitting layer, and a second electrode in an upper layer than the light-emitting layer, wherein a light emission spectrum of the quantum dots and an absorption spectrum of the light emitters at least partially overlap each other.
    Type: Application
    Filed: September 5, 2017
    Publication date: May 6, 2021
    Inventors: YUTO TSUKAMOTO, SHINICHI KAWATO, TOKIYOSHI UMEDA, MANABU NIBOSHI, YOUHEI NAKANISHI, HISAYUKI UTSUMI, MASAYUKI KANEHIRO, SHOTA OKAMOTO
  • Patent number: 10991781
    Abstract: An organic EL display device includes a light modulating unit layer, a TFT layer, and a plurality of organic EL elements layered in the stated order. A top-emitting single-sided display emitting light emitted from a light emitting layer from an upper electrode side and a double-sided display emitting light emitted from the light emitting layer from each of the upper electrode side and a lower electrode side are electrically switched.
    Type: Grant
    Filed: May 29, 2017
    Date of Patent: April 27, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuto Tsukamoto, Shinichi Kawato, Manabu Niboshi, Hiroshi Imada, Tokiyoshi Umeda, Bai Zhang, Tomoaki Jo
  • Patent number: 10957815
    Abstract: To provide a light-emitting device for achieving fluorescence emission with higher efficiency and longer life, a light-emitting device includes an exciton generation layer in which quantum dots are dispersed, a light-emitting layer in which light emitters, which are phosphors or phosphorescent members, are dispersed, the light-emitting layer adjoining the exciton generation layer in a vertical direction, a first electrode located on a lower side of the exciton generation layer and the light-emitting layer, and a second electrode located on an upper side of the exciton generation layer and the light-emitting layer, and the light emission spectrum of the quantum dots and the absorption spectrum of the light emitters at least partially overlap.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: March 23, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuto Tsukamoto, Shinichi Kawato, Tokiyoshi Umeda, Manabu Niboshi, Youhei Nakanishi, Hisayuki Utsumi, Masayuki Kanehiro, Shota Okamoto
  • Publication number: 20210083218
    Abstract: A light-emitting device or the like with high color reproducibility and high luminous efficiency is achieved. The light-emitting device includes a blue pixel, a green pixel, and a red pixel, and the green pixel includes, in a green-light-emitting layer that emits light, a host material that transports carriers, a fluorescence dopant, which serves as a light emission dopant that contribute to light emission, and a thermally activated assist dopant which is composed of a thermally activated delayed fluorescent material.
    Type: Application
    Filed: March 27, 2018
    Publication date: March 18, 2021
    Inventors: TOKIYOSHI UMEDA, YUTO TSUKAMOTO, BAI ZHANG, SHINICHI KAWATO
  • Publication number: 20210066630
    Abstract: To provide a light-emitting device that can obtain fluorescence having a narrow spectrum more efficiently, a light-emitting device includes: a light-emitting layer in which thermally activated delayed fluorescence bodies and quantum dots are dispersed; a first electrode in a lower layer than the light-emitting layer and a second electrode in an upper layer than the light-emitting layer, wherein a light emission spectrum of the thermally activated delayed fluorescence bodies and an absorption spectrum of the quantum dots at least partially overlap each other.
    Type: Application
    Filed: September 5, 2017
    Publication date: March 4, 2021
    Inventors: YUTO TSUKAMOTO, SHINICHI KAWATO, TOKIYOSHI UMEDA, MANABU NIBOSHI, YOUHEI NAKANISHI, HISAYUKI UTSUMI, MASAYUKI KANEHIRO, SHOTA OKAMOTO
  • Patent number: 10923678
    Abstract: A reflective liquid crystal display device (30) including a reflection electrode (31), a liquid crystal layer (32), and a counter electrode (33) is formed above an insulating layer (25) in a first region (R) of a TFT substrate (20). An organic EL display device (40) including a first electrode (41), an organic layer (43), and a second electrode (44) is formed on the insulating layer (25) of the TFT substrate (20) in a second region (T). A coating layer (45) is formed at least on a surface of the organic EL display device (40) so as to wrap the second electrode (44) and the organic layer (43) of the organic EL display device (40). A part of the coating layer (45) is in contact with the insulating layer (25). As a result, a complex display apparatus capable of preventing the organic layer from deteriorating and excellent in reliability can be obtained.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: February 16, 2021
    Assignees: Sakai Display Products Corporation, Sharp Kabushiki Kaisha
    Inventors: Yozo Narutaki, Katsuhiko Kishimoto, Shinji Shimada, Masahiro Mitani, Kohzoh Nakamura, Kiyoshi Minoura, Hiroshi Tsuchiya, Yuhki Kobayashi, Shinichi Kawato
  • Patent number: 10892432
    Abstract: An organic EL display device includes a blue pixel, and a second pixel configured to output light having a peak wavelength longer than that of blue light. The blue pixel includes a blue phosphorescent luminescent material containing layer and a blue fluorescent luminescent material containing layer as common layers common to the plurality of pixels, and the second pixel includes a second phosphorescent luminescent material containing layer provided in each of the second pixel, adjacently to the common layers at the side of an anode from the common layers.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: January 12, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Manabu Niboshi, Shinichi Kawato, Tokiyoshi Umeda, Yuto Tsukamoto, Hiroshi Imada
  • Publication number: 20200411621
    Abstract: An organic EL display device includes a light modulating unit layer, a TFT layer, and a plurality of organic EL elements layered in the stated order. A top-emitting single-sided display emitting light emitted from a light emitting layer from an upper electrode side and a double-sided display emitting light emitted from the light emitting layer from each of the upper electrode side and a lower electrode side are electrically switched.
    Type: Application
    Filed: May 29, 2017
    Publication date: December 31, 2020
    Inventors: Yuto TSUKAMOTO, Shinichi KAWATO, Manabu NIBOSHI, Hiroshi IMADA, Tokiyoshi UMEDA, Bai ZHANG, Tomoaki JO
  • Patent number: 10873050
    Abstract: An organic EL display device with higher resolution, suppressed power consumption while being driven and low manufacturing cost, and no color mixing and color shifting between subpixels adjacent to each other is provided. In a B subpixel, a first separation layer is provided between a common blue-light-emitting layer and a common green-light-emitting layer. In a G subpixel, a second separation layer is provided between the common green-light-emitting layer and a common red-light-emitting layer.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: December 22, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuto Tsukamoto, Seiichi Mitsui, Shinichi Kawato, Manabu Niboshi, Eiji Koike, Masanori Ohara, Asae Ito
  • Publication number: 20200388780
    Abstract: An organic EL display device includes a blue pixel, and a second pixel configured to output light having a peak wavelength longer than that of blue light. The blue pixel includes a blue phosphorescent luminescent material containing layer and a blue fluorescent luminescent material containing layer as common layers common to the plurality of pixels, and the second pixel includes a second phosphorescent luminescent material containing layer provided in each of the second pixel, adjacently to the common layers at the side of an anode from the common layers.
    Type: Application
    Filed: September 26, 2017
    Publication date: December 10, 2020
    Inventors: Manabu NIBOSHI, Shinichi KAWATO, Tokiyoshi UMEDA, Yuto TSUKAMOTO, Hiroshi IMADA
  • Publication number: 20200381585
    Abstract: To provide a light-emitting device for achieving fluorescence emission with higher efficiency and longer life, a light-emitting device includes an exciton generation layer in which quantum dots are dispersed, a light-emitting layer in which light emitters, which are phosphors or phosphorescent members, are dispersed, the light-emitting layer adjoining the exciton generation layer in a vertical direction, a first electrode located on a lower side of the exciton generation layer and the light-emitting layer, and a second electrode located on an upper side of the exciton generation layer and the light-emitting layer, and the light emission spectrum of the quantum dots and the absorption spectrum of the light emitters at least partially overlap.
    Type: Application
    Filed: September 5, 2017
    Publication date: December 3, 2020
    Inventors: Yuto TSUKAMOTO, Shinichi KAWATO, Tokiyoshi UMEDA, Manabu NIBOSHI, Youhei NAKANISHI, Hisayuki UTSUMI, Masayuki KANEHIRO, Shota OKAMOTO
  • Publication number: 20200303670
    Abstract: An organic EL display device with higher resolution, suppressed power consumption while being driven and low manufacturing cost, and no color mixing and color shifting between subpixels adjacent to each other is provided. In a B subpixel, a first separation layer is provided between a common blue-light-emitting layer and a common green-light-emitting layer. In a G subpixel, a second separation layer is provided between the common green-light-emitting layer and a common red-light-emitting layer.
    Type: Application
    Filed: March 22, 2017
    Publication date: September 24, 2020
    Inventors: Yuto TSUKAMOTO, Seiichi MITSUI, Shinichi KAWATO, Manabu NIBOSHI, Eiji KOIKE, Masanori OHARA, Asae ITO