Patents by Inventor Katsuhiro Kikuchi

Katsuhiro Kikuchi 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: 10446072
    Abstract: A liquid crystal display device comprises: a first display panel displaying a color image; a second display panel displaying a monochrome image; and an image processor generating first image data corresponding to the color image and second image data corresponding to the monochrome image based on an input video signal. The image processor generates the first image data and the second image data such that a graph representing transmittance of the first display panel for input gradation corresponding to the input video signal and a graph representing transmittance of the second display panel for the input gradation corresponding to the input video signal intersect each other at predetermined input gradation.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: October 15, 2019
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Toshikazu Koudo, Masahiro Ishii, Katsuhiro Kikuchi, Ikuko Mori
  • 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: 10418592
    Abstract: An organic electroluminescence device according to an aspect of the disclosure includes a base material including one face provided with a recessed portion; and a light emitting element including a reflective layer provided on at least a surface of the recessed portion, a filling layer having optical transparency and filling the inside of the recessed portion with the reflective layer interposed between the filling layer and the recessed portion, a first electrode having optical transparency and provided on at least an upper-layer side of the filling layer, an organic layer containing at least a light emitting layer and provided on an upper layer of the first electrode, a second electrode having optical transparency and provided on an upper-layer side of the organic layer, and an edge cover layer covering at least an end portion of the first electrode, and in the organic electroluminescence device, an upper face of the first electrode at a position of the recessed portion is positioned below a plane including
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: September 17, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Satoshi Inoue, Katsuhiro Kikuchi, Shinichi Kawato, Eiji Koike
  • Patent number: 10416511
    Abstract: A liquid crystal display device includes: a first display panel displaying a color image, a second display panel that is disposed farther away from the observer with respect to the first display panel and displays a monochrome image, and an image processor that generates color image data and monochrome image data. The image processor includes an extension filtering unit that performs extension filtering on first monochrome image data, which is made monochrome using a maximum value in a value of each color expressing color information included in the input video signal. The extension filtering unit performs the extension filtering on the first monochrome image data using a large filter size in a larger luminance difference region, and performs the extension filtering on the first monochrome image data using a small filter size in a small luminance difference region.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: September 17, 2019
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Toshikazu Koudo, Masahiro Ishii, Katsuhiro Kikuchi, Ikuko Mori
  • 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: 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: 10401693
    Abstract: A liquid crystal module which is disposed opposite a backlight includes: a first liquid crystal panel which includes a pair of first transparent substrates; a second liquid crystal panel which is disposed between the backlight and the first liquid crystal panel and includes a pair of second transparent substrates; and a diffuser sheet disposed therebetween. A first transparent substrate that is closer to the diffuser sheet among the pair of first transparent substrates is thinner than a second transparent substrate that is closer to the diffuser sheet among the pair of second transparent substrates.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: September 3, 2019
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Katsuhiro Kikuchi, Kazuhiko Tsuda, Takao Imaoku, Yoichi Yasui
  • 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
  • Publication number: 20190258101
    Abstract: A liquid crystal display device includes: a first liquid crystal cell; a second liquid crystal cell disposed in a backlight side; and a first optical sheet and a second optical sheet both having an identical layer structure. The first optical sheet is disposed on a front surface side of the first liquid crystal cell and the second optical sheet is disposed on a back surface side of the second liquid crystal cell, or vice versa.
    Type: Application
    Filed: May 2, 2019
    Publication date: August 22, 2019
    Inventors: Yoichi YASUI, Takao IMAOKU, Katsuhiro KIKUCHI, Kazuhiko TSUDA
  • Patent number: 10384417
    Abstract: It comprises: a film made of a resin in which an aperture pattern is formed, the aperture pattern passing through the film, the aperture being with a shape and dimension corresponding to the thin-film pattern in a pre-established region for formation of the thin-film pattern on the substrate; and a metal member that has an aperture part opposite the aperture pattern with a shape and dimension larger than the aperture pattern, the metal member being provided as a thin sheet in intimate contact with one surface of the film on an outside part of the aperture pattern of the film. The film is mutually distanced and distributed, at a position where the film does not overlap the aperture pattern, into a plurality of divided parts on one surface of the metal member.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: August 20, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takashi Ochi, Shinichi Kawato, Kazuki Matsunaga, Yuhki Kobayashi, 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
  • 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: 20190155100
    Abstract: A liquid crystal display device includes: a first display panel including a first liquid crystal cell; and a second display panel including a second liquid crystal cell and is opposed to the first display panel. An irregularity structure having a predetermined external haze value is provided at an interface of an air layer existing between the first display panel and the second display panel.
    Type: Application
    Filed: November 20, 2018
    Publication date: May 23, 2019
    Inventors: Yoichi YASUI, Katsuhiro KIKUCHI
  • Publication number: 20190137817
    Abstract: A liquid crystal display device includes: a first polarizing plate, a first liquid crystal cell, a second polarizing plate, a third polarizing plate, a second liquid crystal cell, and a fourth polarizing plate, which are arranged from a front side to a back side in this order. P1, P2, P3, P4 represent degrees of polarization of the first polarizing plate, the second polarizing plate, the third polarizing plate, and the fourth polarizing plate, respectively, one of a relational expression of P1>P2, P3, P4, a relational expressions of P4>P1, P2, P3, and a relational expression of P1, P4>P2, P3 is satisfied.
    Type: Application
    Filed: November 5, 2018
    Publication date: May 9, 2019
    Inventors: Yoichi YASUI, Katsuhiro KIKUCHI, Kazuhiko TSUDA
  • 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
  • Patent number: 10276797
    Abstract: The present invention provides a vapor deposition device including a novel alignment mechanism applicable to a large substrate, a vapor deposition method, and a method for manufacturing an organic electroluminescence element. The vapor deposition device of the present invention is a vapor deposition device for performing vapor deposition while transporting a substrate in a first direction, and includes: a mask; a substrate tray including a substrate-holding portion and a guide portion protruding from the substrate-holding portion to the mask side and disposed along the first direction; at least one distance meter disposed on a first end which is one end of the mask or the guide portion; and at least one driver coupled with a second end which is the other end of the mask. The at least one distance meter is configured to measure a distance between the at least one distance meter and the guide portion or the first end when the guide portion faces the first end.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: April 30, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masahiro Ichihara, Eiichi Matsumoto, Yuhki Kobayashi, Katsuhiro Kikuchi, Shinichi Kawato, Takashi Ochi, Kazuki Matsunaga, Satoshi Inoue
  • Publication number: 20190097135
    Abstract: The present invention provides a vapor deposition device including a novel alignment mechanism applicable to a large substrate, a vapor deposition method, and a method for manufacturing an organic electroluminescence element. The vapor deposition device of the present invention is a vapor deposition device for performing vapor deposition while transporting a substrate in a first direction, and includes: a mask; a substrate tray including a substrate-holding portion and a guide portion protruding from the substrate-holding portion to the mask side and disposed along the first direction; at least one distance meter disposed on a first end which is one end of the mask or the guide portion; and at least one driver coupled with a second end which is the other end of the mask. The at least one distance meter is configured to measure a distance between the at least one distance meter and the guide portion or the first end when the guide portion faces the first end.
    Type: Application
    Filed: November 10, 2015
    Publication date: March 28, 2019
    Inventors: MASAHIRO ICHIHARA, EIICHI MATSUMOTO, YUHKI KOBAYASHI, KATSUHIRO KIKUCHI, SHINICHI KAWATO, TAKASHI OCHI, KAZUKI MATSUNAGA, SATOSHI INOUE
  • 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