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).

  • Publication number: 20180187299
    Abstract: Provided is a line source that can achieve uniform film thickness distribution and also achieve high use efficiency of vapor deposition materials. A line source (10) has slit nozzles (1) having a slit nozzle's length-to-width ratio of 4 to 50, a width of 1 mm to 5 mm, and a depth of 5 mm to 20 mm.
    Type: Application
    Filed: July 21, 2016
    Publication date: July 5, 2018
    Inventors: Shinichi KAWATO, Katsuhiro KIKUCHI, Manabu NIBOSHI, Satoshi INOUE, Yuhki KOBAYASHI
  • Patent number: 10008550
    Abstract: A display according to an embodiment of the present invention includes an element substrate, a display section including a plurality of pixels each including a plurality of light-emitting elements, and monitoring elements for detecting the temperature of the light-emitting elements. The light-emitting elements each include an anode, a cathode, and a light-emitting layer placed between the anode and the cathode. The monitoring elements each include an anode, a cathode, and a light emission-suppressing layer containing the same light-emitting material as the light-emitting layer. When voltages are supplied to the monitoring elements, the light emission-suppressing layers do not emit any visible light or emit visible light with a luminance lower than the case where the same voltages as the above voltages are applied to the light-emitting elements.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: June 26, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hideki Uchida, Katsuhiro Kikuchi, Satoshi Inoue, Manabu Niboshi, Yoshiyuki Isomura, Yuto Tsukamoto
  • Publication number: 20180174507
    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: Application
    Filed: June 29, 2016
    Publication date: June 21, 2018
    Inventors: Masanori OHARA, Hideki UCHIDA, Katsuhiro KIKUCHI, Satoshi INOUE, Yuto TSUKAMOTO, Eiji KOIKE, Kazuo TAKIZAWA, Noboru NOGUCHI, Noritaka KISHI
  • Publication number: 20180151103
    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: Application
    Filed: November 22, 2017
    Publication date: May 31, 2018
    Inventors: Toshikazu KOUDO, Masahiro ISHII, Katsuhiro KIKUCHI, Ikuko MORI
  • Patent number: 9978812
    Abstract: The organic EL display panel includes: a substrate; and an organic electroluminescent element disposed on the substrate, the organic electroluminescent element including, in the given order: an anode; a light-emitting layer; and a cathode, the light-emitting layer including multiple light-emitting portions, the multiple light-emitting portions each providing a luminescent color different from the luminescent color of the adjacent light-emitting portion, the multiple light-emitting portions each containing a luminescent dopant material, the concentration of the luminescent dopant material in each light-emitting portion changing in the thickness direction of the light-emitting portion and being at a local maximum in the vicinity of a first interface on the anode side and in the vicinity of a second interface on the cathode side, the local maximum in each light-emitting portion being 20% by weight or higher of the total weight of the light-emitting portion.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: May 22, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shinichi Kawato, Takashi Ochi, Satoshi Inoue, Yuhki Kobayashi, Kazuki Matsunaga, Katsuhiro Kikuchi
  • Patent number: 9966550
    Abstract: The present invention provides an organic EL element having high luminous efficacy and productivity and an organic EL panel including the organic EL element. The organic electroluminescent element of the present invention includes, in the given order, an anode, a hole-transport layer, a luminescent unit, an electron-transport layer, and a cathode. The luminescent unit includes a mixed light-emitting layer and includes a luminescent dopant layer at least between the hole-transport layer and the mixed light-emitting layer or between the electron-transport layer and the mixed light-emitting layer. The mixed light-emitting layer contains a first luminescent host material and a first luminescent dopant material. The luminescent dopant layer consists essentially of a second luminescent dopant material and is thinner than the mixed light-emitting layer.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: May 8, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuto Tsukamoto, Katsuhiro Kikuchi, Shinichi Kawato, Hideki Uchida, Manabu Niboshi, Satoshi Inoue, Yoshiyuki Isomura
  • Patent number: 9947900
    Abstract: An organic EL device according to the present invention includes: a first structure section; and a second structure section. The first structure section includes: a recess; a reflection layer provided along an inner surface of the recess; a filling layer filled at an inner side of the recess via the reflection layer; a first electrode; an organic layer including a light-emitting layer; and a second electrode. The second structure section includes: a reflection layer provided on a flat surface of the base material; a first electrode; an organic layer including a light-emitting layer; and a second electrode.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: April 17, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Eiji Koike, Hideki Uchida, Katsuhiro Kikuchi, Yoshiyuki Isomura, Satoshi Inoue, Yuto Tsukamoto, Masanori Ohara, Kazuki Matsunaga
  • Publication number: 20180097195
    Abstract: An organic electroluminescence device according to one aspect of the present invention includes: a substrate; a thin film transistor provided above the substrate; a flattening layer provided above the thin film transistor and including a contact hole which is open on a side opposite to the substrate; a reflecting layer provided along at least a surface of the contact hole; a light-transmitting filling layer configured to fill an inside of the contact hole with the reflecting layer therebetween; and an organic EL element formed above the flattening layer and a contact hole top.
    Type: Application
    Filed: April 15, 2016
    Publication date: April 5, 2018
    Inventors: Satoshi INOUE, Katsuhiro KIKUCHI, Hideki UCHIDA, Eiji KOIKE, Masanori OHARA, Yuto TSUKAMOTO, Yoshiyuki ISOMURA
  • Publication number: 20180059465
    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: Application
    Filed: August 28, 2017
    Publication date: March 1, 2018
    Inventors: Toshikazu KOUDO, Masahiro ISHII, Katsuhiro KIKUCHI, Ikuko MORI
  • Patent number: 9893283
    Abstract: The present invention relates to a vapor deposition device for forming a film on a substrate, including: a vapor deposition chamber; a vapor deposition unit including a vapor deposition mask provided with an opening for pattern formation; and a transport mechanism that is configured to transfer at least one of the substrate and the vapor deposition unit relative to the other in a first direction perpendicular to the normal direction of the vapor deposition mask and that is configured to cause the substrate to rest temporarily at a resting position relative to the vapor deposition unit. The substrate includes a vapor-deposition-target region, and the region does not overlap the opening of the vapor deposition mask when the substrate is at the resting position. The vapor deposition chamber is provided with a first vent and a second vent.
    Type: Grant
    Filed: November 27, 2014
    Date of Patent: February 13, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuhki Kobayashi, Katsuhiro Kikuchi, Shinichi Kawato, Takashi Ochi, Satoshi Inoue, Kazuki Matsunaga, Eiichi Matsumoto, Masahiro Ichihara
  • Publication number: 20180031897
    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: Application
    Filed: March 29, 2017
    Publication date: February 1, 2018
    Inventors: Katsuhiro KIKUCHI, Kazuhiko TSUDA, Takao IMAOKU, Yoichi YASUI
  • Publication number: 20180019424
    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: Application
    Filed: January 19, 2016
    Publication date: January 18, 2018
    Inventors: KAZUKI MATSUNAGA, KATSUHIRO KIKUCHI, HIDEKI UCHIDA, MASANORI OHARA, SATOSHI INOUE, EIJI KOIKE, YUTO TSUKAMOTO
  • Publication number: 20180009190
    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: Application
    Filed: January 19, 2016
    Publication date: January 11, 2018
    Applicant: Sharp Kabushiki Kaisha
    Inventors: TAKASHI OCHI, SHINICHI KAWATO, KAZUKI MATSUNAGA, YUHKI KOBAYASHI, KATSUHIRO KIKUCHI
  • Patent number: 9859340
    Abstract: An organic electroluminescent display device of the present invention includes: a substrate; an anode (first electrode); an organic layer including a light-emitting layer; a cathode (second electrode); a reflective layer and a semi-transmissive reflective layer provided to interpose an organic layer; and a plurality of sub-pixels of different colors in which light emitted from the organic layer is repeatedly reflected between the reflective layer and the semi-transmissive reflective layer such that light of a specific wavelength is enhanced and emitted. The substrate is bent or curved, and an optical path length between the reflective layer and the cathode (semi-transmissive reflective layer) in a sub-pixel of a predetermined color of a flat region (first region) is different from an optical path length between the reflective layer and the cathode (semi-transmissive reflective layer) in a sub-pixel of a same color as the predetermined color of a bent region (second region).
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: January 2, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Katsuhiro Kikuchi, Yoshiyuki Isomura, Yuto Tsukamoto, Manabu Niboshi, Shinichi Kawato, Satoshi Inoue
  • Patent number: 9845530
    Abstract: A mask for a vapor deposition apparatus includes an outer frame; a first bar disposed on an inner side of the outer frame and fixed to the outer frame; and a pattern forming portion disposed on the outer frame and the first bar and fixed to the outer frame. The pattern forming portion includes a plurality of mask openings for pattern formation. Each of the plurality of mask openings is disposed along a first direction. The plurality of mask openings are disposed in a second direction orthogonal to the first direction. The first bar is positioned between adjacent two mask openings among the plurality of mask openings when viewed along a third direction orthogonal to the first direction and the second direction, and is in contact with the pattern forming portion.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: December 19, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Satoshi Inoue, Katsuhiro Kikuchi, Shinichi Kawato, Takashi Ochi, Yuhki Kobayashi, Kazuki Matsunaga, Eiichi Matsumoto, Masahiro Ichihara
  • Patent number: 9831471
    Abstract: The method for producing an organic EL display panel includes, in the given order, the steps of: forming a first light-emitting layer by forming a film from a luminescent material of a first luminescent color in a first pixel; performing the etching treatment to remove, while leaving the first light-emitting layer to remain, a thin film of the luminescent material of the first luminescent color which adhered to the second pixel in the step; forming a second light-emitting layer by forming a film from a luminescent material of a second luminescent color different from the first luminescent color in the second pixel; and performing the etching treatment to remove, while leaving the second light-emitting layer to remain, a thin film of the luminescent material of the second luminescent color which adhered to the first pixel in the step.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: November 28, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazuki Matsunaga, Katsuhiro Kikuchi, Shinichi Kawato, Satoshi Inoue, Yuhki Kobayashi, Takashi Ochi
  • Publication number: 20170338434
    Abstract: The organic electroluminescent element of the present invention includes, in the given order: an anode; a light-emitting layer; and a cathode, the light-emitting layer including a luminescent dopant layer and a luminescent host layer, the luminescent dopant layer containing a luminescent dopant material and substantially no luminescent host material, the luminescent host layer containing a luminescent host material and substantially no luminescent dopant material.
    Type: Application
    Filed: August 10, 2017
    Publication date: November 23, 2017
    Inventors: Yuto TSUKAMOTO, Katsuhiro KIKUCHI, Manabu NIBOSHI, Yoshiyuki ISOMURA, Hideki UCHIDA, Ayataka ENDO, Asae ITO
  • Publication number: 20170324063
    Abstract: A light-emitting element includes at least a first trench portion having an indented shape within a single light-emitting region. In the first trench portion, a first electrode, an EL layer, and a second electrode are layered in this order and in contact with each other. One of the first electrode and the second electrode includes a reflective electrode, and concave-convex portions of the submicron order configured to diffract surface plasmons are provided on the surface of the reflective electrode on a side closer to the EL layer.
    Type: Application
    Filed: November 20, 2015
    Publication date: November 9, 2017
    Inventors: MASANORI OHARA, HIDEKI UCHIDA, KATSUHIRO KIKUCHI, SATOSHI INOUE, YUTO TSUKAMOTO, KAZUKI MATSUNAGA, EIJI KOIKE
  • Publication number: 20170325314
    Abstract: An organic electroluminescence device according to the present invention includes: a base material having a top surface on which a recess is provided; a reflective layer provided along at least a surface of the recess; a filling layer filled in the recess via the reflective layer, the filling layer having light transmissivity; a first electrode provided at least on an upper layer side of the filling layer, the first electrode having light transmissivity; an organic layer provided on an upper layer side of the first electrode, the organic layer including at least a light emitting layer; and a second electrode provided on an upper layer side of the organic layer, the second electrode having light transmissivity. The second electrode has a reflectance of 70% or less.
    Type: Application
    Filed: November 6, 2015
    Publication date: November 9, 2017
    Inventors: HIDEKI UCHIDA, KATSUHIRO KIKUCHI, SATOSHI INOUE, EIJI KOIKE, MASANORI OHARA, YUTO TSUKAMOTO, YOSHIYUKI ISOMURA, KAZUKI MATSUNAGA
  • Patent number: 9812316
    Abstract: A mixed material for vapor deposition of lithium contains lithium oxide M1 in an amount of 90% or more, sodium chloride (at least one material selected from oxides, sulfides, chlorides, and fluorides of alkali metals) M2 having a melting point lower than the melting point of lithium oxide M1, and magnesium oxide (at least one material selected from oxides and sulfides of alkaline-earth metals) M3 having a melting point higher than the melting point of lithium oxide M1.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: November 7, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Manabu Niboshi, Yuto Tsukamoto, Yoshiyuki Isomura, Satoshi Inoue, Hideki Uchida, Shinichi Kawato, Katsuhiro Kikuchi