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: 20140284576
    Abstract: A display device that includes a reflective electrode; a transparent electrode; a partition; an EL layer formed over the partition and the transparent electrode; a semi-transmissive electrode formed over the EL layer; and a coloring layer over the semi-transmissive electrode. A light-emitting region is formed to overlap with the transparent electrode, the EL layer, the semi-transmissive electrode, and the coloring layer. A non-light-emitting region is formed to overlap with the transparent electrode, the partition, the EL layer, and the coloring layer. The non-light-emitting region is formed to surround the light-emitting region. The sum of the optical length of the transparent electrode and the optical length of the EL layer is adjusted to fulfil a condition of a microcavity intensifying light of the color of the coloring layer. The optical length of the partition in the non-light-emitting region is adjusted to weaken external light incident through the coloring layer.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 25, 2014
    Inventors: Nozomu SUGISAWA, Hisao IKEDA, Katsuhiro KIKUCHI, Manabu NIBOSHI, Satoshi INOUE, Yuto TSUKAMOTO, Shinichi KAWATO
  • Publication number: 20140284575
    Abstract: To inhibit surface reflection of a display device. A display device which includes a reflective electrode layer 110; a partition 118 formed to surround the reflective electrode layer; a layer 120 containing a light-emitting organic compound and formed over the partition and the reflective electrode layer; a semi-transmissive electrode layer 122 formed over the layer containing the light-emitting organic compound; and a coloring layer 162 formed over the semi-transmissive electrode layer. The coloring layer overlaps with the reflective electrode layer and the partition. The partition does not overlap with the reflective electrode layer.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 25, 2014
    Inventors: Nozomu SUGISAWA, Hisao IKEDA, Katsuhiro KIKUCHI, Manabu NIBOSHI, Satoshi INOUE, Yuto TSUKAMOTO, Shinichi KAWATO
  • Publication number: 20140252383
    Abstract: Occurrence of a crosstalk phenomenon in a light-emitting device is inhibited. The light-emitting device includes an insulating layer; a first lower electrode over the insulating layer; a second lower electrode over the insulating layer; a structure over the insulating layer and between the first lower electrode and the second lower electrode; a first partition wall between the first lower electrode and the structure, over the insulating layer; a second partition wall between the second lower electrode and the structure, over the insulating layer; a first light-emitting unit over the first lower electrode, the first partition wall, the structure, the second partition wall, and the second lower electrode; an intermediate layer over the first light-emitting unit; a second light-emitting unit over the intermediate layer; and an upper electrode over the second light-emitting unit.
    Type: Application
    Filed: February 27, 2014
    Publication date: September 11, 2014
    Inventors: Naoyuki SENDA, Yoshitaka DOZEN, Kohei YOKOYAMA, Manabu NIBOSHI, Yuto TSUKAMOTO, Satoshi INOUE, Shinichi KAWATO, Katsuhiro KIKUCHI
  • Publication number: 20140225102
    Abstract: The emission efficiency of a light-emitting device including a microcavity structure is improved. The light-emitting device includes a plurality of light-emitting elements. The plurality of light-emitting elements each include a reflective electrode, a transparent electrode, a plurality of light-emitting layers, and a semi-transmissive and semi-reflective electrode stacked in that order. The plurality of light-emitting layers emit light of different colors. A surface roughness of the transparent electrode in the light-emitting element which is among the plurality of light-emitting elements and in which light emitted from the light-emitting layer closest to the reflective electrode is amplified and emitted outside is greater than surface roughnesses of the transparent electrodes in the other light-emitting elements.
    Type: Application
    Filed: January 31, 2014
    Publication date: August 14, 2014
    Inventors: Hisao IKEDA, Takuya KAWATA, Manabu NIBOSHI, Katsuhiro KIKUCHI, Shinichi KAWATO, Takashi OCHI, Yuto TSUKAMOTO, Tomohiro KOSAKA, Tomofumi OSAKI
  • Publication number: 20140175469
    Abstract: Occurrence of a crosstalk phenomenon is prevented in a light-emitting device including a tandem element. The light-emitting device includes an insulating layer, a first lower electrode over the insulating layer, a second lower electrode over the insulating layer, a partition positioned over the insulating layer and between the first lower electrode and the second lower electrode, a first light-emitting unit over the first lower electrode, the partition, and the second lower electrode, intermediate layers over the first light-emitting unit, a second light-emitting unit over the intermediate layer, and an upper electrode over the second light-emitting unit. The partition has a first depression.
    Type: Application
    Filed: December 17, 2013
    Publication date: June 26, 2014
    Applicants: Sharp Kabushiki Kaisha, Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yoshitaka Dozen, Hisao Ikeda, Yoshiharu Hirakata, Manabu Niboshi, Katsuhiro Kikuchi, Shinichi Kawato, Takashi Ochi, Yuto Tsukamoto, Tomohiro Kosaka, Tomofumi Osaki
  • Publication number: 20140175470
    Abstract: The light-emitting device includes a first lower electrode, a second lower electrode, a partition, a layer with high conductivity, light-emitting layers, and an upper electrode. The conductivity of the layer with high conductivity is higher than the conductivity of each of the light-emitting layers and lower than the conductivity of each of the lower electrodes and the upper electrode. The partition includes a first slope located on a first lower electrode side and a second slope located on a second lower electrode side. The thickness of the layer with high conductivity located over the first slope in a direction perpendicular to the first slope is different from the thickness of the layer with high conductivity located over the second slope in a direction perpendicular to the second slope.
    Type: Application
    Filed: December 18, 2013
    Publication date: June 26, 2014
    Applicants: Sharp Kabushiki Kaisha, Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kohei Yokoyama, Tomohiro Kosaka, Fumikazu Shimoshikiryoh, Shinichi Kawato, Katsuhiro Kikuchi, Manabu Niboshi, Takashi Ochi, Yuto Tsukamoto, Tomofumi Osaki
  • Publication number: 20140103368
    Abstract: Occurrence of a crosstalk phenomenon is suppressed in a light-emitting device including a tandem element. A light-emitting device includes a first lower electrode and a second lower electrode over an insulating layer; a partition which is formed over the insulating layer and positioned between the first lower electrode and the second lower electrode; a projecting object formed over the partition; a first light-emitting unit over each of the first lower electrode, the partition, the projecting object, and the second lower electrode; an intermediate layer over the first light-emitting unit; a second light-emitting unit over the intermediate layer; and an upper electrode over the second light-emitting unit. A recess is formed by a side surface of the projecting object and a side surface of the partition.
    Type: Application
    Filed: October 15, 2013
    Publication date: April 17, 2014
    Inventors: Kaoru HATANO, Naoyuki SENDA, Manabu NIBOSHI, Katsuhiro KIKUCHI, Shinichi KAWATO, Takashi OCHI, Yuto TSUKAMOTO, Tomohiro KOSAKA, Tomofumi OSAKI
  • Patent number: 8654286
    Abstract: The present invention provides a liquid crystal display device which allows an improvement in contrast ratio by compensating retardation given in a liquid crystal layer, even if a retardation layer has an inclined portion, and a desired retardation is varied at the inclined portion. The present invention is a vertical alignment liquid crystal display device, including: a pair of substrates facing each other; a liquid crystal layer disposed between the pair of substrates; a transmissive display region; and a reflective display region, wherein one of the pair of substrates includes a ?/4 retardation layer in the reflective display region, the ?/4 retardation layer protruding towards the liquid crystal layer, the ?/4 retardation layer includes an inclined portion inclined to a flat face of the substrate, and an azimuth of the inclined portion is substantially parallel to a slow axis azimuth of the ?/4 retardation layer.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: February 18, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshito Hashimoto, Hiroyuki Ohgami, Masayuki Soga, Katsuhiro Kikuchi, Masakazu Shibasaki, Yuichi Iyama, Masumi Kubo
  • Patent number: 8563214
    Abstract: The present invention relates to a radiation sensitive resin composition comprising [A] an alkali-soluble resin, [B] a 1,2-quinonediazide compound and [C] a radical trapping agent. The radiation sensitive resin composition can provide an interlayer insulating film which satisfies general requirements for an interlayer insulating film such as high light transmittance and has excellent heat-resistant dimensional stability, heat discoloration resistance and adhesion to a substrate along with the improvement of process efficiency for improving product yield at a high resolution and has excellent storage stability.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: October 22, 2013
    Assignees: Sharp Corporation, JSR Corporation
    Inventors: Katsuhiro Kikuchi, Kentaro Usui, Masakazu Shibasaki, Takashi Ochi, Tatsuro Kato, Kenichi Hamada, Masashi Arai, Megumi Murata, Hideaki Takase
  • Publication number: 20130242610
    Abstract: A light guiding element has a first principal surface, a second principal surface which opposes the first principal surface, a first lateral surface which intersects with the first principal surface and the second principal surface, and a second lateral surface which opposes the first lateral surface. The light guiding element allows light incoming from the first lateral surface to propagate between the first principal surface and the second principal surface. The light guiding element includes a portion in which a refractive index varies substantially continuously from the first principal surface toward the second principal surface.
    Type: Application
    Filed: November 25, 2011
    Publication date: September 19, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Takashi OCHI, Masakazu SHIBASAKI, Iori AOYAMA, Yuichi IYAMA, Katsuhiro KIKUCHI
  • Publication number: 20130194524
    Abstract: A liquid crystal panel includes a liquid crystal layer that can switch to a light transmitting state and a light scattering state, and lines provided on a portion of the liquid crystal layer on the side opposite to the observation side. The lines are provided with a reflecting portion by which at least a portion of light that entered from the observation side is reflected toward the observation side.
    Type: Application
    Filed: October 4, 2011
    Publication date: August 1, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Yuichi Kita, Katsuhiro Kikuchi, Takashi Ochi, Masakazu Shibasaki, Iori Aoyama, Sayuri Fujiwara, Eiji Satoh, Yasushi Asaoka, Kazuhiro Deguchi
  • Publication number: 20120270151
    Abstract: The present invention relates to a radiation sensitive resin composition comprising [A] an alkali-soluble resin, [B] a 1,2-quinonediazide compound and [C] a radical trapping agent. The radiation sensitive resin composition can provide an interlayer insulating film which satisfies general requirements for an interlayer insulating film such as high light transmittance and has excellent heat-resistant dimensional stability, heat discoloration resistance and adhesion to a substrate along with the improvement of process efficiency for improving product yield at a high resolution and has excellent storage stability.
    Type: Application
    Filed: October 14, 2010
    Publication date: October 25, 2012
    Applicants: JSR CORPORATION, SHARP CORPORATION
    Inventors: Katsuhiro Kikuchi, Kentaro Usui, Masakazu Shibasaki, Takashi Ochi, Tatsuro Kato, Kenichi Hamada, Masashi Arai, Megumi Murata, Hideaki Takase
  • Publication number: 20120262652
    Abstract: The present invention provides a counter electrode (13) and an alignment controlling electrode opening (14) directly on a color filter colored layer (12) to produce a liquid crystal display device (1) of a vertical alignment (VA) display mode. The present invention includes no overcoat layer for the color filter colored layer (12), and adjusts the thickness, pigment concentrations and the like for the color filter colored layer (12) to achieve a wide color reproduction range and high alignment stability.
    Type: Application
    Filed: December 24, 2010
    Publication date: October 18, 2012
    Inventors: Katsuhiro Kikuchi, Takashi Ochi
  • Patent number: 8031304
    Abstract: A transfiective liquid crystal display panel, in which at least one of a pixel electrode substrate and a counter electrode substrate is provided with a protruding portion so that the thickness of a liquid crystal layer in a reflective region is smaller than that in a transmissive region, wherein a light-blocking section for shading a defective orientation domain formed by an insufficiently-rubbed portion around the protruding portion is formed simultaneously with, and using the same material as, another element such as a storage capacitor electrode section, a signal line or a scanning line. Thus, the decrease in the display quality due to the defective orientation domain can be suppressed without adding to the production process.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: October 4, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshiyuki Tanaka, Ikuji Konishi, Katsuhiro Kikuchi
  • Patent number: 7916250
    Abstract: A liquid crystal display device includes a liquid crystal module and a touch panel section arranged in front of the liquid crystal module. There is a space between the liquid crystal module and the touch panel section, and a layer of air is present in the space. The liquid crystal module has a ?/4 plate on the front side. The touch panel section includes a polarization plate and ?/4 plate which are arranged on the front side of a touch panel in this order.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: March 29, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Katsuhiro Kikuchi, Masumi Kubo, Takayuki Natsume
  • Publication number: 20110007252
    Abstract: The present invention provides a liquid crystal display device which allows an improvement in contrast ratio by compensating retardation given in a liquid crystal layer, even if a retardation layer has an inclined portion, and a desired retardation is varied at the inclined portion. The present invention is a vertical alignment liquid crystal display device, including: a pair of substrates facing each other; a liquid crystal layer disposed between the pair of substrates; a transmissive display region; and a reflective display region, wherein one of the pair of substrates includes a ?/4 retardation layer in the reflective display region, the ?/4 retardation layer protruding towards the liquid crystal layer, the ?/4 retardation layer includes an inclined portion inclined to a flat face of the substrate, and an azimuth of the inclined portion is substantially parallel to a slow axis azimuth of the ?/4 retardation layer.
    Type: Application
    Filed: September 10, 2008
    Publication date: January 13, 2011
    Inventors: Yoshito Hashimoto, Hiroyuki Ohgami, Masayuki Soga, Katsuhiro Kikuchi, Masakazu Shibasaki, Yuichi Iyama, Masumi Kubo
  • Publication number: 20090286067
    Abstract: A friction material contains substantially no material whose Mohs hardness is higher than 6. In addition, the friction material contains a layered clay mineral, in which titania particles are inserted into layers, at a rate of 0.5%-by-mass to 20%-by-mass.
    Type: Application
    Filed: May 11, 2009
    Publication date: November 19, 2009
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Katsuhiro KIKUCHI, Motoki KUROE, Hiroshi IDEI
  • Publication number: 20090270284
    Abstract: A friction modifier is provided with a titania particle-layered clay mineral complex in which titania particles are contained in a layered clay mineral. An average particle diameter of the titania particles is 3 to 100 nm. A ratio of the titania particles to the titania particle-layered clay mineral complex is 0.1 to 0.8 on the mass basis.
    Type: Application
    Filed: April 27, 2009
    Publication date: October 29, 2009
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD
    Inventors: Katsuhiro KIKUCHI, Motoki KUROE, Hiroshi IDEI
  • Publication number: 20090180068
    Abstract: A liquid crystal display device includes a liquid crystal module and a touch panel section arranged in front of the liquid crystal module. There is a space between the liquid crystal module and the touch panel section, and a layer of air is present in the space. The liquid crystal module has a ?/4 plate on the front side. The touch panel section includes a polarization plate and ?/4 plate which are arranged on the front side of a touch panel in this order.
    Type: Application
    Filed: November 9, 2006
    Publication date: July 16, 2009
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Katsuhiro Kikuchi, Masumi Kubo, Takayuki Natsume
  • Patent number: 7416061
    Abstract: In a brake member having a brake lining bonded to a brake shoe, the brake shoe has a chemical conversion coating provided on the surface thereof and a ceramics coating layer provided on the chemical conversion coating which has been formed by dipping in a ceramics precursor solution. The brake lining is bonded to the ceramics coating layer by heating under pressure. A method for bonding a brake lining and a brake shoe is provided with a step of degreasing, cleaning and acid-washing the surface of a brake shoe and then forming a chemical conversion coating thereon, a step of dipping the brake shoe having a chemical conversion coating formed thereon in a ceramics precursor solution to effect ceramics coating and a step of bonding a dried brake lining to the brake shoe under heating and pressure.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: August 26, 2008
    Assignee: Akebono Brake Industry Co., Ltd.
    Inventors: Hiroshi Idei, Sho Kurihara, Yoshiyuki Sugai, Katsuhiro Kikuchi, Yoshihiro Aoyagi