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).
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Publication number: 20140284576Abstract: 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: ApplicationFiled: March 17, 2014Publication date: September 25, 2014Inventors: Nozomu SUGISAWA, Hisao IKEDA, Katsuhiro KIKUCHI, Manabu NIBOSHI, Satoshi INOUE, Yuto TSUKAMOTO, Shinichi KAWATO
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Publication number: 20140284575Abstract: 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: ApplicationFiled: March 17, 2014Publication date: September 25, 2014Inventors: Nozomu SUGISAWA, Hisao IKEDA, Katsuhiro KIKUCHI, Manabu NIBOSHI, Satoshi INOUE, Yuto TSUKAMOTO, Shinichi KAWATO
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Publication number: 20140252383Abstract: 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: ApplicationFiled: February 27, 2014Publication date: September 11, 2014Inventors: Naoyuki SENDA, Yoshitaka DOZEN, Kohei YOKOYAMA, Manabu NIBOSHI, Yuto TSUKAMOTO, Satoshi INOUE, Shinichi KAWATO, Katsuhiro KIKUCHI
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Publication number: 20140225102Abstract: 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: ApplicationFiled: January 31, 2014Publication date: August 14, 2014Inventors: Hisao IKEDA, Takuya KAWATA, Manabu NIBOSHI, Katsuhiro KIKUCHI, Shinichi KAWATO, Takashi OCHI, Yuto TSUKAMOTO, Tomohiro KOSAKA, Tomofumi OSAKI
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Publication number: 20140175469Abstract: 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: ApplicationFiled: December 17, 2013Publication date: June 26, 2014Applicants: 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
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Publication number: 20140175470Abstract: 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: ApplicationFiled: December 18, 2013Publication date: June 26, 2014Applicants: 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
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Publication number: 20140103368Abstract: 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: ApplicationFiled: October 15, 2013Publication date: April 17, 2014Inventors: Kaoru HATANO, Naoyuki SENDA, Manabu NIBOSHI, Katsuhiro KIKUCHI, Shinichi KAWATO, Takashi OCHI, Yuto TSUKAMOTO, Tomohiro KOSAKA, Tomofumi OSAKI
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Patent number: 8654286Abstract: 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: GrantFiled: September 10, 2008Date of Patent: February 18, 2014Assignee: Sharp Kabushiki KaishaInventors: Yoshito Hashimoto, Hiroyuki Ohgami, Masayuki Soga, Katsuhiro Kikuchi, Masakazu Shibasaki, Yuichi Iyama, Masumi Kubo
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Patent number: 8563214Abstract: 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: GrantFiled: October 14, 2010Date of Patent: October 22, 2013Assignees: Sharp Corporation, JSR CorporationInventors: Katsuhiro Kikuchi, Kentaro Usui, Masakazu Shibasaki, Takashi Ochi, Tatsuro Kato, Kenichi Hamada, Masashi Arai, Megumi Murata, Hideaki Takase
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Publication number: 20130242610Abstract: 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: ApplicationFiled: November 25, 2011Publication date: September 19, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Takashi OCHI, Masakazu SHIBASAKI, Iori AOYAMA, Yuichi IYAMA, Katsuhiro KIKUCHI
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Publication number: 20130194524Abstract: 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: ApplicationFiled: October 4, 2011Publication date: August 1, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Yuichi Kita, Katsuhiro Kikuchi, Takashi Ochi, Masakazu Shibasaki, Iori Aoyama, Sayuri Fujiwara, Eiji Satoh, Yasushi Asaoka, Kazuhiro Deguchi
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Publication number: 20120270151Abstract: 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: ApplicationFiled: October 14, 2010Publication date: October 25, 2012Applicants: JSR CORPORATION, SHARP CORPORATIONInventors: Katsuhiro Kikuchi, Kentaro Usui, Masakazu Shibasaki, Takashi Ochi, Tatsuro Kato, Kenichi Hamada, Masashi Arai, Megumi Murata, Hideaki Takase
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Publication number: 20120262652Abstract: 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: ApplicationFiled: December 24, 2010Publication date: October 18, 2012Inventors: Katsuhiro Kikuchi, Takashi Ochi
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Patent number: 8031304Abstract: 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: GrantFiled: December 14, 2006Date of Patent: October 4, 2011Assignee: Sharp Kabushiki KaishaInventors: Toshiyuki Tanaka, Ikuji Konishi, Katsuhiro Kikuchi
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Patent number: 7916250Abstract: 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: GrantFiled: November 9, 2006Date of Patent: March 29, 2011Assignee: Sharp Kabushiki KaishaInventors: Katsuhiro Kikuchi, Masumi Kubo, Takayuki Natsume
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Publication number: 20110007252Abstract: 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: ApplicationFiled: September 10, 2008Publication date: January 13, 2011Inventors: Yoshito Hashimoto, Hiroyuki Ohgami, Masayuki Soga, Katsuhiro Kikuchi, Masakazu Shibasaki, Yuichi Iyama, Masumi Kubo
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Publication number: 20090286067Abstract: 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: ApplicationFiled: May 11, 2009Publication date: November 19, 2009Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.Inventors: Katsuhiro KIKUCHI, Motoki KUROE, Hiroshi IDEI
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Publication number: 20090270284Abstract: 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: ApplicationFiled: April 27, 2009Publication date: October 29, 2009Applicant: AKEBONO BRAKE INDUSTRY CO., LTDInventors: Katsuhiro KIKUCHI, Motoki KUROE, Hiroshi IDEI
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Publication number: 20090180068Abstract: 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: ApplicationFiled: November 9, 2006Publication date: July 16, 2009Applicant: SHARP KABUSHIKI KAISHAInventors: Katsuhiro Kikuchi, Masumi Kubo, Takayuki Natsume
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Patent number: 7416061Abstract: 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: GrantFiled: March 30, 2007Date of Patent: August 26, 2008Assignee: Akebono Brake Industry Co., Ltd.Inventors: Hiroshi Idei, Sho Kurihara, Yoshiyuki Sugai, Katsuhiro Kikuchi, Yoshihiro Aoyagi