Patents by Inventor Kohei Yokoyama

Kohei Yokoyama 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: 20150318200
    Abstract: A wedge-shaped jig (6) is inserted into a gap between a first substrate (21) and a second substrate (22) at a corner (221) of the second substrate (22) and separation of the attached first substrate (21) and second substrate (22) starts to proceed; then, a second suction pad (53) of a second suction portion (51), which is the closest to the corner (221), moves upward. Then, first suction pads (43) of first suction portions (41a), (41b), and (41c) sequentially move upward such that one side of the second substrate (22) separates from the stacked body. Although the second substrate (22) warps as the separation of the second substrate (22) proceeds, each of the plurality of first suction pads (43) elastically deforms. Therefore, the first suction pads (43) can be prevented from being detached from the second substrate (22), and the substrate (22) can be securely separated from the stacked body.
    Type: Application
    Filed: April 29, 2015
    Publication date: November 5, 2015
    Inventors: Masakatsu OHNO, Satoru IDOJIRI, Kanpei KIKUCHI, Yoshiharu HIRAKATA, Kohei YOKOYAMA
  • Patent number: 9159923
    Abstract: An evaporation donor substrate that makes it possible to evaporate only a desired evaporation material in the case of performing deposition by an evaporation method. Thus, the use efficiency of an evaporation material can be increased resulting in reduction in production cost, and further a film with high uniformity can be deposited. The evaporation donor substrate can be obtained by forming a reflective layer having an opening over a substrate, forming a thermal insulation layer having a light-transmitting property separately over the substrate and the reflective layer, forming a light absorption layer over the thermal insulation layer, and forming a material layer over the light absorption layer.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: October 13, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kohei Yokoyama, Yosuke Sato, Tomoya Aoyama, Rena Takahashi
  • Publication number: 20150236280
    Abstract: A flexible device is provided. The hardness of a bonding layer of the flexible device is set to be higher than Shore D of 70, or preferably higher than or equal to Shore D of 80. The coefficient of expansion of a flexible substrate of the flexible device is set to be less than 58 ppm/° C., or preferably less than or equal to 30 ppm/° C.
    Type: Application
    Filed: February 13, 2015
    Publication date: August 20, 2015
    Inventors: Tatsuya SAKUISHI, Yutaka UCHIDA, Hiroki ADACHI, Saki EGUCHI, Junpei YANAKA, Kayo KUMAKURA, Seiji YASUMOTO, Kohei YOKOYAMA, Akihiro CHIDA
  • Patent number: 9105879
    Abstract: Provided is a highly reliable light-emitting element in which damage to an EL layer is reduced even when an auxiliary electrode for an upper electrode is provided. Further, a highly reliable light-emitting device in which luminance unevenness is suppressed is provided. The light-emitting element includes a first electrode; an insulating layer over the first electrode; an auxiliary electrode having a projection and a depression on a surface, over the insulating layer; a layer containing a light-emitting organic compound over the first electrode and the auxiliary electrode; and a second electrode over the layer containing the light-emitting organic compound. At least part of the auxiliary electrode is electrically connected to the second electrode.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: August 11, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kohei Yokoyama, Hisao Ikeda
  • Patent number: 9093404
    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: Grant
    Filed: December 18, 2013
    Date of Patent: July 28, 2015
    Assignees: Semiconductor Energy Laboratory Co., Ltd., Sharp Kabushiki Kaisha
    Inventors: Kohei Yokoyama, Tomohiro Kosaka, Fumikazu Shimoshikiryoh, Shinichi Kawato, Katsuhiro Kikuchi, Manabu Niboshi, Takashi Ochi, Yuto Tsukamoto, Tomofumi Osaki
  • Publication number: 20150068683
    Abstract: A yield in the step of bonding two members together is improved. A bonding apparatus includes a stage capable of supporting a first member having a sheet-like shape, a fixing mechanism capable of fixing one end portion of a second member having a sheet-like shape so that the second member overlaps with the first member, and a pressurizing mechanism capable of moving from a side of the one end portion of the second member to a side of the other end portion and spreading a bonding layer under pressure between the first member and the second member. The first member and the second member are bonded to each other.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 12, 2015
    Inventors: Masakatsu OHNO, Yoshiharu HIRAKATA, Shingo EGUCHI, Yasuhiro JINBO, Hisao IKEDA, Kohei YOKOYAMA, Hiroki ADACHI, Satoru IDOJIRI
  • Publication number: 20150060933
    Abstract: An apparatus for supplying a support having a clean surface is provided. Alternatively, an apparatus for manufacturing a stack including a support and a remaining portion of a processed member whose one surface layer is separated is provided. A positioning portion, a slit formation portion, and a peeling portion are included. The positioning portion is provided with a first transfer mechanism of a stacked film including a support and a separator and a table for fixing the stacked film. The slit formation portion is provided with a cutter that can form a slit which does not pass through the separator. The peeling portion is provided with a second transfer mechanism and a peeling mechanism extending the separator and then peeling the separator. In addition, a pretreatment portion activating a support surface is included.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 5, 2015
    Inventors: Masakatsu OHNO, Kohei YOKOYAMA, Satoru IDOJIRI, Hisao IKEDA, Yasuhiro JINBO, Hiroki ADACHI, Yoshiharu HIRAKATA, Shingo EGUCHI
  • Publication number: 20150059986
    Abstract: A device for forming a separation starting point that allows separation of a surface layer of a processed member to form a remaining portion is provided. A manufacturing device of a stack including a support and a remaining portion of a processed member whose surface layer is separated is provided. The device for forming the separation starting point includes a stage that supports the processed member, a cutter that faces the stage, a head portion that supports the cutter, an arm portion that supports the head portion, and a moving mechanism that relatively moves the cutter to the stage.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 5, 2015
    Inventors: Ryu KOMATSU, Kohei YOKOYAMA, Masakatsu OHNO, Satoru IDOJIRI, Hisao IKEDA, Yasuhiro JINBO, Hiroki ADACHI, Yoshiharu HIRAKATA, Shingo EGUCHI, Daiki NAKAMURA
  • Publication number: 20150059987
    Abstract: A processing apparatus of a stack is provided. The stack includes two substrates attached to each other with a gap provided between their end portions. The processing apparatus includes a fixing mechanism that fixes part of the stack, a plurality of adsorption jigs that fix an outer peripheral edge of one of the substrates of the stack, and a wedge-shaped jig that is inserted into a corner of the stack. The plurality of adsorption jigs include a mechanism that allows the adsorption jigs to move separately in a vertical direction and a horizontal direction. The processing apparatus further includes a sensor sensing a position of the gap between the end portion in the stack. A tip of the wedge-shaped jig moves along a chamfer formed on an end surface of the stack. The wedge-shaped jig is inserted into the gap between the end portions in the stack.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 5, 2015
    Inventors: Kayo KUMAKURA, Tomoya AOYAMA, Akihiro CHIDA, Kohei YOKOYAMA, Masakatsu OHNO, Satoru IDOJIRI, Hisao IKEDA, Hiroki ADACHI, Yoshiharu HIRAKATA, Shingo EGUCHI, Yasuhiro JINBO
  • Publication number: 20140332150
    Abstract: A method and an apparatus for manufacturing an object which involve a separation technique are provided. A first substrate provided with an object is attached to a second substrate and is then suction-fixed by using a suction chuck (also referred to as a suction stage or a vacuum chuck) including portions with different suction capabilities or by using its functional equivalent, and the second substrate is separated from the first substrate. Accordingly, the object is separated from the first substrate and transferred to the second substrate. An apparatus for achieving this is also provided. A substrate fixture surface of the suction chuck or its functional equivalent includes a plurality of portions provided with suction micro-holes and a portion provided with no holes. Owing to the plurality of portions provided with suction micro-holes, a plurality of objects can be transferred from the first substrate to the second substrate.
    Type: Application
    Filed: May 6, 2014
    Publication date: November 13, 2014
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yoshiharu Hirakata, Akihiro Chida, Kohei Yokoyama
  • Publication number: 20140284587
    Abstract: The manufacturing method of the light-emitting device is provided in which an auxiliary electrode in contact with an electrode formed using a transparent conductive film of a light-emitting element is formed using a mask, and direct contact between the auxiliary electrode and an EL layer is prevented by oxidizing the auxiliary electrode. Further, the light-emitting device manufactured according to the method and the lighting device including the light-emitting device are provided.
    Type: Application
    Filed: June 5, 2014
    Publication date: September 25, 2014
    Inventors: Hisao Ikeda, Kohei Yokoyama, Satoshi Seo
  • Publication number: 20140252386
    Abstract: Provided is a device in which heat conduction from a sealant to a functional element is suppressed and whose bezel is slim. The sealing structure includes a first substrate, a second substrate whose surface over which a sealed component is provided faces the first substrate, and a frame-like sealant which seals a space between the first substrate and the second substrate with the first substrate and the second substrate. The second substrate includes a groove portion between the sealant and the sealed component. The groove portion is in a vacuum or includes a substance whose heat conductivity is lower than that of the second substrate.
    Type: Application
    Filed: March 5, 2014
    Publication date: September 11, 2014
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Minato ITO, Kohei YOKOYAMA, Yusuke NISHIDO
  • 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
  • Patent number: 8821963
    Abstract: A first substrate which includes a reflective layer having an opening, a light-absorbing layer, and a material layer formed in contact with the light-absorbing layer over one of surfaces is provided; the surface of the first substrate over which the material layer is formed and a deposition target surface of the second substrate are disposed to face each other; and irradiation with laser light whose repetition rate is greater than or equal to 10 MHz and pulse width is greater than or equal to 100 fs and less than or equal to 10 ns is performed from the other surface side of the first substrate to selectively heat a part of the material layer at a position overlapping with the opening of the reflective layer and deposit the part of the material layer over the deposition target surface of the second substrate.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: September 2, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koichiro Tanaka, Takahiro Ibe, Kohei Yokoyama, Hisao Ikeda, Norifumi Takesue
  • 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: 20140170793
    Abstract: Provided is a highly reliable light-emitting element in which damage to an EL layer is reduced even when an auxiliary electrode for an upper electrode is provided. Further, a highly reliable light-emitting device in which luminance unevenness is suppressed is provided. The light-emitting element includes a first electrode; an insulating layer over the first electrode; an auxiliary electrode having a projection and a depression on a surface, over the insulating layer; a layer containing a light-emitting organic compound over the first electrode and the auxiliary electrode; and a second electrode over the layer containing the light-emitting organic compound. At least part of the auxiliary electrode is electrically connected to the second electrode.
    Type: Application
    Filed: February 20, 2014
    Publication date: June 19, 2014
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kohei Yokoyama, Hisao Ikeda
  • Patent number: 8748930
    Abstract: The manufacturing method of the light-emitting device is provided in which an auxiliary electrode in contact with an electrode formed using a transparent conductive film of a light-emitting element is formed using a mask, and direct contact between the auxiliary electrode and an EL layer is prevented by oxidizing the auxiliary electrode. Further, the light-emitting device manufactured according to the method and the lighting device including the light-emitting device are provided.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: June 10, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hisao Ikeda, Kohei Yokoyama, Satoshi Seo
  • Patent number: 8698190
    Abstract: A lighting device is formed using a light-emitting element by a more simplified method. The lighting device includes a light-emitting element including a light-emitting layer between a first electrode and a second electrode, a substrate provided with the light-emitting element and an uneven region around the periphery of the light-emitting element, a sealing substrate facing the substrate, connection electrodes connected to the first electrode and the second electrode and formed over the uneven region, and a sealant for bonding the substrate and the sealing substrate. The connection electrodes are each formed using a conductive paste, and the sealant is in contact with the connection electrodes and the uneven region provided around the periphery of the light-emitting element.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: April 15, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kohei Yokoyama, Hisao Ikeda, Shinichi Hirasa
  • Publication number: 20140057376
    Abstract: One surface of a first substrate provided with at least light-absorbing layers separately formed, partition layers each formed between the light-absorbing layers and having an inverse taper shape, and material layers formed on the light-absorbing layers and on the partition layers so that the material layers are separated from each other is disposed to face a deposition target surface of a second substrate; light irradiation is performed from the other surface of the first substrate, only the material layers in regions overlapped with the light-absorbing layers are heated and evaporated to the deposition target surface of the second substrate.
    Type: Application
    Filed: November 1, 2013
    Publication date: February 27, 2014
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi Seo, Kohei Yokoyama
  • Patent number: 8659011
    Abstract: Provided is a highly reliable light-emitting element in which damage to an EL layer is reduced even when an auxiliary electrode for an upper electrode is provided. Further, a highly reliable light-emitting device in which luminance unevenness is suppressed is provided. The light-emitting element includes a first electrode; an insulating layer over the first electrode; an auxiliary electrode having a projection and a depression on a surface, over the insulating layer; a layer containing a light-emitting organic compound over the first electrode and the auxiliary electrode; and a second electrode over the layer containing the light-emitting organic compound. At least part of the auxiliary electrode is electrically connected to the second electrode.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: February 25, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kohei Yokoyama, Hisao Ikeda