Patents by Inventor Yuji Iwaki

Yuji Iwaki 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: 20120298978
    Abstract: A light emitting device comprises a pair of electrodes and a mixed layer provided between the pair of electrodes. The mixed layer contains an organic compound which contains no nitrogen atoms, i.e., an organic compound which dose not have an arylamine skeleton, and a metal oxide. As the organic compound, an aromatic hydrocarbon having an anthracene skeleton is preferably used. As such an aromatic hydrocarbon, t-BuDNA, DPAnth, DPPA, DNA, DMNA, t-BuDBA, and the like are listed. As the metal oxide, molybdenum oxide, vanadium oxide, ruthenium oxide, rhenium oxide, and the like are preferably used. Further, the mixed layer preferably shows absorbance per 1 ?m of 1 or less or does not show a distinct absorption peak in a spectrum of 450 to 650 nm when an absorption spectrum is measured.
    Type: Application
    Filed: August 7, 2012
    Publication date: November 29, 2012
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Yuji IWAKI, Satoshi SEO, Takahiro KAWAKAMI, Hisao IKEDA, Junichiro SAKATA, Tomoya AOYAMA
  • Publication number: 20120286256
    Abstract: An object of the present invention is to provide a light-emitting element with high luminous efficiency, and a light-emitting element of low-voltage driving. Another object is to provide a light-emitting device with low power consumption by using the light-emitting element. Another object is to provide an electronic appliance with low power consumption by using the light-emitting device in a display portion. A light-emitting element includes, between a pair of electrodes, a layer containing a composite material of a first organic compound and an inorganic compound and a layer containing a second organic compound being in contact with the layer containing the composite material, wherein the second organic compound does not have a peak of an absorption spectrum in a wavelength region of 450 to 800 nm if the second organic compound is compounded with the inorganic compound.
    Type: Application
    Filed: July 19, 2012
    Publication date: November 15, 2012
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Yuji IWAKI, Junichiro SAKATA, Hisao IKEDA, Tomoya AOYAMA, Takaaki NAGATA, Takahiro KAWAKAMI, Satoshi SEO, Ryoji NOMURA
  • Publication number: 20120248430
    Abstract: One feature of the present invention is to provide a buffer layer made of a composite material for a light emitting element including aromatic hydrocarbon containing at least one vinyl skeleton and metal oxide in part of a light emitting substance containing layer, in the light emitting element formed by interposing the light emitting substance containing layer between a pair of electrodes. The composite material for a light emitting element for forming the buffer layer of the present invention has high conductivity and is superior in transparency.
    Type: Application
    Filed: June 14, 2012
    Publication date: October 4, 2012
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takahiro KAWAKAMI, Tomoya AOYAMA, Junichiro SAKATA, Hisao IKEDA, Satoshi SEO, Yuji IWAKI
  • Patent number: 8252434
    Abstract: A light emitting device comprises a pair of electrodes and a mixed layer provided between the pair of electrodes. The mixed layer contains an organic compound which contains no nitrogen atoms, i.e., an organic compound which dose not have an arylamine skeleton, and a metal oxide. As the organic compound, an aromatic hydrocarbon having an anthracene skeleton is preferably used. As such an aromatic hydrocarbon, t-BuDNA, DPAnth, DPPA, DNA, DMNA, t-BuDBA, and the like are listed. As the metal oxide, molybdenum oxide, vanadium oxide, ruthenium oxide, rhenium oxide, and the like are preferably used. Further, the mixed layer preferably shows absorbance per 1 ?m of 1 or less or does not show a distinct absorption peak in a spectrum of 450 to 650 nm when an absorption spectrum is measured.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: August 28, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yuji Iwaki, Satoshi Seo, Takahiro Kawakami, Hisao Ikeda, Junichiro Sakata, Tomoya Aoyama
  • Patent number: 8227982
    Abstract: An object of the present invention is to provide a light-emitting element with high luminous efficiency, and a light-emitting element of low-voltage driving. Another object is to provide a light-emitting device with low power consumption by using the light-emitting element. Another object is to provide an electronic appliance with low power consumption by using the light-emitting device in a display portion. A light-emitting element includes, between a pair of electrodes, a layer containing a composite material of a first organic compound and an inorganic compound and a layer containing a second organic compound being in contact with the layer containing the composite material, wherein the second organic compound does not have a peak of an absorption spectrum in a wavelength region of 450 to 800 nm if the second organic compound is compounded with the inorganic compound.
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: July 24, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yuji Iwaki, Junichiro Sakata, Hisao Ikeda, Tomoya Aoyama, Takaaki Nagata, Takahiro Kawakami, Satoshi Seo, Ryoji Nomura
  • Patent number: 8227802
    Abstract: It is an object of the present invention to provide a semiconductor device in which data can be written except when manufacturing the semiconductor device and that counterfeits can be prevented. Moreover, it is another object of the invention to provide an inexpensive semiconductor device including a memory having a simple structure. The semiconductor device includes a field effect transistor formed over a single crystal semiconductor substrate, a first conductive layer formed over the field effect transistor, an organic compound layer formed over the first conductive layer, and a second conductive layer formed over the organic compound layer, and a memory element includes the first conductive layer, the organic compound, and the second conductive layer. According to the above structure, a semiconductor device which can conduct non-contact transmission/reception of data can be provided by possessing an antenna.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: July 24, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroko Abe, Yuji Iwaki, Mikio Yukawa, Shunpei Yamazaki, Yasuyuki Arai, Yasuko Watanabe, Yoshitaka Moriya
  • Patent number: 8227097
    Abstract: One feature of the present invention is to provide a buffer layer made of a composite material for a light emitting element including aromatic hydrocarbon containing at least one vinyl skeleton and metal oxide in part of a light emitting substance containing layer, in the light emitting element formed by interposing the light emitting substance containing layer between a pair of electrodes. The composite material for a light emitting element for forming the buffer layer of the present invention has high conductivity and is superior in transparency.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: July 24, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takahiro Kawakami, Tomoya Aoyama, Junichiro Sakata, Hisao Ikeda, Satoshi Seo, Yuji Iwaki
  • Patent number: 8223531
    Abstract: The present invention provides a semiconductor device including a memory that has a memory cell array including a plurality of memory cells, a control circuit that controls the memory, and an antenna, where the memory cell array has a plurality of bit lines extending in a first direction and a plurality of word lines extending in a second direction different from the first direction, and each of the plurality of memory cells has an organic compound layer provided between the bit line and the word line. Data is written by applying optical or electric action to the organic compound layer.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: July 17, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Ryoji Nomura, Hiroko Abe, Yuji Iwaki, Shunpei Yamazaki
  • Publication number: 20120149140
    Abstract: To provide a light-emitting element and a light-emitting device which can be designed and manufactured with redundancy. A light-emitting element of the invention includes a pair of electrode, and a layer containing a light-emissive substance between the pair of electrodes. The layer containing a light-emissive substance includes a layer containing a composite material, and the layer containing a composite material includes an organic compound and an inorganic compound. The concentration ratio of the organic compound to the inorganic compound changes periodically. The layer containing a composite maternal can be changed in electrical characteristics without changing the composition ratio of the organic compound to the inorganic compound in the layer or changing the kind of compounds used for the layer.
    Type: Application
    Filed: February 23, 2012
    Publication date: June 14, 2012
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Hisao Ikeda, Junichiro Sakata, Satoshi Seo, Yuji Iwaki
  • Publication number: 20120061655
    Abstract: One feature of the present invention is to provide a buffer layer made of a composite material for a light emitting element including aromatic hydrocarbon containing at least one vinyl skeleton and metal oxide in part of a light emitting substance containing layer, in the light emitting element formed by interposing the light emitting substance containing layer between a pair of electrodes. The composite material for a light emitting element for forming the buffer layer of the present invention has high conductivity and is superior in transparency.
    Type: Application
    Filed: October 26, 2011
    Publication date: March 15, 2012
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Takahiro KAWAKAMI, Tomoya AOYAMA, Junichiro SAKATA, Hisao IKEDA, Satoshi SEO, Yuji IWAKI
  • Patent number: 8125144
    Abstract: To provide a light-emitting element and a light-emitting device which can be designed and manufactured with redundancy. A light-emitting element of the invention includes a pair of electrode, and a layer containing a light-emissive substance between the pair of electrodes. The layer containing a light-emissive substance includes a layer containing a composite material, and the layer containing a composite material includes an organic compound and an inorganic compound. The concentration ratio of the organic compound to the inorganic compound changes periodically. The layer containing a composite maternal can be changed in electrical characteristics without changing the composition ratio of the organic compound to the inorganic compound in the layer or changing the kind of compounds used for the layer.
    Type: Grant
    Filed: April 10, 2006
    Date of Patent: February 28, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hisao Ikeda, Junichiro Sakata, Satoshi Seo, Yuji Iwaki
  • Patent number: 8089799
    Abstract: The present invention provides a semiconductor device including a memory that has a memory cell array including a plurality of memory cells, a control circuit that controls the memory, and an antenna, where the memory cell array has a plurality of bit lines extending in a first direction and a plurality of word lines extending in a second direction different from the first direction, and each of the plurality of memory cells has an organic compound layer provided between the bit line and the word line. Data is written by applying optical or electric action to the organic compound layer.
    Type: Grant
    Filed: January 7, 2009
    Date of Patent: January 3, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Ryoji Nomura, Hiroko Abe, Yuji Iwaki, Shunpei Yamazaki
  • Publication number: 20110273084
    Abstract: A light emitting device comprises a pair of electrodes and a mixed layer provided between the pair of electrodes. The mixed layer contains an organic compound which contains no nitrogen atoms, i.e., an organic compound which dose not have an arylamine skeleton, and a metal oxide. As the organic compound, an aromatic hydrocarbon having an anthracene skeleton is preferably used. As such an aromatic hydrocarbon, t-BuDNA, DPAnth, DPPA, DNA, DMNA, t-BuDBA, and the like are listed. As the metal oxide, molybdenum oxide, vanadium oxide, ruthenium oxide, rhenium oxide, and the like are preferably used. Further, the mixed layer preferably shows absorbance per 1 ?m of 1 or less or does not show a distinct absorption peak in a spectrum of 450 to 650 nm when an absorption spectrum is measured.
    Type: Application
    Filed: July 19, 2011
    Publication date: November 10, 2011
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Yuji IWAKI, Satoshi SEO, Takahiro KAWAKAMI, Hisao IKEDA, Junichiro SAKATA, Tomoya AOYAMA
  • Patent number: 8048543
    Abstract: It is an object of the present invention to provide a functional layer for protecting a light emitting element from being deteriorated by a physical or chemical influence when the light emitting element is manufactured or driven, and to attain extension of lifetime of an element and improvement of element characteristics without increasing a drive voltage and degrading transmittance and color purity by providing such a functional layer. One feature of the present invention is to provide a buffer layer made of a composite material for a light emitting element including aromatic hydrocarbon containing at least one vinyl skeleton and metal oxide in part of a light emitting substance containing layer, in the light emitting element formed by interposing the light emitting substance containing layer between a pair of electrodes. The composite material for a light emitting element for forming the buffer layer of the present invention has high conductivity and is superior in transparency.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: November 1, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takahiro Kawakami, Tomoya Aoyama, Junichiro Sakata, Hisao Ikeda, Satoshi Seo, Yuji Iwaki
  • Patent number: 8043939
    Abstract: To provide a method for manufacturing an SOI substrate having a single crystal semiconductor layer having a small and uniform thickness over an insulating film. Further, time of adding hydrogen ions is reduced and time of manufacture per SOI substrate is reduced. A bond layer is formed over a surface of a first semiconductor wafer and a separation layer is formed below the bond layer by irradiating the first semiconductor wafer with H3+ ions by an ion doping apparatus. H3+ ions accelerated by high voltage are separated to be three H+ ions at a semiconductor wafer surface, and the H+ ions cannot enter deeply. Therefore, H+ ions are added into a shallower region in the semiconductor wafer at a higher concentration than the case of using a conventional ion implantation method.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: October 25, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Akiharu Miyanaga, Ko Inada, Yuji Iwaki
  • Publication number: 20110227137
    Abstract: The present invention provides a semiconductor device including a memory that has a memory cell array including a plurality of memory cells, a control circuit that controls the memory, and an antenna, where the memory cell array has a plurality of bit lines extending in a first direction and a plurality of word lines extending in a second direction different from the first direction, and each of the plurality of memory cells has an organic compound layer provided between the bit line and the word line. Data is written by applying optical or electric action to the organic compound layer.
    Type: Application
    Filed: June 2, 2011
    Publication date: September 22, 2011
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Ryoji NOMURA, Hiroko ABE, Yuji IWAKI, Shunpei YAMAZAKI
  • Patent number: 8017252
    Abstract: A light emitting device comprises a pair of electrodes and a mixed layer provided between the pair of electrodes. The mixed layer contains an organic compound which contains no nitrogen atoms, i.e., an organic compound which dose not have an arylamine skeleton, and a metal oxide. As the organic compound, an aromatic hydrocarbon having an anthracene skeleton is preferably used. As such an aromatic hydrocarbon, t-BuDNA, DPAnth, DPPA, DNA, DMNA, t-BuDBA, and the like are listed. As the metal oxide, molybdenum oxide, vanadium oxide, ruthenium oxide, rhenium oxide, and the like are preferably used. Further, the mixed layer preferably shows absorbance per 1 ?m of 1 or less or does not show a distinct absorption peak in a spectrum of 450 to 650 nm when an absorption spectrum is measured.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: September 13, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yuji Iwaki, Satoshi Seo, Takahiro Kawakami, Hisao Ikeda, Junichiro Sakata, Tomoya Aoyama
  • Patent number: 8003977
    Abstract: It is an object of the present invention to provide a light emitting element with improved luminous efficiency, a reduced drive voltage, and improved degree of deterioration with respect to driving time. According to a light emitting element including a first electrode; a second electrode; and a light emitting laminated body formed therebetween, the light emitting laminated body has at least a first layer, a second layer, and a third layer in this order, the first layer is a layer having a carrier transporting property, the third layer is a layer including an emission center material and a host material in which the emission center material is dispersed, the second layer has an energy gap larger than that of the first layer and equal to or larger than that of the host material, and the second layer has a thickness of 0.1 nm or more and less than 5 nm.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: August 23, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Nobuharu Ohsawa, Yuji Iwaki, Satoshi Seo
  • Patent number: 7989694
    Abstract: The invention provides a photoelectric conversion element and a solar battery having the photoelectric conversion element each of which has a structure with a high carrier generating rate. Further, the invention provides a photoelectric conversion element and a solar battery having the photoelectric conversion element of which high energy converting efficiency. According to the invention, the photoelectric conversion element and the solar battery having the photoelectric conversion element are characterized in that a pair of electrodes sandwich a mixed layer including a charge generating layer and a charge acceptor layer. The charge generating layer is formed of a first organic compound and an inorganic compound. The charge acceptor layer is formed of a second organic compound.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: August 2, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Yuji Iwaki
  • Patent number: RE43454
    Abstract: The present invention is related to a disc cartridge in which an optical disc, an inner shell and shutter members are housed in a main cartridge body unit, formed by abutting and combining upper and lower shells and in which the inner shell is run in rotation to cause the shutter members to open or close an aperture provided in the main cartridge body unit. The inner shell is formed by a resin molding portion comprised of a first molded portion for forming the inner shell and a second molded portion connected to the first molded portion. The second molded portion is provided at a position forming the aperture in the inner shell and is connected to the first molded portion through a flanged thin-walled section. The inner shell is formed by severing the second molded portion and the flanged thin-walled section.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: June 5, 2012
    Assignee: Sony Corporation
    Inventors: Yuji Iwaki, Shuichi Kikuchi, Teiko Hoshi, Naoki Inoue, Manabu Obata, Mitsuyoshi Kawaguchi