Patents by Inventor Akihiko Takeda

Akihiko Takeda 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).

  • Patent number: 10251267
    Abstract: A transparent electrode (1) comprises a transparent substrate (2); a metal conductive layer (4) composed of a metal thin line pattern; and a polymer conductive layer (6) including a conductive polymer containing a polymer acid. The metal conductive layer (4) is formed on/over the transparent substrate (2) and the metal conductive layer (4) is covered with the polymer conductive layer (6). The polymer conductive layer (6) has a surface specific resistance of 10,000?/? or smaller and the polymer acid contains a fluorinated polymer acid and a non-fluorinated polymer acid. In the polymer conductive layer (6) a concentration of the fluorinated polymer acid increases along a direction from the transparent substrate (2) towards the polymer conductive layer (6).
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: April 2, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Akihiko Takeda, Takatoshi Suematsu
  • Patent number: 9871225
    Abstract: Provided is an organic electroluminescent element including a film substrate having thereon: at least one gas barrier layer, a light scatter layer, at least one smooth layer, and a light-emitting unit containing an organic functional layer interposed between a pair of electrodes, laminated in this order, wherein the light scatter layer contains a binder and light scatter particles having an average particle size of 0.2 ?m or more to less than 1 ?m; and the smooth layer contains an oxide or a nitride of silicone or niobium as a main component.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: January 16, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Takaaki Kuroki, Akihiko Takeda, Yasunobu Kobayashi
  • Patent number: 9640762
    Abstract: A method for producing a transparent electrode includes a forming step, an applying step and an irradiating step. The forming step is a step of forming a conductive metal layer on a transparent resin substrate. The applying step is a step of applying a composition containing a conductive polymer and a nonconductive polymer over the transparent resin substrate and the conductive metal layer so as to form a conductive polymer layer. The irradiating step is a step of irradiating the conductive polymer layer with an infrared ray having a ratio of spectral radiance at a wavelength of 5.8 ?m to spectral radiance at a wavelength of 3.0 ?m of 5% or less.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: May 2, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Masaki Goto, Akihiko Takeda, Toshiyuki Matsumura
  • Patent number: 9608226
    Abstract: A method for forming a transparent electrode includes a step of forming a thin metal wire on a transparent substrate; and a step of forming a transparent conductive layer on the transparent substrate and the thin metal wire. The step of forming the transparent conductive layer is a step of forming the transparent conductive layer by applying an application liquid onto the transparent substrate and the thin metal wire by printing. The application liquid is composed of a conductive polymer, a water-soluble binder having a structural unit represented by the following general formula (I), a polar solvent having a log P value of ?1.50 to ?0.45, and 5.0 to 25 mass % of a glycol ether.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: March 28, 2017
    Assignee: Konica Minolta, Inc.
    Inventors: Takatoshi Suematsu, Akihiko Takeda, Masaki Goto, Toshiyuki Matsumura
  • Patent number: 9601711
    Abstract: A composition for forming a transparent electrode is to form a conductive polymer layer on a transparent substrate. The composition includes: a conductive polymer; a self-dispersing polymer dispersible in an aqueous solvent; water; a polar solvent other than water; and a glycol ether. The self-dispersing polymer is a self-dispersing polymer containing a dissociable group and having a glass transition temperature of 25° C. or more and 80° C. or less.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: March 21, 2017
    Assignee: Konica Minolta, Inc.
    Inventors: Akihiko Takeda, Takatoshi Suematsu
  • Publication number: 20170054098
    Abstract: Provided an organic electroluminescent element which is configured to comprise: a substrate; a gas barrier layer that is arranged on the substrate; a smooth layer that is mainly composed of an oxide or nitride of Ti or Zr having an amorphous structure; a first electrode; a second electrode; and an organic function layer that is sandwiched between the first electrode and the second electrode. This organic electroluminescent element is able to achieve a good balance between gas barrier properties and flexibility adequacy.
    Type: Application
    Filed: May 12, 2015
    Publication date: February 23, 2017
    Inventors: Takaaki KUROKI, Akihiko TAKEDA, Yasunobu KOBAYASHI
  • Publication number: 20170005295
    Abstract: A light extraction layered body, characterized in being flexible enough to exhibit no cracking when a flex test is performed by inducing ten cycles of bending at a flex radius of 5 mm and a bend angle of 180° in a layered body in which a light extraction layer is provided on one main surface of a transparent substrate that measures 3 ?m to 50 ?m in thickness, and when subsequently a 500×500 ?m surface region is observed in the light extraction layer using a light diffraction microscope.
    Type: Application
    Filed: April 3, 2015
    Publication date: January 5, 2017
    Inventors: Akihiko TAKEDA, Takaaki KUROKI
  • Publication number: 20160315286
    Abstract: Provided is an organic electroluminescent element including a film substrate having thereon: at least one gas barrier layer, a light scatter layer, at least one smooth layer, and a light-emitting unit containing an organic functional layer interposed between a pair of electrodes, laminated in this order, wherein the light scatter layer contains a binder and light scatter particles having an average particle size of 0.2 ?m or more to less than 1 ?m; and the smooth layer contains an oxide or a nitride of silicone or niobium as a main component.
    Type: Application
    Filed: December 1, 2014
    Publication date: October 27, 2016
    Inventors: Takaaki KUROKI, Akihiko TAKEDA, Yasunobu KOBAYASHI
  • Patent number: 9402299
    Abstract: Disclosed is a transparent electrode which is configured of: a first conductive layer that is composed of a metal or metal oxide fine wire that is formed in a pattern on a substrate; and a second conductive layer that covers the first conductive layer and contains a conductive polymer. The transparent electrode is characterized in that the fine wire of the first conductive layer satisfies the conditions mentioned below. Also disclosed is an organic electronic element. Line width (W): 20-200 ?m Height (H): 0.2-2.0 ?m Aspect ratio: 0.001<H/W?0.1 Coefficient of cross-sectional shape: 0.6<S/(W·H)<0.9 (In this connection, S represents the cross-sectional area of the conductive layer.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: July 26, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Akihiko Takeda, Hirokazu Koyama
  • Publication number: 20150364713
    Abstract: A composition for forming a transparent electrode is to form a conductive polymer layer on a transparent substrate. The composition includes: a conductive polymer; a self-dispersing polymer dispersible in an aqueous solvent; water; a polar solvent other than water; and a glycol ether. The self-dispersing polymer is a self-dispersing polymer containing a dissociable group and having a glass transition temperature of 25° C. or more and 80° C. or less.
    Type: Application
    Filed: January 28, 2013
    Publication date: December 17, 2015
    Inventors: Akihiko Takeda, Takatoshi Suematsu
  • Publication number: 20150311443
    Abstract: A method for producing a transparent electrode includes a forming step, an applying step and an irradiating step. The forming step is a step of forming a conductive metal layer on a transparent resin substrate. The applying step is a step of applying a composition containing a conductive polymer and a nonconductive polymer over the transparent resin substrate and the conductive metal layer so as to form a conductive polymer layer. The irradiating step is a step of irradiating the conductive polymer layer with an infrared ray having a ratio of spectral radiance at a wavelength of 5.8 ?m to spectral radiance at a wavelength of 3.0 ?m of 5% or less.
    Type: Application
    Filed: October 3, 2013
    Publication date: October 29, 2015
    Inventors: Masaki GOTO, Akihiko TAKEDA, Toshiyuki MATSUMURA
  • Publication number: 20150189732
    Abstract: Disclosed is a transparent electrode which is configured of: a first conductive layer that is composed of a metal or metal oxide fine wire that is formed in a pattern on a substrate; and a second conductive layer that covers the first conductive layer and contains a conductive polymer. The transparent electrode is characterized in that the fine wire of the first conductive layer satisfies the conditions mentioned below. Also disclosed is an organic electronic element. Line width (W): 20-200 ?m Height (H): 0.2-2.0 ?m Aspect ratio: 0.001<H/W?0.1 Coefficient of cross-sectional shape: 0.6<S/(W·H)<0.9 (In this connection, S represents the cross-sectional area of the conductive layer.
    Type: Application
    Filed: March 11, 2015
    Publication date: July 2, 2015
    Inventors: Akihiko TAKEDA, Hirokazu KOYAMA
  • Patent number: 9005747
    Abstract: Disclosed is a transparent electrode which is configured of a first conductive layer that is composed of a metal or metal oxide fine wire that is formed in a pattern on a substrate; and a second conductive layer that covers the first conductive layer and contains a conductive polymer. The transparent electrode is characterized in that the fine wire of the first conductive layer satisfies the conditions mentioned below. Also disclosed is an organic electronic element. Line width (W): 20-200 ?m Height (H): 0.2-2.0 ?m Aspect ratio: 0.001<H/W?0.1 Coefficient of cross-sectional shape: 0.6<S/(W·H)<0.9 (In this connection, S represents the cross-sectional area of the conductive layer.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: April 14, 2015
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Akihiko Takeda, Hirokazu Koyama
  • Patent number: 8987720
    Abstract: The purpose of the present invention is to provide a transparent surface electrode that maintains high transparency, suppresses the occurrence of leak currents, and has superior storage stability and resistance to damage by bending, a method for manufacturing the same, and an organic electronic element using the same. This transparent surface electrode has a metal pattern conductive layer that contains a metal on a transparent base material, and the transparent surface electrode also has a transparent polymer conductive layer, which contains that base material and a conductive polymer, on that metal pattern conductive layer. The transparent surface electrode is characterized by the surface roughness (Ra (surface roughness provided for by JIS, B601 (1994))) of the metal pattern conductive layer being 20 nm or less, and the polymer conductive layer containing a non-conductive polymer having a hydroxyl group.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: March 24, 2015
    Assignee: Konica Minolta, Inc.
    Inventors: Takatoshi Suematsu, Akihiko Takeda
  • Publication number: 20150053950
    Abstract: A method for forming a transparent electrode includes a step of forming a thin metal wire on a transparent substrate; and a step of forming a transparent conductive layer on the transparent substrate and the thin metal wire. The step of forming the transparent conductive layer is a step of forming the transparent conductive layer by applying an application liquid onto the transparent substrate and the thin metal wire by printing. The application liquid is composed of a conductive polymer, a water-soluble binder having a structural unit represented by the following general formula (I), a polar solvent having a log P value of ?1.50 to ?0.45, and 5.0 to 25 mass % of a glycol ether.
    Type: Application
    Filed: February 14, 2013
    Publication date: February 26, 2015
    Inventors: Takatoshi Suematsu, Akihiko Takeda, Masaki Goto, Toshiyuki Matsumura
  • Publication number: 20140224322
    Abstract: A transparent electrode (1) comprises a transparent substrate (2); a metal conductive layer (4) composed of a metal thin line pattern; and a polymer conductive layer (6) including a conductive polymer containing a polymer acid. The metal conductive layer (4) is formed on/over the transparent substrate (2) and the metal conductive layer (4) is covered with the polymer conductive layer (6). The polymer conductive layer (6) has a surface specific resistance of 10,000?/? or smaller and the polymer acid contains a fluorinated polymer acid and a non-fluorinated polymer acid. In the polymer conductive layer (6) a concentration of the fluorinated polymer acid increases along a direction from the transparent substrate (2) towards the polymer conductive layer (6).
    Type: Application
    Filed: September 27, 2012
    Publication date: August 14, 2014
    Applicant: Konica Minolta, Inc.
    Inventors: Akihiko Takeda, Takatoshi Suematsu
  • Patent number: 8642118
    Abstract: The present invention can easily provide a method of manufacturing a pattern electrode with excellent electroconductivity and excellent transparency and a pattern electrode manufactured according to the method. The method of manufacturing a pattern electrode is characterized in that it comprises the steps of forming on a substrate an electroconductive layer containing metal nanowires, and carrying out pattern printing on the electroconductive layer employing a metal nanowire removing solution, followed by washing with water.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: February 4, 2014
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Masaki Goto, Akihiko Takeda, Kazuaki Nakamura
  • Publication number: 20130285041
    Abstract: The purpose of the present invention is to provide a transparent surface electrode that maintains high transparency, suppresses the occurrence of leak currents, and has superior storage stability and resistance to damage by bending, a method for manufacturing the same, and an organic electronic element using the same. This transparent surface electrode has a metal pattern conductive layer that contains a metal on a transparent base material, and the transparent surface electrode also has a transparent polymer conductive layer, which contains that base material and a conductive polymer, on that metal pattern conductive layer. The transparent surface electrode is characterized by the surface roughness (Ra (surface roughness provided for by JIS, B601 (1994))) of the metal pattern conductive layer being 20 nm or less, and the polymer conductive layer containing a non-conductive polymer having a hydroxyl group.
    Type: Application
    Filed: December 7, 2011
    Publication date: October 31, 2013
    Applicant: KONICA MINOLTA, INC.
    Inventors: Takatoshi Suematsu, Akihiko Takeda
  • Publication number: 20130101732
    Abstract: Disclosed is a transparent electrode including a transparent substrate having thereon a conductive fiber, a conductive polymer and a water soluble binder resin, wherein a content of the water soluble binder resin is in the range of 1 to 200 weight % based on a weight of the conductive polymer.
    Type: Application
    Filed: December 17, 2012
    Publication date: April 25, 2013
    Inventors: Kazuaki NAKAMURA, Norio MIURA, Akihiko TAKEDA, Masaki GOTO
  • Publication number: 20130014980
    Abstract: Disclosed is a transparent electrode which is configured of a first conductive layer that is composed of a metal or metal oxide fine wire that is formed in a pattern on a substrate; and a second conductive layer that covers the first conductive layer and contains a conductive polymer. The transparent electrode is characterized in that the fine wire of the first conductive layer satisfies the conditions mentioned below. Also disclosed is an organic electronic element Line width (W): 20-200 ?m Height (H): 0.2-2.0 ?m Aspect ratio: 0.001<H/W?0.1 Coefficient of cross-sectional shape: 0.6<S/(W·H)<0.9 (In this connection, S represents the cross-sectional area of the conductive layer.
    Type: Application
    Filed: March 25, 2011
    Publication date: January 17, 2013
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Akihiko Takeda, Hirokazu Koyama