Patents by Inventor Takaaki Kuroki

Takaaki Kuroki 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: 20190288227
    Abstract: Provided is an organic electro-luminescence emission device wherein a color adjustment layer causes the chroma C* of transmitted light from the organic electro-luminescence emission device when not emitting light to be less than that of transmitted light from an organic electro-luminescence emission device not having a color adjustment layer when not emitting light, thus allowing the chroma of the transmitted light at non-emitting time to approach 0.
    Type: Application
    Filed: July 21, 2017
    Publication date: September 19, 2019
    Inventors: Shigeru KOJIMA, Shusaku KON, Takaaki KUROKI, Takeshi HAKII, Koujirou SEKINE, Kou OSAWA
  • Patent number: 10305063
    Abstract: An object of the present invention is to provide a transparent organic electroluminescence element in which durability is excellent, a transparent lead-out electrode of low resistance is provided, and there is no uncomfortable feeling in visibility of the entire element. The transparent organic electroluminescence element according to the present invention is a transparent organic electroluminescence element including: at least an organic electroluminescence element portion and a lead-out electrode portion, in which two-sided light emission is capable of being performed, wherein a total light transmittance (%) of the lead-out electrode portion in a visible light range is in a range of 90% to 110%, with respect to a total light transmittance (%) of the organic electroluminescence element portion in a visible light range at the time of non-light emission.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: May 28, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Takaaki Kuroki, Takatoshi Suematsu, Shigeru Kojima, Shusaku Kon
  • Publication number: 20190006614
    Abstract: An object of the present invention is to provide a transparent organic electroluminescence element in which durability is excellent, a transparent lead-out electrode of low resistance is provided, and there is no uncomfortable feeling in visibility of the entire element. The transparent organic electroluminescence element according to the present invention is a transparent organic electroluminescence element including: at least an organic electroluminescence element portion and a lead-out electrode portion, in which two-sided light emission is capable of being performed, wherein a total light transmittance (%) of the lead-out electrode portion in a visible light range is in a range of 90% to 110%, with respect to a total light transmittance (%) of the organic electroluminescence element portion in a visible light range at the time of non-light emission.
    Type: Application
    Filed: August 25, 2016
    Publication date: January 3, 2019
    Inventors: Takaaki KUROKI, Takatoshi SUEMATSU, Shigeru KOJIMA, Shusaku KON
  • Publication number: 20180269430
    Abstract: An object of the present invention is to provide an organic EL device having a high light transmittance and a small difference in light transmittance between a light emitting region and a non-light emitting region.
    Type: Application
    Filed: June 1, 2016
    Publication date: September 20, 2018
    Inventors: Shigeru KOJIMA, Shusaku KON, Takatoshi SUEMATSU, Takaaki KUROKI
  • Patent number: 10032826
    Abstract: Provided is a light extraction substrate capable of achieving both light extraction efficiency and preservability. Before forming a cap layer, a step of reducing in-membrane water content such that the in-membrane water content of a layer formed between a gas barrier layer and the cap layer is less than 1.0×1015/mg is performed. The in-membrane water content of less than 1.0×1015/mg is maintained until at least a step of forming the cap layer after the step of reducing the in-membrane water content, and the cap layer is then formed through a dry process.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: July 24, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Takaaki Kuroki, Yasunobu Kobayashi
  • Publication number: 20180175315
    Abstract: An organic EL element includes a gas barrier film including: a resin base material; a light scattering layer provided on the resin base material; a smoothing layer provided on the light scattering layer; and a gas barrier layer provided on the smoothing layer, wherein the arithmetic average roughness (Ra) of the surface of the gas barrier layer is from 0 nm to 3 nm, and the average of the diameters in the planar direction of the convexities formed on the surface of the gas barrier layer is 50 nm or larger.
    Type: Application
    Filed: March 18, 2016
    Publication date: June 21, 2018
    Inventors: Shusaku KON, Takaaki KUROKI, Yasunobu KOBAYASHI
  • 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
  • Publication number: 20170309677
    Abstract: Provided is a light extraction substrate capable of achieving both light extraction efficiency and preservability. Before forming a cap layer, a step of reducing in-membrane water content such that the in-membrane water content of a layer formed between a gas barrier layer and the cap layer is less than 1.0×1015/mg is performed. The in-membrane water content of less than 1.0×1015/mg is maintained until at least a step of forming the cap layer after the step of reducing the in-membrane water content, and the cap layer is then formed through a dry process.
    Type: Application
    Filed: October 20, 2015
    Publication date: October 26, 2017
    Inventors: Takaaki KUROKI, Yasunobu KOBAYASHI
  • Patent number: 9680129
    Abstract: A method of manufacturing an organic light emitting element equipped with a transparent substrate, an internal light extracting layer, and a transparent metal electrode includes: forming the internal light extracting layer on the transparent substrate, and forming the transparent metal electrode on the internal light extracting layer. The step of forming the internal light extracting layer includes: applying a coating solution onto the transparent substrate into a predetermined pattern, the coating solution containing a light scattering particle having an average particle size of 0.2 ?m or more and less than 1 ?m and a refractive index of 1.7 or more and less than 3.0 and a hydroxy-containing solvent, and drying the applied patterned coating solution through irradiation with infrared light having a proportion of 5% or less of a spectral radiance at a wavelength of 5.8 ?m to a spectral radiance at a wavelength of 3.0 ?m.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: June 13, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventor: Takaaki Kuroki
  • Patent number: 9608228
    Abstract: An organic light-emitting device includes an internal light extraction layer including a scattering layer and a smooth layer; and a transparent electrode including an underlying layer and an electrode layer, wherein the transparent electrode is provided on the smooth layer side of the internal light extraction layer, the internal light extraction layer has a refractive index in the range of 1.7 to less than 2.5, and the electrode layer includes silver or an alloy including silver as a main component.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: March 28, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventor: Takaaki Kuroki
  • 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
  • Patent number: 9543546
    Abstract: The purpose of the present invention is to provide an organic light-emitting element that comprises an internal light extraction layer on a flexible transparent substrate, that has high luminous efficiency by means of light extraction, and that prevents the breakage and partial or complete separation of electrodes when the organic light-emitting element is repeatedly bent. The organic light-emitting element according to the present invention has an internal light extraction layer, a transparent electrode, and an organic light-emitting layer in this order on the flexible transparent substrate, wherein the value of the ratio (D) represented by formula 1 between the elastic modulus (EMI) of the surface of the internal light extraction layer and the elastic modulus (EMS) of the surface of the transparent electrode side of the transparent substrate is within the range of 100±30%. D (%)=(EMI/EMS)×100(%).
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: January 10, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventor: Takaaki Kuroki
  • 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
  • Publication number: 20160155988
    Abstract: The purpose of the present invention is to provide an organic light-emitting element that comprises an internal light extraction layer on a flexible transparent substrate, that has high luminous efficiency by means of light extraction, and that prevents the breakage and partial or complete separation of electrodes when the organic light-emitting element is repeatedly bent. The organic light-emitting element according to the present invention has an internal light extraction layer, a transparent electrode, and an organic light-emitting layer in this order on the flexible transparent substrate, wherein the value of the ratio (D) represented by formula 1 between the elastic modulus (EMI) of the surface of the internal light extraction layer and the elastic modulus (EMS) of the surface of the transparent electrode side of the transparent substrate is within the range of 100±30%. Formula 1 D (%)=(EMI/EMS)×100(%).
    Type: Application
    Filed: June 4, 2014
    Publication date: June 2, 2016
    Applicant: Konica Minolta, Inc.
    Inventor: Takaaki KUROKI
  • Publication number: 20160020429
    Abstract: A method of manufacturing an organic light emitting element equipped with a transparent substrate, an internal light extracting layer, and a transparent metal electrode includes: forming the internal light extracting layer on the transparent substrate, and forming the transparent metal electrode on the internal light extracting layer. The step of forming the internal light extracting layer includes: applying a coating solution onto the transparent substrate into a predetermined pattern, the coating solution containing a light scattering particle having an average particle size of 0.2 ?m or more and less than 1 ?m and a refractive index of 1.7 or more and less than 3.0 and a hydroxy-containing solvent, and drying the applied patterned coating solution through irradiation with infrared light having a proportion of 5% or less of a spectral radiance at a wavelength of 5.8 ?m to a spectral radiance at a wavelength of 3.0 ?m.
    Type: Application
    Filed: February 20, 2014
    Publication date: January 21, 2016
    Inventor: Takaaki KUROKI
  • Publication number: 20150340641
    Abstract: An organic light-emitting device includes an internal light extraction layer including a scattering layer and a smooth layer; and a transparent electrode including an underlying layer and an electrode layer, wherein the transparent electrode is provided on the smooth layer side of the internal light extraction layer, the internal light extraction layer has a refractive index in the range of 1.7 to less than 2.5, and the electrode layer includes silver or an alloy including silver as a main component.
    Type: Application
    Filed: December 6, 2013
    Publication date: November 26, 2015
    Inventor: Takaaki KUROKI
  • Publication number: 20140103321
    Abstract: An organic electroluminescent element may be provided that emits white light by energization which may include: an anode; a cathode; and two light-emitting layers provided between the anode and the cathode, each of the light-emitting layers comprising a host material and a phosphorescent dopant, wherein the host materials in the respective light-emitting layers are different from each other, at least one of the phosphorescent dopants in the respective light-emitting layers is a blue phosphorescent dopant having an ionization potential (Ip) of 5.3 eV or less, at least one of the two light-emitting layers comprises a plurality of the phosphorescent dopants, and at least a first layer has a concentration gradient of the blue phosphorescent dopant where the concentration of the blue phosphorescent dopant in an anode side is higher in the light-emitting layer in thickness direction.
    Type: Application
    Filed: April 16, 2012
    Publication date: April 17, 2014
    Applicant: KONICA MINOLTA, INC.
    Inventors: Shun Furukawa, Takaaki Kuroki
  • Publication number: 20140027751
    Abstract: An organic electroluminescent element that emits white light by energization may include a pair of electrodes; and two light-emitting layers provided between the electrodes, each of the light-emitting layers including a host material and a phosphorescence-emitting dopant. The host materials included in the respective light-emitting layers may be different from each other, at least one of the phosphorescence-emitting dopants included in the respective light-emitting layers may be a blue phosphorescence-emitting dopant having an ionization potential (Ip) of 5.3 eV or less, and at least one of the two light-emitting layers may include a plurality of the phosphorescence-emitting dopants.
    Type: Application
    Filed: March 28, 2012
    Publication date: January 30, 2014
    Applicant: KONICA MINOLTA, INC.
    Inventors: Shun Furukawa, Takaaki Kuroki
  • Publication number: 20090263744
    Abstract: The present invention provides a novel ethylenically unsaturated compound which is highly sensitive to scanning exposure due to an ultraviolet to near-infrared laser and is cured to give good physical properties; a light sensitive composition providing good developability and high sensitivity and forming a high strength layer; a planographic printing plate material having advantages that good developability, high sensitivity and high strength layer are obtained, particularly a planographic printing plate material requiring no developing machine which are mounted on a printing press without any development, followed by printing and which provides excellent developability on a printing press and printing durability; and a printing process. The ethylenically unsaturated compound has in the molecule a photo-oxidation group and a polymerizable ethylenically unsaturated bond, and has a predetermined solubility in water or an aqueous alkali solution.
    Type: Application
    Filed: December 7, 2006
    Publication date: October 22, 2009
    Inventor: Takaaki Kuroki