Patents by Inventor Kenji Okumoto

Kenji Okumoto 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: 10236472
    Abstract: A method for producing a light-emitting device includes preparing a supporting substrate forming a porous layer on or above the supporting substrate, the porous layer being an organic material layer and containing a plurality of pores, and forming a transparent substrate on or above the porous layer. The method further includes forming a light-emitting element on or above the transparent substrate, breaking the porous layer at a portion inside the porous layer or at an interface between the supporting substrate and the porous layer, and separating the supporting substrate from the transparent substrate while at least part of the broken porous layer is attached to the transparent substrate.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: March 19, 2019
    Assignee: PANASONIC CORPORATION
    Inventors: Kenji Okumoto, Yuji Tanaka
  • Patent number: 10202693
    Abstract: A gas barrier film includes two or more first barrier layers each made of a first inorganic material and one or more second barrier layers each made of a second inorganic material different from the first inorganic material. Each of the two or more first barrier layers and each of the one or more second barrier layers are alternately stacked. The first inorganic material comprises aluminum oxide. Each of the two or more first barrier layers has a thickness of 3 nm or more. The total thickness of the two or more first barrier layers is 20 nm or less. The two or more first barrier layers and the one or more second barrier layers are formed by atomic layer deposition.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: February 12, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masaomi Shibata, Kenji Okumoto, Gosuke Sakamoto
  • Publication number: 20180151841
    Abstract: A method for producing a light-emitting device includes preparing a supporting substrate forming a porous layer on or above the supporting substrate, the porous layer being an organic material layer and containing a plurality of pores, and forming a transparent substrate on or above the porous layer. The method further includes forming a light-emitting element on or above the transparent substrate, breaking the porous layer at a portion inside the porous layer or at an interface between the supporting substrate and the porous layer, and separating the supporting substrate from the transparent substrate while at least part of the broken porous layer is attached to the transparent substrate.
    Type: Application
    Filed: January 29, 2018
    Publication date: May 31, 2018
    Applicant: PANASONIC CORPORATION
    Inventors: Kenji OKUMOTO, Yuji TANAKA
  • Patent number: 9925754
    Abstract: A manufacturing method of a flexible device comprises: an adjustment step of adjusting adhesive characteristics of an adhesive layer formed over a supporting substrate; a temporary bonding step of temporarily bonding the flexible substrate; an electronic device formation step of forming an electronic device; and a separation step of separating the flexible substrate. In the adjustment step, the adhesive characteristics of the adhesive layer are adjusted to satisfy a relationship of PB<PA, where PA denotes a peel strength of the adhesive layer after the electronic device formation step, in a case where the adhesive layer undergoes the electronic device formation step without undergoing the adjustment step, and PB denotes a peel strength of the adhesive layer after the electronic device formation step, in a case where the adhesive layer undergoes the electronic device formation step after undergoing the adjustment step.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: March 27, 2018
    Assignee: PANASONIC CORPORATION
    Inventors: Yuji Tanaka, Kenji Okumoto
  • Patent number: 9923172
    Abstract: A light-emitting device includes a transparent substrate having a first surface and a second surface opposite to the first surface. A light-emitting element is provided on the first surface of the transparent substrate and emits light. A porous layer is provided on the second surface of the transparent substrate, the porous layer including an organic material and having pores. The porous layer does not include an inorganic compound.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: March 20, 2018
    Assignee: PANASONIC CORPORATION
    Inventors: Kenji Okumoto, Yuji Tanaka
  • Publication number: 20170062766
    Abstract: A light-emitting device includes a transparent substrate having a first surface and a second surface opposite to the first surface. A light-emitting element is provided on the first surface of the transparent substrate and emits light. A porous layer is provided on the second surface of the transparent substrate, the porous layer including an organic material and having pores. The porous layer does not include an inorganic compound.
    Type: Application
    Filed: November 9, 2016
    Publication date: March 2, 2017
    Applicant: PANASONIC CORPORATION
    Inventors: Kenji OKUMOTO, Yuji TANAKA
  • Patent number: 9544997
    Abstract: A multi-layered film includes: a plate-like flexible base member; first inorganic members that are each plate-like and arranged on the base member in separation from each other in a direction parallel to a main surface of the base member; a first organic member provided on the base member so as to be positioned between each adjacent two first inorganic members and surround each first inorganic member; a second inorganic member that covers an upper surface and lateral surfaces of the first organic member; and a second organic member that is provided on or above the first inorganic members, and is surrounded by the second inorganic member. Each lateral surface portion of the second inorganic member covering a corresponding lateral surface of the first organic member is thinner than each first inorganic member and each upper surface portion of the second inorganic member covering a corresponding portion of the upper surface.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: January 10, 2017
    Assignee: PANASONIC CORPORATION
    Inventors: Kenji Okumoto, Arinobu Kanegae
  • Patent number: 9530986
    Abstract: A light-emitting device includes a transparent substrate, a light-emitting element arranged on or above one main surface of the transparent substrate, and a porous layer arranged on or above the other main surface of the transparent substrate, the porous layer being an organic material layer having a plurality of pores. Inner surfaces of some pores among the plurality of pores may be exposed at a main surface of the porous layer opposite to a side on which the transparent substrate lies. A gas may be present in the pores the inner surfaces of which are exposed.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: December 27, 2016
    Assignee: PANASONIC CORPORATION
    Inventors: Kenji Okumoto, Yuji Tanaka
  • Patent number: 9240435
    Abstract: Disclosed is a coated type organic EL display wherein the light extraction efficiencies of all organic light-emitting elements are improved even when the organic light-emitting elements have different organic light-emitting layers for respective emission colors. Specifically disclosed is an organic EL display which comprises a substrate, a red organic light-emitting element (R), a green organic light-emitting element (G), and a blue organic light-emitting element (B), said organic light-emitting elements being arranged on the substrate. Each of the organic light-emitting elements has a pixel electrode that is a reflective electrode, a functional layer that is formed on the pixel electrode by coating, an organic light-emitting layer that is arranged on the functional layer, a counter electrode that is a transparent electrode arranged on the organic light-emitting layer, and a tapered bank that defines the functional layer formed by coating.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: January 19, 2016
    Assignee: JOLED INC
    Inventors: Hidehiro Yoshida, Kenji Okumoto, Tsuneyuki Ejima, Shuhei Nakatani
  • Patent number: 9231156
    Abstract: A method for manufacturing a light-emitting device, comprising: forming, over a substrate, a plurality of multilayered light-emitting structures each including a first electrode, a light-emitting layer, and a second electrode; forming, in the substrate, a plurality of grooves that surround the multilayered light-emitting structures individually; forming, over the substrate, a sealing film that covers the multilayered light-emitting structures and the grooves; and separating the multilayered light-emitting structures from one another after forming the sealing film, by cutting the substrate such that, in each groove, part of the sealing film covering a given inner side surface of the groove remains, the given inner side surface being adjacent to any of the multilayered light-emitting structures.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: January 5, 2016
    Assignee: PANASONIC CORPORATION
    Inventors: Hiroaki Yamane, Gosuke Sakamoto, Kenji Okumoto
  • Patent number: 9231031
    Abstract: Disclosed is a coated type organic EL display wherein the light extraction efficiencies of all organic light-emitting elements are improved even when the organic light-emitting elements have different organic light-emitting layers for respective emission colors. Specifically disclosed is an organic EL display which comprises a substrate and a red organic light-emitting element (R), a green organic light-emitting element (G), and a blue organic light-emitting element (B) arranged on the substrate. Each organic light-emitting element has a pixel electrode that is a reflective electrode, a functional layer formed on the pixel electrode by coating, an organic light-emitting layer arranged on the functional layer, a counter electrode that is a transparent electrode arranged on the organic light-emitting layer, and a tapered bank that defines the functional layer formed by coating. A dimension of a bank-to-bank gap at a top of the bank differs among the R, G, and B elements.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: January 5, 2016
    Assignee: JOLED INC.
    Inventors: Hidehiro Yoshida, Kenji Okumoto, Tsuneyuki Ejima, Shuhei Nakatani
  • Publication number: 20150343741
    Abstract: A gas barrier film includes two or more first barrier layers each made of a first inorganic material and one or more second barrier layers each made of a second inorganic material different from the first inorganic material. Each of the two or more first barrier layers and each of the one or more second barrier layers are alternately stacked. The first inorganic material comprises aluminum oxide. Each of the two or more first barrier layers has a thickness of 3 nm or more. The total thickness of the two or more first barrier layers is 20 nm or less. The two or more first barrier layers and the one or more second barrier layers are formed by atomic layer deposition.
    Type: Application
    Filed: May 20, 2015
    Publication date: December 3, 2015
    Inventors: MASAOMI SHIBATA, KENJI OKUMOTO, GOSUKE SAKAMOTO
  • Patent number: 9136475
    Abstract: The present invention is to provide a method of favorably forming an organic EL device with the inverted structure by the wet process. On that account, an organic EL device includes a cathode, an electron injection layer, a light emitting layer, a hole transport layer, a hole injection layer, an anode are formed in this order on a substrate. The electron injection layer is formed by applying ink between banks and drying the ink. The ink is formed by dissolving a polymer compound having an organic phosphine oxide skeleton in an alcohol solvent. The light emitting layer is formed by applying ink between components of the bank and the drying the ink. The ink is formed by dissolving material for light emitting layer such as polyphenylene vinylene (PPV) derivative or polyfluorene derivative in a nonpolar solvent.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: September 15, 2015
    Assignees: JOLED INC., DYDEN CORPORATION
    Inventors: Kenji Okumoto, Gosuke Sakamoto, Masaomi Shibata, Izumi Kakinoki, Masataka Watanabe, Tomoko Matoba, Mitsuharu Noto, Yasuyuki Goto
  • Patent number: 9093397
    Abstract: Flexible device manufacturing method including: forming thin film by coating surface of support with predetermined solution in state where hydroxyl groups are present on surface; forming releasing layer by baking thin film; forming flexible substrate on releasing layer; forming device on flexible substrate; and releasing releasing layer, flexible substrate and device from support at interface between support and releasing layer. Predetermined solution contains alkylsilane alkoxide derivative and titanium alkoxide derivative. Baking temperature for baking thin film is at least 200° C. and at most 350° C. Ratio of number of silicon atoms in alkylsilane alkoxide derivative to number of titanium atoms in titanium alkoxide derivative is 3.3:1 to 4.1:1 when baking temperature is at least 200° C. and less than 270° C., 3.3:1 to 23:1 when baking temperature is at least 270° C. and at most 330° C., and 19:1 to 23:1 when baking temperature is more than 330° C. and at most 350° C.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: July 28, 2015
    Assignee: PANASONIC CORPORATION
    Inventors: Yuji Tanaka, Kenji Okumoto
  • Publication number: 20150200333
    Abstract: A light-emitting device includes a transparent substrate, a light-emitting element arranged on or above one main surface of the transparent substrate, and a porous layer arranged on or above the other main surface of the transparent substrate, the porous layer being an organic material layer having a plurality of pores. Inner surfaces of some pores among the plurality of pores may be exposed at a main surface of the porous layer opposite to a side on which the transparent substrate lies. A gas may be present in the pores the inner surfaces of which are exposed.
    Type: Application
    Filed: December 18, 2014
    Publication date: July 16, 2015
    Inventors: KENJI OKUMOTO, YUJI TANAKA
  • Patent number: 9048206
    Abstract: An organic EL display panel has a transistor array substrate, an inter-layer insulation film, pixel electrodes, an organic EL layer, and a common electrode. The transistor array substrate has drive units, including TFT elements. The inter-layer insulation film covers the transistor array substrate, and has contact holes corresponding to the drive units. The pixel electrodes on the inter-layer insulation film correspond to the drive units, and are electrically connected thereto via the contact holes. The organic EL layer covers regions where the pixel electrodes are and are not disposed. The common electrode covers the entire organic EL layer. Organic EL layer regions corresponding to the contact holes of the inter-layer insulation film and between neighboring pixel electrodes have greater electrical resistance than other regions.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: June 2, 2015
    Assignee: JOLED INC.
    Inventors: Kenji Okumoto, Masaomi Shibata
  • Publication number: 20150108458
    Abstract: An organic EL element of the present disclosure is an organic EL element having an inverted structure including a first hole injection layer containing a first organic material whose LUMO level is ?4 eV or less. The organic EL element further includes a second hole injection layer containing a second organic material. The second hole injection layer is disposed between the first hole injection layer and an anode. The roughness of a principal surface of the second hole injection layer on the side of the anode is smaller than the roughness of a principal surface of the first hole injection layer on the side of the second hole injection layer. L1, L2, and EA satisfy formula: ?EA?2 eV?L2?L1+2 eV, where the first organic material has a LUMO level L1, the second organic material has a LUMO level L2, and the anode has an electron affinity EA.
    Type: Application
    Filed: October 22, 2014
    Publication date: April 23, 2015
    Inventors: MASAOMI SHIBATA, KENJI OKUMOTO, GOSUKE SAKAMOTO
  • Publication number: 20140254112
    Abstract: A multi-layered film includes: a plate-like flexible base member; first inorganic members that are each plate-like and arranged on the base member in separation from each other in a direction parallel to a main surface of the base member; a first organic member provided on the base member so as to be positioned between each adjacent two first inorganic members and surround each first inorganic member; a second inorganic member that covers an upper surface and lateral surfaces of the first organic member; and a second organic member that is provided on or above the first inorganic members, and is surrounded by the second inorganic member. Each lateral surface portion of the second inorganic member covering a corresponding lateral surface of the first organic member is thinner than each first inorganic member and each upper surface portion of the second inorganic member covering a corresponding portion of the upper surface.
    Type: Application
    Filed: February 28, 2014
    Publication date: September 11, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Kenji OKUMOTO, Arinobu KANEGAE
  • Patent number: 8823254
    Abstract: A display panel apparatus includes pixels. Each pixel includes an organic luminescent layer between an upper electrode and a lower electrode and is configured to emit a red, a green, or a blue light. A glass substrate is above the upper electrode. A lens sheet is between the pixels and the glass substrate and includes lenses and a base. Each lens corresponds to a pixel and protrudes from the base. Partitions are between the glass substrate and the lens sheet for partitioning the lenses. The partitions have a first height that is greater than a second height of the lenses. The base includes trenches between the lenses. The trenches are recessed in a direction opposite the lenses. The partitions are in the trenches. Each partition has a cross-section that includes an upper side that has a different length than a bottom side and lateral sides that are tilted.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: September 2, 2014
    Assignee: Panasonic Corporation
    Inventors: Takashi Ohta, Masahiro Kasano, Kenji Okumoto
  • Patent number: RE48033
    Abstract: A method for manufacturing a light-emitting device, comprising: forming, over a substrate, a plurality of multilayered light-emitting structures each including a first electrode, a light-emitting layer, and a second electrode; forming, in the substrate, a plurality of grooves that surround the multilayered light-emitting structures individually; forming, over the substrate, a sealing film that covers the multilayered light-emitting structures and the grooves; and separating the multilayered light-emitting structures from one another after forming the sealing film, by cutting the substrate such that, in each groove, part of the sealing film covering a given inner side surface of the groove remains, the given inner side surface being adjacent to any of the multilayered light-emitting structures.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: June 2, 2020
    Assignee: PANASONIC CORPORATION
    Inventors: Hiroaki Yamane, Gosuke Sakamoto, Kenji Okumoto