Patents by Inventor Hidehiro Yoshida

Hidehiro Yoshida 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: 7812345
    Abstract: The present invention relates to an organic EL display panel having an organic light emitting layer having a uniform film thickness. The organic EL display panel of the present invention includes: a substrate; linear banks placed on the substrate and defining a linear region on the substrate; and at least two organic EL elements aligned in a row each linear region, and, each of the organic EL elements includes: an anode placed on the substrate; a hole injection layer formed with an metallic oxide and placed on the anode; an organic light emitting layer placed on the hole injection layer; and a cathode placed on the organic light emitting layer. The hole injection layer is concavely curved or convexly curved, the hole injection layer is partly placed under the banks; and the organic light emitting layer is formed by applying an organic light emitting material in the linear region.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: October 12, 2010
    Assignee: Panasonic Corporation
    Inventors: Hidehiro Yoshida, Kenji Okumoto, Keisei Yamamuro
  • Publication number: 20100252857
    Abstract: Disclosed is a method for manufacturing an organic EL device which comprises a hole injection layer having a flat surface that is not contaminated. Specifically disclosed method for manufacturing an organic EL device, which comprises a step of forming an anode on a substrate; a step of forming a hole injection layer on the anode; a step of forming an inorganic film on the substrate and the hole injection layer; a step of forming a bank on the inorganic film in such a manner that at least a part of the inorganic film formed on the hole injection layer is exposed; a step of etching the exposed inorganic film by using the bank as a mask so that the hole injection layer is exposed therefrom; and a step of forming an organic light-emitting layer by applying an organic light-emitting material onto the exposed hole injection layer. The hole injection layer contains tungsten oxide or molybdenum oxide.
    Type: Application
    Filed: December 2, 2008
    Publication date: October 7, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Shuhei Nakatani, Hidehiro Yoshida
  • Publication number: 20100219424
    Abstract: An organic EL display panel is provided which includes: a substrate which includes a plurality of luminescent regions which are arranged side by side in a specific direction and run in parallel to one another; a bank formed over the substrate, the bank defining a plurality of coating regions in each of the luminescent regions, the coating regions being aligned in a row along the long axis of the luminescent region; and a pixel electrode provided in each of the coating regions, the pixel electrode having a long axis which is in parallel with the long axis of the luminescent region, wherein, in each of the luminescent regions, the coating region positioned at a lengthwise end of the luminescent region is larger in size than the coating region positioned at a lengthwise center of the luminescent region.
    Type: Application
    Filed: August 17, 2009
    Publication date: September 2, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Hidehiro Yoshida, Kenji Okumoto, Keisei Yamamuro
  • Publication number: 20100213442
    Abstract: Provided is a semiconductor device comprising an organic semiconductor element A and an organic semiconductor element B, wherein the organic semiconductor element A has a source electrode and a drain electrode disposed on a surface of a substrate; a channel gap disconnecting the source electrode and the drain electrode; an organic semiconductor layer disposed on the source electrode, the drain electrode and the channel gap; an insulating film disposed on the organic semiconductor layer; a gate electrode disposed on the insulating film; a bank defining the organic semiconductor layer; a and groove through the bank, a distance between the apex of the bank and the surface of a substrate is greater than a distance between the apex of the channel gap and the surface of the substrate, and the organic semiconductor element B has a source electrode or a drain electrode connected with the gate electrode of the organic semiconductor element A via the groove through the bank of the organic semiconductor element A.
    Type: Application
    Filed: December 14, 2007
    Publication date: August 26, 2010
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Hidehiro Yoshida, Hisao Nagai, Yoshiro Kitamura
  • Publication number: 20100213827
    Abstract: Disclosed is an organic EL device which comprises an organic light-emitting layer having a uniform thickness even though the organic light-emitting layer is formed by a coating method. Specifically disclosed is an organic EL device comprising a substrate, an anode arranged on the substrate, an organic light-emitting layer arranged on the anode, and a bank defining an arrangement region for the organic light-emitting layer. A groove is formed on the upper surface of the bank, and the outer or inner edge of the groove defines the border of the organic light-emitting layer.
    Type: Application
    Filed: December 25, 2008
    Publication date: August 26, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Hidehiro Yoshida, Arinobu Kanegae, Shuhei Nakatani, Keisei Yamamuro
  • Patent number: 7781963
    Abstract: An organic EL display panel having a functional layer with a uniform film thickness is provided. The organic EL display panel of the present invention contains an anode electrode set on a substrate; line-state banks set on the substrate on which the anode electrode is set and defining a line-state region; a hole transport layers arranged in matrix state on the substrate, the hole transport layer being set in the line-state region; a line-state interlayer set in the line-state region; a line-state organic EL layer set in the line-state region; and a cathode electrode provided on the organic EL layer, and the bank contains a fluorine resin.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: August 24, 2010
    Assignee: Panasonic Corporation
    Inventors: Hidehiro Yoshida, Yoshiro Kitamura, Shuhei Nakatani, Hisao Nagai
  • Patent number: 7764014
    Abstract: An organic EL display panel having a polymer organic EL layer with a uniform thickness is provided. The organic EL display panel includes a substrate, anode electrodes set on the substrate; a hole transport layer provided on the substrate on which the anode electrodes are set; banks provided in lines on the hole transport layer to define line-state pixel regions; an interlayer set in a line in the pixel region; a polymer organic EL layer set in a line on the interlayer in the pixel region; and a cathode electrode provided on the polymer organic EL layer.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: July 27, 2010
    Assignee: Panasonic Corporation
    Inventors: Hidehiro Yoshida, Yoshiro Kitamura, Keisei Yamamuro
  • Publication number: 20100181554
    Abstract: The present invention relates to an organic EL display panel having an organic light emitting layer having a uniform film thickness. The organic EL display panel of the present invention includes: a substrate; linear banks placed on the substrate and defining a linear region on the substrate; and at least two organic EL elements aligned in a row each linear region, and, each of the organic EL elements includes: an anode placed on the substrate; a hole injection layer formed with an metallic oxide and placed on the anode; an organic light emitting layer placed on the hole injection layer; and a cathode placed on the organic light emitting layer. The hole injection layer is concavely curved or convexly curved, the hole injection layer is partly placed under the banks; and the organic light emitting layer is formed by applying an organic light emitting material in the linear region.
    Type: Application
    Filed: January 30, 2009
    Publication date: July 22, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Hidehiro Yoshida, Kenji Okumoto, Keisei Yamamuro
  • Publication number: 20100181559
    Abstract: Disclosed is an organic EL display panel which includes: a substrate; a linear first bank which is disposed over the substrate and defines a linear region; a second bank which defines two or more pixel regions arranged in the linear region; a pixel electrode disposed in the pixel region; a linear organic layer which is formed by coating method in the linear region over the pixel electrode and second bank; and a counter electrode over the organic layer, wherein the first bank is larger in height than the second bank, the first and second banks are made of resin, anisole contact angle at the top of the first bank is 30-60°, and anisole contact angle at the top of the second bank is 5-30°.
    Type: Application
    Filed: June 2, 2009
    Publication date: July 22, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Shuhei Nakatani, Hidehiro Yoshida, Kiyohiko Takagi
  • Publication number: 20100171415
    Abstract: A light-emitting device includes a first electrode, a second electrode, a light-emitting layer between the first electrode and the second electrode, and banks that delimit the light-emitting layer. An upper surface of the light-emitting layer has a pair of sloping portions that each slope upward toward a lateral surface of one of the banks. The light-emitting layer is thicker about a lower boundary position than at a center of the light-emitting layer. The boundary position corresponds to an intersection of a lower surface of the light-emitting layer and the lateral surface of one of the banks. A width of each sloping portion is at least approximately 2 ?m and at most approximately 10% of a width of the light-emitting layer. Thus, it is possible to obtain a light-emitting device having a long life and having less variation in the luminance and an organic EL display apparatus having such a light-emitting device.
    Type: Application
    Filed: November 12, 2009
    Publication date: July 8, 2010
    Applicant: Panasonic Corporation
    Inventors: Kaori AKAMATSU, Hidehiro YOSHIDA
  • Patent number: 7710029
    Abstract: An organic EL display panel having a functional layer with a uniform film thickness is provided. The organic EL display panel of the present invention contains anode electrodes set on the substrate; organic EL layers set on the anode electrodes; line-state banks defining the organic EL layers in a line-state region; second banks defining two or more regions in the line-state region. The line-state banks and the second banks contain a fluorine resin, a fluorine concentration of the fluorine resin gradually changes along a thickness direction of each of the line-state bank and the second bank, and the fluorine concentration at a top of each of the line-state bank and the second bank is higher than the fluorine concentration at a bottom surface of each of the line-state bank and the second bank.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: May 4, 2010
    Assignee: Panasonic Corporation
    Inventors: Hidehiro Yoshida, Yoshiro Kitamura, Shuhei Nakatani, Hisao Nagai
  • Patent number: 7683537
    Abstract: An organic EL device that increases light emission efficiency by promoting the uniformity of light-emitting layer thickness while reducing the interval between pixel regions, and a display provided with the organic EL device. An organic EL device (10) has two or more first banks (230) extending in a line state, a plurality of second banks (240) that define pixel regions (300) by dividing a region between the adjacent first banks (230) and have a height lower than that of the first bank (230), a hole transport layer (250) provided independently for each pixel region (300), and an insulating inorganic film (220) provided on edges of the pixel region (300) along side faces of the two first banks (230) facing each other and defining the pixel regions (300).
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: March 23, 2010
    Assignee: Panasonic Corporation
    Inventors: Hidehiro Yoshida, Keisei Yamamuro
  • Publication number: 20090321725
    Abstract: An organic EL device comprising a semiconductor element A having a source electrode, a drain electrode, and a gate electrode, a semiconductor element B having a source electrode, a drain electrode, and a gate electrode connected to the source electrode or the drain electrode of the semiconductor element A, and an organic EL element having a pixel electrode connected to the drain electrode of the semiconductor element B, in which the source electrode and the drain electrode of the semiconductor element A and the gate electrode of the semiconductor element B are set on the same plane.
    Type: Application
    Filed: May 30, 2008
    Publication date: December 31, 2009
    Applicant: PANASONIC CORPORATION
    Inventors: Hidehiro Yoshida, Kiyotaka Mori, Shinya Ono, Keisei Yamamuro
  • Publication number: 20090284135
    Abstract: An organic EL display panel having a polymer organic EL layer with a uniform thickness is provided. The organic EL display panel includes a substrate, anode electrodes set on the substrate; a hole transport layer provided on the substrate on which the anode electrodes are set; banks provided in lines on the hole transport layer to define line-state pixel regions; an interlayer set in a line in the pixel region; a polymer organic EL layer set in a line on the interlayer in the pixel region; and a cathode electrode provided on the polymer organic EL layer.
    Type: Application
    Filed: May 21, 2008
    Publication date: November 19, 2009
    Applicant: PANASONIC CORPORATION
    Inventors: Hidehiro Yoshida, Yoshiro Kitamura, Keisei Yamamuro
  • Publication number: 20090284146
    Abstract: An organic EL display panel having a functional layer with a uniform film thickness is provided. The organic EL display panel of the present invention contains anode electrodes set on the substrate; organic EL layers set on the anode electrodes; line-state banks defining the organic EL layers in a line-state region; second banks defining two or more regions in the line-state region. The line-state banks and the second banks contain a fluorine resin, a fluorine concentration of the fluorine resin gradually changes along a thickness direction of each of the line-state bank and the second bank, and the fluorine concentration at a top of each of the line-state bank and the second bank is higher than the fluorine concentration at a bottom surface of each of the line-state bank and the second bank.
    Type: Application
    Filed: July 22, 2009
    Publication date: November 19, 2009
    Applicant: Panasonic Corporation
    Inventors: Hidehiro Yoshida, Yoshiro KITAMURA, Shuhei Nakatani, Hisao Nagai
  • Publication number: 20090272999
    Abstract: An organic EL display panel having a functional layer with a uniform film thickness is provided. The organic EL display panel of the present invention contains an anode electrode set on a substrate; line-state banks set on the substrate on which the anode electrode is set and defining a line-state region; a hole transport layers arranged in matrix state on the substrate, the hole transport layer being set in the line-state region; a line-state interlayer set in the line-state region; a line-state organic EL layer set in the line-state region; and a cathode electrode provided on the organic EL layer, and the bank contains a fluorine resin.
    Type: Application
    Filed: May 21, 2008
    Publication date: November 5, 2009
    Applicant: PANASONIC CORPORATION
    Inventors: Hidehiro Yoshida, Yoshiro Kitamura, Shuhei Nakatani, Hisao Nagai
  • Publication number: 20090224664
    Abstract: An organic EL display panel having a functional layer with a uniform film thickness is provided. The organic EL display panel of the present invention contains anode electrodes set on the substrate; organic EL layers set on the anode electrodes; line-state banks defining the organic EL layers in a line-state region; second banks defining two or more regions in the line-state region. The line-state banks and the second banks contain a fluorine resin, a fluorine concentration of the fluorine resin gradually changes along a thickness direction of each of the line-state bank and the second bank, and the fluorine concentration at a top of each of the line-state bank and the second bank is higher than the fluorine concentration at a bottom surface of each of the line-state bank and the second bank.
    Type: Application
    Filed: May 18, 2009
    Publication date: September 10, 2009
    Applicant: Panasonic Corporation
    Inventors: Hidehiro YOSHIDA, Yoshiro Kitamura, Shuhei Nakatani, Hisao Nagai
  • Publication number: 20090160322
    Abstract: An organic EL device that increases light emission efficiency by promoting the uniformity of light-emitting layer thickness while reducing the interval between pixel regions, and a display provided with the organic EL device. An organic EL device (10) has two or more first banks (230) extending in a line state, a plurality of second banks (240) that define pixel regions (300) by dividing a region between the adjacent first banks (230) and have a height lower than that of the first bank (230), a hole transport layer (250) provided independently for each pixel region (300), and an insulating inorganic film (220) provided on edges of the pixel region (300) along side faces of the two first banks (230) facing each other and defining the pixel regions (300).
    Type: Application
    Filed: May 21, 2008
    Publication date: June 25, 2009
    Applicant: PANASONIC CORPORATION
    Inventors: Hidehiro Yoshida, Keisei Yamamuro
  • Publication number: 20090104377
    Abstract: A method of coating by vapor deposition including heating a material-heating cell provided in a chamber and having a nozzle part at its one end, for holding a solid material, supplying a fluid from the other end side of the chamber toward the nozzle part of the chamber to guide the material vaporized from the heated material-heating cell to the nozzle part to discharge the material from the nozzle part, and blowing a gas for controlling a vapor-deposition material straight movement, outside the nozzle part of the chamber toward the tip of the nozzle part to control the material discharged from the nozzle part so that the material can move straight ahead.
    Type: Application
    Filed: August 28, 2006
    Publication date: April 23, 2009
    Inventors: Hidehiro Yoshida, Seiji Nakashima
  • Publication number: 20090058268
    Abstract: Provided is a top emission type organic EL display, more specifically, an organic EL display having a specific sealing film and improved light extracting efficiency. The organic EL display provided with a top emission type organic EL element having the sealing film including a transparent inorganic material is characterized in that the density of a transparent inorganic material for an inner layer of the sealing film is lower than the density of a transparent inorganic material for an outer layer of the sealing film. The transparent inorganic material is silicon oxide, silicon nitride, silicon oxynitride, aluminum nitride or the like. Thus, the low power consumption organic EL display is provided.
    Type: Application
    Filed: September 29, 2006
    Publication date: March 5, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Hidehiro Yoshida, Seiji Nakashima, Toshiyuki Suemitsu