Patents by Inventor Chishio Hosakawa

Chishio Hosakawa 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: 20080272690
    Abstract: An organic EL display including: a first organic EL device including a first reflective electrode (2), a second reflective electrode (5) and an organic layer (4) provided therebetween, a second organic EL device including a first reflective electrode (2), a second reflective electrode (5), a light-transmitting layer (3) and an organic layer (4), the light-transmitting layer (3) and the organic layer (4) being provided between the first and second reflective electrodes (2) and (5), and a fluorescence conversion film (7G) and (7R) converting the color of light emitted from the second organic EL device. The angular distribution of the luminance intensity of light from the second organic EL device is smaller than the angular distribution of the luminance intensity of light from the first EL device by adjusting the optical film thicknesses L1 and L2 of the first and second organic EL devices.
    Type: Application
    Filed: March 29, 2005
    Publication date: November 6, 2008
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Hitoshi Kuma, Takashi Arakane, Mitsuru Eida, Chishio Hosakawa
  • Patent number: 6107734
    Abstract: An organic EL light emitting element and a light emitting device capable of realizing inexpensively a display which a scanning line current is suppressed and which is large size and high-resolution is provided. The organic EL light emitting element 6 is constituted from a transparent electrode 2; an opposed electrode 3 arranged in a manner to oppose to this transparent electrode 2; an intermediate conductive layer 4 of "n" sheets (1.ltoreq.n.ltoreq.100); and an organic layers 5 comprising at least an organic light emitting layer, the organic light emitting layer being arranged between the transparent electrode 2 and the opposed electrode 3 in a manner to sandwich the intermediate conductive layer 4 in an intermediate position. These organic EL light emitting element 6 are arranged in one dimension or in two dimensions, whereby the light emitting device 10 is constituted.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: August 22, 2000
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Shosaku Tanaka, Chishio Hosakawa