Patents by Inventor Yoshiro Oshima

Yoshiro Oshima 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).

  • Light emitting device, display device, and color conversion sheet
    Patent number: 8514350
    Abstract: There is provided is a display device capable of suppressing deterioration of the color conversion layer which converts one color light into another color light, and realizing favorable handling and a display device using the color conversion layer, and a color conversion sheet. A phosphor sheet 10 is, for example, arranged immediately above a light source such as a blue light emitting diode, and obtained by sealing a phosphor layer 11, which converts a part of blue light into another color light, by sealing sheets 12A and 12B. The sealing sheets 12A and 12B are bonded with the phosphor layer 11 in between by a first bonding layer 13 and a second bonding layer 14. Since the phosphor layer 11 is sealed by the sealing sheets 12A and 12B including a water vapor barrier layer 122 held between resin sheets 121A and 121B, water vapor is prevented from entering into the phosphor layer, and a chemical reaction is less likely to be generated between the phosphor layer 11 and the water vapor barrier layer 122.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: August 20, 2013
    Assignee: Sony Corporation
    Inventors: Tsubasa Tsukahara, Yasushi Ito, Naoji Nada, Yoshiro Oshima, Hideya Chubachi
  • LIGHT EMITTING DEVICE, DISPLAY DEVICE, AND COLOR CONVERSION SHEET
    Publication number: 20110037926
    Abstract: There is provided is a display device capable of suppressing deterioration of the color conversion layer which converts one color light into another color light, and realizing favorable handling and a display device using the color conversion layer, and a color conversion sheet. A phosphor sheet 10 is, for example, arranged immediately above a light source such as a blue light emitting diode, and obtained by sealing a phosphor layer 11, which converts a part of blue light into another color light, by sealing sheets 12A and 12B. The sealing sheets 12A and 12B are bonded with the phosphor layer 11 in between by a first bonding layer 13 and a second bonding layer 14. Since the phosphor layer 11 is sealed by the sealing sheets 12A and 12B including a water vapor barrier layer 122 held between resin sheets 121A and 121B, water vapor is prevented from entering into the phosphor layer, and a chemical reaction is less likely to be generated between the phosphor layer 11 and the water vapor barrier layer 122.
    Type: Application
    Filed: April 20, 2009
    Publication date: February 17, 2011
    Applicant: SONY CORPORATION
    Inventors: Tsubasa Tsukahara, Yasushi Ito, Naoji Nada, Yoshiro Oshima, Hideya Chubachi