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    • 55. 发明申请
    • Light emitting device
    • 发光装置
    • US20080128732A1
    • 2008-06-05
    • US11976614
    • 2007-10-25
    • Takao HarunaAkio NamikiMitsuhiro Inoue
    • Takao HarunaAkio NamikiMitsuhiro Inoue
    • H01L33/00
    • H01L33/508H01L33/44H01L33/501H01L2224/05124H01L2224/05568H01L2224/05573H01L2224/0558H01L2224/05624H01L2224/05644H01L2224/16H01L2924/00014
    • A light emitting device has a light emitting element, and a high-refractive index layer that contacts an emission surface of the light emitting element. The high-refractive index layer has transparent fine particles uniformly arranged along the emission surface. The fine particles has a refractive index high than that of a material composing the emission surface of the light emitting element. Otherwise, a light emitting device has a light emitting element, a sealing material for sealing the light emitting element, and a high-refractive index layer that contacts an emission surface of the light emitting element. The fine particles has a refractive index high than that of a material composing the emission surface of the light emitting element and that of the sealing material. A phosphor may be included in the sealing material which is adapted to emit a wavelength-converted light by being excited by a light emitted from the light emitting element. The phosphor may have a same matrix as the fine particles, and it may be formed spherical. The light emitting element may be a face-up type light emitting element or a flip-chip type light emitting element.
    • 发光器件具有发光元件和与发光元件的发射表面接触的高折射率层。 高折射率层具有沿着发射表面均匀排列的透明微粒。 该微粒的折射率高于构成发光元件的发射面的材料的折射率。 否则,发光装置具有发光元件,用于密封发光元件的密封材料和与发光元件的发射表面接触的高折射率层。 细颗粒的折射率高于构成发光元件的发射表面和密封材料的发射表面的材料的折射率。 在密封材料中可以包括磷光体,该磷光体适于通过由发光元件发射的光而激发波长转换的光。 磷光体可以具有与微粒相同的基体,并且其可以形成为球形。 发光元件可以是面朝上型发光元件或倒装芯片型发光元件。