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    • 2. 发明申请
    • LIGHT EMTTING DEVICE
    • 发光装置
    • US20110248296A1
    • 2011-10-13
    • US13164379
    • 2011-06-20
    • Hyuck Jung CHOIKwang Il PARK
    • Hyuck Jung CHOIKwang Il PARK
    • H01L33/08H01L33/50
    • H01L33/504H01L33/44H01L33/46H01L2224/48091H01L2224/48227H01L2924/00014
    • Disclosed herein is a light emitting device. The light emitting device includes a light emitting diode disposed on a substrate to emit light of a first wavelength. A transparent molding part encloses the LED, a lower wavelength conversion material layer is disposed on the transparent molding part, and an upper wavelength conversion material layer is disposed on the lower wavelength conversion material layer. The lower wavelength conversion material layer contains a phosphor converting the light of the first wavelength into light of a second wavelength longer than the first wavelength, and the upper wavelength conversion material layer contains a phosphor converting the light of the first wavelength into light of a third wavelength, which is longer than the first wavelength but shorter than the second wavelength. Light produced via wavelength conversion is prevented from being lost by the phosphor. Light emitting devices including a multilayer reflection minor are also disclosed.
    • 本文公开了一种发光器件。 发光装置包括设置在基板上以发射第一波长的光的发光二极管。 透明成型部包围LED,在透明成型部上配置低波长转换材料层,在波长较低的转换材料层上设置上波长转换材料层。 低波长转换材料层含有将第一波长的光转换成比第一波长长的第二波长的光的荧光体,并且上波长转换材料层含有将第一波长的光转换成第三波长的光的荧光体 波长比第一波长长但比第二波长短。 防止由波长转换产生的光被荧光体损失。 还公开了包括多层反射次要的发光器件。