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    • 10. 发明授权
    • Light emitting device having plural light emitting diodes and at least one phosphor for emitting different wavelengths of light
    • 具有多个发光二极管和至少一个用于发射不同波长的光的荧光体的发光器件
    • US08188492B2
    • 2012-05-29
    • US12439052
    • 2007-08-24
    • Sang Min LeeHyuck Jung ChoiMi Hae Kim
    • Sang Min LeeHyuck Jung ChoiMi Hae Kim
    • H01L33/50
    • H01L25/0753C09K11/7734C09K11/7792H01L33/50H01L2224/48Y02B20/181
    • The present invention provides a light emitting device, comprising a first light emitting diode for emitting light in an ultraviolet wavelength region; at least one phosphor arranged around the first light emitting diode and excited by the light emitted from the first light emitting diode to emit light having a peak wavelength longer than the wavelength of the light emitted from the first light emitting diode; and at least one second light emitting diode for emitting light having a wavelength different from the peak wavelength of the light emitted from the phosphor. According to the present invention, there is provided a white light emitting device, wherein using a light emitting diode for emitting light different in wavelength from light that is ex-cititively emitted from the phosphor, an excitation light source, i.e., light in the ultraviolet region for exciting the phosphor is effectively used, thereby improving energy conversion efficiency and improving reliability.
    • 本发明提供了一种发光器件,包括用于发射紫外线波长区域的光的第一发光二极管; 至少一个磷光体布置在第一发光二极管周围并被从第一发光二极管发射的光激发,以发射具有比从第一发光二极管发射的光的波长更长的峰值波长的光; 以及至少一个第二发光二极管,用于发射波长不同于从荧光体发出的光的峰值波长的波长的光。 根据本发明,提供了一种白光发光装置,其中使用发光二极管发射波长不同于从荧光体中突出出射的光的光,激发光源,即紫外线中的光 有效地利用激发荧光体的区域,从而提高能量转换效率并提高可靠性。