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    • 3. 发明申请
    • LIGHT EMITTING DEVICE
    • 发光装置
    • US20120228653A1
    • 2012-09-13
    • US13215659
    • 2011-08-23
    • Kunio ISHIDAIwao MitsuishiShinya Nunoue
    • Kunio ISHIDAIwao MitsuishiShinya Nunoue
    • H01L33/50
    • H01L33/504C09K11/0883C09K11/7734H01L33/44H01L2224/16225H01L2933/0041H01L2933/0083
    • A light emitting device of embodiments is provided with a light-emitting element emitting excitation light of a first wavelength, a first phosphor layer containing a first phosphor that converts the excitation light into first converted light of a second wavelength longer than the first wavelength, a second phosphor layer provided between the light-emitting element and the first phosphor layer, receiving the excitation light, and containing a second phosphor that converts the excitation light into second converted light of a third wavelength longer than the second wavelength, and a filter layer provided between the first phosphor layer and the second phosphor layer and constituted of a two-dimensional photonic crystal or a three-dimensional photonic crystal that transmits the excitation light and the second converted light and reflects the first converted light.
    • 实施例的发光器件设置有发射第一波长的激发光的发光元件,包含将激发光转换成长于第一波长的第二波长的第一转换光的第一荧光体的第一荧光体层, 第二荧光体层,设置在发光元件和第一荧光体层之间,接收激发光,并且包含将激发光转换成比第二波长长的第三波长的第二转换光的第二荧光体,设置有滤光层 在第一荧光体层和第二荧光体层之间,由透射激发光和第二转换光并反射第一转换光的二维光子晶体或三维光子晶体构成。