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WHITE LIGHT LED PACKAGE STRUCTURE AND WHITE LIGHT SOURCE SYSTEM
WHITE LIGHT LED PACKAGE STRUCTURE AND WHITE LIGHT SOURCE SYSTEM
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机译：白光LED封装结构和白光源系统
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摘要
Disclosed are a white light LED package structure and a white light source system. The structure comprises: a substrate (100), an LED chip (200) and a wavelength conversion material layer (300), wherein the luminescence peak wavelength of the LED chip is between 400 nm and 425 nm; the luminescence peak wavelength of the wavelength conversion material layer is between 440 nm and 700 nm; and the wavelength conversion material layer absorbs light emitted by the LED chip and emits a white light source. Where P(λ) is the luminescence spectrum of the white light source, S(λ) is the luminescence spectrum of a blackbody radiation having the same colour temperature as the white light source, P(λmax) is the maximum light intensity in 380-780 nm, S(λmax) is the maximum light intensity of the blackbody radiation in 380-780 nm, and D(λ) is a difference value between the spectrum of a white light LED and the spectrum of the blackbody radiation in 510-610 nm, the white light source meets the following condition: D(λ) = P(λ)/P(λmax) - S(λ)/S(λmax), -0.15 D(λ) 0.15.
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