A white light LED mixed light method and the light-emitting device made therefrom
A LED chip, white light technology, applied in semiconductor devices, electrical components, circuits, etc., can solve the problems of low special color rendering index R9 and R12, and achieve the effect of good color temperature uniformity, easy quality control, and large color temperature variation range.
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Embodiment 1
[0051] Such as figure 1 As shown, the package device of this embodiment includes an LED chip 1 , two electrodes 2 and a package substrate 3 , and the two electrodes are respectively located at both ends of the package substrate 3 for leading out the positive and negative electrodes of the LED chip 1 .
[0052] In this embodiment, one of the InGaN or GaN series blue-light semiconductor chips whose luminous peak wavelength is between 450nm and 470nm is selected, and the power is about 0.5W.
[0053] The phosphor used in this embodiment:
[0054] The composition formula of red phosphor is: CaAlSi(ON) 3 : Eu, the peak wavelength of the emission spectrum is 640-660nm, and the half-maximum width is 80-120nm;
[0055] The composition formula of green phosphor powder is: Lu 3 al 5 o 12 : Eu, the peak wavelength of the emission spectrum is 515-530nm, and the half-maximum width is 90-120nm;
[0056] The composition formula of orange phosphor is: CaAlSi(ON) 3 : Eu, the peak wavele...
Embodiment 2
[0068] The white light emitting device of this embodiment includes a substrate with a printed circuit, an LED chip, an LED phosphor, and an LED encapsulation glue.
[0069] In this embodiment, one of the InGaN or GaN series blue-light semiconductor chips whose luminous peak wavelength is between 450nm and 470nm is selected, and the input power of a single chip can reach up to 18W.
[0070] The phosphor used in this embodiment:
[0071] The composition formula of red phosphor is: CaAlSi(ON) 3 : Eu, the peak wavelength of the emission spectrum is 640-660nm, and the half-maximum width is 80-120nm;
[0072] The composition formula of green phosphor powder is: Lu 3 al 5 o 12 : Eu, the peak wavelength of the emission spectrum is 515-530nm, and the half-maximum width is 90-120nm;
[0073] The composition formula of orange phosphor is: CaAlSi(ON) 3 : Eu, the peak wavelength of the emission spectrum is 605-620nm, and the half-maximum width is 65-80nm;
[0074] First, solder seve...
Embodiment 3
[0082] The white light emitting device of this embodiment is the same as the light emitting device shown in Example 1.
[0083] In this embodiment, one of InGaN or GaN series semiconductor chips with a luminous peak wavelength of 380nm-420nm is selected, and the power is about 0.5W.
[0084] The phosphor used in this embodiment:
[0085] The composition formula of red phosphor is: CaAlSi(ON) 3 : Eu, the peak wavelength of the emission spectrum is 640-660nm, and the half-maximum width is 80-120nm;
[0086] The composition formula of the green phosphor is: SiAlON:Eu, the peak wavelength of the emission spectrum is 525-550nm, and the half-peak width is 40-60nm;
[0087] The composition formula of orange phosphor is: CaAlSi(ON) 3 : Eu, the peak wavelength of the emission spectrum is 605-620nm, and the half-maximum width is 65-80nm;
[0088] The emission spectra of the four color packages are as Figure 7 shown.
[0089] By adjusting the current output ratio of the four drivi...
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