WHITE LIGHT EMITTING DEVICE

A white light emitting device includes an LED chip capable of emitting light with a peak wavelength of 390 to 430 nm, and a wavelength conversion layer including first, second and third fluorescent materials. The first fluorescent material is capable of being excited to emit light with a peak wavele...

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Bibliographische Detailangaben
Hauptverfasser: HSU SHIHANG, CHEN YI-HSUAN
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A white light emitting device includes an LED chip capable of emitting light with a peak wavelength of 390 to 430 nm, and a wavelength conversion layer including first, second and third fluorescent materials. The first fluorescent material is capable of being excited to emit light with a peak wavelength of 450 to 470 nm. The second fluorescent material is capable of being excited to emit light with a peak wavelength of 450 to 470 nm. The third fluorescent material is capable of being excited to emit light with a peak wavelength of 630 to 650 nm. Light emitted by the white light emitting device has a color temperature below 5000 K, and a general color rendering index value (Ra) and special color rendering index values (R9-R15) all greater than 90.