dawb LED teeb pom kev zoo txoj cai
Dawb LEDs yog tib txoj hauv kev kom ua tiav semiconductor teeb pom kev zoo. Lub teeb dawb LED tsis yog lub teeb monochromatic, thiab tsis muaj lub teeb dawb nyob rau hauv lub spectrum ntawm pom lub teeb. Raws li tib neeg txoj kev tshawb fawb txog lub teeb pom kev, lub teeb dawb uas pom tau los ntawm tib neeg lub qhov muag tuaj yeem tsim los ntawm kev sib xyaw ob lossis ntau hom teeb. Tam sim no muaj peb txoj hauv kev kom tau txais cov khoom siv hluav taws xob dawb LED.
(1)Blue LED + txawv xim phosphors:
Dawb LED tsim yog daj phosphor coated los ntawm xiav LEDs. Lub teeb daj tsim los ntawm phosphor zoo siab thiab lub teeb xiav thaum chiv thawj zoo siab heev. Complementary thiab tsim lub teeb dawb. Nws tseem ua tau kom tau txais lub teeb dawb los ntawm kev sib txuas lub teeb ntsuab thiab lub teeb liab tawm los ntawm xiav LED nti nrog cov phosphor, thiab cov khoom siv xim rendering yog qhov zoo, tab sis cov phosphor conversion efficiency siv nyob rau hauv cov qauv no yog tsawg, tshwj xeeb tshaj yog cov liab. phosphor.
Tam sim no, dawb LED ntim tshuab siv xiav LED nrog daj phosphor yog qhov paub tab, tab sis qhov teeb meem ntawm kev sib xws, xim kub thiab xim tsis zoo rendering Performance index tsis tuaj yeem daws tau.
(2)Ultraviolet lossis violet LED + RGB phosphor:
Lub hauv paus ntsiab lus ntawm synthesizing lub teeb dawb nrog ultraviolet los yog violet (300-400nm) LED thiab RGB phosphor yog zoo ib yam li cov teeb fluorescent, tab sis superior rau fluorescent teeb kev ua tau zoo, ntshav LED hloov pauv coefficient tuaj yeem ncav cuag 0.8, thiab quantum conversion efficiency ntawm txhua. xim phosphor tuaj yeem ncav cuag 0.9.
Txoj kev siv violet LED kom ua rau peb lub hom phiaj tseem ceeb lossis ntau xim phosphors los tsim lub teeb ntau xim thiab tom qab ntawd sib xyaw rau hauv lub teeb dawb muaj xim zoo dua, tab sis kuj tseem muaj teeb meem. Liab phosphor thiab ntsuab phosphor feem ntau yog sulfides, thiab lub teeb emission stability tsis zoo. Lub teeb lwj yog loj.
(3)RGB peb thawj xim LEDs tsim lub teeb dawb:
Txoj kev no muab peb hom LED chips ntsuab, liab thiab xiav, thiab ib txhij energizes, thiab ces sib tov lub emission ntsuab teeb, liab thiab xiav lub teeb rau hauv lub teeb dawb raws li ib tug piv txwv. Qhov piv ntawm ntsuab, liab, thiab xiav feem ntau yog 6: 3: 1. Cov txheej txheem ntawm kev ntim khoom ncaj qha RG.B peb thawj xim LEDs rau hauv cov LEDs dawb muaj qhov ua tau zoo tshaj plaws ntawm lub teeb dawb, thiab lub teeb dawb lumen efficiency kuj siab nyob rau hauv qhov chaw ntawm cov xim siab rendering Performance index.
Vim qhov sib txawv xim kub thiab xim rendering Performance index yuav tsum tau rau lub synthesis ntawm lub teeb dawb, lub lumen efficiency yuav tsum tau rau cov LEDs ntawm lub composite dawb lub teeb kuj txawv. Txawm li cas los xij, qhov teeb meem tseem ceeb ntawm txoj kev no yog txhawm rau txhim kho qhov kev hloov pauv ntawm electro-optical efficiency ntawm ntsuab LEDs thiab txo cov nqi.