Lub hauv paus ntsiab lus ntawm semiconductor LED yuav tsum nkag siab

Lub teeb-emitting diode Inumgarnet (CE3: yag) siv lead ua yog grinded rau hauv hmoov thiab tov nrog nws nyob rau hauv ib tug ntom nplaum. Thaum LED nti tawm lub teeb xiav, qee qhov Blu-duab tshav yuav hloov pauv los ntawm cov siv lead ua no nrog ntau yam spectrals (txog 580nm hauv nruab nrab ntawm spectrum). (Qhov tseeb, YAG ntawm ib leeg siv lead ua sib xyaw CE suav tias yog flicker dua li cov phosphorus.) Vim tias lub teeb daj yuav txhawb nqa cov xim liab thiab ntsuab receptors hauv qhov muag liab qab, lub teeb xiav ntawm LED nws tus kheej ua rau nws zoo li lub teeb dawb. Thiab nws cov xim feem ntau hu ua “Lub hli dawb ”. Txoj kev no ua lub teeb dawb LED yog tsim los ntawm Nichiacorporation thiab pib tsim lub teeb dawb LED hauv xyoo 1996. Yog koj xav hloov lub lawd, koj yuav siv nrhiav phau los lossis los nrhiav phau (CE) uas nyob hauv CE3: yag, Qhov tseem hloov tej tswv lossis lub aluminium hauv YAG. Raws li cov yam ntxwv ntawm nws cov spectrum, cov khoom liab thiab ntsuab zoo li tsawg dua li ntawm qhov dav-spectrum lub teeb ci nyob rau hauv qhov raug LED no. Tsis tas li ntawd, vim qhov kev hloov pauv ntawm cov khoom tsim, cov xim kub ntawm cov khoom tiav no tsis zoo ib yam, los ntawm sov daj mus rau txias xiav. Yog li ntawd, nyob rau hauv cov txheej txheem ntau lawm. Lwm txoj kev dawb - teeb LED yog me ntsis zoo li lub teeb fluorescent. Lub LED uas tawm ze li ntawm lub teeb ultraviolet yuav raug pleev xim nrog ob qhov sib xyaw phosphorus, ib qho yog lub teeb liab thiab xiav, thiab lwm qhov yog lub teeb ntsuab. Tooj liab thiab txhuas nrog zinc sulfide (ZNS). Txawm li cas los xij, vim tias cov kab hluav taws xob ultraviolet tuaj yeem ua rau epoxy resin tawg thiab deterioration hauv cov nplaum, ntau lawm yog qhov nyuaj dua thiab lub neej expectancy luv luv. Piv nrog rau thawj txoj kev, nws muaj kev ua haujlwm tsawg thiab ua kom muaj cua sov ntau dua (vim lub qub STOKESSHIFT muaj qhov qub qub), tab sis qhov zoo dua yog tias cov yam ntxwv ntawm cov spectrum zoo dua. Vim tias lub zog LED ntawm UV lub teeb yog siab, txawm hais tias qhov ua tau zoo yog qhov qis, qhov ci ntsa iab tawm zoo ib yam. Txoj kev tshiab tshaj plaws rau kev ua lub teeb dawb LED tsis siv lub teeb phosphorus ntxiv lawm. Txoj hauv kev tshiab yog kom loj hlob zinc hauv zinc -zinc (ZNSE) substrate. Thaum nws yog powered on, nws lub active cheeb tsam yuav emit xiav lub teeb thiab lub substrate yuav tig daj, thiab nws yuav dawb lub teeb los sib tov.