Kev Tshawb Fawb ntawm LED Dej nyab teeb: Lawv ua haujlwm li cas?
LED dej nyab teebtau dhau los ua neeg nyiam vim lawv cov kev ua tau zoo thiab kev ua neej nyob ntev. Tab sis lawv ua li cas tiag tiag? Hauv tsab xov xwm no, peb yuav tshawb fawb txog kev tshawb fawb tom qab LED dej nyab teeb thiab yuav ua li cas lawv tuaj yeem tsim lub teeb ci thiab muaj zog thaum siv ib feem ntawm lub zog uas cov teeb pom kev zoo siv.
Lub hauv paus ntsiab lus ntawm LED teeb yog hloov hluav taws xob rau hauv lub teeb los ntawm cov txheej txheem hu ua electroluminescence. Cov txheej txheem no suav nrog kev txav ntawm electrons los ntawm cov khoom siv semiconductor. Thaum cov hluav taws xob tam sim no siv rau cov khoom siv semiconductor, cov hluav taws xob ua kom zoo siab thiab dhia mus rau qib siab dua. Raws li cov hluav taws xob rov qab mus rau lawv qhov qub zog, lawv tso lub zog rau hauv daim ntawv ntawm lub teeb.
LEDs (lub teeb-emitting diodes) ua hauj lwm los ntawm kev siv ib tug me me semiconductor nti, uas yog ua los ntawm cov khoom hu ua diode. Qhov no diode yog tsim los ntawm ob txheej; Thawj txheej yog cov khoom siv hluav taws xob nplua nuj, thaum txheej thib ob yog cov khoom siv hluav taws xob tsis zoo. Thaum ib qho hluav taws xob siv rau lub diode, cov hluav taws xob txav mus los ntawm qhov thaiv ntawm ob txheej. Thaum lawv ua li ntawd, lawv tso lub zog hauv daim ntawv ntawm photons, uas yog qhov peb pom tau tias yog lub teeb.
Ib qho txiaj ntsig tseem ceeb ntawm LED dej nyab teeb yog lawv lub zog ua haujlwm. Tsis zoo li cov teeb pom kev zoo, uas ua kom muaj cua sov ntau thaum tsim lub teeb, LED dej nyab teeb tsim hluav taws xob tsawg heev. Qhov no yog vim hais tias lawv hloov yuav luag tag nrho cov hluav taws xob hluav taws xob mus rau hauv lub teeb, whereas ib txwm teeb hloov ib tug tseem ceeb npaum li cas ntawm lub zog no mus rau hauv tshav kub. Yog li ntawd, LED dej nyab teeb muaj peev xwm tsim tau ntau lub teeb ci dua nrog lub zog tsawg, ua rau lawv muaj txiaj ntsig zoo thiab ib puag ncig-phooj ywg rau lwm qhov teeb pom kev zoo.
Lwm qhov zoo ntawm LED dej nyab teeb yog lawv lub neej ntev. Cov teeb pom kev zoo yuav kub hnyiab tom qab qee lub sijhawm, yuav tsum tau hloov ntau zaus. Piv txwv li, LED dej nyab teeb tuaj yeem kav ntev txog 50, 000 teev, uas txhais tau tias lawv tsis tas yuav hloov ntau zaus. Qhov no tsis tsuas yog txuag nyiaj ntawm kev hloov pauv, tab sis kuj txo cov kev cuam tshuam ib puag ncig ntawm cov teeb pom kev zoo.
Hauv kev xaus, kev tshawb fawb tom qab LED dej nyab teeb muaj kev hloov pauv ntawm lub zog hluav taws xob rau hauv lub teeb los ntawm cov txheej txheem ntawm electroluminescence. LED dej nyab lub teeb muaj lub zog txuag hluav taws xob thiab siv tau ntev, ua rau lawv muaj kev xaiv nrov rau kev lag luam thiab thaj chaw teeb pom kev zoo. Raws li kev siv thev naus laus zis txuas ntxiv mus, nws zoo li peb yuav pom kev siv tshiab ntawm LED teeb pom kev zoo yav tom ntej.
