LEDs, los yog lub teeb-emitting diodes, tau dhau los ua neeg nyiam nyob rau hauv xyoo tas los no vim lawv lub zog ua haujlwm thiab lub neej ntev. Txawm li cas los xij, tsis yog txhua lub LEDs tau tsim sib npaug. Lawv tuaj yeem raug cais raws li ntau yam tsis muaj, suav nrog lawv txoj kev tsim kho, xim tso zis thiab daim ntawv thov.
Ib qho kev faib ua feem rau LEDs yog lawv txoj kev tsim kho. Muaj ob hom LEDs tseem ceeb: ib txwm AlGaInP thiab tshiab InGaN. Traditional AlGaInP LEDs yog tsim los ntawm cov khoom siv semiconductor uas muaj txhuas, gallium, indium, thiab phosphorous. Lawv emit liab, txiv kab ntxwv, thiab daj lub teeb thiab feem ntau siv nyob rau hauv cov lus qhia thiab cov cim. Hauv qhov sib piv, InGaN LEDs yog tsim los ntawm cov khoom siv semiconductor uas muaj indium, gallium, thiab nitrogen. Lawv emit xiav thiab ntsuab teeb thiab feem ntau yog siv nyob rau hauv lub teeb pom kev zoo thiab hluav taws xob khoom siv.
Lwm qhov tseem ceeb ntawm kev faib tawm yog cov xim tso zis ntawm LED. LEDs tuaj yeem tso cov xim sib txawv ntawm lub teeb nyob ntawm seb cov khoom siv semiconductor siv. Piv txwv li, LEDs liab yog tsim los ntawm gallium arsenide thiab emit ib lub wavelength ntawm kwv yees li 630 nanometers, thaum xiav LEDs yog tsim los ntawm gallium nitride thiab emit ib tug wavelength ntawm kwv yees li 440 nanometers. Qee cov LEDs tuaj yeem tawm ntau xim ntawm lub teeb, uas tuaj yeem ua ke los tsim ntau yam xim.
Thaum kawg, LEDs tuaj yeem raug cais raws li lawv daim ntawv thov. LEDs yog siv nyob rau hauv ntau yam kev lag luam thiab kev siv, xws li tsheb teeb pom kev zoo, kos npe, thiab backlights rau cov khoom siv hluav taws xob. Txhua daim ntawv thov yuav tsum muaj ntau hom LED nrog cov khoom tshwj xeeb xws li cov zis xim, luminosity, thiab durability.
Hauv cov ntsiab lus, muaj ntau txoj kev faib tawm rau LEDs, suav nrog txoj kev tsim kho, xim tso zis thiab daim ntawv thov. Kev nkag siab txog cov txheej txheem kev faib tawm no tuaj yeem pab cov neeg siv khoom thiab cov kws tshaj lij xaiv LED txoj cai rau lawv cov kev xav tau tshwj xeeb.
