LED yog dab tsi
Thaum koj mus yuav cov khoom siv hluav taws xob, ib qho ntawm cov ntsiab lus nquag tshaj plaws uas koj yuav ntsib yog LED. Tag nrho cov khoom siv LED muaj xws li koj lub xov tooj ntse, lub laptop lossis lub khoos phis tawj desktop, lub teeb hauv tsev, thiab cov teeb pom kev zoo nkauj. Peb mam li sim piav qhia seb LED yog dab tsi, nws ua haujlwm li cas, thiab qee qhov ntawm nws cov ntawv thov hauv tsab ntawv no.
Specification ntawm LED
'Lub teeb emitting diode' yog qhov pib LED sawv rau. Ib qho hluav taws xob tam sim no tsuas yog ntws hauv ib txoj hauv kev los ntawm diode, uas yog cov khoom siv hluav taws xob semiconductor muaj ob lub terminals. Lub teeb pom kev yog tsim thaum muaj hluav taws xob tam sim no ntws los ntawm lub diode.
Led qauv
Cov laus LEDs tsuas yog ua los ntawm ob peb xim, feem ntau liab lossis ntsuab, thiab tau tsim los ntawm cov khoom siv semiconductor xws li gallium arsenide. Niaj hnub nimno LEDs muaj peev xwm tsim lub teeb nyob rau hauv tej xim thiab yog tsim los ntawm cov khoom siv hluavtaws xws li p-phenylenevinyl. P-hom thiab N-hom semiconductors yog ob hom kev ua cov ntaub ntawv uas ua rau LED. PN kev sib tshuam yog ib cheeb tsam tsim los ntawm kev sib cuag ncaj qha ntawm ob lub ntsiab lus. PN junction daim ntawv thov no txiav txim siab nws cov duab. Qhov kev sib tshuam PN no muaj lub hnab ntawv translucent uas cia lub teeb lub zog dhau mus.
Yuav ua li cas LEDs ua haujlwm
Atoms nyob rau hauv thawj cov ntaub ntawv nyob rau hauv lub semiconductor nti ua zoo siab mus rau ib tug ntau dua degree ntawm lub zog uas yuav tsum tau tso tawm thaum hluav taws xob xa mus los ntawm lub diode. Lub zog yog tso tawm nyob rau hauv daim ntawv ntawm photons, uas peb perceive li lub teeb, raws li lub atoms hloov lawv cov electrons mus rau lwm yam Cheebtsam ntawm lub nti. Electroluminescence yog lub npe ntawm qhov tshwm sim no.
Cov txiaj ntsig ntawm LED
Muab hais tias lawv siv tsis tshua muaj hluav taws xob thiab tam sim no dua li cov qij fluorescent ntawm qhov ci sib npaug, LEDs yog lub zog txuag. Lawv kuj tuaj yeem muab khi ua ke vim tias lawv yog cov compact thiab tsim ntau qhov ci thiab luminosity. Kev hloov pauv sai dua yog ua tau nrog LEDs, uas kuj yooj yim rau kev tswj thiab teeb tsa. LEDs muaj lub neej ntev thiab, thaum muab tso rau kom raug, tuaj yeem nyob tau ntau xyoo. Vim yog lawv cov resilience rau kev co thiab kev ntxhov siab, lawv zoo kawg nkaus ua tau zoo thiab vam khom. Txij li thaum lawv tsis tawm cua sov lossis UV rays, LEDs muaj kev nyab xeeb.
Kev siv LED
Kev siv sib txawv rau LEDs yog ua tau. Qhov taw qhia teeb, LCD vaj huam sib luag backlighting, fiber ntau optic cov ntaub ntawv kis tau tus mob, kev tswj chaw taws teeb, kev teeb pom kev dav dav, teeb pom kev tsheb, lub koob yees duab flashes, cov paib tshaj tawm thiab optoisolators tsuas yog qee qhov piv txwv ntawm kev siv ntau. Tsis tas li ntawd, lawv tau ua haujlwm hauv kev siv tshuab sensor, kev sib txuas lus thev naus laus zis, thiab aviation teeb pom kev zoo.
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