LEDs (lub teeb-emitting diodes), tseem paub los ntawm cov lus Askiv paub ntau dua lub npe LED (cov ntawv luv rau lub teeb-emitting diode), yog cov tsis muaj suab npe tiag tiag hauv ntiaj teb ntawm electronics. Lawv ua ntau ntau yam haujlwm sib txawv thiab tam sim no siv nyob rau hauv yuav luag txhua yam khoom siv hluav taws xob. Yog li, piv txwv li, lawv tso cov cim ntawm cov teeb pom kev zoo, xa cov ntaub ntawv los ntawm cov chaw taws teeb tswj mus rau lub teeb liab txais, teeb pom kev hauv tsev, lossis qhia koj txog qhov xwm txheej tam sim no ntawm cov khoom siv. Sau ua ke, ntsuab, liab thiab xiav LEDs tuaj yeem tsim cov duab ntawm lub vijtsam TV loj lossis tswj kev khiav tsheb ntawm lub teeb tsheb.
Ci, tab sis tsis sov
Hauv paus ntsiab lus, LEDs tsuas yog lub teeb me me uas haum rau txhua qhov hluav taws xob hluav taws xob. Tab sis nyob rau tib lub sij hawm, lawv tsis muaj ib tug incandescent filament, uas yog yuav tsum tau rau cov pa roj teeb, vim hais tias lawv tsis kub li ntau. Lub teeb emissions los ntawm LEDs tsuas yog vim lub zog ntawm electrons nyob rau hauv lub semiconductor, yog li ntawd lawv muaj tib lifespan raws li ib tug pa transistor.
Thaum sib piv cov peev txheej kev noj qab haus huvLED thiab incandescent teeb, ces LED muaj ntau txhiab teev ntxiv. Cov LEDs me me tau hloov cov raj uas ci ntsa iab LCD cov ntxaij vab tshaus, ua rau lawv nyias dua.
Lub teeb txawv txawv no tuaj qhov twg?
Tsis delving rau hauv hav zoov ntawm cov txheej txheem ntawm lub cev, cia saib dab tsi ua rau LED ci.
Lub teeb yog ib daim ntawv ntawm lub zog muab tawm los ntawm lub atom, muaj ntau cov pob ntawv me me nrog lub zog thiab lub zog hu ua photons. Lawv raug tsim thaum electrons txav los ntawm qhov chaw nyob deb mus rau ib qho ze dua. Qhov ntau dua qhov kev ncua deb mus los ntawm ib qho hluav taws xob, lub zog ntau dua ntawm photon tawm los ntawm nws, uas yog tus cwj pwm los ntawm ntau zaus. Qhov ntau zaus no yog lub luag haujlwm rau lub wavelength ntawm lub teeb, uas txiav txim siab cov xim ntawm cov hluav taws xob. Piv txwv li, cov atoms nyob rau hauv tus qauv silicon diode yog teem nyob rau hauv xws li ib tug txoj kev uas ib tug electron yog tshwm sim nyob rau hauv ib tug luv luv deb. Yog li ntawd, qhov zaus ntawm photons tsawg heev uas nws pom tsis tau rau tib neeg lub qhov muag - nws yog nyob rau hauv infrared ib feem ntawm lub teeb spectrum. Tau kawg, qhov no tsis tas yuav yog qhov phem: infrared LEDs yog qhov zoo tagnrho rau cov chaw taws teeb tswj tshwj xeeb.
Liab-lit LEDs qhib ib ntu ntawm lub teeb hluav taws xob pom rau tib neeg thiab twb muaj peev xwm, piv txwv li, los qhia cov lej hauv hluav taws xob saib. Nyob ntawm cov khoom siv hauv LEDs, lawv tuaj yeem teeb tsa kom ci hauv infrared,ultraviolet thiab tag nrho cov xim ntawm cov spectrum pom ntawm lawv.
Ob lub hauv siab, zoo ib yam ntawm lub ntsej muag
Tsis ntev tom qab kev txhim kho ntawm LED liab, LEDs ntawm lwm cov xim tshwm sim. Yuav luag tam sim ntawd lawv pib ua ke, muab tso rau hauv ib lub plhaub. Ob-xim LED yog ib qho khoom siv nrog ob txoj hauv kev, qhov twg ob qho tib si taw qhia diodes ntawm cov xim sib txawv ntawm cov hluav taws xob sib txawv tau teeb tsa nyob rau hauv ib lub tsev. Hauv qhov no, cov xim yuav nyob ntawm qhov polarity ntawm qhov hluav taws xob muab rau lub cuab yeej.
Liab-ntsuab LEDs tau dav siv los ua qhov taw qhia ntawm kev npaj khoom siv rau kev ua haujlwm (liab rau - tawm, ntsuab - rau).
Tsis muaj qhov zoo tshaj plaws hauv ntiaj teb, lossis Ob peb qhov tsis txaus ntawm lub teeb pom kev zoo
Pom tseeb, LED thev naus laus zis tseem tsis zoo. Ib qho tsis zoo yog lawv qhov tsis zoo rau qhov kub thiab txias. Ntau dhau tam sim no thiab qhov tshwm sim overheating ntawm LED Circuit Court ua rau hlawv mus tas li, feem ntau hu ua LED melting. Tsis tas li ntawd, LEDs raws li cov khoom siv semiconductor siab heev tau, txog thaum tsis ntev los no, kim heev los siv los ua lub teeb pom kev zoo. Tab sis txij li xyoo 2000, nrog rau kev tsim khoom loj, tus nqi ntawm LEDs tau poob ob peb zaug thiab tau ua kom zoo nrog tus nqi ntawm cov teeb pom kev zoo, thiab muab lub neej ntev, lub teeb ci, ib puag ncig tus phooj ywg thiab lub zog ua haujlwm zoo, kev siv lub neej ntev. LEDs tau dhau los ua kev xaiv teeb pom kev zoo dua rautom tsev.
Lub Teeb Liab Zoo thiab txaus ntshai
Cia peb nyob hauv kev nthuav dav ntxiv ntawm qhov twg LED liab siv. Nws tuaj yeem raug suav hais tias yog "tus tij laug loj" hauv tsev neeg LED, yog tias tsuas yog vim nws yog thawj LED kev ua haujlwm hauv qhov pom hluav taws xob pom. Lawm, lawv tau pib siv nws rau cov kev xav tau ua ntej tshaj li lwm tus thiab, ua ntej ntawm tag nrho cov, kom nyiam cov kev tshwm sim ntawm cov khoom malfunction. Pom zoo, thaum es tsis txhob ntawm lub cev tsis sib xws ntawm lub cav, lub teeb liab LED blinks rhythmically, highlighting ib los yog lwm lub cim ntawm lub vaj huam sib luag ntawm koj lub tsheb nyiam lossis lub tshuab ntxhua khaub ncaws, ces tsawg kawg qhov no ua rau muaj kev ntxhov siab me ntsis. Yog lawm, nws yog rau ceeb toom txog qhov xwm txheej ceev uas qhov ntsuas no feem ntau siv.
Tsis Paub Liab
Liab xim muaj qhov ntev tshaj plaws wavelength thiab yog qhov tsawg tshaj plaws rau kev tawg, raws li, nws pom los ntawm qhov deb tshaj plaws. Yog li ntawd, nws tsis yog qhov xav tsis thoob tias lub flashing liab LED yog dav siv rau thaum muaj xwm ceev thiab tswb teeb. Ntxiv mus, theem ntawm kev siv hluav taws xob ntawm LEDs ntawm cov xim no yog qhov tsawg tshaj plaws ntawm tag nrho lwm cov LEDs hauv qhov pom kev, uas ua kom lub sijhawm ua haujlwm siab tshaj plaws ntawm cov khoom siv teeb pom kev zoo.
Red LED teeb feem ntau yog siv qhov twg xav tau lub teeb ci siab, thaum tsis cuam tshuam lwm tus neeg. Piv txwv li, lawv nyiam ua yeeb yam hauv tsev ua yeeb yam, xinesmas thiab nyeem ntawv astronomical maps. Lub teeb liab tsis yogstrain lub qhov muag, pab txhawb kev nthuav dav ntawm cov menyuam kawm ntawv zoo dua, thiab tso cai rau koj kom pom cov khoom cuam tshuam zoo kawg nkaus.
Thiab LED-technologies tau pom daim ntawv thov tsim nyog rau cov neeg ua teb. Lub teeb xiav txhawb kev loj hlob ntawm cov nroj tsuag, thaum siv cov LEDs liab txhim kho paj thiab txiv hmab txiv ntoo. Ntawm no, LEDs yog dhau kev sib tw, vim hais tias, emitting ib tug loj npaum li cas ntawm lub teeb, lawv tsis overheat thiab tsis qhuav huab cua, tsis zoo li lwm yam teeb uas yuav ua phem rau cov qoob loo yav tom ntej.
Ntxiv, qhov ntau "zoo heev"
Hloov cov qhov muag teev qub nrog LEDs tsuas yog qhov kawg ntawm cov dej khov nab kuab, cov dab neeg ntawm LED tsuas yog pib. Ua tsaug rau cov kev tsim kho tshiab, cov kev daws teeb meem LED tau nce mus txog lub qab ntug tshiab uas yav tas los siv tsis tau rau lawv. Txoj kev loj hlob zoo tshaj plaws yog cov organic teeb-emitting diodes, lossis OLEDs.
Cov khoom siv organic siv los ua cov khoom siv hluav taws xob no tuaj yeem ua tau yooj yim, tso cai rau lub teeb hloov tau yooj yim thiab txawm tias cov khoom tsim los ua hnub no. Nws zoo li OLED thev naus laus zis yuav ua rau txoj hauv kev rau tiam tom ntej ntawm TVs thiab smartphones. Tom qab tag nrho, nws yog qhov yooj yim heev kom tshem koj lub TV ntawm phab ntsa, yob nws mus rau hauv lub raj thiab coj nws nrog koj, piv txwv li, mus rau lub teb chaws tsev.
Nws nyuaj los hais qhov twg LED thev naus laus zis yuav mus rau yav tom ntej, tab sis ib qho tseeb - yuav tsis rov qab los rau Edison lub teeb.
