Tib neeg tau nkag siab txog cov kev paub yooj yim uas cov khoom siv semiconductor tuaj yeem tsim teeb pom kev 50 xyoo dhau los.Nyob rau hauv 1962, Nick Holonyak Jr. ntawm General Electric Company tau tsim thawj daim ntawv thov ntawm pom lub teeb emitting diodes.
LED yog lub ntsiab lus ntawm lus Askiv lub teeb emitting diode, nws cov qauv yooj yim yog ib qho ntawm cov khoom siv electroluminescent semiconductor, muab tso rau ntawm lub txee coj, thiab tom qab ntawd muab khi nrog epoxy resin ncig, uas yog, cov khoom encapsulation, yog li nws tuaj yeem tiv thaiv cov tub ntxhais hlau sab hauv, yog li LED muaj kev ua haujlwm zoo seismic.
AIOT cov ntaub ntawv loj ntseeg tias thawj zaug LEDs tau siv los ua qhov taw qhia lub teeb rau cov ntsuas thiab ntsuas, thiab tom qab ntawd LEDs ntawm ntau lub teeb xim tau siv dav hauv cov teeb liab teeb liab thiab cov ntxaij vab tshaus loj, uas ua rau muaj txiaj ntsig zoo ntawm kev lag luam thiab kev sib raug zoo.Siv lub teeb liab 12-nti ua piv txwv.Hauv Tebchaws Meskas, lub neej ntev, kev ua haujlwm qis 140-watt incandescent teeb yog thawj zaug siv los ua lub teeb ci, uas ua rau 2000 lumens ntawm lub teeb dawb.Tom qab dhau los ntawm cov lim liab, lub teeb poob yog 90%, tawm tsuas yog 200 lumens ntawm lub teeb liab.Nyob rau hauv lub teeb tsim tshiab, lub tuam txhab siv 18 liab LED teeb qhov chaw, nrog rau kev poob hauv Circuit Court, tag nrho ntawm 14 watts ntawm lub zog siv, tuaj yeem tsim cov nyhuv tib yam.Automotive teeb liab teeb kuj yog ib qho tseem ceeb ntawm kev siv lub teeb ci LED.
Txoj cai ntawm LED
LED (Lub Teeb Emitting Diode), yog cov khoom siv hluav taws xob semiconductor uas tuaj yeem hloov hluav taws xob ncaj qha rau hauv lub teeb.Lub plawv ntawm LED yog semiconductor nti, ib qho kawg ntawm nti yog txuas nrog kev txhawb nqa, ib qho kawg yog tus ncej tsis zoo, thiab lwm qhov kawg yog txuas nrog tus ncej zoo ntawm lub hwj chim, kom tag nrho cov nti yog encapsulated. los ntawm epoxy resin.Lub semiconductor wafer yog tsim los ntawm ob qhov chaw, ib feem yog P-hom semiconductor, nyob rau hauv uas lub qhov dominate, thiab lwm kawg yog N-hom semiconductor, uas yog feem ntau electrons.
Tab sis thaum ob lub semiconductors txuas nrog, "PN junction" yog tsim los ntawm lawv.Thaum qhov tam sim no ua rau lub nti los ntawm cov hlau, cov electrons yuav raug thawb mus rau thaj tsam P, qhov twg cov electrons thiab qhov sib txuas, thiab tom qab ntawd tawm lub zog hauv daim ntawv ntawm photons.Qhov no yog lub hauv paus ntsiab lus ntawm LED teeb emission.Lub wavelength ntawm lub teeb kuj yog xim ntawm lub teeb, uas yog txiav txim los ntawm cov khoom tsim "PN junction".
Post lub sij hawm: Aug-27-2021