SMD LED txhais tau hais tias nto saum npoo lub teeb emitting diode, SMD nti pab txhim kho kev ua hauj lwm zoo, nrog rau kev thov hauv cov chaw sib txawv. Nws yog qhov cuab yeej hluav taws xob-semiconductor uas tuaj yeem hloov hluav taws xob ncaj qha rau lub teeb. Nws qhov voltage yog 1.9-3.2V, lub teeb liab thiab daj lub teeb hluav taws xob yog qhov qis tshaj. Lub plawv ntawm LED yog lub semiconductor nti. Ib qho kawg ntawm cov nti tau txuas nrog lub cim caj dab, ib kawg yog qhov tsis zoo, thiab lwm qhov kawg tau txuas nrog tus ncej zoo ntawm lub zog fais fab, kom txhua tus nti ua tiav nrog epoxy cob. Lub semiconductor wafer yog tsim los ntawm ob ntu, ib qho yog P-hom semiconductor, nyob rau hauv uas cov qhov muaj yeej, thiab lwm qhov kawg yog N-hom semiconductor, uas yog cov khoom siv hluav taws xob feem ntau. Tab sis thaum ob lub xov tooj cua sib txuas no sib txuas, PN kev sib tshuam raug tsim los ntawm lawv. Thaum tam sim no ua nyob rau ntawm lub nti los ntawm xaim, cov xaim hluav taws xob yuav raug thawb mus rau thaj chaw P, qhov twg cov xaim hluav taws xob thiab qhov tso pa tawm, thiab tom qab ntawd tawm lub zog hauv daim ntawv ntawm photons. Qhov no yog lub hauv paus ntawm LED teeb ua pa tawm. Lub nthwv dej ntawm lub teeb kuj yog xim ntawm lub teeb, uas txiav txim siab los ntawm cov khoom sib sau ua ke PN kev sib tshuam.
LED lus Askiv yog (lub teeb hluav taws xob emode), LED teeb hlaws yog cov tsiaj ntawv luv rau LED rau lub teeb hluav taws xob, uas yog lub npe nrov.
Cov yam ntxwv ntawm LED teeb hlaws:
1. Qhov hluav taws xob: LED teeb hlaws hluav taws xob siv hluav taws xob muaj hluav taws xob tsawg, lub zog hluav taws xob muaj hluav taws xob nyob nruab nrab ntawm 2-4V, nyob ntawm cov khoom lag luam, yog li nws muaj kev ruaj ntseg fais fab mov dua li siv hluav taws xob ntau hluav taws xob, tshwj xeeb tshaj yog haum rau pej xeem chaw;
2. Tam sim no: kev ua haujlwm tam sim no yog 0-15mA, lub teeb pauv nrog qhov nce ntawm qhov tam sim no
3. Kev ua kom zoo: lub zog siv hluav taws xob raug txo qis 80% piv nrog cov roj uas tsis tas roj nrog tib lub luminous efficiency.
4. Kev siv tau: me me, txhua chav tsev LED nti yog 3-5 hli square, yog li nws tuaj yeem npaj mus rau ntau hom duab ntawm cov khoom siv, thiab tsim nyog rau cov chaw muaj kev sib txawv.
5. Kev ruaj khov: 100,000 teev, lub teeb ci yog 50% ntawm qhov pib.
6. Lub sijhawm teb: Lub sijhawm teb ntawm lub teeb incandescent yog milliseconds, thiab lub sijhawm teb ntawm LED teeb yog nanoseconds.
7. Kev ua phem rau ib puag ncig: tsis muaj teeb meem hlau mercury.
8. Xim: hloov qhov tam sim no tuaj yeem hloov xim. Lub teeb tsa hluav taws xob tuaj yeem hloov kho lub zog ntawm cov qauv tsim kom sib txawv thiab cov kis sib txawv ntawm cov khoom siv los ntawm kev hloov tshuaj kom ua tiav cov xim liab, daj, ntsuab, xiav, thiab txiv kab ntxwv lub teeb xim ntau. Piv txwv, thaum qhov tam sim no qis, LED muaj xim liab, vim tias tam sim no nce, nws tuaj yeem tig mus rau hauv cov txiv kab ntxwv, daj, thiab thaum kawg ntsuab.
