Cov txheej txheem ntim LED Vim yog cov qauv sib txawv ntawm LED, muaj qee qhov sib txawv hauv cov txheej txheem ntim, tab sis cov txheej txheem tseem ceeb yog tib yam. Cov txheej txheem tseem ceeb ntawm LED ntim yog: tuag ua ke → xaim khi → sealing kua nplaum → txiav ob txhais taw → grading → ntim.
Lub thev naus laus zis tseem ceeb ntawm lub zog loj-lub teeb ci ntim cov ntim khoom muag
2.1 Cov ntawv thov rau kev ntim tshuab. High-power LED ntim cuam tshuam nrog lub teeb, hluav taws xob, cua sov, kev teeb tsa thiab cov thev naus laus zis, thiab cov xwm txheej no puav leej yog ywj siab thiab cuam tshuam. Nws tsuas yog lub hom phiaj kev ntim khoom, hluav taws xob, tsim qauv thiab thev naus laus zis yog cov txhais tau tias, cov cua sov yog qhov tseem ceeb, thiab kev ua tau zoo yog cov pob zeb ua kom pom ntawm kev ntim theem. Xav txog cov txheej txheem sib xyaw thiab txo tus nqi tsim khoom, LED pob qauv tsim thiab nti tsim yuav tsum nqa tawm tib lub sijhawm. Txwv tsis pub, tom qab lub nti tsim, cov qauv nti yuav raug hloov kho vim qhov xav tau ntawm pob, uas yuav ua rau lub sijhawm ntev ntawm kev tsim khoom thiab nqi, lossis tseem yuav tsis muaj peev xwm ua tiav kev ua lag luam ntau lawm.
2.2 Kev ntim cov qauv tsim thiab ua kom pom cov cua sov ua kom zoo dua qub photoelectric conversion efficiency ntawm lub teeb hluav taws xob tso tawm tsuas yog 20% rau 30%, thiab 70% mus rau 80% ntawm cov hluav taws xob hluav taws xob tau hloov mus rau hauv tshav kub. Cov kub tso cia ntawm cov nplauv ci yog qhov tseem ceeb. Cov khoom siv hluav taws xob qis-ntim khoom siv hluav taws xob feem ntau siv cov nyiaj kua nplaum lossis insulating kua nplaum los khi cov nti hauv lub khob khob, ua tiav cov kev sib txuas sab hauv thiab sab nraud los ntawm vuam kub hlau (lossis xov tooj txhuas), thiab thaum kawg encapsulate nrog epoxy cob.
2.3 Optical tsim thev naus laus zis Cov khoom siv sib txawv muaj cov sib txawv ntawm cov xim ua kom sib haum, xim kub, hloov xim, siv lub teeb ci, thiab sib faib tawm ntawm cov khoom siv hluav taws xob ntau. Txhawm rau txhawm rau txhim kho lub teeb hluav taws xob ua kom pom tseeb ntawm lub cuab yeej thiab ua tiav lub teeb pom kev zoo dua lub kaum sab xis thiab lub teeb kis tau tus mob, lub nti nti thiab lub teeb ci xav tau kev tsim qauv.
2.4 Cov kev xaiv ntawm cov lauj kaub av nplaum Lub luag hauj lwm ntawm cov kua nplaum ua kua nplaum muaj ob lub ntsiab lus: (1) Kev tiv thaiv zoo rau cov nti thiab cov hlau kub; (2) Raws li cov khoom siv qhia kev teeb pom kev zoo, nws tuaj yeem coj tawm lub teeb ci ntau dua. Thaum lub sij hawm ntim, qhov poob los ntawm lub teeb tawm ntawm cov hluav taws xob tso tawm ntawm lub teeb hluav taws xob feem ntau muaj xws li: (1) qhov cuam tshuam poob ntawm photons ntawm qhov tawm interface ntawm lub teeb ci-tawm ntawm diode nti vim qhov sib txawv hauv refractive index (piv txwv li Fresnel poob ); (2) qhov nqus tau; (3) Tag nrho cov khoom sab hauv los poob. Yog li ntawd, txheej txheej txheej ntawm cov khoom siv kho qhov muag pob tshab nrog qhov ntsuas tau zoo ntawm qhov ntsuas ntawm qhov chaw ntawm lub nti tuaj yeem txo qhov kom ploj ntawm photons ntawm lub interface thiab txhim kho lub teeb ntxiv efficiency. Cov nquag siv cov nplaim nplaum siv yog epoxy resin thiab silica gel. Epoxy resin muaj viscosity tsawg, zoo fluidity, sim curing ceev, tsis muaj npuas tom qab kho, du nto, zoo gloss, siab hardness, zoo noo noo-pov thawj, tsis muaj dej thiab hmoov av pov thawj kev ua tau zoo, ua haujlwm tiv thaiv kom tsis txhob sov thiab ua kom muaj huab cua, muaj tus nqi qis, thiab luminous Diode ntim tau zoo dua. Silica gel muaj cov yam ntxwv ntawm lub teeb hloov mus ua ke, zoo thermal stability, siab refractive index, qis noo noo nqus, thiab tsis tshua muaj kev ntxhov siab. Nws zoo dua li epoxy cob, tab sis tus nqi ntau dua.
2.5 Phosphor hmoov txheej txheej ntau npaum li cas thiab kev siv tshuab hluav taws xob tswj lub luminous efficiency thiab lub teeb pom kev zoo ntawm lub zog-siab dawb lub teeb ci ntsa iab ua rau muaj feem xyuam nrog xaiv phosphor hmoov thiab cov txheej txheem. Qhov kev xaiv ntawm phosphor suav nrog qhov sib txuam ntawm excitation wavelength thiab nti wavelength, particle qhov loj me thiab kev sib thooj, kev ua kom zoo siab thiab lwm yam. Lub phosphor txheej kho tau kho raws li lub luminescence faib cov xiav nti kom ua rau lub teeb dawb sib xyaw, txwv tsis pub lub teeb xiav-daj xim daj yuav tshwm sim, uas yuav cuam tshuam loj rau qhov zoo ntawm lub teeb thiab zoo heev txo kev ua kom zoo dua.
