Los ntawm lub tswv yim lub cev, qhov sib txawv ntawm ob lus dag hauv lub ntim. COB teeb cov chaw siv "multi -}} Cov duab ci ntsa iab los yog siv ntau pua rab thev naus laus zis siv tshuab. Qhov saum npoo yog tom qab npog nrog ib txheej txheej nplaum fluorescent kom ua tiav lub teeb sib xyaw. Cov qauv no tshem tawm cov nkhaus thiab kub sib txuas hlau uas yuav tsum tau siv rau cov leds leds, txo thermal kuj los ntawm ntau dua 40%. Daim ntawv tshaj tawm kev lag luam qhia tau tias cov thermal tsis kam ntawm COB module yog 1.5℃/ w, thaum twg ntawm SMD LED module ntawm sib npaug ntawm 3℃/ W.
LED teeb, ntawm qhov tod tes, tswj lawv "tus kheej" xwm. Txhua tus coj undergoes ib txheej txheem ntim khoom, suav nrog kev sib tham uas tuag thiab kua nplaum ua kom tiav, ua ntej yuav tsum tau rov qab los ntawm PCB. Thaum cov qauv no nce cov txheej txheem nyuaj, nws muab cov peev xwm txhim kho kev muaj peev xwm hloov kho qhov xim kub thiab ci ci ntawm txhua tus coj.