COB txheej txheem nqi thiab kho qhov muag / hluav taws xob khoom
Tus nqi txheej txheem
SMD Tag Nrho-xim: Cov khoom no muaj cov nqi raw khoom siab dua thiab cov txheej txheem tsim khoom ntau dua, ua rau muaj peev txheej ntau dua thiab tag nrho cov nqi.
COB Tag Nrho-xim: COB tshem tawm lub tswv yim bracket, tshem tawm electroplating, reflow soldering, thiab nto mount technology, txo cov txheej txheem los ntawm 1/3. Thaum nws qhov kev ua tau zoo hauv kev sib tsoo thiab cov txheej txheem hlau sib txuas yog piv rau SMD, COB ntim tau zoo dua hauv kev xa tawm, kev sib cais, kab sib cais, thiab ntim khoom. Ib txwm SMD ntim cov nqi zog thiab kev tsim khoom suav txog kwv yees li 15% ntawm cov nqi khoom siv, thaum COB tsuas yog 10%, uas ua rau txo tus nqi tsawg kawg yog 5% piv rau SMD puv -xim.
Optical/Electrical Properties
COB puv- xim muaj cov xim zoo sib xws, pom lub kaum ntse ntse, qhov chaw teeb pom kev zoo, qhov ci siab dua, thiab kev sib xyaw xim zoo dua- cov yam ntxwv thiab qhov zoo uas SMD puv - xim thiab dot- matrix puv - xim LEDs tsis tuaj yeem hla. Nrog nws qhov dav pom lub kaum ntse ntse thiab lub teeb ci siab, COB siv cov cuab yeej siv hluav taws xob ua kom sov, ua kom muaj kev lag luam - ua cov kev kho cua sov lumen (95%). Hauv qab no yog cov duab sib piv ntawm cov tsos, cov ces kaum, thiab lub teeb qauv ntawm COB thiab SMD (Nto Mount Devices). COB muab qhov pom kev zoo sib xws. Pom tseeb, nws yog qhov tseeb tias ntau pua lub teeb-emitting ntsiab lus ntawm COB board yog nyob rau tib lub PCB board, piv txwv li, nyob rau tib lub dav hlau kab rov tav. Yog li ntawd, lub teeb -emitting cov ntsiab lus yog tag nrho ntawm tib lub ntsiab lus siv, ua rau lub teeb pom kev zoo dua. Nyob rau hauv sib piv, SMD Cheebtsam yog ib tug zuj zus mounted ntawm lub PCB board, inevitably ua rau qhov siab tsis sib xws thiab ib tug tsis tshua muaj teeb pom kev zoo qhov chaw, ua rau ib tug inferior kev pom kev piv rau COB ntim.
COB muab lub teeb zoo dua.
Kev ntim khoom SMD suav nrog kev txuas ntau yam sib cais ntawm PCB pawg thawj coj los tsim daim ntawv thov LED. Txoj kev no raug kev txom nyem los ntawm cov teeb meem xws li taw tes teeb, glare, thiab ghosting. COB, ntawm qhov tod tes, yog ib pob kev sib koom ua ke, qhov chaw teeb pom kev zoo, muab tsis tau tsuas yog qhov kom zoo dua ntawm qhov pom dav dua (raws li tau hais hauv point 1) tab sis kuj txo lub teeb pom kev zoo.
COB muaj qhov pom dav dua.
Raws li tuaj yeem pom los ntawm daim duab teeb pom kev zoo, qhov pom lub kaum ntse ntse ntawm Auleda COB puv -xim loj dua li ntawm SMD puv -xim. Lub kaum sab xis saib ntawm SMD puv - xim yog li 110 degrees, thaum saib lub kaum sab xis ntawm COB puv - xim tuaj yeem ncav cuag 140-170 degrees yam tsis txo qhov ci. Nws kuj muaj lub kaum sab xis pom dav ntawm 140-170 degrees hauv lub kaum sab xis. Cov yam ntxwv no muaj txiaj ntsig tshwj xeeb hauv qee qhov kev siv.
