Nyob rau hauv lub ntiaj teb thev naus laus zis niaj hnub no uas nce qib sai sai, cov kev daws teeb meem LED zaub tau hloov pauv ntau heev. LED thev naus laus zis tau hloov pauv kev lag luam teeb pom kev zoo, muab cov kev xaiv siv hluav taws xob zoo thiab siv tau ntev rau cov neeg siv khoom thiab cov lag luam. Ntawm ntau yam kev teeb tsa LED, COB (Chip on Board) tau tshwm sim ua qhov kev xaiv zoo dua vim nws cov yam ntxwv kev siv tshuab. Hauv tsab xov xwm no, peb yuav tshawb nrhiav cov laj thawj vim li cas COB muaj qhov zoo dua li SMD (Surface Mount Device) thev naus laus zis siv dav dav. Los ntawm nws cov pa phem tsawg mus rau kev tiv thaiv zoo dua los ntawm cov yam ntxwv ib puag ncig, COB yeej ci ntsa iab dua nws cov neeg sib tw.
1.SMD vs. COB: Qhov twg zoo dua?
Thaum nws los txog rau thev naus laus zis LED zaub, ob lub tuam txhab sib tw tseem ceeb hauv kev ua lag luam: SMD thiab COB. Txawm hais tias Surface Mount Device tau ntev los ua qhov kev xaiv zoo rau cov teeb pom kev zoo LED, COB tau tshwm sim los ua lwm txoj hauv kev zoo heev.
Tsis zoo li SMD, uas muaj cov LED diodes uas tau teeb tsa ib leeg rau ntawm lub rooj tsavxwm, COB muaj ntau lub LED chips hauv ib lub module. Qhov kev teeb tsa tshwj xeeb no tsis yog tsuas yog ua kom lub teeb ci thiab lub zog ntawm lub teeb xwb tab sis kuj txo qhov kev poob ntawm lub teeb thaum mus deb dua. COB tus qauv tsim tshiab ua rau lub teeb ci tsis muaj qhov sib xws thiab muaj xim zoo nkauj.
II. Thermal tsawg nrog cua sov tsawg dua
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm COB dua li SMD yog nws cov peev xwm tswj hwm thermal zoo dua. COB thev naus laus zis muab kev tiv thaiv thermal qis dua vim nws tsim qauv me dua. Kev tiv thaiv thermal txiav txim siab tias cua sov dissipates los ntawm LED module, ua rau COB ua haujlwm zoo dua ntawm kev txo cov cua sov buildup. Qhov no ua rau tsis tsuas yog txhim kho lub neej ntev thiab txo cov kev xav tau kev saib xyuas tab sis kuj txhim kho kev nyab xeeb raws liCOB modulestsis tshua muaj feem yuav kub dhau.
III. Kev Tiv Thaiv Zoo Kawg Nkaus Los Ntawm Tej Yam Ib Puag Ncig
COB zaubmuab kev tiv thaiv zoo heev rau ntau yam ib puag ncig, ua kom muaj kev ruaj khov thiab kev ntseeg tau hauv ntau yam xwm txheej. Kho nrog epoxy resin los txhim kho kev ua haujlwm tiv thaiv. Nws muaj kev tiv thaiv zoo rau cov dej noo, plua plav, static, oxidation, thiab lub teeb xiav. Kev tiv thaiv zoo dua no ua rau COB teeb pom kev zoo kom vam meej hauv cov chaw nyuaj xws li qhov chaw sab nraum zoov lossis thaj chaw uas muaj dej noo ntau. Tsis tas li ntawd, COB qhov kev tiv thaiv zoo tshaj plaws rau oxidation ua kom ntseeg tau tias cov LEDs khaws lawv qhov ci thiab xim raug rau lub sijhawm ntev, tsis zoo li lawv cov SMD counterparts.
IV. Qhov zoo tsaus dua thiab ntse dua.
Cov qauv ntawm COB thev naus laus zis tsis yog tsuas yog txhim kho nws cov kev tswj hwm thermal thiab kev tiv thaiv xwb tab sis kuj pab txhawb rau nws qhov zoo ntawm lub teeb pom kev zoo. Vim yog cov chips LED sib nrug ze, COB tso tawm lub teeb ci ntau dua thiab muaj zog, ua rau muaj cov duab ntxoov ntxoo tsaus dua thiab cov ntsiab lus meej dua. Qhov no ua rau COB tsim nyog rau cov ntawv thov uas qhov tseeb thiab qhov sib piv siab yog qhov tseem ceeb, xws li tsev khaws puav pheej, cov khw muag khoom, thiab cov chaw ua yeeb yam. Lub teeb pom kev zoo dua los ntawm COB thev naus laus zis ua rau muaj kev nyiam pom thiab kev pom tseeb ntawm qhov chaw ci ntsa iab.
Raws li kev lag luam LED Display txuas ntxiv mus txuas ntxiv hloov zuj zus,COB thev naus laus zistau tshwm sim los ua ib qho kev xaiv tshiab thiab zoo tshaj plaws rau cov kev daws teeb meem LED. Nws cov yam ntxwv kev ua haujlwm, xws li lub teeb pom kev zoo sib xws, cov pa phem tsawg, kev tiv thaiv zoo dua los ntawm cov yam ntxwv ib puag ncig, thiab lub teeb pom kev zoo dua, ua rau nws yog ib qho kev xaiv zoo tshaj plaws. COB tsis yog tsuas yog muab kev ua tau zoo dua thiab lub neej ntev xwb tab sis kuj muab qhov zoo dua ntawm kev pom, uas yog qhov tseem ceeb rau ntau yam kev siv.
Nrog nws qhov nrov zuj zus thiab kev nce qib hauv cov txheej txheem tsim khoom,COB thev naus laus zistab tom yooj yim rau cov neeg siv khoom thiab cov lag luam thoob plaws ntiaj teb. Txais tos COB zaubcov kev daws teeb meem cog lus tias yuav xa cov kev xaiv teeb pom kev zoo dua, ua haujlwm tau zoo dua, thiab kav ntev dua thaum hloov pauv txoj hauv kev uas peb ci ntsa iab rau peb ib puag ncig.
Lub sijhawm tshaj tawm: Lub Kaum Hli-25-2023
