Hauv cov cuab yeej siv hluav taws xob niaj hnub no, LED zaub tau siv dav hauv digital signage, theem keeb kwm yav dhau, kho kom zoo nkauj sab hauv tsev thiab lwm yam kev lag luam vim nws lub siab ci, siab txhais, lub neej ntev thiab lwm yam zoo. Hauv kev tsim cov txheej txheem ntawm LED zaub, tshuab encapsulation yog qhov txuas tseem ceeb. Ntawm lawv, SMD encapsulation technology thiab COB encapsulation technology yog ob lub ntsiab encapsulation. Yog li, qhov txawv ntawm lawv yog dab tsi? Kab lus no yuav muab rau koj nrog kev txheeb xyuas qhov tob.
1.Dab tsi yog SMD ntim tshuab, SMD ntim txoj cai
SMD pob, lub npe tag nrho Surface Mounted Device (Nto Mounted Device), yog ib yam khoom siv hluav taws xob ncaj qha rau cov ntawv luam tawm Circuit Board (PCB) nto ntim tshuab. Cov cuab yeej no los ntawm lub tshuab muab tso rau hauv qhov tseeb, lub teeb ci LED (feem ntau muaj LED teeb-emitting diodes thiab cov khoom siv hluav taws xob tsim nyog) raug muab tso rau hauv PCB pads, thiab tom qab ntawd los ntawm reflow soldering thiab lwm txoj hauv kev kom paub txog kev sib txuas hluav taws xob.SMD ntim thev naus laus zis ua rau cov khoom siv hluav taws xob me me, sib dua hauv qhov hnyav, thiab ua rau kev tsim cov khoom siv hluav taws xob ntau dua thiab sib zog.
2.Qhov zoo thiab qhov tsis zoo ntawm SMD ntim tshuab
2.1 SMD Ntim Technology Advantages
(1)me me, lub teeb yuag:SMD ntim cov khoom yog me me, yooj yim rau kev sib xyaw ua ke ntawm high-density, tsim nyog rau kev tsim cov khoom siv hluav taws xob me me thiab lub teeb yuag.
(2)zoo high-frequency yam ntxwv:luv pins thiab txoj kev sib txuas luv luv pab txo qis inductance thiab tsis kam, txhim kho kev ua haujlwm siab.
(3)Yooj yim rau automated ntau lawm:haum rau automated tso tshuab ntau lawm, txhim kho ntau lawm efficiency thiab zoo stability.
(4)Kev ua haujlwm zoo thermal:Kev sib cuag ncaj qha nrog PCB nto, ua kom sov dissipation.
2.2 SMD ntim Technology Disadvantages
(1)kev kho mob kuj complex: Txawm hais tias txoj kev mounting nto ua rau nws yooj yim rau kev kho thiab hloov cov khoom, tab sis nyob rau hauv cov ntaub ntawv ntawm high-density kev koom ua ke, kev hloov ntawm ib tug neeg lub Cheebtsam yuav cumbersome ntau.
(2)Limited tshav kub dissipation cheeb tsam:Feem ntau yog los ntawm cov ntaub qhwv thiab gel thaum tshav kub kub dissipation, lub sij hawm ntev siab load ua hauj lwm yuav ua rau kom kub concentration, cuam tshuam rau lub neej kev pab cuam.
3.Dab tsi yog COB ntim tshuab, COB ntim txoj cai
COB pob, hu ua Chip on Board (Chip on Board package), yog ib lub nti liab qab welded ncaj qha rau ntawm PCB ntim tshuab. Cov txheej txheem tshwj xeeb yog cov nti liab qab (chip lub cev thiab I / O terminals hauv cov siv lead ua saum toj no) nrog cov khoom siv hluav taws xob lossis thermal nplaum txuas rau PCB, thiab tom qab ntawd los ntawm cov xaim (xws li txhuas lossis kub xaim) hauv ultrasonic, nyob rau hauv qhov kev txiav txim. Thaum tshav kub kub siab, lub nti I / O terminals thiab PCB pads txuas nrog, thiab thaum kawg kaw nrog resin nplaum tiv thaiv. Qhov no encapsulation tshem tawm cov tsoos LED teeb hlaws encapsulation kauj ruam, ua rau lub pob ntau compact.
4.Qhov zoo thiab qhov tsis zoo ntawm COB ntim tshuab
4.1 COB ntim tshuab zoo
(1) compact pob, me me:tshem tawm cov pins hauv qab, kom ua tiav cov pob me me.
(2) superior kev ua tau zoo:lub kub hlau txuas lub nti thiab lub rooj tsav xwm Circuit Court, lub teeb liab kis tau tus mob yog luv luv, txo cov crosstalk thiab inductance thiab lwm yam teeb meem los txhim kho kev ua tau zoo.
(3) Zoo cua sov dissipation:cov nti yog ncaj qha welded rau PCB, thiab tshav kub dissipated los ntawm tag nrho cov PCB board, thiab tshav kub yog yooj yim dissipated.
(4) Kev tiv thaiv muaj zog:tag nrho cov qauv tsim, nrog cov dej tsis muaj dej, noo noo pov thawj, plua plav pov thawj, tiv thaiv zoo li qub thiab lwm yam kev tiv thaiv.
(5) kev pom zoo:raws li qhov chaw teeb pom kev zoo, xim kev ua tau zoo dua, kev nthuav dav zoo dua, tsim nyog rau lub sijhawm ntev saib.
4.2 COB ntim tshuab tsis zoo
(1) kev tu ncua nyuaj:nti thiab PCB ncaj welding, tsis tuaj yeem disassembled nyias lossis hloov cov nti, cov nqi kho mob siab.
(2) nruj ntau lawm yuav tsum:cov txheej txheem ntim khoom ntawm ib puag ncig yuav tsum muaj siab heev, tsis pub plua plav, hluav taws xob zoo li qub thiab lwm yam kev ua qias tuaj.
5. Qhov txawv ntawm SMD ntim tshuab thiab COB ntim tshuab
SMD encapsulation thev naus laus zis thiab COB encapsulation thev naus laus zis hauv thaj chaw ntawm LED zaub txhua tus muaj nws tus kheej cov yam ntxwv, qhov sib txawv ntawm lawv yog feem ntau cuam tshuam rau hauv cov encapsulation, qhov loj thiab qhov hnyav, kev ua haujlwm kub dissipation, yooj yim ntawm kev saib xyuas thiab daim ntawv thov scenarios. Hauv qab no yog cov ncauj lus kom ntxaws sib piv thiab tsom xam:
5.1 Ntim txoj kev
⑴SMD ntim tshuab: lub npe tag nrho yog Surface Mounted Device, uas yog lub tshuab ntim khoom uas muag cov ntim LED nti rau saum npoo ntawm cov ntawv luam tawm Circuit Board (PCB) los ntawm lub tshuab patch precision. Txoj kev no yuav tsum tau muab cov nti LED ntim ua ntej los tsim ib qho kev ywj pheej thiab tom qab ntawd txuas rau ntawm PCB.
⑵ COB ntim tshuab: lub npe tag nrho yog Chip on Board, uas yog lub tshuab ntim khoom uas ncaj qha solders cov nti liab qab ntawm PCB. Nws tshem tawm cov kauj ruam ntim ntawm cov tsoos LED teeb hlaws dai, ncaj qha sib txuas cov nti liab qab rau PCB nrog cov kua nplaum los yog thermal conductive, thiab paub txog kev sib txuas hluav taws xob los ntawm cov hlau hlau.
5.2 Qhov loj thiab qhov hnyav
⑴SMD ntim: Txawm hais tias cov khoom siv me me, lawv qhov loj thiab qhov hnyav tseem raug txwv vim yog cov qauv ntim thiab cov ntaub qhwv.
⑵ COB pob: Vim qhov kev tshem tawm ntawm cov pins hauv qab thiab lub plhaub pob, COB pob ua tiav ntau qhov sib zog, ua rau lub pob me dua thiab sib dua.
5.3 Thaum tshav kub kub dissipation kev ua tau zoo
⑴SMD ntim: Feem ntau dissipates tshav kub los ntawm cov ntaub qhwv thiab colloids, thiab cov cua kub dissipation cheeb tsam yog kuj txwv. Nyob rau hauv siab brightness thiab siab load tej yam kev mob, tshav kub tej zaum yuav concentrated nyob rau hauv lub nti cheeb tsam, cuam tshuam lub neej thiab stability ntawm cov zaub.
⑵ COB pob: Lub nti yog ncaj qha welded rau ntawm PCB thiab cua sov tuaj yeem tawg los ntawm tag nrho PCB pawg thawj coj saib. Qhov kev tsim no ua tau zoo txhim kho cov cua kub dissipation kev ua tau zoo ntawm cov zaub thiab txo qhov tsis ua hauj lwm tus nqi vim overheating.
5.4 Yooj yim ntawm kev saib xyuas
⑴SMD ntim: Txij li cov khoom sib txuas ntawm nws tus kheej ntawm PCB, nws yog ib qho yooj yim los hloov ib qho khoom siv thaum tu. Qhov no yog qhov tsim nyog los txo cov nqi tu thiab ua kom lub sijhawm ua haujlwm luv.
⑵ COB ntim: Txij li cov nti thiab PCB tau ncaj qha welded rau hauv tag nrho, nws yog tsis yooj yim sua kom disassemble los yog hloov lub nti nyias. Thaum muaj teeb meem tshwm sim, feem ntau nws yog ib qho tsim nyog los hloov tag nrho PCB board los yog xa rov qab mus rau lub Hoobkas kho, uas ua rau kom tus nqi thiab qhov nyuaj ntawm kev kho.
5.5 Daim ntawv thov scenarios
⑴SMD ntim: Vim nws cov khoom lag luam siab thiab cov nqi qis, nws tau siv dav hauv kev ua lag luam, tshwj xeeb tshaj yog nyob rau hauv cov haujlwm uas raug nqi-rhiab heev thiab yuav tsum tau ua kom yooj yim txij nkawm, xws li sab nraum zoov billboards thiab sab hauv TV phab ntsa.
⑵ COB ntim: Vim nws qhov kev ua tau zoo thiab kev tiv thaiv siab, nws yog qhov tsim nyog rau high-end sab hauv tsev cov ntxaij vab tshaus, cov lus qhia rau pej xeem, cov chav saib xyuas thiab lwm yam xwm txheej nrog cov khoom zoo siab thiab cov cheeb tsam nyuaj. Piv txwv li, nyob rau hauv cov chaw hais kom ua, studios, cov chaw xa khoom loj thiab lwm qhov chaw uas cov neeg ua haujlwm saib lub vijtsam ntev ntev, COB ntim tshuab tuaj yeem muab cov kev paub zoo thiab pom kev zoo.
Xaus
SMD ntim tshuab thiab COB ntim tshuab txhua tus muaj lawv tus kheej tshwj xeeb zoo thiab daim ntawv thov scenarios nyob rau hauv daim teb ntawm LED zaub screen. Cov neeg siv yuav tsum ntsuas thiab xaiv raws li qhov xav tau tiag tiag thaum xaiv.
SMD ntim tshuab thiab COB ntim tshuab muaj lawv tus kheej zoo. SMD ntim tshuab yog dav siv nyob rau hauv kev ua lag luam vim nws lub siab loj hlob thiab tsis tshua muaj nqi ntau lawm, tshwj xeeb tshaj yog nyob rau hauv tej yaam num uas yog tus nqi-rhiab heev thiab yuav tsum tau siab txij nkawm yooj yim. COB ntim tshuab, ntawm qhov tod tes, muaj kev sib tw muaj zog hauv high-end sab hauv cov ntxaij vab tshaus, cov lus qhia rau pej xeem, cov chav saib xyuas thiab lwm yam kev lag luam nrog nws cov ntim ntim, kev ua tau zoo tshaj, zoo cua sov dissipation thiab muaj zog tiv thaiv kev ua haujlwm.
Post lub sij hawm: Sep-20-2024
