Qhov zoo thiab qhov tsis zoo ntawm COB ntim LED zaub screen thiab nws txoj kev loj hlob nyuaj

Qhov zoo thiab qhov tsis zoo ntawm COB ntim LED zaub screen thiab nws txoj kev loj hlob nyuaj

Nrog kev nce qib ntawm cov khoom siv hluav taws xob hauv lub xeev teeb pom kev zoo, COB (chip on board) ntim tshuab tau txais kev saib xyuas ntau dua.Raws li COB lub teeb pom kev zoo muaj cov yam ntxwv ntawm cov thermal tsis kam, siab luminous flux ceev, tsawg dua glare, thiab cov emissions, nws tau dav siv nyob rau hauv tsev thiab sab nraum zoov teeb pom kev zoo fixtures, xws li down teeb, noob teeb, fluorescent raj, txoj kev teeb, thiab industrial thiab mining teeb.

Daim ntawv no piav qhia txog qhov zoo ntawm COB ntim piv nrog cov ntim khoom siv LED, feem ntau yog los ntawm 6 yam: theoretical zoo, kev tsim khoom zoo, tsis tshua muaj thermal resistance zoo, lub teeb zoo, qhov zoo ntawm daim ntawv thov, thiab cov nqi zoo, thiab piav qhia txog cov teeb meem tam sim no ntawm COB technology. .

Qhov sib txawv ntawm COB ntim thiab SMD ntim

Theoretical zoo ntawm COB:

1. Tsim thiab kev loj hlob: tsis muaj txoj kab uas hla ntawm ib lub teeb lub cev, nws tuaj yeem ua me me hauv kev xav;

2. Cov txheej txheem txheej txheem: txo tus nqi ntawm lub bracket, ua kom yooj yim rau kev tsim khoom, txo cov thermal tsis kam ntawm cov nti, thiab ua tiav cov ntim ntim siab;

3. Engineering installation: Los ntawm daim ntawv thov sab, COB LED zaub module tuaj yeem muab kev yooj yim dua thiab ceev installation efficiency rau cov tuam ntxhab ntawm cov ntawv thov sab.

4. Khoom yam ntxwv:

(1) Ultra lub teeb thiab nyias: PCB boards nrog tuab li ntawm 0.4-1.2mm tuaj yeem siv raws li qhov xav tau tiag tiag ntawm cov neeg siv khoom kom txo qhov hnyav kom tsawg li 1/3 ntawm cov khoom qub, uas tuaj yeem txo cov qauv. , tsheb thauj mus los thiab engineering nqi rau cov neeg siv khoom.

(2) Kev sib tsoo tsis kam thiab compression kuj: COB cov khoom ncaj qha encapsulate LED chips nyob rau hauv concave teeb txoj hauj lwm ntawm PCB boards, thiab ces encapsulate thiab solidify lawv nrog epoxy resin nplaum.Qhov saum npoo ntawm cov ntsiab lus ntawm lub teeb yog tsa mus rau hauv lub ntsej muag kheej kheej, uas yog du, tawv, cuam tshuam resistant thiab hnav-resistant.

(3) Lub kaum sab xis loj ntawm kev pom: lub kaum sab xis ntawm qhov pom yog ntau dua 175 degrees, ze rau 180 degrees, thiab muaj qhov zoo dua qhov pom ntawm cov xim av nkos teeb pom kev zoo.

(4) Muaj peev xwm ua kom muaj cua sov muaj zog: COB cov khoom ntim lub teeb ntawm PCB, thiab hloov cov cua sov ntawm lub teeb ci los ntawm cov ntawv ci tooj liab ntawm PCB.Copper foil thickness ntawm PCB board muaj cov txheej txheem nruj heev.Nrog rau qhov sib ntxiv ntawm cov txheej txheem kub deposition, nws yuav tsis yooj yim ua rau lub teeb attenuation loj.Yog li ntawd, muaj ob peb lub teeb tuag, zoo heev txuas lub neej ntawm LED zaub.

(5) Hnav resistant, yooj yim los ntxuav: du thiab tawv tawv, cuam tshuam resistant thiab hnav-resistant;Tsis muaj daim npog ntsej muag, thiab cov plua plav tuaj yeem ntxuav nrog dej lossis ntaub.

(6) Txhua yam huab cua zoo heev: kev kho mob triple tiv thaiv tau txais, nrog rau cov dej tsis zoo, noo noo, corrosion, plua plav, hluav taws xob zoo li qub, oxidation thiab ultraviolet teebmeem;Nws tuaj yeem ua tau raws li tag nrho cov huab cua ua haujlwm, thiab qhov kub thiab txias ib puag ncig los ntawm - 30℃rau - 80℃tseem tuaj yeem siv tau ib txwm.

Taw qhia rau COB Ntim Txheej Txheem

1. Qhov zoo ntawm kev tsim khoom

Cov txheej txheem tsim khoom ntawm COB ntim yog qhov pib zoo ib yam li cov tsoos SMD, thiab kev ua haujlwm ntawm COB ntim yog qhov pib zoo ib yam li ntawm SMD ntim hauv cov txheej txheem ntawm cov khoom siv hlau.Nyob rau hauv cov nqe lus ntawm dispensing, sib cais, lub teeb tis thiab ntim, efficiency ntawm COB ntim yog ntau dua li cov khoom SMD.Cov nqi ua haujlwm thiab kev tsim khoom ntawm cov khoom ntim SMD ib txwm muaj txog li 15% ntawm cov nqi khoom siv, thaum cov nqi ua haujlwm thiab kev tsim khoom ntawm COB ntim nyiaj txog li 10% ntawm cov khoom siv.Nrog COB ntim, cov nqi zog thiab kev tsim khoom tuaj yeem txuag tau li 5%.

2. Qhov zoo ntawm cov thermal tsis kam

Cov txheej txheem thermal tsis kam ntawm cov ntawv ntim khoom SMD yog: nti - cov khoom siv lead ua nplaum - cov sib koom ua ke - solder paste - tooj liab ntawv ci - insulating txheej - txhuas.Lub thermal kuj ntawm COB ntim system yog: nti - khoom siv lead ua nplaum - txhuas.Lub kaw lus thermal tsis kam ntawm COB pob yog qis dua li cov pob SMD tsoos, uas zoo heev txhim kho lub neej ntawm LED.

3. Lub teeb zoo zoo

Hauv kev ntim khoom SMD ib txwm muaj, ntau yam khoom siv sib cais tau muab tso rau ntawm PCB los tsim cov khoom siv teeb pom kev zoo rau cov ntawv thov LED hauv daim ntawv thaj ua rau thaj.Txoj kev no muaj teeb meem ntawm lub teeb pom kev, glare thiab ghosting.COB pob yog ib pob kev sib xyaw ua ke, uas yog qhov chaw teeb pom kev zoo.Qhov kev xav yog loj thiab yooj yim los kho, txo qhov poob ntawm lub teeb refraction.

4. Daim ntawv thov zoo

COB lub teeb qhov chaw tshem tawm cov txheej txheem ntawm mounting thiab reflow soldering ntawm daim ntawv thov kawg, zoo heev txo cov kev tsim thiab tsim cov txheej txheem ntawm daim ntawv thov kawg, thiab txuag cov khoom siv sib xws.Tus nqi ntawm cov khoom siv thiab kev tsim khoom yog qis dua, thiab cov khoom siv tau zoo dua.

5. Tus nqi zoo

Nrog COB lub teeb ci, tus nqi ntawm tag nrho lub teeb 1600lm lub tswv yim tuaj yeem raug txo los ntawm 24.44%, tus nqi ntawm tag nrho cov teeb 1800lm yuav raug txo los ntawm 29%, thiab tus nqi ntawm tag nrho cov teeb 2000lm yuav raug txo los ntawm 32.37%.

Siv COB lub teeb pom kev zoo muaj tsib qhov zoo dua siv cov tsoos SMD pob lub teeb qhov chaw, uas muaj qhov zoo ntawm cov khoom siv hluav taws xob ntau lawm, thermal tsis kam, lub teeb zoo, daim ntawv thov thiab nqi.Tus nqi tag nrho tuaj yeem raug txo los ntawm 25%, thiab cov cuab yeej siv tau yooj yim thiab yooj yim siv, thiab cov txheej txheem yooj yim.

Tam sim no COB technical challenges:

Tam sim no, COB kev lag luam sib sau ua ke thiab cov txheej txheem txheej txheem yuav tsum tau txhim kho, thiab nws kuj ntsib qee qhov teeb meem kev lag luam.

1. Thawj tus nqi ntawm kev ntim khoom yog tsawg, qhov sib piv yog tsawg, thiab tus nqi kho mob siab;

2. Nws cov xim rendering uniformity yog deb tsawg tshaj li ntawm cov zaub screen qab SMD nti nrog lub teeb thiab xim sib cais.

3. Cov ntim khoom COB uas twb muaj lawm tseem siv cov txheej txheem nti, uas yuav tsum muaj cov txheej txheem siv lead ua thiab cov hlau sib txuas.Yog li ntawd, muaj ntau yam teeb meem nyob rau hauv txoj kev sib txuas ntawm cov hlau, thiab cov txheej txheem nyuaj yog inversely proportional rau lub ncoo cheeb tsam.

4. Tus nqi tsim khoom: vim muaj qhov tsis zoo, tus nqi tsim khoom yog siab dua SMD qhov sib nrug me me.

Raws li cov laj thawj saum toj no, txawm hais tias tam sim no COB thev naus laus zis tau ua qee qhov kev sib tw hauv cov duab ua haujlwm, nws tsis tau txhais hais tias SMD thev naus laus zis tau thim rov qab los ntawm qhov poob.Nyob rau hauv qhov chaw uas qhov chaw sib nrug yog ntau tshaj 1.0mm, SMD ntim tshuab, nrog nws cov khoom lag luam paub tab thiab ruaj khov, kev ua lag luam dav dav thiab kev txhim kho thiab kev saib xyuas zoo, tseem yog lub luag haujlwm tseem ceeb, thiab tseem yog qhov kev xaiv zoo tshaj plaws. kev taw qhia rau cov neeg siv khoom thiab kev ua lag luam.

Nrog rau kev txhim kho maj mam ntawm COB cov khoom siv thev naus laus zis thiab kev hloov pauv ntxiv ntawm kev lag luam xav tau, daim ntawv thov loj ntawm COB ntim tshuab yuav cuam tshuam nws cov txiaj ntsig kev lag luam thiab tus nqi hauv thaj tsam ntawm 0.5mm ~ 1.0mm.Txhawm rau qiv ib lo lus los ntawm kev lag luam, "COB ntim yog tsim rau 1.0mm thiab hauv qab".

MPLED tuaj yeem muab rau koj nrog LED zaub ntawm COB ntim txheej txheem, thiab peb ST Pro series khoom tuaj yeem muab cov kev daws teeb meem zoo li no. LED zaub screen ua tiav los ntawm cob ntim txheej txheem muaj qhov sib nrug me me, pom meej dua thiab cov duab zoo dua.Lub teeb-emitting nti yog ntim ncaj qha rau ntawm lub rooj tsavxwm PCB, thiab cov cua sov tau ncaj qha mus rau ntawm lub rooj tsavxwm.Tus nqi thermal kuj yog me me, thiab cov cua kub dissipation muaj zog dua.Lub teeb saum npoo emits lub teeb.Zoo dua qub.

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