Cov ntaub ntawv tseem ceeb hais txog substrates rau saj zawg zog LED strips

Koj yuav xav txog qhov kub thiab txias, tus naj npawb ntawm LEDs, thiab cov khoom siv hluav taws xob sib raug zoo thaum sib piv ntau hom kev hloov pauv.LED strips. Koj puas tau xav txog qhov txuas thiab txuas ntawm LEDs, txawm li cas los xij? Niaj hnub no, peb yuav soj ntsuam lub substrate ntawm lubLED stripshauv kev nthuav dav, nrog rau qhov zoo ntawm cov ntaub ntawv zoo li cas thiab qee qhov feem ntau - tus yam ntxwv tsis pom zoo tuaj yeem cuam tshuam qhov kev ua tau zoo ntawm cov strips.

Nyob rau hauv dab tsi txoj kev yog lub substrate ntawm lub LED sawbsiv?

Lub rooj tsav xwm Circuit Court uas tuav cov chips LED yog hu ua LED strip substrate. Lub substrate tsis tsuas yog ua haujlwm raws li lub hauv paus ntawm LED sawb, tab sis nws kuj ua raws li cov khoom siv hluav taws xob ua tsaug rau nws cov khoom siv hluav taws xob thiab cov kav dej tseem ceeb rau cov cua sov.
Substratum rau saj zawg zogLED strips: kev tsim kho thiab cov khoom siv
Lub 16-ko taw reels ntawm saj zawg zog substrate LED sawb yog cov feem ntau. Raws li hom substrate, hloov tau yooj yim luam tawm Circuit Court technology yog dav ua haujlwm (FPC). Ib pliag tam sim no, muaj cov khoom siv hluav taws xob hloov tau yooj yim. Cov no yog qhov zoo rau cov khoom siv hluav taws xob uas muaj qhov me me los yog nkhaus.
Los ntawm kev siv tib yam ntxwv ntawm lub substrate, hloov tau LED strips muaj peev xwm tsim tau ntawm no twb muaj lawm technology. Polyimide, lossis PI raws li nws paub ntau dua, yog cov khoom xaiv rau lawv.
Qhov zoo tshaj plaws saj zawg zog thiab kub tsis kam ntawm polyimides yog matched los ntawm lawv tshwj xeeb endurance. Vim nws cov qauv kev ncaj ncees thiab yooj yooj yim, polyimide yog ib qho tseem ceeb rau cov khoom sivLED strips.
Siv cov kua nplaum tshwj xeeb hloov tau yooj yim, cov txheej txheem pib nrog cov txheej txheem tooj liab puag ncig, thiab tom qab ntawd txuas ntxiv nrog ib txheej txheej thiab ob txheej txheej ntawm polyimide polymer. Lub "coverlay," lo lus rau cov txheej txheej polyimide, los ntawm zaj sawv ntawm hues. Txhawm rau ua kom pom qhov pom tseeb, dawb feem ntau yog xim xaiv.
Cov qauv kev ruaj ntseg thiab kev tiv thaiv ntawm cov txheej tooj liab yog muab los ntawm peb txheej ntawm polyimide. Tab sis txhawm rau kom cov LEDs thiab lwm qhov chaw ua rau hluav taws xob sib cuag, muaj qhov me me uas cov tooj liab yuav tsum nyob twj ywm.
Cov kauj ruam kawg yog los npog covLED sawb's rov qab nrog ob - daim kab xev. Qhov ob -sided nplaum feem ntau siv rau lub hom phiaj no yog 3M 200MP.
 

Tus nqi ntawm tooj liab tseem ceeb

Xaiv cov tooj liab yog ib feem tseem ceeb ntawm kev tsim hluav taws xob hluav taws xob. Thaum muaj ntau tus qauv tsim nyob rau hauv qhov zoo thiab purity ntawm tooj liab siv nyob rau hauv hluav taws xob circuits, lub thickness yuav txawv heev. Txawm hais tias ooj (oz) yog qhov ntsuas ntawm qhov tuab, lawv feem ntau siv los tham txog qhov tuab ntawm cov tooj liab li cas. Qhov no yog vim hais tias kev txhais lus yog raws li pes tsawg ounces ntawm tooj liab nws yuav siv tau kom tau ib tug muab thickness hla ib square feet.
Khaws lub qhov muag ntawm tooj liab thickness thaum mus yuav khoomLED sawb teeb. Yam tsawg kawg, koj yuav xav tau 2.0 ooj, thiab nyiam dua 3.0 ooj lossis ntau dua, rausiab - zog LED strips. Cov tooj liab tuab yog superior, tag nrho lwm yam sib npaug, vim yog vim li cas hauv qab no:

Lub circuitry ntawm lubLED sawbtuaj yeem ua hluav taws xob ntau dua nrog cov tooj liab tuab. Thaum tsis muaj tooj liab txaus, cua sov tsim thiab hluav taws xob tsis kam nce, uas ua rau qhov hluav taws xob poob thiab tej zaum cov LEDs tuag ua ntej lawv lub sijhawm.
Tooj liab uas yog thicker tso cai rau cua sov kom dissipated sai dua. Kev ua tau zoo thiab kev ua neej ntev ntawm LEDs yog ncaj qha proportional rau sai npaum li cas lawv cov cua sov dissipated rau hauv cov huab cua ib puag ncig. Txij li thaum tooj liab yog cov khoom siv hluav taws xob zoo heev, cov txheej txheej tuab yuav pab tau zoo heev hauv cov cua sov uas tsim los ntawm LEDs.
 

Muaj peev xwm hloov tauLED stripskom dissipate cua sov yog tsawg.

Ib qho teeb meem loj ntawm kev hloov pauv LED sawb substrates yog lawv cov kev ua haujlwm thermal subpar. Kapton (polyimide) muaj cov thermal conductivity ntawm 0.12 W / m-K, thaum cov tshuaj nplaum los ntawm 3M muaj nqi ntawm 0.18 W / m-K.
Hauv qhov sib piv, cov thermal conductivity ntawm tooj liab yog 385 W / m-K thiab cov txhuas yog 205 W / m-K; txheej txheej dielectric hauv PCBs nrog hlau cores tuaj yeem ua tiav 2.0 W / m-K. Nrog zoo - npaj thermal vias, cov thermal conductivity ntawm ob - txheej FR-4 PCB tuaj yeem ua rau tsis pom zoo, txij li thaum tshav kub tuaj yeem xa ncaj qha mus rau tooj liab ntawm sab nraub qaum.
Tsis tuaj yeem ua tau ntau, txawm li cas los xij feem ntauLED sawbcov khoom yog tsim los kom tsis txhob overheating. Tej zaum koj yuav tsis muaj peev xwm khiav cov LED strips kom nruj raws li koj xav tau vim tias lub tshav kub tsis tuaj yeem khiav ceev txaus. Qhov no zoo li lub cav Ferrari nrog lub tshuab hluav taws xob tsis muaj zog uas tiv thaiv nws kom tsis txhob ncav cuag nws qhov kev ua tau zoo tshaj plaws.

Xav txog yog txoj hauv kev zoo tshaj plaws los daws cov teeb meem kub. Thaum qhov no yuav txhim kho koj cov kev ua tau zoo thermal, nws yuav tu siab yuam koj kom txi qhov hloov tau yooj yim.