Mizinda yotukuka siyingafanane ndi kukongoletsa kwa magetsi a LED. Ndikukhulupirira tonse tawona ma LED. Chithunzi chake chawonekera m’malo onse amoyo wathu ndikuwunikira miyoyo yathu.

Monga chonyamulira cha kutentha ndi mpweya convection, matenthedwe matenthedwe a Power LED ophatikizidwa PCB imatenga gawo lofunika kwambiri pakuwonongeka kwa kutentha kwa LED. DPC ceramic PCB yokhala ndi magwiridwe antchito kwambiri ndipo mtengo wotsika pang’onopang’ono, muzinthu zambiri zamagetsi zamagetsi zikuwonetsa kupikisana mwamphamvu, ndiye tsogolo lamphamvu lomwe ma CD akukonzekera kukula. Ndikukula kwa sayansi ndi ukadaulo komanso kutuluka kwa ukadaulo watsopano wokonzekera, matenthedwe otentha kwambiri a ceramic monga chovala chatsopano chamagetsi cha PCB chimakhala ndi chiyembekezo chantchito yayikulu.

Ukadaulo wa ma CD wa LED umapangidwa makamaka ndikusintha pamtundu waukadaulo wazida, koma uli ndi chidziwitso chachikulu. Nthawi zambiri, pachimake pa chida chodziwika chimasindikizidwa m’thupi la phukusi. Ntchito yayikulu phukusili ndikuteteza kulumikizana kwapakati komanso kwathunthu kwamagetsi. Ndipo ma CD a LED ndikumaliza kutulutsa kwa magetsi, kuteteza ntchito yabwinobwino ya chubu, kutulutsa: kuwonekera kowoneka bwino, magwiridwe amagetsi, ndi mawonekedwe owoneka bwino pakupanga ndi ukadaulo waukadaulo, sizingangokhala zowongolera zamagetsi za LED.

Ndikusintha kopitilira muyeso mphamvu yolowetsera ya LED, kutentha kwakukulu komwe kumapangidwa ndi kutaya kwamphamvu kwamphamvu kumapereka zofunikira zapamwamba pazinthu zopangira ma LED. Mu njira yothetsera kutentha kwa LED, phukusi la PCB ndiye cholumikizira chofunikira cholumikizira njira yakunja ndi yakunja yotulutsa kutentha, imagwira ntchito yotulutsa njira yolumikizira kutentha, kulumikizana kwa dera komanso kuthandizira kwa chip. Pazogulitsa zamagetsi zamagetsi zamagetsi zamagetsi, ma PCBS amawafunikira kutchinjiriza kwamphamvu kwamagetsi, madutsidwe otenthetsa kwambiri komanso kukhathamira kwamatenthedwe kofananira ndi chip.

Yankho lomwe lilipo ndikulumikiza chip molunjika ku radiator yamkuwa, koma radiator yamkuwa ndiyo njira yokhayo. Malinga ndi magwero opepuka, kulekana kwamagetsi sikukwaniritsidwa. Potsilizira pake, gwero lowala limaphatikizidwa pa bolodi la PCB, ndipo chosanjikiza chimafunikirabe kuti tipeze kupatukana kwamagetsi. Pakadali pano, ngakhale kutentha sikukhathamira pa chip, chimadzaza pafupi ndi malo osanjikiza omwe ali pansi pa gwero lowalako. Mphamvu zikamakula, mavuto a kutentha amabwera. DPC ceramic gawo lapansi lingathetse vutoli. Itha kukonza chip molunjika ku ceramic ndikupanga bowo lolumikizana molumikizana ndi ceramic kuti ipange njira yodziyimira yokha yoyendetsera mkati. Zoumbaumba zokhazokha ndizotetezera, zomwe zimatulutsa kutentha. Uku ndikulekana kwamagetsi pamphamvu yamagetsi.

M’zaka zaposachedwa, SMD LED imathandizira nthawi zambiri imagwiritsa ntchito pulasitiki wopanga zida zotentha kwambiri, pogwiritsa ntchito utomoni wa PPA (polyphthalamide) ngati zopangira, ndikuwonjezeranso zosinthira kuti zikwaniritse zinthu za PPA zopangira. Chifukwa chake, zida za PPA ndizoyenera kupangira jekeseni komanso kugwiritsa ntchito mabakiteriya a SMD. PPA matenthedwe otenthetsera otsika kwambiri, kutentha kwake kumadutsa makamaka pazitsulo zotsogola, kutaya kwa kutentha kumakhala kochepa, kokha koyenera kupangira ma LED otsika-mphamvu.

Pofuna kuthana ndi vuto la kupatukana kwamagetsi pamalo opangira magetsi, magawo a ceramic ayenera kukhala ndi izi: choyamba, iyenera kukhala ndi matenthedwe otentha kwambiri, madongosolo angapo apamwamba kuposa utomoni; Chachiwiri, iyenera kukhala ndi mphamvu yayikulu yotchingira; Chachitatu, dera limatha kusintha kwambiri ndipo limatha kulumikizidwa kapena kuzunguliridwa mozungulira ndi chip popanda mavuto. Wachinayi ndi wapamwamba pamwamba flatness, sipadzakhala kusiyana pamene kuwotcherera. Chachisanu, ziwiya zadothi ndi zitsulo ziyenera kukhala zomatira kwambiri; Chachisanu ndi chimodzi ndikulumikizana kopindika kudutsa, motero kupangitsa kuti SMD ipangidwe kuti izitsogolera dera kuchokera kumbuyo kupita kutsogolo. Gawo lokhalo lomwe limakwaniritsa izi ndi gawo la DPC ceramic.

Ceramic gawo lokhala ndi matenthedwe otenthetsa amatha kusintha kwambiri kutentha kwanyengo, ndiye chinthu choyenera kwambiri pakukula kwamphamvu yayikulu, yaying’ono yaying’ono ya LED. Ceramic PCB ili ndi matenthedwe atsopano opangira zinthu komanso mawonekedwe amkati amkati, omwe amapanga zolakwika za PCB ya aluminium ndipo imathandizira kuzirala konse kwa PCB. Mwa zida za ceramic zomwe zikugwiritsidwa ntchito kuziziritsa ma PCBS, BeO ili ndi matenthedwe otentha kwambiri, koma koyefishienti yake yolumikizana ndi yosiyana kwambiri ndi ya silicon, ndipo kawopsedwe kake pakupanga kumachepetsa kugwiritsa ntchito kwake. BN imagwira bwino ntchito, koma imagwiritsidwa ntchito ngati PCB. Zinthuzo zilibe zabwino zilizonse ndipo ndizotsika mtengo. Pakadali pano akuphunziridwa ndikukwezedwa; Pakachitsulo carbide imakhala ndi mphamvu yayikulu komanso yotentha kwambiri, koma kulimbikira ndi kutchinjiriza kwake kumakhala kotsika, ndipo kuphatikiza pambuyo pa metallization sikukhazikika, komwe kungapangitse kusintha kwamachitidwe amadzimadzi ndi ma dielectric osagwiritsidwa ntchito ngati kutchingira ma CD a PCB.

Ndikukhulupirira kuti mtsogolomo, sayansi ndi ukadaulo zikatukuka kwambiri, LED ibweretsa kukhala kosavuta m’moyo wathu m’njira zosiyanasiyana, zomwe zimafuna kuti ofufuza athu aziphunzira mwakhama, kuti athandizire pakukula kwa sayansi ndi ukadaulo.