Ezweni lanamuhla lobuchwepheshe elithuthuka ngokushesha, izixazululo zokubonisa i-LED ziguquke kakhulu. Ubuchwepheshe be-LED sebuguqule imboni yokukhanyisa, buhlinzeka ngezinketho ezonga amandla nezihlala isikhathi eside kubathengi namabhizinisi ngokufanayo. Phakathi kokuhlelwa okuhlukahlukene kwe-LED, i-COB (Chip on Board) ivele njengenketho ephakeme ngenxa yezimpawu zayo zobuchwepheshe. Kulesi sihloko, sizocubungula izizathu zokuthi kungani i-COB ibamba inzuzo ngaphezu kobuchwepheshe obusetshenziswa kakhulu be-SMD (Surface Mount Device). Kusukela ekukhiqizweni kwayo okushisayo kuya ekuvikelekeni okuthuthukisiwe ezicini zemvelo, i-COB idlula izimbangi zayo ngempela.
1.I-SMD vs. COB: Yikuphi Okungcono?
Uma kukhulunywa ngobuchwepheshe bokubonisa i-LED, izimbangi ezimbili ezinkulu zibusa imakethe: i-SMD ne-COB. Ngenkathi i-Surface Mount Device sekuyisikhathi eside iyinketho yokukhetha izixazululo zokukhanyisa kwe-LED, i-COB ivele njengenye indlela emangalisayo.
Ngokungafani ne-SMD, equkethe ama-diode e-LED afakwe ebhodini lesifunda, i-COB ihlanganisa ama-chips e-LED amaningi ngaphakathi kwemojuli eyodwa. Lokhu kulungiselelwa okuyingqayizivele akugcini nje ngokuthuthukisa ukukhanya nokuqina kokukhanya kodwa futhi kunciphisa ukufiphala kokukhanya kumabanga amade. Idizayini esezingeni eliphezulu ye-COB iphumela ekuphumeni kokukhanya okungenamthungo okufana nokunikeza umbala ophezulu.
II. I-Thermal Ephansi Nokushisa Okuncane
Enye yezinzuzo eziyinhloko ze-COB ngaphezu kwe-SMD amandla ayo okuphatha okushisayo aphezulu. Ubuchwepheshe be-COB bunikeza ukumelana nokushisa okuphansi ngenxa yomklamo wabo ohlangene. Ukumelana nokushisa kunquma ukuthi ukushisa kuhlakazeka kanjani kumojula ye-LED, okwenza i-COB isebenze kahle kakhulu ekwehliseni ukwakheka kokushisa. Lokhu akuphumeleli nje kuphela ekuthuthukisweni kokuphila isikhathi eside kanye nezidingo ezincishisiwe zokulungisa kodwa futhi nokuphepha okuthuthukisiwe njengobaAmamojula we-COBabajwayele ukushisa ngokweqile.
III. Ukuvikelwa Okuhle Kakhulu Ngokuphikisana Nezinto Zemvelo
Isibonisi se-COBinikeza isivikelo esihle kakhulu ezicini ezihlukahlukene zemvelo, iqinisekisa ukuqina nokwethembeka ezimweni ezihlukahlukene. Ilashwe nge-epoxy resin ukuze kuthuthukiswe ukusebenza kokuvikela. Ikwazi ukumelana nomswakama, uthuli, i-static, i-oxidation, nokukhanya okuluhlaza okwesibhakabhaka. Lokhu kuvikela okuthuthukisiwe kuvumela izixazululo zokukhanyisa kwe-COB ukuthi ziphumelele ezindaweni eziyinselele ezifana nezilungiselelo zangaphandle noma izindawo ezinomswakama ophezulu. Ukwengeza, ukumelana okuphezulu kwe-COB ku-oxidation kuqinisekisa ukuthi ama-LED agcina ukukhanya kwawo nokunemba kombala isikhathi eside, ngokungafani nozakwabo bama-SMD.
IV. Ikhwalithi emnyama futhi ebukhali.
Isakhiwo sobuchwepheshe be-COB asigcini nje ngokuthuthukisa amandla ayo okuphatha nokuvikela okushisayo kodwa futhi sinomthelela kukhwalithi yawo yokukhanyisa. Ngenxa yama-chips e-LED asondelene, i-COB ikhipha ukukhanya okugxile kakhulu futhi okunamandla, okuholela ethunzini elimnyama nemininingwane ecwebezelayo. Lokhu kwenza i-COB ifaneleke kakhulu izinhlelo zokusebenza lapho ukunemba nokugqama okuphezulu kubaluleke kakhulu, njengamamnyuziyamu, imibukiso yezitolo, namagalari. Ukukhanyisa okubukhali okunikezwa ubuchwepheshe be-COB kuthuthukisa ukukhanga okubonakalayo nokucaca kwezikhala ezikhanyisiwe.
Njengoba imboni ye-LED Display iqhubeka nokuthuthuka,Ubuchwepheshe be-COBivele njengenketho emisha nengcono kakhulu yezixazululo zokubonisa i-LED. Izici zayo zobuchwepheshe, ezifana nokukhishwa kokukhanya okufanayo, ukukhishwa kwe-thermal okuphansi, ukuvikeleka okuthuthukisiwe ezicini zemvelo, nokukhanya okubukhali, kuyenza inketho engenakunqotshwa. I-COB ayihlinzeki nje ngokusebenza okuthuthukisiwe nokuhlala isikhathi eside kodwa futhi inikeza ikhwalithi engcono yokubonwayo, ebalulekile ezinhlelweni ezihlukahlukene.
Ngokukhula kwayo nokuthuthuka kwezinqubo zokukhiqiza,Ubuchwepheshe be-COBisitholakala kalula kubathengi nakumabhizinisi emhlabeni jikelele. Ukugona Isibonisi se-COBizixazululo zithembisa ukuletha izinketho zokukhanya ezikhanyayo, ezisebenza kahle kakhulu, nezihlala isikhathi eside kuyilapho sishintsha indlela esikhanyisa ngayo indawo esizungezile.
Isikhathi sokuthumela: Oct-25-2023
