Ndi chiyaniMa LED a Chip-on-Board ("COB")?
Chip-on-Board kapena "COB" imatanthawuza kuyika kwa chipangizo chopanda kanthu cha LED polumikizana mwachindunji ndi gawo lapansi (monga silicon carbide kapena safiro) kuti apange masanjidwe a LED. Ma LED a COB ali ndi maubwino angapo kuposa matekinoloje akale a LED, monga ma LED a Surface Mounted Device ("SMD") kapena ma LED a Dual In-line Package ("DIP"). Makamaka, ukadaulo wa COB umalola kuti pakhale kuchuluka kwapang'onopang'ono kwamtundu wa LED, kapena zomwe mainjiniya owunikira amazitcha kuti "lumen density". Mwachitsanzo, kugwiritsa ntchito ukadaulo wa COB LED pa 10mm x 10mm square array kumabweretsa ma LED ochulukirapo ka 38 poyerekeza ndiukadaulo wa DIP LED ndi ma LED ochulukirapo ka 8.5 poyerekeza ndiChithunzi cha SMD LEDukadaulo (onani chithunzi pansipa). Izi zimapangitsa kuti kuwala kukhale kolimba kwambiri komanso kufanana kwakukulu. Kapenanso, kugwiritsa ntchito ukadaulo wa COB LED kumatha kuchepetsa kwambiri kupondaponda ndi kugwiritsa ntchito mphamvu zamagulu amtundu wa LED ndikusunga kuwala kosalekeza. Mwachitsanzo, mtundu wa 500 lumen COB LED ukhoza kukhala wocheperako nthawi zambiri ndipo umawononga mphamvu zochepa kuposa 500 lumen SMD kapena DIP LED Array.