Ua ntej, nws yog ib qho tseem ceeb kom nkag siab txog cov khoom siv ntsia saum npoo (SMD) LEDs. Lawv yog cov LEDs siv ntau tshaj plaws tam sim no. Vim lawv qhov kev hloov pauv tau yooj yim, cov chips LED tau sib xyaw ua ke nrog cov laug cam luam tawm thiab siv dav txawm tias hauv cov teeb ceeb toom xov tooj ntawm tes. Ib qho ntawm cov yam ntxwv tseem ceeb tshaj plaws ntawm SMD LED chips yog tus lej ntawm kev sib txuas thiab diodes.
Ntawm ib lub SMD LED chip, muaj peev xwm muaj ntau tshaj ob qhov kev sib txuas. Muaj txog li peb lub diodes nrog cov circuits ywj pheej nyob rau ntawm ib lub chip. Txhua lub circuit muaj ib lub anode thiab ib lub cathode, ua rau muaj 2, 4, lossis 6 qhov kev sib txuas ntawm lub chip.
Qhov sib txawv ntawm COB LEDs thiab SMD LEDs
Ntawm ib lub SMD LED chip, muaj peev xwm muaj txog li peb lub diodes, txhua lub muaj nws lub voj voog. Txhua lub voj voog hauv lub chip zoo li no muaj cathode thiab anode, ua rau muaj 2, 4, lossis 6 qhov kev sib txuas. COB chips feem ntau muaj cuaj lossis ntau dua diodes. Tsis tas li ntawd, COB chips muaj ob qhov kev sib txuas thiab ib lub voj voog tsis hais tus lej ntawm cov diodes. Vim yog qhov kev tsim qauv yooj yim no, COB LED teeb muaj qhov zoo li vaj huam sib luag, thaum SMD LED teeb zoo li ib pawg ntawm cov teeb me me.
Cov diodes liab, ntsuab, thiab xiav tuaj yeem muaj nyob rau ntawm SMD LED chip. Los ntawm kev hloov pauv cov theem tso zis ntawm peb lub diodes, koj tuaj yeem tsim txhua yam xim. Ntawm lub teeb COB LED, txawm li cas los xij, tsuas muaj ob qhov sib cuag thiab lub voj voog. Nws tsis tuaj yeem ua lub teeb hloov xim lossis lub teeb nrog lawv. Kev kho ntau-channel yog qhov yuav tsum tau ua kom tau txais cov nyhuv hloov xim. Yog li ntawd, COB LED teeb ua haujlwm zoo hauv cov ntawv thov uas xav tau ib qho xim es tsis yog ntau xim.
Qhov ntau ntawm qhov kaj ntawm SMD chips paub zoo tias yog 50 txog 100 lumens ib watt. COB paub zoo txog nws qhov kev ua haujlwm thermal siab thiab lumen ib watt piv. Yog tias COB chip muaj tsawg kawg 80 lumens ib watt, nws tuaj yeem tso tawm ntau lumens nrog hluav taws xob tsawg dua. Nws tuaj yeem siv rau hauv ntau hom teeb thiab khoom siv sib txawv, xws li lub xov tooj ntawm tes flash lossis cov koob yees duab taw tes thiab tua.
Ntxiv rau qhov no, SMD LED chips xav tau lub zog sab nraud me dua, thaum COB LED chips xav tau lub zog sab nraud loj dua.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-18-2024