Txij li thaum COB tsis muaj cov kab hlau lead ntawm IC pob, tab sis yog hloov los ntawm PCB, qhov tsim ntawm PCB pads tseem ceeb heev, thiab Finish tsuas tuaj yeem siv electroplated kub los yog ENIG, txwv tsis pub kub hlau los yog txhuas hlau, los yog txawm tias qhov tseeb tooj liab xov hlau. yuav muaj teeb meem uas ntaus tsis tau. PCB Design Cov kev xav tau rau COB 1. Kev kho deg ntawm lub PCB board yuav tsum yog kub electroplating los yog ENIG, thiab nws yog ib tug me ntsis thicker dua kub plating txheej ntawm lub general PCB board, thiaj li yuav muab lub zog yuav tsum tau rau Die Bonding thiab tsim ib tug kub-aluminium. los yog kub-kub tag nrho kub. 2. Nyob rau hauv txoj hauj lwm xaim ntawm lub ncoo Circuit Court sab nraum Die Pad ntawm COB, sim xav txog tias qhov ntev ntawm txhua qhov vuam hlau muaj qhov ntev ruaj khov, uas yog hais tias, qhov kev ncua deb ntawm qhov sib koom ua ke ntawm wafer mus rau PCB. pad yuav tsum zoo ib yam li qhov ua tau.Txoj hauj lwm ntawm txhua txoj hlua khi tuaj yeem tswj tau kom txo tau qhov teeb meem ntawm luv luv Circuit Court thaum cov xov hlau sib txuas.Yog li ntawd, lub ncoo tsim nrog kab pheeb ces kaum tsis tau raws li qhov yuav tsum tau ua.Nws tau pom tias qhov sib nrug ntawm PCB tuaj yeem ua kom luv kom tshem tawm cov tsos ntawm kab pheeb ces kaum.Nws kuj tseem tuaj yeem tsim cov elliptical pad txoj haujlwm kom sib npaug ntawm cov txheeb ze ntawm cov xov hlau. 3. Nws raug pom zoo tias COB wafer yuav tsum muaj tsawg kawg yog ob lub ntsiab lus.Nws yog qhov zoo tshaj plaws kom tsis txhob siv cov ntsiab lus ntawm qhov chaw ncig ntawm cov tsoos SMT, tab sis yuav tsum siv cov ntsiab lus sib txawv ntawm qhov chaw, vim tias Wire Bonding (hlau bonding) tshuab ua haujlwm tsis siv neeg Thaum muab tso rau, qhov chaw ua haujlwm yog ua los ntawm txoj kab ncaj nraim. .Kuv xav tias qhov no yog vim tias tsis muaj qhov chaw nyob ntawm qhov chaw ntawm cov kab hlau ua ib txwm muaj, tab sis tsuas yog ib lub thav duab ncaj nraim.Tej zaum qee qhov Wire Bonding tshuab tsis zoo ib yam.Nws raug nquahu kom ua ntej xa mus rau kev ua haujlwm ntawm lub tshuab ua kom tsim tau.
4, qhov loj ntawm qhov tuag ncoo ntawm PCB yuav tsum yog me ntsis loj dua qhov tseeb wafer, uas tuaj yeem txwv qhov offset thaum tso lub wafer, thiab tseem tiv thaiv lub wafer los ntawm kev tig ntau dhau ntawm lub ncoo tuag.Nws raug pom zoo tias wafer pads ntawm txhua sab yog 0.25 ~ 0.3mm loj dua qhov tseeb wafer.
5. Nws yog qhov zoo tshaj kom tsis txhob muaj los ntawm qhov hauv cheeb tsam uas COB yuav tsum tau ntim cov kua nplaum.Yog tias nws tsis tuaj yeem zam tau, lub Hoobkas PCB yuav tsum tau ntsaws tag nrho cov no los ntawm qhov.Lub hom phiaj yog los tiv thaiv lub qhov los ntawm qhov nkag mus rau hauv PCB thaum lub sij hawm Epoxy dispensing.ntawm lwm sab, ua rau muaj teeb meem tsis tsim nyog. 6. Nws raug nquahu kom luam Silkscreen logo rau ntawm thaj chaw uas yuav tsum tau muab xa tawm, uas tuaj yeem ua kom yooj yim rau kev xa tawm thiab kev tswj cov khoom siv dispensing.
Yog tias koj muaj lus nug lossis lus nug, thov hu rau peb! Ntawm no .
Paub ntau ntxiv txog peb! Ntawm no.
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