Daim ntawv qhia tshwj xeeb qhia koj tias LED zaub cog lus li cas - pixel pitch, ci ntsa iab, refresh npaum li cas. Nws tsis tshua pom tias cov lus cog tseg ntawd raug tsim li cas. Nruab nrab ntawm ib lub reel ntawm LED teeb thiab ib qho screen npaj rau nkoj zaum ntawm ntau tshaj ib lub kaum os cov kauj ruam, thiab qhov zoo yog txiav txim siab ntev ua ntej lub vaj huam sib luag yog powered rau thawj zaug. Kab lus no taug kev los ntawm cov txheej txheem tsim khoom, yog li cov neeg yuav khoom tuaj yeem nyeem ntawm cov kab ntawm cov lus hais.
1. Kev Tswj Xyuas Zoo
Kev tsim khoom pib ntawm lub tsev khaws khoom, tsis yog cov kab sib dhos. LED teeb, tsav ICs, PCBs, daim npog qhov ncauj, cov khoom txuas thiab cov khoom siv hluav taws xob raug kuaj xyuas thiab kuaj xyuas raws li kev pom zoo. Cov teeb tsim nyog tau txais kev saib xyuas tshwj xeeb: qhov ci ntsa iab, wavelength thiab qhov hluav taws xob rau pem hauv ntej tau rov ntsuas dua thaum tuaj txog, vim tias cov khoom sib xyaw los ntawm ntau ntau ntau yog ib qho ntawm feem ntau ua rau cov xim tsis sib xws thoob plaws lub vijtsam tiav. Ib pawg uas tsis tuaj yeem kuaj xyuas yeej tsis ncav cuag txoj kab - kev ncua me me uas tiv thaiv cov nqi loj dua tom qab.
2. SMT Sib dhos
Lub plawv ntawm LED zaub ntau lawm yog nto-mount technology, feem ntau hu ua SMT. Nws khiav hauv peb theem:
- Solder paste luam ntawv- lub laser-txiav stencil siv muab tshuaj txhuam rau cov ntaub qhwv ntawm lub PCB liab qab. Print alignment thiab paste ntim txiav txim seb cov pob qij txha yuav yog cov khoom los yog hollow.
- Xaiv-thiab-qhov chaw- cov tshuab high-speed txoj hauj lwm LED teeb, tsav tsheb ICs thiab cov khoom siv passive. Ntawm qhov chaw zoo hauv qab P2, qhov tseeb qhov kev tso kawm ntawm ob peb lub kaum microns txiav txim siab seb lub teeb puas zoo nyob hauv txoj kab nrog nws cov neeg nyob ze.
- Reflow soldering- lub rooj tsavxwm dhau los ntawm qhov cub uas nws qhov kub thiab txias tau yaj cov muab tshuaj txhuam thiab tsim cov pob qij txha. Ib qho profile tsis raug ua rau cov pob qij txha txias lossis cov khoom tombstoned.
Automated optical inspection (AOI) ua raws li, tshuaj xyuas txhua lub rooj tsavxwm kom ploj, tsis zoo los yog cov khoom siv tsis zoo.
3. Module Assembly
Ib qho kev sim PCB dhau los ua ib qho module tom qab ob peb ntxiv. Lub npog ntsej muag - yas lossis lub ntsej muag dub - yog haum tom ntej; nws txhais lub kaum sab xis, qhov sib piv thiab qhov chaw flatness. Cov khoom siv sab nraum zoov tau txais cov kua nplaum tsis muaj dej ntawm lub ntsej muag thiab lub rooj tsavxwm, thaum cov qauv uas xav tau kev tiv thaiv ntxiv tuaj yeem tau txais GOB encapsulation, pob tshab gel npog tag nrho lub ntsej muag. Txhua lub module raug ntsuas: yog tias LED zaum txawm tias ob peb puas ntawm ib millimeter siab dua lossis qis dua nws cov neeg nyob ze, lub vijtsam tiav yuav pom cov teeb pom kev zoo uas tshwm sim saum npoo av.
4. Module-Level Testing
Ua ntej nkag mus rau hauv lub txee, txhua qhov module tau teeb nrog cov qauv kuaj liab, ntsuab, xiav thiab dawb thiab thaij duab los ntawm cov cuab yeej ntsuas ntsuas uas ntsuas qhov ci thiab chromaticity. Cov chav nyob sab nraud kam rau ua tau rov ua dua lossis muab faib ua cov khoom sib txuam. Qhov kev tshuaj ntsuam ntxov no ua rau qhov kawg, kev ntsuas dav dav ntawm lub vijtsam yooj yim dua.
5. Lub Rooj Sib Tham Rooj Sib Tham
Modules yog mounted rau hauv thav duab - tuag-cam khwb cia txhuas rau cov khoom xauj tsev, steel los yog extruded aluminium rau taag installation. Machining precision tseem ceeb ntawm no: rooj zaum qhov chaw yuav tsum tiaj tus kom cov modules sib dhos tsis pom seams. Nyob rau hauv lub enclosure, cov khoom siv fais fab, txais daim npav, hub boards thiab cable looms raug ntsia thiab xa mus. Txhua qhov txuas raug kaw, thiab cov xaim hluav taws xob yog qhov loj me raws li qhov nws yuav nqa.
6. Kev Xeem Kev Laus
Qhov ntev tshaj plaws thiab tsawg tshaj plaws glamorous kauj ruam. Cov khoom sib dhos tau txuas nrog rau hauv cov arrays tag nrho thiab ua haujlwm tsis tu ncua - feem ntau 48 txog 72 teev ntawm kev ua haujlwm ci ntsa iab. Thaum lub sij hawm no engineers saib rau cov tuag los yog flickering teeb tshwm sim thaum kub nce, brightness drift ntawm modules raws li cov Cheebtsam sov li, tsis ruaj tsis khov fais fab mov, thiab tswj cov teeb liab yuam kev. Ntau qhov kev ua tsis tiav uas yuav tshwm sim hauv thawj lub lis piam ntawm kev ua haujlwm tau ntws tawm ntawm no; ib qho screen uas dhau kev laus tawm ntawm lub Hoobkas nrog nws cov kev tsis zoo ntawm lub neej thaum ntxov twb raug tshem tawm.
7. Thaum kawg QC, Calibration thiab Packing
Lub rooj vag kawg suav nrog ntau qhov kev kuaj xyuas: kev ntsuas qhov tiaj tus thoob plaws lub ntsej muag sib sau ua ke, taw tes-los ntawm-taw tes xim thiab kho qhov ci ci ntawm lub vijtsam tiav, kev sim ua haujlwm ntawm txhua lub txee, thiab - rau cov qauv sab nraum zoov - kev tshuaj ntsuam dej ntawm cov seams. Cov ntaub ntawv Calibration tau txais kev cawmdim thiab xa nrog cov khoom kom cov khoom sib dhos ntawm lub xaib rov qab los ntawm lub Hoobkas-tuned duab. Kev ntim khoom sib txawv ntawm cov khoom lag luam: cov khoom siv ruaj ruaj taug kev hauv cov ntoo ua npuas ncauj, thaum cov chav tsev xauj nkag mus rau hauv cov rooj sib tham dav hlau ua rau rov ua dua.
Cov neeg yuav khoom yuav tsum nug dab tsi
Ob qhov kev qhia tuaj yeem qhia qhov tshwj xeeb zoo ib yam tseem coj txawv txawv tom qab ib xyoos ntawm kev pabcuam; txheej txheem kev qhuab qhia feem ntau yog vim li cas. Thaum sib piv cov neeg muab khoom, qee cov lus nug ncaj qha qhia ntau dua li cov ntaub ntawv:
- Puas yog SMT ua tiav hauv tsev lossis kev cog lus sub?
- Ntev npaum li cas qhov kev kuaj laus, thiab qhov ci ntsa iab yog dab tsi?
- Puas yog point-by-point calibration ua rau ntawm lub vijtsam sib dhos, lossis tsuas yog ntawm cov modules?
- Yuav ua li cas LED bins matched ntawm ntau lawm batch - tseem ceeb rau yav tom ntej spare qhov chaw los yog expansions?
- Yuav ua li cas yog lub teeb tsis ua hauj lwm thaum lub sij hawm kev laus: kho, rov binning, los yog seem?
Kaum feeb siv rau cov lus nug no - lossis mus ntsib lub Hoobkas - qhia koj ntau ntxiv txog qhov screen koj yuav tau txais tiag tiag tshaj li ib daim ntawv qhia.