Lub Anatomy ntawm 7-nti TFT LCD Screen
Ib qho ua tiav 7-nti TFT LCD Screen yog ib qho kev sib dhos ntawm ntau txheej txheej, txhua qhov yuav tsum tau kuaj xyuas.
Muab Vaj Huam Sib Luag Layer los ntawm Txheej
TFT substrate: Txheeb xyuas qhov sib xws ntawm Circuit Court thiab transistor tsis xws luag.
Xim lim: Tshuaj xyuas cov xim sib xws thiab cov khoom txawv teb chaws.
Backlight module: Txheeb xyuas rau LED binning, lub teeb qhia tsis xws luag, thiab ci ci sib xws.
Tsav ICs: Kev sim rau cov teeb liab kev ncaj ncees thiab hluav taws xob ua haujlwm.
Txhua txheej muaj qhov tshwj xeeb LCD vaj huam sib luag hom uas yuav tsum tau tswj nruj kom ntseeg tau ntev -lub sij hawm.
Kov Layer Inspection - Qhov Feem Ntau Cov Neeg Yuav Tsis Nco Qab Qhia
Rau7-nti Resistive Touch Screenmodules, txheej kov tsim nyog rau kev tshuaj xyuas ywj pheej. Cov khoom tseem ceeb muaj xws li ITO zaj duab xis uniformity, spacer dot ceev thiab faib, thiab linearity yuam kev. Kov cov qauv yuav tsum tau sau tseg nyias los ntawm cov zaub vaj huam sib luag vim tias kov tsis xws luag feem ntau tsuas yog tshwm sim tom qab kev sib dhos tag nrho thiab tiag tiag - ntiaj teb siv.
Mechanical and Structural Inspection Points
Dimensional kam rau ua yog ib qho tseem ceeb: kev lag luam- qib modules feem ntau tuav ± 0.1mm ntawm cov ncej qhov ntev thiab cov khoom sib txuas, piv rau ± 0.3mm hauv cov khoom siv. Backplate flatness thiab tag nrho cov qauv kev ntseeg ncaj qha cuam tshuam rau kev sib sau ua ke thiab kev co kuj.
Kev lag luam-Txoj kev faib tsis zoo
Dab tsi suav tias yog qhov tsis xws luag thiab dab tsi tsis yog
Cov tsis xws luag xws li ci / tsaus pixels (point defects), kab defects, mura (clouding), Newton rings, thiab xim hloov. Visual (cosmetic) thiab functional (performance) defects raug txiav txim sib txawv. Qhov chaw yog qhov tseem ceeb - qhov tsis xws luag nyob rau hauv lub hauv paus active cheeb tsam ntsib ntau stricter txwv tshaj cov nyob ze ntawm ntug.
AQL Sampling System piav qhia yooj yim
AQL (Acceptable Quality Limit) txhais qhov siab tshaj plaws ntawm qhov tsis xws luag tso cai rau hauv ib pawg qauv. Cov lej AQL qis dua qhia cov kev xav tau zoo dua.
Hom AQL Qib rau LCD Modules
|
AQL qib |
Qauv Loj (rau ~ 500-3200 pcs batch) |
Tso cai tsis xws luag |
Daim ntawv thov |
|
0.65 |
~200 |
2–3 |
Kev Kho Mob / Tub Rog / Kev Nyab Xeeb- tseem ceeb |
|
1.0 |
~125 |
4–5 |
Standard Industrial Control |
|
2.5 |
~80 |
6–7 |
Kev siv dav dav |
|
4.0 |
~50 |
7–8 |
Tus nqi - Cov Kev Pabcuam Tseem Ceeb |
Raws li tus qauv AQL cov lus.
Cheeb tsam tsis zoo
Cov qauv kev lag luam faib thaj chaw ua haujlwm rau hauv nruab nrab thiab ntug cheeb tsam. Center- cheeb tsam tsis xws luag muaj qhov kam rau siab qis dua vim tias lawv cuam tshuam ncaj qha rau cov neeg siv kev lag luam thiab qhov muag pom kev zoo.
Key Optical Parameters
Brightness, Uniformity, thiab Contrast Ratio Standards
Kev lag luam7-nti LCD Xim Screenmodules feem ntau tsom 500-1000 nits. Backlight uniformity yog ntsuas nrog 9-point txoj kev hauv chav tsaus. Kev lees txais cov chav nyob feem ntau ua tiav ntau dua lossis sib npaug ntawm 75-80% kev tsis sib xws; Cov nqi them nqi siab tshaj lossis sib npaug li 85% raws li cov qauv kev lag luam sib xws.
Xim Accuracy - Delta E thiab Xim Gamut
Delta E<3 is generally acceptable for industrial use; <2 is preferred for color-critical applications. NTSC or sRGB coverage should be clearly documented.
Saib lub kaum ntse ntse
Kev sib piv Optical Performance
|
Parameter |
Qib neeg siv |
Qib Industrial |
Qib Kho Mob/Professional |
|
Brightness |
200-400 hli |
500-1000 nits |
800-1500 hli |
|
Backlight Uniformity |
Ntau dua lossis sib npaug li 70% |
Ntau dua lossis sib npaug li 80% |
Ntau dua lossis sib npaug li 85% |
|
Delta E |
<5 |
<3 |
<2 |
|
Qhov sib piv piv |
500:1 |
800:1+ |
1000:1+ |
|
Saib lub kaum ntse ntse (H/V) |
120℃/ 100 degree |
160℃/ 140 degree |
170℃/ 170 degree |
Kov Screen Specific Inspection Standards rau 7-nti Resistive Touch Screen
Linearity thiab raug kuaj
Siv 9-point lossis 25-point calibration test. Kev xav tau ntawm kev lag luam feem ntau yog ± 1mm linearity yuam kev lossis zoo dua nyob rau hauv cheeb tsam nquag.
Activation Force thiab Pressure Uniformity
Kev ua kom muaj zog rau cov ntxaij vab tshaus tiv thaiv feem ntau yog 20-80g nrog kev sib faib siab. Zoo uniformity ncaj qha txhim kho ntev -lub sij hawm durability (lub hom phiaj 35 lab+ nias cycles).
Environmental Stress Test rau Kov Layers
Cov qauv ntsuas suav nrog 85℃/ 85% RH laus rau 96 teev thiab thermal shock (-40℃rau +85℃, 50 cycles). Post-test linearity hloov yuav tsum nyob rau hauv ± 0.5mm rau tsim nyog units.
Hluav taws xob thiab teeb liab Integrity Inspection Standards
Txheeb xyuas lub sijhawm sib tham (RGB/LVDS/MIPI), ESD tiv thaiv (Ntau dua lossis sib npaug rau ± 2kV HBM), cov dej ntws tam sim no, thiab tag nrho grey- nplai linearity. Muaj ntau qhov chaw ua tsis tau zoo taug qab rov qab rau cov teeb meem hluav taws xob uas qhov kev kuaj pom tsis pom.
Environmental thiab Reliability Testing
Kub Cycling thiab Thermal Shock
Dav - cov khoom kub yuav tsum muaj kev ua haujlwm ruaj khov ntawm -30℃rau +80℃nyob rau hauv kev caij tsheb kauj vab.
Vibration thiab Mechanical Shock Testing
MIL-STD-810G kev vibration profiles thiab 1.2m kev ntsuas poob rau cov khoom ntim yog cov kev xav tau rau cov khoom lag luam qib.
Humidity thiab IP Rating Validation
IP65 / IP67 / IP68 kev soj ntsuam ntxiv rau ntsev tsuag (48–96 teev) ua kom muaj kev sib khi ruaj khov raws li -cov xwm txheej hauv ntiaj teb.
Environmental Test Summary
|
Hom kev xeem |
Hom Standard |
Pass Cov Cai |
|
Kub Cycling |
-30℃rau +80 degree, 50-100 cycles |
Tsis muaj functional degradation |
|
High Humidity Aging |
85℃/ 85% RH, 96-168 teev |
Linearity hloov Tsawg dua los yog sib npaug rau ± 0.5mm |
|
Kev vibration / poob siab |
MIL-STD-810G |
Tsis muaj qhov xoob xoob lossis teeb meem teeb meem |
|
Ntsev Txau |
48-96 hnub |
Tsis muaj corrosion cuam tshuam kev ua haujlwm |
Cov ntawv pov thawj dab tsi qhia koj txog lub Chaw Tsim Khoom Zoo
ISO 9001 qhia txog kev tswj hwm kev tswj hwm zoo. CE / RoHS / UL npog kev nyab xeeb thiab kev ua raws li ib puag ncig. IATF 16949 ntxiv cov txheej txheem nruj rau kev tsav tsheb- qib kev siv. IEC 62977 muab cov qauv txheej txheem rau kev kuaj pom.
Yuav Ua Li Cas Txhim Kho Koj Tus Kheej Cov Kev Tswj Xyuas Zoo (IQC) rau LCD Screen
Cov kauj ruam tswv yim los tsim kom muaj txiaj ntsig IQC:
Txhais cov qauv lees paub meej raws li koj qhov kawg -application risk level.
Tsim ib daim ntawv teev cov ncauj lus kom ntxaws txog cov tsos, kev ua haujlwm kho qhov muag, kev ua haujlwm kov, hluav taws xob tsis zoo, thiab ntim khoom.
Sib tham txog Daim Ntawv Pom Zoo Zoo nrog tus neeg muag khoom ua ntej pib tsim khoom.
Txiav txim siab thaum twg thib peb- kev tshuaj xyuas tog neeg raug lees paub (thawj pawg, cov haujlwm tseem ceeb).
Taug qab cov ntaub ntawv kev ua haujlwm ntawm thaj chaw thiab txuas ntxiv kho cov qauv nrog lub Hoobkas.
LCD npo Hoobkas tshuaj xyuas thiab TFT cov chaw tsim khoom lag luam zoo dhau los ua kev ntseeg siab tsuas yog thaum koj koom nrog ntau dua li tsuas yog tso siab rau cov ntawv tshaj tawm. Cov txheej txheem IQC yooj yim tuaj yeem ntes cov teeb meem feem ntau ua ntej lawv mus txog koj cov kab ntau lawm.
Cov chij liab thaum ntsuas 7-nti TFT LCD Screen Chaw Tsim Tshuaj
Saib xyuas cov cim ceeb toom no:
Tsis tuaj yeem lossis yuav tsis muab cov qauv tshuaj ntsuam xyuas thiab qib AQL.
Cov qauv kev ua tau zoo txawv txav los ntawm kev thov ntau lawm.
Cov ntawv pov thawj tsis tuaj yeem txheeb xyuas nws tus kheej.
Tiv thaiv kev tshawb xyuas lub Hoobkas lossis thib peb -kev tshuaj xyuas tog.
Hla kev laus los yog kev cia siab rau kev ntsuam xyuas thaum nyob rau hauv kev xa khoom.
Muab kev hloov pauv tsuas yog tsis muaj hauv paus- ua rau tsis ua tiav kev soj ntsuam.
Ib lub chaw tsim khoom loj zoo siab txais tos koj daim ntawv tshuaj ntsuam xyuas thiab yog pob tshab txog lawv cov txheej txheem.
Cov kev xav tsis zoo hais txog kev tshuaj ntsuam xyuas LCD
"Passed Hoobkas daim ntawv tshaj tawm" txhais tau tias txhua lub vijtsam tau sim tag nrho - Feem ntau cov khoom siv AQL sampling es tsis yog 100% tshuaj xyuas.
Tsis tuag pixels sib npaug zoo zoo - Uniformity, linearity, ntseeg tau, thiab kov kev ua tau zoo feem ntau tseem ceeb dua.
Cov ntawv pov thawj ntau dua txhais tau tias zoo dua - Cov ntawv pov thawj yuav tsum tau txais kev txhawb nqa los ntawm cov txheej txheem tiag tiag.
Cov ntxaij vab tshaus pheej yig dua ib txwm hla kev soj ntsuam nruj - Cov chaw tsim khoom siv tau zoo tuaj yeem xa cov khoom zoo ntawm tus nqi sib tw.
Ib qho piv txwv zoo tau lees paub ntau qhov sib xws - Kev saib xyuas tsis tu ncua thiab Daim Ntawv Pom Zoo Zoo yog qhov tseem ceeb.
FAQ
Q: Tus qauv kev lag luam rau cov pixels tuag ntawm 7-nti TFT LCD npo yog dab tsi?
A: Feem ntau cov neeg yuav khoom lag luam lees txais xoom ci pixels thiab txwv tsis pub tsaus nti pixels (feem ntau 2-5 qhov siab tshaj plaws nyob ntawm thaj tsam thiab AQL).
Q: Dab tsi AQL qib kuv yuav tsum tau qhia rau kev lag luam LCD npo xaj?
A: AQL 1.0 yog ib txwm siv rau kev siv hauv kev lag luam; AQL 0.65 rau kev kho mob lossis kev nyab xeeb - daim ntawv thov tseem ceeb.
Q: Kuv tuaj yeem txheeb xyuas qhov teeb pom kev zoo li cas ntawm 7-nti LCD xim npo?
A: Siv 9- taw tes ntsuas txoj hauv kev hauv chav tsaus thiab suav qhov tsawg kawg nkaus - rau qhov siab tshaj qhov ci piv.
Q: Dab tsi yog qhov txawv ntawm IQC thiab OQC hauv LCD tsim?
A: OQC yog lub Hoobkas qhov kev kuaj xyuas zoo; IQC yog koj cov ntaub ntawv pov thawj tom qab tau txais.
Q: Puas yog 7-nti Resistive Touch Screen xav tau kev tshuaj xyuas zoo los ntawm cov vaj huam sib luag?
A: Yog - kov linearity, activation force, thiab durability yuav tsum muaj cov qauv tshwj xeeb.
Q: Cov ntawv pov thawj dab tsi yuav tsum muaj kev ntseeg siab LCD npo chaw tsim khoom tuav?
A: ISO 9001 raws li hauv paus; CE/RoHS/UL ntxiv rau daim ntawv thov- cov ntawv tshwj xeeb (IEC 62977, IATF 16949, thiab lwm yam).
Q: Kuv yuav ua li cas thiaj paub yog tias lub Hoobkas daim ntawv tshaj tawm kev xeem zoo yog qhov tseeb?
A: Thov cov ntaub ntawv nyoos, batch traceability, thiab ua qhov thib peb -qhov chaw pov thawj ntawm cov khoom xa tuaj.
Q: Qhov kev ntsuam xyuas ib puag ncig twg yuav tsum muaj 7-nti TFT LCD screen dhau rau kev siv sab nraum zoov?
A: Kub caij tsheb kauj vab, siab -cov av noo, tshuaj tsuag ntsev, kev co, thiab IP65+ validation.
Kev ua tau zoo tsis yog ib qho - cov lus cog tseg ntawm tus neeg muag khoom tab sis ib txheej txheej txheem sib koom ua ke thiab txheeb xyuas ntawm tus neeg yuav khoom thiab tus muag khoom. Los ntawm kev nkag siab txog kev tswj hwm LCD zoo, xav tau cov ntaub ntawv meej meej, thiab siv IQC yooj yim, koj txo qhov kev pheej hmoo ntawm kev yuav khoom thiab tiv thaiv koj cov haujlwm los ntawm kev xav tsis thoob.
Npaj txhij los tsa lub bar zoo rau koj7-nti TFT LCD npoxaj? Hu rau lub chaw tsim khoom muaj koob npe hnub no. Thov lawv cov qauv kev soj ntsuam kom ntxaws, cov qauv ntsuas cov ntaub ntawv nrog cov ntaub ntawv nyoos, thiab sib tham txog Daim Ntawv Pom Zoo Zoo raws li koj xav tau.
