Ib, Cov khoom siv thiab cov qauv fragility ntawm LCD nrog cov lej tawg
Cov qauv tseem ceeb ntawm qhov tawg code LCD muaj ob lub iav substrates, cov kua siv lead ua kua txheej, polarizer, thiab electrodes (ITO). Cov polarizer npog ntawm nws qhov chaw feem ntau yog ua los ntawm cov khoom yas (xws li PVA polyvinyl cawv), thiab cov electrodes yog ua los ntawm indium tin oxide (ITO) zaj duab xis. Cov qauv no ntsib peb qhov kev pheej hmoo loj hauv roj av thiab tshuaj lom neeg corrosion scenarios:
Polarizing zaj duab xis corrosion: Yas polarizing zaj duab xis tau yooj yim nkag los ntawm roj thiab hws stains, ua rau txo qis ntawm lub teeb xa hluav taws xob. Kev tiv tauj ntev yuav ua rau "cov duab seem" lossis cov duab tsis pom tseeb. Piv txwv li, tus kws saib xyuas kev kho mob tau ntsib cov xim daj ntawm cov yeeb yaj kiab polarizing thiab 50% txo qis hauv qhov sib piv hauv 3 lub hlis vim tsis tuaj yeem ntxuav cov roj stains hauv lub sijhawm.
Electrochemical corrosion ntawm electrodes: Thaum ITO electrodes tuaj rau hauv kev sib cuag nrog electrolytes (xws li cov tshuaj ntxuav, tshuaj tsuag ntsev) nyob rau hauv ib puag ncig ntub, lawv tuaj yeem tsim cov nyhuv microbattery, uas ua rau electrode puas los yog tso tawm kev sib txuas. Tom qab siv cov cuab yeej tswj kev lag luam hauv thaj chaw ntug dej hiav txwv rau ib xyoos, qhov qhib hluav taws xob ntawm ITO electrode tau nce mus rau 12% vim yog ntsev tsuag corrosion.
Sealing kua nplaum tsis ua haujlwm: Yog tias cov epoxy resin lossis silicone sealing kua nplaum ntawm ntug ntawm LCD yog yaj los ntawm cov kuab tshuaj organic (xws li cawv, acetone), nws yuav ua rau cov kua siv lead ua kua los yog dej vapor infiltration. Vim yog siv cov kuab tshuaj raws li cov tshuaj ntxuav hauv lub tsheb dashboard project, lub sealant swelled thiab cov kua siv lead ua kua txheej paug tus nqi mus txog 8%.
2, Kev lag luam tiv thaiv technology thiab cov qauv
1. Cov khoom siv hloov kho tshuab
Polarizing zaj duab xis tiv thaiv: Siv tshuaj tiv thaiv TAC (cellulose triacetate) substrate es tsis txhob ntawm PVA ib txwm, thiab txheej nrog fluoride hydrophobic txheej. Piv txwv li, "Anti Oil" polarizer launched los ntawm ib tug neeg muag khoom yuav ua rau kom lub kaum sab xis ntawm cov roj stains mus rau 110℃thiab txo cov roj adhesion.
Electrode tiv thaiv: Deposition ntawm silicon dioxide (SiO ₂) los yog polyimide (PI) rwb thaiv tsev txheej nyob rau saum npoo ntawm ITO los thaiv electrolyte tiv tauj. Ib qho COG txheej txheem code rhuav LCD txo cov electrode corrosion ntawm 15% mus rau 0.5% los ntawm PI txheej.
Txhim kho cov sealant: siv cov hloov kho silicone lossis epoxy resin, ntxiv nano fillers (xws li SiO ₂) los txhim kho cov kuab tshuaj tiv thaiv. Tom qab siv acetone resistant sealant nyob rau hauv ib qhov project automotive twj tso kua mis, lub compatibility xeem pass tus nqi ntawm tus neeg saib xyuas tu tau nce los ntawm 60% mus rau 98%.
2. Kev tsim kho kom zoo dua qub
Kev tiv thaiv ntug: Ntxiv cov ciam teb los yog sealant ntawm cov npoo ntawm LCD kom tiv thaiv cov kua los ntawm kev nkag mus rau hauv. Ib qho cuab yeej sab nraum zoov txais yuav "U-} zoo li" kaw qauv thiab tau dhau IP67 pov thawj tiv thaiv.
Kev kho deg: AG (frosted) lossis AR (anti reflective) kev kho yog siv rau lub polarizer kom txo tau cov ntiv tes seem. Ib hom khoom siv hluav taws xob siv hluav taws xob tau txuas ntxiv lub voj voog ntxuav lub vijtsam los ntawm ib hnub rau ib zaug hauv ib lub lis piam los ntawm AG thev naus laus zis.
3. Cov qauv ntsuas kev lag luam
Kev ntsuas roj: Raws li IEC 60068-2-54 tus qauv, siv cov roj simulated (xws li cov roj ntxhia) rau saum npoo ntawm LCD thiab muab tso rau hauv 60℃/ 85% RH ib puag ncig rau 72 teev. Qhov kev ntsuam xyuas pom qhov sib txawv ntawm qhov sib txawv tsawg dua lossis sib npaug li 10%.
Cov tshuaj tiv thaiv corrosion: Xa mus rau MIL-STD-810G txoj kev, nthuav tawm LCD rau ntsev tsuag (5% NaCl tov), tshuaj ntxuav (xws li isopropanol), los yog cov roj nplua nyeem los ntsuas cov electrode tsis kam hloov tus nqi.
Life Acceleration Test: Simulate ib puag ncig huab cua los ntawm HALT (High Acceleration Life Test) txhawm rau txheeb xyuas qhov ua tau zoo ntawm kev tiv thaiv. Ib qho chaw tsim khoom siv kho mob tau dhau qhov kev ntsuas kub thiab txias los ntawm -40℃mus rau 85℃kom ntseeg tau tias LCD tsis muaj corrosion tsis ua haujlwm thaum nws lub neej 10 xyoo.
3, Cov ntaub ntawv thov raug
1. Cov cuab yeej tswj kev lag luam
Cov cuab yeej ntawm ib lub tuam txhab petrochemical tau raug rau cov roj pos huab ib puag ncig tau ntev, thiab tus thawj tawg code LCD zaub yog qhov muag plooj vim roj nkag. Tom qab hloov mus rau polarizing films nrog hydrophobic coatings, lub sij hawm ntxuav cov roj stains raug txo los ntawm 80% thiab cov nqi kho mob txo los ntawm 60%.
2. Automotive Electronics
Lub dashboard ntawm ib lub tsheb tshiab lub zog yuav tsum dhau qhov kev xeem "tshuaj lom neeg" hauv ISO 16750-3 tus qauv (tshwj xeeb rau roj av, dej nres, thiab lwm yam). Los ntawm kev siv cov kuab tshuaj resistant sealant thiab PI electrode tiv thaiv txheej, cov qauv qhia tsis muaj corrosion los yog to tom qab 48 teev ntawm kev sim.
3. Cov khoom siv kho mob
Tus saib xyuas portable yuav tsum ua kom tau raws li IP54 tiv thaiv qib. Tus qauv tsim muaj qhov tsis ua tiav txog li 5% vim tias cov yeeb yaj kiab polarizing tau yooj yim corroded los ntawm cov tshuaj tua kab mob. Tom qab kev ua kom zoo, TAC substrate thiab fluoride txheej tau siv, thiab qhov kev ua tau zoo tsis muaj degradation tom qab 1000 kev kuaj dej cawv so.
