OLED npo tuaj yeem "luam tawm" poob nthav. Cov kua siv lead ua kua nruab nrab yog qhov siab ntawm kev ntshai. OLED panels tuaj yeem tsim los ntawm "inkjet luam ntawv"? Koj nyeem qhov yog, yog tias OLED xav kov yeej lub lag luam tseem ceeb, nws yuav tsum tau tso siab rau cov thev naus laus zis no.
Thaum kawg ntawm lub Kaum Ib Hlis 2018, BOE tshaj tawm txoj kev vam meej ntawm Tuam Tshoj thawj 55-inch 4K OLED zaub siv inkjet luam ntawv thev naus laus zis, uas xav tias yuav rhuav tshem cov tuam txhab Kaus Lim Kauslim hauv thaj tsam ntawm OLEDs loj.
Lub ntsiab OLED ntau lawm feem ntau siv cov txheej txheem evaporation. Cov tshuab no tsuas yog ntsib teeb meem ntawm kev tawm los thiab nqi. Piv nrog rau cov txheej txheem evaporation, OLED vaj huam sib luag tsim cov txheej txheem ntawm inkjet luam ntawv thev naus laus zis yog ib txoj hauv kev ua tau los txo cov nqi tsim khoom.
Qhov tseeb, ntau lub tuam txhab lag luam hauv tsev thiab txawv teb chaws tau pib tsim cov tshuab luam ntawv inkjet thaum ntxov, suav nrog Samsung, LG, BOE, CSOT thiab lwm yam. Raws li thaum xaus ntawm xyoo tas los, JOLED, tus koom tes ntawm Nyiv Display Corporation (JDI), tshaj tawm tias 21.6-inch OLED vaj huam sib luag tsim los ntawm lub ntiaj teb thawj "txoj kev tsim khoom" tau pib muab, thiab nyob rau hauv thaum ntxov hnub lawv tau siv tsuas yog rau cov khoom siv kho mob.
Dab tsi yog qhov txawv ntawm vapor deposition thiab inkjet luam ntawv?
Lub teeb-emitting lub hauv paus ntsiab lus ntawm OLED yog ua ib txheej ntawm lub teeb-emitting khoom nrog ib tug tuab ntawm kaum ntawm nanometers ntawm ITO iav, uas yog cov neeg feem ntau hu ua tus kheej-luminous khoom ntawm OLED screen pixels. Muaj cov hlau electrode saum lub teeb-emitting txheej. Cov electrode yog siv nrog voltage thiab lub teeb-emitting txheej tsim lub teeb hluav taws xob; electrons thiab qhov yog txhaj los ntawm Yin thiab Yang qib. Cov tshuaj tua hluav taws xob thiab qhov yog thauj mus rau hauv cov txheej txheem organic thiab rov ua dua nyob rau hauv lub teeb-emitting txheej kom excite molecules nyob rau hauv lub teeb-emitting txheej los tsim singlet excitons. Lub singlet exciton hluav taws xob decays thiab emits lub teeb. Yog li tsim ib pixel.
Nqus evaporation
Txoj kev siv ntau tshaj plaws rau kev tsim cov txheej txheem organic yog "evaporation." evaporation zoo ib yam li evaporation. Thaum cov dej boiled nyob rau hauv lub lauj kaub, lub chav ua raws li cov lwg ntawm lub hau ntawm lub lauj kaub. Qhov txawv yog tias evaporation siv cov khoom siv organic hloov dej, thiab cua sov yog ua nyob rau hauv lub nqus tsev vacuum es tsis txhob nyob rau hauv ib txwm atmospheric siab.
evaporation yuav tsum xub ua nyob rau hauv lub tshuab nqus tsev, uas yog, nyob rau hauv ib tug ntaus ntawv hu ua lub nqus tsev vacuum chamber. Lub tuam txhab tsim khoom loj LTPS backplane yog xim qauv nyob rau hauv lub tshuab nqus tsev chamber.
Thaum LTPS yog tsim thiab muab tso rau hauv lub tshuab nqus tsev vacuum chamber, ces ib tug precision hlau daim npog qhov ncauj (FMM) muab tso rau hauv lub LTPS substrate. Lub npog ntsej muag yog ib qho khoom siv nrog qhov me me kos rau ntawm daim hlau nyias, yog li thaum cov khoom siv organic yog vapor-deposited, nws tsuas tuaj yeem tso rau hauv ib txoj haujlwm tshwj xeeb. Thaum lub npog ntsej muag npaj txhij, tso qhov chaw evaporation nyob rau hauv nws thiab ua kom sov rau qhov kub thiab txias. Thaum lub cua sov pib, cov organic molecules me me nyob rau hauv lub molecular chav tsev dhau los ntawm lub npog ntsej muag thiab tso rau qhov xav tau txoj hauj lwm.
inkjet luam ntawv
Inkjet luam ntawv thev naus laus zis zoo li inkjet luam ntawv ntawm daim ntawv, txhaj tsawg dua kaum pl (ib trillionth ntawm ib liter) ntawm OLED number case rau loj ntau lawm ntawm cov ntxaij vab tshaus. Piv nrog rau cov vapor deposition txoj kev uas vaporizes organic teeb meem nyob rau hauv lub nqus tsev vacuum, inkjet luam ntawv tshuab muaj qhov zoo ntawm kev muaj peev xwm tsim nyob rau hauv ib txwm siab, tsawg number case dripping mus rau sab nraum lub substrate, thiab kev txhim kho cov efficiency ntawm cov khoom siv.
Txhawm rau ua inkjet luam ntawv, OLED cov ntaub ntawv yuav tsum tau yaj hauv cov kuab tshuaj ua ntej ua tus cwj mem. Tus cwj mem uas muaj cov khoom siv OLED dhau los ntawm cov nozzles ntawm lub taub hau inkjet thiab luam tawm ntawm cov teeb meem ntawm lub substrate. Tom qab ntawd, cov kuab tshuaj raug tshem tawm los ntawm kev ziab, thiab OLED cov ntaub ntawv luam tawm tuaj yeem ua tiav. Inkjet luam ntawv thev naus laus zis tuaj yeem siv rau hauv ntau hom kev tsim cov khoom lag luam, thiab nws daim ntawv thov kev cia siab nyob rau hauv qhov loj-loj OLEDs yog qhov zoo siab tshwj xeeb. Qhov no yog vim hais tias lub substrate yuav tsum tau ua kom loj-loj zaub panels yuav tsum siab tshaj lub yim tiam. Piv nrog rau txoj kev nqus evaporation, txoj kev inkjet muaj qhov zoo dua hauv kev tsim cov khoom siv loj.
Dab tsi yog qhov zoo ntawm inkjet luam ntawv piv rau cov txheej txheem evaporation?
Cov khoom siv tes ua yog yooj yim dua. Organic light-emitting cov ntaub ntawv muaj ntau dua evaporation efficiency thiab cov ntaub ntawv siv tus nqi. Thaum lub sij hawm evaporation, cov khoom siv roj yog tso rau ntawm iav substrate yam tsis muaj qhov sib txawv, thiab qhov kev siv cov khoom siv tsawg.
Raws li lub npog ntsej muag loj loj, cov txheej txheem tsis tuaj yeem siv rau kev tsim cov vaj huam sib luag loj. Tus nqi tsim khoom yog qis dua. Hauv kev siv cov khoom siv raw rau OLED vaj huam sib luag, luam ntawv OLED txuag txog 90 feem pua piv nrog cov tshuab evaporation.
Dab tsi yog qhov nyuaj ntawm inkjet luam ntawv?
Ink: Kev ruaj ntseg ntawm tus number case yog qhov tseem ceeb hauv kev luam ntawv, thiab ntxiv rau nws cov khoom hloov pauv, qhov loj dua uas cuam tshuam rau kev ruaj ntseg ntawm tus number case yog huab cua npuas. Piv txwv tias cov tuam txhab lag luam uas twb muaj lawm tuaj yeem muab cov khoom lag luam ruaj khov thiab ntau ntau ntawm cov xim tsis muaj xim, cov pa npuas yuav raug qhia thaum lub sij hawm thauj mus los thiab sau cov number case, thiab tsis muaj kev daws teeb meem zoo rau yuav ua li cas tshem tawm cov npuas npuas rau lub sijhawm.
Nozzle: Ntxiv rau ib lub nozzle ib lub nozzle siv rau ntawm cov tshuab R & D me me, ib lub nozzle ntau lub nozzle nozzle feem ntau siv rau hauv nruab nrab platforms thiab saum toj no. Lub nozzle tuaj yeem siv ntau lub nozzles rau kev luam ntawv thaum lub sij hawm luam ntawv, kom tus number case ntim hauv txhua pixel tuaj yeem ua nyob rau hauv qhov chaw ntawm kev txhim kho ntau lawm efficiency.
Kev tsim zaj duab xis: Kev tsim zaj duab xis kuj yog ib qho teeb meem ntawm kev daws teeb meem luam ntawv. Tus number case twb evaporates ntawm qhov chaw thaum nws luam tawm. Feem ntau, ntug ntawm tus number case evaporates sai dua, thiab lub nplhaib kas fes yuav tshwm sim.
