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OLED Cov Txheej Txheem Feem Ntau Lawm

Apr 24, 2018

OLED mainstream production technology

Cov txheej txheem evaporation

Ua ntej tshaj plaws, kom nkag siab txog cov tshuab evaporation, peb yuav tsum pib nrog tus qauv ntawm OLED. Raws li pom hauv daim duab nram qab no, tus qauv raug tsim los ua ib txheej txheej ntawm cov khoom siv hluav taws xob ntawm iav iav. Lub ITO pob tshab electrode thiab cov hlau electrode yog siv los ua tus anode thiab cathode electrode ntawm tus ntaus txuas. Raws li ib qhov voltage, cov electrons thiab qhov yog txhaj ntawm cathode thiab anode rau cov hluav taws xob thiab qhov kis kab, qhov hluav taws xob thiab cov ntsiab lus qhov, feem. Tsis txhob mus rau hauv luminescent txheej txheem los ntawm electron thiab lub qhov thauj txheej thiab sib ntsib hauv cov luminescent txheej tsim cov exciton thiab hnia cov luminescent molecules, uas tawm qhov muag pom los ntawm cov hluav taws xob so. Lub teeb hluav taws xob tuaj yeem raug cai ntawm sab ntawm ITO, thiab cov hlau electrode zaj duab xis kuj ua raws li txheej txheem.

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Ntawm chav kawm, mus rau tag nrho vaj huam sib luag, tus qauv kuj yog ib qho nyuaj heev, nrog rau kev sib cais, rwb thaiv tsev thiab lwm yam. AMOLED kuj muaj TFT backplane uas tswj txhua tus pixel hloov.

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Schematic daim duab ntawm OLED pixel qauv


Nyob hauv txoj kev yooj yim, txoj kev tuaj yeem yog txoj hauv kev cua sov hauv hluav taws xob los ntawm hluav taws xob tam sim no, hluav taws xob nyom bombardment thiab laser cua sov ua rau cov ntaub ntawv ua tau rau hauv cov xau lossis cov khoom molecules, thiab lawv tam sim ntawd tsiv mus nyob hauv txoj kev pub dawb, tsoo lub ntsej muag substrate thiab tsim ib zaj duab xis.

Cov khoom siv hlau ntawm OLED yog lub tshuab ua lub tshuab, uas yog lub qhov cub ntawm lub vaj huam sib luag tsim lag luam. Lub ntsiab lag luam yog ib lub npe hu ua Canon Tokki nyob rau hauv Canon chij. Raws li lub ntiaj teb OLED lag luam surging, Tokki tau ua lag luam tsis tu ncua hauv kev tsim peev txheej, tiam sis nws tseem nyuaj ua kom tau raws li qhov xav tau ntawm cov neeg siv khoom. Nws tau hais tias Tokki lub xyoo ncoo tshuab tsuas yog ob peb tug, xws li LG Display, cov neeg tuaj ua lag luam loj heev tau poob lub kua muag vim cov txwv cov cav tov.

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Kev luam tawm tshuab

Nyob rau ntawm OLED screen, txhua lub pixel "teeb" tuaj yeem luam ntxiv nrog rau steamed. Piv txwv, inkjet printers siv cov lej ntxig cov ntawv luam tawm los muab tshuaj pleev xim rau hauv ntawv los tsim cov ntawv sau los yog duab. Kev luam tawm thiab cov yeeb yam yog cov khoom siv nquag khoom siv los luam tawm. Nws yog ib txoj hau kev. Thaum pom qhov luam tawm, nyias muaj nyias cov ntawv luam tawm. Yog tias "tshuaj tsuag" yog cov khoom siv ntawm OLED, uas yog lub vaj huam sib luag ntawm OLED; "tshuaj tsuag" yog ib qho khoom quantum dot, uas yog cov khoom vaj khoom tsev quantum dot. Kev luam tawm OLED, tsuas yog los ntawm cov inkjet luam ntawv khoom siv rau ntawm ntau lub luam ntawv nozzles, cov xim txawv ntawm cov kua polymer luminescent khoom haum yog raug tso hauv ITO iav substrate cais kem qhov, tom qab qhov hnyav evaporation yuav tsim ib txheej txheem ntawm 100 nanometers thickness, tsim ib lub luminescent pixel.


Vim li cas nws thiaj hais tias kev luam ntawv siv tshuab yog lub caij ntxiv ntawm kev nthuav qhia ntawm lub tshuab? Lub tshuab nqus tsev evaporation, nrog rau cov cuab yeej thiab cov cuab yeej siv, nws yog qhov nyuaj los tsim cov ntaub npog ntsej muag loj loj, uas ua rau cov txheej txheem tsis tuaj yeem raug siv ua cov khoom loj loj. Nyob rau hauv tus txheej txheem ntawm evaporation, organic khoom roj yog tso rau iav substrate yam tsis muaj qhov sib txawv, ua rau muaj kev siv tsawg ntawm cov ntaub ntawv. Tej zaum vim hais tias tsis muaj teeb meem rau lub tshuab hluav taws xob, tsis muaj xim ntsej muag hlau, tsis muaj xim lim, thiab lwm yam, Matsushita tau qhia tus kheej tsim "luam" ntawm tus txheej txheem CES hauv 2013 thiab, raws li lawv tus kheej, lub ntiaj teb coob 4K OLED electric saib (56 nti).


Dab tsi yog qhov zoo ntawm kev luam ntawv OLED rau kev sib tw rau cov khoom lag luam kuj ntawm kev sib evaporation? Ua ntej, tus nqi qis dua. Hauv kev siv cov khoom raw hauv OLED vaj huam sib luag, luam ntawv OLED yog 90% tsawg dua ntawm cov tshuab tshuab raj; luam tawm OLED tshuab tau zoo tuaj yeem txhim kho lub neej ntawm cov khoom tiav; cov txheej txheem ntawm number case-printing luam tau yooj yim dua rau cov kev xav tau ntawm kev txiav cov loj substrate dua cov txheej txheem evaporation. Qhov no yog qhov zoo tshaj plaws rau qhov sib txawv ntawm kev soj ntsuam nrog cov loj teev substrates rau ntawm txoj kab siab.

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Schematic daim duab ntawm kev luam daim OLED


Qhov saum toj no tau hais tias "high evaporated" atmospheric qib "evaporation" yog siv los ntawm kev sojntsuam ntse hauv OLED ntawm RGB tricolor tshiab. Samsung ntau cov khoom noj uas yog OLED yog raws li cov qauv ntawm evaporation, cov nyhuv zoo heev, peb thawj xim yog heev ntshiab, tab sis tus nqi yog siab heev. Cov tshuab siv rau hom evaporation no hu ua FMM, ib daim npog ntsej muag, uas yog los npog lub npog ncauj thaum nws khov lawm, yog li qhov teeb meem ntawm cov ntawv sib dhos, thiab lub tshuab daim npog ntsej muag nws yuav yog qhov nyuaj.


Qhov tseeb, kom tswj tau tus nqi, OLED TV muaj ntau tshaj ib hom, thiab muaj ib hom xim xiav + xim hloov txheej: qhov tswv yim no tsuas xav tau lub zog ntawm lub teeb xiav OLED thiab tig teeb rau hauv RGB peb xim los ntawm kev hloov txheej txheem. Qhov kev siv tshuab no tsuas yog siv los ntawm qhov nyuaj ntawm kev tsim cov xim hloov cev, thiab tsis yog siv loj teev.


Lwm hom ntawm OLED TV yog lub teeb dawb thiab peb cov xim lim, uas zoo ib yam li LCD LCD panels hauv txoj cai, nrog dawb li nrig, thiab xim cov ntxaij lim dej, uas yog obviously txo nqi. LG tau tsim TV hauv TV nrog cov tswv yim no, thiab cov dawb OLED + xim lim ib zaug yog ib qho tseeb OLED. Tus nqi qis dua. Tsuas ntxiv cov ntxaij lim dej, kev hloov pauv, xim purity yog teeb meem ntau dua, thiaj li ci ntsa iab, zoo ib, xim, kev txuag lub zog tsis zoo li RGB OLED txoj kev xav.