Yav tom ntej Analysis ntawm Quantum Dot TV Technology
Nrog rau kev txhim kho cov thev naus laus zis thev naus laus zis, TFT-LCD kev lag luam, uas tau ua tus thawj coj ntawm kev lag luam zaub rau ntau xyoo, tau muaj kev sib tw zoo heev.OLED tau nkag mus rau ntau lawm thiab tau txais kev pom zoo hauv kev lag luam smartphones.Cov thev naus laus zis tshiab xws li MicroLED thiab QDLED kuj tseem nyob hauv lub viav vias.Kev hloov pauv ntawm TFT-LCD kev lag luam tau dhau los ua ib qho kev hloov pauv tsis tau Raws li kev nruj OLED qhov sib txawv siab (CR) thiab cov yam ntxwv ntawm cov xim gamut, TFT-LCD kev lag luam tau tsom mus rau kev txhim kho cov yam ntxwv ntawm LCD xim gamut thiab npaj lub tswv yim ntawm "quantum. dot TV."Txawm li cas los xij, lub npe hu ua "quantum-dot TVs" tsis siv QDs los tso saib QDLEDs ncaj qha.Hloov chaw, lawv tsuas yog ntxiv QD zaj duab xis rau cov pa TFT-LCD backlight.Lub luag haujlwm ntawm QD zaj duab xis no yog los hloov ib feem ntawm lub teeb xiav tawm los ntawm lub teeb rov qab mus rau hauv lub teeb ntsuab thiab liab nrog qhov nqaim wavelength tis, uas yog sib npaug rau tib yam li cov pa phosphor.
Lub teeb ntsuab thiab liab hloov los ntawm QD zaj duab xis muaj qhov nqaim wavelength faib thiab tuaj yeem ua tau zoo nrog CF lub teeb xa hluav taws xob siab ntawm LCD, kom lub teeb poob tuaj yeem txo qis thiab qee qhov teeb pom kev zoo tuaj yeem txhim kho.Tsis tas li ntawd, txij li lub wavelength faib yog nqaim heev, RGB monochromatic lub teeb nrog cov xim purity siab dua (saturation) tuaj yeem pom tau, yog li cov xim gamut tuaj yeem ua loj Yog li ntawd, kev siv thev naus laus zis ntawm "QD TV" tsis cuam tshuam.Vim tias qhov kev paub txog kev hloov pauv fluorescence nrog qhov nqaim luminescent bandwidth, cov pa phosphors kuj tuaj yeem ua tiav.Piv txwv li, KSF: Mn yog tus nqi qis, nqaim-bandwidth phosphor kev xaiv.Txawm hais tias KSF: Mn ntsib teeb meem kev ruaj ntseg, kev ruaj ntseg ntawm QD yog qhov phem dua li ntawm KSF: Mn.
Tau txais kev ntseeg siab QD zaj duab xis tsis yog yooj yim.Vim tias QD raug dej thiab oxygen nyob rau hauv ib puag ncig hauv cov huab cua, nws sai sai quenches thiab luminous efficiency poob heev.Cov dej-pov thawj thiab oxygen-pov thawj tiv thaiv kev daws teeb meem ntawm QD zaj duab xis, uas tau txais dav dav tam sim no, yog kom sib tov QD rau hauv cov kua nplaum ua ntej, thiab tom qab ntawd muab cov kua nplaum nplaum ntawm ob txheej ntawm cov dej pov thawj thiab cov pa oxygen-pov thawj yas zaj duab xis rau tsim ib qho "sandwich" qauv.Qhov kev daws teeb meem no nyias nyias nyias thiab nyob ze rau qhov qub BEF thiab lwm cov yeeb yaj kiab kho qhov muag ntawm lub teeb nraub qaum, uas pab txhawb kev tsim khoom thiab sib dhos.
Qhov tseeb, QD, raws li cov khoom siv luminous tshiab, tuaj yeem siv los ua cov khoom siv photoluminescent fluorescent hloov dua siab tshiab thiab tseem tuaj yeem raug hluav taws xob ncaj qha rau emit lub teeb.Kev siv ntawm thaj chaw tso saib yog ntau tshaj li ib txoj hauv kev ntawm QD zaj duab xis Piv txwv li, QD tuaj yeem siv rau MicroLED ua txheej txheej fluorescence hloov pauv lub teeb xiav lossis violet lub teeb tawm los ntawm cov nti uLED rau hauv lub teeb monochromatic ntawm lwm cov wavelengths.Txij li qhov luaj li cas ntawm uLED yog los ntawm kaum micrometers mus rau ntau kaum micrometers, thiab qhov loj ntawm cov pa phosphor hais yog tsawg kawg ntawm ib lub kaum micrometers, qhov luaj li cas ntawm cov pa phosphor yog ze rau ib nti loj ntawm uLED. thiab tsis tuaj yeem siv los ua qhov hloov pauv fluorescence ntawm MicroLED.khoom.QD yog tib qho kev xaiv rau cov ntaub ntawv hloov xim fluorescent tam sim no siv rau cov xim ntawm MicroLEDs.
Tsis tas li ntawd, CF nyob rau hauv lub LCD cell nws tus kheej ua raws li lub lim thiab siv lub teeb-absorbing khoom.Yog hais tias tus thawj lub teeb-absorbing cov ntaub ntawv yog ncaj qha hloov nrog QD, ib tug self-luminous QD-CF LCD cell yuav pom tau hais tias, thiab lub optical efficiency ntawm TFT-LCD yuav ua tau zoo heev thaum ua tiav ib tug dav xim gamut.
Hauv cov ntsiab lus, quantum dots (QDs) muaj cov ntawv thov dav dav hauv thaj chaw tso saib.Tam sim no, lub npe hu ua "quantum-dot TV" ntxiv QD zaj duab xis rau cov pa TFT-LCD backlight qhov chaw, uas tsuas yog kev txhim kho ntawm LCD TVs thiab tsis tau siv tag nrho cov txiaj ntsig ntawm QD.Raws li kev kwv yees ntawm lub koom haum tshawb fawb, cov khoom siv thev naus laus zis ntawm lub teeb xim gamut yuav tsim ib qho xwm txheej uas cov qib siab, nruab nrab thiab qis thiab peb hom kev daws teeb meem yuav sib koom ua ke nyob rau xyoo tom ntej.Hauv cov khoom nruab nrab thiab qib qis, phosphors thiab QD zaj duab xis tsim kev sib raug zoo.Hauv cov khoom lag luam siab, QD-CF LCD, MicroLED thiab QDLED yuav sib tw nrog OLED.