Yav dhau los, thaum peb them nyiaj rau Micro LED, peb tsis tuaj yeem zam lub ntsiab lus nyuaj ntawm "kev hloov pauv loj".Niaj hnub no, nws yog qhov zoo dua los dhia tawm ntawm shackles ntawm chips thiab sib tham txog qhov teeb meem no ntawm txoj kev ntawm LED miniaturization.Cia peb saib ntawm qhov hloov pauv hloov ntawmMini LEDmus rau Micro LED, ntim daim ntawv, luminescent khoom thiab tsav tsheb IC.Leej twg yuav mus mainstream?Leej twg yuav ploj mus ntawm peb qhov muag?
Los ntawm lub suab me me mus rau Micro LED, dab tsi yuav tshwm sim hauv daim ntawv ntawm cov khoom ntim khoom?
Los ntawm qhov kev xav ntawm kev ntim khoom, LED zaub tuaj yeem muab faib ua peb lub sijhawm: suab me me, Mini thiab Micro.Txawv ntim eras muaj cov khoom sib txawv ntawmflexible LED zaubkhoom siv.1. Ib leeg-pixel 3-hauv-1 sib cais ntaus ntawv SMD: 1010 yog ib tus neeg sawv cev raug cai;2. Array hom pob khoom sib cais AIP: Plaub hauv ib qho yog tus neeg sawv cev raug cai;3. Nto gluing GOB: SMD ib txwm kub kua gluing yog ib tug neeg sawv cev;4. Integrated ntim COB: ib txwm kub kua kua nplaum yog ib tug neeg sawv cev.
Nyob rau hauv Mini LED era, muaj ob lub ntsiab ntawm cov khoom siv: all-in-one discrete devices and integrated packaging.Tus neeg sawv cev ntawm SMT yog tagnrho-hauv-ib qho thiab cov khoom siv sib cais.Tus neeg sawv cev ntawm lub cev module splicing yog integrated ntim.Integrated ntim tshuab tseem muaj teeb meem xws li xim number case thiab xim sib xws, yield, thiab nqi.0505 cov khoom sib cais yog qhov txwv ntawm SMD.Tam sim no, nws yog feem ntau ntsib nrog kev ntseeg siab, SMT efficiency, thrust thiab lwm yam teeb meem.Nyob rau hauv Mini LED era, nws yuav tau poob lub ntsiab ntawm technology.Nyob rau hauv lub era ntawm Micro LED, tsis muaj qhov tsis ntseeg tias nws yuav yog kev ntim khoom.Tab sis lub hom phiaj ntawm qhov teeb meem yog nyob rau hauv nti hloov.
Raws li kev kwv yees yav tom ntej thev naus laus zis tiam sis ntawm LED zaub, muaj plaub lub ntsiab lus tseem ceeb:1. Ntim tshuab tau hloov zuj zus los ntawm cov khoom siv thev naus laus zis rau ntim tshuab ntim khoom, ntsib LED miniaturization.Qhov no yuav yog txoj hauv kev los txo cov kauj ruam tsim khoom thiab txo cov nqi hauv lub cev.2. Los ntawm Ib qho ntawm ib qho, Plaub hauv ib rau N hauv ib qho.Daim ntawv ntim tau yooj yim.3. Los ntawm kev xav ntawm nti loj thiab dot suab, tsis muaj qhov tsis txaus ntseeg ntawm Mini LED mus rau micro LED.4. Los ntawm kev xav ntawm lub davhlau ya nyob twg ua lag luam, yav tom ntej LED zaub yuav hloov los ntawm engineering thiab xauj tsev mus rau kev lag luam zaub.Kev hloov ntawm cov zaub "screen" mus rau cov zaub "device".
Nyob rau hauv lub era ntawm Mini LED thiab Micro LED, dab tsi txog phosphors?
Mini LED / Micro LED puv-chip qhia feem ntau nyiam los ntawmcoj zaub kev lag luam, tab sis cov teeb meem ntawm kev hloov loj heev nyob rau hauv cov txheej txheem tsim, ntau xim nti tswj thiab sib txawv attenuation kuj tseem ceeb heev.Ua ntej cov teeb meem saum toj no yuav daws tau tag nrho, tsim cov phosphors tshiab zoo siab los ntawm xiav Mini LED / Micro LED kom tsis txhob muaj qhov tsis txaus ntawm cov cuab yeej technology uas twb muaj lawm thiab muab kev ua si tag nrho rau nws cov txiaj ntsig kev ua haujlwm kuj yog ib txoj hauv kev los txiav txim siab los ntawm kev lag luam.Txawm li cas los xij, nws yog ib qho tsim nyog los daws qhov teeb meem ntawm qhov me me me me ntawm phosphor thiab qhov ua tau zoo los ntawm qhov me me particle loj.
Tam sim no, Mini LED tseem tsim nyog rau kev lag luam LCD raws li lub teeb pom kev zoo, tab sis tam sim no nws tsis muaj nqi kom zoo dua.Niaj hnub no, theem kev lag luam ntawm cov kua siv lead ua kua zaub xim gamut raws li cov tshiab LED backlight qhov chaw tau tshaj 90% NTSC.Kev tshawb fawb txog lub ntiaj teb tsis tshua muaj tau ua tiav ntau lawm thiab siv dav dav ntawm nqaim-band fluorides.Nyob rau hauv ntxiv conquering tus tshiab nqaim-band emission ntawm liab thiab ntsuab phosphors thiab LED backlights.Qhov no yuav pab ntxiv kom cov xim gamut ntawm cov kua siv lead ua kua rau 110% NTSC, uas yog piv rau OLED / QLED thev naus laus zis.
Tsis tas li ntawd, tej zaum quantum dot light-emitting cov ntaub ntawv kuj tuaj yeem ua lub luag haujlwm.Tab sis quantum dot luminescent cov ntaub ntawv "zoo nkauj" thiab tau txais kev cia siab siab.Txawm li cas los xij, cov teeb meem ntawm kev ruaj ntseg, luminous efficiency, kev tiv thaiv ib puag ncig thiab kev siv nyiaj siab tsis tau daws tau zoo.Tsis tas li ntawd, photoluminescent quantum dots yog kev hloov pauv.Kev thov tiag tiag ntawm quantum dots yog hauv QLED.Tam sim no, qee lub ntiaj teb tsis tshua muaj kuj tau tsim cov khoom siv luminescent rau QLED.
Vim li cas thawj LED zaub tsav tsheb txoj kev tsis ua haujlwm thaum nws los txog rau lub sijhawm ntawm Mini thiab Micro LED?
Thaum cov lus qhia LED nkag mus rau Micro LED thiab Mini LED, ib txwm siv LED zaub txoj kev tsav tsheb tsis tuaj yeem siv.Qhov laj thawj tseem ceeb yog qhov chaw muaj.Feem ntau hais lus, ib txwm muajLED zaubTus tsav tsheb IC tuaj yeem tsav mus txog 600 pixels, thiab vim tias cov lus qhia LED feem ntau yog siv hauv thaj tsam ntawm ntau dua 120 ntiv tes, qhov loj ntawm IC yuav tsis ua teeb meem.Txawm li cas los xij, yog tias tib lub pixels haum rau qhov loj ntawm phau ntawv sau lossis lub xov tooj ntawm tes, ICs ntawm tib qhov loj thiab tus lej yuav tsis haum rau hauv lub cuab yeej ntawm phau ntawv sau lossis lub xov tooj ntawm tes, yog li Micro LED thiab Mini LED yuav tsum muaj kev tsav tsheb sib txawv.
Feem ntau, cov qauv tsav ntawm cov duab tuaj yeem muab faib ua ob hom.Thawj hom yog Passive Matrix.Feem ntau passive txhais tau hais tias tsuas yog thaum lub scanned pixels raug rau tam sim no los yog voltage yuav muaj lub teeb emission.Tus so ntawm lub sij hawm uas tsis scanned yog inactive.Txij li cov qauv no tsuas yog ua haujlwm rau ib kem thaum lub sijhawm ntawm txhua tus ncej hloov dua siab tshiab, nws nyuaj heev kom ua tiav cov kev xav tau ntawm kev daws teeb meem siab thiab siab ci ntawm ib lub vaj huam sib luag.Thiab tsuav yog muaj luv luv nyob rau hauv ib qho ntawm pixels, nws yog ib qho yooj yim los ua teeb liab crosstalk.
Tsis tas li ntawd, kuj tseem muaj cov qauv tsim uas siv cov transistor ntxiv los ua qhov hloov pauv kom tsis txhob muaj teeb meem cuam tshuam los ntawm cov teeb meem cuam tshuam.Txawm li cas los xij, qhov kev txiav txim tseem yog passive.Tam sim no, txoj kev tsav tsheb no feem ntau yog siv rau hauv daim ntawv thov kev daws teeb meem vim nws txoj kev tsim hluav taws xob yooj yim dua thiab tus nqi qis dua.Xws li kev ua kis las hnav bracelets.Yog tias xav tau lub vaj huam sib luag siab, ntau qhov kev daws teeb meem qis tuaj yeem siv rau kev sib xyaw ua ke, xws li lub vijtsam loj.
Lwm hom kev tsav tsheb yog Active Matrix.Raws li lub npe qhia, Active Matrix tuaj yeem tswj xyuas qhov voltage tam sim no lossis lub xeev tam sim no los ntawm kev cia khoom ntawm pixel nws tus kheej nyob rau hauv ib lub thav duab ntawm tus ncej.Vim tias lub capacitor siv rau kev cia khoom, kuj tseem muaj teeb meem ntawm kev xau thiab teeb liab crosstalk, tab sis nws yog me dua li kev tsav tsheb tsis zoo.Txoj kev tsav tsheb analog feem ntau tseem muaj qhov teeb meem sib xws los ntawm cov txheej txheem nyias zaj duab xis transistor thiab lub teeb-emitting ntaus ntawv nws tus kheej ntawm kev daws teeb meem siab.Yog li ntawd, muaj ntau txoj hauv kev tam sim no cov qauv xws li 7T1C lossis 5T2C los daws qhov teeb meem sib xws.
Thaum lub pixel loj me me rau qee qhov thiab cov kev xav tau daws teeb meem siab heev, cov qauv tsav digital yuav siv ntau li ntau tau kom tau raws li qhov teeb meem sib xws uas tau hais los saum no.Feem ntau, pulse width modulation (PWM) yog siv rau grey scale hloov.los tsim cov xim sib txawv ntawm grey.
Txoj kev PWM feem ntau yog siv cov ntu pulse faib raws lub sijhawm sib txawv los tsim cov kev hloov pauv grey sib txawv los ntawm kev hloov lub sijhawm ntawm kev qhib thiab tawm.Cov txheej txheem no tseem tuaj yeem hu ua lub luag haujlwm kev hloov pauv.Txij li cov LEDs yog cov khoom siv tam sim no-tsav, hauv kev tsim ntawm Micro-LED micro cov lus qhia, tus qauv tsim ntawm ib qho kev ywj pheej ruaj khov tam sim no feem ntau siv los tsav txhua pixel ywj siab kom tau raws li cov kev xav tau ntawm cov teeb ci ci thiab ruaj khov wavelength., Tsis tas li ntawd, yog tias kev hloov pauv ntawm kev ywj pheej sib txawv xim Micro-LED thev naus laus zis siv, nws yog ib qho tsim nyog yuav tsum xav txog qhov kev ua haujlwm ntawm qhov sib txawv RGB, thiab yog li ntawd yuav tsum tau tsim ib qho kev ywj pheej voltage tswj Circuit Court hauv pixel.
Post lub sij hawm: Oct-10-2022