Nyeem txog tiam tom ntej ntawm cov thev naus laus zis tso saib tseem ceeb - Micro-LED
Nyob rau lub caij tam sim no, thev naus laus zis tso saib tau dhau los ua ib txoj hauv kev tseem ceeb ntawm kev sib pauv cov ntaub ntawv, suav nrog cov xov tooj ntse, VR / AR khoom siv, cov khoom siv hnav tau, cov zaub hauv tsheb, ntsiav tshuaj / khoos phis tawj thiab laser projection.
Micro LEDthev naus laus zis hu ua "tiam tom ntej mainstream display technology", nws txoj kev loj hlob thiab kev lag luam tab tom nrawm dua, thiab cov cib fim ua lag luam tab tom nce ntxiv.
Kev teeb tsa ntawm cov tuam txhab ua lag luam hauv tebchaws
Tianma Microelectronics tau nqis peev rau hauv Micro-LED thev naus laus zis txij li xyoo 2017, tsom mus rau PPI siab, qhov kaj siab thiab siab cov zaub transparencyLub tuam txhab tau tsim ntau yam khoom Micro-LED ua tus thawj coj hauv kev lag luam.
Xyoo 2022, Tianma tau nqis peev rau kev tsim cov kab ntau lawm Micro-LED tag nrho los ntawm kev hloov pauv loj mus rau qhov module zaub, siv cov txheej txheem laser thiab cov khoom siv kho kom haum, yog tias tsis muaj thev naus laus zis hauv ntiaj teb, kom ua tiav kev tsim khoom tsis siv neeg. Cov kab tau ua tiav nws thawj qhov kev tsim khoom thaum Lub Rau Hli 26, 2024, thaum lub sijhawm ntawd ntau dua 30 cov khoom siv tsim khoom thiab cov ntaub ntawv tau tsim los ntawm kev koom tes nrog cov tuam txhab xa khoom.
Thaum Lub Ib Hlis 31, BOE Huacan Optoelectronics Zhuhai Micro LED Qhov project tsim thiab ntim khoom wafer tau kaw lawm, qhov project no npog thaj tsam li ntawm 217 daim av, kev nqis peev li ntawm 2 billion yuan, yuav teeb pom kev zoo thawj zaug rau lub Cuaj Hli 2024, npaj yuav tsim ntau rau lub Kaum Ob Hlis xyoo no, yav tom ntej yuav ua tiav cov khoom tsim tawm txhua xyoo ntawm 58,800Micro LEDcov ncuav qab zib.
Raws li cov ntaub ntawv, qhov loj ntawm kev ua lag luam ntawm Micro LED chips hauv xyoo 2023 yog kwv yees li 32 lab daus las Asmeskas, thiab nws xav tias qhov loj ntawm kev ua lag luam Micro LED thoob ntiaj teb hauv xyoo 2025 yuav tshaj 3.5 billion daus las Asmeskas los ntawm xyoo 2025, thiab nws xav tias yuav tawg ntxiv 10 billion daus las Asmeskas cim hauv xyoo 2027.
Micro-LED - tiam tom ntej ntawm kev siv tshuab tso saib loj
Micro-LED, tseem hu ua mLED lossis μLED, yog ib lub cuab yeej ua los ntawm cov khoom siv hluav taws xob micron-scale. Los ntawm kev siv tshuab hloov pauv loj, cov khoom no tuaj yeem hloov mus rau ib lub substrate tawv lossis yoog tau thiab tom qab ntawd ntim nrog cov txheej tiv thaiv thiab electrodes.
Lub hauv paus ntsiab lus ntawm Micro-LED zaub
Lub hauv paus ntawm MicroLED thev naus laus zis yog nyob rau hauv nws cov qauv pixel, txhua pixel yog tsim los ntawm liab, ntsuab, thiab xiav thawj xim sub-pixels. Txhua sub-pixel tuaj yeem tswj tau ywj pheej kom kho qhov ci, xim thiab qhov sib piv ntawm qhov zaub. Hauv MicroLED zaub system, lub teeb uas tawm los ntawm txhua LED yog ua tiav los ntawm lub lens thiab daim iav, thiab thaum kawg tsim cov pixels ntawm qhov screen zaub, thiab raug kho los ntawm lub lim xim kom pom qhov kev ua tau zoo ntawm xim. Qhov zoo ntawm cov thev naus laus zis no yog nws lub peev xwm los muab qhov ci ntsa iab siab heev, sib piv thiab qhov tseeb ntawm xim.
Tsis tas li ntawd, Micro LEDCov array txuas nrog cov ncej zoo thiab tsis zoo ntawm txhua lub Micro LED los ntawm cov electrodes zoo thiab tsis zoo uas tau teeb tsa ntsug. Qhov kev sib txuas no ua rau Micro LED ci los ntawm kev luam theej duab los ntawm kev ua kom cov kab electrode ua haujlwm hauv ib qho kev sib law liag, yog li ua tiav cov duab tso tawm.
Cov txheej txheem Micro-LED
Micro-LED yog ib qho qauv LED uas tau ua tiav los ntawm zaj duab xis nyias, miniaturization thiab array, thiab nws qhov loj yog li 1-100μm. Cov txheej txheem no cuam tshuam nrog kev hloov cov micro-leds ua pawg rau cov laug cam, uas tuaj yeem nyuaj lossis mos, pob tshab lossis opaque. Tom ntej no, cov txheej txheem tso tawm lub cev siv los ntxiv ib txheej tiv thaiv thiab electrode sab saud, thiab thaum kawg lub substrate sab saud tau ntim los ua ib qho Micro-LED zaub.
Cov zaub Micro-LED txawv ntawm cov zaub LED ib txwm muaj nyob rau hauv cov nqe lus ntawm cov noob, pob khoom, txheej txheem kev koom ua ke, backplane thiab tsav.
Cov txheej txheem tsim khoom Micro-LED feem ntau suav nrog:
Ua ntej, lub LED siv lead ua yog nyias-zaj duab xis, miniaturization thiab array los ntawm microfabrication txheej txheem thev naus laus zis
Tam sim no, cov txheej txheem miniaturization ntawm semiconductors thiab chips tab tom yuav luag txog nws qhov txwv, tab sis cov txheej txheem Micro-LED tseem muaj ntau chav rau kev loj hlob. Muaj peb txoj hauv kev tseem ceeb siv: chip level welding, epitaxial level welding thiab film transfer.
Kev sib txuas ntawm cov chips (Kev sib txuas ntawm cov chips)
Kev vuam theem nti suav nrog kev faib cov LED ua cov micron-scale Micro LED chips thiab txuas lawv rau lub rooj tsavxwm zaub siv SMT lossis COB thev naus laus zis. Txoj kev no tuaj yeem kho qhov sib nrug hloov pauv, tab sis tsis tuaj yeem hloov pauv ua pawg.
SMT siv dav hauv kev sib dhos hluav taws xob, los ntawm kev teeb tsa cov khoom siv chip rau ntawm PCB lossis lwm qhov chaw ntawm cov khoom siv substrate, siv cov txheej txheem reflow welding lossis dip welding xws li kev sib dhos vuam. Cov kauj ruam suav nrog kev tshuaj xyuas cov khoom siv, tshuaj ntsuam xyuas, daim ntawv nplaum, daim ntawv nplaum, ziab, reflow soldering, ntxuav, ntsaws-rau, nthwv dej soldering, rov ntxuav, tshuaj xyuas thiab kho.
COB yog ib qho thev naus laus zis tso saib me me uas ncaj qha encapsulates LED wafers rau ntawm PCB thiab muab lawv ua ke rau hauv CELL units. Piv nrog rau thev naus laus zis SMD, COB ntim khoom thev naus laus zis muaj nws cov txiaj ntsig tshwj xeeb.
Kev sib txuas ntawm wafer (epitaxial welding)
Kev vuam theem Epitaxial yog ib txoj hauv kev los tsim cov qauv zaj duab xis nyias nyias micrometer theem Micro-LED epitaxial ncaj qha rau ntawm LED epitaxial nyias zaj duab xis txheej los ntawm kev siv tshuab inductively coupled plasma ion etching (ICP). Qhov sib nrug ruaj khov ntawm cov qauv no yog qhov sib nrug xav tau ntawm cov pixels tso saib.
Tom qab ntawd, lub LED wafer uas muaj cov txheej epitaxial thiab lub substrate txuas ncaj qha rau lub rooj tsavxwm tsav, thiab lub substrate raug stripped siv lub cev lossis tshuaj lom neeg mechanism, tawm tsuas yog 4 txog 5μm Micro-LED epitaxial zaj duab xis qauv los tsim ib qho zaub pixel ntawm lub rooj tsavxwm tsav. Qhov zoo ntawm txoj kev no yog tias kev hloov pauv batch tuaj yeem ua tau, tab sis qhov tsis zoo yog tias lub sijhawm hloov pauv tsis tuaj yeem hloov kho.
Kev hloov pauv zaj duab xis nyias
Lub substrate LED raug tshem tawm los ntawm kev siv lub cev lossis tshuaj, siv lub substrate ib ntus los tuav cov txheej zaj duab xis Micro-LED. Tom qab ntawd, cov qauv micron yog tsim los ntawm kev sib txuas plasma etching. Lwm txoj kev yog los txiav ua ntej thiab tom qab ntawd tev tawm lub substrate LED. Raws li qhov xav tau ntawm qhov chaw tso saib ntawm lub voj voog tsav tsheb, zaj duab xis Micro-LED raug tsiv mus rau lub rooj tsav tsheb ua pawg nrog cov cuab yeej hloov pauv xaiv kom ua tiav qhov sib dhos ntawm qhov chaw tso saib. Cov txheej txheem no pheej yig, tsis txwv los ntawm qhov loj ntawm lub rooj tsavxwm tso saib, thiab tuaj yeem hloov pauv ntawm qhov loj.
Qhov thib ob, kev hloov pauv mus rau lub rooj tsavxwm - kev siv tshuab hloov pauv loj heev
Tus yuam sij rau Micro-LED thev naus laus zis yog kev sib koom ua ke ntawm cov teeb pom kev me me ntawm lub nti, uas xav tau cov txheej txheem tshwj xeeb - kev hloov pauv loj micro (tseem hu ua kev hloov pauv loj) thev naus laus zis.
Cov txheej txheem no suav nrog kev vuam cov noob LED tseem ceeb rau ntawm lub rooj tsavxwm me me TFT, uas xav tau qhov ua tsis tiav siab heev. Txawm hais tias muaj ntau yam thev naus laus zis sib txawv sim ua tiav lub hom phiaj no, kev hloov pauv loj tseem yog ib qho thev naus laus zis uas yuav tsum tau tsim ntau heev.
Cov txheej txheem hloov pauv pawg loj muaj plaub pawg: kev tuav kom raug, kev sib dhos tus kheej, kev tso tawm xaiv, thiab kev hloov pauv.
Vim muaj kev thov ntau ntxiv rau cov ntxaij vab tshaus uas muaj xim siab thiab muaj kev daws teeb meem siab, kev siv xim Micro-LED tau dhau los ua qhov kev tshawb fawb tseem ceeb. Tam sim no, cov txheej txheem tseem ceeb suav nrogTxoj kev RGB peb xim LED, UV/xiav LED teeb-emitting nruab nrab txoj kev thiab txoj kev tsim cov lens optical.
Raws li kev lag luam AR / VR txuas ntxiv loj hlob, muaj kev xav tau ntau ntxiv rau cov vaj huam sib luag ua haujlwm siab uas cov LCD thiab OLED ib txwm tsis tuaj yeem ua tau. Kev ua lag luam xav tau cov thev naus laus zis tshiab los txhim kho kev ua tau zoo thiab ua tau raws li cov qauv kev txhim kho yav tom ntej. Micro-LED thev naus laus zis ua ib qho kev daws teeb meem tshiab, nws cov yam ntxwv ua rau nws yog tus neeg sib tw muaj zog los ua kom tau raws li cov kev xav tau no.
