Sida laga soo xigtay warbixinno dhawaan ka soo baxay warbaahinta Kuuriyada Koonfureed, Machadka Teknolojiyadda ee Kuuriyada Koonfureed (KOPTI) ayaa ku dhawaaqay horumarinta guusha leh ee tignoolajiyada Micro LED ee hufan oo wanaagsan. Waxtarka gudaha ee Micro LED waxaa lagu hayn karaa 90%, iyadoon loo eegin cabbirka jajabka ama cufnaanta duritaanka ee kala duwan.

Sawirka qalooca danabka hadda jira ee 20μm ee LED iyo qiiqa (sawirka sawirka: KOPTI)

Tiknoolajiyaddan Micro LED waxaa si wadajir ah u sameeyay kooxda Dr. Jong hyup Baek ee ka socota Waaxda Bandhigga Semiconductor-ka ee Indhaha, kooxda Semi-ga ZOGAN oo uu hoggaaminayo Dr. Woong ryeol Ryu, iyo Professor Jong oo Shim ka tirsan Waaxda Nano-Optoelectronics ee Jaamacadda Hanyang. Badeecadu waxay wax ka qabanaysaa arrinta hoos u dhaca si degdeg ah u ah hufnaanta qiiqa iftiinka ee Micro LEDs-ka sababtoo ah cabbirka jajabka oo yaraada iyo qulqulka duritaanka oo kordha.

Waxaa la ogaaday in nalalka yaryar ee ka hooseeya 20μm cabbirka aysan kaliya la kulmin hoos u dhac degdeg ah oo ku yimaada hufnaanta qiiqa iftiinka laakiin sidoo kale waxay muujiyaan khasaarooyin muhiim ah oo aan shucaac ahayn oo ku jira heerka hadda hooseeya (0.01A/cm² ilaa 1A/cm²) oo loo baahan yahay si loo wado muraayadaha bandhigga. Waqtigan xaadirka ah, warshaduhu waxay qayb ahaan yareeyaan arrintan iyada oo loo marayo hababka passivation ee dhinaca chip-ka, laakiin si aasaasi ah uma xalliyaan dhibaatada.

Waxtarka quantum-ka gudaha (IQE) ee 20μm iyo 10μm buluugga ah ee Micro LED way kala duwan yihiin iyadoo loo eegayo cufnaanta hadda jirta.

KOPTI waxay sharraxaysaa in kooxda cilmi-baaristu ay yareeyeen cadaadiska ku jira lakabka epitaxial-ka isla markaana ay hagaajiyeen hufnaanta qiiqa iftiinka iyagoo hirgelinaya qaab-dhismeed cusub. Qaab-dhismeedkan cusub wuxuu xakameynayaa kala duwanaanshaha walbahaarka jireed ee Micro LED-ka hoostiisa goob kasta oo koronto ama qaab-dhismeed oo dibadda ah. Natiijo ahaan, xitaa iyadoo leh cabbir yar oo Micro LED ah, qaab-dhismeedka cusub wuxuu si weyn u yareeyaa khasaaraha dib-u-soo-kabashada dusha sare ee aan shucaaca lahayn isagoo ilaalinaya hufnaanta qiiqa iftiinka sare iyada oo aan loo baahnayn hababka passivation.

Kooxdu waxay si guul leh u ansixisay adeegsiga tiknoolajiyadda Micro LED ee hufan oo tayo sare leh ee aaladaha buluugga ah, gallium nitride cagaaran, iyo casaanka ah. Mustaqbalka, tiknoolajiyaddani waxay leedahay awood ay ku soo saarto bandhigyo gallium nitride Micro LED ah oo midab buuxa leh.