Ngokweengxelo zakutshanje ezivela kwimidiya yaseMzantsi Korea, iKorea Photonics Technology Institute (KOPTI) ibhengeze uphuhliso oluphumeleleyo lwetekhnoloji yeMicro LED esebenza kakuhle necolekileyo. Ukusebenza kakuhle kwe-quantum yeMicro LED kunokugcinwa ngaphakathi kwe-90%, nokuba ubungakanani be-chip okanye ubuninzi be-injection current buhluke njani.

Umfanekiso we-20μm Micro LED current-voltage current kunye ne-emission current (umfanekiso: KOPTI)

Le teknoloji ye-Micro LED yaphuhliswa ngokudibeneyo liqela likaGqr. Jong hyup Baek elivela kwiSebe le-Optical Semiconductor Display, iqela le-ZOGAN Semi elikhokelwa nguGqr. Woong ryeol Ryu, kunye noNjingalwazi uJong in Shim osuka kwiSebe le-Nano-Optoelectronics kwiYunivesithi yaseHanyang. Le mveliso ijongana nomba wokuncipha ngokukhawuleza kokusebenza kokukhanya kwii-Micro LED ngenxa yokuncipha kobukhulu beetship kunye nokwanda kwemijelo ye-injection.

Kufunyenwe ukuba ii-Micro LEDs ezingaphantsi kwe-20μm ngobukhulu azigcini nje ngokuba namava okwehla ngokukhawuleza ekusebenzeni kokukhupha ukukhanya kodwa zikwabonisa ilahleko ezinkulu zokuphinda zibuyele kwimitha ngaphakathi koluhlu lwamandla aphantsi (0.01A/cm² ukuya kwi-1A/cm²) olufunekayo kwiiphaneli zokubonisa eziqhubayo. Okwangoku, eli shishini linciphisa le ngxaki ngeenkqubo zokudlulisa ukukhanya kwicala le-chip, kodwa alisombululi ingxaki ngokusisiseko.

Ukusebenza kakuhle kwe-quantum yangaphakathi (IQE) ye-20μm kunye ne-10μm blue Micro LED kuyahluka ngokwe-current density

I-KOPTI ichaza ukuba iqela lophando linciphise uxinzelelo kumaleko we-epitaxial kwaye liphucule ukusebenza kakuhle kokukhupha ukukhanya ngokusebenzisa isakhiwo esitsha. Esi sakhiwo sitsha sithintela utshintsho loxinzelelo lomzimba lwe-Micro LED phantsi kwayo nayiphi na indawo yombane yangaphandle okanye isakhiwo. Ngenxa yoko, nokuba i-Micro LED encinci, isakhiwo esitsha sinciphisa kakhulu ilahleko zokuphinda zibuyele kumphezulu ezingasebenzisi imisebe ngelixa sigcina ukusebenza kakuhle kokukhupha ukukhanya okuphezulu ngaphandle kwesidingo seenkqubo zokudlulisa ukukhanya.

Iqela liphumelele ukuqinisekisa ukusetyenziswa kobuchwepheshe be-Micro LED obusebenzayo nobucocekileyo kwizixhobo eziluhlaza okwesibhakabhaka, eziluhlaza okwe-gallium nitride, nezibomvu. Kwixesha elizayo, obu buchwepheshe bunamandla okuvelisa izibonisi ze-Micro LED ezinemibala epheleleyo ze-gallium nitride.