Ngokusho kwemibiko yakamuva evela kwabezindaba baseNingizimu Korea, i-Korea Photonics Technology Institute (KOPTI) imemezele intuthuko ephumelelayo yobuchwepheshe be-Micro LED obusebenza kahle futhi obuhle. Ukusebenza kahle kwe-quantum yangaphakathi ye-Micro LED kungagcinwa ngaphakathi kwebanga elingu-90%, kungakhathaliseki ukuthi usayizi we-chip noma ubuningi bamanje obuhlukile bomjovo.

Ijika lamandla kagesi lamanje le-Micro LED elingu-20μm kanye nesithombe sokukhishwa (isithombe sivela ku: KOPTI)

Lobu buchwepheshe be-Micro LED bathuthukiswa ngokubambisana yithimba likaDkt. Jong Hyup Baek elivela kuMnyango Wokubonisa i-Optical Semiconductor, ithimba le-ZOGAN Semi eliholwa nguDkt. Woong ryeol Ryu, kanye noSolwazi Jong in Shim abavela kuMnyango we-Nano-Optoelectronics eNyuvesi yaseHanyang. Lo mkhiqizo ubhekana nenkinga yokuncipha okusheshayo kokusebenza kahle kokukhishwa kokukhanya kuma-Micro LED ngenxa yokuncipha kosayizi be-chip kanye nokwanda kwemisinga yokujova.

Kutholakale ukuthi ama-Micro LED angaphansi kuka-20μm ngobukhulu awagcini nje ngokuncipha okusheshayo ekusebenzeni kahle kokukhishwa kokukhanya kodwa futhi abonisa ukulahlekelwa okukhulu kokubuyiselwa kwe-non-radiative ngaphakathi kobubanzi bamanje obuphansi (0.01A/cm² kuya ku-1A/cm²) okudingekayo ekushayeleni amaphaneli okubonisa. Njengamanje, imboni inciphisa kancane le nkinga ngezinqubo zokudlulisa ohlangothini lwe-chip, kodwa ayixazululi inkinga ngokuyisisekelo.

Ukusebenza kahle kwe-quantum yangaphakathi (IQE) kwe-20μm kanye ne-10μm blue Micro LED kuyahlukahluka ngokuya ngobuningi bamanje

I-KOPTI ichaza ukuthi ithimba locwaningo linciphise ukucindezeleka kungqimba lwe-epitaxial futhi lathuthukisa ukusebenza kahle kokukhishwa kokukhanya ngokusebenzisa isakhiwo esisha. Lesi sakhiwo esisha sicindezela ukushintshashintsha kokucindezeleka ngokomzimba kwe-Micro LED ngaphansi kwanoma iyiphi insimu kagesi yangaphandle noma isakhiwo. Ngenxa yalokho, ngisho noma usayizi we-Micro LED omncane, isakhiwo esisha sinciphisa kakhulu ukulahlekelwa kokubuyiselwa kwe-surface non-radiative ngenkathi sigcina ukusebenza kahle kokukhishwa kokukhanya okuphezulu ngaphandle kwesidingo sezinqubo zokudlulisa ukukhanya.

Ithimba liqinisekise ngempumelelo ukusetshenziswa kobuchwepheshe be-Micro LED obusebenza kahle futhi obuhle ngamadivayisi aluhlaza okwesibhakabhaka, aluhlaza okotshani be-gallium nitride, nabomvu. Esikhathini esizayo, lobu buchwepheshe bunamandla okukhiqiza izibonisi ze-Micro LED ze-gallium nitride ezinemibala egcwele.