Ngokwemibiko yakamuva evela kwabezindaba baseNingizimu Korea, iKorea Photonics Technology Institute (KOPTI) isimemezele ukuthuthukiswa okuyimpumelelo kobuchwepheshe obusebenza kahle nobucolekileyo beMicro LED.Ukusebenza kahle kwe-quantum yangaphakathi kwe-Micro LED kungagcinwa ngaphakathi kwebanga elingu-90%, kungakhathaliseki ukuthi isayizi ye-chip noma ukuminyana okuhlukile kwamanje komjovo.

20μm Ijika le-Micro LED ye-voltage yamanje nesithombe sokuphuma (ikhredithi yesithombe: KOPTI)

Lobu buchwepheshe be-Micro LED bathuthukiswa ngokuhlanganyela ithimba likaDkt. Jong hyup Baek kusukela ku-Optical Semiconductor Display Department, ithimba le-ZOGAN Semi eliholwa uDkt. Woong ryeol Ryu, kanye noProfessor Jong in Shim ovela eMnyangweni we-Nano-Optoelectronics e-Hanyang University.Umkhiqizo ubhekana nenkinga yokwehla ngokushesha kokukhishwa kokukhanya kokusebenza kahle kuma-Micro LED ngenxa yokuncipha kwamasayizi we-chip kanye nokukhuphuka kwemisinga yomjovo.

Kutholwe ukuthi ama-Micro LED angaphansi kuka-20μm ngosayizi awagcini nje ngokuba nokuncipha okusheshayo kokusebenza kahle kokukhipha ukukhanya kodwa futhi abonisa ukulahlekelwa okuphawulekayo kokuhlanganiswa kabusha okungashisi phakathi kwebanga eliphansi lamanje (0.01A/cm² kuya ku-1A/cm²) elidingekayo ekushayeleni amaphaneli wokubonisa. .Okwamanje, imboni inciphisa kancane le nkinga ngezinqubo zokudlula ohlangothini lwe-chip, kodwa ayixazululi inkinga ngokuyisisekelo.

Ukusebenza kahle kwe-quantum yangaphakathi (IQE) ye-20μm kanye ne-10μm blue Micro LED iyahlukahluka kuye ngokuminyana kwamanje

I-KOPTI ichaza ukuthi ithimba locwaningo liye lanciphisa ubunzima kungqimba lwe-epitaxial futhi lathuthukisa ukusebenza kahle kokukhishwa kokukhanya ngokusebenzisa isakhiwo esisha.Lesi sakhiwo esisha sicindezela ukuhluka kokucindezeleka ngokomzimba kwe-Micro LED ngaphansi kwanoma iyiphi inkambu kagesi yangaphandle noma isakhiwo.Ngenxa yalokho, ngisho nosayizi omncane we-Micro LED, isakhiwo esisha sinciphisa kakhulu ukulahlekelwa kokuhlanganisa okungeyona imisebe ngenkathi kugcinwa ukusebenza kahle kokukhipha ukukhanya ngaphandle kwesidingo sezinqubo zokudlula.

Ithimba liqinisekise ngempumelelo ukusetshenziswa kobuchwepheshe be-Micro LED obusebenza kahle futhi obuhle kumadivayisi aluhlaza okwesibhakabhaka, i-gallium nitride eluhlaza, kanye namadivayisi abomvu.Ngokuzayo, lobu buchwepheshe bunamandla okukhiqiza izibonisi ezinemibala egcwele ye-gallium nitride Micro LED.