E ai ki ngā pūrongo hou mai i ngā pāpāho o Kōrea ki te Tonga, kua pānuitia e te Korea Photonics Technology Institute (KOPTI) te whanaketanga angitu o te hangarau Micro LED whai hua, pai hoki. Ka taea te pupuri i te whai huatanga matū ā-roto o te Micro LED i roto i te whānuitanga o te 90%, ahakoa te rahi o te maramara, te rerekētanga rānei o te kiato o te iahiko werohanga.

Whakaahua me te pihi tukunga o te hiko-ngaohiko Micro LED 20μm (whiwhinga whakaahua: KOPTI)

I whakawhanakehia ngātahitia tēnei hangarau Micro LED e te tīma a Tākuta Jong hyup Baek o te Tari Whakaaturanga Optical Semiconductor, te tīma ZOGAN Semi i arahina e Tākuta Woong ryeol Ryu, me Ahorangi Jong in Shim o te Tari Nano-Optoelectronics i Te Whare Wānanga o Hanyang. Ka arohia e te hua te take o te hekenga tere o te whai huatanga o te tukunga mārama i roto i ngā Micro LED nā te iti haere o te rahi o ngā maramara me te piki haere o ngā ia werohanga.

Kua kitea ko ngā rama LED iti kei raro iho i te 20μm te rahi, ehara i te mea ka tere te hekenga o te pai o te tukunga mārama, engari ka whakaatu hoki i ngā ngaronga whakakotahitanga kore-ira nui i roto i te awhe iti o te iahiko (0.01A/cm² ki te 1A/cm²) e hiahiatia ana mō te whakahaere i ngā panera whakaaturanga. I tēnei wā, kei te whakaitihia e te umanga tēnei take mā roto i ngā tukanga whakakore i te taha o te maramara, engari kāore e tino whakatau i te raruraru.

Ka rerekē te whai huatanga matū ā-roto (IQE) o te rama iti kikorangi 20μm me te 10μm i runga i te mātotoru o te iahiko.

E whakamārama ana a KOPTI kua whakaitihia e te tīma rangahau te taumahatanga i roto i te paparanga epitaxial, ā, kua whakapai ake i te whai huatanga o te tukunga mārama mā te whakatinana i tētahi hanganga hou. Ka pehia e tēnei hanganga hou ngā rerekētanga ahotea ā-tinana o te Micro LED i raro i tētahi mara hiko o waho, i tētahi hanganga rānei. Nō reira, ahakoa he iti ake te rahi o te Micro LED, ka whakaitihia e te hanganga hou ngā ngaronga whakakotahitanga kore-irahiko o te mata, me te pupuri tonu i te whai huatanga o te tukunga mārama teitei me te kore e hiahiatia he tukanga whakakore.

Kua whakamanahia e te tīma te whakamahinga o te hangarau Micro LED whai hua, ātaahua hoki i roto i ngā taputapu kikorangi, kakariki gallium nitride, me te whero. I te heke mai, kei tēnei hangarau te kaha ki te whakaputa i ngā whakaaturanga Micro LED gallium nitride tae-katoa.