Sekureva kwemishumo ichangobva kubuda kubva kunhau dzekuSouth Korea, Korea Photonics Technology Institute (KOPTI) yakazivisa kubudirira kwekuvandudzwa kwetekinoroji yeMicro LED inoshanda zvakanaka uye yakanaka. Kushanda zvakanaka kwemukati meMicro LED kunogona kuchengetedzwa mukati me90%, zvisinei nehukuru hwechip kana huwandu hwakasiyana hweinjection current.

Mufananidzo we 20μm Micro LED current-voltage current uye emission curve (mufananidzo wakapihwa: KOPTI)

Tekinoroji iyi yeMicro LED yakagadzirwa pamwe chete nechikwata chaDr. Jong Hyup Baek cheOptical Semiconductor Display Department, chikwata cheZOGAN Semi chinotungamirwa naDr. Woong ryeol Ryu, naProfessor Jong in Shim veDhipatimendi reNano-Optoelectronics paHanyang University. Chigadzirwa ichi chinogadzirisa nyaya yekudzikira nekukurumidza kwekushanda kwechiedza mumaMicro LED nekuda kwekudzikira kwehukuru hwemachip uye kuwedzera kwemagetsi ekuisa majekiseni.

Zvakaonekwa kuti maMicro LED ari pasi pe20μm muhukuru haangogumiri pakudzikira kwekushanda kwechiedza chete asiwo anoratidza kurasikirwa kukuru kwe recombination isina radiation mukati me low current range (0.01A/cm² kusvika 1A/cm²) inodiwa pakufambisa ma display panels. Parizvino, indasitiri iyi iri kuderedza dambudziko iri kuburikidza ne passivation processes kudivi re chip, asi haisiriyo inogadzirisa dambudziko iri zvakanyanya.

Kushanda zvakanaka kwemukati me quantum (IQE) kwe 20μm ne 10μm blue Micro LED kunosiyana zvichienderana nehuwandu hwemazuva ano.

KOPTI inotsanangura kuti chikwata chekutsvagisa chakaderedza kumanikidzwa kwe epitaxial layer uye chakavandudza kushanda zvakanaka kwechiedza nekushandisa chimiro chitsva. Chimiro chitsva ichi chinodzvinyirira kusiyana kwekumanikidzwa kweMicro LED pasi pesimba remagetsi rekunze kana chimiro. Nekuda kweizvozvo, kunyangwe nehukuru hudiki hweMicro LED, chimiro chitsva chinoderedza zvakanyanya kurasikirwa kwenzvimbo isingasvibisi chiedza uku ichichengetedza kushanda zvakanaka kwechiedza pasina chikonzero chekufamba.

Chikwata ichi chakabudirira kusimbisa kushandiswa kwetekinoroji yeMicro LED inoshanda uye yakanaka mumidziyo yebhuruu, gallium nitride green, uye tsvuku. Mune ramangwana, tekinoroji iyi ine mukana wekugadzira gallium nitride Micro LED displays ine mavara akazara.