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Huang YM, Chen JH, Liou YH, James Singh K, Tsai WC, Han J, Lin CJ, Kao TS, Lin CC, Chen SC, Kuo HC. High-Uniform and High-Efficient Color Conversion Nanoporous GaN-Based Micro-LED Display with Embedded Quantum Dots. NANOMATERIALS 2021; 11:nano11102696. [PMID: 34685137 PMCID: PMC8537299 DOI: 10.3390/nano11102696] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/06/2021] [Accepted: 10/08/2021] [Indexed: 01/26/2023]
Abstract
Quantum dot (QD)-based RGB micro-LED technology is seen as one of the most promising approaches towards full color micro-LED displays. In this work, we present a novel nanoporous GaN (NP-GaN) structure that can scatter light and host QDs, as well as a new type of micro-LED array based on an NP-GaN embedded with QDs. Compared to typical QD films, this structure can significantly enhance the light absorption and stability of QDs. As a result, the green and red QDs exhibited light conversion efficiencies of 90.3% and 96.1% respectively, leading to improvements to the luminous uniformity of the green and red subpixels by 90.7% and 91.2% respectively. This study provides a viable pathway to develop high-uniform and high-efficient color conversion micro-LED displays.
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Affiliation(s)
- Yu-Ming Huang
- Department of Photonics, Institute of Electro-Optical Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (Y.-M.H.); (J.-H.C.); (Y.-H.L.); (K.J.S.); (W.-C.T.); (C.-J.L.); (T.-S.K.)
- Institute of Photonic System, National Yang Ming Chiao Tung University, Tainan 71150, Taiwan
- Semiconductor Research Center, Hon Hai Research Institute, Taipei 11492, Taiwan
| | - Jo-Hsiang Chen
- Department of Photonics, Institute of Electro-Optical Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (Y.-M.H.); (J.-H.C.); (Y.-H.L.); (K.J.S.); (W.-C.T.); (C.-J.L.); (T.-S.K.)
| | - Yu-Hau Liou
- Department of Photonics, Institute of Electro-Optical Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (Y.-M.H.); (J.-H.C.); (Y.-H.L.); (K.J.S.); (W.-C.T.); (C.-J.L.); (T.-S.K.)
| | - Konthoujam James Singh
- Department of Photonics, Institute of Electro-Optical Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (Y.-M.H.); (J.-H.C.); (Y.-H.L.); (K.J.S.); (W.-C.T.); (C.-J.L.); (T.-S.K.)
| | - Wei-Cheng Tsai
- Department of Photonics, Institute of Electro-Optical Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (Y.-M.H.); (J.-H.C.); (Y.-H.L.); (K.J.S.); (W.-C.T.); (C.-J.L.); (T.-S.K.)
| | - Jung Han
- Department of Electrical Engineering, Yale University, New Haven, CT 06520, USA;
| | - Chun-Jung Lin
- Department of Photonics, Institute of Electro-Optical Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (Y.-M.H.); (J.-H.C.); (Y.-H.L.); (K.J.S.); (W.-C.T.); (C.-J.L.); (T.-S.K.)
| | - Tsung-Sheng Kao
- Department of Photonics, Institute of Electro-Optical Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (Y.-M.H.); (J.-H.C.); (Y.-H.L.); (K.J.S.); (W.-C.T.); (C.-J.L.); (T.-S.K.)
| | - Chien-Chung Lin
- Institute of Photonic System, National Yang Ming Chiao Tung University, Tainan 71150, Taiwan
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 10617, Taiwan
- Correspondence: (C.-C.L.); (S.-C.C.); (H.-C.K.)
| | - Shih-Chen Chen
- Semiconductor Research Center, Hon Hai Research Institute, Taipei 11492, Taiwan
- Correspondence: (C.-C.L.); (S.-C.C.); (H.-C.K.)
| | - Hao-Chung Kuo
- Department of Photonics, Institute of Electro-Optical Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (Y.-M.H.); (J.-H.C.); (Y.-H.L.); (K.J.S.); (W.-C.T.); (C.-J.L.); (T.-S.K.)
- Semiconductor Research Center, Hon Hai Research Institute, Taipei 11492, Taiwan
- Correspondence: (C.-C.L.); (S.-C.C.); (H.-C.K.)
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