The micro-LED roadmap: status quo and prospects

作者：Chien‐Chung Lin, Yuh‐Renn Wu, Hao‐Chung Kuo, Matthew S. Wong, Steven P. DenBaars, Shuji Nakamura, Ayush Pandey, Zetian Mi, Pengfei Tian, Kazuhiro Ohkawa, Daisuke Iida, Tao Wang, Yuefei Cai, Jie Bai, Zhiyong Yang, Yizhou Qian, Shin‐Tson Wu, Jung Han, Chen Chen, Zhaojun Liu, Byung‐Ryool Hyun, Jae‐Hyun Kim, Bongkyun Jang, Hyeon‐Don Kim, Hak‐Joo Lee, Ying-Tsang Liu, Yu-Hung Lai, Yun-Li Li, Wanqing Meng, Haoliang Shen, Bin Liu, Xinran Wang, Kai-Ling Liang, Cheng-Jhih Luo, Yen‐Hsiang Fang · 发表于：Journal of Physics Photonics · 年份：2023 · DOI：10.1088/2515-7647/acf972 · 被引用次数：134 · 研究领域：GaN-based semiconductor devices and materials、Quantum Dots Synthesis And Properties、ZnO doping and properties

Abstract Micro light-emitting diode (micro-LED) will play an important role in the future generation of smart displays. They are found very attractive in many applications, such as maskless lithography, biosensor, augmented reality (AR)/mixed reality etc, at the same time. A monitor that can fulfill saturated color rendering, high display resolution, and fast response time is highly desirable, and the micro-LED-based technology could be our best chance to meet these requirements. At present, semiconductor-based red, green and blue micro-LED chips and color-conversion enhanced micro-LEDs are the major contenders for full-color high-resolution displays. Both technologies need revolutionary ways to perfect the material qualities, fabricate the device, and assemble the individual parts into a system. In this roadmap, we will highlight the current status and challenges of micro-LED-related issues and discuss the possible advances in science and technology that can stand up to the challenges. The innovation in epitaxy, such as the tunnel junction, the direct epitaxy and nitride-based quantum wells for red and ultraviolet, can provide critical solutions to the micro-LED performance in various aspects. The quantum scale structure, like nanowires or nanorods, can be crucial for the scaling of the devices. Meanwhile, the color conversion method, which uses colloidal quantum dot as the active material, can provide a hassle-free way to assemble a large micro-LED array and emphasis the fu...