单片集成发光与探测的micro-LED阵列及显示与可见光通信应用

Multifunctional Micro-LED Array Monolithic Integration with Luminescence and Photodetection for Display and Visible Light Communication

摘要:

GaN基micro-LED阵列作为新兴的光源技术,已被证明可以在光通信及显示等领域发挥重要作用。如果阵列中的micro-LED能够探测毗邻区域像素的发光性能,将有望形成单片集成发光探测的多功能micro-LED阵列,从而推进未来物联网技术中满足小型化、低功耗需求的光子集成芯片的发展。文章通过实验验证了InGaN/GaN多量子阱结构可以在不同偏压下实现发光和探测的双重功能,从而证明了micro-LED阵列单片集成发光和实时探测的可行性,并进一步将其应用于高稳定性可见光通信以及显示阵列坏点实时检测中,拓宽了micro-LED阵列集成发光探测多功能的潜在应用领域。

Abstract:

GaN-based micro-LED, as a burgeoning light source technology, has been demonstrated to play an important role in optical communication and display fields, etc. If the pixels in micro-LED array can detect the optical performance of the adjacent pixels, it is expected to realize multifunctional micro-LED array for monolithic integration with light detection, thus promoting the development of photonic integrated chips for Internet of Things technology toward miniaturization and low power consumption. It was experimentally verified that InGaN/GaN MQWs can realize the dual functions of luminescence and detection under different operating voltages, thus proving the feasibility of micro-LED array monolithic integrated luminescence and real-time detection. Moreover, micro-LED array was further applied in high stability visible light communication and real-time detection of dead pixels in display array, which broadens the potential applications of micro-LED array.