摘要： Micro-LED is considered as the next generation display technology and has got the attention of many research groups and companies in the world. It is a kind of display consists of microscopic LEDs integrated on driving circuit. And it has many advantages such as high brightness, low power consumption, quick response, wide viewing angle, self-emitting, long lifetime, good contrast, and due to its micro size, it has extremely high resolution which is really suitable for micro-display like VR and AR. However, there are still some problems need to be solved before it widely used in display market. In today's trend of pursuing colorization high resolution and high contrast ratio in display field, achieving high quality and high efficiency full- color display is one of the most important challenge for Micro- LED applications. In this paper, several feasible techniques of full-color Micro-LEDs are investigated.