Micro LED is considered to be the next generation display technology with its excellent performance in contrast, low energy consumption, quick response time and wide viewing angle. In January 2018, Samsung released the first Micro LED modular TV, “The Wall,” and other leading companies like Apple and Sony have also been investing in the technology development to push the application for end-market. If the obstacles of mass transfer technology and after process repairing could be overcome, it is forecasted that in five years Micro LED will be in the market. According to the estimation by LEDinside, the revenue of Micro LED and Mini LED will reach US$1.38 billion by 2022.