According to LEDinside, the global market size of micro LED is expected to grow to US $1.12 billion in 2020 and US $3.18 billion in 2025. In the end, a variety of products (BLU and RGB displays) with micro / mini LEDs as individual pixels are expected to be introduced to the market. However, technologies that can deliver large quantities of LED chips to the substrate at a time are still under development, and technologies for repairing defective mini LED chips are needed.