Today, outdoor LCD display applications are closely related to our daily lives, including clothing, food, housing, and transportation. With the development of big data and the Internet, commercial advertising promotion displays, digital signage, charging stations, self-service shopping for gas dispensers, parking lot fee management, smart cities and intelligent transportation, government service halls, service signs for tourist attractions, museums, touch queries, national defense and military industry, instrumentation, entertainment and leisure, film and television media, monitoring and command, artificial intelligence, medical equipment Display application scenarios in industrial vision and other fields.