After years of development, at present, the global LED lighting technology has developed from the pursuit of light efficiency to improve light quality, light quality and multi-functional applications, and the industry has gradually shifted from technology-driven to application-driven. The scale of the industry continues to expand, and the market application field continues to expand, gradually expanding from lighting and display to automotive, medical, agriculture and other fields. Product quality has been steadily improved, and the energy-saving effect of semiconductor lighting has been significantly improved compared with traditional lighting.