On the basis of a comprehensive introduction to OLED commercial materials, devices, classification, development status and prospects, this book mainly focuses on the patent layout of relevant companies at home and abroad around the commercialization of materials and devices. It not only comprehensively summarizes the core patents of major OLED companies in materials and devices, but also focuses on the analysis of the current patent distribution and development trend of the entire OLED industry. This book provides an outlook and overview of the entire OLED field and summarizes the future development trends and industry suggestions of this technology. The book is a comprehensive guide on OLED technology, offering insights into patents, market trends, and practical applications for industry professionals, startups, and academics.