Abstract: As one of the few hundred-billion-dollar industries in the electronic information field, Smart Display is one of the key development directions of strategic emerging industries in the era of informationization and intelligence. As a high-threshold technology industry, technological innovation is the driving force for the sustainable development of the industry. Patents can most intuitively reflect the output of industrial technological innovation. This article uses patent information analysis methods to analyze the patent situation of the OLED panel display industry, including patent application trends, patent application countries, patent applicants, patent technology distribution, core patents and technology roadmaps, etc. It is found that the current research on OLED panel display technology is still in a relatively active stage. Although the number of OLED patent applications in China is comparable to that of the United States, Japan, and South Korea, and even surpassed them in certain subdivisions, the scale effect thereof needs to be improved. The innovation and leading ability in OLED display technology of China is relatively weak, lacks core basic patents in the upstream and downstream industrial chain, and is constrained by OLED flat panel display companies in Japan, the United States, and South Korea.

Key words: Smart Display, Organic Light-Emitting Diode（OLED）, Patent Analysis