Comparative Study on Chinese and Global OLED Industry Based on Patent Data

Against the background of intelligent manufacturing, the development of chip technology has been widely discussed by scholars. The Chinese chip industry is constantly hit upon in the international background, and the reasons behind this exploration are particularly important for the future development of chip technology in the country. To solve this problem, the paper chooses to study the typical OLED technology in the chip industry. This paper uses 14979 patent data of OLED technology, from 1900 to 2017, as the research object. Data are taken from the global patent statistics database (PATSTAT). From the perspective of the annual application numbers and main research content, it is concluded that Chinese OLED technology has been a late starter, with companies mainly choosing the road of importing equipment. OLED technology lacks specific direction in view of the mastered technical patents, and the related technology is mostly in the peripheral activities. Therefore, OLED technology cannot enter the core area of this field. In this paper, the leading technology identification model, based on a PageRank algorithm, is used to identify the leading technology in the global and domestic OLED patents, and we compare the patents’ holders. It is concluded that the Chinese OLED industry cannot occupy a favorable position on the international stage; some research institutes in China have R&D ability, but they lack production facilities. The development of industrialization restricts the sustainable development of related technologies. In view of the above results, this paper provides suggestions from the perspective of researchers, related enterprises, and government and patent protection agencies, in order to promote the development of the Chinese OLED industry and to play a referential role in the growth of China’s chip industry.