Abstract: Interdisciplinary innovation is a prominent feature of knowledge intensive industries. A thorough understanding of the interdisciplinary innovation mechanism is an important issue to promote rapid innovation of knowledge intensive technologies and accelerate the self-reliance of high-level science and technology. Taking 42785 chip manufacturing patents from 2000 to 2020 as an example, this paper discusses the impact mechanism of multidisciplinary intersection on the technological innovation value of knowledge intensive industries based on knowledge management theory. The results show that: (1) there is a significant inverse "U" relationship between the balance of the discipline system and the value of technological innovation, that is, "innovation comes from the edge of chaos". Compared with the "no center" and "absolute center" disciplinary interaction models, the "dominant auxiliary" disciplinary interaction model is more conducive to the promotion of technological innovation value. (2) The difference of subject content has a positive role in promoting the value of technological innovation. (3) There is an inverse "U" relationship between the diversity of disciplines and the value of technological innovation. The research conclusion shows that only by dialectically applying the interdisciplinary principles and methods can we more effectively accelerate the innovation and breakthrough of major knowledge intensive industries’ technologies represented by chip manufacturing technology.

Key words: S&, T self-reliance and self-improvement