Fig 1.
Proposed analysis framework.
Fig 2.
Illustration of patent technical code co-occurrence frequencies.
Fig 3.
Schematic diagram for identifying key industry technology codes.
Fig 4.
Depiction of key path in knowledge diffusion.
Table 1.
Correlation coefficient matrix of enterprise patent code (partial display due to space constraints).
Table 2.
Subclassification of major patent holders in different technology fields.
Table 3.
Core technology codes in technology communities (listing the most important technology codes (Top 5)).
Table 4.
Representative sample of technology codes across various enterprises.
Fig 5.
Technology—Enterprise advantageous map (partial display due to space constraints).
Table 5.
List of bottleneck technologies and enterprises in the electronic manufacturing industry.
Table 6.
Number of nodes and IPC codes categories in key path of bottleneck technologies.
Fig 6.
Evolutionary trend of IPC codes in lithography equipment technology.
Fig 7.
Evolutionary trend of IPC codes in preparation of conductive layers equipment.
Fig 8.
Evolutionary trend of IPC codes in preparation of plasma etching equipment.
Fig 9.
Evolutionary trend of IPC codes in roughness measurement technology.
Fig 10.
Evolutionary trend of IPC codes in fault detection of wafer chips technology.
Fig 11.
Evolutionary trend of IPC codes in materials of Wacker.
Fig 12.
Evolutionary trend of IPC codes in materials of Nitto Denko.
Fig 13.
Evolutionary trend of IPC codes in materials from of Entegris.
Fig 14.
Evolutionary trend of IPC codes in chip for mobile communication devices.
Fig 15.
Evolutionary trend of IPC codes in a computer chip.
Fig 16.
Evolutionary trend of IPC codes in a memory chip.