The Strategic Importance of Semiconductor Technology for China
China seems to be very clear about what it must do to emerge victoriously from the ongoing dispute with the US in the crucial semiconductor arena. Without 100% Chinese advanced chips, its military capacity, artificial intelligence (AI) development, and the competitiveness of its technology companies will inevitably suffer in the medium term. To address this, China urgently needs to develop its own extreme ultraviolet (EUV) photolithography equipment, the essential machines for producing cutting-edge integrated circuits. However, realizing this goal is no easy task.
Reverse Engineering and Innovation
Engineers from prominent Chinese companies like Huawei, SMIC, and SMEE, along with researchers from institutions such as Tsinghua University and the Chinese Academy of Sciences, are employing reverse engineering techniques on ASML’s deep ultraviolet photolithography (UVP) equipment. While some may view this as mere copying, it highlights China’s undeniable innovative capacity and determination to advance its technological landscape.
Filing Patents to Safeguard and Compete
As of March, Huawei, SMEE, and Tsinghua University have registered an unusually high volume of patents related to photolithography technology. This strategy primarily aims to protect their intellectual property; however, it also reflects an intention to disrupt ASML and its key suppliers, such as ZEISS and TRUMPF. Through these patents, China is positioning itself to take ownership of the technological paths that ASML may explore in the future.
Key Innovations in SSMB-UVE Technology
Among the key patents are those from Tsinghua University that delve into SSMB-UVE technology, or Steady-State Micro-Bunching-UVE. This technology aims to generate essential UVE radiation via synchrotrons, circular particle accelerators that analyze atomic properties.
Pivotal Developments in Particle Accelerators
One significant patent details how to organize electrons within a particle accelerator to emit coherent light with a wavelength of 13.5 nm. This could give China a significant edge if the semiconductor industry shifts away from ASML’s thermal limits in laser vaporization techniques to accelerator-based methods, allowing for the requisite 1,000 watts of power needed to implement Hyper-NA technology.
Advancements in UVE Radiation Interference Lithography
But it’s not just about particle accelerators. Huawei and SiCarrier have been busy registering multiple patents for UVE radiation interference lithography, specifically LDP-type ultraviolet light sources (laser-induced discharge). These innovations would enable nanometer-resolution patterns without relying on the complex lenses produced by ZEISS. Should ASML, ZEISS, or other Western firms pursue similar technologies, they may find themselves negotiating intellectual property exchanges or struggling to develop alternative solutions, which is inherently challenging.
The Road Ahead
The ongoing developments in China’s semiconductor landscape represent both a challenge and an opportunity for global tech dynamics. As China fortifies its intellectual property in this sector, Western companies will need to stay vigilant and innovative to maintain their competitive edge.