From November 14 to 16, the 27th China International Hi-Tech Fair (CHTF) was held in Shenzhen. Shenzhen Polytechnic University (SZPU) carefully selected and organized 28 projects for exhibition, covering fields such as integrated circuits, robotics, new energy, and intelligent manufacturing. The exhibits showcased SZPU’s latest achievements in keeping pace with industrial frontiers, supporting enterprise-driven innovation at the source, accelerating the market transformation of research outcomes, and advancing innovation and entrepreneurship education.

Xu Jianling, Deputy Secretary of the CPC Committee and President of SZPU, listens to project briefings at the exhibition site.

AI Fully Automated Phone Screen Protector Machine Steals the Spotlight

At this year’s CHTF, SZPU’s booth drew significant attention with the debut of the “Infinite Film Power” project—an AI fully automated phone screen protector machine. As a Gold Award–winning project of the China International College Students’ Innovation Competition, the project aims to become a global leader in the unmanned phone screen protection industry.Developed by a joint team of students and enterprises under the leadership of Dr. Zheng Fucheng, the device targets the mobile phone aftermarket, featuring 90-second rapid application and global intelligent operations and maintenance as its core advantages. The system overcomes key technical challenges such as multi-module coordinated cleaning and adaptive steady-state adhesion, completing screen protection in as fast as 90 seconds. With a capacity of 5,400 screen protectors, the machine supports 24/7 unattended operation. Integrated with a cloud-native SaaS platform, it enables intelligent consumables management and remote operation and maintenance—effectively addressing pain points in overseas markets such as high labor costs, low efficiency, unstable quality, and strong unmet demand.

The “Infinite Film Power” AI fully automated phone screen protector machine attracts wide attention.

To date, “Infinite Film Power” has been exported to 19 countries and regions, with each unit demonstrating strong overseas performance and an average payback period of just three months. The project has filed more than 20 international PCT, invention, and design patents, and has obtained multiple international certifications, including FCC (United States), CE (European Union), and PSE (Japan). According to the project leader, the team will continue to expand in the mobile phone aftermarket, develop products such as fully automated AI phone case customization machines, create unmanned 3C service scenarios, build a model combining proprietary and third-party channels, and establish overseas operation centers—driving the global development of the unmanned mobile phone aftermarket.

SZPU’s exhibition area attracted a steady stream of visitors.

At the exhibition site, a number of featured projects drew widespread attention, including PVD Epitaxial Technology Equipment for Research and Industrialization and Semi-Insulating Resistivity Measurement Systems.The PVD epitaxial technology equipment project employs physical vapor deposition (PVD) technology to fabricate single-crystal epitaxial films. Since 2012, the project team has been deeply engaged in this field and has developed and optimized multiple key components to meet engineering and industrialization requirements. Focusing on third-generation semiconductor GaN single crystals, the team achieved in-situ atomic-level detection under high-vacuum conditions, enabling precise control of the GaN film deposition process at the atomic scale and exploration of critical process windows for epitaxial growth. In conventional processes, GaN epitaxy is commonly realized using MOCVD, which is prone to introducing carbon and hydrogen impurities. By contrast, the PVD-based epitaxial approach adopted in this project effectively avoids carbon–hydrogen contamination and significantly improves material purity. Key research directions include the development of dedicated epitaxial power supplies to support high-quality epitaxial processes, as well as GaN epitaxial growth kinetics studies to reveal how atomic-scale defects influence electrical properties such as low defect density, low leakage current, and high breakdown voltage. In terms of material sources, the system integrates liquid gallium sources, ionized nitrogen sources, and solid targets, meeting diverse process requirements including AlGaN and InGaN film fabrication and substrate doping.The semi-insulating resistivity measurement system focuses on the development and production of testing equipment based on TDCM (Transient Dynamic Capacitance Measurement) theory. It enables non-contact, high-precision measurement of key electrical parameters—such as resistivity, mobility, and carrier concentration—in semiconductor materials including GaAs, SiC, and GaN. By utilizing dynamic capacitance principles, the system performs non-destructive testing of material properties, avoiding sample damage associated with traditional contact-based methods and significantly improving testing efficiency and accuracy.

In recent years, SZPU has adhered to an application-oriented research philosophy that is both grounded in real-world needs and aligned with cutting-edge innovation, continuously strengthening its research and innovation capacity. The university has actively deepened collaboration among industry, academia, research, and application, and has fully leveraged platforms such as the China Hi-Tech Fair—widely recognized as “China’s No. 1 technology exhibition”—to promote the commercialization of scientific and technological achievements. Through these efforts, SZPU has explored and established a dual-driven technology transfer and trading system that integrates online and offline channels, as well as professionalization and market-oriented mechanisms.

(Reported by Zhang Lei, Research Office / Publicity Department; Photos by Zhong Wenyu, University Integrated Media Center)