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"Internet of Things" has become one of the most popular terms today. Bus cards and access cards are everyday examples of IoT applications that have been around for years. Last year, the Shanghai World Expo was successfully held, and its tickets played a crucial role. These seemingly simple tickets incorporated one of the core technologies of the Internet of Things — RFID technology. The RFID electronic tag chip embedded in the ticket was developed by Shanghai Huahong IC Design Co., Ltd. This small chip could track the number of people entering the Expo daily, update in real time, and help manage crowd flow efficiently. It marked one of the largest applications of RFID technology in the global ticket market.
These tiny RFID tags may be unnoticeable, but they bring convenience and efficiency to daily life in subtle ways. Today, let’s step into the Shanghai Zhangjiang IC Development Zone and explore the great wisdom behind this small label.
**Small Label, Big Production**
To create an RFID electronic tag, the first step is to purchase a high-quality RFID chip with a high read rate and large storage capacity. Shanghai Kunrui Electronic Technology Co., Ltd., a well-known company in the Zhangjiang IC Development Zone, has developed Asia's first ultra-high-frequency EPC-certified electronic tag chip — QR2235. This achievement was made possible by their strong R&D team and extensive experience in RFID chip design.
Once a quality chip is selected, it needs to be paired with a suitable antenna and packaged using a cost-effective RFID tag production system. To learn more about this process, the reporter visited Shanghai Jinglu Electronic Technology Co., Ltd. (referred to as "Jinglu") located in the Zhangjiang IC Development Zone. Jinglu has developed the "FLIP-CHIP MOUNTER automatic high-speed flip-chip machine," which is at the forefront of domestic technology and offers the best value for money in China. Its price is less than half of similar foreign equipment, making it ideal for local businesses.
The process of turning the RFID chip and antenna into a functional core is both efficient and precise. The staff simply places a roll of etched or printed antenna on the machine. As the device operates, it automatically feeds the antenna into the system, applies conductive glue, places the chip on each contact point, and then hot-presses them together. Within minutes, the RFID core emerges from the other end, ready for further processing. This streamlined procedure shows how advanced and user-friendly modern RFID manufacturing can be.
With the RFID core in hand, the next step is to give it a stylish exterior. We visited Shanghai Shenbo Intelligent Label Technology Co., Ltd. (referred to as “Shenboâ€) in the Zhangjiang IC Development Zone. As the designer and manufacturer of the first RFID tag in Greater China, Shenbo uses the first MELZER production line in Asia dedicated to RFID smart tags and ticket cards. According to Tang Zhengxing, the general manager of Shenbo, customers only need to explain their needs, and the company's professional team will customize the solution. Their RFID tags are widely used in areas such as smart access control, logistics, anti-counterfeiting, and ticket management.
**Small Label, Big Test**
After visiting these three companies, you now understand the basic process of producing RFID electronic tags. But before we move on, there's one more important step: testing. To ensure that RFID tags perform well in real-world applications, they must go through a series of application tests.
We visited the Shanghai Zhangjiang RFID Application Testing Public Service Platform, also known as the RFID Test Service Platform, located in the Zhangjiang IC Development Zone. Professor Wang Dong explained that RFID systems undergo various tests before deployment. For example, during a label space deployment test, if you want to place an RFID tag on a bottle of mineral water, the question becomes: where should the tag be placed to maximize the reading rate?
Through a special software system developed by the RFID team at Shanghai Jiao Tong University, the reader antenna can be controlled to scan the box. Data analysis then determines the optimal placement for the tag. Since the contents inside the box vary, or the way items are stacked differs, the effect on electromagnetic signals changes accordingly. This kind of detailed testing ensures that RFID tags function reliably in different environments.