Radio frequency identification (RFID) technology has the characteristics of complete information input and processing without manual contact, fast and convenient operation, rapid development, etc. It is widely used in production, logistics, transportation, medical treatment, food and anti-counterfeiting. Radio frequency identification systems are usually composed of transponders and readers.

The electronic tag is one of many forms of transponders. It can be understood as a transponder with a film structure, which has the characteristics of convenient use, small size, light and thin, and can be embedded in products. In the future, more and more electronic tags will be used in radio frequency identification systems.

The structure of electronic tags is developing in the direction of light, thin, small and soft. In this respect, flexible electronic devices have unmatched advantages over other materials. Therefore, the future development of RFID electronic tags is likely to be combined with flexible electronic manufacturing, making the use of RFID electronic tags more widespread and convenient. In addition, it can greatly reduce costs and bring higher benefits. This is also one of the future development directions of flexible electronics manufacturing.

Making low-cost flexible electronic tags has two meanings. On the one hand, it is a useful attempt to make flexible electronic devices. Electronic circuits and electronic devices are developing in the direction of “light, thin, small, and soft”, and the development and research of flexible electronic circuits and electronic devices are more noticeable.

For example, the flexible circuit board that can be produced now is a circuit that contains delicate wires and is made of a thin, pliable polymer film. It can be applied to surface mounting technology and can be bent into countless desired shapes.

The flexible circuit using SMT technology is very thin, lightweight, and the insulation thickness is less than 25 microns. This flexible circuit can be bent arbitrarily and can be bent into a cylinder to make full use of three-dimensional volume.

It breaks the traditional mindset of the inherent use area, thereby forming the ability to make full use of the volume shape, which can greatly increase the effective use density in the current method and form a high-density assembly form. Compliant with the development trend of “flexibility” of electronic products.

On the other hand, it can accelerate the process of recognition and development of radio frequency identification technology in China. In radio frequency identification systems, transponders are the key technology. Electronic tags are one of many forms of RFID transponders, and flexible electronic tags are more suitable for more occasions. The reduction in the cost of electronic tags will greatly promote the real wide application of radio frequency identification technology.