Compared with traditional technology, printed electronic technology has many advantages: simple process and fewer processes; new products and new applications (which cannot be achieved by traditional technology); additive manufacturing (environmental protection and pollution-free); low cost (simple process and production High efficiency); flexibility (applicable to various substrates) and large area (roll-to-roll printing production), etc.
The key point of printed electronics technology is mainly nano new materials + material processing technology.
Nano-scale silver paste can reduce the sintering temperature to a temperature that ordinary plastics or even paper can tolerate, which really opens the door for printed electronics to large-area, flexible, and low-cost electronic systems.
The main characteristics of silk screen silver paste are as follows: high conductivity, low processing temperature; good bonding force, with a bonding force of 5B with PET and paper materials; good printability, smooth printed circuit edges and flat surface; a printing thickness of 8m Around, the cost is relatively low.
It can be used for flexible film circuits to manufacture smart carpets, flexible keyboard circuits, and flexible electrode circuits for medical use.
It can also be applied to multi-layer printed flexible circuit, four-layer Intel Miniboard circuit prepared by multi-layer printed flexible circuit technology: (a) CAD design drawing, (b) resistance test from bottom to top, (c) and (d) physical display .
The Internet of Things-the production of environmentally friendly RFID electronic labels also embodies the silver paste printing technology. The scale of the electronic label market has exceeded 40 billion, and it is used in logistics, clothing, anti-counterfeiting, and unmanned retail. It has grown rapidly in recent years (EU de-plasticizing order, Japan 2025 plan, Cainiao network 100 billion plan). Silver paste printing has technical advantages, printing fragile labels on paper and film substrates, with high yield and high profit.
Printed electronics applications
Printed electronics has a wide range of applications, mainly for conductive circuit printing: smart tag antennas, touch screens, circuit boards, etc. It is characterized by flexibility, simple process and environmental protection. It has basically been achieved and is in the market promotion stage. The materials used are mainly metals and conductive polymers.
The current challenges include: improving conductivity, popularizing applications, transparency, etc. In addition, it can also be applied in the energy field: solar cells and paper batteries; printed field effect transistors (TFT): display driving, simple circuit control, and storage of information; light emission and display: organic light-emitting devices (OLED/PLED).
Other applications include: the application of printed silver paste in smart packaging, the preparation of stretchable circuits by printing silver paste, and the preparation of flexible LED displays by silver paste printing. It can also be used in textile and electronics industries.