Korea Develops Successful Nano Conductive Ink

Korea Develops Successful Nano Conductive Ink

ABC nanotechnology company in Daejeon, South Korea, has successfully developed a nano-conductive ink that can be applied to rapidly developing wireless RFID tags, printed circuit boards (PCBs), and flexible printed circuit boards (FPCBs). Can be used to print electromagnetic shielding materials.
ABC Nanotechnology uses nanosilver as the main body of conductive ink. The finished conductive ink is a colloid, the solid content is less than 30%, and the metallic silver is evenly dispersed in the colloid with a diameter of less than 25 nanometers, so that the ink has an ideal resistivity. The company also showed equipment for printing circuit boards using this ink. The traditional FPCB processing process goes through six processes. At least 90% of the copper raw materials are discarded during this separation process. The use of conductive ink can eliminate waste of materials and reduce the number of processes to two, eliminating the need for water-washing of substrate residues. This can increase economic efficiency, significantly reduce manufacturing costs, and reduce environmental pollution in the manufacturing process.
Early conductive ink prototypes were formed in the 1990s, mainly to solve the cost of electronic products, especially RFID. Experiments have shown that conductive ink can not only print circuit boards on the frequency used by RFID chips, but also the antenna printed with conductive ink has the same performance as traditional copper coils. The use of conductive ink can not only print the RFID circuit, but also print the antenna at the same time, which is faster and cheaper than traditional printed foil manufacturing processes such as foil or etching.
The South Korean industry predicts that the market size of RFID devices is expected to reach 10 billion U.S. dollars by 2010 and replace existing bar code and magnetic anti-theft devices. At the same time, the market size of FPCB for conductive inks will also increase significantly, and the market share is expected to reach 180 million U.S. dollars. In this context, the conductive ink market has a promising future.

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