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AIST produces radio frequency ID tags by printing

Posted: 25 Oct 2005 ?? ?Print Version ?Bookmark and Share

Keywords:aist? rf? rfid? rf tags? rfid tags?

The National Institute of Advanced Industrial Science and Technology (AIST) has announced the development of a technique to produce radio frequency (RF) tags by printing.

RFID tags are terminals which give and receive information by RF signals, by which existence of and information about objects can be recognized and administrated. Because of their convenience, widespread use of the tags is expected, but their high manufacturing cost is an obstacle at present.

AIST developed a pressure annealing method, by which the electrical resistance of antennas, wirings, and electrodes formed by screen printing can be decreased by more than three orders of magnitude.

With it, they are able to reduce highly sensitive RF tags using the printing method without high-temperature baking. AIST has confirmed that the fabricated tags are highly responsive to RF signals at a range of frequencies between 5 and 40MHz.

Through the annealing method, after printing the antenna and wiring with metallic inks, a pressure annealing process is applied to them without high temperature baking. With this technique, AIST was able to produce RFID tags on flexible substrates entirely by printing. The process is expected to further reduce the cost of the tags and accelerate its widespread use.

RFID tags have attracted a great deal of attention as information terminals that can administer information of objects. They can give, receive, and control information about the objects by RF waves without being in contact with detectors, and can also be remotely-controlled, and they can display their ability for immediate administration of object information. For convenience, RFID tags were intended to be applied to price and baggage tags of general products to administrate their prices and logistics, but the high manufacturing cost of the terminal devices is an obstacle to promoting their widespread use.

With the new technology of making RF tags through printing, they can be prepared together with commercial products at the time of fabrication, as well as the bar codes used at present providing a substantial manufacturing cost reduction.





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