Creative Materials, Inc., has developed a line of anisotropic conductive adhesives that are recommended for a wide range of applications, including LCD manufacturing, surface-mount connections in electronic devices, and RFID antenna assembly. Commonly known as Z-axis adhesives, these products are extremely useful in applications where high signal density is required in a smaller overall package.
Anisotropic or "Z-axis" adhesives are conductive in the Z-axis and are non-conductive in the X- and Y-axis. Visualize a three-dimensional space, where the X and Y axes represent the horizontal surface and the Z axis is the vertical interface with the surface. The Z axis can be thought of as the direction of compression. During the curing process, the particles in an anisotropic conductive adhesive become stacked in a vertical configuration, providing enhanced conductivity for a component that is mounted to the surface, while remaining electrically insulating on the X and Y axes. This property provides increased conductivity within very tight physical areas, a requirement in consumer electronics manufacture, in such products as mobile phones, MP3 players, and CMOS cameras.
Anisotropic conductive adhesives are used in RFID manufacture, for flat panel displays, and in the assembly of semiconductor modules. The applications are myriad, and new lower-temperature and faster curing methods have increased the breadth of applications. Among the advantages of these new developments are faster throughput and lower overall cost. Greater production efficiency can be achieved using these products since the anisotropic product itself provides alignment of the conductive particles, without the user having to create individual connections. These products provide superior conductivity, excellent adhesion to a variety of substrates, and are less sensitive to handling and extremes in ambient conditions.
For more see: http://www.creativematerials.com.
For more attend: Printed Electronics USA 2011.