Zipperer D.,PolyIC GmbH and Co. KG
International Conference on Digital Printing Technologies | Year: 2012
Touch sensors have replaced keys and controls in many devices and gadgets. In combination with displays very intuitive control possibilities have been created. The most common principles to sense touch are resistive systems and projected-capacitive systems (mutual-capacitance and self-capacitance). These approaches are all based on electrical conductivity of transparent layers. In this paper a new method to attain very thin and flexible touch sensors manufactured by a high resolution roll-to-roll production process on plastic substrate is presented. The conductivity is based on a metallic grid, occupying only a small fraction of the surface and due to structure sizes down to 10μm appearing transparent. Using two layers of such a transparent conductive film (PolyTC) we can process touch sensors in a resistive or in the projected-capacitive setups, being capable of multi-touch sensing. These touch sensors are compatible with conventional image processing controllers. They are flexible and have a total thickness of less than 200μm.
Worle J.,PolyIC GmbH and Co. KG |
Kunststoffe International | Year: 2010
PolyIC has developed a new process for electrode production, which makes it possible to produce high-resolution, thin conductor tracks by a large scale roll-to-roll operation. By producing high-resolution structures in μm scale on thin flexible PET films, not only sufficient conductivity but also sufficient layer transparency can be achieved. Transparency and conductivity can be adjusted to specific customer requirements by adjusting the area occupancy ratio of the conductive material. They do not need to be transparent themselves, since the necessary light transmission is achieved by the high-resolution structuring. This means that the conductive structure occupies only a fraction of the surface, which allows light impermeable but highly conductive materials such as silver or copper to be used. Through careful adjustment of the process parameters, resistivity values of 0.4 to 1 ohm/sq can be achieved with the conductive materials used. The consistently high transparency achievable over a wide wavelength range is another advantage of this new technology.
Zipperer D.,PolyIC GmbH and Co. KG
International Conference on Digital Printing Technologies | Year: 2011
The application of roll-to-roll printing processes for the fabrication of polymer electronics on flexible films enables the mass production of low-cost electronic circuits and components. Being produced by the successive application of thin layered functional structures on flexible polyester film, the products end up being thin and flexible themselves. Example applications are discussed, all manufactured in roll-to-roll printing processes. A 13.56 MHz radio frequency rectifier was combined with an electrochromic display into a "smart object" that reveals the display information when brought into an electromagnetic field of an activator unit. Transparent conductive films on flexible substrates were realized by a high resolution roll-to-roll production process with structure sizes down to 10μm. They are suitable to replace indium tin oxide in applications such as touch screen displays. ©2011 Society for Imaging Science and Technology.
Ludwig K.,PolyIC GmbH and Co. KG |
Kunststoffe International | Year: 2011
Interactive optical labels that can be activated by radio waves are an example of innovative printed electronics with high innovation potential. Such smart labels will in future be used in very diverse areas, such as marketing, brand protection and games with high customer benefit.
Rost H.,PolyIC GmbH and Co. KG |
Ludwig K.,PolyIC GmbH and Co. KG
Coating International | Year: 2014
Printed electronics - i.e. the production of electronic components and products by roll-to-roll processes - has left the laboratory stage and shows first successful applications on the mass market. PolylCs first product of this type, i.e. conductive and transparent films on PET base - PolyTC® - paves the way for practical, high-volume applications, with clear advantages both in terms of product design and in terms of the integration possibilities which are shown in the target product.