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More Flexible, Thinner, More Transparent: Sensor Foils from PolyIC

Our high-performance touch sensors are based on revolutionary technology: PolyTC®. Typical for our PolyTC® sensor foils is a conductive coating with metal mesh in high optical resolution, which is applied to a transparent polyester substrate (PET). The lattice-like silver structures provide maximum electrical conductivity and at the same time high mechanical flexibility. Even designs with certain 3D shapes can be achieved with our sensor technology.

PolyTC® – The Key to Design Freedom

Our revolutionary PolyTC® technology provides you with enhanced functionality, design freedom, and customization. This makes it easy to implement trends such as capacitive sensor buttons, touch screens, single-touch or multi-touch applications, curved surfaces, or backlighting.


To help you understand the full potential of our PolyTC® sensors, we regularly develop inspiring application examples in collaboration with our parent company, LEONHARD KURZ. For us, this collaboration is an important part of our innovation strategy. With pioneering designs and smart sensor concepts for the automotive industry, household appliances industry, and consumer electronics, you can experience the full spectrum of technical possibilities with PolyIC.

PolyTC® Advantages at a Glance:

  • High signal quality and sampling frequency 
  • Flexible and transparent sensor film
  • High optical transparency
  • True color effect
  • Stable heat resistance according to customer specifications
  • Customized function and label
  • Various integration options possible
  • Maximum freedom of design

Technical Information on Our Sensor Foils

PolyTC® sensor foils consist of conductive metal structures (metal mesh) with high optical resolution on a transparent PET substrate. They offer an ideal signal-to-noise ratio, high flexibility, and meet the highest optical requirements. Our sensor foils are custom-made in high volumes. In order to keep production costs as low as possible, we manufacture using the inexpensive roll-to-roll process. Consequently, PolyTC® is an ideal replacement for flexible printed circuit boards in touch key applications or for Indium Tin Oxide (ITO) coatings in touch screens.

Technical Parameters


High signal quality and sampling frequency

Multi-touch, touch and gesture, individual keys, sliders, jog dials, proximity switches, 3D gestures

Customer-specific durability requirements, e.g., moisture, temperature fluctuations during storage


> 85 % (depending on layout)

Transparent PET substrate with metal mesh (structural size: min. 6 μm)

Surface Resistance

15 – 30 Ω/sq


Transparent polyester (PET) substrate (standard thickness: 50 or 75 μm)

Metal mesh with conductive silver (Ag)

Contact reinforcement with carbon black


Suitable sensor layout, e.g. moiré-free, no color change

Custom designs, e.g. backgammon, diamond pattern, individual keys

Sensor size: From single button up to ~12“ (depending on image format)

Modifiable total thickness (above average ~100 μm without adhesive layer)

Contact Options

Integrated tail for ZIF connectors, direct contact for ACF bonding, others possible

Input Lead

Directly integrated for Chip on Board (CoB) or without tail for Chip on Flex (CoF)

Get all technical specifications here.

Service Package and Scope of Delivery

No matter which application, format, and integration option, we adapt each PolyTC® sensor to your individual requirements. Contact us and we’ll work with you to find the right sensor solution for your specific product.

To enable you to start production without delay, we supply our PolyTC® sensor foils as single, ready-to-use sensor labels, including input leads and adhesive layer. This means they can be directly and easily further processed right away. If required, an additional protective film ensures that the goods arrive undamaged. This serves as scratch protection and ensures freedom from particles. If you have any further requests regarding the packaging or delivery options, simply let us know. We will gladly adapt our delivery to your requirements – because your satisfaction is our top priority.


We consider consulting one of the foundations of a harmonious relationship with our customers. Our PolyTC® sensor solutions experts look forward to introducing you to the full range of functions of our patented sensor technology in a personal consultation. Contact us today!

Contact us!