Anybody who thinks that touch screens have only existed since the first iPhone conquered the market in 2007 is wrong. In fact, this technology was launched as early as the 1980s and has since become a successful part of our everyday lives. Whether for smartphones, ticket machines at a bus stop or the control panel for a coffee machine, all these things want us to touch them gently so that they can provide us with their services.
However, one touch screen is not automatically the same as any other. This technology can be divided into resistive and capacitive touch screens. The difference here is that one screen responds to pressure and the other one to a change in the electric field.
The relevant process is simply activated by touching the operating screen. It has a conductive layer on it. Constant voltage is generated here using alternating current. If it is then touched by a mere finger or a stylus pen, the electric field is interrupted and some kind of interaction is triggered.
This technology requires pressure from outside to trigger the command that is needed. If you press a certain point on the operating surface, two conductive layers within the screen are connected to each other. The electrical resistance is detected to obtain the relevant position and the desired interaction is triggered.
Two layers insulated from each other with a conductive grid pattern are required to trigger a switching operation. There is a driver on one layer and a sensor on the other one. If the surface is touched, the voltage in the capacitor changes and triggers a signal.
A touch screen may cost more than a traditional screen, but it is still less than a sliding or fold-out keyboard. This makes it possible to minimize hardware costs.
Low-contact operating technologies are dustproof and waterproof thanks to the sealed surface. This means they can be cleaned quickly and simply and it is hard for dirt particles to cling to the smooth surface.
We also make use of these benefits and have constantly developed applications in the field of capacitive operating technology. Our portfolio ranges from individual capacitive switches to complete operating panels based on touch. In addition to ready-to-use catalog products like keyboards, we also offer customized individual solutions.
Complying with strict hygiene measures saves lives, particularly in hygiene-sensitive areas. To prevent invisible sources of danger, special technologies are required when manufacturing machines, including data input devices. Capacitive operating elements are a viable option here. By having an even transition from the touch surface to the technology platform, it is possible to thoroughly clean the unit. IP69K class protection can be achieved in certain circumstances.
Using alternatives like acrylic or artificial stone
Operating feedback as an acoustic signal or local vibration