A touch pad is often used as a simple input-device to control an external display, like a mouse for example.
The external display needs plenty energy, never mind of just showing some measuring values. To solve this problem or to have a new feature it probably would be nice to have a small simple display behind the touch pad. With that display you can show some measurements or important information very energy-saving. The DOG-Series would be suitable for such a field. It is very flat and flexible usable, with low-power consumption. The slim design allows simple including of the display in existing hardware.