Smart phone displays are frequently too small to provide a good overview of information, or fingers are too clumsy for precise input. It is not surprising that attempts are being made to make every square centimeter of the surface usable, including the cover.
Input by bending
In particular, the use of electronic paper, which one knows from e-readers, is to serve as the basis for turning the cover into an additional display. The technology is energy-efficient, pleasant for the human eye and can be expanded into a touch screen.
The concept of a flexible cover which was presented adds another facet to these additional functionalities. In addition to the usual wiping and pressing, the user can communicate with the device via the intentional bending of the additional display. It is a bit like turning the pages of a book, and would thus seem to be a good way to switch from one page to the next.
Scientists at the Joanneum Research Institute for Surface Technologies and Photonics in Weiz developed the sensor technology in cooperation with colleagues from the University of Applied Sciences Upper Austria in Hagenberg. It has been patented under the name "PyzoFlex" and has already won numerous awards.