An LED-based multitouch sensor for LCD screens
Florian Echtler, Thomas Pototschnig, Gudrun Johanna Klinker · 2010
In recent years, a large number of multitouch sensor concepts have been presented. Particularly optical sensors are highly popular due to their versatility. However, especially camera-based systems often require a significant amount of space behind the screen and are not well suited to flatscreen-based setups. While integrated sensors for flatscreens have already been presented, they are mostly complex, expensive or both.