Quanta Computer, the largest notebook maker in the world, showed off a new touch screen technology for Windows 7 over at WinHEC Taipei 2008. Unlike other touchscreens, the new Quanta multi-touch Optical Touch Screen doesn't use a capacitive or resistive touch panel but two cameras placed on the top corners of the display. The technology is cheaper than traditional touch panels, and mass production of panels for both notebooks and monitors will start soon.
The technology does not use a capacitive or resistive touch panel, and instead places cameras on the top corners of the display. The two cameras locate the user's finger position and transfers the mouse pointer to that location.
The technology also supports multi-touch gestures such as rotate, zoom-in and zoom-out.
The advantage of the technology compared to traditional touch panels is its cost-effectiveness, since the technology only requires two cameras. However the advantage scales with panel size meaning the smaller the panel, the less the cost-effective Optical Touch is compared to traditional touch-panel technologies, according to representative from Quanta.