Integrated Device Technology (IDT) developed the world's first single-layer multi-touch capacitive controller, called PureTouch. IDT explains that in normal multi-touch displays there are two or three layers of ITO - and they managed to use just a single layer in PureTouch. Having just one layer makes for cheaper touch screens, and also more efficient and bright ones. And it works for both LCD and AMOLED displays.

PureTouch display prototypePureTouch display prototype

The only limitation of the new approach is that it only works well on small displays (up to 5" in size, and the maximum resolution is 1024x1024).

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