Abstract
AbstractA new hybrid‐type touch screen panel (TSP) has been developed based on a‐Si:H TFT which can detect the change of both CLC and photo‐current. This TSP can detect the difference of CLC between touch and no‐touch states in unfavorable conditions such as dark ambient light and shadows. The hybrid TSP sensor consists of a detection area which includes one TFT for photo sensing and two TFTs for amplification. Compared to a single internal capacitive TSP or an optical sensing TSP, this new proposed hybrid‐type TSP enables larger sensing margin due to embedding of both optical and capacitive sensors.
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