The main transparent conductive material used for making touch panels is indium tin oxide (ITO). However, as the dimensions of touch panels increase, ITO resistance also increases, resulting in a corresponding increase in component-level energy consumption. In addition, touch sensing circuits must also be equipped with flexible characteristics to accommodate flexible displays with touch features in the future.....
Figure 1. Relationship between resistance and curvature radius of transparent conductive material
Figure 2. Photomicrograph of a transparent conductive film produced by coffee stain inkjet printing method