A flexible touch screen panel includes a thin film substrate divided into an active area and a non active area positioned at the outside of the active area; sensing patterns formed on the active area of a first surface of the thin film substrate, including first sensing cells formed to be connected along a first direction and second sensing cells formed to be connected along a second direction; and sensing lines formed on the non active area of the first surface of the thin film substrate. The sensing lines are connected to the sensing patterns. In the touch screen panel, the area and/or interval of the sensing cells formed on a first region, which is capable of being bent by predetermined curvature about a folding axis is different from the area and/or interval of the sensing cells formed on a second region as a flat region except the first region.