Flexible touch screen panel and flexible display device with the same
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.
1. A flexible touch screen panel comprising:
a thin film substrate including an active area and a non active area positioned at the outside of the active area, the thin film substrate having at least two second regions and a first region that is disposed between the two second regions adjacent to each other;
sensing patterns formed on the active area of a first surface of the thin film substrate, and 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, and connected to the sensing patterns,
wherein the flexible touch screen panel has a folding axis about which the flexible touch screen panel is bent and the folding axis is disposed in the first region,
wherein when the flexible touch screen panel is bent about the folding axis, the first region forms a curvature and the second regions maintains a flat without a curvature,
wherein an interval between the first and second sensing cells adjacent to each other in the first region is different from an interval between the first and second sensing cells adjacent to each other in the second regions, and the interval between the first and second sensing cells adjacent to each other is defined as an interval along a direction parallel to the first surface of the thin film substrate
wherein the interval between the first and second sensing cells adjacent to each other in the first region is smaller than the interval between the first and second sensing cells adjacent to each other in the second region, and
wherein the interval between the first and second sensing cells adjacent to each other in the first region is larger when the flexible touch screen panel is in a bent state than when the flexible touch screen panel is in a non-bent state, and
wherein areas of the first and second sensing cells formed on the first region are different from areas of the first and second sensing cells formed on the second regions.
2. The flexible touch screen panel of claim 1 , wherein, the flexible touch screen panel is capable of being bent toward outside of the first and second sensing cells, and areas of the first and second sensing cells formed on the first region are larger than areas of the first and second sensing cells formed on the second regions.
3. The flexible touch screen panel of claim 1 , wherein the sensing patterns further include first connecting lines connecting adjacent first sensing cells, and second connecting lines connecting adjacent second sensing cells.
4. The flexible touch screen panel of claim 3 , further comprising an insulation layer interposed between the first connecting lines and the second connecting lines.
5. The flexible touch screen panel of claim 1 , wherein the thin film substrate is made of a polyimide material.
6. The flexible touch screen panel of claim 5 , wherein the thickness of the thin film substrate is about 0.005 mm to 0.05 mm.
7. The flexible touch screen panel of claim 1 , wherein the first region is a region of the thin film substrate formed from one edge of the thin film substrate to another edge of the thin film substrate.