Flexible touch screen panel and flexible display device with the same

Abstract

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.

What is claimed is: 
     
         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;   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 first region, which is capable of being bent by a predetermined curvature about a folding axis, and a second region as a flat region, areas of the sensing cells formed on the first region being different from areas of the sensing cells formed on the second region, or an interval between two of the sensing cells formed on the first region being different from an interval between two of the sensing cells formed on the second region.   
     
     
         2 . The flexible touch screen panel of  claim 1 , wherein, when the thin film substrate having the sensing cells formed thereon is bent in the opposite direction to the first surface thereof, the interval between the first and second sensing cells formed on the first region is smaller than the interval between the first and second sensing cells formed on the second region. 
     
     
         3 . The flexible touch screen panel of  claim 1 , wherein, when the thin film substrate having the sensing cells formed thereon is bent in the opposite direction to the first surface thereof, the areas of the first and second sensing cells formed on the first region is larger than the areas of the first and second sensing cells formed on the second region. 
     
     
         4 . The flexible touch screen panel of  claim 1 , wherein, when the thin film substrate having the sensing cells formed thereon is bent in the direction of the first surface thereof, the interval between the first and second sensing cells formed on the first region is larger than the interval between the first and second sensing cells formed on the second region. 
     
     
         5 . The flexible touch screen panel of  claim 1 , wherein, when the thin film substrate having the sensing cells formed thereon is bent in the direction of the first surface thereof, the areas of the first and second sensing cells formed on the first region is smaller than areas of the first and second sensing cells formed on the second region. 
     
     
         6 . 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. 
     
     
         7 . The flexible touch screen panel of  claim 6 , further comprising an insulation layer interposed between the first connecting lines and the second connecting lines. 
     
     
         8 . The flexible touch screen panel of  claim 1 , wherein the first and second sensing cells are formed in different layers. 
     
     
         9 . The flexible touch screen panel of  claim 8 , wherein the first sensing cells are formed on the first surface of the thin film substrate, and the second sensing cells are formed in the direction intersecting the first sensing cells on an insulation layer formed on the first surface of the thin film substrate having the first sensing cells. 
     
     
         10 . The flexible touch screen panel of  claim 8 , wherein the first sensing cells are arranged in the direction parallel with the folding axis, and areas and interval of the first sensing cells formed on the first region are different from those of the first sensing cells formed on the second region. 
     
     
         11 . The flexible touch screen panel of  claim 10 , wherein each of the first sensing cells formed on the first region is divided into a plurality of divided sensing cells, and areas and interval of the divided sensing cells are smaller than those of the first sensing cells formed on the second region. 
     
     
         12 . The flexible touch screen panel of  claim 9 , wherein the first sensing cells arranged in the first direction are made of indium tin oxide (ITO), and the second sensing cells arranged in the second direction are made of silver nano-wires. 
     
     
         13 . The flexible touch screen panel of  claim 1 , wherein the thin film substrate is made of a polyimide material. 
     
     
         14 . The flexible touch screen panel of  claim 13 , wherein the thickness of the thin film substrate is about 0.005 mm to 0.05 mm. 
     
     
         15 . A flexible display device comprising:
 a thin film substrate including 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, 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; and   a display device attached to the thin film substrate so as to face the sensing patterns and the sensing lines formed on the first surface of the thin film substrate, wherein the flexible display device has a first region, which is capable of being bent by a predetermined curvature about a folding axis, and a second region as a flat region, areas of the sensing cells formed on a first region being different from areas of the sensing cells formed on a second region, or an interval between two of the sensing cells formed on the first region being different from an interval between two of the sensing cells formed on the second region.   
     
     
         16 . The flexible display device of  claim 15 , wherein the display device includes an organic light emitting display device. 
     
     
         17 . The flexible display device of  claim 15 , further comprising: a polarizing film and a window substrate sequentially attached to a second surface of the thin film substrate through a transparent adhesive. 
     
     
         18 . The flexible display device of  claim 17 , wherein the window substrate is formed of polymethyl methacrylate (PMMA) or acryl and polyester (PET).