Flexible touch screen panel

Abstract

In a flexible touch screen panel, sensing patterns as a touch sensor are formed on the first surface of a flexible thin film substrate and a coated polarizer layer is formed on the second surface of the thin film substrate to secure the flexible characteristic, to reduce the thickness of the touch screen panel, and to improve the visibility of an image. Particularly, the flexible touch screen panel includes a flexible substrate comprising an active region and a non-active region positioned outside the active region, sensing patterns formed over the active region of a first surface of the substrate, conductive lines formed over the non-active region of the first surface of the substrate and connected to the sensing patterns, and a coated polarizer layer formed over a second surface of the substrate.

What is claimed is: 
     
         1 . A flexible touch screen panel, comprising:
 a flexible substrate comprising an active region and a non-active region positioned outside the active region;   sensing patterns formed over the active region of a first surface of the substrate;   conductive lines formed over the non-active region of the first surface of the substrate and connected to the sensing patterns; and   a coated polarizer layer formed over a second surface of the substrate.   
     
     
         2 . The flexible touch screen panel as claimed in  claim 1 , wherein the coated polarizer layer is a thin crystal film polarizer. 
     
     
         3 . The flexible touch screen panel as claimed in  claim 1 , wherein the substrate comprises a phase shift film. 
     
     
         4 . The flexible touch screen panel as claimed in  claim 3 , wherein the substrate is configured to function as a quarter wave plate (QWP) and comprises a polycarbonate (PC) film, an oriented polypropylene (OPP) film, or a polyvinyl alcohol (PVA) film. 
     
     
         5 . The flexible touch screen panel as claimed in  claim 3 , wherein the substrate comprises a plurality of phase shift films to form a lamination structure. 
     
     
         6 . The flexible touch screen panel as claimed in  claim 5 , wherein retardation values of at least two of the plurality of phase shift films differ from each other. 
     
     
         7 . The flexible touch screen panel as claimed in  claim 1 , wherein the substrate comprises a cast polycarbonate (PC) film or a cyclic polyolefin (COP) film. 
     
     
         8 . The flexible touch screen panel as claimed in  claim 1 , wherein the sensing patterns comprise:
 first sensing cells arranged in a first direction;   first coupling lines, each of which electrically connects neighboring two cells among the plurality of first sensing cells;   second sensing cells arranged in a second direction; and   second coupling lines, each of which electrically connects neighboring two cells among the plurality of second sensing cells.   
     
     
         9 . The flexible touch screen panel as claimed in  claim 8 , wherein an insulating layer is interposed between and at an intersection of one of the first coupling lines and one of the second coupling lines. 
     
     
         10 . The flexible touch screen panel as claimed in  claim 1 , wherein a black matrix is further formed in the non-active region of the first surface of the substrate.