Electrode structure and touch detecting sensor using the same

Abstract

An electrode structure includes: a first nonconductive layer; a first conductive layer disposed on the first nonconductive layer; a second nonconductive layer disposed on the first conductive layer; a second conductive layer disposed on the second nonconductive layer; and a third nonconductive layer disposed on the second conductive layer, where at least one of the first conductive layer and the second conductive layer includes a two-dimensional conductive material.

What is claimed is: 
     
         1 . An electrode structure, comprising:
 a first nonconductive layer;   a first conductive layer disposed on the first nonconductive layer;   a second nonconductive layer disposed on the first conductive layer;   a second conductive layer disposed on the second nonconductive layer; and   a third nonconductive layer disposed on the second conductive layer,   wherein at least one of the first conductive layer and the second conductive layer comprises a two-dimensional conductive material.   
     
     
         2 . The electrode structure of  claim 1 , wherein
 each of the first conductive layer and the second conductive layer comprises a conductive material comprising the two-dimensional conductive material, a silver nanowire, graphene, a carbon nanotube, a metal mesh or a combination thereof.   
     
     
         3 . The electrode structure of  claim 2 , wherein
 the conductive material of the first conductive layer and the conductive material of the second conductive layer are different from each other.   
     
     
         4 . The electrode structure of  claim 3 , wherein
 a part of the conductive material of the first conductive layer or the second conductive layer is disposed in the second nonconductive layer.   
     
     
         5 . The electrode structure of  claim 4 , wherein
 the first nonconductive layer, the second nonconductive layer and the third nonconductive layer comprise a binder,   wherein the binder is wet-coated with the conductive material of the first conductive layer or the second conductive layer.   
     
     
         6 . The electrode structure of  claim 5 , wherein
 the two-dimensional conductive material comprises an alkaline metal suboxide, an alkaline metal subcarbide, an alkaline-earth metal subnitride, a transition element subcarbide, a transition metal suboxide, a transition element-rich chalcogenide, a transition metal-containing subhalide, a boride compound, an oxide or a combination thereof.   
     
     
         7 . The electrode structure of  claim 5 , further comprising:
 an anti-reflection coating disposed between the first conductive layer and the second conductive layer,   wherein the anti-reflection coating has a refractive index in a range of about 1.6 to about 1.8 and a thickness in a range of about 75 nanometers to about 95 nanometers.   
     
     
         8 . The electrode structure of  claim 5 , wherein the third nonconductive layer comprises:
 a lower layer comprising the binder; and   an overcoat layer comprising a polyacrylate-based material.   
     
     
         9 . The electrode structure of  claim 1 , further comprising:
 a third conductive layer disposed on the third nonconductive layer and   a fourth nonconductive layer disposed on the third conductive layer.   
     
     
         10 . The electrode structure of  claim 9 , wherein
 the third conductive layer comprises a two-dimensional conductive material, a silver nanowire, a metal mesh, a carbon nanotube, graphene or a combination thereof, and   the fourth nonconductive layer comprises a binder which is wet-coated with the conductive material of the third conductive layer.   
     
     
         11 . The electrode structure of  claim 10 , wherein the fourth nonconductive layer comprises:
 a lower layer comprising the binder; and   an overcoat layer comprising a polyacrylate-based material.   
     
     
         12 . The electrode structure of  claim 1 , further comprising:
 a conductive connector disposed on a side surface of a stacking structure comprising the first nonconductive layer, the first conductive layer, the second nonconductive layer, the second conductive layer and the third nonconductive layer,   wherein the conductive connector is electrically connected to the first conductive layer and the second conductive layer.   
     
     
         13 . The electrode structure of  claim 12 , wherein
 the conductive connector comprises the conductive material of the first conductive layer or the second conductive layer, molybdenum (Mo), silver (Ag), titanium (Ti), copper (Cu), aluminum (Ti), molybdenum/aluminum/molybdenum (Mo/Al/Mo) or a combination thereof.   
     
     
         14 . A touch detecting sensor comprising:
 a plurality of first touch electrodes arranged in a first direction;   a plurality of second touch electrodes arranged in a second direction crossing the first direction; and   a touch controller connected to the plurality of first touch electrodes and the plurality of second touch electrodes, wherein the touch controller applies a detection input signal, and receives a detection output signal to sense a touch on the first and second touch electrodes,   wherein   each of the first touch electrodes and the second touch electrodes comprises a stacking structure in which a plurality of conductive layers and a plurality of nonconductive layers are alternately stacked one on another, and the conductive layers comprise a two-dimensional conductive material.   
     
     
         15 . The touch detecting sensor of  claim 14 , wherein
 the conductive layers comprise a conductive material comprising the two-dimensional conductive material, a silver nanowire, graphene, a carbon nanotube, a metal mesh or a combination thereof.   
     
     
         16 . The touch detecting sensor of  claim 15 , wherein
 the two-dimensional conductive material comprises an alkaline metal suboxide, an alkaline metal subcarbide, an alkaline-earth metal subnitride, a transition element subcarbide, a transition metal suboxide, a transition element-rich chalcogenide, a transition metal-containing subhalide, a boride compound, an oxide or a combination thereof.   
     
     
         17 . The touch detecting sensor of  claim 16 , wherein
 the nonconductive layers comprise a binder which is wet-coated with the conductive material of the conductive layers.   
     
     
         18 . The touch detecting sensor of  claim 17 , further comprising:
 a conductive connector disposed on a surface of the stacking structure,   wherein the conductive connector is electrically connected to the conductive layers.   
     
     
         19 . The touch detecting sensor of  claim 18 , wherein
 the conductive connector covers a part of an upper surface of the stacking structure and a side surface of the stacking structure.   
     
     
         20 . The touch detecting sensor of  claim 18 , wherein
 the conductive connector is connected to a wire which connects the plurality of first touch electrodes and the plurality of second touch electrodes to the touch controller.