Pattern substrate and touch panel using the same

Abstract

A touchscreen display device includes a display module and an electrically conductive and light transmissive layer provided over the display module to allow detection of touch input. The electrically conductive and light transmissive layer includes a transparent substrate and a transparent layer provided over the transparent substrate. The transparent layer has first and second surfaces, which are opposing surfaces, and the first surface faces the transparent substrate. The second surface includes a plurality of protrusions extending in different directions such that the plurality of first protrusions intersect to form recess regions on the second surface. The recess regions include a plurality of second protrusions, and the second protrusions have a height and a width less than the first protrusions. At least one metallic wiring layer is formed on the plurality of first protrusions including at locations where the first protrusions intersect.

What is claimed is: 
     
         1 . A touchscreen display device comprising:
 a display module; and   an electrically conductive and light transmissive layer provided over the display module and allowing detection of touch input, the electrically conductive and light transmissive layer having   a transparent substrate;   a transparent layer provided over the transparent substrate, the transparent layer having first and second surfaces, which are opposing surfaces, the first surface facing the transparent substrate, the second surface having a plurality of protrusions extending in different directions such that the plurality of first protrusions intersect to form recess regions on the second surface, and the recess regions having a plurality of second protrusions, the second protrusions having a height and a width less than the first protrusions; and   at least one metallic wiring layer formed on the plurality of first protrusions including at locations where the first protrusions intersect.   
     
     
         2 . The touchscreen display device of  claim 1 , wherein the display module is a liquid crystal display module. 
     
     
         3 . The touchscreen display device of  claim 1 , wherein the transparent substrate has first and second surfaces, the first surface of the transparent substrate facing the display module, and the second surface facing the second surface of the transparent layer. 
     
     
         4 . The touchscreen display device of  claim 1 , wherein the second surface of the transparent layer face the display module. 
     
     
         5 . The touchscreen display device of  claim 1 , wherein each of the first protrusions has a width of 200-1000 nm, and each of the second protrusions has a width of 50-100 nm. 
     
     
         6 . The touchscreen display device of  claim 1 , wherein the at least one metallic wiring layer has a thickness greater than a pitch value between two adjacent second protrusions. 
     
     
         7 . The touchscreen display device of  claim 1 , wherein the transparent layer is made of resin material. 
     
     
         8 . The touchscreen display device of  claim 7 , wherein the resin material is one of a thermosetting polymer or a photo-curable polymer, the polymer being one of PET, PC and PI. 
     
     
         9 . The touchscreen display device of  claim 1 , wherein the substrate is at least one of glass or quarts. 
     
     
         10 . The touchscreen display device of  claim 1 , wherein the plurality of first protrusions form a mesh layout on the second surface of the resin layer. 
     
     
         11 . The touchscreen display device of  claim 1 , wherein the plurality of first protrusions comprises a first group of protrusions extending in a first direction and a second group of protrusions extending in a second direction, the first and second directions being different directions. 
     
     
         12 . The touchscreen display device of  claim 11 , wherein the first and second directions are perpendicular to each other such that the recess regions have a rectangular shape. 
     
     
         13 . The touchscreen display device of  claim 1 , wherein a recess is proved between adjacent second protrusions to form a pattern of protrusions and recesses. 
     
     
         14 . The touchscreen display device of  claim 1 , wherein the plurality of first protrusions comprises a first group of protrusions extending in a first direction and a second group of protrusions extending in a second direction, the first and second directions being different directions, the plurality of second protrusions extending in the first direction of the first group of protrusions. 
     
     
         15 . The touchscreen display device of  claim 1 , wherein the at least one metallic wiring layer comprises at least one of Al, Cr, Ag, Cu, Ni, Co or Mo. 
     
     
         16 . The touchscreen display device of  claim 1 , wherein an electrical conductivity of the electrically conductive and light transmissive layer is equal to indium tin oxide (ITO). 
     
     
         17 . The touchscreen display device of  claim 1 , wherein a width of a first protrusion is 200-1000 nm. 
     
     
         18 . The touchscreen display device of  claim 1 , wherein each of the plurality of first protrusions has a width wider than a width of each of the plurality of second protrusions. 
     
     
         19 . The touchscreen display device of  claim 1 , wherein each of the first and second protrusions have a rectangular shape.