Touch panel and method of manufacturing touch panel

Abstract

A manufacturing method of a touch panel includes: forming a graphene electrode on a metal substrate; adhering a transfer film on the graphene electrode; patterning the metal substrate to form electrode wiring; adhering a base substrate under the electrode wiring; and removing the transfer film. In the manufacturing method, the metal layer used when forming the graphene electrode is not removed after forming the graphene, and the metal layer is patterned to be used as the electrode wiring, such that the removal process of the metal layer and the forming process of the electrode wiring are unified into one. Accordingly, in the manufacturing process of the touch panel using the graphene as the transparent electrode, the manufacturing process is simplified.

What is claimed is: 
     
         1 . A method of manufacturing a touch panel, comprising:
 forming a graphene electrode on a metal substrate;   adhering a base substrate on the graphene electrode; and   patterning the metal substrate into electrode wiring.   
     
     
         2 . The method of  claim 1 , wherein the metal substrate comprises a single layer of copper (Cu), aluminum (Al), gold (Au), silver (Ag), titanium (Ti), palladium (Pd), chromium (Cr), or combinations thereof, a double layer of molybdenum (Mo)/silver (Ag), or a triple layer of silver (Ag)/palladium (Pd)/copper (Cu). 
     
     
         3 . The method of  claim 1 , wherein forming the graphene electrode comprises patterning a graphene layer. 
     
     
         4 . The method of  claim 1 , wherein disposing the base substrate on the graphene electrode comprises coating a photo-hardening resin on a surface where the electrode wiring and the base substrate contact each other, and radiating a light thereto. 
     
     
         5 . The method of  claim 4 , wherein the photo-hardening resin comprises at least one of a polyester-based resin, an epoxy-based resin, a urethane-based resin, a polyether-based resin, a polyacryl-based resin, an acryl-based resin, and a siloxane-based resin. 
     
     
         6 . The method of  claim 1 , wherein the electrode wiring comprises an end electrically connected to the graphene electrode, a wiring section extending parallel to an edge of the touch panel, and a second end overlapping an edge of the touch panel where a controller is disposed. 
     
     
         7 . A touch panel, comprising:
 a base substrate;   an adhesive layer disposed on the base substrate;   electrode wiring disposed on the adhesive layer; and   a graphene electrode disposed on the electrode wiring,   wherein the electrode wiring comprises metal, a first end electrically connected to the graphene electrode, a wiring section extending parallel to an edge of the base substrate, and a second end overlapping an edge of the base substrate.   
     
     
         8 . A touch panel, comprising:
 a base substrate;   an adhesive layer disposed on the base substrate;   a graphene electrode disposed on the adhesive layer; and   metal electrode wiring disposed on the graphene electrode,   wherein the electrode wiring comprises metal, a first end electrically connected to the graphene electrode, a wiring section extending parallel to an edge of the base substrate, and a second end overlapping an edge of the base substrate.   
     
     
         9 . A display device, comprising:
 a display panel comprising an upper substrate and a lower substrate;   an adhesive layer disposed on the display panel;   electrode wiring disposed on the adhesive layer; and   a graphene electrode disposed on the electrode wiring,   wherein the electrode wiring comprises metal, a first end electrically connected to the graphene electrode, a wiring section extending parallel to an edge of the base substrate, and a second end overlapping an edge of the base substrate.   
     
     
         10 . A display device, comprising:
 a display panel comprising an upper substrate and a lower substrate;   an adhesive layer disposed on the upper substrate;   electrode wiring disposed on the adhesive layer; and   a graphene electrode disposed on the electrode wiring,   wherein the electrode wiring comprises metal, a first end electrically connected to the graphene electrode, a wiring section extending parallel to an edge of the base substrate, and a second end overlapping an edge of the base substrate.