Touch panel and method for manufacturing touch panel

Abstract

A touch panel capable of performing display and sensing along a curved surface or a touch panel that maintains high detection sensitivity even when it is curved along a curved surface is provided. A flexible display panel is placed along a curved portion included in a surface of a support. A first film layer is attached along a surface of the display panel by a bonding layer. Second to n-th film layers (n is an integer of 2 or more) are sequentially attached along a surface of the first film layer by bonding layers. A flexible touch sensor is attached along a surface of the n-th film layer by a bonding layer.

1 . An electronic device comprising a curved display portion, the electronic device comprising:
 a substrate comprising a curved portion;   a transistor over the substrate;   an organic EL element electrically connected to the transistor;   a film layer comprising an organic material over the organic EL element;   a bonding layer over the film layer;   a touch sensor over the bonding layer; and   an exterior component over the touch sensor,   wherein at least part of the exterior component is configured to serve as a housing of the electronic device,   wherein an end portion of the film layer comprises a region provided outside of an end portion of the touch sensor, and   wherein the curved portion of the substrate is not supported by a support.   
     
     
         2 . The electronic device according to  claim 1 ,
 wherein the film layer comprises a plurality of inorganic insulating layers.   
     
     
         3 . The electronic device according to  claim 1 ,
 wherein the film layer comprises an inorganic insulating layer and an organic insulating layer.   
     
     
         4 . The electronic device according to  claim 1 ,
 wherein the electronic device is a mobile phone.   
     
     
         5 . The electronic device according to  claim 1 ,
 wherein the electronic device is a wrist-watch-type portable information appliance.   
     
     
         6 . An electronic device comprising a curved display portion, the electronic device comprising:
 a substrate;   a transistor over the substrate;   an organic EL element electrically connected to the transistor;   a film layer comprising an organic material over the organic EL element;   a bonding layer over the film layer;   a touch sensor over the bonding layer; and   an exterior component over the touch sensor,   wherein at least part of the exterior component is configured to serve as a housing of the electronic device,   wherein an end portion of the film layer comprises a region provided outside of an end portion of the touch sensor,   wherein the film layer comprises a curved portion, and   wherein the curved portion of the film layer is not supported by a support.   
     
     
         7 . The electronic device according to  claim 6 ,
 wherein the film layer comprises a plurality of inorganic insulating layers.   
     
     
         8 . The electronic device according to  claim 6 ,
 wherein the film layer comprises an inorganic insulating layer and an organic insulating layer.   
     
     
         9 . The electronic device according to  claim 6 ,
 wherein the electronic device is a mobile phone.   
     
     
         10 . The electronic device according to  claim 6 ,
 wherein the electronic device is a wrist-watch-type portable information appliance.   
     
     
         11 . An electronic device comprising a curved display portion, the electronic device comprising:
 a substrate;   a transistor over the substrate;   an organic EL element electrically connected to the transistor;   a film layer comprising an organic material over the organic EL element;   a bonding layer over the film layer;   a touch sensor over the bonding layer; and   an exterior component over the touch sensor,   wherein at least part of the exterior component is configured to serve as a housing of the electronic device,   wherein an end portion of the film layer comprises a region provided outside of an end portion of the touch sensor,   wherein the film layer comprises a curved portion, and   wherein the substrate is not supported by a support in a region overlapping with the curved portion of the film layer.   
     
     
         12 . The electronic device according to  claim 11 ,
 wherein the film layer comprises a plurality of inorganic insulating layers.   
     
     
         13 . The electronic device according to  claim 11 ,
 wherein the film layer comprises an inorganic insulating layer and an organic insulating layer.   
     
     
         14 . The electronic device according to  claim 11 ,
 wherein the electronic device is a mobile phone.   
     
     
         15 . The electronic device according to  claim 11 ,
 wherein the electronic device is a wrist-watch-type portable information appliance.