Capacitive touch sensor and fabrication method thereof and capacitive touch panel

Abstract

A capacitive touch sensor includes multiple first-axis traces, multiple second-axis traces, an insulation layer and multiple metal traces. Each first-axis trace includes multiple first touch-sensing pads and first connecting lines connected therebetween. Each second-axis trace includes multiple second touch-sensing pads and second connecting lines connected therebetween. At least one of the first connecting line and the second connecting line is a metal printing line.

What is claimed is: 
     
         1 . A capacitive touch sensor, comprising:
 a plurality of first-axis traces, wherein each of the first-axis traces comprises a plurality of first touch-sensing pads and first connecting lines, the first touch-sensing pads are arranged along a first direction, and each of the first connecting lines connects two adjacent first touch-sensing pads;   a plurality of second-axis traces intersected with the first-axis traces, wherein each of the second-axis traces comprises a plurality of second touch-sensing pads and second connecting lines, the second touch-sensing pads are arranged along a second direction different to the first direction, each of the second connecting lines connects two adjacent second touch-sensing pads, and at least one of the first connecting lines and the second connecting lines is a multi-layer stack structure;   an insulation layer at least formed between the first connecting lines and the second connecting lines; and   a plurality of metal traces disposed on the periphery of the capacitive touch sensor and electrically connected to the first-axis traces and the second-axis traces.   
     
     
         2 . The capacitive touch sensor as claimed in  claim 1 , wherein each one of two adjacent first touch-sensing pads has a first extrusion extending towards the other, and each one of two adjacent second touch-sensing pads has a second extrusion extending towards the other. 
     
     
         3 . The capacitive touch sensor as claimed in  claim 1 , wherein the material of at least one of the first connecting lines and the second connecting lines is metal. 
     
     
         4 . The capacitive touch sensor as claimed in  claim 1 , wherein the area of each layer in the multi-layer stack structure is decreased from the bottom to the top of the multi-layer stack structure. 
     
     
         5 . A capacitive touch sensor, comprising:
 a plurality of first-axis traces, wherein each of the first-axis traces comprises a plurality of first touch-sensing pads and first connecting lines, the first touch-sensing pads are arranged along a first direction, and each of the first connecting lines connects two adjacent first touch-sensing pads;   a plurality of second-axis traces intersected with the first-axis traces, wherein each of the second-axis traces comprises a plurality of second touch-sensing pads and second connecting lines, the second touch-sensing pads are arranged along a second direction different to the first direction, and each of the second connecting lines connects two adjacent second touch-sensing pads;   an insulation layer at least formed between the first connecting lines and the second connecting lines; and   a plurality of metal traces disposed on the periphery of the capacitive touch sensor and electrically connected to the first-axis traces and the second-axis traces, wherein each of the metal traces is a multi-layer stack structure.   
     
     
         6 . The capacitive touch sensor as claimed in  claim 5 , wherein an area of each layer in the multi-layer stack structure is decreased from the bottom to the top of the multi-layer stack structure. 
     
     
         7 . A capacitive touch panel, comprising:
 a cover lens; and   a touch sensor formed on the cover lens and comprising:
 a plurality of first-axis traces, wherein each of the first-axis traces comprises a plurality of first touch-sensing pads and first connecting lines, the first touch-sensing pads are arranged along a first direction, and each of the first connecting lines connects two adjacent first touch-sensing pads; 
 a plurality of second-axis traces intersected with the first-axis traces, wherein each of the second-axis traces comprises a plurality of second touch-sensing pads and second connecting lines, the second touch-sensing pads are arranged along a second direction different to the first direction, and at least one of the first connecting lines and the second connecting lines is a multi-layer stack structure; 
 an insulation layer at least formed between the first connecting lines and the second connecting lines; and 
 a plurality of metal traces disposed on the periphery of the capacitive touch sensor and electrically connected to the first-axis traces and the second-axis traces. 
   
     
     
         8 . The capacitive touch panel as claimed in  claim 7 , wherein the cover lens comprises a substrate and a decorative layer is formed on the substrate. 
     
     
         9 . The capacitive touch panel as claimed in  claim 8 , wherein the substrate is a glass substrate or a plastic substrate. 
     
     
         10 . The capacitive touch panel as claimed in  claim 7 , wherein the decorative layer is formed at a position overlapping the metal traces. 
     
     
         11 . The capacitive touch panel as claimed in  claim 7 , wherein the material of the decorative layer comprises at least one of diamond-like carbon, ceramic, ink, and photo resist. 
     
     
         12 . The capacitive touch panel as claimed in  claim 7 , wherein each one of two adjacent first touch-sensing pads has a first extrusion extending towards the other, and each one of two adjacent second touch-sensing pads has a second extrusion extending towards the other. 
     
     
         13 . The capacitive touch panel as claimed in  claim 7 , wherein the material of at least one of the first connecting lines and the second connecting lines is metal. 
     
     
         14 . The capacitive touch panel as claimed in  claim 7 , wherein the multi-layer stack structure is decreased from the bottom to the top of the multi-layer stack structure. 
     
     
         15 . The capacitive touch panel as claimed in  claim 7 , wherein each of the metal traces is a multi-layer stack structure, and an area of each layer in the multi-layer stack structure is decreased from the bottom to the top of the multi-layer stack structure.