Touch Sensor Mesh Designs

Abstract

In one embodiment, a touch sensor includes a substrate and a mesh of conductive material formed on the substrate and configured to extend across a display. The mesh of conductive material comprises first lines of conductive material that are substantially parallel to each other. The first lines are configured to extend across at least a portion of the display at a first angle relative to a first axis. The first lines are separated from each other along the first axis by a sequence of separation distances. Magnitudes of more than one of the separation distances are based on a phasor comprising at least one side band, wherein the at least one side band comprises at least one positive side band component and at least one negative side band component. The magnitudes comprise a pattern of translational shifts.

1 . (canceled) 
     
     
         2 . A touch sensor, comprising:
 a first substrate; and   first and second meshes configured to extend across a display, each of the first and second meshes having first lines of conductive material that are substantially parallel to each other, wherein:   the first lines of the first mesh are configured to extend across at least a portion of the display at a first angle relative to a first axis;   the first lines of the first mesh are separated from each other along the first axis by a sequence of separation distances;   magnitudes of more than one of the separation distances are based on a phasor comprising at least one side band, wherein the at least one side band comprises at least one positive component and at least one negative component; and   the magnitudes comprise a pattern of translational shifts.   
     
     
         3 . The touch sensor of  claim 2 , wherein:
 the first lines of the first mesh are adjacent to one another; and   the pattern of translational shifts is applied to adjacent first lines of the first mesh.   
     
     
         4 . The touch sensor of  claim 2 , wherein the pattern of translational shifts is applied to every other conductive line of the first lines of the first mesh. 
     
     
         5 . The touch sensor of  claim 2 , wherein:
 the phasor further comprises a phasor magnitude that is calculated based on a subpixel pitch; and   the pattern of translational shifts is:
 normalized to one; 
 multiplied by the phasor magnitude; and 
 applied to the first lines of the first mesh. 
   
     
     
         6 . The touch sensor of  claim 2 , wherein the pattern of translational shifts consists of about −1, about −0.62, about 0.62, and about 1. 
     
     
         7 . The touch sensor of  claim 2 , wherein:
 the display comprises a plurality of pixels;   each of the pixels has a first pixel pitch (PP x ) along the first axis;   the first pixel pitch is a distance between corresponding features of two adjacent pixels along the first axis; and   the magnitudes are further based on the first pixel pitch.   
     
     
         8 . The touch sensor of  claim 2 , wherein the phasor includes an even number of phasor steps and the pattern of translational shifts includes a translational shift associated with each of the phasor steps. 
     
     
         9 . The touch sensor of  claim 2 , wherein the first lines of the first mesh and the first lines of the second mesh are disposed in the same layer. 
     
     
         10 . The touch sensor of  claim 2 , wherein the first lines of the first mesh and the first lines of the second mesh are disposed in different layers. 
     
     
         11 . The touch sensor of  claim 2 , wherein the first and second meshes are disposed on a first side of the first substrate. 
     
     
         12 . The touch sensor of  claim 2 , wherein the first and second meshes are disposed on opposite sides of the first substrate. 
     
     
         13 . The touch sensor of  claim 2 , further comprising a second substrate, wherein the first mesh is disposed on a first side of the first substrate and the second mesh is disposed on a first side of the second substrate. 
     
     
         14 . A system, comprising:
 a display device comprising a plurality of pixels, each pixel including a plurality of sub-pixels; and   a touch sensor comprising:
 a first substrate; and 
 first and second meshes of conductive material configured to extend across the display device, each of the first and second meshes having first lines of conductive material that are substantially parallel to each other, wherein: 
 the first lines of the first mesh are configured to extend across at least a portion of the display at a first angle relative to a first axis; 
 the first lines of the first mesh are separated from each other along the first axis by a sequence of separation distances; 
 magnitudes of more than one of the separation distances are based on a phasor comprising at least one side band, wherein the at least one side band comprises at least one positive component and at least one negative component; and 
 the magnitudes comprise a pattern of translational shifts. 
   
     
     
         15 . The system of  claim 14 , wherein:
 the first lines of the first mesh are adjacent to one another; and   the pattern of translational shifts is applied to adjacent first lines of the first mesh.   
     
     
         16 . The system of  claim 14 , wherein the pattern of translational shifts is applied to every other conductive line of the first lines of the first mesh. 
     
     
         17 . The system of  claim 14 , wherein:
 the phasor further comprises a phasor magnitude that is calculated based on a subpixel pitch; and   the pattern of translational shifts is:   normalized to one;   multiplied by the phasor magnitude; and   applied to the first lines of the first mesh.   
     
     
         18 . The system of  claim 14 , wherein the pattern of translational shifts consists of about −1, about −0.62, about 0.62, and about 1. 
     
     
         19 . The system of  claim 14 , wherein:
 each pixel of the plurality of pixels has a first pixel pitch (PP x ) along the first axis;   the first pixel pitch is a distance between corresponding features of two adjacent pixels along the first axis; and   the magnitudes are further based on the first pixel pitch.   
     
     
         20 . The system of  claim 14 , wherein the phasor includes an even number of phasor steps and the pattern of translational shifts includes a translational shift associated with each of the phasor steps. 
     
     
         21 . The system of  claim 14 , wherein the first lines of the first mesh and the first lines of the second mesh are disposed in the same layer. 
     
     
         22 . The system of  claim 14 , wherein the first lines of the first mesh and the first lines of the second mesh are disposed in different layers. 
     
     
         23 . The touch sensor of  claim 14 , wherein the first and second meshes are disposed on a first side of the first substrate. 
     
     
         24 . The touch sensor of  claim 14 , wherein the first and second meshes are disposed on opposite sides of the first substrate. 
     
     
         25 . The touch sensor of  claim 14 , further comprising a second substrate, wherein the first mesh is disposed on a first side of the first substrate and the second mesh is disposed on a first side of the second substrate. 
     
     
         26 . A method, comprising:
 forming a touch sensor that comprises a first substrate and first and second meshes of conductive material configured to extend across a display, each of the first and second meshes having first lines of conductive material that are substantially parallel to each other, wherein:   the first lines of the first mesh are configured to extend across at least a portion of the display at a first angle relative to a first axis;   the first lines of the first mesh are separated from each other along the first axis by a sequence of separation distances;   magnitudes of more than one of the separation distances are based on a phasor comprising at least one side band, wherein the at least one side band comprises at least one positive component and at least one negative component; and   the magnitudes comprise a pattern of translational shifts.   
     
     
         27 . The method of  claim 26 , wherein:
 the first lines of the first mesh are adjacent to one another; and   the pattern of translational shifts is applied to adjacent first lines of the first mesh.   
     
     
         28 . The method of  claim 26 , wherein the pattern of translational shifts is applied to every other conductive line of the first lines of the first mesh. 
     
     
         29 . The method of  claim 26 , wherein:
 the phasor further comprises a phasor magnitude that is calculated based on a subpixel pitch; and   the pattern of translational shifts is:   normalized to one;   multiplied by the phasor magnitude; and   applied to the first lines of the first mesh.   
     
     
         30 . The method of  claim 26 , wherein the pattern of translational shifts consists of about −1, about −0.62, about 0.62, and about 1. 
     
     
         31 . The method of  claim 26 , wherein:
 the display comprises a plurality of pixels;   each of the pixels has a first pixel pitch (PP x ) along the first axis;   the first pixel pitch is a distance between corresponding features of two adjacent pixels along the first axis; and   the magnitudes are further based on the first pixel pitch.   
     
     
         32 . The method of  claim 26 , wherein the first lines of the first mesh and the first lines of the second mesh are disposed in the same layer. 
     
     
         33 . The method of  claim 26 , wherein the first lines of the first mesh and the first lines of the second mesh are disposed in different layers. 
     
     
         34 . The touch sensor of  claim 26 , wherein the first and second meshes are disposed on a first side of the first substrate. 
     
     
         35 . The touch sensor of  claim 26 , wherein the first and second meshes are disposed on opposite sides of the first substrate. 
     
     
         36 . The touch sensor of  claim 26 , further comprising a second substrate, wherein the first mesh is disposed on a first side of the first substrate and the second mesh is disposed on a first side of the second substrate.