Panel
An electrode pattern for a position sensing panel may have an array of mesh cells formed by sinusoidaly shaped conductive lines extending between vertices of the mesh cells.
1. A panel of a touch sensitive screen, comprising:
a transparent insulating substrate having a first and a second face; and
a first conductive pattern arranged as a layer on the first face, the first conductive pattern comprising a plurality of first cells each formed from a plurality of first vertices in the layer on the first face, a conductive first line connecting each first vertex to at least one adjacent first vertex, the first vertices having a substantially randomized distribution such that each conductive first line has a substantially random orientation relative to pixels of a display located below the transparent insulating substrate;
a second conductive pattern arranged as a layer on the second face, the second conductive pattern comprising conductive second lines connected to second vertices to form a mesh of second cells in the layer on the second face, each of the conductive second lines being arranged to connect at least two of the second vertices such that each second vertex is connected to at least one other second vertex via a conductive second line.
2. The panel of claim 1 , wherein the at least one of the first and second conductive lines are comprised of copper.
3. The panel of claim 1 , wherein an angle formed by at least one of the first and second conductive lines that overlap each other at each vertex is substantially 90°.
4. The panel of claim 1 , wherein at least one of the first and second conductive lines varies in width along its length from one vertex to another vertex.
5. The panel of claim 1 , wherein a distance between at least one of the first vertices and an adjacent first vertex and a distance between the at least one of the first vertices and another adjacent first vertex are substantially randomized.
6. The panel of claim 5 , wherein the distance between the at least one of the first vertices and the adjacent vertex and the distance between the at least one of the first vertices and the other adjacent vertex are within a predetermined range.
7. The panel of claim 1 , wherein the second face is arranged on a surface of the transparent substrate opposite the first face.
8. The panel of claim 1 , wherein each first vertex is displaced in a substantially randomized direction, a distance between at least one of the first vertices and an adjacent first vertex and a distance between the at least one of the first vertices and another adjacent first vertex are substantially randomized.
9. The panel of claim 1 , wherein a variation of an area of each first cell is within 50% of a mean value of all first cells.
10. A panel of a touch sensitive screen, comprising:
a first transparent insulating substrate having a first face;
a first conductive pattern arranged as a layer on the first face, the first conductive pattern comprising a plurality of first cells each formed from a plurality of first vertices in the layer on the first face, a conductive first line connecting each first vertex to at least one adjacent first vertex, the first vertices having a substantially randomized distribution such that each conductive first line has a substantially random orientation relative to pixels of a display located below the transparent insulating substrate;
a second transparent insulating substrate having a second face; and
a second conductive pattern arranged as a layer on the second face, the second conductive pattern comprising conductive lines connected at vertices to form a mesh of cells in the layer on the second face, each of the conductive lines being arranged to connect two of the vertices such that each vertex is connected to at least one other vertex via a conductive line, wherein the second conductive pattern is in line with the first conductive pattern.
11. The panel of claim 10 , wherein each conductive line varies in width along the length of the respective conductive line from one vertex to another vertex.
12. The panel of claim 10 , wherein the width of the conductive line is narrower at a vertex than in the center of the conductive line.
13. The panel of claim 10 , wherein the width of conductive lines that overlap each other at each vertex is narrower at the vertex than along the length of the line not at the vertex.
14. The panel of claim 10 , wherein the width of the conductive lines is from about 1 μm to about 10 μm.
15. The panel of claim 10 , wherein the conductive lines are comprised of copper.
16. The panel of claim 10 , wherein a distance between at least one of the first vertices and an adjacent first vertex and a distance between the at least one of the first vertices and another adjacent first vertex are substantially randomized.
17. The panel of claim 16 , wherein the distance between the at least one of the first vertices and the adjacent vertex and the distance between the at least one of the first vertices and the other adjacent vertex are within a predetermined range.
18. The panel of claim 10 , wherein each first vertex is displaced in a substantially randomized direction, a distance between at least one of the first vertices and an adjacent first vertex and a distance between the at least one of the first vertices and another adjacent first vertex are substantially randomized.
19. The panel of claim 10 , wherein a variation of an area of each first cell is within 50% of a mean value of all first cells.
20. A method of electrode patterns for a touch panel of a touch sensitive screen, comprising:
forming a first conductive pattern arranged as a layer on a first face of a transparent insulating substrate, the first conductive pattern comprising a plurality of first cells each formed from a plurality of first vertices in the layer on the first face, a conductive first line connecting each first vertex to at least one-adjacent first vertex, the first vertices having a substantially randomized distribution such that each conductive first line has a substantially random orientation relative to pixels of a display located below the transparent insulating substrate; and
forming a second conductive pattern arranged as a layer on a second face of the transparent insulating substrate, the second conductive pattern comprising conductive second lines connected to second vertices to form a mesh of second cells in the layer on the second face, each of the conductive second lines being arranged to connect at least two of the second vertices such that each second vertex is connected to at least one other second vertex via a second conductive line.
21. The method of claim 20 , wherein the displaced locations are determined by an iterative process at random distances within a predefined range from the initial locations.
22. The method of claim 20 , wherein the conductive lines are comprised of copper.
23. The method of claim 20 , further comprising a second electrode pattern having a plurality of vertices, the second pattern arranged to overlap the first conductive pattern such that the vertices of the second pattern are located at a relative center of the cell of the first pattern.
24. The method of claim 20 , wherein forming the first conductive pattern comprises:
determining an initial location for each of the plurality of first vertices;
determining a substantially randomized displaced location for each of the plurality of first vertices from its initial location; and
forming a plurality of cells in the layer on the first face according to the first electrode pattern; and
connecting each first vertex to at least one adjacent first vertex with one of the conductive first lines.