REDUNDANT TOUCHSCREEN ELECTRODES
A touchscreen display assembly has a substrate and a plurality of electrodes distributed across at least an active area of the substrate. At least one of the electrodes comprises a group of redundant electrode lines electrically coupled to an external electrical circuit connection and further coupled to one another remote from the external electrical circuit connection.
1 . An assembly, comprising:
a substrate; and
a plurality of electrodes distributed across at least an active touchscreen area of the substrate;
wherein at least one electrode of the plurality of electrodes comprises a group of redundant electrode lines electrically coupled to one another at multiple points along the at least one electrode.
2 . The touchscreen display assembly of claim 1 , further comprising one or more bridging elements to couple between the electrode lines between ends of the at least one electrode.
3 . The touchscreen display assembly of claim 1 , wherein the group of redundant electrode lines comprises electrode lines having a line width of 10 micrometers or less.
4 . The touchscreen display assembly of claim 1 , wherein the plurality of electrodes have a line density of 10% or less in the active touchscreen area.
5 . The touchscreen display assembly of claim 1 , wherein the group of electrode lines of the at least one electrode are substantially parallel to one another.
6 . The touchscreen display assembly of claim 5 , wherein a distance between each of the redundant electrode lines is between five times and fifty times the width of an individual redundant electrode line.
7 . A method of forming a touchscreen display assembly, comprising:
forming a plurality of touchscreen electrodes distributed across at least an active touchscreen area of a substrate;
wherein at least one electrode of the plurality of touchscreen electrodes comprises a group of redundant electrode lines electrically coupled to an external electrical circuit connection, the redundant electrode lines further coupled to one another remote from the external electrical circuit connection.
8 . The method of forming a touchscreen display assembly of claim 7 , further comprising overlaying the touchscreen substrate on a display.
9 . The method of forming a touchscreen display assembly of claim 7 , further comprising coupling electrode lines of the group of redundant electrode lines using bridging elements positioned between ends of the at least one electrode.
10 . The method of forming a touchscreen display assembly of claim 7 , wherein the the at least one electrode comprises electrode lines having a line width of 10 micrometers or less.
11 . The method of forming a touchscreen display assembly of claim 7 , wherein the plurality of touchscreen elements have a line density of 10% or less in the active touchscreen area.
12 . The method of forming a touchscreen display assembly of claim 7 , wherein the electrode lines of the at least one electrode are substantially parallel to one another.
13 . The method of forming a touchscreen display assembly of claim 12 , wherein a distance between electrode lines of the at least one electrode is between five times and fifty times the width of an individual electrode line.
14 . The method of forming a touchscreen display of claim 7 , wherein forming a plurality of touchscreen electrodes comprises printing the electrodes on the substrate.
15 . An electronic device, comprising:
a display; and
a touchscreen comprising a plurality of touchscreen electrodes distributed across at least an active touchscreen area of a substrate overlaying the display;
wherein at least one electrode of the plurality of touchscreen electrodes comprises a group of redundant electrode lines electrically coupled to an external electrical circuit connection, the redundant electrode lines further coupled to one another remote from the external electrical circuit connection.
16 . The electronic device of claim 15 , further comprising one or more bridging elements coupling the redundant electrode lines between ends of the at least one electrode.
17 . The electronic device of claim 15 , wherein the plurality of touchscreen electrodes comprise elements having a line width of 10 micrometers or less.
18 . The electronic device of claim 15 , wherein the plurality of touchscreen electrodes have a line density of 10% or less in the active touchscreen area.
19 . The electronic device of claim 15 , wherein the redundant electrode lines of the at least one electrode are substantially parallel to one another.
20 . The electronic device of claim 19 , wherein the distance between the redundant electrode lines is between five times and fifty times the width of an individual redundant electrode line.
21 . A method of forming an electronic device, comprising:
forming a display; and
forming a touchscreen overlaying the display comprising a plurality of touchscreen electrodes distributed across at least an active touchscreen area of a substrate overlaying the display;
wherein at least one electrode of the plurality of touchscreen electrodes comprises a group of three or less redundant electrode lines electrically coupled to an external electrical circuit connection and further coupled to one another remote from their external electrical circuit connection.