REDUNDANT TOUCHSCREEN ELECTRODES

• US 20110102331A1
• Filed: 10/29/2009
• Published: 05/05/2011
• Est. Priority Date: 10/29/2009
• Status: Abandoned Application

• Current Assignee: Atmel Corporation (Microchip Technology Incorporated)
• Original Assignee: QRG Limited
• Inventors: Philipp, Harald
• Application Number:
  US12/608,802
• Publication Number:
  US 20110102331A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires
• CPC Class Codes: Y10T 29/4913 Assembling to base an electrical component, e.g., capacitor, etc.

Abstract

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.

Claims

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.