Sensor electrode routing for an integrated device

Patent metadata

Field	Value
Publication number	US-9400583-B2
Application number	US-201514743672-A
Country	US
Kind code	B2
Filing date	Jun 18, 2015
Priority date	Jul 13, 2011
Publication date	Jul 26, 2016
Grant date	Jul 26, 2016

Abstract

Embodiments of the present invention generally provide shield electrodes for shielding one or more conductive routing traces from one or more receiver electrodes in an input device comprising a display device integrated with a sensing device to reduce the capacitive coupling between the conductive routing traces and the receiver electrodes. The shield electrode may be configured to reduce the effect of an input object on the capacitive coupling between the conductive routing traces and the receiver electrodes. In other embodiments, end portions of common electrodes shield the receiver electrodes from the conductive routing traces, thereby reducing the capacitive coupling between the receiver electrodes and the conductive routing traces.

First claim

What is claimed is:

1. A touch screen device with an integrated capacitive sensing device comprising:
a facesheet;
a display device comprising a plurality of common electrodes configured for updating the display device and for capacitive sensing;
a plurality of sensor electrodes, each of the plurality of sensor electrodes comprising at least one common electrode of the plurality of common electrodes;
an insulating layer disposed on a side of the plurality of sensor electrodes facing away from the facesheet; and
a plurality of conductive routing traces disposed on the insulating layer, wherein each of the plurality of conductive routing traces are coupled to a respective one of the plurality of sensor electrodes through a via, at least a first conductive routing trace of the plurality of conductive routing traces passing under at least two sensor electrodes of the plurality of sensor electrodes that are not coupled to the first conductive routing trace, and wherein the plurality of sensor electrodes are disposed between the facesheet and the plurality of conductive routing traces.

2. The touch screen device of claim 1 , further comprising:
a processing system integrated circuit (IC) and wherein the processing system (IC) is coupled to plurality of the sensor electrodes through the plurality of conductive routing traces.

3. A touch screen device with an integrated capacitive sensing device comprising:
a facesheet;
a display device comprising a plurality of common electrodes configured for updating the display device and for capacitive sensing;
a plurality of sensor electrodes, each of the plurality of sensor electrodes comprising at least one common electrode of the plurality of common electrodes;
an insulating layer disposed on a side of the plurality of sensor electrodes facing away from the facesheet; and
a plurality of conductive routing traces disposed on the insulating layer, wherein each of the plurality of conductive routing traces are coupled to a respective one of the plurality of sensor electrodes through a via, wherein the plurality of sensor electrodes are disposed between the facesheet and the plurality of conductive routing traces, and wherein the plurality of conductive routing traces are routed in parallel below the sensor electrodes.

4. The touch screen device of claim 1 further comprising:
an OLED layer, wherein the plurality of conductive routing traces are disposed between the OLED layer and the plurality of sensor electrodes.

5. The touch screen device of claim 1 , wherein the first conductive routing trace of the plurality of conductive routing trace is coupled to a first sensor electrode of the plurality of sensor electrodes and is routed beneath a second sensor electrode of the plurality of sensor electrodes.

6. The touch screen device of claim 1 , wherein the first conductive routing trace of the plurality of conductive routing trace and a second conductive routing trace of the plurality of conductive routing trace are coupled to a first sensor electrode of the plurality of sensor electrode.

7. The touch screen device of claim 1 , wherein the facesheet is a lens for the display device.

8. An input device comprising:
a facesheet;
a display device comprising a plurality of common electrodes configured for updating the display device and for capacitive sensing;
a plurality of sensor electrodes, each of the plurality of sensor electrodes comprising at least one common electrode of the plurality of common electrodes;
an insulating layer disposed on a side of the plurality of sensor electrodes facing away from the facesheet;
a plurality of conductive routing traces disposed on the insulating layer, wherein each of the plurality of conductive routing traces are coupled to one of the plurality of sensor electrodes through a via, at least a first conductive routing trace of the plurality of conductive routing traces passing under at least two sensor electrodes of the plurality of sensor electrodes that are not coupled to the first conductive routing trace, and wherein the plurality of sensor electrodes are disposed between the facesheet and the plurality of conductive routing traces; and
a processing system configured to be coupled to the plurality of conductive routing traces and to drive plurality of sensor electrodes for capacitive sensing.

9. The input device of claim 8 , wherein driving the plurality of sensor electrodes for capacitive sensing comprises:
driving the plurality of sensor electrodes for absolute capacitive sensing.

10. The input device of claim 8 , where driving the plurality of sensor electrodes for capacitive sensing comprises;
driving a first one of the plurality of sensor electrodes with a transmitter signal for transcapacitive sensing.

11. The input device of claim 8 , wherein the processing system comprises:
a first integrated circuit and a second integrated circuit and wherein the first integrated circuit is configured to drive the sensor electrodes for capacitive sensing.

12. An input device comprising:
a facesheet;
a display device comprising a plurality of common electrodes configured for updating the display device and for capacitive sensing;
a plurality of sensor electrodes, each of the plurality of sensor electrodes comprising at least one common electrode of the plurality of common electrodes;
an insulating layer disposed on a side of the plurality of sensor electrodes facing away from the facesheet;
a plurality of conductive routing traces disposed on the insulating layer, wherein each of the plurality of conductive routing traces are coupled to one of the plurality of sensor electrodes through a via, and wherein the plurality of sensor electrodes are disposed between the facesheet and the plurality of conductive routing traces; and
a processing system configured to be coupled to the plurality of conductive routing traces and to drive plurality of sensor electrodes for capacitive sensing, and wherein the plurality of conductive routing traces are routed in parallel below the sensor electrodes.

13. The input device of claim 12 further comprising:
an OLED layer, wherein the plurality of conductive routing traces are disposed between the OLED layer and the plurality of sensor electrodes.

14. The input device of claim 8 , wherein the first conductive routing trace of the plurality of conductive routing trace is coupled to a first sensor electrode of the plurality of sensor electrodes and is routed beneath a second sensor electrode of the plurality of sensor electrodes.

15. The input device of claim 8 , wherein the first conductive routing trace of the plurality of conductive routing trace and a second conductive routing trace of the plurality of conductive routing trace are coupled to a first sensor electrode of the plurality of sensor electrode.

16. The input device of claim 8 further comprising a plurality of receiver electrodes.

17. The input device of claim 16 , wherein the receiver electrodes are disposed between the facesheet and the plurality of sensor electrodes.

18. A processing system for an input device comprising a display device with an integrated capacitive sensing device, the processing system comprising:
a driver module configured to couple to a plurality of sensor electrodes through a plurality of conductive routing traces disposed on an insulator layer, the insulting layer disposed below the sensor electrodes, wherein each sensor electrode comprises at least one common electrode of the display device, the common electrodes configured for updating a display o

Assignees

• Synaptics Inc

Inventors

• Reynolds Joseph Kurth
• Shepelev Petr

Classifications

• G06F3/047

  using sets of wires, e.g. crossed wires · CPC title

• H05K1/115

  Via connections; Lands around holes or via connections (H05K1/112 takes precedence) · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• H05K1/0306

  Inorganic insulating substrates, e.g. ceramic, glass · CPC title

• G06F3/044 Primary

  by capacitive means · CPC title