Trace shielding for input devices
First Claim
1. A touch screen device with an integrated capacitive sensing device comprising:
- a display device having a layer;
a plurality of common electrodes disposed in the display device and on a first side of the layer, the plurality of common electrodes configured for updating the display device and for transmitting transmitter signals for capacitive sensing;
a plurality of receiver electrodes disposed on a second side of the layer;
a plurality of conductive routing traces disposed on the first side of the layer and coupled to the plurality of common electrodes; and
a first shield electrode disposed on the first side of the layer of the display device and positioned to shield the plurality of conductive routing traces from the plurality of receiver electrodes, wherein the first shield electrode is above the plurality of conductive routing traces and below the plurality of receiver electrodes.
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0 Petitions
Accused Products
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.
9 Citations
20 Claims
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1. A touch screen device with an integrated capacitive sensing device comprising:
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a display device having a layer; a plurality of common electrodes disposed in the display device and on a first side of the layer, the plurality of common electrodes configured for updating the display device and for transmitting transmitter signals for capacitive sensing; a plurality of receiver electrodes disposed on a second side of the layer; a plurality of conductive routing traces disposed on the first side of the layer and coupled to the plurality of common electrodes; and a first shield electrode disposed on the first side of the layer of the display device and positioned to shield the plurality of conductive routing traces from the plurality of receiver electrodes, wherein the first shield electrode is above the plurality of conductive routing traces and below the plurality of receiver electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for capacitive sensing in a display device comprising:
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a plurality of common electrodes configured for display updating and for capacitive sensing; a plurality of conductive routing traces coupled to the plurality of common electrodes, the plurality of conductive routing traces and the plurality of common electrodes disposed on a first side of a layer of the display device; a driver module coupled to the plurality of conductive routing traces and configured to drive sensor signals onto the plurality of common electrodes; a plurality of receiver electrodes disposed on a second side of the layer; and a first shield electrode disposed on the first side of the layer of the display device and positioned to shield the plurality of conductive routing traces from the plurality of receiver electrodes in a manner that reduces influence of a presence of an input object on capacitive coupling between the plurality of receiver electrodes and conductive routing traces, wherein the first shield electrode is above the plurality of conductive routing traces and below the plurality of receiver electrodes. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification