CIRCULAR OUTLINE SINGLE LAYER PATTERN
First Claim
1. A capacitive sensor, comprising:
- a sensor substrate; and
a plurality of sensor electrodes disposed on a first side of the sensor substrate and are arranged in a symmetric circular pattern, wherein the plurality of sensor electrodes comprises an inner circle of sensor electrodes and an outer ring of sensor electrodes disposed radially outward from the inner circle of sensor electrodes;
wherein the plurality of sensor electrodes are configured to sense an input object in a sensing region of the capacitive sensor; and
wherein each of the plurality of sensor electrodes has a substantially equal surface area.
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Accused Products
Abstract
A circular, single-layer sensor electrode pattern for input devices, such as wearable devices, is described. The sensor electrode pattern features transmitter electrodes and receiver electrodes tiled in alternating fashion, such that each receiver electrode is surrounded by transmitter electrodes. The individual sensor electrodes of the described pattern are designed to provide a substantially uniform electrode area size across the sensor. Additionally, the sensor electrode pattern is arranged to be symmetric across both horizontal and vertical axes. The provided characteristics of the sensor electrode pattern leads to a sensor structure having uniform absolute capacitive sensing measurements for all sensor electrodes as well as uniform transcapacitive sensing measurements for all “pixels.”
36 Citations
20 Claims
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1. A capacitive sensor, comprising:
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a sensor substrate; and a plurality of sensor electrodes disposed on a first side of the sensor substrate and are arranged in a symmetric circular pattern, wherein the plurality of sensor electrodes comprises an inner circle of sensor electrodes and an outer ring of sensor electrodes disposed radially outward from the inner circle of sensor electrodes; wherein the plurality of sensor electrodes are configured to sense an input object in a sensing region of the capacitive sensor; and
wherein each of the plurality of sensor electrodes has a substantially equal surface area. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A capacitive sensor device comprising:
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a sensor substrate; a plurality of sensor electrodes disposed on a first side of the sensor substrate and are arranged in a symmetric circular pattern, wherein the plurality of sensor electrodes are configured to sense an input object in a sensing region of the capacitive sensor device;
wherein each of the plurality of sensor electrodes has a substantially equal surface area; anda processing system communicatively coupled to the plurality of sensor electrodes and configured to perform mutual capacitive sensing by; driving a sensing signal on a first subset of sensor electrodes of the plurality of sensor electrodes; receiving a resulting signal on a second subset of sensor electrodes of the plurality of sensor electrodes; the processing system also configured to perform absolute capacitive sensing with the plurality of sensor electrodes; wherein each of the sensor electrodes from the first subset of sensor electrodes shares a border with sensor electrodes of the second subset of sensor electrodes. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A processing system for a touch screen device, the processing system comprising:
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a sensor module communicatively coupled to a plurality of sensor electrodes, wherein the plurality of sensor electrodes are disposed on a first side of a sensor substrate and are arranged in a symmetric circular pattern, wherein the plurality of sensor electrodes are configured to sense an input object in a sensing region of the touch screen device, wherein each of the plurality of sensor electrodes has a substantially equal surface area, wherein the sensor module is configured to; drive a sensing signal on a first subset of sensor electrodes of the plurality of sensor electrodes; receive a resulting signal on a second subset of sensor electrodes of the plurality of sensor electrodes; wherein each of the sensor electrodes from the first subset of sensor electrodes shares a border with sensor electrodes of the second subset of sensor electrodes. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification