Patent ID: 8638316

Claim:
A capacitive sensor array, comprising: a first plurality of sensor elements; and a second sensor element capacitively coupled with each of the first plurality of sensor elements, wherein the second sensor element comprises: a first main trace and a second main trace, wherein the first main trace and the second main trace intersect each of the first plurality of sensor elements, wherein each of the first main trace and the second main trace cross at least one of a plurality of unit cells associated with the second sensor element, wherein each of the plurality of unit cells designates a set of locations nearer to an intersection between the second sensor element and a corresponding one of the first plurality of sensor elements than to any other intersection between sensor elements, a connecting subtrace electrically coupled to both the first main trace and the second main trace, and within each unit cell, at least one primary subtrace branching away from the first main trace or the second main trace.