Curved Surface Sensor Pattern

摘要

A touch sensor includes a flexible substrate, a plurality of sense electrodes and a plurality of drive electrodes disposed on the flexible substrate, a plurality of electrode branches, and a central spine. Each of the plurality of sense and drive electrodes includes electrode teeth, and electrode teeth of the sense electrodes are interdigitated with electrode teeth of the drive electrodes. Each particular electrode branch includes a portion of at least one of the drive electrodes and a portion of at least one of the sense electrodes. The central spine includes tracks that are coupled to the sense and drive electrodes. When the touch sensor is not formed into a three-dimensional shape, at least a portion of one of the electrode branches is separated from an adjacent electrode branch by a gap. When the touch sensor is formed into a three-dimensional shape, the gap is substantially eliminated, thereby forming a substantially continuous touch-sensitive surface.

主权项

1. A touch sensor comprising:
a flexible substrate; a plurality of sense electrodes and a plurality of drive electrodes disposed on the flexible substrate, each of the plurality of sense electrodes and the plurality of drive electrodes comprising a plurality of electrode teeth, wherein electrode teeth of the sense electrodes are interdigitated with electrode teeth of the drive electrodes; a plurality of electrode branches, each particular electrode branch comprising a portion of at least one of the drive electrodes and a portion of at least one of the sense electrodes; and a central spine comprising a plurality of tracks coupled to the plurality of sense and drive electrodes; wherein:
when the touch sensor is not formed into a three-dimensional shape, at least a portion of one of the electrode branches is separated from an adjacent electrode branch by a gap; andwhen the touch sensor is formed into the three-dimensional shape, the gap is substantially eliminated, thereby forming a substantially continuous touch-sensitive surface.