Touch sensor having a single sensor layer

摘要

In one aspect, a touch sensor includes a dielectric surface layer; drive electrodes disposed on the dielectric surface layer and arranged radially about a center, the drive electrodes defining a perimeter about the center, and a sense electrode disposed on the dielectric surface layer and arranged between two of the drive electrodes. Each drive electrode can include: an outer radial section extending radially along the perimeter; a central section extending from the outer radial section towards the center; and an inner radial section comprising a first section extending radially away from the central section in a first radial direction and a second section, shorter than the first section, extending radially away from the central section in a second radial direction.

主权项

1. A touch sensor comprising:
a dielectric surface layer; a plurality of drive electrodes disposed on the dielectric surface layer and arranged radially about a center, the drive electrodes defining a perimeter about the center, wherein each drive electrode comprises:
an outer radial section extending radially along the perimeter;a central section extending from the outer radial section towards the center; andan inner radial section comprising a first section extending radially away from the central section in a first radial direction and a second section, shorter than the first section, extending radially away from the central section in a second radial direction; and a sense electrode disposed on the dielectric surface layer and arranged between two of the drive electrodes, wherein a distance between the sense electrode and the outer radial section of each of the two of the drive electrodes is associated with a thickness of each section of the drive electrode.