Touch Sensor Including Mutual Capacitance Electrodes and Self-Capacitance Electrodes

A touch sensor having a first edge and a second edge approximately perpendicular to the first edge, the touch sensor comprising:

• a first plurality of electrodes, wherein at least one of the first plurality of electrodes comprises a hollowed out portion;
• a second plurality of electrodes;
• a first plurality of nodes, each of the first plurality of nodes formed by a capacitive coupling between an electrode of the first plurality of electrodes and an electrode of the second plurality of electrodes;
• a third plurality of electrodes, wherein at least one of the third plurality of electrodes is positioned in the hollowed out portion of the at least one of the first plurality of electrodes;
• and
• a second node formed by the third plurality of electrodes, each of the third plurality of electrodes forming a portion of the second node by a self-capacitance coupling.

A device, comprising:

• a controller;
• and
• a touch sensor having a first edge and a second edge approximately perpendicular to the first edge, the touch sensor coupled to the controller, the touch sensor comprising:
• a first plurality of electrodes approximately parallel to the first edge;
• a second plurality of electrodes approximately parallel to the second edge;
• a first plurality of nodes, each of the first plurality of nodes formed by a capacitive coupling between an electrode of the first plurality of electrodes and an electrode of the second plurality of electrodes;
• a third plurality of electrodes;
• a second node formed by the third plurality of electrodes, each of the third plurality of electrodes forming a portion of the second node by a self-capacitance coupling;
• and
• wherein at least one of the portions of the second node is positioned in-between at least two of the first plurality of nodes.

A device, comprising:

• a controller;
• and
• a touch sensor having a first edge and a second edge approximately perpendicular to the first edge, the touch sensor coupled to the controller, the touch sensor comprising:
• a first plurality of electrodes, wherein at least one of the first plurality of electrodes comprises a hollowed out portion;
• a second plurality of electrodes;
• a first plurality of nodes, each of the first plurality of nodes formed by a capacitive coupling between an electrode of the first plurality of electrodes and an electrode of the second plurality of electrodes;
• a third plurality of electrodes, wherein at least one of the third plurality of electrodes is positioned in the hollowed out portion of the at least one of the first plurality of electrodes;
• and
• a second node formed by the third plurality of electrodes, each of the third plurality of electrodes forming a portion of the second node by a self-capacitance coupling.