Touch sensor panel architecture with multiple sensing mode capabilities

A touch sensor panel comprising:

• a first layer including a plurality of electrodes of a first type, wherein the electrodes of the first type are configured to, during a first time period, operate as mutual capacitance drive electrodes;
• and
• a second layer including a plurality of electrodes of a second type overlapping with the electrodes of the first type, wherein the electrodes of the second type are configured to:
• during the first time period, operate as mutual capacitance sense electrodes;
• and
• during a second time period, operate as self-capacitance electrodes.

A method for operating a touch sensor panel, the method comprising:

• operating a plurality of electrodes of a first type, during a first time period, as touch sensing electrodes, wherein the electrodes of the first type are in a first layer of the touch sensor panel and are coupled to respective traces;
• and
• operating a plurality of electrodes of a second type:
• during the first time period, as guard electrodes for the respective traces of the electrodes of the first type;
• and
• during a second time period, as touch sensing electrodes,
• wherein the electrodes of the second type are in a second layer of the touch sensor panel and overlap with the respective traces of the electrodes of the first type.

A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a processor, cause the processor to perform a method for operating a touch sensor panel comprising:

• operating a plurality of electrodes of a first type, during a first time period, as touch sensing electrodes, wherein the electrodes of the first type are in a first layer of the touch sensor panel and are coupled to respective traces;
• and
• operating a plurality of electrodes of a second type:
• during the first time period, as guard electrodes for the respective traces of the electrodes of the first type;
• and
• during a second time period, as touch sensing electrodes,
• wherein the electrodes of the second type are in a second layer of the touch sensor panel and overlap with the respective traces of the electrodes of the first type.