Switchable area enhancement for flexible capacitive sensing

摘要

Embodiments of the invention generally provide an input device having a plurality of sensor electrodes that can be configured to be scanned in a first direction or a second direction. The input device includes a set of sensor electrodes and first and second sets of buses. The first buses are oriented in a first direction and the second buses are oriented in a second direction. The input device also includes a set of switching elements that are each configured to couple one of the sensor electrodes to either a bus in the first set of buses or a bus in the second set of buses. These embodiments allow the sensor electrodes to be scanned in a variety of patterns for flexible sensing functionality.

主权项

1. An input device comprising:
a plurality of sensor electrodes; a first plurality of buses selectively coupled to the plurality of sensor electrodes; a second plurality of buses ohmically separated from the first plurality of buses, the second plurality of buses selectively coupled to the sensor electrodes; a plurality of switching elements, wherein each switching element in the plurality of switching elements is paired with a sensor electrode in the plurality of sensor electrodes, and wherein a first switching element in the plurality of switching elements is operable to couple the sensor electrode to either a first bus in the first plurality of buses or a second bus in the second plurality of buses; and a processing system coupled to the first plurality of buses and coupled to the second plurality of buses, the processing system configured to:
drive signals with one or more buses in the first plurality of buses when the one or more buses in the first plurality of buses are selectively coupled to the plurality of sensor electrodes, anddrive signals with one or more buses in the second plurality of buses when the one or more buses in the second plurality of buses are selectively coupled to the plurality of sensor electrodes.