Abstract: A touch panel includes first and second layers of electrodes. The first layer of electrodes is electrically connected in an arrangement that produces a regional ambiguity in a touch location determined using the first electrodes with respect to a first axis. The second layer of electrodes is configured to resolve the regional ambiguity of the touch location with respect to the first axis. Conversely, the second layer of electrodes may also be connected in an arrangement that creates regional ambiguity in touch location determination of the second layer, and the first layer of electrodes may be configured to resolve that regional ambiguity.

Abstract: A tactile touch-sensing system that includes a touch sensor, touch-generating pads, and tactile buttons. The touch sensor is configured to produce an electrical signal in response to a touch. The touch-generating pads cover at least a part of the touch sensor and are configured not to cause a touch on the touch sensor before they are activated. A user can activate a touch-generating pad by pressing a tactile button associated with the touch-generating pad. In response to being pressed, the tactile button is configured to provide tactile feedback to the user. The touch-generating pad, when activated by the tactile button, causes a touch on the touch sensor.