Two-sided touch sensor

摘要

Touch sensors sensitive to touches on two sides are incorporated into electronic devices and accept input from either side of the device, such as a front and a back of the device. This increases available input area without doubling the number of touch sensors within the device. When combined with one or more displays, low profile two-sided devices are possible.

主权项

1. A device comprising:
an interpolating force-sensitive resistor touch sensor having a first side and a second side opposite one another, configured to accept touch input from the first side, the second side, or both, and configured to distinguish between touches from the first side and touches from the second side; and a display adjacent to and coincident with the first side of the touch sensor and configured to present an image; wherein:
the interpolating force-sensitive resistor touch sensor includes a plurality of adjacent touch sensor layers;touches are detected based at least in part on one of a resistance measurement or capacitance measurement between two or more of the adjacent touch sensor layers;touches from the first side being touches detected based on measurements involving at least a first outermost touch sensor layer of the plurality of adjacent touch sensor layers and one of a second different outermost touch sensor layer of the plurality of adjacent touch sensor layers or a particular different one of the plurality of adjacent touch sensor layers; andtouches from the second side being touches detected based on measurements involving at least the second different outermost touch sensor layer of the plurality of adjacent touch sensor layers and one of the first outermost touch sensor layer of the plurality of adjacent touch sensor layers or the particular different one of the plurality of adjacent touch sensor layers.