Device and method for force and proximity sensing employing an intermediate shield electrode layer

摘要

Methods, systems and devices are described for use with an electronic system. The device includes a pliable component having an input surface and a first plurality of sensor electrodes; a support substrate spaced apart from the pliable component; a second plurality of sensor electrodes disposed on a second substrate; a spacing layer disposed between the pliable component and the support substrate, the spacing layer configured to locally deform in response to a force applied to the input surface; and a shield electrode layer disposed between the first plurality and the second plurality of sensor electrodes.

主权项

1. An input device for an electronic system, comprising:
a pliable component having an input surface and a first plurality of sensor electrodes, the first plurality of sensor electrodes comprising a first subset characterized by a first geometric pattern and a second subset characterized by a second geometric pattern; a support substrate spaced apart from the pliable component; a second plurality of sensor electrodes disposed on a second substrate; a spacing layer disposed between the pliable component and the support substrate, the spacing layer configured to locally deform in response to a force applied to the input surface; and a shield electrode layer:
disposed between the first plurality of sensor electrodes and the second plurality of sensor electrodes;comprising an array of conductive segments overlaying the first geometric pattern and an array of voids overlaying the second geometric pattern; andconfigured to electrically shield the first plurality of sensor electrodes from the second plurality of sensor electrodes so that a touch image measured is substantially independent of the force applied to the input surface.