Transparent High-Resistivity Layer for Electrostatic Friction Modulation over a Capacitive Input Sensor

An electronic device comprising:

• an antireflective coating defining an interface surface configured to receive a user input;
• a high-resistivity layer below the antireflective coating;
• a dielectric layer below the high-resistivity layer;
• and
• a capacitive input sensor positioned below the dielectric layer and configured to capacitively couple to the high-resistivity layer to drive the high-resistivity layer to high voltage to modulate friction between the interface surface and the user input.

A method comprising:

• disposing a dielectric onto a surface of a capacitive input sensor;
• disposing a layer of high-resistivity material onto the dielectric, the layer comprising:
• a first region doped with a high-conductivity material to a first doping concentration;
• and
• a second region doped with a high-conductivity material to a second doping concentration;
• and
• disposing an antireflective coating over the layer of high-resistivity material.