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US 12,525,051 B2Granted
Photo-capacitance sensor
AssigneeIbmetrix Limited
InventorsArokia Nathan, William Byrne
Life of this patent
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Abstract
A photo-capacitance sensor includes an input surface and one or more light sources arranged to illuminate a portion of the input surface. The photo-capacitance sensor also includes an array of photo-capacitors arranged to receive light from the one or more light sources which is reflected from an object in contact with, or proximate to, the illuminated portion of the input surface. The array of photo-capacitors is configured for detecting a reflective pattern of the object.
Claims17
An apparatus comprising:
- a sensor for photo-capacitance measurements and capacitive touch measurements, comprising:
- an input surface;
- one or more light sources arranged to illuminate a portion of the input surface;
- an array of photo-capacitors arranged to receive light from the one or more light sources which is reflected from an object in contact with, or proximate to, the illuminated portion of the input surface;
- wherein the array of photo-capacitors is configured for detecting a reflective pattern of the object;
- and
- wherein the array of photo-capacitors is arranged to capacitively couple to a conductive object in contact with, or proximate to, the illuminated portion of the input surface;
- and
- a controller connected to the sensor and configured to perform photo-capacitance measurements and capacitive touch measurements using the array of photo-capacitors of the sensor.
6 more elements
Dependencies are inferred from the claim text.