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US 11,029,756 B2Granted
Display with pixel level eye tracking
AssigneeIntel Corporation
InventorsRichmond F. Hicks, Khaled Ahmed, Divya Pratap
Life of this patent
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Abstract
In some examples, a display includes a plurality of display pixels. Each display pixel includes one or more light emitters. At least some of the plurality of display pixels also includes a light detector.
Claims25
A display comprising:
- a plurality of display pixels, a first pixel of the plurality of display pixels including:
- a light emitter to emit near infrared light;
- and
- a light detector to output a first signal indicative of detection of reflection of the near infrared light from an eye of a user in response to emission of the near infrared light by the light emitter, the light detector to output a second signal in the absence of the reflected near infrared light;
- and
- a processor in communication with the display to:
- subtract the second signal from the first signal to generate an adjusted first signal;
- determine, based on the adjusted first signal, that the first pixel is being observed by the user if a path of illumination of the near infrared light emitted by the light emitter is coaxial with an optical path associated with the reflection of the near infrared light off the eye of the user;
- and
- detect, based on the adjust first signal, that the first pixel is not being observed by the user if the path of illumination of the near infrared light emitted by the light emitter of that pixel is not coaxial with the optical path.
7 more elements
A method of detecting display pixels observed by a user of a display, the method comprising:
- subtracting second signal data from a light detector of a first pixel of the display from first signal data from the light detector to generate first adjusted signal data, the first signal data generated by the light detector in response to detection of reflection of near infrared light from an eye of the user by the light detector, the near infrared light emitted by a light emitter of the first pixel or a second pixel of the display, the second signal data generated by the light detector in the absence of the reflected near infrared light;
- determining, by executing an instruction with a processor and based on the first adjusted signal data, that the first pixel is being observed by the user if a path of illumination of the near infrared light is coaxial with an optical path associated with the reflection of the near infrared light off the eye of the user;
- and
- determining, by executing an instruction with the processor and based on the first adjusted signal data, that the first pixel is not being observed by the user if the path of illumination of the near infrared light from the light emitter is not coaxial with the optical path.
1 more element
A method of manufacturing a display, the method comprising:
- placing on a substrate one or more light emitters for each of a plurality of display pixels, the one or more light emitters to emit near infrared light toward an eye of a user of the display;
- placing on the substrate a light detector for at least one of the plurality of display pixels, the light detector to detect reflection of the near infrared light emitted by the one or more light emitters from the eye of the user;
- and
- placing a lens over the light detector to affect an angle of the near infrared light detected by the light detector, the lens not over the one or more light emitters.
1 more element
Dependencies are inferred from the claim text.