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Integrated light emitting display and sensors for detecting biologic characteristics

  • US 10,713,458 B2
  • Filed: 06/08/2017
  • Issued: 07/14/2020
  • Est. Priority Date: 05/23/2016
  • Status: Active Grant
First Claim
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1. A bio-sensor device comprising:

  • a display portion having a light passing panel, wherein the display portion comprises a two-dimensional pixel array containing light emitting diodes emitting a first set of peak wavelengths and configured to display a full color image;

    a two-dimensional array of light sources, distributed within the pixel array, configured to emit light through the light passing panel so as to be partially reflected and absorbed by blood in a person'"'"'s finger overlying the display portion, the light sources being co-planer with the pixels and emitting light having at least a peak wavelength not within the first set of peak wavelengths;

    a two-dimensional array of photodetectors distributed within the pixel array and arranged to detect light reflected back by a surface of the finger and the blood in the finger, the photodetectors generating first signals corresponding to the light reflected back, the photodetectors being co-planer with the pixels;

    a controller coupled to the display portion and the array of light sources,the controller being configured to control pixels in the display portion to emit light of one or more peak wavelengths during a first period of time to detect a fingerprint of the finger and capture a first image of the fingerprint, wherein the array of light sources do not emit light during the first period of time, andthe controller bring configured to control the array of light sources during a second period of time to detect the blood in the finger and capture a second image of the blood in the finger; and

    detection circuitry coupled to the photodetectors configured for analyzing the first signals to detect the fingerprint using only the pixels energized in the display portion during the first period of time and to detect the blood in the finger using light emitted by at least the array of light sources during the second period of time.

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