Integrated light emitting display and sensors for detecting biologic characteristics
First Claim
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.
3 Assignments
0 Petitions
Accused Products
Abstract
A bio-sensor device, integrated with a display portion, includes a surface for touching by a body part, such as a finger. A light source, such as an array of LEDs, emit light through the surface so as to be reflected and partially absorbed by the body part An array of photodetectors detects light reflected back by the body part and generates signals corresponding to an image of the light reflection, which corresponds to the light absorption pattern in the body part. The light absorption pattern may correlate to a fingerprint, a blood vessel pattern, blood movement within the blood vessels, combinations thereof, or other biometric feature. A processor receives the signals from the photodetectors and analyzes the signals to determine a characteristic of the body part. The characteristic may be used to authenticate the user of the bio-sensor device by comparing the detected characteristic to a stored characteristic.
-
Citations
20 Claims
-
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, and the 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification