SYSTEMS AND METHODS FOR REDUCING UNWANTED REFLECTIONS IN DISPLAY SYSTEMS INCORPORATING AN UNDER DISPLAY BIOMETRIC SENSOR
First Claim
1. An optical sensor system, comprising:
- a display substrate;
display pixel circuitry disposed over the display substrate;
a first circular polarizer disposed over the display substrate and the display pixel circuitry;
a transparent cover sheet disposed over the first circular polarizer, wherein a top surface of the transparent cover sheet provides a sensing surface for an object;
a sensor layer disposed below the display substrate, the sensor layer having a plurality of photosensors; and
a second circular polarizer disposed between the sensor layer and the display substrate.
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Accused Products
Abstract
An optical sensor system includes a display substrate, display pixel circuitry including a plurality of light emitting display elements or pixels disposed over the display substrate, a first circular polarizer disposed over the display substrate and the display pixel circuitry, and a transparent cover sheet disposed over the first circular polarizer. A top surface of the transparent cover sheet provides a sensing surface for an object such as a finger. The optical sensor system also includes a sensor layer disposed below the display substrate, the sensor layer having a plurality of photosensors, and a second circular polarizer disposed between the sensor layer and the display substrate.
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Citations
20 Claims
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1. An optical sensor system, comprising:
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a display substrate; display pixel circuitry disposed over the display substrate; a first circular polarizer disposed over the display substrate and the display pixel circuitry; a transparent cover sheet disposed over the first circular polarizer, wherein a top surface of the transparent cover sheet provides a sensing surface for an object; a sensor layer disposed below the display substrate, the sensor layer having a plurality of photosensors; and a second circular polarizer disposed between the sensor layer and the display substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An optical display device, comprising:
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a display substrate; display pixel circuitry disposed over the display substrate; a circular polarizer disposed over the display substrate and the display pixel circuitry; a transparent cover sheet disposed over the circular polarizer, wherein a top surface of the transparent cover sheet provides a sensing surface for an object; and a quarter wave retarder disposed over the circular polarizer. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. An optical fingerprint sensor device, comprising:
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an image sensor layer having a plurality of photosensors; an angular selective structure disposed over the image sensor layer; and a circular polarizer disposed over the image sensor layer, wherein the circular polarizer includes a quarter wave retarder layer disposed over a linear polarizer layer. - View Dependent Claims (19, 20)
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Specification