Fingerprint sensors for mobile devices
First Claim
1. A display assembly comprising:
- a display panel;
a backlight assembly located below the display panel that includesa backlight configured to generate light that illuminates the display panel,an optically clear adhesive layer disposed between the backlight and a diffuser,wherein the optically clear adhesive layer substantially eliminates an air gap between the backlight and the diffuser, andthe diffuser configured to diffuse the light emitted toward the display panel by the backlight; and
a fingerprint sensor located below the backlight assembly.
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Accused Products
Abstract
Various embodiments concern fingerprint sensors for mobile devices. By modifying one or more layers of a display assembly, a fingerprint sensor can be positioned directly beneath the display. For example, the air gap within the backlight structure could be replaced by an optically clear adhesive that allows waves emitted by a fingerprint sensor to properly propagate through the display assembly. In some embodiments, a fingerprint sensor is set within a recess in the display assembly. For example, a depression could be created in the protective substrate, and the fingerprint sensor could be set within the depression using an optically clear adhesive. The functionality of a fingerprint sensor could also be replicated by increasing the density of touch-sensing elements in certain areas of a display assembly that utilizes in-cell technology.
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Citations
28 Claims
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1. A display assembly comprising:
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a display panel; a backlight assembly located below the display panel that includes a backlight configured to generate light that illuminates the display panel, an optically clear adhesive layer disposed between the backlight and a diffuser, wherein the optically clear adhesive layer substantially eliminates an air gap between the backlight and the diffuser, and the diffuser configured to diffuse the light emitted toward the display panel by the backlight; and a fingerprint sensor located below the backlight assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A display assembly comprising:
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a protective substrate having an outward-facing side with which a user makes contact during an interaction with the display assembly, and an inward-facing side having a depression formed therein; and a substantially transparent fingerprint sensor that is set within the depression. - View Dependent Claims (12, 13, 14, 15)
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16. A method comprising:
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acquiring a protective substrate to be used in a display assembly, wherein the protective substrate includes an outward-facing side with which a user makes contact during an interaction with the display assembly, and an inward-facing side; forming a depression on the inward-facing side of the protective substrate; setting a substantially transparent fingerprint sensor within the depression; and affixing the substantially transparent fingerprint sensor within the depression using an optically clear adhesive. - View Dependent Claims (17, 18, 19)
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20. A display assembly comprising:
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a protective substrate; and an integrated display panel located below the protective substrate, wherein the integrated display panel is divided into a plurality of cells that include display elements, touch-sensing elements, or a combination thereof, wherein the plurality of cells includes a first cell having a first count of touch-sensing elements, and a second cell having a second count of touch-sensing elements sufficient to simulate the functionality of a fingerprint scanner, and wherein the first count and the second count are different values. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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Specification