Screen defect and contamination detection for mobile devices

1 . A method of mitigating a contaminant on a display of a mobile device, the method comprising:

scanning the display using a scanner in the mobile device;

generating one or more images of the contaminant based on the scanning;

detecting the contaminant on the display based on the one or more images;

identifying a type of the contaminant on the display using the one or more images; and

performing a mitigation action to mitigate the contaminant based on the identification of the type of the contaminant including highlighting a contaminant area on the display, wherein the contaminant area contains the contaminant.

2 . The method of claim 1 , wherein the scanner is an ultrasonic scanner.

3 . The method of claim 2 , further comprising:

changing a frequency of ultrasonic pulses used by the ultrasonic scanner to generate the one or more images.

4 . The method of claim 2 , further comprising:

changing a range gate delay of the ultrasonic scanner to generate the images.

5 . The method of claim 2 , wherein the ultrasonic scanner is an ultrasonic full screen fingerprint sensor.

6 . The method of claim 1 , wherein performing the mitigation action comprises:

displaying a user interface (UI) window including a mitigation message.

7 . The method of claim 6 , wherein the mitigation message includes text identifying the contaminant.

8 . The method of claim 6 , wherein the mitigation message includes instructions to mitigate the contaminant.

9 . The method of claim 1 , further comprising:

receiving an acknowledgement that the mitigation action is completed; and

rescanning the display in a contaminant area to confirm the contaminant was mitigated.

10 . The method of claim 9 , wherein receiving the acknowledgement further comprises:

receiving an input from a user indicating that the mitigation action is completed.

11 . The method of claim 9 , wherein receiving the acknowledgement further comprises:

receiving a completion indication from an automated mitigation action.

12 . The method of claim 1 , wherein performing the mitigation action further comprises:

identifying the contaminant as a scratch; and

performing a self-healing process to mitigate the scratch.

13 . The method of claim 12 , wherein the self-healing process includes using at least one of heat, light, or electric current to mitigate the scratch.

14 . The method of claim 13 , wherein the self-healing process is limited to a contaminant area.

15 . The method of claim 1 , wherein the display is a rollable display and performing the mitigation action further comprises:

preventing the display from being rolled up.

16 . The method of claim 1 , wherein the mitigation action to mitigate is limited to a contaminant area that includes the contaminant.

17 . The method of claim 1 , wherein identifying the contaminant includes identifying the contaminant as a solid, a liquid or a scratch.

18 . The method of claim 17 , wherein identifying the contaminant further comprises:

using a neural network trained to identify contaminants.

19 . The method of claim 17 , wherein identifying the contaminant further comprises:

identifying the contaminant as weak or strong based on a time to identify the contaminant.

20 . A mobile device, comprising:

an ultrasonic scanner;

a memory; and

at least one processor communicatively coupled to the memory and ultrasonic scanner and configured to mitigate a contaminant on a display of the mobile device, the at least one processor, memory and ultrasonic scanner cooperatively configured to:

scan the display;

generate one or more images of the contaminant based on the scan;

detect the contaminant on the display based on the one or more images;

identify a type of the contaminant on the display using the one or more images; and

perform a mitigation action to mitigate the contaminant based on the identification of the type of the contaminant including highlighting a contaminant area on the display, wherein the contaminant area contains the contaminant.

21 . The mobile device of claim 20 , wherein the at least one processor configured to scan the display comprises the at least one processor configured to:

use the ultrasonic scanner to scan the display.

22 . The mobile device of claim 21 , wherein the ultrasonic scanner is an ultrasonic full screen fingerprint sensor.

23 . The mobile device of claim 20 , wherein the at least one processor is further configured to:

receive an acknowledgement that the mitigation action is completed; and

rescan the display in a contaminant area to confirm the contaminant was mitigated.

24 . A mobile device configured to mitigate a contaminant on a display of the mobile device, comprising:

means for scanning the display;

means for generating one or more images of the contaminant based on the scanning;

means for detecting the contaminant on the display based on the one or more images;

means for identifying a type of the contaminant on the display using the one or more images; and

means for performing a mitigation action to mitigate the contaminant based on the identification of the type of the contaminant wherein the mitigation action includes highlighting a contaminant area on the display and the contaminant area contains the contaminant.

25 . The mobile device of claim 24 , wherein the means for scanning the display further comprises an ultrasonic scanner.

26 . The mobile device of claim 25 , wherein the ultrasonic scanner is an ultrasonic full screen fingerprint sensor.

27 . A non-transitory computer-readable medium storing computer-executable instructions configured to mitigate a contaminant on a display of a mobile device that, when executed by the mobile device, cause the mobile device to:

scan the display;

generate one or more images of the contaminant based on the scanning;

detect the contaminant on the display based on the one or more images;

identify a type of the contaminant on the display using the one or more images; and

perform a mitigation action to mitigate the contaminant based on the identification of the type of the contaminant including highlighting a contaminant area on the display,

wherein the contaminant area contains the contaminant.

28 . The non-transitory computer-readable medium of claim 27 , wherein the computer-executable instructions that, when executed by the mobile device, cause the mobile device to scan the display comprise computer-executable instructions that, when executed by the mobile device, cause the mobile device to:

use an ultrasonic scanner to scan the display.

29 . The non-transitory computer-readable medium of claim 28 , wherein the ultrasonic scanner is an ultrasonic full screen fingerprint sensor.