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Under-display optical sensor with compensated light paths

A display and optical sensing technology, applied in the field of optical sensors, can solve cumbersome problems

Pending Publication Date: 2021-05-18
SHENZHEN GOODIX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These processes can be cumbersome for the user and have various practical limitations and inconveniences

Method used

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  • Under-display optical sensor with compensated light paths
  • Under-display optical sensor with compensated light paths
  • Under-display optical sensor with compensated light paths

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Embodiment Construction

[0033] In the following description, numerous specific details are provided in order to provide a thorough understanding of the present invention. However, it will be understood by those skilled in the art that the present invention may be practiced without one or more of these details. In other instances, features and techniques known in the art have not been described in detail for the sake of brevity.

[0034] An electronic device or system can be equipped with a fingerprint authentication mechanism to improve the security of access to the device. Such electronic devices or systems can include portable or mobile computing devices, such as smartphones, tablets, wrist-worn devices, and other wearable or portable devices, as well as larger electronic devices or systems, such as portable or desktop personal computers , ATM, various terminals for commercial or government purposes to various electronic systems, databases or information systems, and motor transportation systems i...

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Abstract

Optical sensing is provided with compensated light paths. For example, embodiments can operate in context of an under-display optical fingerprint sensor (181) integrated into an electronic device (200), such as a smart phone. Responsive to reflected probe light passing through a display module (433), a compensation structure (2155) is configured to compensate for divergent refracting of the reflected probe light caused by backlighting enhancement structures. Some embodiments operate in context of an enhancement panel (2000) having micro-prism structures (2105) that tend to blur the reflected probe light. In such context, embodiments are configured to provide one or more compensation film layers (2150) to compensate for optical effects of the enhancement panel (2000), thereby mitigating blurring and / or other undesirable optical conditions.

Description

[0001] Cross References to Related Applications [0002] This patent document claims the priority and benefit of the prior U.S. Provisional Patent Application No. 62 / 903,672 filed on September 20, 2019 by the applicant Shenzhen Goodix Technology Co., Ltd., and the applicant Shenzhen Goodix Technology Co., Ltd. Interest in Prior U.S. Provisional Patent Application No. 62 / 907,418, filed September 27, 2019, by Incorporated. technical field [0003] The present disclosure relates to optical sensors, such as under-display optical fingerprint sensors, integrated with a display panel arrangement of a mobile computing device and used to provide under-display optical sensing with compensating optical paths. Background technique [0004] Various sensors can be implemented in an electronic device or system to provide certain desired functionality. Sensors that enable user authentication are an example of sensors in a variety of devices and systems to protect personal data and prevent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/1324
Inventor 何毅皮波
Owner SHENZHEN GOODIX TECH CO LTD