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An under-display optical fingerprint sensor based on lens-pinhole imaging using off-axis pinholes

A fingerprint sensor and optical technology, which can be used in the acquisition/organization of fingerprints/palmprints, instruments, and print image acquisition, etc., and can solve cumbersome problems.

Active Publication Date: 2021-01-01
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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  • An under-display optical fingerprint sensor based on lens-pinhole imaging using off-axis pinholes
  • An under-display optical fingerprint sensor based on lens-pinhole imaging using off-axis pinholes
  • An under-display optical fingerprint sensor based on lens-pinhole imaging using off-axis pinholes

Examples

Experimental program
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Embodiment Construction

[0033] An electronic device or system can be equipped with a fingerprint authentication mechanism to increase 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, ATMs, various terminals to various electronic systems, databases, or information systems for commercial or government purposes, including motor transportation systems such as automobiles, ships, trains, airplanes, and others.

[0034] Fingerprint sensing is useful in mobile applications and other applications that use or require secure access. For example, fingerprint sensing can be used to provide secure access to mobile devices and secure financial transactions including online shopping. It is desirable to include robust and reliable fingerprint sensing for mobi...

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Abstract

An optical fingerprint sensor module (4620, 6000), comprising: a light source (6009) for providing illumination light (6620) directed to a finger (6610), a portion of the illumination light (6620) being scattered by the finger (6610) or Reflected, thereby generating signal light (6640, 6650). The optical fingerprint sensor module (4620, 6000) also includes a photodiode array (4623e) having a surface; a lens (4621e) having an optical axis normal to the surface of the photodiode array (4623e) a wire forming an angle between 45 degrees and 135 degrees; and a member defining a pinhole (4621g), said pinhole (4621g) being located outside the optical axis of said lens (4621e). The lens (4621e) and the pinhole (4621g) are used to focus the signal light (6640, 6650) onto the surface of the photodiode array (4623e). The optical fingerprint sensor module (4620) also includes electronic circuitry (435) electrically coupled to the photodiode array, the electronic circuitry (435) for processing electrical signals generated by the photodiode array (4623e) to generate An image of the fingerprint pattern of the finger (6610).

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application No. 62 / 703,432, filed July 25, 2018, which is hereby incorporated by reference in its entirety. technical field [0003] The present disclosure relates to the sensing of fingerprints and one or more sensing operations to perform other parameter measurements in electronic devices or systems, including portable computing devices such as mobile devices, wearable devices, and larger systems. 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 unauthorized access, including portable or mobile computing devices (e.g., laptops, tablets, smartphones), Game systems, various databases, information systems or larger computer control s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
CPCG06V40/1318
Inventor 何毅皮波
Owner SHENZHEN GOODIX TECH CO LTD