Fingerprint imaging modules and electronic device

An imaging module and fingerprint technology, which is applied in the direction of acquiring/arranging fingerprints/palmprints, printing image collection, character and pattern recognition, etc., can solve the problems of inability to obtain fingerprint images, poor quality of fingerprint images, etc.

Inactive Publication Date: 2018-12-18
SHANGHAI OXI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the fingerprint imaging module of the prior art can only collect fingerprint images under suitable lighting conditions. When the ambient light is too strong, the quality of the fingerprint image obtained by the existing fingerprint imaging module is poor, and even the fingerprint image cannot be obtained.

Method used

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  • Fingerprint imaging modules and electronic device
  • Fingerprint imaging modules and electronic device
  • Fingerprint imaging modules and electronic device

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Embodiment Construction

[0037] It can be seen from the background art that the fingerprint imaging module in the prior art has the problem that the quality of the fingerprint image obtained under the condition of strong ambient light is poor, or even the fingerprint image cannot be obtained. The reason for the problem with the structure of a fingerprint imaging module is now:

[0038] refer to figure 1 , shows a schematic cross-sectional structure of a fingerprint imaging module.

[0039] like figure 1 As shown, the fingerprint imaging module includes: a light source 11 for generating incident light 14; a sensing surface 13 for accepting the touch of a finger 10, and the incident light 14 is formed on the sensing surface 13 to carry The reflected light 15 of the fingerprint information; the image sensor 12 , collecting the reflected light 15 and obtaining a fingerprint image according to the reflected light 15 .

[0040] When the finger 10 is pressed against the sensing surface 13, part of the inc...

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Abstract

A fingerprint imaging module and an electronic device are provided, wherein the fingerprint imaging module comprising a light source; a sensing surface that is in contact with the part to be imaged and causes incident light generated by the light source to form reflected light carrying fingerprint information, wherein ambient light transmits the object to be imaged to form interference light; an image sensor that photoelectrically converts the interference light and the reflected light, and obtains a fingerprint image according to the reflected light; a light filter layer is locate between thesensing surface and the image sensor for filtering at least a portion of the interference light. The arrangement of the filter layer can give consideration to the improvement of the integration leveland the signal-to-noise ratio, and can effectively improve the performance of the fingerprint imaging module.

Description

technical field [0001] The invention relates to the field of fingerprint imaging, in particular to a fingerprint imaging module and electronic equipment. Background technique [0002] Fingerprint recognition technology collects the fingerprint image of the human body through the fingerprint imaging sensor, and then compares it with the existing fingerprint imaging information in the fingerprint recognition system to realize identity recognition. Due to the convenience of use and the uniqueness of human fingerprints, fingerprint recognition technology has been widely used in various fields, such as: public security bureaus, customs and other security inspection fields, building access control systems, and consumer products such as personal computers and mobile phones, etc. [0003] The imaging methods of the imaging module used in the fingerprint identification technology include optical, capacitive, ultrasonic and other technologies. One of them is to collect the fingerprin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/1341G06V40/1318
Inventor 辛胜朱虹陆震生管钰晟
Owner SHANGHAI OXI TECH
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