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Fingerprint imaging module and its forming method, motherboard of fingerprint imaging module, electronic equipment

An imaging module and fingerprint technology, which is applied in the directions of acquiring/organizing fingerprints/palmprints, printing image collection, character and pattern recognition, etc., can solve the problems affecting the performance, imaging quality and module integration of optical fingerprint imaging modules. Taking into account other issues to achieve the effect of improving the uniformity of incident light, reducing the thickness, and reducing the thickness of the module

Active Publication Date: 2022-03-22
SHANGHAI OXI TECH
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in existing optical fingerprint imaging modules, it is often difficult to balance the imaging quality and module integration, which affects the performance of optical fingerprint imaging modules.

Method used

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  • Fingerprint imaging module and its forming method, motherboard of fingerprint imaging module, electronic equipment
  • Fingerprint imaging module and its forming method, motherboard of fingerprint imaging module, electronic equipment
  • Fingerprint imaging module and its forming method, motherboard of fingerprint imaging module, electronic equipment

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Experimental program
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Embodiment Construction

[0042] It can be seen from the background art that the fingerprint imaging module in the prior art has the problem that it is often difficult to balance the imaging quality and the integration degree of the module. The reason is analyzed in combination with the structure of the existing fingerprint imaging module.

[0043] refer tofigure 1 , shows a schematic cross-sectional structure of a fingerprint imaging module.

[0044] Such as figure 1 As shown, the fingerprint imaging module is an ultra-thin optical fingerprint imaging module. The fingerprint imaging module realizes fingerprint imaging through the principle of photoelectric conversion, including: a light source, an optical area sensor 12 located on the light source, and a sensing surface 13 located on the optical area sensor 12 .

[0045] When collecting fingerprints, the finger is pressed on the sensing surface 13; the incident light produced by the light source is projected onto the sensing surface 13, and reflecti...

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Abstract

A fingerprint imaging module and a method for forming the same, a fingerprint imaging module motherboard, and an electronic device, wherein the fingerprint imaging module comprises: a substrate; a light-emitting structure layer, wherein the light-emitting structure layer is located on one surface of the substrate; a pixel array, The pixel array is located on the light-emitting structure layer; the light generated by the light-emitting structure layer forms sensing light carrying fingerprint information on the sensing surface after transmitting the pixel array, and the pixel array collects the Sensing face to obtain fingerprint image. By stacking the light-emitting structure layer and the pixel array on the same surface of the substrate in sequence, a light source for generating light and a base layer for an image sensor for collecting and sensing light are realized, which not only shortens the light path for obtaining the fingerprint image light , and reduce the thickness of the fingerprint imaging module, so as to achieve the purpose of improving the integration of the device and improving the imaging quality.

Description

technical field [0001] The invention relates to the field of fingerprint imaging, in particular to a fingerprint imaging module and its forming method, a motherboard of the fingerprint imaging module, and electronic equipment. Background technique [0002] The fingerprint identification technology collects the fingerprint image of the human body through the fingerprint imaging module, and then compares it with the existing fingerprint imaging information in the fingerprint identification system to realize identity identification. 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, ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06V40/13G06V10/147
CPCG06V40/1318G06V10/147
Inventor 辛胜朱虹陆震生管钰晟
Owner SHANGHAI OXI TECH
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