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Optical fingerprint sensor module

A fingerprint sensor, optical technology, applied in instruments, character and pattern recognition, computer parts and other directions, can solve problems such as performance needs to be improved, and achieve the effects of simple structure, reduced cost and reduced thickness

Inactive Publication Date: 2018-01-16
SHANGHAI OXI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The structure of the existing optical fingerprint sensor module needs to be improved, and the performance needs to be improved

Method used

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Embodiment Construction

[0038] An existing optical fingerprint sensor generally needs to include a light-transmitting substrate and a protective layer. This structure inevitably results in a larger thickness of the entire optical fingerprint sensor. The larger thickness also causes the light emitted by the light source to go through a longer optical path before reaching the photosensitive element, resulting in that the quality of the collected fingerprint image cannot be further improved.

[0039] Therefore, the present invention provides a new optical fingerprint sensor module. By simplifying the structure of the optical fingerprint sensor and omitting the protective layer, not only the thickness of the optical fingerprint sensor module is reduced, but also the quality of the formed fingerprint image is improved.

[0040]In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail b...

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Abstract

The invention discloses an optical fingerprint sensor module, comprising an optical fingerprint sensor and a planar backlight source, wherein the optical fingerprint sensor is provided with only one transparent substrate; the first surface of the transparent substrate is used for direct contact by a finger fingerprint; the second surface of the transparent substrate is provided with a device layer; the device layer is provided with a pixel area; the pixel area is provided with multiple pixels; each pixel comprises a transparent area and a non-transparent area; the non-transparent area is equipped with a photosensitive element; the transparent area enables light to pass through the pixel area of the device layer; the planar backlight source is located below the device layer; and emergent light of the planar backlight source passes through the device layer from the transparent area and then enters the transparent substrate. The structure of the optical fingerprint sensor module is simplified, and the performance is improved.

Description

technical field [0001] The invention relates to the field of optical fingerprint identification, in particular to an optical fingerprint sensor module. Background technique [0002] Fingerprint imaging recognition technology is to collect the fingerprint image of the human body through the optical fingerprint sensor, and then compare it with the existing fingerprint imaging information in the system to judge whether it is correct or not, and then realize the technology of identity recognition. Due to its ease of use and the uniqueness of human fingerprints, fingerprint imaging recognition technology has been widely used in various fields. For example, security inspection areas such as public security bureaus and customs, building access control systems, and consumer products such as personal computers and mobile phones, etc. The realization of fingerprint imaging recognition technology includes optical imaging, capacitive imaging, ultrasonic imaging and other technologies. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/1318
Inventor 凌严朱虹
Owner SHANGHAI OXI TECH
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