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Optical fingerprint sensor module

Inactive Publication Date: 2016-05-04
SHANGHAI OXI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 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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  • Optical fingerprint sensor module
  • Optical fingerprint sensor module
  • Optical fingerprint sensor module

Examples

Experimental program
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Embodiment Construction

[0060] In an existing optical fingerprint sensor, such as figure 2 and image 3 The structure shown, where figure 2 is the top view of the optical fingerprint sensor, image 3 for figure 2 Optical fingerprint sensor shown along figure 2 The cross-sectional schematic diagram obtained by cutting A-A dot-dash line. The optical fingerprint sensor includes a glass substrate 220 , and a pixel array area 231 and peripheral circuits on the glass substrate 220 . The peripheral circuit area includes a driving circuit 234 , a signal readout chip 232 and a flexible printed circuit board 233 . The pixel array area 231 includes a pixel array for receiving, converting and temporarily storing optical signals. Described peripheral circuit area also comprises flexible printed circuit board binding area 233A, the connection line between the binding area of ​​pixel array area 231, signal readout chip 232 and the binding area of ​​flexible printed circuit board 233 (each connection line ...

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Abstract

The invention discloses an optical fingerprint sensor module, comprising a protection layer and an optical fingerprint sensor located under the protection layer; the optical fingerprint sensor is equipped with a light transmitting substrate and an instruction layer; the instrument layer is equipped with multiple pixels; every pixel is equipped with a light transmitting region and a light proof region; the light proof region is equipped with a sensing element; the light transmitting region enables the lights to transmit the instrument layer; a backlight source is located under the optical fingerprint sensor; the instrument layer is located between the backlight source and the light transmitting substrate; or the light transmitting substrate is located between the backlight source and the instrument layer; at least one of a light condensing layer and a light straightening layer is arranged between the optical fingerprint sensor and the backlight source; the angle range of the transmitted lights is reduced by the light condensing layer and the light straightening layer. The definition of the fingerprint image formed by the optical fingerprint sensor module 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
CPCG06V40/1324G06V40/1318
Inventor 凌严朱虹胡世文
Owner SHANGHAI OXI TECH
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