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Fingerprint identification device and mobile terminal

A fingerprint identification and fingerprint technology, applied in the field of fingerprint identification, can solve the problems of reducing the security of mobile terminals, cracking, and the inability to judge fake fingerprints, etc., and achieve the effects of reducing the risk of fake fingerprint cracking, low cost, and simple structure

Active Publication Date: 2017-05-24
SHENZHEN GOODIX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing fingerprint identification device can only compare the collected fingerprint information with the pre-stored fingerprint information to judge whether the two match, but cannot judge whether it is a real fingerprint or a fake fingerprint. The fingerprint identification device has the risk of being cracked by counterfeit fake fingerprints, thereby reducing the security of mobile terminals

Method used

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  • Fingerprint identification device and mobile terminal
  • Fingerprint identification device and mobile terminal
  • Fingerprint identification device and mobile terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Such as image 3 As shown, in this embodiment, the optical circuit module 220, the photoelectric converter 230 and the fingerprint sensor 100 are integrated into one chip, which is called the fingerprint chip 11; the light emitter 210 is an independent device, which can be single or multiple. The fingerprint chip 11 can be packaged together with the light emitter 210 to form a fingerprint encapsulation sheet; or, the fingerprint chip 11 is packaged separately to form a fingerprint encapsulation sheet, and the light emitter 210 is placed outside the fingerprint encapsulation sheet.

[0087] Such as Figure 4 , Figure 5 Shown is the first scheme of this embodiment, wherein, Figure 4 main view, Figure 5 for Figure 4 The sectional view of A-A in the middle (subsequent sectional views are all sectional views along A-A, for the sake of simplification, they are not marked one by one in the figure). This scheme is that the fingerprint chip 11 and the light emitter 210 ...

Embodiment 2

[0100] Such as Figure 25 As shown, in this embodiment, the optical circuit module 220 and the fingerprint sensor 100 are integrated into one chip, which is called the fingerprint chip 11; the light emitter 210 and the photoelectric converter 230 are independent devices. The fingerprint chip 11 can be packaged together with the light emitter 210 and the photoelectric converter 230 to form the fingerprint encapsulation sheet 10. The structural layout of this integrated mode is similar to the situation of the first solution in Embodiment 1, and will not be described in detail here; The chip 11 can also be packaged together with the photoelectric converter 230 to form the fingerprint encapsulation sheet 10, and the light emitter 210 is placed outside the fingerprint encapsulation sheet 10. The structural layout of this integration mode is similar to the situation of the second solution in the first embodiment , will not be repeated here; the fingerprint chip 11 can also constitut...

Embodiment 3

[0105] Such as Figure 34 As shown, in this embodiment, the fingerprint sensor 100 is independently integrated into a chip, which is the fingerprint chip 11, and the optical circuit module 220 is electrically connected to the fingerprint sensor 100 through a data interface, such as a serial peripheral interface (Serial Peripheral Interface) , SPI for short) interface, I2C (Inter-Integrated Circuit) bus interface, Universal Asynchronous Receiver / Transmitter (UART for short) interface, Universal Serial Bus (Universal Serial Bus, USB for short) interface, etc. Any two or three of the light emitter 210, the photoelectric converter 230, and the optical circuit module 220 can be combined into an integrated chip or an overall package, or can be a single independent device.

[0106] Such as Figure 35 As shown, the fingerprint chip 11 is individually packaged into a fingerprint package 10, and the optical circuit module 220, photoelectric converter 230, and light emitter 210 are inte...

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Abstract

The invention discloses a fingerprint identification device and a mobile terminal. The fingerprint identification device comprises a fingerprint sensor and an optical module which is electrically connected with the fingerprint sensor, wherein the optical module comprises a optical transmitter, an optical circuit module and a photoelectric converter, and the optical circuit module is electrically connected with the optical transmitter and the photoelectric converter; the optical transmitter is used for emitting an optical signal with a special wavelength; the photoelectric converter is used for receiving the optical signal emitted by the optical transmitter and under the action of a touch control object, and converting the optical signal into an electrical signal; and the optical circuit module is used for driving and controlling the optical transmitter, and analyzing and processing the electrical signal. When a finger touches the fingerprint sensor, the action can also be applied to the optical transmitter and the photoelectric converter of the optical module, thus a fingerprint signal and an optical signal of the finger can be acquired simultaneously, thereby being capable of judging whether the fingerprint is a fingerprint of a real finger, reducing the risk that the fingerprint identification device is cracked by a counterfeit fingerprint, and improving safety.

Description

technical field [0001] The invention relates to the technical field of fingerprint identification, in particular to a fingerprint identification device and a mobile terminal. Background technique [0002] With the increasing intelligence of mobile terminals, the functions of mobile terminals are becoming more and more abundant. People can use social software to publish and share information, take photos, browse the web, and make online payments on mobile terminals. , so that more and more private information and sensitive information of users are saved on the mobile terminal, and the security of the mobile terminal has gradually become an important issue that people pay attention to. [0003] In view of the uniqueness of fingerprints as an important biological feature of the human body, fingerprint recognition devices have been widely used in mobile terminals, mainly for functions such as terminal unlocking, file encryption and decryption, and secure payment. However, the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/1394G06V40/1318G06V40/45H04W12/06H01L25/16G06V40/1365G06F21/32G06F2221/2133
Inventor 杨旺旺何毅王玉栋
Owner SHENZHEN GOODIX TECH CO LTD
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