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Ultrasonic fingerprint identification module, device and electronic equipment

A fingerprint recognition module, ultrasonic technology, applied in character and pattern recognition, instruments, computer parts and other directions, can solve the problems of inability to parse fingerprint images, complex structure of ultrasonic fingerprint recognition modules, etc., to improve popularization and application, simple structure , the effect of reducing costs

Active Publication Date: 2021-05-07
成都大超科技有限公司
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The current mainstream fingerprint recognition technologies include optical fingerprint recognition, capacitive fingerprint recognition and ultrasonic fingerprint recognition, but they also have their own shortcomings, such as optical fingerprint recognition and capacitive fingerprint recognition. Unable to analyze fingerprint images; while ultrasonic fingerprint recognition has less requirements for the application environment, so ultrasonic fingerprint recognition is widely used in some fields
[0003] However, the structures of the existing ultrasonic fingerprint recognition modules are very complicated.

Method used

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  • Ultrasonic fingerprint identification module, device and electronic equipment
  • Ultrasonic fingerprint identification module, device and electronic equipment
  • Ultrasonic fingerprint identification module, device and electronic equipment

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] Please refer to figure 1 , the present invention provides an ultrasonic fingerprint identification device 10, the ultrasonic fingerprint identification device 10 includes an ultrasonic fingerprint identification module 10a, a display module 16 and an adhesive layer 14, one of the surfaces of the display module 16 is for the user to The touch surface 165 for operation, the touch surface 165 is also a display surface, and the other surface opposite to the touch surface 165 is provided with an adhesive layer 14, and the adhesive layer 14 is bonded with the ultrasonic fingerprin...

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Abstract

The invention relates to the technical field of fingerprint identification, in particular to an ultrasonic fingerprint identification module, a device and an electronic device. The ultrasonic fingerprint recognition module includes a fingerprint touch recognition module, the fingerprint touch recognition module includes a touch recognition area and a fingerprint touch recognition area, and the recognition accuracy of the fingerprint touch recognition area is greater than that of the touch recognition area. The fingerprint touch recognition module includes an upper electrode layer, a piezoelectric layer and a lower electrode layer arranged in layers, and the upper electrode layer and the lower electrode layer are respectively arranged on two opposite surfaces of the piezoelectric layer. The identification accuracy of the upper electrode layer corresponding to the touch identification area is greater than the identification accuracy of the upper electrode layer corresponding to the touch identification area, and / or the identification accuracy of the lower electrode layer corresponding to the fingerprint touch identification area is greater than that of the touch identification area. The recognition accuracy of the lower electrode layer. The ultrasonic fingerprint identification module, device and electronic device of the present invention have the advantages of simple structure.

Description

【Technical field】 [0001] The invention relates to the technical field of fingerprint identification, in particular to an ultrasonic fingerprint identification module, device and electronic equipment. 【Background technique】 [0002] At present, fingerprint recognition technology has been widely used in many fields such as mobile terminals, smart homes, and crime fighting. It brings a lot of convenience and safety to people's life. The current mainstream fingerprint recognition technologies include optical fingerprint recognition, capacitive fingerprint recognition and ultrasonic fingerprint recognition, but they also have their own shortcomings, such as optical fingerprint recognition and capacitive fingerprint recognition. Fingerprint images cannot be parsed; and ultrasonic fingerprint recognition does not have such high requirements for the application environment, so ultrasonic fingerprint recognition is widely used in some fields. [0003] However, the structures of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06F3/041
Inventor 吴露向勇王开安高奇文
Owner 成都大超科技有限公司
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