Supercharge Your Innovation With Domain-Expert AI Agents!

Ultrasonic transducer device, acoustic biometric imaging system and manufacturing method

An ultrasonic transducer, biometric identification technology, applied in piezoelectric/electrostrictive transducer, piezoelectric/electrostrictive device manufacturing/assembly, character and pattern recognition, etc., to achieve the effect of improving acoustic coupling

Pending Publication Date: 2020-05-05
FINGERPRINT CARDS ANACATUM IP AB
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the general principles of such ultrasonic fingerprint sensing are known, there still appear to be challenges to overcome

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ultrasonic transducer device, acoustic biometric imaging system and manufacturing method
  • Ultrasonic transducer device, acoustic biometric imaging system and manufacturing method
  • Ultrasonic transducer device, acoustic biometric imaging system and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] In this detailed description, various embodiments of an ultrasonic transducer device according to the present invention are described mainly with reference to an ultrasonic transducer device comprising a first piezoelectric element and a second piezoelectric element. Both piezoelectric elements have a first transducer electrode and a second transducer electrode, both of which can be connected from one side of the ultrasonic transducer device. It should be noted that ultrasound transducer arrangements having many other configurations also fall within the scope defined by the claims. For example, an ultrasound transducer arrangement may include fewer or more piezoelectric elements, and / or may additionally include one or more sensors for driving the piezoelectric elements and / or sensing electrical signals provided by the piezoelectric elements. integrated circuit. Furthermore, the first transducer electrode and the second transducer electrode may be connected from differe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An ultrasonic transducer device for use in an acoustic biometric imaging system, the ultrasonic transducer device comprising: a first piezoelectric element having a first face, a second face oppositethe first face, and side edges extending between the first face and the second face; a first transducer electrode on the first face of the first piezoelectric element; a second transducer electrode onthe second face of the first piezoelectric element; and a spacer structure leaving at least a portion of the first transducer electrode of the first piezoelectric element uncovered.

Description

technical field [0001] The present invention relates to an ultrasound transducer arrangement for use in an acoustic biometric imaging system, and a method of manufacturing such an ultrasound transducer arrangement. Background technique [0002] Biometric systems are widely used as a means for increasing the convenience and security of personal electronic devices such as mobile phones and the like. In particular, fingerprint sensing systems are now included in most of all newly released personal communication devices, such as mobile phones. [0003] Capacitive fingerprint sensors are used in the vast majority of biometric systems due to their excellent performance and relatively low cost. [0004] Among other fingerprint sensing technologies, ultrasonic sensing also has the potential to provide beneficial performance, such as the ability to acquire fingerprint (or palm) images from very wet fingers and the like. [0005] One class of ultrasonic fingerprint systems of partic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00B06B1/06G06F3/043H01L41/25H04R17/00G06V40/13G06V40/20
CPCB06B1/0622B06B2201/20G06V40/1306G06V40/28H10N30/01H10N30/03H10N30/05H10N30/50H10N30/302H10N30/853H10N30/872
Inventor 卡尔·伦达尔
Owner FINGERPRINT CARDS ANACATUM IP AB
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com