Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Fingerprint Sensors and Electronics

A technology of fingerprint sensor and electronic equipment, which is applied in the direction of acquiring/organizing fingerprints/palmprints, instruments, time registers, etc., and can solve problems such as damage to fingerprint sensor components.

Active Publication Date: 2018-10-02
柳州梓博科技有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a human-machine interface, the fingerprint sensor needs to be in contact with the human finger and the outside world. Electrostatic discharge (ESD) will directly enter the fingerprint sensor, which may easily cause damage to the internal components of the fingerprint sensor.

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
  • Fingerprint Sensors and Electronics
  • Fingerprint Sensors and Electronics
  • Fingerprint Sensors and Electronics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of said features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0027] In the descr...

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

The invention discloses a fingerprint sensor and electronic equipment. A fingerprint sensor includes a plurality of sensing electrodes, a protective layer and a plurality of operational amplifiers. The protective layer is on the same layer as the plurality of sensing electrodes, the protective layer is arranged around each sensing electrode, and the protective layer is connected to a reference ground, which is used to load a changing reference signal. Each operational amplifier includes an amplifier and a feedback branch; the amplifier includes a non-inverting terminal, an inverting terminal and an output terminal, the inverting terminal is connected to a corresponding sensing electrode, the feedback branch is connected between the inverting terminal and the output terminal, and the non-inverting terminal Connect the reference ground directly or indirectly so that the voltage difference between the multiple sensing electrodes and the shield remains constant. In the above fingerprint sensor, when electrostatic discharge occurs on the surface of the fingerprint sensor, the electrostatic energy can be released to the reference ground through the protective layer, which can improve the anti-ESD capability of the fingerprint sensor. The voltage difference between the sensing electrode and the reference ground remains constant, which will not affect the sensitivity of the fingerprint sensor.

Description

technical field [0001] The invention relates to the field of fingerprint identification, and more specifically, to a fingerprint sensor and electronic equipment. Background technique [0002] In related technologies, with the popularization of fingerprint sensors in smart mobile terminals, the demand for fingerprint sensors is increasing. As a human-machine interface, the fingerprint sensor needs to be in contact with human fingers and the outside world. Electrostatic discharge (ESD) will directly enter the fingerprint sensor, which may easily cause damage to the internal components of the fingerprint sensor. Contents of the invention [0003] The embodiments of the present invention aim to solve at least one of the technical problems in the prior art. Therefore, the embodiment of the present invention needs to provide a fingerprint sensor and an electronic device. [0004] A fingerprint sensor includes a plurality of sensing electrodes, a protective layer and a pluralit...

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 Patents(China)
IPC IPC(8): G06K9/00G06F21/32G07C9/00
CPCG06F21/32G07C9/257G07C9/37G06V40/1306G06F18/00
Inventor 王小明
Owner 柳州梓博科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com