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Biological characteristic sensing device

A sensing device and biometric technology, applied in the direction of time indicating mechanical devices, clocks, instruments, etc., can solve the problems of affecting the recognition results and difficult to identify fake fingers.

Pending Publication Date: 2021-11-02
EGIS TECH
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  • Description
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AI Technical Summary

Problems solved by technology

The current counterfeiting technology is becoming more and more sophisticated. For example, a mold can be made by using 2D images or 3D printing, and then filled with various silica gel and pigments to make fake fingers, or another person’s fingerprint can be copied A transparent or skin-colored film is attached to the surface of the finger, making it difficult to identify the fake finger with the transparent film attached
This kind of fake finger recognition technology needs special attention when sensing fingerprints under the screen, because the display screen may cover some of the features of the finger and affect the recognition result

Method used

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  • Biological characteristic sensing device
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Embodiment Construction

[0050] The present invention mainly utilizes the defect light field to perform biometric sensing. The defect light field is provided by the first area and the second area of ​​the light-emitting module, wherein the wavelength of light in the first area is different from the wavelength of light in the second area. Or the first area emits light while the second area does not emit light, that is, the first area emits specific light while the second area does not emit specific light. Using the different situations of scattering, reflection, absorption and / or conduction produced by the defect light field on different objects, the spectral properties of the object can be obtained through the interaction between the material of the object and the reflection, scattering, absorption and / or conduction of the spectrum , and even further judge the authenticity of the object. Cooperate with the control of the area that emits specific light and the area that does not emit specific light to ...

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Abstract

A biological characteristic sensing device at least comprises a digital light-emitting module which comprises a first area and a second area, and the first area emits incident light; and the sensing module is arranged below the digital light-emitting module, in a first mode, the second area does not emit light with the same wavelength as the incident light, so that the digital light-emitting module provides a defect light field to irradiate an object above the digital light-emitting module, and the object responds to light generated by the defect light field and is received by the sensing module.

Description

technical field [0001] The present invention relates to a biometric sensing device, and more particularly to a device for performing biometric sensing using a defect light field. Background technique [0002] Today's mobile electronic devices (such as mobile phones, tablet computers, laptops, etc.) are usually equipped with user biometric systems, including different technologies such as fingerprints, faces, irises, etc., to protect personal data security. Portable devices such as mobile phones or smart watches also have the function of mobile payment, and biometric identification for users has become a standard function, and the development of portable devices such as mobile phones is moving towards full-screen (or super The trend of narrow bezels) has made traditional capacitive fingerprint buttons no longer usable, and new miniaturized optical imaging devices have evolved (some are very similar to traditional camera modules, with complementary metal-oxide semiconductor (C...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG04B19/30G06V40/1318G06V40/1382H10K59/40G06V40/1365G06V40/145H10K59/60G06V40/1324H10K59/65
Inventor 周正三林冠仪傅同龙
Owner EGIS TECH
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