CN112699767A - Anti-counterfeiting optical fingerprint chip integrating multispectral and hyperspectral films - Google Patents
Anti-counterfeiting optical fingerprint chip integrating multispectral and hyperspectral films Download PDFInfo
- Publication number
- CN112699767A CN112699767A CN202011559392.7A CN202011559392A CN112699767A CN 112699767 A CN112699767 A CN 112699767A CN 202011559392 A CN202011559392 A CN 202011559392A CN 112699767 A CN112699767 A CN 112699767A
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- China
- Prior art keywords
- hyperspectral
- multispectral
- optical fingerprint
- film
- fingerprint chip
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/145—Illumination specially adapted for pattern recognition, e.g. using gratings
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/147—Details of sensors, e.g. sensor lenses
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/1382—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger
- G06V40/1394—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger using acquisition arrangements
Abstract
The invention discloses an anti-counterfeiting optical fingerprint chip integrating multispectral and hyperspectral films, which comprises a sensor array, wherein the surface of the sensor array is provided with the multispectral or hyperspectral films; the multispectral or hyperspectral film is in a hole shape, a grating shape or a thickness change shape. The intensity of reflected light with different wavelengths can be identified through the principles of small hole imaging, grating or film effect and the like, the process processing difficulty is low, the cost is saved, the identification accuracy is high, and the space required by a chip is saved.
Description
Technical Field
The invention relates to a fingerprint detection technology, in particular to an anti-counterfeiting optical fingerprint chip integrating multispectral and hyperspectral films.
Background
Hemoglobin in human blood selectively absorbs light of different wavelengths.
As shown in fig. 1, hemoglobin has weak absorption of 560nm light, and human skin has a specific spectral absorption curve, so that the authenticity of the living fingerprint can be verified through the characteristic.
In the prior art, as shown in fig. 2, a conventional optical fingerprint identification chip verifies the authenticity of a living fingerprint through a color-filter (color coating) of a Bayer model. Or the authenticity of the living fingerprint is verified by emitting light rays with different wavelengths by an additional light source.
The defects of the prior art are as follows:
the process has high processing difficulty, high cost and low identification accuracy.
Disclosure of Invention
The invention aims to provide an anti-counterfeiting optical fingerprint chip integrating multispectral and hyperspectral films.
The purpose of the invention is realized by the following technical scheme:
the anti-counterfeiting optical fingerprint chip integrating the multispectral and hyperspectral films comprises a sensor array, wherein the multispectral or hyperspectral films are arranged on the surface of the sensor array;
the multispectral or hyperspectral film is in a hole shape, a grating shape or a thickness change shape.
According to the technical scheme provided by the invention, the anti-counterfeiting optical fingerprint chip integrated with the multispectral and hyperspectral films provided by the embodiment of the invention can identify the intensities of reflected lights with different wavelengths through principles such as pinhole imaging, grating or thin-film effect and the like, is low in process processing difficulty, saves cost, is high in identification accuracy, and saves the space required by the chip.
Drawings
FIG. 1 is a graph showing a prior art hemoglobin vs. light absorption curve.
Fig. 2 is a schematic structural diagram of a Bayer pattern in the prior art.
Fig. 3 is a schematic structural diagram of an anti-counterfeiting optical fingerprint chip integrated with a multispectral and hyperspectral film according to an embodiment of the invention.
Fig. 4 to 6 are schematic structural diagrams of embodiments of the present invention, respectively.
Fig. 6a to 6b are schematic plan views of the multispectral or hyperspectral films of fig. 6, respectively.
In the figure:
1. sensor array, 2, color coating, 3, multispectral or hyperspectral film.
Detailed Description
The embodiments of the present invention will be described in further detail below. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
The invention discloses an anti-counterfeiting optical fingerprint chip integrating multispectral and hyperspectral films, which has the preferred specific implementation modes that:
the sensor array is provided with a multispectral or hyperspectral film on the surface;
the multispectral or hyperspectral film is in a hole shape, a grating shape or a thickness change shape.
The hole-shaped and grating-shaped features comprise any one or combination of a circular hole, a long hole, an elliptical hole and a polygonal hole.
The multispectral or hyperspectral film is made of an organic material, a semiconductor medium material or a metal material.
The multispectral or hyperspectral comprises infrared light, visible light and/or ultraviolet light.
The multispectral or hyperspectral film can realize at least one of the following effects:
pinhole imaging effects;
the grating effect;
and (4) thin film effect.
The chip is used for verifying the authenticity of the living fingerprint.
The multi-spectral anti-counterfeiting optical fingerprint chip (multi-spectral) integrated with the multispectral and hyperspectral films can identify the intensities of reflected light with different wavelengths through principles such as micropore imaging, grating or film effect and the like, and does not need color-filter (color coating) to realize living body anti-counterfeiting, so that a plurality of layers of color coatings required in the processing process of the optical fingerprint identification chip can be omitted, the processing difficulty of the process is reduced, and the cost is saved;
the optical fingerprint chip can be verified and counterfeit-proof through multispectral, and due to multispectral characteristics, the recognition accuracy is higher than that of a common optical fingerprint chip;
the multispectral identification can be realized only by the size of the optical sensor without an additional light source, the size of the fingerprint identification device is reduced, the space is saved, the cost and the volume are reduced, and the power consumption is low, so that the multispectral identification device can be used for daily consumer products;
because color-filter and extra light source are not needed, the thickness of the chip used for fingerprint identification can be reduced, and the space required by the chip is saved.
Specific embodiments, as shown in fig. 3 to 6 b:
a fingerprint identification chip integrated with a multispectral or hyperspectral film is used for anti-counterfeiting of the fingerprint identification chip.
Multispectral or hyperspectral includes infrared light, visible light, and ultraviolet light.
The specific use is not limited to all the wave bands of the hyperspectrum, and can be partial wave bands of the hyperspectrum.
The hyperspectral film comprises a porous, raster-shaped or thickness-variable organic material, a semiconductor dielectric material or a metal film.
The hole-shaped and grating-shaped characteristics of the hyperspectral film comprise a circular shape, an oval shape, a polygonal shape and a composite shape structure formed by combining the different shapes.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The anti-counterfeiting optical fingerprint chip is characterized by comprising a sensor array, wherein the surface of the sensor array is provided with a multispectral or hyperspectral film;
the multispectral or hyperspectral film is in a hole shape, a grating shape or a thickness change shape.
2. The anti-counterfeiting optical fingerprint chip integrating the multispectral and hyperspectral films according to claim 1, wherein the hole-shaped and grating-shaped features comprise any one or more of a combination of circular holes, elongated holes, elliptical holes and polygonal holes.
3. The anti-counterfeiting optical fingerprint chip integrating the multispectral and hyperspectral films according to claim 2, wherein the multispectral or hyperspectral films are made of organic materials, semiconductor dielectric materials or metal materials.
4. The integrated multispectral, hyperspectral film anti-counterfeiting optical fingerprint chip according to claim 3, wherein the multispectral or hyperspectral comprises infrared light, visible light and/or ultraviolet light.
5. The integrated multispectral, hyperspectral film anti-counterfeiting optical fingerprint chip according to any one of claims 1 to 4, wherein the multispectral or hyperspectral film can achieve at least one of the following effects:
pinhole imaging effects;
the grating effect;
and (4) thin film effect.
6. The integrated multispectral and hyperspectral film anti-counterfeiting optical fingerprint chip according to claim 5, wherein the chip is used for verifying the authenticity of a living fingerprint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011559392.7A CN112699767A (en) | 2020-12-25 | 2020-12-25 | Anti-counterfeiting optical fingerprint chip integrating multispectral and hyperspectral films |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011559392.7A CN112699767A (en) | 2020-12-25 | 2020-12-25 | Anti-counterfeiting optical fingerprint chip integrating multispectral and hyperspectral films |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112699767A true CN112699767A (en) | 2021-04-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011559392.7A Pending CN112699767A (en) | 2020-12-25 | 2020-12-25 | Anti-counterfeiting optical fingerprint chip integrating multispectral and hyperspectral films |
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| CN (1) | CN112699767A (en) |
Citations (10)
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| CN107331677A (en) * | 2017-07-19 | 2017-11-07 | 北京思比科微电子技术股份有限公司 | A kind of imaging sensor of multispectral imaging |
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| CN110383286A (en) * | 2019-05-22 | 2019-10-25 | 深圳市汇顶科技股份有限公司 | For the method for bio-identification, fingerprint identification device and electronic equipment |
| CN210894926U (en) * | 2019-11-06 | 2020-06-30 | 深圳市汇顶科技股份有限公司 | Reflective film, backlight module, liquid crystal display and fingerprint recognition device under screen |
| CN211044274U (en) * | 2020-02-28 | 2020-07-17 | 深圳市海谱纳米光学科技有限公司 | Fingerprint identification equipment and electronic equipment under screen |
| CN211553736U (en) * | 2019-12-04 | 2020-09-22 | 中国人民公安大学 | Hyperspectral detection device of fingerprint on plane carrier |
| US20200329205A1 (en) * | 2020-04-02 | 2020-10-15 | Sichuan Dualix Spectral Lmaging Technology Co., Ltd | Hyperspectral camera based on continuously variable film filter and coating method thereof |
| CN111814727A (en) * | 2020-07-22 | 2020-10-23 | 吉林大学 | Hyperspectrum-based potential fingerprint detection method |
-
2020
- 2020-12-25 CN CN202011559392.7A patent/CN112699767A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445427A (en) * | 2011-10-11 | 2012-05-09 | 孔令华 | Micro multi-spectral narrow-band remote sensing imaging system, and image acquisition system thereof |
| CN104297831A (en) * | 2014-10-28 | 2015-01-21 | 北京思比科微电子技术股份有限公司 | Grating of optical fingerprint sensor chip module and manufacturing method for grating |
| CN107822592A (en) * | 2016-09-15 | 2018-03-23 | 超级医药成像有限公司 | system and method for measuring tissue oxygenation |
| CN107331677A (en) * | 2017-07-19 | 2017-11-07 | 北京思比科微电子技术股份有限公司 | A kind of imaging sensor of multispectral imaging |
| CN110383286A (en) * | 2019-05-22 | 2019-10-25 | 深圳市汇顶科技股份有限公司 | For the method for bio-identification, fingerprint identification device and electronic equipment |
| CN210894926U (en) * | 2019-11-06 | 2020-06-30 | 深圳市汇顶科技股份有限公司 | Reflective film, backlight module, liquid crystal display and fingerprint recognition device under screen |
| CN211553736U (en) * | 2019-12-04 | 2020-09-22 | 中国人民公安大学 | Hyperspectral detection device of fingerprint on plane carrier |
| CN211044274U (en) * | 2020-02-28 | 2020-07-17 | 深圳市海谱纳米光学科技有限公司 | Fingerprint identification equipment and electronic equipment under screen |
| US20200329205A1 (en) * | 2020-04-02 | 2020-10-15 | Sichuan Dualix Spectral Lmaging Technology Co., Ltd | Hyperspectral camera based on continuously variable film filter and coating method thereof |
| CN111814727A (en) * | 2020-07-22 | 2020-10-23 | 吉林大学 | Hyperspectrum-based potential fingerprint detection method |
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