CN105989342A - Fingerprint identification device and fingerprint identification system - Google Patents
Fingerprint identification device and fingerprint identification system Download PDFInfo
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- CN105989342A CN105989342A CN201510086627.8A CN201510086627A CN105989342A CN 105989342 A CN105989342 A CN 105989342A CN 201510086627 A CN201510086627 A CN 201510086627A CN 105989342 A CN105989342 A CN 105989342A
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Abstract
The invention relates to a fingerprint identification device and a fingerprint identification system. The fingerprint identification device includes a first light source, a second light source and a sensor; the first light source is used for emitting first emergent light, wherein the first emergent light is transmitted through a finger to form first detection light; the second light is used for emitting second emergent light, wherein the second emergent light is reflected at the surface of the finger so as to form second detection light; and the sensor is used for receiving the first detection light so as to carry living body judgment and is also used for receiving the second detection light so as to carry out fingerprint identification. The fingerprint identification device can not only carry out fingerprint recognition, but also can carry out living body judgment, and therefore, with the fingerprint identification device adopted, whether an object arranged on the sensor is a living body can be identified, and security can be improved with the FAR (false accept rate) and FRR (false rejection rate) of fingerprint detection ensured.
Description
Technical field
The present invention relates to photoelectric field, particularly relate to a kind of fingerprint identification device and fingerprint recognition system.
Background technology
Fingerprint identification technology, is the fingerprint image being collected human body by fingerprint sensor, then with system
In existing fingerprint imaging information compare, whether carry out correct judgment, and then realize the skill of identification
Art.The convenience used due to it, and the uniqueness of somatic fingerprint, fingerprint identification technology is the most a large amount of
It is applied to every field, such as the field of safety check such as public security bureau, customs, the gate control system of building, and individual
Consumer product area such as people's computer and mobile phone etc..
Optical fingerprint imaging system is the system that a kind of refraction utilizing light and principle of reflection gather fingerprint.
As it is shown in figure 1, existing optical fingerprint imaging system is mainly by backlight 10, optical fingerprint sensor 12
Form with protection glass 13.When gathering fingerprint image, human body finger 14 is positioned over protection glass 103
On.The emergent light 11 (in Fig. 1 shown in the long arrow upwards of direction) of backlight 10 passes through optical finger print
Sensor 12 and protection glass 13, and reflect with the contact interface protecting glass 13 at human body finger 14
And transmission, forming reflection light 15 (shown in the short arrow that in Fig. 1, direction is downward), reflection light 15 is saturating
Overprotection glass 13, is irradiated on optical fingerprint sensor 12, and optical fingerprint sensor 12 carries out photoelectricity
Conversion and signal processing, thus realize the collection of fingerprint image.Human body finger 14 and protection glass 13
Contact surface feature reflects the fingerprint characteristic of human body, and the feature of this contact surface can directly affect reflection light
The feature of 15, therefore, the image that optical fingerprint sensor 12 collects directly reflects the spy of somatic fingerprint
Levy.
Current fingerprint recognition system can obtain the highest refusing sincere (FAR) and recognize on the least volume
False rate (FRR), but gathered and be positioned at finger skin surface for the image identified, it is easy to it is replicated, no
Can check whether the fingerprint into live body itself, therefore safety is the highest.
Summary of the invention
The problem that the present invention solves is to provide a kind of fingerprint identification device and fingerprint recognition system, described finger
Stricture of vagina identification device not only has the function of fingerprint recognition, also has vivo identification function, therefore, described finger
Stricture of vagina identification device not only has higher FAR and FRR, also has higher safety.
For solving the problems referred to above, the present invention provides a kind of fingerprint identification device, including:
First light source, is used for sending the first emergent light, and described first emergent light penetrates finger, forms first
Detection light；
Secondary light source, is used for sending the second emergent light, and described second emergent light reflects at finger surface,
Form the second detection light；
Sensor, is used for receiving described first detection light, to carry out live body judgement；It is additionally operable to receive second
Detection light, to carry out fingerprint recognition.
Optionally, described sensor includes ccd sensor, cmos sensor and glass basis sensing
Device.
Optionally, described sensor is flat panel sensor, including substrate and the pixel being positioned on described substrate
Cell array.
Optionally, described first light source includes infrared LED, is used for sending wavelength in 700 to 1000 nanometers
In the range of the first emergent light.
Optionally, described secondary light source includes visible LED, is used for sending wavelength and receives 400 to 800
The second emergent light in the range of meter.
Optionally, described first light source is positioned at above described sensor, described first light source and sensor it
Between there is the space for accommodating finger, described secondary light source is positioned at below described sensor；
Or, described secondary light source is positioned at described sensor both sides or side.
Optionally, the quantity of described first light source is two groups, and described in two groups, the first light source is positioned at described sensing
Above device and be oppositely arranged, for sending the first emergent light of relative exposure, described two group of first light source with
There is between sensor the space for accommodating finger；
Described secondary light source is positioned at described sensor perimeter or lower section.
Optionally, described fingerprint identification device also includes that housing, described housing include bottom shell and be positioned at
Two side on bottom shell, described bottom shell and two side surround the U-shaped groove for accommodating finger；
Described two group of first light source lays respectively on the two side of housing.
Optionally, described sensor is positioned on described bottom shell, and described secondary light source is positioned at sensor two
On the bottom shell of side.
Optionally, described bottom shell upper surface is plane, and described sensor is flat panel sensor and is positioned at
On described bottom shell；
Described secondary light source is backlight, between sensor and bottom shell, sends towards described biography
Second emergent light of sensor.
The present invention also provides for a kind of fingerprint recognition system, including:
The fingerprint identification device that the present invention provides；
Control unit, is connected with described first light source and secondary light source, for controlling the first light source and second
The opening and closing of light source, make described sensor receive the first detection light, and form the first identification image,
Described sensor receives the second detection light, and forms the second identification image；
Live body judging unit, is connected with described sensor, for identifying that image is lived according to described first
Body judges；
Fingerprint identification unit, is connected with described sensor, for identifying that image refers to according to described second
Stricture of vagina identification.
Compared with prior art, technical scheme has the advantage that
In technical scheme, fingerprint identification device includes the first light source, is used for sending the first outgoing
Light, described first emergent light penetrates finger, forms the first detection light；Secondary light source, is used for sending second
Emergent light, described second emergent light reflects at finger surface, forms the second detection light；For receiving
Described first detection light, to carry out live body judgement；Receive the second detection light, to carry out fingerprint recognition.
When carrying out fingerprint recognition, finger is positioned over above described sensor；Open the first light source, close
Closing secondary light source, described sensor receives the first detection light, and forms the first identification image, with described
First identifies that image carries out live body judgement；Opening secondary light source, close the first light source, described sensor connects
Receive the second detection light, and form the second identification image, identify that image carries out fingerprint recognition with described second.
Fingerprint identification device the most of the present invention is not only able to carry out fingerprint recognition, moreover it is possible to carry out live body judgement, differentiates
It is positioned over whether the object above described sensor is live body, at FAR and FRR ensureing fingerprint detection
Meanwhile, improve safety.
Further, described fingerprint identification device includes that housing, described housing include bottom shell and be positioned at
Two side on bottom shell, described bottom shell and two side surround the U-shaped groove for accommodating finger,
Described two group of first light source lays respectively on the two side of housing.Described two group of first light source send first
Emergent light projects on finger in opposite directions, and the first, second detection light formed after penetrating finger exists
Reflect on finger skeleton, enter in sensor, owing to finger is positioned in U-shaped groove, maniphalanx
The first, second detection light that bone is reflected back is blocked by the housing, and is gathered in U-shaped groove so that maniphalanx
The first, second detection light major part that bone is reflected back all enters in described sensor, improves fingerprint recognition
The sensitivity of device.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of existing optical finger print imaging system；
Fig. 2 is the schematic diagram of fingerprint identification device one embodiment of the present invention；
Fig. 3 is the schematic diagram of another embodiment of fingerprint identification device of the present invention；
Fig. 4 is the schematic diagram of fingerprint identification device another embodiment of the present invention；
Fig. 5 is the schematic diagram of the another embodiment of fingerprint identification device of the present invention；
Fig. 6 is the schematic diagram of fingerprint recognition system one embodiment of the present invention.
Detailed description of the invention
As stated in the Background Art, existing optical fingerprint identification system can obtain the highest on the least volume
Refuse sincere (FAR) and accuracy of system identification (FRR), but gathered and be positioned at finger skin for the image identified
Surface, it is easy to be replicated, it is impossible to checking whether the fingerprint into live body itself, therefore safety is the highest.
To this end, the present invention provides a kind of fingerprint identification device and detection method, described fingerprint identification device
Including the first light source, being used for sending the first emergent light, described first emergent light penetrates finger, forms first
Detection light；Secondary light source, is used for sending the second emergent light, and described second emergent light occurs at finger surface
Reflection, forms the second detection light；Sensor, is used for receiving described first detection light and the second detection light,
And carry out live body judgement and fingerprint recognition.
When carrying out fingerprint recognition, finger is positioned over above described sensor；Open the first light source, close
Closing secondary light source, described sensor receives the first detection light, and forms the first identification image, with described
First identifies that image carries out live body judgement；Opening secondary light source, close the first light source, described sensor connects
Receive the second detection light, and form the second identification image, identify that image carries out fingerprint recognition with described second.
Fingerprint identification device the most of the present invention is not only able to carry out fingerprint recognition, moreover it is possible to carry out live body judgement, differentiates
It is positioned over whether the object above described sensor is live body, at FAR and FRR ensureing fingerprint detection
Meanwhile, improve safety.
Understandable, below in conjunction with the accompanying drawings for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from
The specific embodiment of the present invention is described in detail.
Refer to Fig. 2, it is shown that the schematic diagram of fingerprint identification device one embodiment of the present invention.The present embodiment refers to
Stricture of vagina identification device includes:
First light source 101, is used for sending the first emergent light 103, and described first emergent light 103 penetrates finger
200, form the first detection light 104.
Secondary light source 102, is used for sending the second emergent light 105, and described second emergent light 105 is at finger watch
Face 200 is reflected, and forms the second detection light 106.
Sensor 100, is used for receiving described first detection light 104, to carry out live body judgement；It is additionally operable to connect
Receive the second detection light 106, to carry out fingerprint recognition.
When carrying out fingerprint recognition, finger 200 is positioned over above described sensor 100；Open first
Light source 101, closes secondary light source 102, and described sensor 100 receives the first detection light, and forms the
One identifies image, identifies that image carries out live body judgement with described first；Open secondary light source 102, close the
One light source 101, described sensor receives the second detection light 106, and forms the second identification image, with institute
State the second identification image and carry out fingerprint recognition.Fingerprint identification device the most of the present invention is not only able to carry out fingerprint
Identify, moreover it is possible to carry out live body judgement, differentiate to be positioned over whether the object above described sensor 100 is alive
Body, while ensureing FAR and FRR of fingerprint detection, improves safety.
With continued reference to Fig. 2, in the present embodiment, described sensor 100 is flat panel sensor, including substrate
With the pixel unit array being positioned on described substrate, described pixel unit array is by multiple photodiode groups
Become.
In the present embodiment, the processing technology of described pixel unit array, can be amorphous silicon technology, it is possible to
To be oxide semiconductor technology, it is also possible to be low temperature polysilicon process.
But the type of described sensor is not limited by the present invention, in other embodiments, described sensing
Device can also be ccd sensor, cmos sensor or glass basis sensor.
With continued reference to Fig. 2, in the present embodiment, described first light source 101 is infrared LED, sent
One emergent light 103 is near infrared light.When the wavelength of the first emergent light 103 is long or too short, first goes out
Penetrating light 103, to be all difficult to meet sensor 100 through the first detection light 104 light intensity that finger 200 is formed right
The requirement of vivo identification, the first identification figure easily causing formation is clear, therefore, in this enforcement not
Example sends the wavelength the first emergent light in 700 to 1000 nanometer range.
But the particular type of the first light source 101 is not limited by the present invention, in other embodiments, institute
State the first light source 101 and can also can send the other light sources of light of transmission finger, such as ultraviolet for other
LED。
Described secondary light source 102 is visible LED, sends wavelength in 400 to 800 nanometer range
Second emergent light.When the wavelength of the second emergent light is in 400 to 800 nanometer range, described sensor
The the second identification image formed on 100 is more clear, is conducive to improving the precision of fingerprint recognition.But this
Bright the particular type of described secondary light source 102 and the wave-length coverage of the second emergent light are not limited, only
Typically requiring of fingerprint recognition need to be met.
With continued reference to Fig. 2, in the present embodiment, described first light source 101 is positioned on described sensor 100
Side, has the space for accommodating finger 200 between described first light source 101 and sensor 100.This
Sample is advantageous in that, when carrying out vivo identification, described first light source 101 is positioned at above finger 200,
Described first detection light 104 is the near infrared light through finger 200, has a stronger light intensity, correspondingly,
The the first identification image formed on described sensor 100 is the most clear, it is possible to preferably reaction finger 200
Vein distribution, be conducive to carrying out vivo identification.
With continued reference to Fig. 2, in the present embodiment, described secondary light source 102 is positioned at described sensor 100 liang
Side.Specifically, described secondary light source 102 includes two groups of visible LEDs, lays respectively at described sensor
The both sides of 100, the second emergent light 105 that described secondary light source 102 sends is from laterally inciding finger 200
Surface and reflect, formed second detection light 106.
But the position relationship of described secondary light source 102 with described sensor 100 is not limited by the present invention,
In other embodiments, described secondary light source 102 can enter to include one group of visible LED, is positioned at described
Sensor 100 with side.
When described sensor 100 is transparent flat panel sensor, described secondary light source 102 can also position
Below described sensor 100.The second emergent light 105 that described secondary light source 102 sends is from along vertical
Incide the surface of finger 200 in the direction of described sensor 100 and reflect, forming the second detection
Light 106, so arranges and is advantageous in that, is conducive to reducing the area of fingerprint identification device.
With reference to Fig. 3, it is shown that the schematic diagram of another embodiment of fingerprint identification device of the present invention.The present embodiment refers to
Stricture of vagina identification device is roughly the same with above-described embodiment, repeats no more with the something in common of above-described embodiment, with
The difference of above-described embodiment is:
Described fingerprint identification device includes two group of first light source 101, and described in two groups, the first light source 101 is positioned at institute
Stating above sensor 100 and be oppositely arranged, the first light source 101 described in two groups sends described two groups and contrasts
The first emergent light 103 penetrated.Have for accommodating between described two group of first light source 101 and sensor 100
The space of finger 200.
The first emergent light 103 that described two group of first light source 101 sends projects finger in opposite directions
On 200, the first detection light 104 formed after penetrating finger 200 reflects on finger skeleton 201,
Enter in sensor 100.So arrange and be advantageous in that, effectively reduce described fingerprint identification device
Highly, described fingerprint identification device is made to be easier to be integrated in portable equipment.
It should be noted that in the present embodiment, described secondary light source 102 with may be located at described sensor
The periphery of 100 or lower section, the invention is not limited in this regard.
Refer to Fig. 4, it is shown that the schematic diagram of fingerprint identification device another embodiment of the present invention.The present embodiment
Fingerprint identification device is roughly the same with above-described embodiment, repeats no more with the something in common of above-described embodiment,
It is with the difference of above-described embodiment:
Described fingerprint identification device includes that housing 300, described housing 300 include bottom shell 302 and be positioned at
Two side 301 on bottom shell 302, described bottom shell 302 and two side 301 surround for accommodating
The U-shaped groove (not shown) of finger 200, described two group of first light source 101 lays respectively at housing 300
On two side 301.
The direction of the first emergent light (not shown) that described two group of first light source 101 sends projects finger
On, the first detection light (not shown) formed after penetrating finger 200 reflects on finger skeleton,
Enter in sensor 100, owing to finger 200 is positioned in U-shaped groove, finger skeleton be reflected back the
One detection light is stopped by housing 300, be gathered in U-shaped groove so that finger skeleton be reflected back first
Detection light major part all enters in described sensor 100, improves the sensitivity of fingerprint identification device.
It should be noted that in the present embodiment, described sensor 100 is positioned at described bottom shell 302
On, described secondary light source 102 is positioned on the bottom shell 302 of sensor 100 both sides.
Described bottom shell 302 upper surface is plane, and described sensor 100 for flat panel sensor and is positioned at
On described bottom shell 302.Such it is advantageous in that, is conducive to reducing the body of described fingerprint identification device
Long-pending, but the concrete shape of described sensor 100 and housing 300 is not limited by the present invention.
With reference to Fig. 5, it is shown that the schematic diagram of the another embodiment of fingerprint identification device of the present invention.The present embodiment refers to
Stricture of vagina identification device is roughly the same with above-described embodiment, repeats no more with the something in common of above-described embodiment, with
The difference of above-described embodiment is:
Described secondary light source 102 is backlight, between sensor 100 and bottom shell 302, sends out
Go out the second emergent light towards described sensor 100.Such it is advantageous in that, reduces U-shaped groove
Floor space, further reduces the volume of described fingerprint identification device.
The present invention also provides for a kind of fingerprint recognition system, and fingerprint recognition system of the present invention includes that the present invention is carried
The described fingerprint identification device of confession.
In the present embodiment, specifically, refer to Fig. 6, described fingerprint identification device includes:
First light source 101`, is used for sending the first emergent light 103`, described first emergent light 103` and penetrates hands
Refer to, form the first detection light 104`.
Secondary light source 102`, is used for sending the second emergent light 105`, and described second emergent light 105` is at finger
Surface is reflected, and forms the second detection light 106`.
Sensor 100`, is used for receiving described first detection light 104` and the second detection light 106`, and carries out
Live body judges and fingerprint recognition.
With continued reference to Fig. 6, the present embodiment fingerprint recognition system includes:
Control unit 301, be connected 102` with described first light source 101` and secondary light source, for control
One light source 101` and the opening and closing of secondary light source 102`, make described sensor 100` receive the first inspection
Light-metering 104`, and form the first identification image, described sensor 100` receives the second detection light 106`,
And form the second identification image.
Live body judging unit 302, is connected with described sensor 100`, for identifying image according to described first
Carry out live body judgement.
Fingerprint identification unit 303, is connected with described sensor 100`, for identifying image according to described second
Carry out fingerprint recognition.
The fingerprint recognition system using the present embodiment to provide carries out the method for fingerprint recognition and includes:
Finger 200` is positioned over above described sensor 100`；
Regulate described control unit 301, open the first light source 101`, close secondary light source 102`, make institute
State sensor 100` and receive the first detection light 104`, and form the first identification image.
Described live body judging unit 302 receives the first identification image, identifies that image is lived with described first
Body judges.
Regulate described control unit 301, open secondary light source 102`, close the first light source 101`, described
Sensor 100` receives the second detection light 106`, and forms the second identification image.
Described fingerprint identification unit 303 receives the second identification image, identifies that image refers to described second
Stricture of vagina identification.
The detection method of fingerprint identification device of the present invention is so used to be not only able to carry out fingerprint recognition, moreover it is possible to
Carry out live body judgement, differentiate to be positioned over whether the object above described sensor is live body, ensure fingerprint
While FAR and FRR of detection, improve safety.
Optionally, when carrying out fingerprint detection, regulate described control unit 301, first open the first light source
101`, closes secondary light source 102`, and described live body judging unit 302 receives the first identification image, sentencing
After disconnected described finger is live body, opening secondary light source 102`, close the first light source 101`, described fingerprint is known
Other unit 303 receives the second identification image, carries out fingerprint recognition.Such it is advantageous in that, is living
After body identification, if it is determined that the finger of the object non-living body on sensor 100`, then can omit fingerprint
The step identified, the time-consuming and energy.
Although present disclosure is as above, but the present invention is not limited to this.Any those skilled in the art,
Without departing from the spirit and scope of the present invention, all can make various changes or modifications, therefore the guarantor of the present invention
The scope of protecting should be as the criterion with claim limited range.
Claims (11)
1. a fingerprint identification device, it is characterised in that including:
First light source, is used for sending the first emergent light, and described first emergent light penetrates finger, forms first
Detection light；
Secondary light source, is used for sending the second emergent light, and described second emergent light reflects at finger surface,
Form the second detection light；
Sensor, is used for receiving described first detection light, to carry out live body judgement；It is additionally operable to receive second
Detection light, to carry out fingerprint recognition.
2. fingerprint identification device as claimed in claim 1, it is characterised in that described sensor includes that CCD passes
Sensor, cmos sensor and glass basis sensor.
3. fingerprint identification device as claimed in claim 1, it is characterised in that described sensor is flat board sensing
Device, including substrate and the pixel unit array being positioned on described substrate.
4. fingerprint identification device as claimed in claim 1, it is characterised in that described first light source includes infrared
LED, for sending the wavelength the first emergent light in 700 to 1000 nanometer range.
5. fingerprint identification device as claimed in claim 1, it is characterised in that described secondary light source includes visible
Light LED, for sending the wavelength the second emergent light in 400 to 800 nanometer range.
6. fingerprint identification device as claimed in claim 1, it is characterised in that described first light source is positioned at described
Above sensor, there is between described first light source and sensor the space for accommodating finger, described
Secondary light source is positioned at below described sensor；
Or, described secondary light source is positioned at described sensor both sides or side.
7. fingerprint identification device as claimed in claim 1, it is characterised in that the quantity of described first light source is
Two groups, described in two groups, the first light source is positioned at above described sensor and is oppositely arranged, and is used for sending relatively
The first emergent light irradiated, has for accommodating finger between described two group of first light source and sensor
Space；
Described secondary light source is positioned at described sensor perimeter or lower section.
8. fingerprint identification device as claimed in claim 7, it is characterised in that described fingerprint identification device also wraps
Including housing, described housing includes bottom shell and the two side being positioned on bottom shell, described bottom shell
Body and two side surround the U-shaped groove for accommodating finger；
Described two group of first light source lays respectively on the two side of housing.
9. fingerprint identification device as claimed in claim 8, it is characterised in that
Described sensor is positioned on described bottom shell, and described secondary light source is positioned at the bottom shell of sensor both sides
On body.
10. fingerprint identification device as claimed in claim 8, it is characterised in that
Described bottom shell upper surface is plane, and described sensor is flat panel sensor and is positioned at described bottom shell
On body；
Described secondary light source is backlight, between sensor and bottom shell, sends towards described sensing
Second emergent light of device.
11. 1 kinds of fingerprint recognition systems, it is characterised in that including:
Fingerprint identification device as described in any one in claim 1 to 10；
Control unit, is connected with described first light source and secondary light source, for controlling the first light source and the second light
The opening and closing in source, make described sensor receive the first detection light, and form the first identification image,
Described sensor receives the second detection light, and forms the second identification image；
Live body judging unit, is connected with described sensor, for identifying that image carries out live body according to described first
Judge；
Fingerprint identification unit, is connected with described sensor, for identifying that image carries out fingerprint according to described second
Identify.
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| CN201510086627.8A CN105989342A (en) | 2015-02-17 | 2015-02-17 | Fingerprint identification device and fingerprint identification system |
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Cited By (14)
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| WO2018040514A1 (en) * | 2016-08-31 | 2018-03-08 | 上海箩箕技术有限公司 | Optical fingerprint sensor module |
| CN108279810A (en) * | 2018-01-31 | 2018-07-13 | 北京小米移动软件有限公司 | Display module and preparation method thereof, display device |
| CN108427944A (en) * | 2018-05-22 | 2018-08-21 | 三峡大学 | A kind of fingerprint recognition system and recognition methods |
| CN108509821A (en) * | 2017-02-23 | 2018-09-07 | 上海箩箕技术有限公司 | Fingerprint imaging module and electronic equipment |
| CN109151283A (en) * | 2018-09-30 | 2019-01-04 | 联想(北京)有限公司 | Electronic equipment and image procossing mould group |
| CN109564627A (en) * | 2018-10-30 | 2019-04-02 | 深圳市汇顶科技股份有限公司 | Have optical finger print device and hand-held device under the screen of the anti-fake sensing function of optical finger print |
| CN110059523A (en) * | 2018-01-19 | 2019-07-26 | 上海箩箕技术有限公司 | Photodiode and forming method, imaging modules, identity recognition device and method |
| CN110235142A (en) * | 2019-04-29 | 2019-09-13 | 深圳市汇顶科技股份有限公司 | Biometric devices, method and electronic equipment |
| CN111033518A (en) * | 2018-08-15 | 2020-04-17 | 深圳市汇顶科技股份有限公司 | LCD fingerprint identification system, optical fingerprint identification device under screen and electronic device |
| WO2020102945A1 (en) * | 2018-11-19 | 2020-05-28 | 深圳市汇顶科技股份有限公司 | Fingerprint identification method, apparatus and electronic device |
| CN112069942A (en) * | 2020-08-24 | 2020-12-11 | 深圳阜时科技有限公司 | Optical detection system and electronic equipment under screen |
| CN112560566A (en) * | 2019-09-25 | 2021-03-26 | 联咏科技股份有限公司 | Fingerprint identification device |
| WO2021138776A1 (en) * | 2020-01-06 | 2021-07-15 | 深圳市汇顶科技股份有限公司 | Fingerprint anti-counterfeiting method, fingerprint identification device and electronic device |
| TWI767285B (en) * | 2019-11-29 | 2022-06-11 | 神盾股份有限公司 | Fingerprint identification device, electronic device for identificating fingerprint image and fingerprint identification method |
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