CN109815941A - Fingerprint identification device and electronic equipment - Google Patents
Fingerprint identification device and electronic equipment Download PDFInfo
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- CN109815941A CN109815941A CN201910188346.1A CN201910188346A CN109815941A CN 109815941 A CN109815941 A CN 109815941A CN 201910188346 A CN201910188346 A CN 201910188346A CN 109815941 A CN109815941 A CN 109815941A
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Abstract
The present invention provides a kind of fingerprint identification device and electronic equipments, it is related to shielding lower fingerprint identification technology field, the fingerprint identification device is used to be arranged in the lower section of display screen, it include: at least one light source module, light source module includes: light source and optically focused camera lens, and optically focused camera lens can be by the specified region of the convergence of rays launched from light source to display screen；Finger print information obtains module, comprising: imaging lens and sensor, in the case where identified object enters in the specified region of display screen, light can be projected on sensor after identified object reflection along imaging lens；Connecting plate, sensor and light source are arranged on connecting plate.Fingerprint identification device and electronic equipment provided by the invention, by being arranged with light source module in display screen, the fingerprint identification function of the fingerprint identification device can be no longer dependent on the light of display screen self-luminous generation, can effectively realize fingerprint identification function under the screen of passive light emitting display.
Description
Technical field
This application involves lower fingerprint identification technology field is shielded, set more particularly, to a kind of fingerprint identification device and electronics
It is standby.
Background technique
Biological identification technology has been widely used in smart phone, wherein being developed especially with fingerprint identification technology the most fast
Speed.Optical fingerprint identification technology has been widely used in shielding intelligent hand with OLED (Organic Light-Emitting Diode)
Machine is under the smart phone screen of representative.Its principle is: the light transmission that fingerprint identification device has using OLED screen itself under OLED screen
Characteristic, the reflected light formed after being identified object reflection issued by receiving OLED screen itself, carries out fingerprint detection.
It can be seen that fingerprint identification device usually requires to light corresponding fingerprint knowledge by OLED screen cooperation under current screen
Other region, is just able to achieve fingerprint identification function.
Summary of the invention
It to achieve the above object, can be effective this application provides a kind of new fingerprint identification device and electronic equipment
Realize fingerprint identification function under the screen of passive light emitting display, technical solution is as described below:
A kind of fingerprint identification device, the fingerprint identification device are used to be arranged in the lower section of display screen, comprising: at least one
Light source module, the light source module include: light source and optically focused camera lens, the light that the optically focused camera lens can will be launched from the light source
Line converges to the specified region of the display screen；Finger print information obtains module, comprising: imaging lens and sensor, identified
In the case that object enters in the specified region of the display screen, the light can after the identified object reflects, along it is described at
As camera lens is projected on the sensor；Connecting plate, the sensor and the light source are arranged on the connecting plate.
As a preferred embodiment, the optically focused camera lens includes: lens, number >=1 of the lens.
As a preferred embodiment, the sensor and the light source are integrated in integrated chip, it is described integrated
Chip is arranged on connecting plate.
As a preferred embodiment, further include: bracket, the bracket are arranged in the connecting plate and the display
Between screen, the optically focused camera lens and the imaging lens are respectively mounted on the bracket.
As a preferred embodiment, the light source and the sensor are along the plane for being parallel to the display screen
It is adjacently positioned and is provided with preset distance between the two.
As a preferred embodiment, the preset distance is 0~15mm.
As a preferred embodiment, the optically focused camera lens is located at the surface of the light source, the imaging lens
Positioned at the surface of the sensor.
As a preferred embodiment, the light source module is provided with several, multiple light sources are with the biography
It is symmetrical arranged centered on sensor.
As a preferred embodiment, the sensor and the light source can be electrically connected with central controller,
The central controller can drive the light source to issue light signal.
As a preferred embodiment, the light signal is infrared light supply, the sensor is infrared sensor
It or include the sensor of infrared band, visible light wave range.
As a preferred embodiment, the light signal is visible light source, the sensor is visible light biography
Sensor or include infrared band, visible light wave range sensor.
A kind of electronic equipment, has display screen and memory, and the electronic equipment includes the fingerprint identification device.
As a preferred embodiment, the display screen is self light emitting display panel.
As a preferred embodiment, the display screen is passive light emitting display.
Fingerprint identification device and electronic equipment provided by the present application have the following advantages and features: the fingerprint recognition dress
It installs and is equipped with light source module, light source needed for light source module is capable of providing fingerprint recognition.The light source module includes: light source and gathers
Light microscopic head, wherein the convergence of rays launched from light source can be improved the luminous efficiency and incidence of light source by optically focused camera lens
Intensity, so that the identified object that the light that light source is launched can be placed on display screen surface obtains.
Compared with the existing technology, the fingerprint identification function of the fingerprint identification device can for fingerprint identification device provided by the present application
To be no longer dependent on the light of display screen self-luminous generation, fingerprint recognition function under the screen of passive light emitting display can be effectively realized
Can, display screen can only do the prompt etc. of the application interactive information cooperated.
Referring to following description and accompanying drawings, specific implementations of the present application are disclosed in detail, specify the original of the application
Reason can be in a manner of adopted.It should be understood that presently filed embodiment is not so limited in range.In appended power
In the range of the spirit and terms that benefit requires, presently filed embodiment includes many changes, modifications and is equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
It uses in a other embodiment, is combined with the feature in other embodiment, or the feature in substitution other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when using herein, but simultaneously
It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.
Detailed description of the invention
Fig. 1 is the fingerprint identification device structural schematic diagram in the application embodiment；
Fig. 2 is another fingerprint identification device structural schematic diagram in the application embodiment；
Fig. 3 is the working principle diagram of the fingerprint identification device in the application embodiment.
Description of symbols:
1, fingerprint identification device；11, optically focused camera lens；12, light source；13, imaging lens；14, sensor；15, connecting plate；
16, integrated chip；2, display screen.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, elaborate to technical solution of the present invention, it should be understood that these
Embodiment is merely to illustrate the present invention rather than limitation range, after the present invention has been read, those skilled in the art couple
The modification of various equivalent forms of the invention is each fallen in the application range as defined in the appended claims.
It should be noted that it can directly on the other element when element is referred to as " being set to " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", "upper",
"lower", "left", "right" and similar statement for illustrative purposes only, are not meant to be the only embodiment.
The present invention provides a kind of fingerprint identification devices 1, and as shown in Figure 1 to Figure 3, the fingerprint identification device 1 is for setting
It sets in the lower section of display screen 2, comprising: at least one light source module, the light source module include: light source 12 and optically focused camera lens 11,
The optically focused camera lens 11 can will be from the convergence of rays that the light source 12 is launched to the specified region of display screen 2；Finger print information obtains
Modulus block, comprising: imaging lens 13 and sensor 14, the situation in the specified region that identified object enters the display screen 2
Under, the light can be projected on the sensor 14 after the identified object reflection along the imaging lens 13；Connecting plate
15, the sensor 14 and the light source 12 are arranged on connecting plate 15.
Fingerprint identification device 1 provided by the present application has the following advantages and features: the fingerprint identification device 1 is provided with light
Source module, light source needed for light source module is capable of providing fingerprint recognition.The light source module includes: light source 12 and optically focused camera lens
11, wherein the convergence of rays launched from light source 12 can be improved the luminous efficiency of light source 12 and entered by optically focused camera lens 11
Intensity is penetrated, so that the identified object that the light that light source 12 is launched can be placed on 2 surface of display screen obtains.
Fingerprint identification device 1 provided by the present application compared with the existing technology, the fingerprint identification function of the fingerprint identification device 1
It can be no longer dependent on the light of 2 self-luminous of display screen generation, can effectively realize fingerprint recognition under the screen of passive light emitting display
Function, display screen 2 can only do the prompt etc. of the application interactive information cooperated.
It should be noted that fingerprint recognition described above, is only with one of user biological feature common reality
Apply example.In the embodiment that can be envisioned, those skilled in the art, which can extend the technical solution of embodiment provided herein, to be transported
For in the verifying scene of any appropriate biological characteristic.Such as this biological information of iris by obtaining user carries out
The scene of verifying, the embodiment of the present invention are not construed as limiting this.
It is hereafter to state scene to obtain user fingerprints information as main and illustrate.But based on above description it is found that this hair
Therefore the protection scope of bright embodiment is not limited.
Specifically, the light source module is for light source needed for providing fingerprint recognition.The light source module at least has one
A, specific number is not construed as limiting.Light source module specifically includes: light source 12 and optically focused camera lens 11.The optically focused camera lens 11 is located at
The top of the light source 12, for emitting beam, the light that optically focused camera lens 11 is used to issue the light source 12 carries out light source 12
It assembles, to improve the service efficiency and luminous efficiency of light.
In the present embodiment, the optically focused camera lens 11 being arranged above the light source 12 at least has one.In the light source module
Light source 12 can be LED light source, the light source of infrared band or the light source of visible light wave range can be issued.As shown in figure 3,
The light source 12 is in the specified cog region after the refraction of the optically focused camera lens 11, convergence, being incident on display screen 2
Domain, so as to pass through the display screen 2 and be incident on the finger being placed at specified region.In addition, by being provided with optically focused
Camera lens 11 can change light-emitting angle required for light source 12, to guarantee that incident ray can be smoothly incident on display screen 2
Fingerprint identification region.
Specified identification region described herein can be not limited at one, can be more by being provided with above light source 12
A optically focused camera lens 11, specified identification region can be distributed in multiple positions of display screen 2.
The optically focused camera lens 11 includes lens barrel and the optical mirror slip being arranged in lens barrel, and the optical mirror slip is specially lens,
It may include single element lens, can also be made of lens group.The number of the lens is with specific reference to actual needs and display
The installation space of 2 lower section of screen is adjusted.When optically focused camera lens 11 has multi-disc lens, multiple single element lens can be passed through into note
The lens group of an entirety is completed in modeling, and specific implementation is not construed as limiting.By the refraction of multiple lens, can further increase
The luminous efficiency of light source 12, to increase the intensity of incident ray, it is ensured that the light source or visible for the infrared band that light source 12 issues
The light source of light section can be placed on acquired in the finger at specified identification region.
Further, in order to ensure light source 12 is after the refraction of optically focused camera lens 11, optimal spotlight effect can be reached, needed
Adjust the vertical range between lens or lens group and display screen 2.When light source 12 emits beam, light is passed through in the two sides of lens
After crossing repeatedly refraction, it is ensured that the light being emitted on display screen 2 has enough brightness and light-emitting area, or can be according to display
The demand for shielding 2 lower section installation spaces selects applicable lens prescriptions, the service efficiency of Lai Tigao optically focused camera lens 11.The lens
Material be preferably optical glass, have many advantages, such as that light transmittance is high, heatproof is high.
The finger print information obtains module and is used to handle to handling the reflected light formed after digital reflex.Specifically, referring to
Line data obtaining module includes: imaging lens 13 and sensor 14.The imaging lens 13 are located at the top of sensor 14.The biography
Sensor 14 is used to receive the reflected light for handling digital reflex formation, and the sensor 14 can sense for simple visible light wave range
Device, or simple infrared band sensor, or the wide band sensor for including for two above wave band.Specifically
, in the present embodiment, when the light source 12 is infrared light supply, the sensor 14 is infrared sensor or includes infrared waves
The sensor of section, visible light wave range；When the light source 12 is visible light source, the sensor 14 is visible light sensor or packet
Sensor containing infrared band, visible light wave range.
Imaging lens 13 include lens barrel and the lens being arranged in lens barrel, may include single element lens, can also be by saturating
Microscope group composition.The number of the lens can according to actual needs and the installation space of 2 lower section of display screen is adjusted.Pass through
The refraction of multi-disc lens, to increase the intensity of transmitting light, it is ensured that transmitting light can be in the biography being placed in below imaging lens 13
It is imaged on sensor 14.Wherein, reflected light carries the fingerprint feature information of user's finger.For example, the light that light source 12 issues exists
After the fingerprint of user's finger emits, due to reflecting the reflected light of varying strength at the wrinkle ridge of finger print and line paddy,
Therefore reflected light Portable belt has the finger print information of user.When the imaged camera lens 13 of reflected light reflects and reaches sensor 14, pass
Sensor 14 receives finger print information and is analyzed and processed, to complete fingerprint identification function.Realize that fingerprint is known about sensor 14
Disclosed by the prior art, the application is not described in detail the principle of other function herein.
In a specific embodiment, the light source 12 and the sensor 14 are along being parallel to the display screen 2
Plane be adjacently positioned and be provided with preset distance between the two.Specific value the application of the preset distance is not construed as limiting,
It is arranged in principle according to minimum spacing required between the light source 12 and sensor 14, so as to reduce required space
Size.Preferably, the distance between the sensor 14 and the light source 12 are 0~15mm.By light source 12 and 14 phase of sensor
Neighbour places, in this way, space on the one hand can be saved, on the other hand can guarantee to handle digital reflex formation reflected light can fall into
In the areas imaging of sensor 14.Further, which can also include: connecting plate 15, the sensor 14
It is separately positioned on connecting plate 15 with the light source 12, the connecting plate 15 is specifically as follows FPC (Flexible Printed
Circuitboard, flexible printed circuit board).
In a feasible embodiment, as shown in Fig. 2, the sensor 14 and the light source 12 are integrated in integrated core
On piece 16, the integrated chip 16 is arranged on connecting plate 15.It is arranged in a manner of chip by sensor 14, light source 12
It in integrated chip 16, can be realized that sensor 14 is integrated with light source 12, realize that the volume of the fingerprint identification device 1 is small-sized
Change, more spaces, the integrality of security function can be provided for other module sections.Specifically, the sensor 14 and light source
12 integration mode is not construed as limiting.
In the present embodiment, the fingerprint identification device 1 further includes bracket, and the bracket is arranged in the connecting plate 15
Between the display screen 2, the optically focused camera lens 11 and the imaging lens 13 are respectively mounted on the bracket.The bracket
Inner wall is provided with internal screw thread, and the lens barrel of the optically focused camera lens 11 and the lens barrel outer wall of imaging lens 13 are provided with external screw thread, mirror
Cylinder and bracket are in mating connection by way of screw thread.By turn lens barrel, the distance between lens and display screen can be changed.
Specifically, a kind of fixed form such as the frame bottom can be by passing on glue fixed connecting plate 15 so that camera lens be made to be located at
The top of sensor 14 and light source 12.
In a specific embodiment, when bracket being arranged above connecting plate 15, the optically focused camera lens 11 can be with
Positioned at the surface of the light source 12, the imaging lens 13 can be located at the surface of the sensor 14.To work as light source
12 when emitting beam, and the luminous energy that light source 12 issues is as much as possible to be upwardly propagated, to improve shining for light source 12 as far as possible
Intensity.When light is after finger reflects to form reflected light, it is as much as possible to emit light for the lens being arranged by imaging lens 13
It drops on the sensor 14 immediately below imaging lens 13, to be imaged on sensor 14.
In a feasible embodiment, when the light source module is provided with several, multiple light sources 12 can be with
It is symmetrical arranged centered on the sensor 14, certainly, the relative position between the light source module and sensor 14 does not limit
It is fixed.By being provided with multiple light sources module, the superposition of light can be realized, to further increase the intensity of incident ray.Institute
The number the application for stating light source module is not especially limited, and the number of light source module can be adjusted according to actual needs.
Corresponding, the light source 12 and optically focused camera lens 11 can be symmetrical arranged centered on sensor 14.It is multiple described
Light is projected to the fingerprint on display screen 2 and known by convergence and refraction of the light through multiple optically focused camera lenses 11 that light source 12 issues
Other region.It should be noted that the purpose for being provided with multiple light sources module is to realize the superposition of incident ray, to improve hair
Luminous intensity, it is any with this purpose and to the embodiment that the number of light source module, position are adjusted, it should all cover in the application
Within the scope of patent protection.
In the present embodiment, the sensor 14 can be electrically connected with the light source 12 with the central controller,
The central controller can drive the light source 12 to issue light signal.
Specifically, push action can be shown screen 2 when the identification region that user's finger pressing is specified on the display screen 2
Identification, and operated by central controller controls two: 1, it issues and orders, driving light source 12 issues optical signal；2, sensing is adjusted
The working condition of device 14, so that sensor 14 is switched to operating mode from suspend mode.By central controller to light source 12, biography
Figure movement is adopted in the adjustment effect of sensor 14, completion, and the collected finger print information of sensor 14 is transferred to central control by sensor 14
Device processed, after the finger print information that central controller receives sensor 14, the image optimization algorithm process of operation, and can be into
One step carries out fingerprint matching verifying, to complete the authentication of active user.
Present invention also provides a kind of electronic equipment, the electronic equipment has display screen 2 and memory, and the electronics is set
Standby includes above-mentioned fingerprint identification device 1.
The electronic equipment may include such as smart phone, laptop, tablet computer, game station it is portable or
Other electronic equipments such as mobile computing device and electronic databank, the application are not construed as limiting this.The display screen 2 can be with
It using self light emitting display panel, for example can be OLED display screen or micro-led (Micro-LED) display screen.When
So, the display screen can also use passive light emitting display, such as TFT-LCD (Thin Film Transistor-Liquid
Crystal Display) other passive light emitting displays such as display screen or LCD (Liquid Crystal Display), this
Application embodiment does not limit this.
By taking smart phone as an example, as shown in Figure 1 to Figure 3, to the application embodiment provide fingerprint identification device 1 do into
One step illustrates.
The lower section of display screen 2 is arranged in the fingerprint identification device 1, comprising: light source 12, optically focused camera lens 11, imaging lens
13 and sensor 14, the optically focused camera lens 11 is arranged in the surface of light source 12, and the optically focused camera lens 11 can will be from the light source
12 convergences of rays launched are to the specified region of display screen 2；The surface of sensor 14 is arranged in the imaging lens 13,
In the case that identified object enters in the specified region of the display screen 2, the light can be after the identified object reflection, edge
The imaging lens 13 are projected on the sensor 14；Connecting plate 15, the sensor 14 and the setting of the light source 12 are even
On fishplate bar 15.
When the identification region that user's finger pressing is specified on the display screen 2, push action can be shown 2 identification of screen, when
After central controller recognizes the push action, two operations being controlled: 1, issuing order, driving light source 12 issues optical signal；2,
The working condition for adjusting sensor 14, so that sensor 14 is switched to operating mode from suspend mode.The light source 12 issues light
Signal converges to the identification region specified on display screen 2 after the optically focused camera lens 11 refraction, and light after convergence can be by
Be placed on fingerprint on 2 surface of display screen to obtain, and emit in the fingerprint of user's finger, due to finger print wrinkle ridge with
The reflected light of varying strength is reflected at line paddy, therefore reflected light Portable belt has the finger print information of user.When reflected light is imaged
When camera lens 13 reflects and reaches sensor 14, sensor 14 receives finger print information and is analyzed and processed, and moves so that figure is adopted in completion
Make.The collected finger print information of sensor 14 is transferred to central controller by sensor 14, receives sensing in central controller
After the finger print information of device 14, the image optimization algorithm process of operation, and can be verified with further progress fingerprint matching, thus complete
At the authentication of active user.
Fingerprint identification device 1 provided by the embodiments of the present application can be no longer dependent on the light of 2 self-luminous of display screen generation,
It can effectively realize fingerprint identification function under the screen of passive light emitting display, it is mutual that display screen 2 can only do the application cooperated
The prompt etc. of dynamic information.According to non-spontaneous optical screen, compared to the prior art in self light emitting display panel, long service life, consumption
Electricity is few, advantage at low cost.
Above-described embodiment is only the technical concepts and features for illustrating the application, and its object is to allow person skilled in the art
Scholar can understand present context and implement accordingly, and the protection scope of the application can not be limited with this.It is all according to the application
Equivalent change or modification made by Spirit Essence should all cover within the scope of protection of this application.
Multiple element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Optionally
Ground, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation.It is used to
The open "a" or "an" for describing element, ingredient, component or step is not intended to exclude other elements, ingredient, component
Or step.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch
It states, many embodiments and many applications except provided example all will be aobvious and easy for a person skilled in the art
See.Therefore, the range of this introduction should not be determined referring to foregoing description, but should referring to appended claims and this
The full scope of the equivalent that a little claims are possessed determines.For comprehensive purpose, all articles and with reference to including special
The disclosure of benefit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims
Any aspect is not intended to abandon the body matter, also should not be considered as applicant the theme is not thought of as it is disclosed
Apply for a part of theme.
Claims (14)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910188346.1A CN109815941B (en) | 2019-03-13 | 2019-03-13 | Fingerprint recognition device and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910188346.1A CN109815941B (en) | 2019-03-13 | 2019-03-13 | Fingerprint recognition device and electronic device |
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| CN109815941A true CN109815941A (en) | 2019-05-28 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110427921A (en) * | 2019-08-30 | 2019-11-08 | 上海思立微电子科技有限公司 | fingerprint identification system |
| CN111461082A (en) * | 2019-06-13 | 2020-07-28 | 神盾股份有限公司 | Under-screen fingerprint sensing module and electronic device |
| CN112016541A (en) * | 2019-05-30 | 2020-12-01 | 北京小米移动软件有限公司 | Electronic device and fingerprint recognition image acquisition method |
| CN112904936A (en) * | 2019-12-04 | 2021-06-04 | Oppo广东移动通信有限公司 | Electronic device |
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| CN209560562U (en) * | 2019-03-13 | 2019-10-29 | 上海思立微电子科技有限公司 | Fingerprint identification device and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112016541A (en) * | 2019-05-30 | 2020-12-01 | 北京小米移动软件有限公司 | Electronic device and fingerprint recognition image acquisition method |
| CN111461082A (en) * | 2019-06-13 | 2020-07-28 | 神盾股份有限公司 | Under-screen fingerprint sensing module and electronic device |
| CN110427921A (en) * | 2019-08-30 | 2019-11-08 | 上海思立微电子科技有限公司 | fingerprint identification system |
| CN112904936A (en) * | 2019-12-04 | 2021-06-04 | Oppo广东移动通信有限公司 | Electronic device |
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