CN209640887U - Fingerprint identification device and electronic equipment - Google Patents
Fingerprint identification device and electronic equipment Download PDFInfo
- Publication number
- CN209640887U CN209640887U CN201920632199.8U CN201920632199U CN209640887U CN 209640887 U CN209640887 U CN 209640887U CN 201920632199 U CN201920632199 U CN 201920632199U CN 209640887 U CN209640887 U CN 209640887U
- Authority
- CN
- China
- Prior art keywords
- optical
- light
- wave plate
- identification device
- display screen
- Prior art date
- 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.)
- Active
Links
Landscapes
- Polarising Elements (AREA)
- Image Input (AREA)
Abstract
A kind of fingerprint identification device and electronic equipment, can be improved the quality of fingerprint image and the recognition performance of fingerprint identification device.A kind of fingerprint identification device is used to be set to below the display screen of electronic equipment, comprising: lens subassembly, including at least one optical lens；Light detection array is set to below the lens subassembly；Quarter wave plate and linear polarization structure are set to the display screen into the optical path between the light detection array, and the quarter wave plate is set to the top of the linear polarization structure；Wherein, the light detection array is used to receive the linearly polarized light signal that optical signal passes through the lens subassembly, the quarter wave plate and the linear polarization structure, the optical signal includes the fingerprint optical signal for reflecting or scattering via finger and return, for detecting the finger print information of the finger.
Description
Technical field
This application involves optical finger print technical fields, and set more particularly, to a kind of fingerprint identification device and electronics
It is standby.
Background technique
With the arrival in comprehensive screen mobile phone epoch, the fingerprint identification device under display screen or in display screen is set in mobile phone
Application in equal terminal devices also obtains broad development.In fingerprint identification process, fingerprint identification device is in addition to receiving through receiving and distributing
Other than the fingerprint optical signal with finger print information of digital reflex, a large amount of veiling glare signal, such as the light leakage of display screen can be also received
The spuious optical signal of each laminated construction reflection, causes fingerprint in the received optical signal of fingerprint identification device in signal and display screen
Optical signal accounting is small, and then influences the quality of fingerprint image and the performance of fingerprint recognition, brings undesirable experience to user.
Utility model content
The embodiment of the present application provides a kind of fingerprint identification device and electronic equipment, can be improved the quality of fingerprint image with
And the recognition performance of fingerprint identification device.
In a first aspect, a kind of fingerprint identification device is provided, for being set to below the display screen of electronic equipment, comprising:
Lens subassembly, including at least one optical lens；
Light detection array is set to below the lens subassembly；
Quarter wave plate and linear polarization structure are set to the display screen into the optical path between the light detection array, described
Quarter wave plate is set to the top of the linear polarization structure；
Wherein, the light detection array is for receiving optical signal by the lens subassembly, the quarter wave plate and the line
The linearly polarized light signal of polarization structure, the optical signal include the fingerprint optical signal for reflecting or scattering via finger and return, and are used
In the finger print information for detecting the finger.
The application provides a kind of fingerprinting scheme, by the way that quarter wave plate is arranged in the optical path of optical fingerprint identification device
And linear polarization structure, make spuious natural light by quarter wave plate and linear polarization structure light intensity decreasing, and pass through finger and reflect or dissipate
It penetrates and the light intensity variation after quarter wave plate and linear polarization structure of the fingerprint optical signal that returns is small, exists to increase fingerprint optical signal
Accounting in total optical signal improves the quality of fingerprint image and the recognition performance of fingerprint identification device.
In one possible implementation, the light transmission shaft of the fast axle of the quarter wave plate and the linear polarization structure is at 45 °
Angle.
It in one possible implementation, include circular polarizing disk in the display screen, the fingerprint optical signal is through institute
State finger reflection or scattering and return after, by the circularly polarized light signal of the circular polarizing disk.
In one possible implementation, there are the air gaps between the quarter wave plate and the linear polarization structure.
In one possible implementation, the quarter wave plate and the linear polarization structure are integrally disposed for circular polarization knot
Structure.
In one possible implementation, the quarter wave plate is wholy set in the linear polarization structure:
Between the display screen and the lens subassembly perhaps in the lens subassembly or the lens subassembly and institute
It states between light detection array.
In one possible implementation, the quarter wave plate is wholy set in the linear polarization structure:
The lower surface of the display screen perhaps surface of any of described lens subassembly optical lens or the light
Detect the surface of array.
In one possible implementation, the quarter wave plate is set between the display screen and the lens subassembly,
The linear polarization structure be set in the lens subassembly or the lens subassembly and the light detection array between；
Alternatively, the quarter wave plate is set in the lens subassembly, the linear polarization structure is set to the lens subassembly
Between the light detection array.
In one possible implementation, the quarter wave plate is set to the lower surface of the display screen, the linear polarization
Structure setting is in the surface of any of lens subassembly optical lens or the surface of the light detection array；
Alternatively, the quarter wave plate is set to the surface of any of lens subassembly optical lens, the linear polarization knot
Structure is set to the surface of the light detection array.
In one possible implementation, the linear polarization structure is optical microstructures array, and setting is examined in the light
Survey array surface.
In one possible implementation, in the optical microstructures array orientation of multiple optical microstructures with
The direction of the linearly polarized light signal is vertical.
In one possible implementation, the optical microstructures array is integrated in the light detection array.
In one possible implementation, the fingerprint identification device further includes filter plate, for filtering non-targeted wave
The optical signal of section can further improve signal accounting through the optical signal of target wave band.
In one possible implementation, the filter plate is set to the display screen between the light detection array
Optical path in.
In one possible implementation, the filter plate is set to the display screen, the light detection array, described
The surface of at least one of any of optical module optical lens, the linear polarization structure and the quarter wave plate.
Second aspect provides a kind of electronic equipment, including display screen and such as first aspect or any of first aspect
Fingerprint identification device in possible implementation, wherein the fingerprint identification device is set to below the display screen.
In one possible implementation, the display screen is organic light-emitting diode (OLED) display screen, including circular polarizing disk.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the electronic equipment that the embodiment of the present application is applicable in.
Fig. 2 is a kind of schematic diagram of fingerprint identification device provided by the embodiments of the present application.
Fig. 3 is the schematic diagram of another fingerprint identification device provided by the embodiments of the present application.
Fig. 4 corresponds to the optical signal transmission schematic diagram of the fingerprint identification device of Fig. 3.
Fig. 5 (a) to Fig. 5 (c) is that each section positional relationship is shown in a kind of fingerprint identification device provided by the embodiments of the present application
It is intended to.
Fig. 6 (a) to Fig. 6 (c) is each section positional relationship in another fingerprint identification device provided by the embodiments of the present application
Schematic diagram.
Fig. 7 (a) to Fig. 7 (f) is each section positional relationship in another fingerprint identification device provided by the embodiments of the present application
Schematic diagram.
Fig. 8 is a kind of schematic diagram of linear polarization structure provided by the embodiments of the present application.
Fig. 9 (a) to Fig. 9 (b) is each section positional relationship in another fingerprint identification device provided by the embodiments of the present application
Schematic diagram.
Figure 10 is the schematic block diagram according to the electronic equipment of the embodiment of the present application.
Specific embodiment
Below in conjunction with attached drawing, technical solutions in the embodiments of the present application is described.
It should be understood that the embodiment of the present application can be applied to optical fingerprint systems, including but not limited to optical finger print identification system
System and the product being imaged based on optical finger print, the embodiment of the present application are only illustrated by taking optical fingerprint systems as an example, but should not be right
The embodiment of the present application constitutes any restriction, and the embodiment of the present application is equally applicable to other systems etc. for using optical image technology.
It should be noted that for ease of understanding, in embodiments illustrated below, identical structure uses identical attached drawing
Label, and for sake of simplicity, omit to mutually isostructural detailed description.
As a kind of common application scenarios, optical fingerprint systems provided by the embodiments of the present application can be applied in intelligent hand
Machine, tablet computer and other with the mobile terminal of display screen or other terminal devices；More specifically, being set in above-mentioned terminal
In standby, fingerprint identification device can be specially optical finger print device, can be set regional area below display screen or
Whole region, to form (Under-display) optical fingerprint systems under screen.Alternatively, the fingerprint identification device can also be with
Inside some or all of display screen for being integrated to the terminal device, to form (In-display) optical finger print system in screen
System.
The structural schematic diagram for the terminal device that can be applicable in for the embodiment of the present application as shown in Figure 1, the terminal device 10
Including display screen 120 and optical finger print device 130, wherein the optical finger print device 130 is arranged under the display screen 120
The regional area of side.The optical finger print device 130 includes optical fingerprint sensor, and the optical fingerprint sensor includes having
The induction arrays 133 of multiple optical sensor units 131,133 region of induction arrays or its induction region are described
The fingerprint detection region 103 of optical finger print device 130.As shown in Figure 1, the fingerprint detection region 103 is located at the display screen
Among 120 display area.In a kind of alternate embodiment, other positions can also be arranged in the optical finger print device 130,
Such as the non-transparent region in edge of the side or the terminal device 10 of the display screen 120, and by light path design by
The optical signal of at least partly display area of the display screen 120 directs into the optical finger print device 130, so that described
Fingerprint detection region 103 is physically located the display area of the display screen 120.
It should be appreciated that the area in the fingerprint detection region 103 can be with the induction arrays of the optical finger print device 130
Area it is different, such as example, by the light path design of lens imaging or other light path designs, the optics can be made to refer to
The area in the fingerprint detection region 103 of line device 130 is less than the area of 130 induction arrays of optical finger print device.At other
It substitutes in implementation, the fingerprint detection region 103 of the optical finger print device 130 can also be designed to and the optics
The area of the induction arrays of fingerprint device 130 is almost the same.
Therefore, user is when needing to be unlocked the terminal device or other fingerprint authentications, it is only necessary to
By finger pressing in the fingerprint detection region 103 for being located at the display screen 120, it can realize that fingerprint inputs.Since fingerprint is examined
Surveying can realize in screen, therefore fingerprint is arranged without the special reserved space in its front in terminal device 10 using the above structure
Key (such as Home key), so as to which using screen scheme comprehensively, i.e., the display area of the described display screen 120 can extend substantially
To the front of entire terminal device 10.
As a kind of optional implementation, as shown in Figure 1, the optical finger print device 130 includes light detecting portion 134
With optical module 132, the light detecting portion 134 includes the induction arrays and the reading with induction arrays electric connection
Sense circuit and other auxiliary circuits can be produced on a chip (Die), such as optical imagery core by semiconductor technology
Piece or optical fingerprint sensor, the induction arrays are specially optical detector (Photo detector) array comprising more
A optical detector in array distribution, the optical detector can be used as optical sensor unit as described above；The optics
Component 132 can be set in the top of the induction arrays of the light detecting portion 134, can specifically include filter layer
(Filter), optical waveguide layer or optical path guide structure and other optical elements, the filter layer, which can be used for filtering out, penetrates finger
Environment light, and the optical waveguide layer or optical path guide structure are mainly used for being directed to institute from the reflected reflected light of finger surface
It states induction arrays and carries out optical detection.
In specific implementation, the optical module 132 can be encapsulated in the same optics with the light detecting portion 134 and refer to
Line component.For example, the optical module 132 can be encapsulated in the same optical finger print chip with the optical detecting parts 134,
The optical module 132 can also be arranged in the chip exterior where the light detecting portion 134, than optics group as will be described
Part 132 is fitted in above the chip, or the subelement of the optical module 132 is integrated among said chip.
As a kind of optional embodiment, the display screen 120 can use the display screen with spontaneous light display unit,
Such as Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) display screen or micro-led
(Micro-LED) display screen.For using OLED display screen, it is aobvious that the optical finger print device 130 can use the OLED
Display screen 120 is located at the excitation that the display unit (i.e. OLED light source) in the fingerprint detection region 103 detects as optical finger print
Light source.When the pressing of finger 140 is at the fingerprint detection region 103, display screen 120 is to 103 top of the fingerprint detection region
Target finger 140 issue light beam 111, the light 111 the surface of finger 140 reflect to form reflected light or pass through institute
It states 140 scattering-in of finger and forms scattering light, in the related patent applications, for ease of description, above-mentioned reflected light and scattering light
It is referred to as reflected light.Since the ridge (ridge) and valley (valley) of fingerprint are different for the albedo of light, from finger
The reflected light 151 of line ridge and reflected light 152 from fingerprint valley have different light intensity, reflected light after optical module 132,
Corresponding electric signal, i.e. fingerprint detection signal are received and converted to by the induction arrays 134 in optical finger print device 130；Base
Fingerprint image data can be obtained in the fingerprint detection signal, and can be verified with further progress fingerprint matching, thus
Optical finger print identification function is realized in the terminal device 10.
In other embodiments, it should be appreciated that in specific implementation, the terminal device 10 further includes transparency protected
Cover board, the cover board can be glass cover-plate or sapphire cover board, be located at described in the top of the display screen 120 and covering
The front of terminal device 10.Because in the embodiment of the present application, so-called finger pressing actually refers in the display screen 120
Press the protective layer of the cover board or the covering cover board above the display screen 120.
It is also understood that terminal device 1 can also include circuit board 150, circuit board setting is filled in the optical finger print
Set 130 lower section.Optical finger print device 130 can be bonded on the circuit board 150 by gum, and passes through pad and metal
Wire bonding and the circuit board 150, which are realized, to be electrically connected.Optical finger print device 130 can be realized by circuit board 150 and other
The electrical interconnection and signal transmission of the other elements of peripheral circuit or terminal device 1.For example, optical finger print device 130 can be with
By the control signal of the processing unit of 150 receiving terminal apparatus 1 of circuit board, and can also will be come from by circuit board 150
The fingerprint detection signal of optical finger print device 130 is exported to the processing unit of terminal device 1 or control unit etc..
On the other hand, in certain embodiments, the optical finger print device 130 can only include an optical finger print sensing
Device, the area in the fingerprint detection region 103 of optical finger print device 130 is smaller at this time and position is fixed, therefore user is referring to
Line needs for finger to be pressed into the specific position in the fingerprint detection region 103 when inputting, otherwise optical finger print device 130 may
Fingerprint image can not be collected and cause user experience bad.In other alternate embodiments, the optical finger print device 130 can
To specifically include multiple optical fingerprint sensors；The multiple optical fingerprint sensor can be disposed side by side on by connecting method
The lower section of the display screen 120, and the induction region of the multiple optical fingerprint sensor collectively forms the optical finger print dress
Set 130 fingerprint detection region 103.In other words, the fingerprint detection region 103 of the optical finger print device 130 may include
Multiple subregions, each subregion correspond respectively to the induction region of one of optical fingerprint sensor, thus by the light
The fingerprint collecting region 103 of fingerprint device 130 can extend to the main region of the lower half portion of the display screen, that is, extend
To the usual pressing area of finger, to realize that blind input by formula fingerprint operates.Alternatively, when the optical fingerprint sensor number
When measuring enough, the fingerprint detection region 103 can be extended to half of display area even entire display area, to realize
Half screen or full frame fingerprint detection.
It should also be understood that in the embodiment of the present application, the induction arrays in optical finger print device are referred to as pixel array,
Optical sensor unit or sensing unit in induction arrays are alternatively referred to as pixel unit.
It should be noted that the optical finger print device in the embodiment of the present application be referred to as optical finger print identification mould group,
Fingerprint identification device, fingerprint recognition mould group, fingerprint mould group, fingerprint acquisition device etc., above-mentioned term can be replaced mutually.
Fig. 2 is a kind of schematic diagram of fingerprint identification device 10 provided by the embodiments of the present application, as shown in Fig. 2, institute
It states fingerprint identification device 10 and is set to 120 lower section of display screen, the fingerprint identification device 10 is used to receive by finger reflection
Optical signal is simultaneously converted to electric signal and carries out fingerprint recognition.The display screen 120 is OLED display screen, including cover board 121, and circle is inclined
Vibration piece 122, display component 124 and glass substrate 126.
Wherein, the display component 124 includes organic luminous layer 125, and the organic luminous layer 125 is for cooperating display to drive
Dynamic circuit realizes display function, for example, the organic luminous layer 125 can be using low-temperature polysilicon silicon technology (low
Temperature poly-silicon, LTPS) made of OLED organic luminous panel, there are multiple light emitting pixel units, it is raw
It is longer than in the glass substrate 126.The circular polarizing disk 122 may include linear polarizer and quarter wave plate, and linear polarizer is set to
Above quarter wave plate, for inhibiting reflection of the display screen 120 to environment light, and then higher display contrast is realized.The cover board
121 can be arranged on circular polarizing disk 122 by glue-line, for protecting the display screen 120.Optical fingerprint sensor 10 is placed
Or it is fitted in the bottom of glass substrate 126, it is possible thereby to locally realization or the full frame realization screen in the display area of display screen
Lower optical finger print identification.
Specifically, as shown in Fig. 2, the screen light that the organic luminous layer 125 in luminescence component 124 issues, by circular polarization
After 122 light intensity attenuation of piece, after formation reflected light signal again passes by circular polarizing disk 122 after the reflection of finger 140, light intensity is again
Decaying forms the fingerprint optical signal 101 of circular polarization state, after display component 124 and glass substrate 126, by fingerprint identification device
10 receive.The fingerprint optical signal 101 carries finger print information, carries out fingerprint recognition for fingerprint identification device 10.
At the same time, the first stray light 102 and pass through inside display component that the organic luminous layer 125 issues downwards
Circuit layer or other structures reflection or scattering formed other stray lights 103 can also pass through the directly quilt of glass substrate 126
The fingerprint identification device 10 receives.Since the first stray light 102 is that organic luminous layer 125 is directly sent out to fingerprint identification device 10
Natural light out does not carry out light intensity attenuation by the processing of circular polarizing disk 122 in display screen, has big light intensity and can wrap
Include the light of various polarization directions.And other stray lights 103 are the optical signal of each laminated construction reflection or scattering in display screen 120,
Polarization direction is not easy to filter out in a jumble, and also without carrying out light intensity attenuation by the processing of circular polarizing disk 122, thus other spuious
The light intensity of light 103 is equally larger.
Therefore, the fingerprint identification device 10 receives the first stray light 102, other stray lights 103 and fingerprint light simultaneously
When signal 101, the light intensity of the fingerprint optical signal 101 for fingerprint recognition is smaller, the accounting in the light intensity of received total optical signal
It is small, thus the variation of the light intensity in fingerprint ridge and fingerprint valley is faint in total optical signal, causes to be difficult to out fingerprint signal.
In addition, the first stray light 102 also carries the information of light emitting pixel unit, other stray lights 103 also carry display
Each lamination structural information in screen 120 receives the first stray light 102, other stray lights 103 in the fingerprint identification device 10 simultaneously
And when fingerprint optical signal 101, the interference information that the first stray light 102 and other stray lights 103 carry is easy to fingerprint recognition
Device 10 interferes the imaging of fingerprint optical signal 101, to influence the quality of fingerprint image, significantly limits fingerprint knowledge
The fingerprint recognition performance of other device 10.
Since above-mentioned first stray light 102 and other stray lights 103 are without circular polarizing disk 122, the first stray light
102 and the unbiased polarization state of other stray lights 103, and fingerprint optical signal is the circularly polarized light by circular polarizing disk 122, fingerprint optical signal
It is different from the polarization state of spuious optical signal, be based on this, the application provides a kind of fingerprinting scheme, by setting quarter wave plate and
Linear polarization structure makes stray light light intensity decreasing after quarter wave plate and linear polarization structure, and fingerprint optical signal passes through quarter wave plate
It is almost unchanged with light intensity after linear polarization structure, to increase accounting of the fingerprint optical signal in total optical signal, reduce stray light
Influence of the signal to fingerprint imaging improves the quality of fingerprint image and the recognition performance of fingerprint identification device.
Hereinafter, the fingerprint identification device of the embodiment of the present application is discussed in detail in conjunction with Fig. 3 to Fig. 9.
Fig. 3 is a kind of schematic diagram of fingerprint identification device 20 provided by the embodiments of the present application, for being arranged in electricity
120 lower section of display screen of sub- equipment.
As shown in figure 3, the fingerprint identification device 20 may include:
Lens subassembly 300, including at least one optical lens；
Light detection array 400 is set to 300 lower section of lens subassembly；
Quarter wave plate 210 and linear polarization structure 220 are set to the display screen 120 between the light detection array 400
Optical path in, the quarter wave plate 210 is set to 220 top of the linear polarization structure；
Wherein, the light detection array 400 is for receiving optical signal by the quarter wave plate 210, the linear polarization structure
220 and the lens subassembly 300 linearly polarized light signal, the optical signal include via finger reflect or scatter and return finger
Line optical signal, for detecting the finger print information of the finger.
Specifically, the lens subassembly 310 is the lens group for including at least one spherical surface or aspherics lens, is used
In light detection array 400 below will be converged to from the reflected reflected light of finger, so that light detection array 400 can be with
It is imaged based on the reflected light, to obtain the fingerprint image of the finger.Optionally, the lens subassembly 300 is extremely
It can also be formed with pin hole in the optical path of a few optical lens, the pin hole can expand the finger with fit lens component 300
The visual field of line identification device 20, to improve the fingerprint imaging effect of fingerprint identification device 20.
Optionally, the lens subassembly 300 can be arranged under the display screen 120 by fixed device, such as bracket
Side, and be arranged above the light detection array 400.
Optionally, in the embodiment of the present application, the light detection array 400 can be the induction arrays 133 in Fig. 1.
The light detection array 400 can be the pixel array of multiple pixel units composition, and the light detection array 400 can
One is produced on by semiconductor technology with the reading circuit and other auxiliary circuits that are electrically connected with the light detection array 400
In chip.The multiple pixel unit is for receiving by the quarter wave plate 210, the linear polarization structure 220 and the lens
The linearly polarized light signal of component 300, and the linearly polarized light signal processing is obtained into electric signal, optionally, the multiple pixel list
Member can use photodiode (photo diode), metal oxide semiconductor field effect tube (metal oxide
Semiconductor field effect transistor, MOSFET) etc. devices.Optionally, the multiple pixel unit pair
In special wavelength light luminous sensitivity with higher and higher quantum efficiency, in order to detect the optical signal of respective wavelength.
Specifically, the quarter wave plate 210, which can be, enables to generate additional light path between mutually perpendicular two light vibration
(the i.e. optical device of phase difference j).Wherein, linearly polarized light is synthesized when Δ j=2k π (k is integer)；Δ j=(2k+1) π/
2, and circularly polarized light is synthesized when θ=45 °.Quarter wave plate 210 is referred to as quarter-wave plate (quarter-wave
plate).Quarter wave plate 330 can be the birefringent chip with precise thickness.Such as quartz, calcite or mica etc. are birefringent
Chip, optical axis are parallel with wafer surface.
The received incident light of quarter wave plate 210 is broken down into ordinary light (o light) and abnormal light (e light), and crystal is to two kinds of light
Refractive index is different, and quarter wave plate 210 can make to generate additional 1/4 optical path difference between mutually perpendicular two light (o light and e light).For example, false
If linearly polarized light is incident on quarter wave plate 210, and θ=45 °, then the light for being pierced by quarter wave plate is circularly polarized light；Conversely, circularly polarized light
By becoming linearly polarized light after quarter wave plate 210.When linearly polarized light vertical incidence quarter wave plate, and the light of the polarization of light and mica
Axial plane (vertical natural parting plane) is into θ angle, at elliptically polarized light after outgoing.Especially when θ=45 °, emergent light is circularly polarized light.
When optical signal axis the smallest by refractive index in quarter wave plate 210, spread speed is most fast, in the quarter wave plate 210
The smallest axis of refractive index is the fast axle of the quarter wave plate 210, and opposite, the maximum axis of refractive index is institute in the quarter wave plate 210
State the slow axis of quarter wave plate 210.Optionally, the quarter wave plate 210 can also can make mutually perpendicular two light (o light and e to be other
Light) between generate the micro-structure of additional 1/4 optical path difference.
Specifically, the selection of the polarization state of High Extinction Ratio may be implemented in the linear polarization structure 220, can by natural light or
Circularly polarized light is converted to linearly polarized light.The i.e. described linear polarization structure 220 can permit direction of vibration and be parallel to its light transmission axis direction
Linearly polarized light pass through, while absorbing direction of vibration perpendicular to the linearly polarized light of device light transmission axis direction.Specifically, the linear polarization
Structure can be linear polarizer (polarizer, PL), polarizing coating or other micro-structures with polarization state selection function.
In the embodiment of the present application, quarter wave plate 210 is set to the top of linear polarization structure 220, and the two be all set in it is described
Display screen 120 is into the optical path between the light detection array 400.As long as meeting quarter wave plate 210 in linear polarization structure 220
Top, quarter wave plate 210 and linear polarization structure 220 can be set in the display screen 120 between the light detection array 400
Optical path in any position.
Optionally, the quarter wave plate 210 and the linear polarization structure 220 can be by fixed device settings described aobvious
Any position of the display screen 120 into the optical path between light detection array 400.
Optionally, in fingerprint identification device 20, the lower section of display screen 120, the line is arranged in the quarter wave plate 210
Polarization structure 220 is arranged below the quarter wave plate, and the optical module 300 is arranged below the linear polarization structure 220,
The light detection array 400 is arranged below the optical module 300.
In a kind of possible embodiment, as shown in figure 3, the quarter wave plate 210 and the linear polarization structure 220 collect
At circular polarization structure 230 is set as, for example, the quarter wave plate 210 and the linear polarization structure 220 pass through transparent optical glue material
It bonds together, forms circular polarization structure 230.The circular polarization structure 230 is arranged below the display screen 120, the light
It learns component 300 and the light detection array 400 is successively set on the lower section of the circular polarization structure 230.
In alternatively possible embodiment, the quarter wave plate 210 can also be separated with the linear polarization structure 220
Setting, there are certain the air gaps between the quarter wave plate 210 and the polarization structure 230.
In the embodiment shown in fig. 3, quarter wave plate 210 receives the optical signal of screen lower transfer, which includes miscellaneous
Astigmatism 206 and the first fingerprint light letter that the circular polarization state of circular polarizing disk 122 in display screen 120 is reflected and passed through by finger 140
Numbers 204, wherein stray light 206 is the anti-of each lamination in screen light or display screen that natural light in environment, display screen issue
One of light or a variety of is penetrated, and the reflected light of each lamination is not have partially in natural light, screen natural light or display screen
The optical signal of polarization state, it is different from the first fingerprint optical signal 204 of circular polarization state.
First fingerprint optical signal 204 of the circular polarization state forms the second fingerprint of linear polarization after quarter wave plate 210
Optical signal 205, the optical signal light intensity after quarter wave plate is constant, therefore, the light intensity and fingerprint light of the second fingerprint optical signal 205
The light intensity of signal 204 is identical.The second fingerprint optical signal 205 forms the third of linear polarization after linear polarization structure 220
Fingerprint optical signal, the light intensity of the third fingerprint optical signal are not more than the light intensity of the fingerprint optical signal 204, and specifically, third refers to
The light intensity of line optical signal depends on the angle of the fast axle of the quarter wave plate 210 and the light transmission shaft of the linear polarization unit 220, special
Not, when the light transmission shaft of the fast axle of the quarter wave plate 210 and linear polarization structure 220 angle at 45 °, the second fingerprint light
The light energy after the linear polarization structure 220 of signal 205 does not lose, therefore, the light intensity of the third fingerprint optical signal and institute
The light intensity for stating the second fingerprint optical signal 205 and the first fingerprint optical signal 204 is equal.
Optionally, as shown in figure 3, the display screen 120 can be the OLED display screen in Fig. 2, comprising: cover board 121, circle
Polarizing film 122, display component 124 and glass substrate 126.Wherein, the circular polarizing disk 122 may include the first linear polarizer
1221 and first quarter wave plate 1222, and in display screen 120, which is located at first quarter wave plate 1222
Top.
Specifically, as shown in figure 4, the organic luminous layer 125 in the display component 124 issues no polarization to finger upwards
First screen light 201 of state.First screen light 201 of the unbiased polarization state passes through (i.e. the first quarter wave plate of circular polarizing disk 122
1222 and first linear polarizer 1221) after, light intensity halves and is formed the first linearly polarized light 202, which passes through
After the scattering of finger 140 or reflection, since fingerprint rough surface is to the depolarization of light, the first fingerprint optical signal of unbiased polarization state is formed
203, the first fingerprint optical signal 203 of unbiased polarization state light again after the first linear polarizer 1221 in circular polarizing disk 122
Halve by force, form the first fingerprint optical signal of linear polarization, the first fingerprint optical signal of the linear polarization passes through the first quarter wave plate
Afterwards, the first fingerprint optical signal 204 of circular polarization state is formed, the fingerprint optical signal 204 of the circular polarization state passes through in display screen 120
Other film layer structures form the second fingerprint optical signal of linear polarization after the quarter wave plate 210 in fingerprint identification device 20
205, when the light transmission shaft of the fast axle of the quarter wave plate 210 and linear polarization structure 220 angle at 45 °, the second of the linear polarization
Fingerprint optical signal 205 still exports the second fingerprint light letter of linear polarization by after linear polarization structure 220, light intensity is unattenuated
Numbers 205.
In addition, as shown in Figure 4, each lamination in the screen light and display screen that finger issues of organic luminous layer 125
Reflected light formed stray light 206.The stray light 206 is the optical signal of unbiased polarization state, by quarter wave plate 210 and linear polarization knot
After structure 220, the second linearly polarized light 207 is formed, the light intensity of second linearly polarized light 207 is no more than 206 light intensity of stray light
1/2。
Optionally, the stray light 206 may include the first stray light 102 and the other stray lights 103 in Fig. 2, described
First fingerprint optical signal 204 can be the fingerprint optical signal 101 in Fig. 2.
In conclusion the first fingerprint optical signal 204 of stray light 207 and circular polarization state passes through quarter wave plate 210 and linear polarization
After structure 220, the light intensity attenuation half of stray light 207, and the light intensity attenuation of the first fingerprint optical signal 204 is seldom or constant,
Therefore in the received polarized light signal of light detection array 400, the fingerprint optical signal accounting for fingerprint recognition is improved, and is reduced spuious
Influence of the optical signal to fingerprint imaging, to improve the quality of fingerprint image and the recognition performance of fingerprint identification device.
In the embodiment of the present application, the quarter wave plate 210 is with the linear polarization structure 220 in display screen 120 to light detection
There are many positional relationships in the optical path of array 400.
Optionally, the quarter wave plate 210 and 220 whole installation of linear polarization structure, i.e. the two are all set in:
Between the display screen 120 and the lens subassembly 300 perhaps in the lens subassembly 300 or the lens
Between component 300 and the light detection array 400.
In a kind of possible embodiment, the quarter wave plate 210 is wholy set in institute with the linear polarization structure 220
It states between display screen 120 and the lens subassembly 300.For example, as shown in Fig. 5 (a), the quarter wave plate 210 and the linear polarization
Structure 220, which can integrate, is set as circular polarization structure 230, the circular polarization structure 230 be set to the display screen 120 with it is described
Between lens subassembly 300.Optionally, the circular polarization structure 230 is set to 120 lower surface of display screen or the lens
The upper surface of component 300.
Optionally, it can be deposited between the two with separately positioned between the quarter wave plate 210 and the linear polarization structure 220
In certain the air gap.In a kind of possible embodiment, such as shown in Fig. 6 (a), the quarter wave plate 210 is arranged in institute
The lower surface of display screen 120 is stated, the optical lens of the top in the lens subassembly 300 is arranged in the linear polarization structure 220
Upper surface, the linear polarization structure 220 can be horizontal structure, the portion of upper surface of optical lens and linear polarization structure 220
Contact.
In alternatively possible embodiment, the quarter wave plate 210 is integrally provided in the linear polarization structure 220
In multiple optical lenses of the lens subassembly 300 between any two optical lens.For example, as shown in Fig. 5 (b), it is described
Mirror assembly 300 includes two optical lenses, and the quarter wave plate 210 can integrate with the linear polarization structure 220 is set as circle partially
Vibration structure 230, the circular polarization structure 230 are set between two optical lenses.Optionally, the circular polarization structure 230 is set
It is placed in the surface of any one optical lens in optical module.
It optionally, can be with separately positioned in two optics between the quarter wave plate 210 and the linear polarization structure 220
Between lens.Such as shown in Fig. 6 (b), the quarter wave plate 210 is disposed over the lower surface of optical lens, the linear polarization knot
Structure 220 is arranged below the upper surface of optical lens, wherein the part of the surfaces of two optical lenses and linear polarization structure 220 and
The surface of quarter wave plate contact or two optical lenses is contacted with linear polarization structure 220 and quarter wave plate completely.
In alternatively possible embodiment, the quarter wave plate 210 is integrally provided in the linear polarization structure 220
Between the lens subassembly 300 and the light detection array 400.For example, as shown in Fig. 5 (c), the quarter wave plate 210 with it is described
Linear polarization structure 220, which can integrate, is set as circular polarization structure 230, and the circular polarization structure 230 is set to the lens subassembly
Between 300 and the light detection array 400.Optionally, the circular polarization structure 230 is set under the lens subassembly 300
Surface or the upper surface of the light detection array 400.
It optionally, can be with separately positioned in the lens between the quarter wave plate 210 and the linear polarization structure 220
Between component 300 and the light detection array 400.Such as shown in Fig. 6 (c), the quarter wave plate 210 is arranged in the lens group
The upper of the light detection array 400 is arranged in the lower surface of the optical lens of bottom in part 300, the linear polarization structure 220
Surface.The quarter wave plate 210 can be horizontal structure, and the portion lower surface of optical lens is contacted with the quarter wave plate 210.
Optionally, the quarter wave plate 210 is not to be wholy set in display screen 120 to light to examine with the linear polarization structure 220
The identical position in 400 optical path of array is surveyed, but is respectively arranged between the display screen 120 and the lens subassembly 300,
Different positions in the lens subassembly 300, between the lens subassembly 300 and the light detection array 400, in these three positions
It sets, and quarter wave plate 210 is set to 220 top of linear polarization structure.
In a kind of possible embodiment, as shown in Fig. 7 (a)~Fig. 7 (b), the quarter wave plate 210 is set to institute
It states between display screen 120 and the lens subassembly 300；Optionally, as shown in Fig. 7 (a), the linear polarization structure 220 is set to
In the lens subassembly 300 between two optical lenses, it should be appreciated that when lens subassembly 300 includes more than two optical lenses
When, the linear polarization structure 220 can be set in the lens subassembly 300 between any two optical lens.Optionally, such as
Shown in Fig. 7 (b), the linear polarization structure 220 is set between the lens subassembly 300 and the light detection array 400.
Specifically, in a kind of possible embodiment, as shown in Fig. 7 (c)~Fig. 7 (d), the quarter wave plate 210 is set
It is placed in 120 lower surface of display screen；Optionally, as shown in Fig. 7 (c), the linear polarization structure 220 is set to the lens group
In part 300 in two optical lenses in the upper surface of lower section optical lens or the lens subassembly 300 in two optical lenses
The lower surface of top optical lens, it should be appreciated that when lens subassembly 300 includes more than two optical lenses, the linear polarization
The surface of any optical lens in the lens subassembly 300 can be set in structure 220.Optionally, described as shown in Fig. 7 (d)
Linear polarization structure 220 is set to the upper surface of the light detection array 400.
In alternatively possible embodiment, as shown in Fig. 7 (e), the quarter wave plate 210 is set to the lens
In component 300, the linear polarization structure 220 is set between the lens subassembly 300 and the light detection array 400.
Specifically, in a kind of possible embodiment, as shown in Fig. 7 (f), the quarter wave plate 210 is set to described
In mirror assembly 300 in two optical lenses lower section optical lens upper surface or the lens subassembly 300 in two optical lens
The lower surface of top optical lens, the linear polarization structure 220 are set to the upper surface of the light detection array 400 in mirror.It answers
Understand, when lens subassembly 300 includes multiple optical lenses, the quarter wave plate 210 be can be set in the lens subassembly 300
In any optical lens surface.
Optionally, the linear polarization structure 220 is a kind of micro structure array for realizing polarization state selection, is coupled by grating
Method come realize High Extinction Ratio polarization state selection.
Optionally, described as shown in figure 8, the linear polarization structure 220 of the micro structure array is a kind of metal grating structure
Micro-structure is metal grating grizzly bar, and micro structure array is periodic grating grizzly bar array, is placed in a plane.It is optional
Ground, as shown in figure 8, X-axis of multiple grating grizzly bars in plane is placed in parallel, each grating grizzly bar is parallel to Y-axis.Wherein, partially
Shake direction and the orthogonal optical signal of grating grizzly bar, i.e. the polarization direction optical signal parallel with X-axis (hereinafter referred to as X polarization
Direction optical signal) pass through metal grating when, can in grating grizzly bar surface excitation plasmon, because of the resonance between plasmon
Effect causes the polarization direction the X optical signal to have stronger transmitance；Conversely, the light that polarization direction and grating grizzly bar are parallel to each other is believed
Number, i.e., the polarization direction optical signal parallel with Y-axis (the hereinafter referred to as polarization direction Y optical signal) cannot produce on grating grizzly bar surface
Raw plasmon, the polarization direction the Y optical signal polarized light signal are completely absorbed, cannot be by metal grating, thus finally
Realize the selection of polarization state.
Optionally, the linear polarization structure 220 of the micro structure array can be grown on described by manufacture of semiconductor technique
The top of multiple pixel units in light detection array 400.For example, passing through atomic layer deposition, magnetron sputtering plating, electron beam evaporation
The methods of plated film, electron beam lithography prepare metal grating structure above multiple pixel units in the light detection array 400.
Optionally, the linear polarization structure 220 of the micro structure array can be integrated in together with the light detection array 400
In optical sensor.
Optionally, in a kind of possible embodiment, the quarter wave plate may be that a kind of can make mutually perpendicular two
The micro-structure of additional 1/4 optical path difference is generated between light (o light and e light).The quarter wave plate micro-structure can also be prepared using micro-nano technique
On the linear polarization structure 220 of above-mentioned micro structure array, it is integrated in optical sensor together with linear polarization structure 220.
Optionally, as shown in Fig. 9 (a), the fingerprint identification device 20 can also include filter plate 500, non-for filtering
The optical signal of target wave band, through the optical signal (i.e. the optical signal of wave band needed for fingerprint image acquisition) of target wave band.
Optionally, the display screen 120 is arranged in the optical path between the light detection array 400 in the filter plate 500
In.
Optionally, the filter plate 500 can be set in Fig. 5 (a)~Fig. 5 (c), Fig. 6 (a)~Fig. 6 (c) and Fig. 7 (a)
Any position of 120 lower surface of display screen to 400 upper surface of light detection array in~Fig. 7 (f).
Optionally, the filter plate 500 can by such as frame glue setting of fixed device in the display screen 120 to described
In optical path between light detection array 400.
Optionally, the filter plate 500 is that optical wavelength ends filter plate, for filtering out the optical signal of specific band, favorably
In the influence for the ambient light signal for reducing specific band, so as to promote fingerprint recognition performance.The specific band can be
Infrared band, the filter plate 500 can be infrared fileter.
In the embodiment of the present application, increase filter plate 500 in the optical path of display screen 120 and light detection array 400, it can be with
Non- fingerprint optical signal in optical signal is further filtered out, for example, infrared light or other jammr bands in filtering environmental, further
Accounting of the fingerprint optical signal for being used for fingerprint recognition in the received total optical signal of light detection array 400 is improved, fingerprint is improved
The quality of image and the recognition performance of fingerprint identification device.
It should be understood that the filter plate 500 can be set in the quarter wave plate 210, the linear polarization structure 220, the light
The either above or below of at least one of component 300 is learned, the embodiment of the present application does not limit this.
It should also be understood that the filter plate 500 can be with the display screen 120, the quarter wave plate 210, the linear polarization knot
At least one of structure 220, the optical module 300, the light detection array 400 are separately positioned or integrally disposed.
Specifically, when separately positioned, the filter plate 500 and the display screen 120, the quarter wave plate 210, the line
Have between certain air between at least one of polarization structure 220, the optical module 300, described light detection array 400
Gap；When integrally disposed, the filter plate 500 is set to the display screen 120, the quarter wave plate 210, the linear polarization structure
220, the surface of at least one of the optical module 300, described light detection array 400, each other without the air gap.
Optionally, in a kind of possible embodiment, the surface of the light detection array is arranged in the filter plate 500
It can be integrated in optical fingerprint sensor together with light detection array 400, specifically, can be using evaporation process in the light
Plated film, which is carried out, above detection array forms the filter plate 500.
Optionally, as shown in Fig. 9 (b), the light is arranged in the linear polarization structure 220 in the filter plate 500 together
The surface for detecting array, is integrated in optical fingerprint sensor, the filter plate 500 can position together with light detection array 400
In the either above or below of the linear polarization structure 220, specifically, using evaporation process above the light detection array successively
It carries out plated film and forms the filter plate 500 and linear polarization structure 220.
Optionally, the filter plate 500 can also be arranged together with the linear polarization structure 220 and the quarter wave plate
On the surface of the light detection array 400, it is integrated in optical fingerprint sensor together with light detection array 400.
As shown in Figure 10, the embodiment of the present application also provides a kind of electronic equipment 2, which may include display
The fingerprint identification device 20 of screen 120 and above-mentioned application embodiment, the fingerprint identification device 20 are set to the display screen 120
Lower section.
Optionally, the display screen 120 is Organic Light Emitting Diode OLED display screen or micro-led
Micro-LED display screen includes circular polarizing disk 122 in the display screen 120, for converting circularly polarized light for linearly polarized light.
It should be understood that the specific example in the embodiment of the present application is intended merely to that those skilled in the art is helped to more fully understand
The embodiment of the present application, rather than limit the range of the embodiment of the present application.
It should be understood that the term used in the embodiment of the present application and the appended claims is only merely for the specific reality of description
The purpose for applying example, is not intended to be limiting the embodiment of the present application.For example, being made in the embodiment of the present application and the appended claims
The "an" of singular, " above-mentioned " and "the" are also intended to including most forms, unless context clearly shows that other
Meaning.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member can be realized with electronic hardware, computer software, or a combination of the two, can in order to clearly demonstrate hardware and software
Interchangeability generally describes each exemplary composition and step according to function in the above description.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
Scope of the present application.
In several embodiments provided herein, it should be understood that disclosed system, device can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only
Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be tied
Another system is closed or is desirably integrated into, or some features can be ignored or not executed.In addition, shown or discussed phase
Mutually between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication of device or unit
Connection is also possible to electricity, mechanical or other form connections.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.Some or all of unit therein can be selected to realize the embodiment of the present application scheme according to the actual needs
Purpose.
It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit
It is that each unit physically exists alone, is also possible to two or more units and is integrated in one unit.It is above-mentioned integrated
Unit both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the application
Portion or part steps.And storage medium above-mentioned include: USB flash disk, mobile hard disk, read-only memory (read-only memory,
ROM), random access memory (random access memory, RAM), magnetic or disk etc. are various can store program
The medium of code.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should all cover within the scope of protection of this application.Therefore, the protection scope of the application should be with right
It is required that protection scope subject to.
Claims (17)
1. a kind of fingerprint identification device, which is characterized in that for being set to below the display screen of electronic equipment, comprising:
Lens subassembly, including at least one optical lens；
Light detection array is set to below the lens subassembly；
Quarter wave plate and linear polarization structure are set to the display screen into the optical path between the light detection array, and described 1/4
Wave plate is set to the top of the linear polarization structure；
Wherein, the light detection array is for receiving optical signal by the lens subassembly, the quarter wave plate and the linear polarization
The linearly polarized light signal of structure, the optical signal includes the fingerprint optical signal for reflecting or scattering via finger and return, for examining
Survey the finger print information of the finger.
2. fingerprint identification device according to claim 1, which is characterized in that the fast axle of the quarter wave plate and the line are inclined
The light transmission shaft angle at 45 ° for structure of shaking.
3. fingerprint identification device according to claim 2, which is characterized in that include circular polarizing disk, institute in the display screen
State fingerprint optical signal be through the finger reflects or scatters return after, by the circularly polarized light signal of the circular polarizing disk.
4. fingerprint identification device according to claim 3, which is characterized in that the quarter wave plate and the linear polarization structure it
Between there are the air gaps.
5. fingerprint identification device according to claim 3, which is characterized in that the quarter wave plate and the linear polarization structure collection
At being set as circular polarization structure.
6. fingerprint identification device according to any one of claims 1-5, which is characterized in that the quarter wave plate with it is described
Linear polarization structure is wholy set in:
Between the display screen and the lens subassembly perhaps in the lens subassembly or the lens subassembly and the light
It detects between array.
7. fingerprint identification device according to claim 6, which is characterized in that the quarter wave plate and the linear polarization structure
It is wholy set in:
The lower surface of the display screen perhaps surface of any of described lens subassembly optical lens or the light detection
The surface of array.
8. fingerprint identification device described in any one of -4 according to claim 1, which is characterized in that the quarter wave plate is set to
Between the display screen and the lens subassembly, the linear polarization structure is set in the lens subassembly or the lens
Between component and the light detection array；
Alternatively, the quarter wave plate is set in the lens subassembly, the linear polarization structure is set to the lens subassembly and institute
It states between light detection array.
9. fingerprint identification device according to claim 8, which is characterized in that the quarter wave plate is set to the display screen
Lower surface, the linear polarization structure be set to any of lens subassembly optical lens surface or the light inspection
Survey the surface of array；
Alternatively, the quarter wave plate is set to the surface of any of lens subassembly optical lens, the linear polarization structure is set
It is placed in the surface of the light detection array.
10. fingerprint identification device according to any one of claims 1-5, which is characterized in that the linear polarization structure is
Optical microstructures array is set to the light detection array surface.
11. fingerprint identification device according to claim 10, which is characterized in that multiple light in the optical microstructures array
The orientation for learning micro-structure is vertical with the direction of the linearly polarized light signal.
12. fingerprint identification device according to claim 10, which is characterized in that the optical microstructures array is integrated in institute
It states in light detection array.
13. fingerprint identification device according to any one of claims 1-5, which is characterized in that the fingerprint identification device
It further include filter plate, for filtering the optical signal of non-targeted wave band, through the optical signal of target wave band.
14. fingerprint identification device according to claim 13, which is characterized in that described to be set to the display screen to described
In optical path between light detection array.
15. fingerprint identification device according to claim 14, which is characterized in that the filter plate is set to the display
In any of screen, the light detection array, the optical module optical lens, the linear polarization structure and the quarter wave plate
The surface of at least one.
16. a kind of electronic equipment characterized by comprising display screen and,
According to claim 1 to fingerprint identification device described in any one of 15；
Wherein, the fingerprint identification device is set to below the display screen.
17. electronic equipment according to claim 16, which is characterized in that the display screen is organic light-emitting diode display
Screen, including circular polarizing disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920632199.8U CN209640887U (en) | 2019-04-30 | 2019-04-30 | Fingerprint identification device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920632199.8U CN209640887U (en) | 2019-04-30 | 2019-04-30 | Fingerprint identification device and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209640887U true CN209640887U (en) | 2019-11-15 |
Family
ID=68498154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920632199.8U Active CN209640887U (en) | 2019-04-30 | 2019-04-30 | Fingerprint identification device and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209640887U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI738488B (en) * | 2020-09-01 | 2021-09-01 | 勝薪科技股份有限公司 | Fingerprint identification assembly and display device |
-
2019
- 2019-04-30 CN CN201920632199.8U patent/CN209640887U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI738488B (en) * | 2020-09-01 | 2021-09-01 | 勝薪科技股份有限公司 | Fingerprint identification assembly and display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208848221U (en) | Optical fingerprint identification device and electronic equipment | |
| US11455823B2 (en) | Under-screen fingerprint identification apparatus and electronic device | |
| CN110235143B (en) | Under-screen fingerprint recognition device and electronic equipment | |
| CN111052140B (en) | Fingerprint identification device and electronic equipment | |
| CN208888842U (en) | Fingerprint identification device and electronic equipment | |
| CN109791325A (en) | Device with peripheral taskbar display area and LCD under-screen optical sensor module for on-screen fingerprint sensing | |
| CN210605743U (en) | Optical fingerprint device and electronic equipment | |
| CN209765529U (en) | Fingerprint identification device and electronic equipment | |
| CN109496313A (en) | Fingerprint identification device and electronic equipment | |
| WO2019237872A1 (en) | Fingerprint identification apparatus and electronic device | |
| CN110741384A (en) | Fingerprint identification devices and electronic equipment | |
| CN109074495A (en) | Improve the optical sensing performance of optical sensor module under the screen for shielding upper fingerprint sensing | |
| CN109791599A (en) | Optical sensor module under the screen that fingerprint incudes on screen | |
| CN109196525A (en) | Refuse the anti-spoofing sensing of false fingerprint pattern in optical sensor module under the screen for shielding upper fingerprint sensing | |
| CN109993051A (en) | Biological characteristic imaging device and method for manufacturing biological characteristic imaging device | |
| WO2020223882A1 (en) | Fingerprint recognition device and electronic apparatus | |
| CN109844766A (en) | Optical Image Acquisition Systems and Electronics | |
| JP2019020991A (en) | Imaging apparatus, authentication apparatus, and imaging method | |
| CN112771484B (en) | Texture recognition device and manufacturing method thereof | |
| CN109840464A (en) | Electronic panel and electronic device including electronic panel | |
| CN209496381U (en) | Optical finger print identifies mould group and terminal device | |
| CN208782911U (en) | Lens assemblies, sensing devices and imaging systems | |
| CN109417080A (en) | Optical image acquisition unit, optical image acquisition device and electronic equipment | |
| CN110036395A (en) | Method, device and terminal device for fingerprint identification | |
| CN110770747B (en) | Fingerprint identification device and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |