CN109643377A - Fingerprint identification device and electronic equipment - Google Patents
Fingerprint identification device and electronic equipment Download PDFInfo
- Publication number
- CN109643377A CN109643377A CN201880002297.1A CN201880002297A CN109643377A CN 109643377 A CN109643377 A CN 109643377A CN 201880002297 A CN201880002297 A CN 201880002297A CN 109643377 A CN109643377 A CN 109643377A
- Authority
- CN
- China
- Prior art keywords
- optical
- identification device
- fingerprint
- fingerprint identification
- optics collimator
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
Abstract
The embodiment of the present application discloses a kind of fingerprint identification device and electronic equipment.The fingerprint identification device is arranged in below display screen so that its fingerprint collecting region is at least partially disposed within the display area of the display screen, the fingerprint identification device includes: supporting element, one end of the supporting element is for connecting the display screen, the other end of the supporting element is used to connect the circuit board below the fingerprint identification device, fixed structure is provided on the supporting element, the fixed structure is for fixing the optics collimator；Optical fingerprint sensor is arranged on the circuit board；Optics collimator, it is arranged on the fixed structure, so that the top of the optical fingerprint sensor is arranged in the optics collimator, and the distance between the optics collimator and the display screen and the distance between the optics collimator and the optical fingerprint sensor is made to meet the imaging demand of the optics collimator.Therefore the fingerprint identification device can be realized effective fingerprint recognition.
Description
Technical field
The invention relates to fingerprint identification technology fields, and more particularly, to a kind of fingerprint identification device and
Electronic equipment.
Background technique
With the high speed development of electronic equipment, fingerprint identification technology is increasingly paid attention to by people.For at present on the market
Common capacitance type fingerprint identification technology, is not only influenced by penetration thickness and wet finger, also to fingerprint identification device in electronics
There is larger limitation in the position placed in equipment, and influences the screen accounting of electronic equipment.
Optical fingerprint identification technology is to acquire the light that light source issues by optical fingerprint sensor to reflect in finger
The reflected light of formation carries the finger print information of finger in reflected light, to realize fingerprint recognition.It is identified compared to capacitance type fingerprint
Device, requirement of the optical fingerprint identification device to the screen thickness of electronic equipment is lower, and the position placed on an electronic device
Setting can be more flexible, and the screen accounting of electronic equipment can be improved.In order to realize these advantages, optical fingerprint identification device
In need to include the optical components such as optical fingerprint sensor and optics collimator, therefore, how these optical sections are reasonably set
Part becomes urgent problem so that optical fingerprint identification device can be realized effective fingerprint recognition.
Summary of the invention
The embodiment of the present application provides a kind of fingerprint identification device and electronic equipment, the structure of the fingerprint identification device make
It can be realized effective fingerprint recognition.
In a first aspect, providing a kind of fingerprint identification device, the fingerprint identification device is for being arranged below display screen
So that its fingerprint collecting region is at least partially disposed within the display area of the display screen, the fingerprint identification device includes:
Supporting element, one end of the supporting element is for connecting the display screen, and the other end of the supporting element is for connecting
Circuit board below the fingerprint identification device is provided with fixed structure on the supporting element, and the fixed structure is for fixing
Optics collimator；
Optical fingerprint sensor is arranged on the circuit board, for detecting the object of the fingerprint collecting overlying regions
The optical signal of reflection；
The optics collimator, setting is in the fixed structure, so that optics collimator setting refers in the optics
The top of line sensor, and make the distance between the optics collimator and the display screen and the optics collimator with
The distance between described optical fingerprint sensor meets the imaging demand of the optics collimator, and the optics collimator is used for will
Optical signal from the fingerprint collecting region is guided to the optical fingerprint sensor.
In the embodiment, it is provided with fixed structure on the supporting element of fingerprint identification device, for carrying out to optics collimator
It is fixed, so that the distance between optics collimator and display screen and the distance between optics collimator and optical fingerprint sensor
Meet the imaging requirements of the optics collimator, respectively so as to realize effective fingerprint recognition.Also, since fingerprint recognition fills
The materials such as substrate are not needed in setting, and can reduce the thickness of fingerprint identification device.
In one possible implementation, the supporting element includes two brackets, and the fixed structure is along described two
The lug boss that a bracket inner sidewall extends, wherein the optics collimator be fixed on the lug boss upper surface or under
Surface.
In one possible implementation, the fingerprint identification device further includes being arranged in the optical fingerprint sensor
The optical filter of top, the wavelength of the optical signal for selecting to be transmitted to the optical fingerprint sensor.Wherein, the optics
When collimator is fixed on the upper surface of the lug boss, the optical filter is fixed on the lower surface of the lug boss, alternatively,
The upper surface of the optical fingerprint sensor is arranged in the optical filter；Alternatively, the optics collimator be fixed on it is described
When the lower surface of lug boss, the optical filter is fixed on the upper surface of the lug boss, alternatively, the optical filter is set
It sets in the upper surface of the optical fingerprint sensor.
In one possible implementation, the optics collimator is fixed on upper surface or the following table of the lug boss
Face, comprising: the non-transparent region at the optics collimator edge is pasted onto the upper of the lug boss by opaque adhesive material
Surface or lower surface；The optical filter is fixed on the upper surface or lower surface of the lug boss, comprising: the filter side
The non-transparent region of edge is pasted onto the upper surface or lower surface of the lug boss by opaque adhesive material；The optically filtering
The upper surface of the optical fingerprint sensor is arranged in device, comprising: the optical filter is pasted by transparent adhesive material
The upper surface of the optical fingerprint sensor.
In one possible implementation, the optical fingerprint identification device is pasted onto institute by opaque adhesive material
State the lower surface of display screen.
In one possible implementation, the optical fingerprint identification device further includes conducting wire, and the conducting wire is for electricity
Connect the optical fingerprint sensor and the circuit board.
Second aspect, provides a kind of fingerprint identification device, the fingerprint identification device be arranged below display screen so that
Its fingerprint collecting region is at least partially disposed within the display area of the display screen, and the fingerprint identification device includes:
Optical fingerprint sensor is arranged in the substrate of the fingerprint identification device, for detecting the fingerprint collecting area
The optical signal of object reflection above domain；
Optics collimator is arranged above the optical fingerprint sensor, for will be from the fingerprint collecting region
Optical signal is guided to the optical fingerprint sensor, and the optics collimator is packaged together with the optical fingerprint sensor,
Or the optics collimator is passed as the component setting relatively independent with the optical fingerprint sensor in the optical finger print
Above sensor；
Wherein, the distance between the optics collimator and the display screen and the optics collimator and the optics
The distance between fingerprint sensor meets the imaging demand of the optics collimator.
In one possible implementation, the fingerprint identification device further includes being arranged in the optical fingerprint sensor
The optical filter of top, the wavelength of the optical signal for selecting to be transmitted to the optical fingerprint sensor.
Wherein, the optical filter is packaged together with the optical fingerprint sensor, the optics collimator conduct
It is arranged above the optical filter with the relatively independent component of the optical filter and the optical fingerprint sensor；Or
Person,
The optics collimator is packaged together with the optical fingerprint sensor, the optical filter as with it is described
Optics collimator and the relatively independent component of the optical fingerprint sensor are arranged above the collimator；Alternatively,
The optics collimator, the optical filter and the optical fingerprint sensor are packaged together.
In one possible implementation, it is pasted between each component being packaged together by transparent adhesive material
Together, the non-transparent region of the relatively independent edge-of-part is pasted onto the upper of encapsulating material by opaque adhesive material
Surface.
In one possible implementation, the fingerprint identification device is pasted onto described aobvious by opaque adhesive material
The lower surface of display screen.
In one possible implementation, the optical fingerprint identification device further includes conducting wire, and the conducting wire is for electricity
Connect the optical fingerprint sensor and the substrate.
In one possible implementation, the substrate is connected to by welding under the fingerprint identification device
On the circuit board of side.
The third aspect provides a kind of electronic equipment, comprising: self light emitting display panel；And first aspect or first aspect
Any possible implementation in fingerprint identification device or second aspect or second aspect any possible realization side
Fingerprint identification device in formula.
In one possible implementation, the display screen is organic light-emitting diode (OLED) display screen OLED, the display
The luminescent layer of screen includes multiple organic light-emitting diode light sources, wherein the fingerprint identification device is using at least partly organic light emission
Excitation light source of the diode light-source as fingerprint recognition.
Detailed description of the invention
Fig. 1 is the floor map for the electronic equipment that the application can be applicable in.
Fig. 2 is partial cutaway schematic view of the electronic equipment shown in FIG. 1 along A-A '.
Fig. 3 is the schematic diagram of the positional relationship between the fingerprint identification device of the embodiment of the present application and display screen.
Fig. 4 is the schematic block diagram of the fingerprint identification device of the embodiment of the present application.
Fig. 5 is the schematic block diagram of the fingerprint identification device of the embodiment of the present application.
Fig. 6 is the structural schematic diagram of the optics collimator of the embodiment of the present application.
Fig. 7 is the schematic diagram of the light angle across optics collimator of the embodiment of the present application.
Fig. 8 is the schematic block diagram of the fingerprint identification device of the embodiment of the present application.
Fig. 9 is the schematic block diagram of the fingerprint identification device of the embodiment of the present application.
Figure 10 is the connection schematic diagram between the fingerprint identification device of the embodiment of the present application and display screen.
Figure 11 is the connection schematic diagram between the fingerprint identification device of the embodiment of the present application and display screen.
Figure 12 is the schematic block diagram of the fingerprint identification device of the embodiment of the present application.
Figure 13 is the schematic block diagram of the fingerprint identification device of the embodiment of the present application.
Figure 14 is the schematic block diagram of the fingerprint identification device of the embodiment of the present application.
Figure 15 is the schematic block diagram of the fingerprint identification device of the embodiment of the present application.
Figure 16 is the connection schematic diagram between the fingerprint identification device of the embodiment of the present application and display screen.
Figure 17 is the connection schematic diagram between the fingerprint identification device of the embodiment of the present application and display screen.
Specific embodiment
Below in conjunction with attached drawing, technical solutions in the embodiments of the present application is described.
As electronic equipment steps into comprehensive screen epoch, the extruding that electronic equipment front fingerprint collecting region is shielded comprehensively,
Therefore shield under (Under-display or Under-screen) fingerprint identification technology more and more attention has been paid to.Shield lower fingerprint to know
Other technology, which refers to, is mounted on fingerprint identification device (such as optical fingerprint identification device) below display screen, is showing to realize
Fingerprint recognition operation is carried out in the display area of screen, does not need the region setting fingerprint in electronic equipment front in addition to display area
Pickup area.
Under optical panel fingerprint identification technology carried out using the light returned from the top surface of equipment display component fingerprint induction and
Other inductive operations.The light of the return carries the information of the object (such as finger) contacted with the top surface, by acquiring and detecting
The light of the return realizes the particular optical sensor module being located at below display screen.The design of optical sensor module can be
Desired optical imagery is realized by being properly configured to acquire and detect the optical element of the light returned.
It should be understood that the technical solution of the embodiment of the present application can be applied to various electronic equipments, such as smart phone, notes
The portable or mobiles such as this computer, tablet computer, game station calculate equipment and electronic databank, automobile, bank's automatic cabinet
Other electronic equipments such as member's machine (Automated Teller Machine, ATM), but the embodiment of the present application does not limit this.
Figures 1 and 2 show that a kind of electronic equipment 100 that the fingerprint identification device of the embodiment of the present application can be applicable in is shown
It is intended to, wherein Fig. 1 is the front schematic view of electronic equipment 100, and Fig. 2 is that electronic equipment 100 shown in FIG. 1 is cutd open along the part of A-A '
Face structural schematic diagram.
As shown in Figure 1 and shown in Fig. 2, which includes display screen 120 and optical fingerprint identification device (back
Referred to as fingerprint identification device) 130, wherein the optical fingerprint identification device 130 has one or more induction arrays,
The induction arrays are arranged at the regional area of 120 lower section of display screen, so that optical finger print identification dress
The fingerprint collecting region (or induction region) 103 for setting 130 is at least partially disposed at the display area 102 of the display screen 120.
It should be appreciated that the area in the fingerprint collecting region 103 can be with the induction of the optical fingerprint identification device 130
The area of array is different, such as example, by the light path design, reflective folding light path design or other light of lens imaging
The light path designs such as convergence or reflection, can make the area in the fingerprint collecting region 103 of the optical fingerprint identification device 130
Greater than the area of 130 induction arrays of optical fingerprint identification device.In other substitution implementations, if using such as light
Line collimating fashion carry out optical path guidance, the fingerprint collecting region 103 of the optical fingerprint identification device 130 can also be designed to
The area of the induction arrays of the optical fingerprint identification device 130 is consistent.
As shown in Figure 1, the fingerprint collecting region 103 is located among the display area 102 of the display screen 120, therefore,
User is when needing to be unlocked the electronic equipment or other fingerprint authentications, it is only necessary to press finger in place
In the fingerprint collecting region 103 of the display screen 120, it can realize that fingerprint inputs.Since fingerprint detection can be in screen in fact
It is existing, therefore fingerprint key (such as Home is arranged without the special reserved space in its front for electronic equipment 100 using the above structure
Key), so as to which using screen scheme comprehensively, i.e., the display area 102 of the described display screen 120 can extend substantially to entire electronics
The front of equipment 100.
In as one embodiment, the display screen 120 can be self light emitting display panel, use spontaneous light display unit
As display pixel, for example, Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) display screen or
Micro-led (Micro-LED) display screen.For using OLED display screen, the optical fingerprint identification device 130
It can use OLED display unit (i.e. OLED light source) work that the OLED display screen 120 is located at the fingerprint identification region 103
For the excitation light source of optical finger print detection.
In other embodiments, the optical fingerprint identification device 130 can also use built-in light source or external light source
To provide the optical signal for carrying out fingerprint detection.In this case, the optical fingerprint identification device 130 can be adapted for
Non-spontaneous smooth display screen, such as liquid crystal display or other passive light emitting displays.To apply with backlight module and
For the liquid crystal display of liquid crystal display panel, fingerprint detection under the screen to support liquid crystal display, the optics of the electronic equipment 100
System of fingerprints can also include for optical finger print detection excitation light source, the excitation light source can be specially infrared light supply or
The light source of person's specific wavelength non-visible light can be set below the backlight module of the liquid crystal display or be arranged in institute
The fringe region below the cover sheet of electronic equipment 100 is stated, and liquid crystal surface can be set in the optical fingerprint identification device 130
It is guided below the fringe region of plate or cover sheet and by optical path so that fingerprint detection light can reach the optics refers to
Line identification device 130；Alternatively, the optical fingerprint identification device 130 also can be set below the backlight module, and described
Backlight module is by carrying out aperture or other optical designs to film layers such as diffusion sheet, blast piece, reflector plates to allow fingerprint to examine
Light is surveyed to pass through liquid crystal display panel and backlight module and reach the optical fingerprint identification device 130.
Also, the induction arrays of the optical fingerprint identification device 130 are specially optical detector (Photo detector)
Array comprising multiple optical detectors in array distribution, the optical detector can be used as optical sensor as described above
Unit.When finger touch, press or close to (for ease of description, the application is referred to as touching) in the fingerprint identification region
When 103, the light that the display unit of the fingerprint identification region 103 issues occurs to reflect and formed anti-in the fingerprint of finger surface
Light is penetrated, wherein the reflected light of the wrinkle ridge of the finger print and line paddy is different, reflected light is from the display screen 120 and by institute
It states photodetector array and is received and converted to corresponding electric signal, i.e. fingerprint detection signal.Based on the fingerprint detection signal
Fingerprint image data can be obtained, and can be verified with further progress fingerprint matching, thus real in the electronic equipment 100
Existing optical finger print identification function.
It should be understood that the electronic equipment 100 further includes transparency protected cover board 110, the lid in specific implementation
Plate 110 can be specially transparent cover plate, such as glass cover-plate or sapphire cover board, be located at the top of the display screen 120
And cover the front of the electronic equipment 100.Therefore, in the embodiment of the present application, so-called finger is touched, presses or is approached
The display screen 120 actually refer to finger touch, pressing or close to above the display screen 120 cover board 110 or
Cover the protective layer of the cover board 110.In addition, the electronic equipment 100 can also include touch sensor, the touch
Sensor can be specially touch panel, can be set on 120 surface of display screen, can also partially or wholly integrate
To inside the display screen 120, i.e., the described display screen 120 is specially touching display screen.
As a kind of optional implementation, as shown in Fig. 2, the optical fingerprint identification device 130 includes optical detection
Unit 134 and optical module 132, the optical detection unit 134 are electric including the induction arrays and with the induction arrays
Property connection reading circuit and other auxiliary circuits, a chip (Die) can be produced on by semiconductor technology；That is institute
Optical imagery chip or image sensor chip can be produced on by stating optical detection unit 134.The optical module 132 can be set
It sets in the top of the induction arrays of the optical detection unit 134, optical filter (or optical filter can be specifically included
(Filter)), optical path guide structure and other optical elements, the optical filter can be used for filtering out the environment for penetrating finger
Light, and the optical path guide structure is mainly used for the optical paths guidance such as the light propagated downwards being collimated, modulated or converged
To realize that will be directed to the induction arrays from the reflected reflected light of finger surface carries out optical detection.
In specific implementation, the optical module 132 can be encapsulated in the same optics with the optical detection unit 134
The chip exterior where the optical detection unit 134 can also be arranged in the optical module 132 by fingerprint chip, such as
The optical module 132 is fitted in above the chip, or the subelement of the optical module 132 is integrated in above-mentioned
Among chip.Wherein, there are many implementations for the optical path guide structure of the optical module 132, for example can be specially half
The optical path modulation device or beam path alignment device that conductor silicon wafer or other substrates are made, with multiple light path modulation units
Perhaps the collimation unit light path modulation unit or collimation unit can be specially microwell array.Alternatively, the optical waveguide layer
It can be optical lens (Lens) layer, there is one or more lens units, such as one or more non-spherical lens compositions
Lens group.From the reflected reflected light of finger through the microwell array or the lens unit carry out beam path alignment or
It after convergence, and is received by optical sensor unit below, accordingly, the induction arrays can detecte out the fingerprint image of finger
Picture.
The lower section of the optical fingerprint identification device 130 is also provided with circuit board 140, such as flexible circuit board
(Flexible Printed Circuit, FPC), the optical fingerprint identification device 130 can for example be arrived by pad solder
The circuit board 140, and realized and other of other peripheral circuits or the electronic equipment 100 by the circuit board 140
The electrical interconnection and signal transmission of element.For example, the optical fingerprint identification device 130 can be connect by the circuit board 140
The control signal of the processing unit of the electronic equipment 100 is received, and can also be examined the fingerprint by the circuit board 140
Signal is surveyed to export to the processing unit of the electronic equipment 100 or control unit etc..
This application provides the structures of two kinds of optical fingerprint identification devices.Such as shown in Fig. 3, which can be with
It is placed on the lower section of display screen.According to the layout of the size of the fingerprint identification device and the fingerprint collecting region of fingerprint identification device
It is required that and combine ergonomics, can the corresponding position at the back side of self light emitting display panel remove the material such as foam, copper foil
Material forms a specific groove.The fingerprint identification device can be pasted on display according to certain orientation by modes such as stickups
In the groove of screen, to realize the combination of optical fingerprint identification device and display screen.
The fingerprint identification device of the embodiment of the present application is described in detail below with reference to Fig. 4 to Figure 11.The fingerprint identification device example
It can such as apply in the electronic equipment with self light emitting display panel.
Fig. 4 and Fig. 5 shows the possible structure of the fingerprint identification device 400 of the application one embodiment.Such as Fig. 4 and figure
Shown in 5, the fingerprint identification device for be arranged below display screen so that its fingerprint collecting region be at least partially disposed at it is described
Within the display area of display screen.The fingerprint identification device includes supporting element, optical fingerprint sensor and optics collimator.
Wherein, one end of the supporting element is for connecting the display screen, and the other end of the supporting element is for connecting institute
The circuit board below fingerprint identification device is stated, fixed structure is provided on the supporting element, the fixed structure is for fixing light
Learn collimator.
The optical fingerprint sensor is arranged on the circuit board, for detecting the object of the fingerprint collecting overlying regions
The optical signal of body reflection.
The optics collimator setting is in the fixed structure, so that the optics collimator is arranged in the optical finger print
The top of sensor, and make the distance between the optics collimator and the display screen and the optics collimator and institute
The imaging demand that the distance between optical fingerprint sensor meets the optics collimator is stated, the optics collimator is in the future
It guides from the optical signal in the fingerprint collecting region to the optical fingerprint sensor.
The embodiment of the present application to the material of the supporting element without limitation.Above one end of the supporting element and fingerprint identification device
Display screen be connected, the other end is connected with the circuit board below fingerprint identification device, to form the inside of fingerprint identification device
Space is to be arranged each optical component.It is provided with fixed structure on the supporting element, it is quasi- which can play fixed optics
The effect of straight device.And by the way that height and position of the fixed structure on supporting element is arranged, the optics collimator can be made solid
When being scheduled on the fixed structure, the distance between the optics collimator and display screen meet and meet needed for optics collimator imaging
Object distance require and the distance between the optics collimator and optical fingerprint sensor meet the optics collimator be imaged needed for
The image distance requirement of satisfaction, so that the optical signal that the object of fingerprint collecting overlying regions reflects can accurately arrive at optical finger print biography
Sensor.
The optical fingerprint sensor includes the induction arrays with multiple optical sensor units, the induction arrays location
Domain corresponds to the fingerprint collecting region of the fingerprint identification device.In this way, the light reflected from the finger of fingerprint collecting overlying regions
After line reaches optical fingerprint sensor by the optics collimator, the sensing unit of optical fingerprint sensor can be carried
The optical signal of fingerprint pattern, to be handled collected optical signal to realize accurate fingerprint recognition.
Also, it since each component in fingerprint identification device does not need to be formed on the materials such as substrate, can reduce
The thickness of fingerprint identification device, thus realizing the volume for reducing fingerprint identification device while optical finger print identification.
Optionally, the supporting element includes two brackets, and the fixed structure is to extend along described two bracket inner sidewalls
Lug boss out, such as shown in Fig. 4 and Fig. 5.But the application is not limited to this, which is also possible in two brackets
The step structure etc. of upper setting.
Wherein, the optics collimator can be fixed on the upper surface or lower surface of the lug boss.Such as Fig. 4 institute
Show, which is pasted onto the upper surface of the lug boss；In another example the optics collimator is pasted onto the protrusion shown in Fig. 8
The lower surface in portion.Wherein, the adhesives for pasting the optics collimator and the lug boss can be opaque adhesive material, example
Such as opaque glue film or glue.
The height of the lug boss extended along two bracket inner sidewalls needs to consider the imaging parameters of the optics collimator.It should
Optics collimator is the image distance P of the optics collimator at a distance from display screen, should be in a certain range；The optics collimator
With the image distance Q at a distance from optical fingerprint sensor being the optics collimator, it should also in a certain range.Therefore, the bracket
Total height and position height of the lug boss on the bracket, it should so that optics collimator is fixed on the upper surface of the lug boss
Or behind lower surface, between the distance between the optics collimator and display screen and the optics collimator and optical fingerprint sensor
Distance in corresponding range.
Optics collimator in the embodiment of the present application for example can be silicon wafer or high transparency with through-hole array
The hybrid combining of glass and low-transmittance material, such as include multiple shown in Fig. 6, in the hole array between regular aperture and hole
Away from loophole, the loophole can to the finger of fingerprint collecting overlying regions reflect light be greater than with high transmittance
95%, other non-transparent regions then there is high-absorbility for example to meet T=I the lightt/I0≤ 5% (ItFor transmitted light, I0For
Incident light).The loophole may be that solid hole may be hollow through-hole.The optics collimator is mainly used for passing to downward
The fingerprint detection light broadcast is collimated, modulated and is imaged, and realization will be directed to light from the reflected reflected light of finger surface
The sensing unit of fingerprint sensor is learned to carry out optical detection to obtain information in fingerprint, and is wanted to incident angle is unsatisfactory for
The light asked is filtered, such as is greater than the light of α in Fig. 7 with aperture axial direction angle.Wherein, the aperture D of single hole with
The ratio of the thickness T of optics collimator for example can be in 1:30 between 1:5.The arrangement angle of loophole on the optics collimator
Degree is matched with the arragement direction of the selfluminous cell on self light emitting display panel.
Optionally, which further includes the optical filter being arranged in above the optical fingerprint sensor,
In, when which is fixed on the upper surface of the lug boss, which is fixed on the lower surface of the lug boss, or
The upper surface of the optical fingerprint sensor is arranged in person, the optical filter；Alternatively,
When the optics collimator is fixed on the lower surface of the lug boss, which is fixed on the upper table of the lug boss
Face, alternatively, the upper surface of the optical fingerprint sensor is arranged in the optical filter.
The optical filter (or being filter plate etc.) in the embodiment of the present application has the light of specific band high saturating
Rate is crossed, and does not have high transmittance then to its all band.The substrate of the optical filter for example can be smalt or blue water
The high transparency material such as crystalline substance plates the film with specific materials, the number of plies and thickness in the upper and lower surfaces of substrate respectively, from
And realize to being filtered by the light of the optical filter, have the function that wavelength selection.
Any position between display screen and optical fingerprint sensor can be set in the optical filter.
Such as shown in Fig. 4, optics collimator is pasted onto the upper surface of lug boss, and the optical filter is pasted onto lug boss
Lower surface.In another example optics collimator is pasted onto the upper surface of lug boss, and the optical filter is pasted onto light shown in Fig. 5
Learn the upper surface of fingerprint sensor.At this moment, the optical signal of finger reflection is guided to light after first passing through the modulation of optics collimator
The sensing unit of fingerprint sensor is learned, and is filtered before light reaches optical fingerprint sensor by optical filter.
Certainly, in the embodiment of the present application, optics collimator and optical filter are arranged at display screen and optical finger print biography
Between sensor, but optics collimator should meet certain requirements with the distance between display screen and optical fingerprint sensor, and
Any position between display screen and optical fingerprint sensor can be set in optical filter.Therefore, in addition to Fig. 4 and Fig. 5 institute
The structure of the fingerprint identification device shown, optics collimator and optical filter can also have other arrangements, if meet it is above-mentioned away from
From requiring.Such as shown in Fig. 8, optics collimator is pasted onto the lower surface of lug boss, and the optical filter be pasted onto it is convex
The upper surface in the portion of rising.In another example shown in Fig. 9, optics collimator is pasted onto the upper surface of optical fingerprint sensor, and optically filtering
Device is pasted onto the upper surface of lug boss.At this moment, the optical signal of finger reflection first passes through optical filter and is filtered, after filtering
To the light positioned at specific band using the induction list for being directed to optical fingerprint sensor after the modulation of optics collimator
In member.
Fig. 4 is between each optical component into Fig. 9, when the transmission region of fingerprint identification device is pasted, pastes
Material is transparent, to avoid blocking the transmission for the optical signal for carrying finger print information；And in the non-transparent of fingerprint identification device
Region is when being pasted, adhesive material be it is opaque, bring interference to avoid to the optical signal.
For example, when the optical filter is fixed on the upper surface or lower surface of the lug boss, the alternatively non-transparent district at edge
Domain is pasted onto the upper surface or lower surface of the lug boss by the such as opaque glue of opaque adhesive material or glue film etc..And
When optical filter setting is square on the optical sensor, need using transparent adhesive material such as transparent glue or glue film etc.
It is pasted onto the upper surface of optical sensor.
In another example when the optics collimator is fixed on the upper surface or lower surface of the lug boss, edge it is non-transparent
Region is pasted onto the upper surface or lower surface of the lug boss by the such as opaque glue of opaque adhesive material or glue film etc..
And when optics collimator setting is square on the optical sensor, it needs to paste using transparent adhesive material such as transparent adhesive film etc.
In the upper surface of optical sensor.
Optionally, which is pasted onto the lower surface of the display screen by opaque adhesive material.Such as scheme
Shown in 10 and Figure 11, fingerprint identification device is mounted in the groove below display screen.In addition, may be used also between supporting element and display screen
There is certain thickness foam or impermeable gelatin film to be added, and the surrounding of the junction of supporting element and display screen can also lead to
The materials such as glue are crossed to be fixed.Between supporting element and display screen in Figure 10 and Figure 11 by taking impermeable gelatin film as an example, this is impermeable
Gelatin film can not only play the role of connecting supporting element and display screen, also have the company for increasing fingerprint identification device and display screen
The effects of connecing intensity.
Optionally, which further includes conducting wire such as gold thread, and the conducting wire is for being electrically connected optical finger print biography
Sensor and the circuit board.
Optionally, which further includes signal processing module, which can be set in circuit
On plate and it is arranged in the inner space of fingerprint identification device, at the optical signal for being received to optical fingerprint sensor
Reason, such as shown in Figure 10 and Figure 11, which is arranged in space extra inside fingerprint identification device, can be with
Realize space effective use.
Figure 12 to Figure 15 shows the possible structure of the fingerprint identification device 400 of the application another embodiment.
As shown in Figure 12 to Figure 15, the fingerprint identification device be arranged below display screen so that its fingerprint collecting region at least
Part is located within the display area of the display screen, which includes supporting element, optical fingerprint sensor and optics
Collimator.
Wherein, which is arranged in the substrate of the fingerprint identification device, for detecting the fingerprint collecting
The optical signal of the object reflection of overlying regions.
The optics collimator is arranged above the optical fingerprint sensor, for will be from the light in the fingerprint collecting region
Signal is guided to the optical fingerprint sensor, which is packaged together with the optical fingerprint sensor or the light
Collimator is learned to be arranged above the optical fingerprint sensor as with the relatively independent component of the optical fingerprint sensor.
Wherein, the distance between the optics collimator and the display screen and the optics collimator and the optical finger print sense
The distance between device meets the imaging demand of the optics collimator.
The internal structure of optical fingerprint identification device is constructed in the embodiment by the way of encapsulation, it is any without making
Supporting element.Wherein, optics collimator can be packaged together with optical fingerprint sensor, or can also be used as and refer to the optics
The relatively independent component of line sensor is arranged above the optical fingerprint sensor.Here, the optics collimator and display screen it
Between distance should meet requirement and the optics collimator and the optical finger print of the object distance met needed for optics collimator imaging
The distance between sensor meets the requirement of the image distance met needed for optics collimator imaging, to make on fingerprint collecting region
The optical signal of the object reflection of side can accurately arrive at optical fingerprint sensor.
It is passed in this way, the light reflected from the finger of fingerprint collecting overlying regions reaches optical finger print by the optics collimator
After sensor, the sensing unit of optical fingerprint sensor can obtain the optical signal for carrying fingerprint pattern, thus to collected
Optical signal is handled to realize accurate fingerprint recognition.
Optionally, which further includes the optical filter being arranged in above the optical fingerprint sensor, is used
The wavelength of the optical signal of the optical fingerprint sensor is transmitted in selection.
Wherein, which is packaged together with the optical fingerprint sensor, the optics collimator as with the light
The relatively independent component of filter and the optical fingerprint sensor is learned to be arranged above the optical filter；Alternatively,
The optics collimator is packaged together with the optical fingerprint sensor, the optical filter as with the optical alignment
The relatively independent component of device and the optical fingerprint sensor is arranged above the collimator；Alternatively,
The optics collimator, the optical filter and the optical fingerprint sensor are packaged together.
It should be understood that optics collimator and optical filter are arranged between display screen and optical fingerprint sensor, still
Optics collimator should meet certain requirements with the distance between display screen and optical fingerprint sensor, and optical filter can be with
Any position between display screen and optical fingerprint sensor is set.
Such as shown in Figure 12, optical filter is pasted onto the upper surface of optical fingerprint sensor, and optical filter with
Optical fingerprint sensor is packaged together, and optics collimator is pasted onto the upper surface of encapsulating material (or capsulation material).Again
Such as shown in Figure 13, optics collimator is pasted onto the upper surface of optical fingerprint sensor, and optics collimator and optical finger print
Sensor is packaged together, and optical filter is pasted onto the upper surface of encapsulating material.In another example shown in Figure 14 and Figure 15, optics
Collimator, optical filter and optical fingerprint sensor are packaged together.Wherein, in Figure 14, optical filter is pasted onto light
Learn the upper surface of fingerprint sensor and optics collimator is pasted onto the upper surface of optical filter；In Figure 15, optics collimator
It is pasted onto the upper surface of optical fingerprint sensor and optical filter is pasted onto the upper surface of optics collimator.
In the fingerprint identification device, one can be pasted by transparent adhesive material between each component for being packaged together
It rises, to avoid blocking the transmission of optical signal；The non-transparent region of relatively independent edge-of-part can pass through opaque stickup
Material is pasted onto the upper surface of encapsulating material, brings interference to avoid to the optical signal.
Such as in Figure 12, the adhesives between optical filter and optical fingerprint sensor should have high transmittance example
For example transparent adhesive film.Adhesive material between optics collimator and encapsulating material is for example opaque glue of opaque adhesive material
Film or glue.Wherein, the thickness of the opaque adhesive material between optics collimator and encapsulating material meets certain thickness and wants
It asks, so that optics collimator is apart from the image distance requirement needed for optics collimator imaging of the distance between optical fingerprint sensor
In the range of.
Also, a certain distance requirement should be met between fingerprint identification device and display screen, so that optical alignment
In the range of requirement apart from the distance between optical fingerprint sensor object distance needed for optics collimator imaging.To make fingerprint
The optical signal of object reflection above pickup area can accurately arrive at optical fingerprint sensor.
Optionally, which is pasted onto the lower surface of the display screen by opaque adhesive material.Such as scheme
Shown in 16 and Figure 17, fingerprint identification device is mounted in the groove below display screen.In addition, may be used also between supporting element and display screen
To be added certain thickness foam or impermeable gelatin film, the thickness can be used to adjust between optics collimator and display screen away from
From, and the two sides of the junction of supporting element and display screen can be fixed by materials such as glue.In Figure 16 and Figure 17
Between supporting element and display screen by taking impermeable gelatin film as an example, the thickness of the impermeable gelatin film make optics collimator and display screen it
Between distance meet the imaging demand of optics collimator, and can play the role of connecting supporting element and display screen, can be with
Increase the bonding strength of fingerprint identification device and display screen.
In Figure 12 into Figure 15, preferred scheme can be with reference to fingerprint identification device shown in Figure 12.In Figure 13 to Figure 15
In, optics collimator is directly pasted together and is sealed with optical fingerprint sensor and/or optical filter by glue film
Dress, therefore the lower surface of optics collimator is by glue film and when component is pasted below or optics collimator
When being pasted by glue film and its upper part, adhesive film material may overflow into the loophole of optics collimator for upper surface,
To be affected to the performance of optics collimator.And in Figure 12, optics collimator not with optical fingerprint sensor and light
It learns filter package together namely optics collimator is without encapsulation, but optics collimator both ends are not used to light transmission
Region can be pasted onto the upper surface of encapsulating material by opaque adhesive material.In this way, energy in the loophole of optics collimator
Enough avoid overflowing the performance that ensure that optics collimator into adhesives.
Optionally, which is connected to the circuit board below the fingerprint identification device by welding.Such as Figure 12
To shown in Figure 15, having pad below substrate, the pad below substrate passes through the pad solder on solder such as tin and circuit board
Together, and electric connection is realized.
Optionally, which further includes conducting wire such as gold thread, which refers to for being electrically connected the optics
Line sensor and the substrate, are electrically connected the optical fingerprint sensor and the circuit board in other words.
It should be understood that in the fingerprint identification device of the embodiment of the present application, the component for needing to be pasted together, if it is in light transmission
Stickup in region then must all use the adhesive material with high transmittance, to avoid blocking the transmission of optical signal；And such as
Fruit is the stickup in non-transparent region, all suggests using opaque adhesive material, to avoid stray light to the optical signal band
To interfere.
The embodiment of the present application also provides a kind of electronic equipment, the electronic equipment may include self light emitting display panel and on
State the fingerprint identification device in the various embodiments of the application.
The electronic equipment can be any electronic equipment with self light emitting display panel, use the skill of the embodiment of the present application
Art scheme realizes fingerprint recognition under optical panel.
Display screen can be using the display screen in above description, such as OLED display screen.
When the self light emitting display panel is organic light-emitting diode (OLED) display screen, the luminescent layer of the self light emitting display panel includes multiple
Organic light-emitting diode light source, wherein the fingerprint identification device is known using at least partly organic light-emitting diode light source as fingerprint
Other excitation light source.
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 (14)
1. a kind of fingerprint identification device, which is characterized in that the fingerprint identification device for be arranged below display screen so that its
Fingerprint collecting region is at least partially disposed within the display area of the display screen, and the fingerprint identification device includes:
Supporting element, for connecting the display screen, the other end of the supporting element is described for connecting for one end of the supporting element
Circuit board below fingerprint identification device is provided with fixed structure on the supporting element, and the fixed structure is for fixing optics
Collimator；
Optical fingerprint sensor is arranged on the circuit board, and the object for detecting the fingerprint collecting overlying regions reflects
Optical signal；
The optics collimator, setting is in the fixed structure, so that optics collimator setting is passed in the optical finger print
The top of sensor, and make the distance between the optics collimator and the display screen and the optics collimator with it is described
The distance between optical fingerprint sensor meets the imaging demand of the optics collimator, and the optics collimator will be for that will come from
The optical signal in the fingerprint collecting region is guided to the optical fingerprint sensor.
2. fingerprint identification device according to claim 1, which is characterized in that the supporting element includes two brackets, described
Fixed structure is the lug boss extended along described two bracket inner sidewalls, wherein the optics collimator is fixed on described convex
The upper surface or lower surface in the portion of rising.
3. fingerprint identification device according to claim 1 or 2, which is characterized in that the fingerprint identification device further includes setting
The optical filter above the optical fingerprint sensor is set, the light letter for selecting to be transmitted to the optical fingerprint sensor
Number wavelength,
Wherein, when the optics collimator is fixed on the upper surface of the lug boss, the optical filter is fixed on described convex
The lower surface in the portion of rising, alternatively, the upper surface of the optical fingerprint sensor is arranged in the optical filter；Alternatively,
When the optics collimator is fixed on the lower surface of the lug boss, the optical filter is fixed on the lug boss
Upper surface, alternatively, the upper surface of the optical fingerprint sensor is arranged in the optical filter.
4. fingerprint identification device according to claim 3, which is characterized in that
The optics collimator is fixed on the upper surface or lower surface of the lug boss, comprising: the optics collimator edge
Non-transparent region is pasted onto the upper surface or lower surface of the lug boss by opaque adhesive material；
The optical filter is fixed on the upper surface or lower surface of the lug boss, comprising: the filter skirt it is non-
Light region is pasted onto the upper surface or lower surface of the lug boss by opaque adhesive material；
The upper surface of the optical fingerprint sensor is arranged in the optical filter, comprising: the optical filter passes through saturating
Bright adhesive material is pasted onto the upper surface of the optical fingerprint sensor.
5. fingerprint identification device according to any one of claim 1 to 4, which is characterized in that the optical finger print identification
Device is pasted onto the lower surface of the display screen by opaque adhesive material.
6. fingerprint identification device according to any one of claim 1 to 5, which is characterized in that the optical finger print identification
Device further includes conducting wire, and the conducting wire is for being electrically connected the optical fingerprint sensor and the circuit board.
7. a kind of fingerprint identification device, which is characterized in that the fingerprint identification device is arranged below display screen so that its fingerprint
Pickup area is at least partially disposed within the display area of the display screen, and the fingerprint identification device includes:
Optical fingerprint sensor is arranged in the substrate of the fingerprint identification device, for detecting the fingerprint collecting region
The optical signal of the object reflection of side；
Optics collimator is arranged above the optical fingerprint sensor, for that will believe from the light in the fingerprint collecting region
Number guidance to the optical fingerprint sensor, the optics collimator is packaged together with the optical fingerprint sensor, or
The optics collimator is arranged as with the relatively independent component of the optical fingerprint sensor in the optical fingerprint sensor
Top；
Wherein, the distance between the optics collimator and the display screen and the optics collimator and the optical finger print
The distance between sensor meets the imaging demand of the optics collimator.
8. fingerprint identification device according to claim 7, which is characterized in that the fingerprint identification device further includes that setting exists
Optical filter above the optical fingerprint sensor, for selecting the optical signal for being transmitted to the optical fingerprint sensor
Wavelength,
Wherein, the optical filter is packaged together with the optical fingerprint sensor, the optics collimator as with institute
It states optical filter and the relatively independent component of the optical fingerprint sensor is arranged above the optical filter；Alternatively,
The optics collimator is packaged together with the optical fingerprint sensor, the optical filter as with the optics
Collimator and the relatively independent component of the optical fingerprint sensor are arranged above the collimator；Alternatively,
The optics collimator, the optical filter and the optical fingerprint sensor are packaged together.
9. fingerprint identification device according to claim 8, which is characterized in that lead between each component being packaged together
It crosses transparent adhesive material to be pasted together, the non-transparent region at the edge of the relatively independent component passes through opaque stickup material
Material is pasted onto the upper surface of encapsulating material.
10. fingerprint identification device according to any one of claims 7 to 9, which is characterized in that
The fingerprint identification device is pasted onto the lower surface of the display screen by opaque adhesive material.
11. fingerprint identification device according to any one of claims 7 to 10, which is characterized in that the optical finger print is known
Other device further includes conducting wire, and the conducting wire is for being electrically connected the optical fingerprint sensor and the substrate.
12. fingerprint identification device according to any one of claims 7 to 11, which is characterized in that the substrate passes through weldering
The mode connect is connected on the circuit board below the fingerprint identification device.
13. a kind of electronic equipment characterized by comprising
Self light emitting display panel, and
Fingerprint identification device according to any one of claim 1 to 6, or according to any one of claim 7 to 12
The fingerprint identification device.
14. electronic equipment according to claim 13, which is characterized in that the display screen is organic light-emitting diode display
Shield OLED, the luminescent layer of the display screen includes multiple organic light-emitting diode light sources, wherein the fingerprint identification device uses
At least partly excitation light source of the organic light-emitting diode light source as fingerprint recognition.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/116259 WO2020102949A1 (en) | 2018-11-19 | 2018-11-19 | Fingerprint identification apparatus and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109643377A true CN109643377A (en) | 2019-04-16 |
Family
ID=66060160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880002297.1A Pending CN109643377A (en) | 2018-11-19 | 2018-11-19 | Fingerprint identification device and electronic equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109643377A (en) |
| WO (1) | WO2020102949A1 (en) |
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| CN110235142A (en) * | 2019-04-29 | 2019-09-13 | 深圳市汇顶科技股份有限公司 | Biometric devices, method and electronic equipment |
| CN110443163A (en) * | 2019-07-19 | 2019-11-12 | 昆山丘钛微电子科技有限公司 | Fingerprint recognition display screen and electronic equipment |
| CN110799988A (en) * | 2019-04-30 | 2020-02-14 | 深圳市汇顶科技股份有限公司 | Fingerprint identification device and electronic equipment |
| CN110799990A (en) * | 2019-04-22 | 2020-02-14 | 深圳市汇顶科技股份有限公司 | Fingerprint identification device and electronic equipment |
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| CN111626214A (en) * | 2020-05-27 | 2020-09-04 | 深圳市汇顶科技股份有限公司 | Under-screen fingerprint identification device and system, fingerprint identification method and electronic device |
| WO2020211062A1 (en) * | 2019-04-18 | 2020-10-22 | 深圳市汇顶科技股份有限公司 | Fingerprint recognition apparatus and electronic device |
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Application publication date: 20190416 |