CN109255285A - Based on optical fingerprint sensor, include its electronic device and its operating method - Google Patents
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- CN109255285A CN109255285A CN201810765004.7A CN201810765004A CN109255285A CN 109255285 A CN109255285 A CN 109255285A CN 201810765004 A CN201810765004 A CN 201810765004A CN 109255285 A CN109255285 A CN 109255285A
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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
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/143—Sensing or illuminating at different wavelengths
-
- 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
- G06V40/40—Spoof detection, e.g. liveness detection
- G06V40/45—Detection of the body part being alive
Abstract
One kind may include based on optical fingerprint sensor: the first photodiode；First metallic shielding structure is formed on the first photodiode and includes the first opening；First color filter structure is formed on the first metallic shielding structure and includes the second opening of the first opening of exposure；Second photodiode is spaced apart with the first photodiode with preset distance；First nanocomposite optical structure of the light filter is formed on second photodiode；And first band limits structure of the light filter, is formed on nanocomposite optical structure of the light filter.
Description
Cross reference to related applications
This application claims the Korean Patent Application No. 10-2017- submitted on July 13rd, 2017 to Korean Intellectual Property Office
0089143 and Korean Patent Application No. 10-2018-0001861 from January 5th, 2018 to Korean Intellectual Property Office that submitted
Priority, the disclosure of which is incorporated herein by reference in their entirety.
Technical field
It is related to electronic device with the consistent device and method of example embodiment, and relates more particularly to based on optical finger
Line sensor, the operating method comprising electronic device and electronic device based on optical fingerprint sensor.
Background technique
Description of related art
Electronic device provides various functions based on the various electronic circuit/module/chip operations being included in.It is all
Such as computer, smart phone, tablet computer electronic device include for the purpose that various functions are provided electronic circuit,
Module or chip.
As the safety of electronic device becomes more important, electronic device can carry out various user authentication functions, come
Only service is provided to certified user.For example, fingerprint detection and identification are one of the methods of widely used user authentication.Electricity
Sub-device can provide user authentication in the following manner: detecting the fingerprint of user and the user fingerprints confirmly detected are
It is no to match the certification fingerprint (i.e. reference fingerprint data) stored in advance.
Routinely, fingerprint identification method included condenser type detection method and be based on optical detection method.It is being based on
In the case where optical fingerprint identification method, level of security may it is relatively low because user fingerprints may be easier duplication (or
Manifolding).
Summary of the invention
Embodiment of the disclosure is in the identification and detection of user fingerprints, by determining whether the fingerprint of identification is from true
The fingerprint of the finger of people or false fingerprint, provide with improve safety based on optical fingerprint sensor, comprising based on light
The electronic device of fingerprint sensor and the operating method of the electronic device.
Aspect according to example embodiment, one kind include based on optical fingerprint sensor: the first photodiode；First
Metallic shielding structure is formed on the first photodiode and includes the first opening；First color filter structure, shape
It is open at second on the first metallic shielding structure and comprising the first opening of exposure；Second photodiode, with described
One photodiode is spaced apart with preset distance；First nanocomposite optical structure of the light filter is formed in two pole of the second photoelectricity
Guan Shang；And first band limits structure of the light filter, is formed on nanocomposite optical structure of the light filter.
One aspect according to example embodiment, one kind may include based on optical fingerprint sensor: the first fingerprint picture
Element exports the first signal based on the first luminous intensity reflected from user fingerprints；First spectral pixel, based on reflected light
Second intensity of the first narrow band light exports second signal, which has first wave length；And sensor driver.
Sensor driver be configurable to control the first fingerprint pixel and the first spectral pixel based on the first signal with generate about
The information in fingerprint of user fingerprints, and the Fingerprint information about user fingerprints is generated based on second signal.
One aspect according to example embodiment, a kind of electronic device may include: display panel, it includes multiple displays
Pixel；And it is based on optical fingerprint sensor, reflected light is configured to generate information in fingerprint and Fingerprint
Information.Reflected light can be at least one display pixel from multiple display pixels transmitting and from user fingerprints reflect
Light.It may include multiple fingerprint pixels based on optical fingerprint sensor, multiple fingerprint pixel is respectively configured to reflected light
Generate the first electric signal；Multiple spectral pixels, each of multiple spectral pixel are configured to the different narrow band of reflected light
Light generates the second electric signal；And sensor driver, it is configured to from each of multiple fingerprint pixels
First electric signal is given birth to generate information in fingerprint based on the second electric signal from each of multiple spectral pixels
At Fingerprint information.
One aspect according to example embodiment, it is a kind of to operate comprising the electronic device based on optical fingerprint sensor
Method may include: sense touch from the user；In response to the touch sensed, allow to include multiple in display panel
At least partly transmitting light of display pixel；From described at least part of the multiple display pixel sending after, based on from
The light of user fingerprints reflection obtains information in fingerprint；Multiple narrow band lights based on reflected light obtain Fingerprint information；It carries out
The fingerprint matching operation that the information in fingerprint of acquisition and preset fingerprint image information are compared；Carry out the Fingerprint that will be obtained
The living body that information and preset Fingerprint information compare detects operation；Based on fingerprint matching operation and living body detection operation
Result determine whether user authentication succeeds；And corresponding operation is carried out according to determining result.
Detailed description of the invention
By reference to the example embodiment of the attached drawing detailed description disclosure, above and other object and feature of the disclosure will
It becomes apparent, in which:
Fig. 1 is the block diagram for showing electronic device according to example embodiment；
Fig. 2 is the view for showing the configuration of finger sensing pixels array, touch panel and display panel of Fig. 1；
Fig. 3 is the view for showing the operation of finger sensing pixels array, touch panel and display panel of Fig. 1；
Fig. 4 is the view for showing the structure of fingerprint pixel and spectral pixel of Fig. 1；
Fig. 5 is the perspective view for showing the structure of fingerprint pixel and spectral pixel of Fig. 4；
Fig. 6 A and 6B are the structure for showing nanocomposite optical optical filter and the view of optical characteristics；
Fig. 7 shows the figure of the optical characteristics for multiple nanocomposite optical optical filters that instruction is separately contained in spectral pixel；
Fig. 8 shows the curve for the spectral information that instruction is obtained according to the form of user fingerprints；
Fig. 9 A and 9B are another exemplary views for describing nanocomposite optical optical filter according to example embodiment；
Figure 10 shows the figure of the optical characteristics for multiple nanocomposite optical optical filters that instruction is separately contained in spectral pixel；
Figure 11 A to 11D is the view for showing the various structures of fingerprint pixel and spectral pixel according to example embodiment；
Figure 12 A to 12F is the view for showing the various pixels arrangement of the finger sensing pixels array of Fig. 1；
Figure 13 is the block diagram for showing the electronic device comprising fingerprint sensor according to example embodiment；
Figure 14 is the block diagram for showing the electronic device comprising fingerprint sensor according to example embodiment；
Figure 15 is the block diagram for showing the electronic device comprising fingerprint sensor according to example embodiment；
Figure 16 is the flow chart for showing the operating method of electronic device according to example embodiment；
Figure 17 is to show carry out application processor according to the operating method of Figure 11, touch drive integrated circult, display driving
The view of each of integrated circuit and sensor driver operation；
Figure 18 is the block diagram for showing electronic device according to example embodiment；
Figure 19 is the view for showing the electronic device of operation diagram 18；
Figure 20 is the concept map for describing verification process according to example embodiment；And
Figure 21 is the concept map for showing the sample implementation for the electronic device for carrying out fingerprint detection function.
Specific embodiment
Example embodiment is made in detail with reference to the drawings.In the accompanying drawings, the part unrelated with explanation is omitted
Example embodiment is explicitly described, and refers to identical element through the identical appended drawing reference of specification.In this regard, originally show
Example embodiment can have different form, and should not be construed as limited to description set forth herein.
Fig. 1 is the block diagram for showing electronic device according to example embodiment.With reference to Fig. 1, electronic device 100 may include finger
Line sensor 110, touches drive integrated circult (TDI) 122, display panel 131, display driving integrated circuit at touch tablet 121
(DDI) 132 and application processor (AP) 101.In the exemplary embodiment, electronic device 100 can be various electronic devices ---
Such as mobile terminals, personal digital assistant (PDA), portable media player (PMP), digital camera, smart phone,
One of tablet computer, laptop computer, wearable device etc. ---.
Fingerprint sensor 110 is configurable to sense or detect the fingerprint of user.That is fingerprint sensor 110 can be with
It is fingerprint detection sensor or fingerprint Identification sensor, provides specified permission for certification specific user or to specific user
Purpose and detect user fingerprints.In the exemplary embodiment, fingerprint sensor 110 can be is sensed based on optical fingerprint detection
Device.However, the scope of the present disclosure and spirit are without being limited thereto.
Fingerprint sensor 110 may include finger sensing pixels array 111 and sensor driver 112.Fingerprint sensing picture
Pixel array 111 may include multiple optics pixels.Each of multiple optics pixels are configurable to detect from outside
The intensity of light.In the exemplary embodiment, multiple optics pixels of finger sensing pixels array 111 can be divided into multiple fingerprint pictures
Plain FPX and multiple spectral pixel SPX.That is finger sensing pixels array 111 may include multiple fingerprint pixel FPX and more
A spectral pixel SPX.
Each of multiple fingerprint pixel FPX are configurable to sense the light reflected from user fingerprints.That is multiple
Fingerprint pixel FPX is configurable to the image (that is, information in fingerprint) of capture user fingerprints.
Each of multiple spectral pixel SPX are configurable to sense from the light that user fingerprints reflect and certain wave
Long or narrowband wavelength (hereinafter referred to as " narrow band light ") associated light intensity.For example, in multiple spectral pixel SPX
One spectral pixel can detecte the intensity of the first narrow band light of first wave length, and its second spectral pixel can detecte and first
The intensity of second narrow band light of the different second wave length of wavelength.
In the exemplary embodiment, each of multiple fingerprint pixel FPX are configurable to detection certain band (such as first
Band) light.In contrast, each of multiple spectral pixel SPX can detecte the narrow band light more narrower than first band.In detail
Ground, the first fingerprint pixel in multiple fingerprint pixel FPX are configurable to the light of detection visual ray range (i.e. visible spectrum).
In contrast, the first spectral pixel in multiple spectral pixel SPX is configurable to the wavelength of detection narrowband (such as about
The wavelength of 550nm) narrow band light.The second spectral pixel in multiple spectral pixel SPX is configurable to detect any other wave
The light of long (such as wavelength of about 560nm).That is, it is possible to be obtained by multiple spectral pixel SPX about specific wavelength band (example
Such as the Fingerprint information of 500nm to 650nm).
In other words, the strong of the light in entire specific wavelength band can be indicated by the information that multiple fingerprint pixel FPX are detected
Degree, and the intensity of the light of each wavelength can be indicated by the Fingerprint information that multiple spectral pixel SPX are detected.
In the exemplary embodiment, for the purpose for the light for detecting different narrowband wavelengths, multiple spectral pixel SPX can distinguish
Include the nanocomposite optical optical filter with different optical characteristics.To be described more fully with reference to the following drawings fingerprint pixel FPX and
Spectral pixel SPX.
In the exemplary embodiment, the information (i.e. information in fingerprint) detected by multiple fingerprint pixel FPX can with
The information (i.e. Fingerprint information) for using in the fingerprint matching operation of family certification, and being detected by multiple spectral pixel SPX
It can be used in the living body detection operation of user authentication (especially false fingerprint detection).
As described above, fingerprint sensor 110 can pass through living body other than the fingerprint matching operation to user fingerprints
Whether detection operation is the fingerprint obtained from the finger of true man come the fingerprint confirmly detected.In other words, living body can be passed through
Detection operation is to determine whether user fingerprints are forged.
Sensor driver 112 is configurable to control finger sensing pixels array 111 under the control of AP 101.Example
Such as, sensor driver 112 can control finger sensing pixels array 111, so that from the multiple of finger sensing pixels array 111
Fingerprint pixel FPX obtains information in fingerprint and obtains Fingerprint information FSI from multiple spectral pixel SPX.
Touch panel 121 may include multiple sense wires.Multiple sense wires can be arranged on line direction and column direction.Touching
User's touch can be sensed under the control of TDI 122 and can incite somebody to action by touching each of multiple sense wires of panel 121
The signal of sensing is supplied to TDI 122.
Based on the signal from touch panel 121, TDI 122 can control touch panel 121 and sense user's
It touches.For example, the change based on the signal received from touch panel 121, TDI122 can provide sensing signal multiple
Sense wire and the touch of sensing touch user or touch location or touch area on touch panel 121.
Touch panel 121 and TDI 122 as described above are examples, and the scope of the present disclosure and spirit are without being limited thereto.
Touch panel 121 and TDI 122 can be realized according to the various modes of mutual capacitance mode, self-capacitance mode etc..
Display panel 131 may include multiple pixels to external display image information.Each of multiple pixels can
To be Organic Light Emitting Diode (OLED) pixel, but the scope of the present disclosure and spirit are without being limited thereto.DDI 132 control it
Under, display panel 131 can show image information or allow the pixel emission light of specific region.
The example embodiment according to shown in Fig. 1, touch panel 121 and display panel 131 are separated from each other, but this public affairs
The scope and spirit opened are without being limited thereto.For example, display panel 131 can be formed in a semiconductor substrate, and touch surface
Plate 121 can be formed on display panel 131.Alternatively, display panel 131 and touch panel 121 can be in identical techniques
Middle formation.For example, display panel 131 and touch panel 121 can be implemented as stacked (on-cell) type or embedded (in-
Cell) type.
The example embodiment according to shown in Fig. 1, TDI 122 and DDI 132 are separated from each other, but the scope of the present disclosure
It is without being limited thereto with spirit.TDI 122 and DDI 132 can be realized with a semiconductor chip or a semiconductor module.
AP 101 can control the integrated operation of electronic device 100.AP 101 can be according to the operation mould of electronic device 100
Formula, the input of user or various attended operations control sensor driver 112, TDI 122 and DDI 132.
In the exemplary embodiment, touch panel 121 and display panel 131 can separately include fingerprint sensing region SA and
SA'.For the purpose for sensing or detecting user fingerprints, fingerprint sensing region SA and SA ' can correspond to user fingerprints touch
Region.
The sensing region SA and SA ' of panel 121 and 131 and fingerprint sensor 110 can be placed as overlapping each other.Example
Such as, the sensing region SA ' of display panel 131 can be placed below the sensing region SA of touch panel 121, and can incited somebody to action
Fingerprint sensing device 110 (or finger sensing pixels array 111) is placed below the sensing region SA ' of display panel 131.
When detecting the touch of user, AP 101 can control DDI 132 to allow the sensing region of display panel 131
SA ' (or some pixels of sensing region SA ') emits light.Under the control of AP 101, DDI 132 can permit display panel
Some pixel emission light of 131 sensing region SA '.
Later, as sensing region SA of the user fingerprints near to or in contact with touch panel 121, AP 101 can control DDI
132 to allow all or some pixel emission light of the sensing region SA ' of display panel 131.In this case, it is sent out by pixel
The light quantity penetrated can be bigger than the light quantity before finger touch.It alternatively, can be more preparatory than by user by the light quantity of pixel emission
The light quantity of setting is bigger.Alternatively, maximum value can be by the light quantity of pixel emission.
It can be reflected from the light of all or some pixel emission of the sensing region SA ' of display panel 131 by user fingerprints,
And reflected light can be provided to fingerprint sensor 110.Fingerprint sensor 110 can capture the light reflected from user fingerprints
To obtain user fingerprint image information and Fingerprint information.In an example embodiment, user fingerprint image information can be with
It is obtained by multiple fingerprint pixel FPX, and Fingerprint information can be obtained by multiple spectral pixel SPX.That is transmitting
The display pixel of light may be used as the light source of detection information in fingerprint and Fingerprint information.
AP 101 can carry out fingerprint matching operation based on the information in fingerprint of acquisition, and can be based on fingerprint
Whether the result with operation is the fingerprint authenticated come the information in fingerprint for determining acquisition；The AP 101 can be based on Fingerprint
Information operates to carry out living body detection, and can detect the result of operation based on living body to determine and touch panel 121
Sensing region SA contact fingerprint whether be true man fingerprint.
Fig. 2 is the view for showing the configuration of finger sensing pixels array 111, touch panel 121 and display panel 131 of Fig. 1
Figure.For ease of description and for ease of description, it is omitted except finger sensing pixels array 111, touch panel 121 and display surface
Remaining components except plate 131.However, the scope of the present disclosure and spirit are without being limited thereto.
With reference to Fig. 1 and 2, electronic device 100 may include finger sensing pixels array 111, touch panel 121 and display surface
Plate 131.As shown in Fig. 2, display panel 131 can be placed on 121 lower section of touch panel, and finger sensing pixels array 111
131 lower section of display panel can be placed on.
In detail, touch panel 121 and display panel 131 can be arranged as follows: so that the sense of touch panel 121
Region SA is surveyed to be aligned with the sensing region SA ' of display panel 131.Finger sensing pixels array 111 and display panel 131 can be with
As under type is arranged: so that the sensing region SA ' of display panel 131 and finger sensing pixels array 111 are aligned.
Since finger sensing pixels array 111, touch panel 121 and display panel 131 being arranged as shown in Figure 2, work as user
When the sensing region SA of fingerprint and touch panel 121 is contacted, from include display panel 131 sensing region SA ' in display
The light of pixel emission can be reflected by fingerprint, and reflected light can be provided to finger sensing pixels array 111.Therefore, refer to
Line sensor 110 can obtain the information in fingerprint and Fingerprint information of user fingerprints.
Fig. 3 is the finger sensing pixels array 111 for showing operation diagram 1, the view of touch tablet 121 and display panel 131.For
Convenient for explanation and for ease of description, it is omitted except finger sensing pixels array 111, touch panel 121 and display panel 131
Except remaining components.However, the scope of the present disclosure and spirit are without being limited thereto.
With reference to Fig. 1 and 3, electronic device 100 may include finger sensing pixels array 111, touch panel 121 and display surface
Plate 131.As described above, finger sensing pixels array 111, touch tablet 121 and display panel 131 can be set to overlap each other.
Display panel 131 may include multiple display pixel DP.Multiple display pixel DP can DDI 132 control it
Lower transmitting light.For example, multiple display pixel DP can be OLED pixel, but the scope of the present disclosure and spirit are without being limited thereto.
The first display pixel DP1 in multiple display pixels can indicate to include all or some in sensing region SA
Display pixel.For example, the first display pixel DP1 can correspond to include the display pixel in sensing region SA.Alternatively,
One display pixel DP1 can be located on finger sensing pixels array 111/on display pixel.Optionally, the first display
It includes display pixel in the region of touch panel contacted with fingerprint FP that pixel DP1, which can be,.
Second display pixel DP2 of multiple display pixels can not emit light.For example, the second display pixel DP2 can refer to
Show and is included in the NSA of non-sensing region (for example, being not included in sensing region SA in touch panel 121 and display panel 131
Region) those of display pixel.Alternatively, the second display pixel DP2 can be does not connect included in the fingerprint FP of touch panel 121
Display pixel in the region of touching.
For example, display panel is shown when user fingerprints FP is contacted with the sensing region SA of touch panel 121 or is close
Show that some display pixels (such as first display pixel DP1) in pixel can emit light under the control of DDI 132.Example
Such as, DDI 132 can permit the first display pixel DP1 transmitting light, so that the light emitted from the first display pixel DP1 is by fingerprint FP
It reflects and provides the reflected light to the finger sensing pixels array 111 of fingerprint sensor 110.In this case, first
Display pixel DP1 can emit light, and the amount ratio of the light is bigger by the preset reference value of user.Alternatively, the first display picture
Plain DP1 can emit light to the maximum extent.The light emitted from the first display pixel DP1 can be reflected by fingerprint FP, and can be with
There is provided reflected light to finger sensing pixels array 111.
Finger sensing pixels array 111 may include multiple fingerprint pixel FPX and multiple spectral pixel SPX.Multiple fingerprints
Pixel FPX and multiple spectral pixel SPX can be distinguished based on the light for emitting from the first display pixel DP1 and reflecting from fingerprint FP
Obtain information in fingerprint and Fingerprint information.For example, multiple fingerprint pixel FPX can based on the light reflected from fingerprint FP come
Information in fingerprint is obtained, and multiple spectral pixel SPX can obtain Fingerprint letter based on the light reflected from fingerprint FP
Breath.
In an example embodiment, the information in fingerprint of acquisition can be used for fingerprint matching operation, and obtain
Fingerprint information can be used for living body detection operation.
In the exemplary embodiment, the light that some pixels of the first display pixel DP1 can be brighter with transmitting ratio residual pixel.?
In this case, the position of these pixels can correspond to the position of spectral pixel SPX.That is the first display pixel DP1 it
In display pixel corresponding with spectral pixel SPX can be brighter with transmitting ratio residue display pixel light.
Fig. 4 is the view for showing the structure of fingerprint pixel FPX and spectral pixel SPX of Fig. 1.Fingerprint picture shown in Fig. 4
Plain FPX and spectral pixel SPX is example, and the scope of the present disclosure and spirit are without being limited thereto.
For ease of description, term " broadband light " and " narrow band light " are used below.Broadband light instruction is reflected from user fingerprints
The wavelength with certain band light.Narrow band light instruction has the light of specific wavelength.For example, broadband light can indicate have comprising
The light of wavelength in the band of 500nm to 650nm, and can be by the light with limit filter filters.Narrow band light can be wave
The light of a length of 550nm ± α (wherein α is nonnegative integer and disclosed numerical value is example) and can be by nanocomposite optical optical filter
The light of filtering.In the exemplary embodiment, the wavelength of narrow band light can be determined by the optical characteristics of nanocomposite optical optical filter.So
And these terms are easy to describe the technical idea of the disclosure, and the scope of the present disclosure and spirit are without being limited thereto.
With reference to Fig. 4, finger sensing pixels array 111 may include fingerprint pixel FPX and spectral pixel SPX.Fingerprint pixel
Each of FPX may include optical lens OL, upper passivation UP, metallic shielding structure MTS, color filter structure
CFS, photodiode PD and boundary separation layer BR.Optical lens OL is configured to focus the light reflected from fingerprint FP.Top is blunt
Changing layer UP can be formed between optical lens OL and color filter structure C FS.
Metallic shielding structure MTS can prevent from providing reflected light into photodiode PD.That is metallic shielding structure
MTS can stop the reflected light in the remainder other than the first opening L1, arrive only to allow the vertical component of reflected light
Up to photodiode PD.Reason is for the ridge for clearly identifying such as fingerprint in the object sensing of such as fingerprint sensing
With the purpose of the target of the small size of paddy, there is the demand of the non-normal light around stopping.
In the exemplary embodiment, metallic shielding structure MTS may include metal.Metallic shielding structure MTS may include but
It is not limited at least one of tungsten (W), aluminium (Al) and copper (Cu).
Color filter structure C FS may include the multiple color filter (examples being stacked on metallic shielding structure MTS
Such as, red (R), green (G) and blue (B)).For example, the blue filter " B " of color filter structure C FS can be stacked
On metallic shielding structure MTS, green filter " G " can be stacked on blue filter " B ", and red can be filtered
Light device " R " is stacked on green filter " G ".
The optical filter " R ", " G " and " B " of color filter structure C FS can separately include the second to the 4th opening L2 extremely
L4.Each of second to the 4th opening L2 to L4 is configurable to pass through the light focused by optical lens OL.In example
In embodiment, the diameter of the second to the 4th opening L2 to L4 can be different from each other.In other words, as shown in figure 4, optical filter
Second to the 4th opening L2 to L4 of " R ", " G " and " B " can be formed with stairstepping (for example, cascade).In example embodiment
In, multiple optical filters " R ", " G " and " B " of color filter structure C FS can be formed, in order to not cover metallic shielding structure
The first opening L1 of MTS.That is as shown in figure 4, the second to the 4th opening L2 to L4 of optical filter " R ", " G " and " B " can be with
Be formed as the first opening L1 exposure for making metallic shielding structure MTS.
The color filter " R ", " G " and " B " of color filter structure C FS can be formed in addition to forming the L2 to L4 that is open
Region except remaining area in.That is color filter structure C FS can form to connect in fingerprint pixel
In FPX.
Color filter structure C FS may be implemented outside the black of finger sensing pixels array 111.For example, metallic shield
Structure MTS can stop the light reflected from fingerprint, and can simultaneously reflect the part of the reflected light.When reflected light exposure
Or when by metallic shielding structure MTS being reflected into outside, the position of imaging sensor can be identified by user.That is, it is possible to
Imaging sensor is with the naked eye known by user, color depends on the angle to external reflection and be changing into various colors.
The phenomenon in order to prevent can be implemented as color filter structure C FS outside the black of color filter structure C FS
Absorb the various wavelength bands of reflected light.For example, the red filter " R " of color filter structure C FS can be only from reflected light
Among by the light with the wavelength corresponding to red component, and can stop or absorb the light of remaining wavelength.In contrast,
The green filter " G " and blue filter " B " of color filter structure C FS can be only among reflected light by having difference
The light of wavelength corresponding to green and blue component, and can stop or absorb remaining wavelength.That is because most of
The color filter structure C FS that wave-length coverage is stacked red filter " R ", green filter " G " and blue filter " B " inhales
It receives, so black can be presented from outside in finger sensing pixels array 111.
Color filter structure C FS may include but be not limited to the organic component of such as photoresist (PR).Implement in example
In example, stacking method, the stacking order of the color filter of color filter structure C FS various can differently be altered or modified
Or configuration.
Boundary separation layer BR can be formed in below metallic shielding structure MTS.Boundary separation layer BR is configurable to individually
The multiple fingerprint pixel FPX and multiple spectral pixel SPX of ground separation finger sensing pixels array 111.That is, it is possible to by boundary
Separation layer BR is separately separated multiple fingerprint pixel FPX and multiple spectral pixel SPX.In the exemplary embodiment, boundary separation layer BR
It can be formed in the substrate or on substrate.
Photodiode PD can be formed between the separation layer BR of boundary.Photodiode PD is configurable to according to incidence
The intensity of light exports electric signal.In the exemplary embodiment, the structure of boundary separation layer BR and photodiode PD are not limited to figure
4, and various changes or modification can be carried out according to the structure of fingerprint pixel FPX and spectral pixel SPX.
In the exemplary embodiment, insulation system ISS can be set below photodiode PD.Insulation system ISS can be with
Include the various interconnection pieces or various elements connecting with fingerprint pixel FPX and spectral pixel SPX.
Spectral pixel SPX can be formed on substrate identical with fingerprint pixel FPX.Spectral pixel SPX can be formed as
It is spaced apart with fingerprint pixel FPX with preset distance.In other words, nominal region may exist in spectral pixel SPX and fingerprint pixel
Between FPX.Nominal region may include structure similar with the fingerprint part pixel FPX, or the nominal region can be filled
In specific structure.
Spectral pixel SPX can separately include band limit optical filter BLF1 and BLF2, nanocomposite optical optical filter NOF1 and NOF2
And photodiode PD.
Band limit optical filter BLF1 and BLF2 can be formed in in color filter structure C FS identical layer.For example, being filtered with limit
Each of light device BLF1 and BLF2 can be arranged to the optical light filter for passing through the certain band of broadband light.In example reality
It applies in example, can be arranged to make the broadband light of about 500nm to 650nm logical with each of limit optical filter BLF1 and BLF2
The color filter (for example, green filter) crossed.However, the scope of the present disclosure and spirit are without being limited thereto.In addition, spectral pixel
SPX's can be arranged to the optics for passing through the broadband light of different wave length section with each of limit optical filter BLF1 and BLF2
Optical filter.
Although Fig. 4 is not clearly shown, color filter knot can be formed in limit optical filter BLF1 and BLF2
In the identical layer of one or more color filters in the color filter " R ", " G " and " B " of structure CFS.
Nanocomposite optical optical filter NOF1 and NOF2 can be formed in layer identical with metallic shielding structure MTS.Nanometer light
Optical light filter NOF1 and NOF2 can have the optical characteristics for passing through the narrow band light containing specific wavelength.For example, nanocomposite optical
Optical filter NOF1 and NOF2 can be implemented as the form of hole or disk.For example, being formed as in nanocomposite optical optical filter NOF1 and NOF2
In the case where hole shape, nanocomposite optical optical filter NOF1 and NOF2 can only pass through the first narrow band light with first wave length.?
In the case that nanocomposite optical optical filter NOF1 and NOF2 are shaped as disk shape, nanocomposite optical optical filter NOF1 and NOF2 can make to remove
Remaining light except the first narrow band light with first wave length passes through.
For example, nanocomposite optical optical filter NOF1 and NOF2 can be formed to have different wavelength features.For example, first
In the case that nanocomposite optical optical filter NOF1 includes the hole with first diameter, the first nanocomposite optical optical filter NOF1 can make the
First narrow band light of one wavelength passes through.It in contrast, include the hole with second diameter in the second nanocomposite optical optical filter NOF2
In the case where, the second nanocomposite optical optical filter NOF2 can be such that the second narrow band light of second wave length passes through.The light of spectral pixel SPX
Each of electric diode PD, which can produce, to be corresponded to by the telecommunications of the intensity of the nanocomposite optical optical filter NOF narrow band light filtered
Number.
In the exemplary embodiment, different from fingerprint pixel FPX, spectral pixel SPX can not include optical lens OL.And
And it is different from fingerprint pixel FPX, spectral pixel SPX can not include isolated opening.The reason is that, because with fingerprint pixel
FPX is compared, and spectral pixel SPX only detects the narrow band light of specific wavelength, so there is the demand for receiving many light.That is logical
It crosses and excludes the element of isolated light focusing element or the light for being used to stop particular range, spectral pixel SPX can pass through to be formed
The region of spectral pixel SPX on substrate receives whole incident lights.
As set forth above, it is possible to detected by using nanocomposite optical optical filter NOF the narrow band light of specific wavelength intensity or
The intensity of remaining light other than the narrow band light of specific wavelength.It can according to the information of above description, the intensity about narrow band light
To be obtained by spectral pixel SPX.
Fig. 5 is the perspective view for showing the structure of fingerprint pixel FPX and spectral pixel SPX of Fig. 4.In order to briefly describe, save
The unwanted component of institute of the structure of description fingerprint pixel FPX and spectral pixel SPX is omited.
With reference to Figure 4 and 5, fingerprint pixel FPX and spectral pixel SPX can be formed on substrate S UB.For example, with reference to Fig. 4 institute
Photodiode PD, boundary the separation layer BR and insulation system ISS stated can be formed in substrate S UB or on substrate S UB.
First layer LAY1 can be formed on substrate S UB/on.For example, first layer LAY1 may include metallic shield knot
Structure MTS and nanocomposite optical structure of the light filter NOFS.As described with respect to figure 4, metallic shielding structure MTS can be formed in fingerprint pixel
On FPX, and nanocomposite optical structure of the light filter NOFS can be formed on spectral pixel SPX.Nanocomposite optical structure of the light filter
NOFS may include nanocomposite optical optical filter NOF1 and NOF2 described in reference diagram 4.
Second layer LAY2 can be formed on first layer LAY1/on.For example, second layer LAY2 may include color optical filtering
Device structure C FS and with limit structure of the light filter BLFS.Color filter structure C FS can be formed on fingerprint pixel FPX, and
Band limit structure of the light filter BLFS can be formed on spectral pixel SPX.Band limit structure of the light filter BLFS may include with reference to Fig. 4
Band limit the optical filter BLF1 and BLF2.In the exemplary embodiment, nominal region can reside in fingerprint pixel FPX and spectrum
Between pixel SPX.
As described above, fingerprint pixel FPX and spectral pixel SPX can be formed on the same substrate, and fingerprint pixel FPX
Metallic shielding structure MTS and the nanocomposite optical structure of the light filter NOFS of spectral pixel SPX can be in identical layer (that is, first
Layer LAY1) in.In addition, the band limit structure of the light filter of the color filter structure C FS and spectral pixel SPX of fingerprint pixel FPX
BLFS can be formed in identical layer (that is, second layer LAY2).However, the scope of the present disclosure and spirit can be without being limited thereto.Example
It such as, can the various arrangements that corresponding structure is differently altered or modified or position.
Fig. 6 A and 6B are the structure for showing nanocomposite optical optical filter NOF1 and NOF2 and the view of optical characteristics.In order to brief
Description will describe implementation of the disclosure example with reference to the first and second nanocomposite optical optical filter NOF1 and NOF2.However, the disclosure
Scope and spirit can be without being limited thereto.For example, each of any other spectral pixel SPX may include nanocomposite optical optical filtering
The various shape of device.
With reference to Fig. 4,6A and 6B, each of spectral pixel SPX may include the first nanocomposite optical optical filter NOF1 and
Second nanocomposite optical optical filter NOF2.As described above, the first and second nanocomposite optical optical filter NOF1 and NOF2 are configurable to
Pass through the narrow band light of specific wavelength.
For example, the first and second nanocomposite optical optical filter NOF1 and NOF2 can be realized in the form of a hole.First nanometer
Optical light filter NOF1 may include multiple holes, and each of multiple hole has first diameter D1.The filter of second nanocomposite optical
Light device NOF2 may include multiple holes, and each of multiple hole has the second diameter D2 greater than first diameter D1.
First and second nanocomposite optical optical filter NOF1 and NOF2 can have different optical characteristics according to bore dia.Example
Such as, as shown in Figure 6B, can be with limit each of optical filter BLF1 and BLF2 passes through the broadband light of the 0th wavelength band W0
Optical light filter.First nanocomposite optical optical filter NOF1 can only make from the limit received broadband filtered optical filter BLF1
The narrow band light with first wave length W01 of light passes through, and the second nanocomposite optical optical filter NOF2 can only make from band limit filter
The narrow band light with second wave length W02 of the received broadband light filtered of light device BLF2 passes through.In such a case, it is possible to root
First wave length W01 and second wave length are determined according to the diameter in multiple holes of the first and second nanocomposite optical optical filter NOF1 and NOF2
The value of W02.
As described above, multiple spectral pixel SPX may include nanocomposite optical optical filter NOF, nanocomposite optical optical filter NOF
Comprising multiple holes with different-diameter, and multiple spectral pixel SPX are configurable to according to nanocomposite optical optical filter NOF's
Optical characteristics detect the light of different wave length.
Fig. 7 shows the multiple nanocomposite optical optical filter NOF1 indicated include in each spectral pixel SPX to NOFn's
The curve graph of optical characteristics.With reference to Fig. 7, each of multiple spectral pixel SPX be may include with different optical characteristics
Multiple nanocomposite optical optical filter NOF1 to NOFn.As described above, each of multiple nanocomposite optical optical filter NOF1 to NOFn
It may include the hole with different-diameter.
In detail, the part of multiple spectral pixel SPX can correspondingly include the first nanocomposite optical optical filter NOF1, each
Include multiple holes with first diameter；Another part of multiple spectral pixel SPX can correspondingly include the second nanocomposite optical
Optical filter NOF2 respectively includes multiple holes with second diameter, and the another part of multiple spectral pixel SPX can be corresponding
Ground includes third nanocomposite optical optical filter NOF3, respectively includes multiple holes with third diameter.
According to bore dia, multiple nanocomposite optical optical filter NOF1 to NOFn can be respectively provided with different optical characteristics.Example
Such as, as shown in fig. 7, the first nanocomposite optical optical filter NOF1 is configurable to only make to have the narrow band light of first wave length W1 to pass through,
Second nanocomposite optical optical filter NOF2 is configurable to only make to have the narrow band light of second wave length W2 to pass through, and third nanometer light
Optical light filter NOF3 is configurable to only make to have the narrow band light of third wavelength W3 to pass through.Similarly, the four to the n-th nanocomposite optical
Optical filter NOF4 to NOFn is configurable to only pass through the narrow band light with the four to the n-th wavelength W4 to Wn,
As described above, because spectral pixel SPX separately includes nanocomposite optical optical filter NOF1 to NOFn, the 0th wavelength
Spectral information (i.e. Fingerprint information) with W0 can be obtained based on the information detected from multiple spectral pixel SPX.
Fig. 8 shows the curve graph for the spectral information that instruction is obtained according to the form of user fingerprints.For example, the curve of Fig. 8
Illustrate the spectral information of the reflectivity about the light correspondingly reflected by fingerprint, gloves and printing photo.In the curve graph of Fig. 8
In, X-axis indicates wavelength, and Y-axis indicates reflectivity.
With reference to Fig. 8, the spectral information for the light that the first curve L01 instruction is reflected from the finger of user.Second curve L02 instruction
The spectral information of the light reflected from gloves.The spectral information for the light that third curve L03 instruction is reflected from printing photo.
As shown in figure 8, first indicates the different spectral informations in the 0th wavelength band W0 to third curve L01 to L03
(or spectrum characteristic or wavelength feature).As shown in figure 8, the 3rd curve L03 has one and turns for example in the 0th wavelength band W0
Point, and there are three inflection points for each of the 2nd curve L02 and the 1st curve L01 tool.Moreover, second curve L02
Reflectivity can be less than the reflectivity of first curve L01.For example, first curve L01 can come from the blood red of user's finger
The absorptivity of albumen.
In other words, incident light can be determined by analyzing the spectrum characteristic of the light in the 0th wavelength band W0 as described above
Be from the finger of user reflect or from gloves reflect or be from printing photo reflection.
For example, as described above, the of the light reflected from user fingerprints can be obtained by the spectral pixel SPX according to the disclosure
The Fingerprint information of 0 wavelength band W0.By determining whether the Fingerprint information obtained has the first curve shown in Fig. 8
The spectrum characteristic of L01 can determine that the fingerprint FP of touch is finger or the forgery from true man.
For example, the 0th wavelength band W0 can be the wavelength band by the broadband light with limit optical filter BLF1 and BLF2.
Fig. 9 A and 9B are another exemplary views for describing nanocomposite optical optical filter according to example embodiment.With reference to Fig. 9 A
And 9B, nanocomposite optical optical filter NOF1' and NOF2' are configurable to the narrow band light for stopping to have specific wavelength.For example, Fig. 9 A institute
Nanocomposite optical the optical filter NOF1' and NOF2' shown can be implemented as and nanocomposite optical optical filter NOF1 and NOF2 shown in Fig. 6 A
The form of different disks.That is the first nanocomposite optical optical filter NOF1' may include it is respectively multiple with first diameter D1
Disk, and the second nanocomposite optical optical filter NOF2' may include respectively with the multiple of the second diameter D2 greater than first diameter D1
Disk.
First and second nanocomposite optical optical filter NOF1 and NOF2 can have different optical characteristics according to disk diameter.Example
Such as, as shown in Figure 9 B, it can be the optics for passing through the light of the 0th wavelength band W0 with each of limit optical filter BLF1 and BLF2
Optical filter.First nanocomposite optical optical filter NOF1' can only stop to limit the received filtered broadband light of optical filter BLF1 from band
In the narrow band light with first wave length W01, and the second nanocomposite optical optical filter NOF2' can only stop from band limit optical filter
The narrow band light with second wave length W02 in the received filtered broadband light of BLF2.In such a case, it is possible to according to first
Determine first wave length W1's and second wave length W2 with the diameters of multiple disks of the second nanocomposite optical optical filter NOF1' and NOF2'
Value.
As described above, multiple spectral pixel SPX may include nanocomposite optical optical filter NOF, nanocomposite optical optical filter NOF
Comprising multiple disks with different-diameter, and multiple spectral pixel SPX are configurable to according to nanocomposite optical optical filter NOF's
Optical characteristics detect the light of different wave length.
For example, being circular with reference to the given description as included in nanocomposite optical optical filter mesoporous or disk of Fig. 6 A and 9A.
However, the scope of the present disclosure and spirit are unrestricted.For example, for only making the light of specific wavelength pass through or stop specific wavelength
The purpose of light includes that hole or disk in nanocomposite optical optical filter can be realized in a variety of manners.
It includes multiple nanocomposite optical optical filter NOF1' to NOFn' in each spectral pixel SPX that Figure 10, which shows instruction,
Optical characteristics curve graph.With reference to Figure 10, spectral pixel SPX can separately include the nanocomposite optical with different optical characteristics
Optical filter NOF1' to NOFn'.Multiple nm filter NOF1 to NOFn as described above may include with different-diameter
Disk, and different optical characteristics can be had according to disk diameter.
In addition to nanocomposite optical optical filter NOF1' to NOFn' only stops the narrow band light of specific wavelength, nanocomposite optical optical filter
NOF1' to NOFn' is similar to the nanocomposite optical optical filter of well format as described above, therefore will not repeat to retouch it in detail herein
It states.
Figure 11 A to 11D is the various structures for showing fingerprint pixel FPX and spectral pixel SPX according to example embodiment
View.Various forms of fingerprint pixel FPX and spectral pixel SPX are described with reference to Figure 11 A to 11D, but the scope of the present disclosure and
Spirit is unrestricted.In order to briefly describe, component identical with component described above is not described.
With reference to Figure 11 A, fingerprint pixel FPX and spectral pixel SPX can be formed on substrate S UB.Not with the embodiment of Fig. 4
Together, the color filter structure C FS of fingerprint pixel FPX may include two color filters " R " and " B ".For example, Figure 11 A
Color filter structure C FS can only include red color optical filter " R " and blue color optical filter " B ".That is fingerprint sense
Surveying outside the black of pixel array 111 can be come in fact by using red color optical filter " R " and blue color optical filter " B "
It is existing.Described above is remainders, and therefore, are not repeated here its detailed description.
With reference to Figure 11 B, color filter structure C FS can be realized with a color filter.For example, such as Figure 11 B institute
Show, color filter structure C FS may include black color optical filter BL.Black color optical filter BL can absorb all wavelengths band
Light or stop all wavelengths band light.That is, can realize finger sensing pixels battle array by black color optical filter BL
Outside the black of column 111.Described above is remaining components, therefore detailed description thereof will not be repeated herein.
With reference to Figure 11 C, IR-cut filter IRF can be formed on color filter structure C FS, and top is passivated
Layer UP can be formed on IR-cut filter IRF.IR-cut filter IRF is configurable to absorb or stop infrared
Light.Although Figure 11 C is not shown, IR-cut filter IRF can extend to spectral pixel SPX.Described above is residues
Component, therefore detailed description thereof will not be repeated herein.
With reference to Figure 11 D, can be filled and nanometer light in the nominal region between fingerprint pixel FPX and spectral pixel SPX
Optical light filter NOF material identical with optical filter BLF is limited.For example, metal screen can be formed in a part of nominal region
Shield structure MTS and color filter structure C FS, and nanocomposite optical optical filter can be formed in the remainder of nominal region
NOF and with limit optical filter BLF.That is some components of fingerprint pixel FPX and some components of spectral pixel SPX can be with shapes
At in the nominal region between fingerprint pixel FPX and spectral pixel SPX.
Fingerprint pixel FPX and spectral pixel SPX as described above is exemplary, and the scope of the present disclosure and spirit are not
It is limited to this.The structure and form of fingerprint pixel FPX and spectral pixel SPX various can differently be altered or modified.Moreover, not
In the case where the technical idea of the disclosure, various can differently it be altered or modified included in fingerprint pixel FPX and spectrum
The stacking of various assemblies in pixel SPX or the sequence of manufacture.
Figure 12 A to 12F is the view for showing the various pixels arrangement of the finger sensing pixels array 111 of Fig. 1.In order to brief
Description, it is assumed that finger sensing pixels array 111 includes to be arranged in the first row to arrange into R8 with first row to the 8th to the 8th row R1
The pixel of C1 to C8.
In addition, to simplify the explanation, the exemplary arrangement of fingerprint pixel FPX and spectral pixel SPX are shown in Figure 12 A into 12F
Out, but the scope of the present disclosure and spirit are unrestricted.For example, any one of pattern according to shown in Figure 12 A to 12F,
It can arrange the color filter structure C FS of second layer LAY2 and with limit structure of the light filter BLFS, or can arrange first layer
The metallic shielding structure MTS and nanocomposite optical structure of the light filter NOFS of LAY1.
Moreover, each component shown in Figure 12 A to 12F can be a fingerprint pixel FPX, a spectral pixel
SPX or pixel group.For example, including spectral pixel SPX in same pixel group or including spectrum in some pixel groups
Pixel SPX is configurable to the narrow band light of sensing phase co-wavelength.Alternatively, include spectral pixel SPX in same pixel group
It is configurable to the narrow band light of sensing different wave length.
In addition, nominal region (or virtual pixel) can reside between fingerprint pixel FPX and spectral pixel SPX.Figure 12 A
Pixel arrangement to finger sensing pixels array 111 shown in 12F is exemplary, and the scope of the present disclosure and spirit are unlimited
In this.
With reference to Figure 12 A, in finger sensing pixels array 111, fingerprint pixel FPX be can be set in finger sensing pixels battle array
The center of column 111, and spectral pixel SPX can be set in the periphery of finger sensing pixels array 111.For example, fingerprint pixel
FPX can be set at the intersection in the second row to the 7th row R2 to R7 and secondary series to the 7th column C2 to C7, and spectral pixel
SPX can be set at the intersection of the first row R1 and first row to the 8th column C1, in the 8th row R8 and first row to the 8th column C1
At to the intersection of C8, at the intersection of the first row to the 8th row R1 to R8 and first row C1 and the first row to the 8th row R1 extremely
The column of R8 and the 8th C8 (i.e. in neighboring area).
With reference to Figure 12 B, the arrangement of fingerprint pixel FPX and spectral pixel SPX are similar to Figure 12 A's, but additional spectrum
Pixel SPX can be set in inside.For example, instead of the fingerprint pixel FPX of Figure 12 A, spectral pixel SPX be can be set in the third line
At R3 and third to the intersection point of the 6th column C3 to C6, at intersection to the 6th column C3 to C6 of the 6th row R6 and third, the
The friendship of C6 is arranged at the intersection of three rows to the 6th row R3 to R6 and third column C3 and in the third line to the 6th row R3 to R6 and the 6th
Ji Chu.
With reference to Figure 12 C, spectral pixel SPX be can be set at some column (such as C2, C4, C6 and C8), and fingerprint picture
Plain FPX can be set at remaining columns (such as C1, C3, C5, C7).
With reference to Figure 12 D, spectral pixel SPX be can be set at some rows (such as R2, R4, R6 and R8), and fingerprint picture
Plain FPX can be set at remaining rows (such as R1, R3, R5 and R7).
With reference to Figure 12 E, the intersection for arranging C1 to C8 to the 8th in the third line R3 and first row is can be set in spectral pixel SPX
Place, at the intersection of the 6th row R6 and first row to the 8th column C1 to C8, in the first row to the 8th row R1 to R8 and third column C3
Intersection at and the first row to the intersection of the column of the 8th row R1 to R8 and the 6th C6 at, and fingerprint pixel FPX can be set
At remaining intersection other than the intersection.
With reference to Figure 12 F, in the case where not specific layout rules, fingerprint pixel FPX and spectral pixel SPX can be set
It sets at any intersection of row and column.For example, spectral pixel SPX can be set at any intersection as shown in Figure 12 F, and
Fingerprint pixel FPX can be set at remaining intersection.The method of arrangement fingerprint inducing pixel array 111 is example, this hair above
Bright scope and spirit are without being limited thereto.For example, the quantity of the fingerprint pixel FPX of finger sensing pixels array 111 can be greater than light
Compose the quantity of pixel SPX.
As described above, in accordance with an embodiment of the present disclosure, the fingerprint sensor 110 being placed on the downside of display panel 131
It may include multiple fingerprint pixel FPX and multiple spectral pixel SPX.Multiple fingerprint pixel FPX can be obtained and in touch panel
121 information in fingerprint relevant with the fingerprint touched on the sensing region SA and SA ' of display panel 131, and multiple spectrum
Pixel SPX can obtain Fingerprint information relevant to the fingerprint touched.Information in fingerprint can be used for fingerprint matching behaviour
Make, and Fingerprint information can be used for living body detection operation.Therefore, progress user is operated except through fingerprint matching to recognize
Except card, is forged via operation is detected by living body to detect fingerprint, the peace of electronic device or fingerprint sensor can be improved
Full property and reliability.
Figure 13 is the block diagram for showing the electronic device comprising fingerprint sensor according to example embodiment.To simplify the explanation
And for ease of description, the unwanted component of operation institute (such as touch panel, TDI, the display of description fingerprint sensor is omitted
Panel, DDI etc.).
With reference to Figure 13, electronic device 200 may include AP 201 and fingerprint sensor 210.Fingerprint sensor 210 can wrap
Array containing finger sensing pixels 211 and sensor driver 212.
AP 201 is configurable to control TDI, DDI and sensor driver 212.For example, AP201 can be based on from sensing
The authentication result AR of device driver 212 carries out corresponding operation (such as equipment unlock, financial payment etc.).
Finger sensing pixels array 211 may include multiple fingerprint pixel FPX and multiple spectral pixel SPX.Referring to figs. 1 to
12F describes multiple fingerprint pixel FPX and multiple spectral pixel SPX, and therefore, is not repeated here its detailed description.
As described above, multiple fingerprint pixel FPX can obtain information in fingerprint FII, and can be by the fingerprint of acquisition
Image information FII is provided to sensor driver 212.As described above, multiple spectral pixel SPX can obtain Fingerprint information
FSI, and the Fingerprint information FSI of acquisition can be provided to sensor driver 212.
Sensor driver 212 may include finger print identifying unit F AU and living body authentication unit LAU.Based on from more
The information in fingerprint FII of a fingerprint pixel FPX, finger print identifying unit F AU can carry out fingerprint matching operation.For example, passing through
By from multiple fingerprint pixel FPX information in fingerprint FII and preset (for example, pre-registering) information in fingerprint into
Row compares, and finger print identifying unit F AU can carry out fingerprint matching operation.In the exemplary embodiment, preset fingerprint image information can
To be the information pre-registered by user by individual enrollment process.
Based on the Fingerprint information FSI from multiple spectral pixel SPX, living body authentication unit LAU can live
Body detection operation.For example, as described above, the Fingerprint information FSI from multiple spectral pixel SPX may include certain band
Fingerprint information FSI.It is by the Fingerprint information FSI that determination includes the certain band in Fingerprint information FSI
No to match with AD HOC, living body authentication unit LAU can carry out living body detection operation.
In the exemplary embodiment, the fingerprint or false fingerprint that fingerprint is true man are (for example, the figure of the fingerprint on printing photo
Fingerprint mark on picture, plastic clay) operation can be detected by living body to determine.Phase is operated with determining with reference to Fig. 8 description
Associated configuration, and therefore, it is not repeated here its detailed description.
As described above, according to the operating result of finger print identifying unit F AU and living body authentication unit LAU, sensor driving
Device 212 can send authentication result AR to AP 201.That is sensor driver 212 can automatically carry out fingerprint
With operation and living body detection operation.All success identity in both the finger print identifying unit F AU and living body authentication unit LAU
In the case of, authentication result AR may include about the successful information of certification.In contrast, in finger print identifying unit F AU and living body
In any one of property authentication unit LAU or whole in the case where authentification failure, authentication result AR be may include about certification
The information of failure.
Figure 14 is the block diagram for showing the electronic device comprising fingerprint sensor according to example embodiment.With reference to Figure 14, electricity
Sub-device 300 may include AP 301 and fingerprint sensor 310.Fingerprint sensor 310 may include finger sensing pixels array
311 and sensor driver 312.Finger sensing pixels array 311 may include multiple fingerprint pixel FPX and multiple spectral pixels
SPX.The component for describing Figure 14 referring to figs. 1 to 13, and detailed description thereof will not be repeated herein.
It is different from the example embodiment of Figure 13, in the example embodiment of Figure 14, it can recognize in AP 301 comprising fingerprint
Demonstrate,prove unit F AU and living body authentication unit LAU.That is AP 301 can directly receive fingerprint image from sensor driver 312
As information FII and Fingerprint information FSI.It include the finger print identifying unit in AP301 based on received information FII and FSI
FAU and living body authentication unit LAU can carry out fingerprint matching operation and living body detection operation.
Figure 15 is the block diagram for showing the electronic device comprising fingerprint sensor according to example embodiment.With reference to Figure 15, electricity
Sub-device 400 may include AP 401, fingerprint sensor 410 and authentication module 440.Fingerprint sensor 410 may include fingerprint
Sensor pixel array 411 and sensor driver 412.Finger sensing pixels array 411 may include multiple fingerprint pixel FPX and
Multiple spectral pixel SPX.The component for describing Figure 15 referring to figs. 1 to 14, and detailed description thereof will not be repeated herein.
Different from the example embodiment of Figure 13 and 14, in the example embodiment of Figure 15, electronic device 400 be may include point
From authentication module 440.Authentication module 440 can be realized with isolated semiconductor chip or module.Alternatively, can will recognize
Card module 440 is integrated in any other component.
Authentication module 440 can receive information in fingerprint FII and Fingerprint information FSI from sensor driver 412,
And fingerprint matching operation and living body detection operation can be carried out based on the received information FII and FSI authentication module 440.
For example, authentication module 440 may include finger print identifying unit F AU and living body authentication unit LAU, finger print identifying unit F AU
Information in fingerprint FII and Fingerprint information FSI are based respectively on living body authentication unit LAU to carry out fingerprint matching operation
It detects and operates with living body.
As described above, by carrying out fingerprint matching operation based on the information in fingerprint FII and being based on Fingerprint
Information FSI carries out living body detection operation, and sensor driver, AP or isolated authentication module can determine whether fingerprint is false
And whether fingerprint matches.It is, therefore, possible to provide the electronic device with improved safety and reliability.
Figure 16 is the flow chart for showing the operating method of electronic device according to example embodiment.For ease of description, will
The operating method of Figure 16 is described with reference to the electronic device 100 of Fig. 1.However, the scope of the present disclosure and spirit are without being limited thereto.For example,
Can also operation diagram 13 to 15 in a similar manner electronic device 200,300 and 400.
With reference to Fig. 1 and 11, in operation S105, electronic device 100 can detecte the first touch of user.For example, electronics
The touch panel 121 of device 100 can sense user makes on sensing region SA first and touch.In this case, it touches
Touch scan operation can only be carried out on sensing region SA by touching panel 121.
However, the scope of the present disclosure and spirit can be without being limited thereto.For example, touch panel 121 can be sensed in addition to sensing
The touch in another region except the SA of region.In this case, touch panel 121 can be in energy-saving mode (for example, touching
The slow operation mode of scan frequency) under carry out touch scan operation on whole regions.
In operation sl 10, electronic device 100 can determine whether the first region (or size) touched of sensing is greater than
First threshold numerical value TH1.If the first of sensing the area touched is not more than first threshold numerical value TH1, can indicate,
Sense touch and it is independent of the user's intention.The case where the region that the first of sensing touches is less than first threshold numerical value TH1
Under, electronic device may return to operation S105.
It in contrast, can be according to user's if the first of sensing the area touched is greater than first threshold numerical value TH1
It is intended to control electronic device 100.For example, the purpose of the electronic device 100 for unlock lock state, user can touch electricity
Sub-device 100.
In the case where the region that the first of sensing touches is greater than first threshold numerical value TH1, in operation S115, electronics dress
Sensing region can be shown by setting.For example, the AP 101 of electronic device 100 can control DDI 132, so that display is (for example, by phase
The pixel of pass indicates) sensing region SA or SA '.DDI 132 can control display panel 131, so that being included in sensing region SA '
In display pixel show sensing region SA '.
Such as, it is convenient to omit operation S105 and operation S110, and can be carried out by the request of the user of another way
Operate S115.
In operation s 120, electronic device 100 can detecte second of touch of user.For example, being used for fingerprint recognition
Family can touch the sensing region SA ' having been displayed with his/her finger.In this case, touch panel 121 can sense
Second contacted with sensing region SA ' of user touches.For example, the first of operation S105 touches and operates the second of S120
Touch can be by individually operating the touch made, or can be the touch made by same operation.
In operation S125, electronic device 100 can determine the second of sensing touches whether be greater than second threshold numerical value
TH2.If the second of sensing touches no more than second threshold numerical value TH2, can indicate, contact area is not enough to obtain user
Information in fingerprint FII and Fingerprint information FSI.The case where the second of sensing touches no more than second threshold numerical value TH2
Under, electronic device may return to operation S120.
If the second of sensing touches greater than second threshold numerical value TH2, can indicate, contact area is enough to obtain user
Information in fingerprint FII and Fingerprint information FSI.In this case, in operation S130, electronic device 100 can be permitted
Xu Guang transmitting in sensing region SA '.For example, described with reference to FIG. 3, electronic device 100 can control DDI 132, so that
It include the first display pixel DP1 transmitting light in the sensing region SA ' of display panel 131.In this case, the first display
Pixel DP1 can emit the light of preset strength or greater strength.For example, preset strength can indicate it is preset by user
Brightness, or can indicate the brightness determined according to ambient enviroment (for example, environment light).Alternatively, the first display pixel DP1 can
To emit light with maximum intensity.
For example, as described above, it includes display in sensing region SA ' that the first display pixel DP1 of transmitting light, which can be,
Pixel, or can be includes display pixel in the corresponding region of contact surface touched with user.
In operation S135, electronic device 100 can detecte information in fingerprint FII and Fingerprint information FSI.Example
Such as, the fingerprint sensor 110 of electronic device 100 can detect information in fingerprint FII and be referred to based on the light reflected from fingerprint
Line spectral information FSI.Described above is detection information in fingerprint FII and Fingerprint information FSI method, and therefore this
In detailed description thereof will not be repeated.
Operation S140 in, electronic device 100 can based on information in fingerprint FII and Fingerprint information FSI come into
Row authentication operation.For example, electronic device 100 can carry out fingerprint matching operation based on information in fingerprint FII, and can be with base
Living body detection operation is carried out in Fingerprint information FSI.Described above is fingerprint matching operations and living body detection operation, and
And therefore it is not repeated here its detailed description.
It, can be in operation S145 in the case where both fingerprint matching operation and living body detection operation are all successful situation
Electronic device 100 is unlocked or electronic device 100 can carry out relevant operation.
In the case where any of fingerprint matching operation and living body detection operation or both failure, in operation S150
In, electronic device 100 can alert authentification failure.For example, electronic device 100 can be shown by display panel 131 about recognizing
Demonstrate,prove the information of failure.Alternatively, electronic device 100 can pass through another individual advice method (for example, sound, vibration etc.)
Notify user authentication failure.For example, electronic device 100 can carry out again according to the request of user after authentification failure
Authentication operation.Re-authentication operation can be carried out by operation S115 to operation S150.
Figure 17 is the view for showing the operation of each of AP, TDI, DDI and sensor driver, and the operation is according to figure
16 operating method carries out.For ease of description, it will not be in and repeat identical description here.
With reference to Fig. 1 and 17, in operation S205, what TDI 122 can sense user first is touched and can will be about
The information that the first of sensing touches is provided to AP 101.
In operation S210, in response to the first information touched about sensing, AP 101 can will show sensing region
The request of SA is sent to DDI 132.For example, AP 101 can carry out the operation (behaviour of Figure 16 for comparing the region that first touches
Make S110), and operation S210 can be carried out according to comparison result.Alternatively, it can carry out touching first in TDI 122
The operation (the operation S110 of Figure 16) compared of region.
In operation S215, DDI 132 can show sensing region SA ' with the request in response to AP 101.For example, DDI
132 can control display panel 131, include at least partly display pixel transmitting light in sensing region SA ' to allow.
Later, in operation S220, TDI 122 can sense the second touch of user and can provide pass to AP 101
In the second information touched of sensing.
In operation S225, in the case where the information in response to touching about the second of sensing, AP101 can will shine
Request be sent to DDI 132.For example, luminous request, which can be, to be allowed to include the first display picture in sensing region SA '
The request of the light for issuing predetermined strength or greater strength of plain DP1.For example, described above, AP 101 can be carried out the
The operation (the operation S125 of Figure 16) that two regions touched are compared, and operation S225 can be carried out according to comparison result.Substitution
Ground can carry out the operation (the operation S125 of Figure 16) for touching the region compared for second in TDI 122.
In operation S230, DDI 132 can control the display panel 131 according to the request of AP 101, to allow to include
Display pixel DP in sensing region SA ' emits light.
In operation S235, sensor driver 112 can detecte the fingerprint of user touched on touch panel 121
Information in fingerprint FII and Fingerprint information FSI.
In operation S240, sensor driver 112 can be sent out information in fingerprint FII and Fingerprint information FSI
It is sent to AP 101.
In operation S245, AP 101 can be authenticated based on information in fingerprint FII and Fingerprint information FSI
Operation (that is, fingerprint matching operation and living body detection operation).
Operating method described in reference diagram 17 is example, and the scope of the present disclosure and spirit are without being limited thereto.For example, although not existing
It is shown in attached drawing, but in the case where AP 101 does not intervene, TDI 122, DDI 132 and sensor driver 112 can be with
Information in fingerprint FII and Fingerprint information FSI are detected and authenticated as described above.That is, TDI 122,
DDI 132 and sensor driver 112 can be carried out by exchanging information directly to each other infomation detection as described above and
Authentication operation, and final authentication result can be provided to AP 101.
Figure 18 is the block diagram for showing electronic device 500 according to an embodiment of the present disclosure.In order to briefly describe, herein not
Component identical with component as described above is described.With reference to Figure 18, electronic device 500 may include finger sensing pixels array 511,
Sensor driver 512, touch panel 521, TDI522, display panel 531 and DDI 532.
It is different from the example embodiment of Fig. 1, in the example embodiment of Figure 18, for the fingerprint image for obtaining user fingerprints
The purpose of information FII and Fingerprint information FSI, sensor driver 512, TDI 522 and DDI 532 can communicate with one another and
There is no the intervention of AP 501, and is referred to based on the information in fingerprint FII of acquisition and the Fingerprint information FSI of acquisition
Line matching operation and living body detection operation.
For example, TDI 522 can sense the touch of user and can provide the information of the touch about sensing to DDI
532 rather than pass through AP 501.In response to received information, it includes display in sensing region SA ' that DDI 532, which can permit,
Pixel emits light.The information that DDI 532 can emit instruction display pixel light provides sensor driver 512, rather than
Pass through AP 501.In response to received information, sensor driver 512 can obtain information in fingerprint FII and Fingerprint
Information FSI, and fingerprint matching operation and living body can be carried out based on information in fingerprint FII and Fingerprint information FSI
Property detection operation.
As described above, sensor driver 512, TDI522 and DDI 532 can in the case where the intervention of no AP 501
To communicate with one another.In this case, because fingerprint matching operation and living body detect intervention of the operation in no AP 501
In the case of carry out, so normal authentication operation can also be carried out even if AP 501 does not wake up from suspend mode.Therefore,
It can carry out low-power authentication operation.
Figure 19 is to show the view of the operation of electronic device 500 of Figure 18.With reference to Figure 18 and 19, in operation s 310,
TDI 522 can sense the first touch of user, and can send DDI for the information touched about the first of sensing
532。
In operation S320, DDI 532 can show sensing region SA ', in response to received information.For example, in DDI
Under 532 control, some pixels of sensing region SA ' can emit light, so that user perceives his/her fingerprint and will touch
The region touched.That is can show the region that the fingerprint of user will touch when some pixel emission light.
In operation s 330, TDI 320 can sense the second touch of user, and can will touch about the second of sensing
The information touched is sent to DDI 532.
In operation S340, DDI 532 can permit some pixel emission light of sensing region SA '.In this case,
Some pixels of sensing region SA ' can emit the light of preset strength or greater strength.Alternatively, sensing region SA's ' is some
Pixel can emit the light with maximum intensity.
In operation S350, DDI 532 can provide sensor driver the information for indicating some pixel emission light
512。
In operation S360, in response to received information, sensor driver 512 can obtain information in fingerprint FII
With Fingerprint information FSI.In operation S370, sensor driver 512 can carry out authentication operation, and (i.e. fingerprint matching is operated
It detects and operates with living body).Described above is operation S360 and operation S370, and therefore, are not repeated here it and retouch in detail
It states.
In operation S380, sensor driver 512 can send authentication result to AP 501.For example, AP 501 can
(such as unlock, login, authentication failure notification etc.) is operated to correspond to received authentication result.
As described above, the component of electronic device 500 according to example embodiment can be in the feelings of the intervention of no AP 501
Fingerprint matching operation and living body detection operation are carried out under condition.Because the operation of AP 501 does not need verification operation, phase can be used
To lower power drive fingerprint sensor.
Figure 20 is the concept map for describing verification process according to example embodiment.In order to briefly describe, will not describe need not
The component of verification process is described.
With reference to Figure 20, the display area of electronic device 1000_1 may be at closed state (for example, off-mode).At this
Under state, user's touch can be sensed.For example, the touching of user can be sensed in the region other than sensing region SA_1
It touches.Alternatively, although being not shown in Figure 20, in electronic device 1000_1, the region for sensing the touch of user can be by
It is restricted to sensing region SA_1.
Then, electronic device 1000_2, which can permit from the part of sensing region SA_2 or sensing region SA_2, emits light.
This can be the instruction of the touch of induction user.
Then, electronic device 1000_3 can sense user's touch on sensing region SA_3.
Then, for the purpose for obtaining information in fingerprint FII and Fingerprint information FSI is touched from user, electronics is filled
Setting 1000_4 can permit from sensing region SA_4 transmitting light.In this case, the region for emitting light can be entire sensing
Region SA_4, or can be the region (that is, user touch area) that the sensing user in sensing region SA_4 touches.
Then, it is operated in the fingerprint matching of the information in fingerprint FII based on acquisition and the Fingerprint information FSI of acquisition
It is operated in successful situation with living body detection, electronic device 1000_5 can be unlocked or electronic device 1000_5 can be with
The information that display instruction user authentication is completed.
Alternatively, it is grasped in the fingerprint matching of the information in fingerprint FII based on acquisition and the Fingerprint information FSI of acquisition
In the case where making with any or all failure in living body detection operation, electronic device 1000_6 can be shown about certification
The information of failure.For example, can be in the various different operations for needing device unlock, financial payment or certification using as described above
Authentication mode.
In the exemplary embodiment, it is configurable to control authentication operation as described above comprising AP in an electronic
Main-process stream.Alternatively, it is configurable to carry out in the case where the intervention of not AP comprising component in an electronic above-mentioned
Authentication operation.
Figure 21 is the example implementations for showing the electronic device of carry out fingerprint detection function according to example embodiment
Concept map.With reference to Figure 21, electronic device 2000 may include touch sensor panel 2100, touch processor 2102, display
It is panel 2200, display driver 2202, the imaging sensor 2300 for fingerprint detection, buffer memory 2400, non-volatile
Property memory 2500, image processor 2600, communication block 2700, audio processor 2800 and primary processor 2900.For example, electronics
Device 2000 can be such as mobile terminals, personal digital assistant (PDA), portable media player (PMP), number
One in the various electronic devices of camera, smart phone, tablet computer, laptop computer and wearable device.
Referring to figs. 1 to 13 descriptions, touch sensor panel 2100, touch processor 2102, display panel 2200, display are driven
Dynamic device 2202, imaging sensor 2300 and primary processor 2900 can correspondingly correspond to touch panel, TDI, display panel,
DDI, fingerprint sensor and AP.
Imaging sensor 2300 can be set below touch display panel 2100 and/or display panel 2200, in sky
Between the upper specific region corresponding on touch display panel 2100 and/or display panel 2200.By using imaging sensor
2300, electronic device 2000 can be provided based on optical fingerprint detection function.For example, imaging sensor 2300 may include
Multiple fingerprint pixel FPX and multiple spectral pixel SPX, and information in fingerprint FII and Fingerprint information can be obtained
FSI。
Imaging sensor 2300 can share electronic device 2000 with touch display panel 2100 and/or display panel 2200
On region.Imaging sensor 2300 can not need the additional areas on electronic device 2000.Therefore, reduce electronic device
2000 size, or spare area can be used for any other purpose can be it is possible.Furthermore it is possible to which simplification is referred to
The configuration and operation of line detection function.
Buffer memory 2400 can store the data that will be used for the operation of electronic device 2000.For example, buffer
Memory 2400, which can be stored temporarily, to be handled by primary processor 2900 or by data to be processed.For example, buffer memory
2400 may include the volatile of such as static random access memory (SRAM), dynamic ram (DRAM) or synchronous dram (SDRAM)
Property memory, and/or such as phase transformation RAM (PRAM), magnetic resistance RAM (MRAM), resistance RAM (ReRAM) or ferroelectric RAM (FRAM)
Nonvolatile memory.
In spite of power supply, nonvolatile memory 2500 can store data.For example, nonvolatile memory 2500 can
With at least one of the various nonvolatile memories comprising such as flash memory, PRAM, MRAM, ReRAM and FRAM.For example, non-
Volatile memory 2500 may include the in-line memory and/or removable memory of electronic device 2000.
Image processor 2600 can receive light by camera lens 2610.It include the image sensing in image processor 2600
Device 2620 and image-signal processor 2630 can image informations based on received photogenerated about external object.
Signal can be passed through antenna 2710 and external equipment/systems exchange by communication block 2700.The transmitting-receiving of communication block 2700
Device 2720 and modulator/demodulator (modem) 2730 can be based at least one in various wireless communication protocols below
Kind come handle with external equipment/systems exchange signal, long term evolution (LTE), World Interoperability for Microwave Access, WiMax (WiMax),
Global system for mobile communications (GSM), CDMA (CDMA), bluetooth, near-field communication (NFC), Wi-Fi and radio frequency identification
(RFID)。
Audio processor 2800 can handle audio signal by using audio signal processor 2810.Audio processor
2800 can receive audio input by microphone 2820, or can provide audio output by loudspeaker 2830.
Primary processor 2900 can control total operation of electronic device 2000.Primary processor 2900 can control/manage electricity
The operation of the element of sub-device 2000.Primary processor 2900 can handle the various operations of operation electronic device 2000.
As described above, electronic device according to an example embodiment of the present disclosure can obtain fingerprint image letter from user fingerprints
Breath can obtain Fingerprint information from user fingerprints to carry out fingerprint matching operation to carry out living body detection operation.
By determining whether user fingerprints match with whether fingerprint is vacation, the safety and reliability of electronic device can be improved.
According to the disclosure, electronic device and fingerprint identification device can carry out user fingerprints matching operation, and can be true
Determine whether user fingerprints are false.It thus provides with improved reliability and safety based on optical fingerprint sensor,
Operating method comprising the electronic device based on optical fingerprint sensor and the electronic device.
Although describing the disclosure by reference to its exemplary embodiment, come for those of ordinary skill in the art
It says and is evident that, various changes and modifications can be made to it without departing from spirit and scope of the present disclosure, such as right
As being illustrated in it is required that.
Claims (27)
1. one kind is based on optical fingerprint sensor, comprising:
First photodiode；
First metallic shielding structure is formed on first photodiode and includes the first opening；
First color filter structure is formed on first metallic shielding structure and includes exposed first opening
Second opening；
Second photodiode is spaced apart with first photodiode with preset distance；
First nanocomposite optical structure of the light filter is formed on second photodiode；And
First band limits structure of the light filter, is formed on the first nanocomposite optical structure of the light filter.
2. according to claim 1 be based on optical fingerprint sensor, wherein first metallic shielding structure and described
First nanocomposite optical structure of the light filter, which is formed in, to be arranged on first photodiode and second photodiode
In first layer.
3. according to claim 2 described based on optical fingerprint sensor, wherein the first color filter structure and
The first band limit structure of the light filter is formed in the second layer of setting on the first layer.
4. according to claim 1 be based on optical fingerprint sensor, wherein first band limit structure of the light filter configuration
To pass through the first broadband light for belonging to first band from the light that user fingerprints reflect.
5. according to claim 4 be based on optical fingerprint sensor, wherein the first nanocomposite optical structure of the light filter
Comprising respectively having multiple holes of first diameter, and it is configured to only pass through the first narrow band light of first broadband light, it is described
First narrow band light is determined according to the first diameter.
6. according to claim 4 be based on optical fingerprint sensor, wherein the first nanocomposite optical structure of the light filter
Including respectively having multiple disks of first diameter, and it is configured to only stop true according to the first diameter in first broadband light
The first fixed narrow band light.
7. according to claim 1 be based on optical fingerprint sensor, further includes:
Third photodiode is adjacent with second photodiode；
Second nanocomposite optical structure of the light filter is formed on second photodiode；And
Second band limit structure of the light filter, is formed on the second nanocomposite optical structure of the light filter,
Wherein the first nanocomposite optical structure of the light filter and the second nanocomposite optical structure of the light filter have different from each other
Optical characteristics.
8. according to claim 7 be based on optical fingerprint sensor, further includes:
4th photodiode is adjacent with first photodiode；
Second metallic shielding structure is formed on the 4th photodiode and includes third opening；And
Second color filter structure is formed on second metallic shielding structure and includes the exposed third opening
The 4th opening.
9. according to claim 1 be based on optical fingerprint sensor, wherein the first color filter structure includes:
First color filter is configured to make the first light for corresponding to the first color from the light that user fingerprints reflect to pass through；
And
Second color filter is formed on first color filter, and be configured to transmit it is right in the reflected light
It should be in the second light of the second color.
10. according to claim 1 be based on optical fingerprint sensor, wherein the first color filter structure packet
Contain:
Black color optical filter is configured to the light for stopping to reflect from first metallic shield mechanism.
11. according to claim 1 be based on optical fingerprint sensor, further includes:
Optical lens is formed in the first color filter structure, and is configured to focus from user fingerprints reflection
Light.
12. according to claim 1 be based on optical fingerprint sensor, further includes:
IR-cut filter structure is formed in the first color filter structure.
13. one kind is based on optical fingerprint sensor, comprising:
First fingerprint pixel is configured to the first intensity of the light reflected from user fingerprints to export the first signal；
First spectral pixel, the second intensity for being configured to the first narrow band light in the reflected light with first wave length are come
Export second signal；And
Sensor driver is configured that
The first fingerprint pixel and first spectral pixel are controlled, to generate based on first signal about the user
The information in fingerprint of fingerprint, and
The Fingerprint information about the user fingerprints is generated based on the second signal.
14. according to claim 13 be based on optical fingerprint sensor, wherein first spectral pixel includes:
First band limits structure of the light filter, is configured to make the first broadband light for belonging to first band in the reflected light to pass through；
First nanocomposite optical structure of the light filter is formed in below the first band limit structure of the light filter and is configured to make described
First narrow band light of the first broadband light passes through；And
Second photodiode is formed in below the first nanocomposite optical structure of the light filter and is configured to described the
One narrow band light exports the second signal.
15. according to claim 14 be based on optical fingerprint sensor, wherein the first fingerprint pixel includes:
Optical lens is configured to focus the reflected light；
First color filter structure is formed in below the optical lens and includes the first opening, first opening
It is configured to pass through the reflected light of the focusing；
First metallic shielding structure is formed in the lower section of the first color filter structure and includes the second opening, institute
The second opening is stated to be configured to pass through the reflected light across first opening；And
First photodiode is configured to export first letter across the reflected light of second opening
Number.
16. according to claim 15 be based on optical fingerprint sensor, wherein first metallic shielding structure and institute
State the first nanocomposite optical structure of the light filter is formed on first photodiode and second photodiode first
In layer；And
Wherein the first color filter structure and first band limit structure of the light filter form the second layer on the first layer
In.
17. according to claim 15 be based on optical fingerprint sensor, wherein the first color filter structure packet
It includes:
First color filter is configured to make the first light in the reflected light corresponding to the first color to pass through；And
Second color filter is configured to make the second light in the reflected light corresponding to the second color to pass through.
18. according to claim 15 be based on optical fingerprint sensor, wherein the first fingerprint pixel further include:
IR-cut filter is formed between the optical lens and the first color filter structure.
19. according to claim 13 be based on optical fingerprint sensor, further includes:
Second spectral pixel is configured to the intensity of the second narrow band light in the reflected light with second wave length to export
Third signal,
Wherein the sensor driver generates the Fingerprint information based on the second signal and the third signal.
20. being based on optical fingerprint sensor as claimed in claim 13, further includes:
Nominal region is inserted between the first fingerprint pixel and first spectral pixel.
21. a kind of electronic device, comprising:
Display panel comprising multiple display pixels；And
Based on optical fingerprint sensor, it is configured to reflection photogenerated information in fingerprint and Fingerprint information,
Described in reflected light be from the multiple display pixel at least one display pixel transmitting and from user fingerprints reflect
Light,
It is wherein described to include: based on optical fingerprint sensor
Multiple fingerprint pixels, each of the multiple fingerprint pixel are configured to the reflected light to generate the first telecommunications
Number；
Multiple spectral pixels, each of the multiple spectral pixel are configured to the different narrow band light next life of the reflected light
At the second electric signal；And
Sensor driver is configured to first electric signal from each of the multiple fingerprint pixel
Generate the information in fingerprint, and based on second electric signal from each of the multiple spectral pixel come
Generate the Fingerprint information.
22. electronic device according to claim 21 is preset wherein at least one described display pixel is configured to transmitting ratio
The brighter light of threshold value or transmitting have the light of maximum brightness numerical value.
23. electronic device according to claim 21, wherein each of the multiple spectral pixel includes:
Nanocomposite optical optical filter is configured to pass through the narrow band light of the reflected light；And
Photodiode is configured to the narrow band light filtered by the nanocomposite optical optical filter to export described second
Electric signal；
Wherein the nanocomposite optical optical filter of each of the multiple spectral pixel has different optical characteristics.
24. electronic device as claimed in claim 21, wherein the sensor driver is configured to carry out the fingerprint image
As the fingerprint matching operation that information and preset fingerprint image information compare, and carry out the Fingerprint information and default finger
The living body that line spectral information compares detects operation.
25. electronic device according to claim 24, further includes:
Application processor, the result for being configured to the fingerprint matching operation and living body detection operation are corresponded to
Operation.
26. electronic device according to claim 21, further includes:
Touch panel is arranged on a display panel,
Wherein, panel senses touch from the user in response to the touch, at least one described display pixel emits the light.
27. a kind of method that operation includes the electronic device based on optical fingerprint sensor, which comprises
Sense touch from the user；
In response to the touch of the sensing, allow to include at least partly transmitting in multiple display pixels in display panel
Light；
After at least partly emitting described in multiple display pixels, fingerprint image is obtained based on the light reflected from user fingerprints
Information；
Narrow band light based on the reflected light obtains Fingerprint information；
Carry out the fingerprint matching for comparing the information in fingerprint of the acquisition and preset fingerprint image information operation；
Carry out the living body for comparing the Fingerprint information of acquisition and preset fingerprint spectral information detection operation；
Determine whether user authentication succeeds based on the result of fingerprint matching operation and living body detection operation；And
Corresponding operation is carried out according to the result of the determination.
Applications Claiming Priority (4)
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|---|---|---|---|
| KR20170089143 | 2017-07-13 | ||
| KR10-2017-0089143 | 2017-07-13 | ||
| KR10-2018-0001861 | 2018-01-05 | ||
| KR1020180001861A KR20190008066A (en) | 2017-07-13 | 2018-01-05 | Optics-based fingerprint sensor, electric device including optics-based fingerprint sensor, and operation method of electric device |
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| Publication Number | Publication Date |
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| CN109255285A true CN109255285A (en) | 2019-01-22 |
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ID=65050756
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810765004.7A Pending CN109255285A (en) | 2017-07-13 | 2018-07-12 | Based on optical fingerprint sensor, include its electronic device and its operating method |
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