CN108664895A - Display device and its fingerprint identification method - Google Patents
Display device and its fingerprint identification method Download PDFInfo
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- CN108664895A CN108664895A CN201810324301.8A CN201810324301A CN108664895A CN 108664895 A CN108664895 A CN 108664895A CN 201810324301 A CN201810324301 A CN 201810324301A CN 108664895 A CN108664895 A CN 108664895A
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- luminescence unit
- finger
- display device
- touch
- touch area
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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
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
Abstract
The invention discloses a kind of display device and its fingerprint identification methods.The display device includes display panel and backlight module, and backlight module includes in multiple luminescence units of matrix array distribution, and luminescence unit provides the light source needed for fingerprint recognition, and this method includes：Detect the touch control operation on display panel；When detecting touch control operation, the touch area of touch control operation on a display panel is determined；Determine the corresponding luminescence unit in touch area, wherein touch area corresponds at least one luminescence unit, and the corresponding luminescence unit in touch area is the first luminescence unit, and the luminescence unit in backlight module except the first luminescence unit is the second luminescence unit；Monitor the state model of display device, wherein the state model of display device includes display pattern；When display device is in display pattern, increase the brightness of the first luminescence unit；And it is identified after the brightness for increasing the first luminescence unit and obtains fingerprint image.By means of the invention it is possible to improve identification accuracy.
Description
Technical field
The present invention relates to fingerprint identification technology fields, more particularly, to a kind of display device and its fingerprint identification method.
Background technology
Fingerprint is inherent for everyone, with the development of science and technology, occurring a variety of carry in the market
The display device of fingerprint identification function, such as mobile phone, tablet computer and intelligent wearable device.User carries fingerprint in operation
Before the display device of identification function, it is only necessary to can be carried out Authority Verification with finger touch display unit, simplify permission and test
Card process.In addition, increasing with fingerprint recognition application scenarios, the direction of fingerprint recognition full frameization is also increasingly clear.
In the existing display device based on optical fingerprint identification technology, it will produce by illumination using semiconductor devices
The characteristic of leakage current realizes fingerprint detection, specifically, table of the light that fingerprint recognition light source generates in finger and display device touch-control
After face is reflected, reflection light is irradiated to semiconductor devices, and semiconductor devices brings to detect since fingerprint valley spike is dynamic
Light intensity still, in detection process, usually will appear other interference lights and be also irradiated to and partly lead to generate dactylogram
Body device impacts the fingerprint detection of semiconductor devices, influences the accuracy of fingerprint recognition.
Therefore it provides a kind of display device and its fingerprint identification method, to improve based on optical fingerprint identification technology
The fingerprint recognition precision of display device is this field urgent problem to be solved.
Invention content
In view of this, the present invention provides a kind of display device and its fingerprint identification method, solves base in the prior art
In the display device of optical fingerprint identification technology, when display panel is in display pattern, full frame light can interference fingerprint area
The signal detection in domain, the technical issues of influencing the accuracy of fingerprint recognition.
In order to solve the above-mentioned technical problem, the present invention proposes a kind of fingerprint identification method of display device.
The display device includes display panel and backlight module, and the backlight module includes in the multiple of matrix array distribution
Luminescence unit, the luminescence unit provide the light source needed for fingerprint recognition, the method includes：It detects on the display panel
Touch control operation；When detecting the touch control operation, the touch area of the touch control operation on said display panel is determined；Really
Determine the corresponding luminescence unit in the touch area, wherein the touch area corresponds at least one luminescence unit, institute
The corresponding luminescence unit in touch area is stated for the first luminescence unit, except the first luminescence unit described in the backlight module
The luminescence unit be the second luminescence unit；Monitor the state model of the display device, wherein the shape of the display device
Morphotype formula includes display pattern；When the display device is in the display pattern, increase the bright of first luminescence unit
Degree；And it is identified after the brightness for increasing first luminescence unit and obtains fingerprint image.
In order to solve the above-mentioned technical problem, the present invention also proposes a kind of display device.
The display device includes：Display panel, in a first direction, the display panel have display side and non-display
Side, the first direction is perpendicular to plane where the display panel；Touch control detection module, for detecting the display panel
Touch control operation；Backlight module includes the multiple luminescence units being distributed in matrix array, is set to the non-aobvious of the display panel
Show side；Monitoring modular, the state model for monitoring the display device, wherein the state model of the display device includes
Display pattern；Control module is connected with the luminescence unit, for detecting the touch-control behaviour in the touch control detection module
When making, the touch area of the touch control operation on said display panel is determined, and determine that the touch area is corresponding described
Luminescence unit, wherein the touch area corresponds at least one luminescence unit, and the touch area is corresponding described luminous
Unit is the first luminescence unit, and the luminescence unit except the first luminescence unit described in the backlight module is second luminous
Unit, and when the monitoring module monitors to the display device are in the display pattern, it is luminous single to increase described first
The brightness of member；Fingerprint identification module, the fingerprint identification module include the multiple fingerprint Identification sensors being distributed in matrix array,
For being identified after the brightness that the control module increases first luminescence unit and obtaining fingerprint image.
Compared with prior art, display device of the invention and its fingerprint identification method realize following
Advantageous effect：
Using the fingerprint identification method for the display device that the embodiment provides, fingerprint recognition is based on a kind of including in matrix battle array
The backlight module of multiple luminescence units of column distribution when carrying out fingerprint recognition, removes detection touch-control by touch control detection module first
Operation detects touch area namely the position of fingerprint at determining after touch control operation, then determines that the touch area is corresponding
Required efficient light sources when luminescence unit namely fingerprint recognition, the state model being finally presently according to the display device are adopted
With the corresponding luminescence unit in the different policy controls touch area effective light is improved when display device is in display pattern
The brightness in source, improves the semaphore of fingerprint recognition, relatively weakens signal interference caused by jamming light source, can be promoted and be referred to
The precision of line identification.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Description of the drawings
It is combined in the description and the attached drawing of a part for constitution instruction shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is a kind of structural schematic diagram of display device described in the embodiment of the present invention；
Fig. 2 is the step flow chart of the fingerprint identification method of the display device described in the embodiment of the present invention；
Fig. 3 is the schematic top plan view of the display device described in the embodiment of the present invention；
Fig. 4 is the schematic top plan view of another display device described in the embodiment of the present invention；
Fig. 5 is the structural schematic diagram of another display device described in the embodiment of the present invention；
Fig. 6 is the structural schematic diagram of another display device described in the embodiment of the present invention.
Specific implementation mode
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that：Unless in addition having
Body illustrates that the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to the present invention
And its application or any restrictions that use.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent attached drawing in a attached drawing.
Fig. 1 is the structural schematic diagram of the display device described in the embodiment of the present invention, and Fig. 2 is aobvious described in the embodiment of the present invention
The step flow chart of the fingerprint identification method of showing device, as depicted in figs. 1 and 2, in a kind of display device provided by the invention
In the embodiment of fingerprint identification method, display device includes display panel 10 and backlight module 20, wherein in a kind of specific reality
It applies in example, display panel 10 includes two opposed substrates, has liquid crystal layer between two substrates.Backlight module 20 is including being in
Multiple luminescence units 21 of matrix array distribution, 21 one side of luminescence unit is used to provide the light source needed for fingerprint recognition, another
Aspect provides the backlight needed for the display image of display panel 10.Realize the fingerprint Identification sensor of fingerprint recognition also in array point
Cloth, can realize the fingerprint recognition of full frame position in display device, for specific film layer structure, can be integrated in display panel 10
It is interior, such as in a substrate being fully integrated therein, can also fit on display panel 10, for example, it is remote to fit in a substrate
Outside from another substrate.The fingerprint identification method includes following step S101 to step S108.
Step S101：Detect the touch control operation on display panel.
In a kind of specific embodiment, touch control detection module can be integrated on display panel, for example, display panel includes
Two substrates be respectively array substrate and color membrane substrates, wherein scan line, data line, film are provided in array substrate
The structures such as transistor, pixel electrode and public electrode.Principle of the touch control detection module based on mutual tolerance detects touch control operation, including is in
Public electrode is carved slit at electrode strip, in touch control detection process by the touch-control sensing electrode and touch drive electrode of omnidirectional distribution
In be multiplexed with touch drive electrode, that is, touch drive electrode is integrated in array substrate.Touch-control sensing electrode may be disposed at
Color membrane substrates side, such as it is set to a side surface of the color membrane substrates far from array substrate.Alternatively, touch control detection module is based on certainly
The principle of appearance detects touch control operation, includes the multiple electrodes block being distributed in matrix array, public electrode can also be carved slit at
Electrode block is multiplexed with touch control electrode during touch control detection, that is, touch control electrode is integrated in array substrate.
In another specific embodiment, touch control detection module can make independently of display panel, then examine touch-control
It surveys outside module and is hung on display panel.
No matter touch control detection module is integrated in display panel, or is hung on outside display panel outside, in this step, touch-control
Detection module is measured in real time the touch control operation on display panel according to scheduled timing control.
Step S102：When detecting touch control operation, the touch area of touch control operation on a display panel is determined.
In this step when touch control detection module monitors are to touch control operation, it is necessary first to determine that the touch control operation is being shown
The specific location of touch area namely touch-control on panel.
For example, the touch control detection module for realizing touch control operation detection by mutual capacitance type, it can be to where display panel
Plane establish the two-dimensional coordinate system that horizontal-vertical both direction is constituted, then touched respectively what horizontal-vertical both direction extended
Control induction electrode and touch drive electrode, a kind of electrode can demarcate specific location coordinate in the horizontal direction on display panel, separately
A kind of electrode can demarcate the specific location coordinate on display panel in vertical direction, then by monitoring the touch-control sense of touch control operation
Answer electrode and touch drive electrode, you can while determining the touch area of touch control operation on a display panel.
It for another example, can be to where display panel for the touch control detection module by realizing touch control operation detection from capacitance type
Plane establish the two-dimensional coordinate system that horizontal-vertical both direction is constituted, then the position of the row where each touch control electrode and row
Position can demarcate on display panel in the horizontal direction with the specific location coordinate of vertical direction, then by monitoring touch control operation
Touch control electrode where row and column, you can while determining the touch area of touch control operation on a display panel.
Alternatively, can also determine touch area by other means, in short, when detecting touch control operation, pass through the step
It can determine the position namely touch area of touch control operation concrete operations.
Step S103：Determine the corresponding luminescence unit in touch area.
Wherein, the position on display panel is corresponded to according to luminescence unit, touch area namely position of touch can be preset
With the correspondence of luminescence unit, can be determined by experiment, theoretical calculation or other modes determine.It is no matter true in which way
Fixed, there is preset corresponding at least one luminescence unit in each touch area determined on display panel, on this basis,
After touch area being determined by step S102, you can in this step according to corresponding predetermined relationship, determine Touch Zone
Luminescence unit corresponding to domain.
In this embodiment, the corresponding luminescence unit in touch area is defined as the first luminescence unit, it will be in backlight module
Luminescence unit except first luminescence unit is defined as the second luminescence unit, it is to be understood that when the position of touch control operation is sent out
When changing namely touch area change, the corresponding luminescence unit in touch area namely the first luminescence unit can also occur
Variation, correspondingly the second luminescence unit can also change.
It should be noted that each luminescence unit of backlight module is turned on and off state and unlatching in the present invention
Brightness size, at least can between different touch areas independent control, for example, by display panel be preset as it is fixed it is multiple touch
Control region, the brightness size for being turned on and off and opening of the corresponding luminescence unit in each touch area can independent control, or
Person, each luminescence unit of backlight module be turned on and off state and the brightness of unlatching greatly can be with independent control.
Step S104：Monitor the state model of display device.
The step of state model of the monitoring display device can in the arbitrary sequence before following step S105, for example,
After executing completion step S103, or before executing step S102.The state model of display device includes display
Pattern and awakening mode, wherein in display mode, there is image to show on display panel, backlight module is in order to realize display surface
The image of plate is shown, generally in the state lighted；In the wake mode, display panel is in dark-state, and backlight module is correspondingly
Generally in closing namely non-luminous state.
It in this step, can be by the working condition of detection backlight module, to determine that display device is in display pattern also
It is awakening mode.
Step S105：When display device is in display pattern, increase the brightness of the first luminescence unit.
When display device is in display pattern namely backlight module generally in the state lighted, the first luminescence unit
It is in the state lighted with the second luminescence unit.And in fact, for fingerprint recognition, it is only necessary to correspond to current touch-control
The light source of first luminescence unit in region, the light source of the second luminescence unit can interfere the detection in touch area to fingerprint signal.
And in this step, the brightness of opposite second luminescence unit namely display device when realizing image display luminescence unit it is normal
Brightness is advised, the brightness of the first luminescence unit is increased so that the brightness of the first luminescence unit is realizing image with respect to display device
The Conventional brightness bigger of luminescence unit when display.
Step S106：It is identified after the brightness for increasing the first luminescence unit and obtains fingerprint image.
In this step, increase the brightness of the first luminescence unit, namely offer fingerprint recognition light source part is provided and is shone
The brightness of unit so that the brightness of efficient light sources is more than the brightness of jamming light source when fingerprint recognition.Fingerprint is carried out on this basis
Identification, is equivalent to the semaphore for improving fingerprint recognition, relatively weakens signal interference caused by jamming light source.
Step S107：When display device is in awakening mode, the first luminescence unit of control shines and the second luminescence unit
It does not shine.
When display device is in awakening mode namely backlight module generally in non-luminous state, first is luminous single
Member and the second luminescence unit are in the state of closing.And in fact, for fingerprint recognition, it is only necessary to correspond to current touch
The light source of first luminescence unit in region is controlled, and after in the prior art lighting whole luminescence units of backlight module, not only can
It causes to light the redundancy power consumption that the second luminescence unit generates, and the light source of the second luminescence unit can interfere in touch area to referring to
The detection of line signal.And in this step, only the first luminescence unit is lighted, namely the first luminescence unit of control shines, is kept
Second luminescence unit does not shine, on the one hand, only lighting portion distribution light unit can save power consumption, on the other hand, avoid first
Light source around luminescence unit interferes fingerprint recognition.Specifically, the brightness when lighting the first luminescence unit can wait
In the Conventional brightness of display device luminescence unit when realizing image display, above-mentioned Conventional brightness can also be more than, for example, when going out
Now dry finger problem or when smaller touch area or when other need to promote the situation of fingerprint signal amount, shines lighting first
The brightness that the first luminescence unit is controlled when unit is more than above-mentioned Conventional brightness.
Step S108：It is identified after the first luminescence unit of control shines and the second luminescence unit does not shine and obtains fingerprint image
Picture.
In this step, for awakening mode, the first luminescence unit of control shines and the second luminescence unit does not shine
Afterwards, namely only it lights and fingerprint recognition light source part luminescence unit is provided so that backlight module needs when only providing fingerprint recognition
Efficient light sources.Fingerprint recognition is carried out on this basis, avoids signal interference caused by jamming light source, while also saving not
Necessary power consumption.
Using the fingerprint identification method for the display device that the embodiment provides, fingerprint recognition is based on a kind of including in matrix battle array
The backlight module of multiple luminescence units of column distribution when carrying out fingerprint recognition, removes detection touch-control by touch control detection module first
Operation, determines touch area namely the position of fingerprint after detecting touch control operation, then determines that the touch area is corresponding
Required efficient light sources when luminescence unit namely fingerprint recognition, the state model being finally presently according to the display device are adopted
With the corresponding luminescence unit in the different policy controls touch area efficient light sources are improved when display dress is in display pattern
Brightness, improve the semaphore of fingerprint recognition, relatively weaken signal interference caused by jamming light source, fingerprint can be promoted
The precision of identification；When display device is in awakening mode, efficient light sources are only opened, signal caused by avoiding jamming light source is dry
It disturbs, can also promote the precision of fingerprint recognition, while also reducing the power consumption of backlight module.
Further, since touch control detection is able to detect that the touch control operation of full frame any position, then, fingerprint recognition is sensed
Device corresponds to full frame cloth and postpones, and can show the full frame identification of fingerprint, and for the fingerprint recognition of fixed position relative, identification region is more
Greatly so that the application of fingerprint recognition is more flexible extensively.
Simultaneously as using backlight module provides identification light source, opposite fingerprint recognition light source is directly multiplexed organic light emission
The light that organic light-emitting units generate in display panel, the former reacts faster at brightness regulation.Because in organic light emitting display panel
When adjustment region brightness, it is still necessary to which progressive scan could improve brightness to corresponding position to corresponding sub-pixel charging, can occupy
The excessive time；And backlight module using the present invention provides fingerprint recognition light source, needs to improve when determining fingerprint positions luminous
After the brightness of unit, corresponding position brightness can be adjusted immediately, response is faster.Also, it is long in organic light emitting display panel
Time increases brightness and lights organic light-emitting units, can cause the problem that the display panel service life is reduced and display is uneven.
In one embodiment, Fig. 3 is the schematic top plan view of the display device described in the embodiment of the present invention, as shown in figure 3,
Display panel 10 presets multiple finger-print region Q, and each finger-print region can be identical with size, can also be different, and can be regular
Shape, or irregular shape, orthographic projections of each finger-print region Q on backlight module 20 cover several luminescence units
21, it should be noted that finger-print region Q is only division in logic, on display panel 10, can not be distinguished by naked eyes
Go out the position of each finger-print region Q.Display panel 10 shown in Fig. 3 includes 6 finger-print region Q, and each finger-print region Q is in backlight
Orthographic projection in module 20 covers 6 luminescence units 21, only schematically illustrates the correspondence of finger-print region and luminescence unit
Relationship, finger-print region divide the number of luminescence unit corresponding with finger-print region, do not constitute the limit to the application display panel
It is fixed.On the basis of embodiment shown in Fig. 2, in this embodiment, step S103 includes following step：
Step S1031：The finger-print region that there is lap with touch area is determined, as the first finger-print region.
After touch area determines in step s 102 namely touch control operation location determination on a display panel, and it is each pre-
Fixed finger-print region also has determining position on a display panel, in step S1031, by touch area in display panel
On position and each finger-print region specific location compare, you can determine with touch area have lap fingerprint region
Domain, specifically, according to the difference of position of touch, the finger-print region determined may be one, it is also possible to be two or more,
In the embodiment, the finger-print region no matter determined is several, and the finger-print region determined is named as the first finger-print region.
As shown in figure 3, it is one to have the finger-print region Q of lap with touch area P, i.e. the first finger-print region is Q1.
Step S1032：Determine that the luminescence unit that orthographic projection of all first finger-print regions on backlight module is covered is
First luminescence unit.
The luminescence unit 21 that each finger-print region Q is covered has mutual corresponding relationship with each finger-print region Q, true
After fixed first finger-print region Q1, according to the mutual corresponding relationship, you can determine the luminous list that the first finger-print region Q1 is covered
Member 21, in figure 3, the luminescence unit 21 that the first finger-print region Q1 is covered are 6, and the first luminescence unit determined
21' includes 6 luminescence units, remaining 30 luminescence unit is the second luminescence unit 21 ".
Further, in one embodiment, Fig. 4 is that the vertical view of another display device described in the embodiment of the present invention is shown
It is intended to, in step S1031, when determining the finger-print region that there is lap with touch area, if obtaining two or two
Above first finger-print region, as shown in figure 4, it is two the first finger-print regions to have the finger-print region of lap with touch area
Q1, wherein this two the first finger-print region Q1 are named as the first finger-print region first Q1FirstWith the first finger-print region second Q1Second,
In, the first finger-print region first Q1FirstIt is more than the first finger-print region second Q1 with the lap of touch area PSecond, with touch area P's
Lap on the basis of embodiment shown in Fig. 2, in this embodiment, in step S105, increases the bright of the first luminescence unit
When spending, the first luminescence unit first 21' is controlledFirstBrightness be less than the second luminescence unit second 21'SecondBrightness, that is to say, that increasing
When the brightness of the first luminescence unit, the first luminescence unit first 21'FirstBrightness gain be less than the second luminescence unit second 21'SecondBrightness
Increment, wherein the first luminescence unit first 21'FirstFor the first finger-print region first Q1FirstThe hair that orthographic projection on backlight module is covered
Light unit, the first luminescence unit second 21'SecondFor the first finger-print region second Q1SecondWhat the orthographic projection on backlight module was covered shines
Unit.
In step S107, control the first luminescence unit it is luminous when, control the first luminescence unit first 21'FirstLight emission luminance
Less than the second luminescence unit second 21'SecondLight emission luminance, that is to say, that control the first luminescence unit brightness when, first shine
Unit first 21'FirstBrightness be less than the second luminescence unit second 21'SecondBrightness, for example, the first luminescence unit first 21'FirstBrightness be
Aforementioned Conventional brightness, the second luminescence unit second 21'SecondBrightness be more than aforementioned Conventional brightness.
Using the fingerprint identification method for the display device that the embodiment provides, when the position namely Touch Zone of touch control operation
Domain, at the same with two or more finger-print regions have lap when, by the fingerprint region small with touch area lap
The brightness for the luminescence unit that domain is covered is set as larger brightness, can be provided for this smaller part of touch area enough
Light source, and since touch area is few compared with this small part fingerprint content itself, it is not easy to identify, it is smaller by increasing touch area
The incident light quantity of this part and increase fingerprint signal amount, accuracy of identification can be improved；It will be big with touch area lap
The brightness for the luminescence unit that finger-print region is covered is set as smaller brightness, can reduce this larger part institute of touch area
The power consumption of corresponding light source, and since this larger part of touch area fingerprint content itself is more, it easily identifies, by reducing touch-control
The fingerprint signal amount of the incident light quantity of this smaller part of region, reduction has substantially no effect on fingerprint recognition precision.For whole next
It says, by the brightness of differential the first luminescence unit of control, avoids power wastage while improving discrimination, carry on the whole
The high utilization rate of backlight module.
In one embodiment, on the basis of embodiment shown in Fig. 2, after step slol, namely touch-control is detected
After operation, before step S102, namely before determining the touch area of touch control operation on a display panel, display device
Fingerprint identification method further includes following step S109：
Step S109：Judge whether touch control operation needs to carry out fingerprint recognition.
In the operating process of display device, fingerprint recognition need not be carried out by having some touch control operations, such as to
The player APP of broadcasting executes the touch control operation etc. of pause, for this type touch control operation, even if detecting, will not determine
The touch area of touch control operation on a display panel can just execute step only when touch control operation needs to carry out fingerprint recognition
S102 determines the touch area of touch control operation on a display panel.
Using the fingerprint identification method for the display device that the embodiment provides, avoid some that from need not carrying out fingerprint recognition
Scene carries out fingerprint recognition, to avoid the unnecessary resource consumption of display apparatus processes device.
In one embodiment, on the basis of embodiment shown in Fig. 2, after step s 102, namely touch-control is being determined
After operation touch area on a display panel, before step S103, namely determine the corresponding luminescence unit in touch area it
Before, the fingerprint identification method of display device further includes following step S110：
Step S110：Judge the area of the touch area of touch control operation on a display panel whether in predetermined effective fingerprint face
In product range.
In the operating process of display device, some maloperations are had, such as are only that operation is touched to display panel,
Touch area is small, and finger print information is less, is unsatisfactory for the requirement of fingerprint recognition, and for another example, operation of multiple fingers to display panel is touched
It is big to control region, is also unsatisfactory for the requirement of single fingerprint recognition, it, can be to touch area after determining touch area to this kind of situation
Area judged, if the area of touch area is too small or too big, not within the scope of scheduled effective fingerprint area, not
Step S103 is executed, only when the area of touch area is within the scope of scheduled effective fingerprint area, can just execute step S103, into
The corresponding luminescence unit in one step touch area.
Using the fingerprint identification method for the display device that the embodiment provides, avoid some that from can not carrying out the field of fingerprint recognition
Scape carries out fingerprint recognition, to avoid the unnecessary resource consumption of display apparatus processes device.
In one embodiment, it sets finger-print region to the square that the length of side is 1 centimetre, is on the one hand determining fingerprint region
Logic is simple when luminescence unit corresponding to domain, the fast response time of fingerprint recognition, on the other hand, the pros that the length of side is 1 centimetre
Substantially close to the fingerprint size of most people, one piece of the offer identification that the luminescence unit that finger-print region covers can be more appropriate refers to shape
Light source needed for line.
In one embodiment, orthographic projection of each finger-print region on backlight module is set and covers a luminescence unit,
One luminescence unit is provided in each finger-print region close to fingerprint size, enough light sources can be provided and to referring to
Luminescence unit control in line region, and it is provided with the suitable quantity of luminescence unit.
It is the embodiment of the fingerprint identification method of display device provided by the invention above, the present invention also provides displays to fill
The embodiment set, it should be noted that any one fingerprint that display device provided by the invention can provide through the invention is known
Other method carries out fingerprint recognition, and the fingerprint identification method of display device provided by the invention can be used for provided by the invention any one
Kind display device, realizes fingerprint recognition.About the embodiment of display device provided by the invention, it is described in detail as follows.
In one embodiment, Fig. 5 is the structural schematic diagram of another display device described in the embodiment of the present invention, is such as schemed
Shown in 5, display device includes：Display panel 10, touch control detection module 30, backlight module 20, monitoring modular 60, control module 40
With fingerprint identification module 50.
Wherein, display panel 10 has display side and non-displaying side, display side is arrow institute in figure in a first direction on c
The direction of finger namely viewing side, non-displaying side are the back side of display panel, and first direction c is flat where display panel 10
Face.
Touch control detection module 30 is used to detect the touch control operation on display panel, and touch control detection module 30 includes detecting electrode
It is shown in 31 and detection circuit 32, Fig. 5 a kind of based on from the touch control detection mode held, 31 receiving test circuit 32 of detecting electrode
Control signal, also to detection circuit 32 feed back detection signal, realize the detection of touch control operation, but the application is not limited to
This, touch control detection module 30 can also be based on other touch control detection modes.
Backlight module 20 includes being set to the non-display of display panel 10 in multiple luminescence units 21 of matrix array distribution
Side, each luminescence unit 21 of backlight module 20 are turned on and off state and the brightness size of unlatching, at least can be not
With independent control between touch area, wherein the touch area region that module 40 is determined according to touch control operation in order to control, namely touch
Control the position of operation.
Monitoring modular 60 is used to monitor the state model of display device, wherein the state model of display device includes display
Pattern and awakening mode, the description as described in display pattern and awakening mode see above related content, and details are not described herein again.Monitor mould
Block 60 can be determined as display pattern or awakening mode by the state of monitoring backlight module 20.
Control module 40 is connected with luminescence unit 21, for when touch control detection module 30 detects touch control operation, really
Determine the touch area of touch control operation on a display panel, and determine the corresponding luminescence unit in touch area 21, wherein touch area
Corresponding at least one luminescence unit 21, the corresponding luminescence unit in touch area are the first luminescence unit, first in backlight module 20
Luminescence unit except luminescence unit is the second luminescence unit, and when monitoring modular 60 monitors that display device is in display pattern
When, increase the brightness of the first luminescence unit, when monitoring modular 60 monitors that display device is in display pattern, the first hair of control
Light unit shines and the second luminescence unit does not shine.
Fingerprint identification module 50 includes the multiple fingerprint Identification sensors 51 and finger prints processing circuit in matrix array distribution
52, in display mode, fingerprint image being identified and obtaining after the brightness that control module 40 increases the first luminescence unit,
Under awakening mode, and second luminescence unit luminous in the first luminescence unit of control of control module 40, which is identified and obtained after not shining, to be referred to
Print image.
It should be noted that detection circuit 32, monitoring modular 60,40 and of control module in above-mentioned touch control detection module 30
Finger prints processing circuit 52 in fingerprint identification module 50 single, two or more can be set in a chip, can also be complete
Portion is integrated in the same chip, and legend is only used for illustrating the various pieces that display device includes in the application, not to tool
The physical arrangement of these parts of body is defined.
Using the embodiment provide display device, fingerprint recognition based on it is a kind of include in matrix array distribution multiple hairs
The backlight module of light unit when carrying out fingerprint recognition, removes detection touch control operation by touch control detection module first, detects touch-control
After operation, control module determines touch area namely the position of fingerprint, then determines the corresponding luminous list in the touch area
Required efficient light sources when member namely fingerprint recognition, the state model being finally presently according to the display device, using difference
The corresponding luminescence unit in the policy control touch area, when display dress in display pattern when, improve the brightness of efficient light sources,
The semaphore of fingerprint recognition is improved, signal interference caused by jamming light source is relatively weakened, fingerprint recognition can be promoted
Precision；When display device is in awakening mode, efficient light sources are only opened, signal interference caused by avoiding jamming light source also can
The precision of fingerprint recognition is enough promoted, while also reducing the power consumption of backlight module.
Further, since touch control detection is able to detect that the touch control operation of full frame any position, then, fingerprint recognition is sensed
Device corresponds to full frame cloth and postpones, and can show the full frame identification of fingerprint, and for the fingerprint recognition of fixed position relative, identification region is more
Greatly so that the application of fingerprint recognition is more flexible extensively.
Fig. 6 is the structural schematic diagram of another display device described in the embodiment of the present invention, in one embodiment, display
Device includes：Display panel, touch control detection module, backlight module, monitoring modular, control module and fingerprint identification module.
As shown in fig. 6, display panel includes the first substrate 11 being oppositely arranged on c in a first direction and second substrate 12,
And the liquid crystal layer 13 between first substrate 11 and second substrate 12.
First substrate 11 is array substrate, including the first metal layer, second metal layer, the first conductive membrane layer and second lead
The structures such as the insulating layer between thin film layer and each layer, wherein the first metal layer is used to form scan line and thin film transistor (TFT)
The pattern of grid, second metal layer are used to form data line and the pattern of thin film transistor source drain, the first conductive membrane layer
It is used to form bar shaped public electrode, which receives public voltage signal in the display stage, is multiplexed in the touch-control stage
For touch drive electrode, touch-control drive signal is received, the second conductive membrane layer is used to form the pattern of pixel electrode, each pixel
Electrode corresponds to a sub-pixel, is provided with slit, wherein public electrode 111 is illustrated only in Fig. 6.
Second substrate 12 is color membrane substrates, including black matrix and color blocking, such as including red, green, blue color blocking.
Principle of the touch control detection module based on mutual tolerance detects touch control operation, and touch drive electrode namely public electrode 111 are set
It is placed in first substrate 11, touch-control sensing electrode 121 is set to a side surface of the second substrate 12 far from first substrate 11, and touch-control drives
B extends moving electrode 111 in a second direction, and touch-control sensing electrode 121 extends along third direction a, touch drive electrode 111 and touch-control
121 omnidirectional distribution of induction electrode.
Each fingerprint Identification sensor 51 of fingerprint identification module is attached at one of first substrate 11 far from second substrate 12
Side surface.
The display device provided using the embodiment, display panel is liquid crystal display panel, passes through liquid crystal display panel
Backlight module provides identification light source, and relatively in organic light emitting display panel, the light offer generated by organic light-emitting units refers to
The light source of line identification, the former reacts faster at brightness regulation.Because in organic light emitting display panel when adjustment region brightness, it is still necessary to
Progressive scan could improve brightness to corresponding position to corresponding sub-pixel charging, can occupy the excessive time；And use the present invention
Display device, by backlight module provide fingerprint recognition light source, needed when determining fingerprint positions improve luminescence unit brightness
Afterwards, corresponding position brightness can be adjusted immediately, response is faster.Also, it is increased for a long time in organic light emitting display panel bright
Degree lights organic light-emitting units, can cause the problem that the display panel service life is reduced and display is uneven.
In one embodiment, display panel presets multiple finger-print regions, each finger-print region on backlight module just
Projection covers several luminescence units, and control module executes following steps when determining the corresponding luminescence unit in touch area：It determines
The finger-print region with touch area with lap, as the first finger-print region；Determine all first finger-print regions in backlight
The luminescence unit that orthographic projection in module is covered is the first luminescence unit.
In one embodiment, control module is executing the step for determining the finger-print region for having lap with touch area
In rapid, two or more the first finger-print regions are obtained, wherein two or more first finger-print regions include the first finger
Line region first and the first finger-print region second, wherein the lap of the first finger-print region first and touch area is more than the first fingerprint
The lap of region second and touch area；Control module is the step of executing the brightness for increasing the first luminescence unit or control the
When the step that one luminescence unit shines, following steps are specifically executed：The brightness for controlling the first luminescence unit first shines less than second
The brightness of unit second, wherein the first luminescence unit first is covered by orthographic projection of the first finger-print region first on backlight module
Luminescence unit, the luminescence unit that the first luminescence unit second is covered by orthographic projection of the first finger-print region second on backlight module.
Using the embodiment provide display device, when the position namely touch area of touch control operation, at the same with two or
When more than two finger-print regions have lap, luminous list that the finger-print region small with touch area lap is covered
The brightness of member is set as larger brightness, can provide enough light sources for this smaller part of touch area, and due to touch-control
Region is few compared with this small part fingerprint content itself, not easy to identify, by the incident light for increasing this smaller part of touch area
It measures and increases fingerprint signal amount, accuracy of identification can be improved；The finger-print region big with touch area lap is covered
The brightness of luminescence unit be set as smaller brightness, the work(of light source corresponding to this larger part of touch area can be reduced
Consumption easily identifies and since this larger part of touch area fingerprint content itself, by reducing smaller this in touch area
The fingerprint signal amount of partial incident light quantity, reduction has substantially no effect on fingerprint recognition precision.For generally, by differential
The first luminescence unit of control brightness, avoid power wastage while improving discrimination, improve backlight module on the whole
Utilization rate.
By above-described embodiment it is found that the display device and its fingerprint identification method of the present invention, have reached as follows beneficial
Effect：Fingerprint recognition based on it is a kind of include in matrix array distribution multiple luminescence units backlight module, carry out fingerprint recognition
When, touch control operation is detected first, and after detecting touch control operation, touch area namely the position of fingerprint are determined in control, are then determined
Go out required efficient light sources when the corresponding luminescence unit in the touch area namely fingerprint recognition, finally according to the display device when
Preceding state in which pattern, using the corresponding luminescence unit in the different policy controls touch area, when display device is in aobvious
When showing pattern, the brightness of efficient light sources is improved, the semaphore of fingerprint recognition is improved, caused by relatively weakening jamming light source
Signal interference can promote the precision of fingerprint recognition.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, apparatus or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, the present invention can be used in one or more wherein include computer usable program code computer
The computer program production implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
Although some specific embodiments of the present invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to illustrating, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above example.This hair
Bright range is defined by the following claims.
Claims (13)
1. a kind of fingerprint identification method of display device, which is characterized in that the display device includes display panel and backlight mould
Block, the backlight module include in multiple luminescence units of matrix array distribution, and the luminescence unit is provided needed for fingerprint recognition
Light source, the method includes：
Detect the touch control operation on the display panel；
When detecting the touch control operation, the touch area of the touch control operation on said display panel is determined；
Determine the corresponding luminescence unit in the touch area, wherein the touch area corresponds at least one described luminous
Unit, the corresponding luminescence unit in the touch area is the first luminescence unit, and first shines described in the backlight module
The luminescence unit except unit is the second luminescence unit；
Monitor the state model of the display device, wherein the state model of the display device includes display pattern；
When the display device is in the display pattern, increase the brightness of first luminescence unit；And
It is identified after the brightness for increasing first luminescence unit and obtains fingerprint image.
2. the fingerprint identification method of display device according to claim 1, which is characterized in that
The state model of the display device further includes awakening mode, and the method further includes：When the display device is in institute
It when stating awakening mode, controls that first luminescence unit shines and second luminescence unit does not shine, and is controlling described the
It is identified after one luminescence unit shines and second luminescence unit does not shine and obtains fingerprint image.
3. the fingerprint identification method of display device according to claim 2, which is characterized in that
The display panel presets multiple finger-print regions, orthographic projection covering of each finger-print region on the backlight module
Several luminescence units, the step of determining the corresponding luminescence unit in the touch area include：
The finger-print region that there is lap with the touch area is determined, as the first finger-print region；
Determine that luminescence unit that orthographic projection of all first finger-print regions on the backlight module is covered is described the
One luminescence unit.
4. the fingerprint identification method of display device according to claim 3, which is characterized in that
In the step of determining the finger-print region that there is lap with the touch area, two or more are obtained
First finger-print region, wherein described two or more than two first finger-print regions include the first finger-print region first and first
Finger-print region second, wherein the first finger-print region first and the lap of the touch area are more than first fingerprint region
The lap of domain second and the touch area；
The step of increasing the brightness of first luminescence unit or the luminous step of control first luminescence unit include：
The brightness for controlling the first luminescence unit first is less than the brightness of the second luminescence unit second, wherein the first luminescence unit first
The luminescence unit covered by orthographic projection of the first finger-print region first on the backlight module, first luminescence unit
The luminescence unit that second is covered by orthographic projection of the first finger-print region second on the backlight module.
5. the fingerprint identification method of display device according to claim 1, which is characterized in that
After detecting the touch control operation, before determining the touch area of the touch control operation on said display panel,
The method further includes：Judge whether the touch control operation needs to carry out fingerprint recognition；
Wherein, when the touch control operation needs to carry out fingerprint recognition, determine the touch control operation on said display panel
Touch area.
6. the fingerprint identification method of display device according to claim 1, which is characterized in that
After determining the touch area of the touch control operation on said display panel, the corresponding institute in the touch area is determined
Before stating luminescence unit, the method further includes：Judge the face of the touch area of the touch control operation on said display panel
Whether product is making a reservation within the scope of effective fingerprint area；
Wherein, only the Touch Zone is determined when the area of the touch area is in described make a reservation within the scope of effective fingerprint area
The corresponding luminescence unit in domain.
7. the fingerprint identification method of display device according to claim 3, which is characterized in that
The finger-print region is the square that the length of side is 1 centimetre.
8. the fingerprint identification method of display device according to claim 7, which is characterized in that
Orthographic projection of each finger-print region on the backlight module covers a luminescence unit.
9. a kind of display device, which is characterized in that including：
Display panel, in a first direction, the display panel have a display side and non-displaying side, the first direction perpendicular to
Plane where the display panel；
Touch control detection module, for detecting the touch control operation on the display panel；
Backlight module includes the multiple luminescence units being distributed in matrix array, is set to the non-displaying side of the display panel；
Monitoring modular, the state model for monitoring the display device, wherein the state model of the display device includes aobvious
Show pattern；
Control module is connected with the luminescence unit, for when the touch control detection module detects the touch control operation,
It determines the touch area of the touch control operation on said display panel, and determines the corresponding luminous list in the touch area
Member, wherein the touch area corresponds at least one luminescence unit, and the corresponding luminescence unit in the touch area is
First luminescence unit, the luminescence unit except the first luminescence unit described in the backlight module are the second luminescence unit,
And when the monitoring module monitors to the display device are in the display pattern, increase the bright of first luminescence unit
Degree；
Fingerprint identification module, the fingerprint identification module include being used in multiple fingerprint Identification sensors of matrix array distribution
It is identified after the brightness that the control module increases first luminescence unit and obtains fingerprint image.
10. display device according to claim 9, which is characterized in that
The display panel includes the first substrate and second substrate being oppositely arranged in said first direction, the fingerprint recognition
Sensor is set to side of the first substrate far from the second substrate, or is integrated in the first substrate.
11. display device according to claim 9, which is characterized in that
The state model of the display device further includes awakening mode, and the control module is additionally operable to work as the monitoring module monitors
When being in the display pattern to the display device, control first luminescence unit shine and second luminescence unit not
It shines；
The fingerprint identification module is additionally operable to shine in control module control first luminescence unit and described second sends out
Light unit identifies after not shining and obtains fingerprint image.
12. display device according to claim 11, which is characterized in that
The display panel presets multiple finger-print regions, orthographic projection covering of each finger-print region on the backlight module
Several luminescence units, the control module execute following step when determining the corresponding luminescence unit in the touch area
Suddenly：
The finger-print region that there is lap with the touch area is determined, as the first finger-print region；
Determine that luminescence unit that orthographic projection of all first finger-print regions on the backlight module is covered is described the
One luminescence unit.
13. display device according to claim 12, which is characterized in that
The control module obtains in the step of executing the finger-print region for determining and having lap with the touch area
To the first finger-print region described in two or more, wherein described two or more than two first finger-print regions include first
Finger-print region first and the first finger-print region second, wherein the first finger-print region first and the lap of the touch area are big
In the lap of the first finger-print region second and the touch area；
The control module is the step of executing the brightness for increasing first luminescence unit or control first luminescence unit
When luminous step, following steps are specifically executed：
The brightness for controlling the first luminescence unit first is less than the brightness of the second luminescence unit second, wherein the first luminescence unit first
The luminescence unit covered by orthographic projection of the first finger-print region first on the backlight module, first luminescence unit
The luminescence unit that second is covered by orthographic projection of the first finger-print region second on the backlight module.
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| CN111144268A (en) * | 2019-12-23 | 2020-05-12 | 厦门天马微电子有限公司 | Fingerprint identification method of display panel, display panel and display device |
| CN111144268B (en) * | 2019-12-23 | 2022-09-20 | 厦门天马微电子有限公司 | Fingerprint identification method of display panel, display panel and display device |
| CN113257189A (en) * | 2020-02-10 | 2021-08-13 | 敦泰电子股份有限公司 | Unlocking method of optical under-screen fingerprint mobile device |
| CN111339900A (en) * | 2020-02-21 | 2020-06-26 | Oppo广东移动通信有限公司 | Method and device for controlling fingerprint under screen, display equipment and storage medium |
| CN111240062A (en) * | 2020-03-20 | 2020-06-05 | Oppo广东移动通信有限公司 | Liquid crystal display screen integrating fingerprint identification function and electronic device |
| CN111240062B (en) * | 2020-03-20 | 2023-04-07 | Oppo广东移动通信有限公司 | Liquid crystal display screen integrating fingerprint identification function and electronic device |
| CN111552108A (en) * | 2020-06-08 | 2020-08-18 | 京东方科技集团股份有限公司 | Display device and fingerprint identification method thereof |
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