CN107958650A - Biological sensing module and its drive circuit, electronic equipment - Google Patents
Biological sensing module and its drive circuit, electronic equipment Download PDFInfo
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- CN107958650A CN107958650A CN201710708266.5A CN201710708266A CN107958650A CN 107958650 A CN107958650 A CN 107958650A CN 201710708266 A CN201710708266 A CN 201710708266A CN 107958650 A CN107958650 A CN 107958650A
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- display pixel
- sensor devices
- display
- drive circuit
- panel
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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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
Abstract
The present invention discloses a kind of biological sensing module and its drive circuit, electronic equipment, and biological sensing module includes display panel and the photosensitive panel being stacked with the display panel；The display panel includes multiple display pixels；The photosensitive panel includes multiple sensor devices；Pixel shown by each sensor devices face one is set；For the drive circuit when drive part display pixel is lighted at the same time, the sensor devices of display pixel face of the driving with extinguishing perform light sensing.Electronic equipment includes the biological sensing module.
Description
Technical field
The present invention relates to a kind of biological sensing module and its biological information method for sensing, electronic equipment.
Background technology
At present, biometric information sensor, especially fingerprint Identification sensor, have been increasingly becoming the electronic products such as mobile terminal
Standard configuration component.Since optical fingerprint identification sensor specific capacitance formula fingerprint Identification sensor has stronger penetration capacity,
Therefore it has been proposed that a kind of optical fingerprint applied to mobile terminal identifies module.As shown in Figure 1, the optical fingerprint identifies
Module includes optical fingerprint sensor 400 and light source 402.Wherein, which is arranged at mobile terminal
The lower section of cover sheet 401.The side that the light source 402 closes on the optical fingerprint identification sensor 400 is set.When the hand of user
When referring to F contact protection cover boards 401, the optical signal that light source 402 is sent through cover sheet 401 and reaches finger F, by finger F
Valley and a ridge reflection after, received by optical fingerprint identification sensor 400, and form the fingerprint bio characteristic information of finger F.
So, above-mentioned optical finger print identification module can only limit to the presumptive area for being arranged on mobile terminal, such as mobile terminal
Non-display area in, it is necessary to fingerprint recognition could be carried out by contacting the presumptive area, and use is still limited.
The content of the invention
Embodiment of the present invention is intended at least solve one of technical problem existing in the prior art.For this reason, the present invention is real
The mode of applying needs to provide a kind of biological sensing module and its biological information method for sensing, electronic equipment.
Embodiment of the present invention provides a kind of drive circuit of biological sensing module, and the biological sensing module includes display
Panel and the photosensitive panel being stacked with the display panel；The display panel includes multiple display pixels；The photosurface
Plate includes multiple sensor devices；Pixel shown by each sensor devices face one is set；The drive circuit is shown in drive part
When showing that pixel is lighted at the same time, the sensor devices of display pixel face of the driving with extinguishing perform light sensing.
The display that embodiment of the present invention passes through sensor devices and display panel to the photosensitive panel of drive circuit driving
Pixel cooperative work, so as to improve the sensing precision of biological sensing module.
In some embodiments, the sensor devices are used to receive optical signal, and it is electricity to change the optical signal received
Signal；The drive circuit further comprises signal processing unit, and the signal processing unit is received to be exported from sensor devices
Electric signal, and according to the electric signal obtain contact or close to the biological sensing module target object predetermined biological characteristic believe
Breath.
In some embodiments, the display pixel is in array distribution, and the display pixel presses odd-numbered line and even number
Row correspondence is divided into the first display pixel groups and the second display pixel groups, when the drive circuit drives photosensitive panel to perform light sensing
When, the drive circuit drives the display pixel of same display pixel groups to light at the same time, drives the display of different display pixel groups
Pixel is non-concurrent to be lighted.
In some embodiments, when the drive circuit is driven in first display pixel groups and the second display pixel groups
A display pixel groups display pixel lighting time reach preset time after, then drive the display of another display pixel groups
Pixel is lighted at the same time.
In some embodiments, the multiple sensor devices are arranged in array, and the sensor devices by odd-numbered line and
Even number line, which corresponds to, is divided into the first sensor devices group and the second sensor devices group, wherein, each row sense of the first sensor devices group
Optical device and each row display pixel difference face of first display pixel groups are set, each row of the second sensor devices group
Sensor devices and each row display pixel difference face of second display pixel groups are set；The drive circuit is further used
In：When the display pixel of the first display pixel groups is lighted at the same time, the sensor devices in the second sensor devices group are driven to hold line by line
Row light sensing；When the display pixel of the second display pixel groups is lighted at the same time, drive line by line photosensitive in the first sensor devices group
Device performs light sensing.
By the way that display pixel is divided into the first display pixel groups and the second display pixel groups by odd-numbered line and even number line, from
And drive the first display pixel groups to light at the same time, and drive the corresponding sensor devices of the second display pixel groups to perform light sensing；So
After drive the second display pixel groups to light at the same time, the corresponding sensor devices of the first display pixel groups of driving perform light sensing.So
So that the drive circuit of display pixel is simpler, the sensing efficiency of biological information is accelerated.In addition, one group of display pixel
When lighting at the same time, multiple sensor devices of sensor devices group are progressively scanned, to drive a line sensor devices to perform light at the same time every time
Sensing, so as to accelerate the drive efficiency of drive circuit.
In some embodiments, the biological sensing module further comprises touch sensor, the drive circuit into
One step is used to drive the touch sensor to perform touch-sensing, when detecting that target object touches or close to the biological sensing
During module, touch area of the target object on biological sensing module is determined, sent out with the display pixel of the corresponding touch area of driving
Light and sensor devices perform light sensing.Therefore, when driving photosensitive panel to perform light sensing, it is not necessary to whole photosensitive panel into
Row scanning, so as to accelerate the biological information sensed speed of biological sensing module, can drive sense within the limited time
Optic panel performs Multiple-Scan, and then also improves the biological information sensing precision of biological sensing module.
In some embodiments, the drive circuit is integrated in one or several chips；Or, in the drive circuit
Partial circuit be integrated in a chip or several chips.
Embodiment of the present invention provides a kind of biological sensing module, including display panel and is set with display panel stacking
The photosensitive panel put；The display panel includes multiple display pixels；The photosensitive panel includes multiple sensor devices；It is each photosensitive
Pixel shown by device face one is set：The biological sensing module further comprises the driving electricity of above-mentioned any one embodiment
Road, the drive circuit are used to drive display pixel to light and drive sensor devices to perform light sensing.
In the biological sensing module of embodiment of the present invention, the optical signal that photosensitive panel is sent using display panel realizes mesh
Mark the biological information sensing of object, it is not necessary to light source is additionally set, so that the cost of biological sensing module is not only saved,
And also achieve the target object progress biological information sensing for docking tactile or touch display panel optional position.In addition,
By processor to the Cooperation controlling between display driver element and photosensitive driving unit, the sensing of biological information is improved
Precision.
In some embodiments, the display pixel is in array distribution, and the display pixel presses odd-numbered line and even number
Row correspondence is divided into the first display pixel groups and the second display pixel groups, when the photosensitive panel performs light sensing, the driving
The display pixel of the same display pixel groups of circuit drives is lighted at the same time, drives the non-concurrent point of display pixel of different display pixel groups
It is bright.
In some embodiments, when the drive circuit is driven in first display pixel groups and the second display pixel groups
A display pixel groups display pixel lighting time reach the scheduled time after, then drive the display of another display pixel groups
Pixel is lighted at the same time.
In some embodiments, the multiple sensor devices are arranged in array, and sensor devices press odd-numbered line and even number
Row correspondence is divided into the first sensor devices group and the second sensor devices group, wherein, each row photoreceptor of the first sensor devices group
Part and each row display pixel difference face of first display pixel groups are set, and each row of the second sensor devices group is photosensitive
Device and each row display pixel difference face of second display pixel groups are set；In the display pixel of the first display pixel groups
When lighting at the same time, which drives the sensor devices in the second sensor devices group to perform light sensing line by line；In the second display
When the display pixel of pixel groups is lighted at the same time, which drives the sensor devices in the first sensor devices group to perform light line by line
Sensing.
By the way that display pixel is divided into the first display pixel groups and the second display pixel groups by odd-numbered line and even number line, from
And drive the first display pixel groups to light at the same time, and drive the corresponding sensor devices of the second display pixel groups to perform light sensing；So
After drive the second display pixel groups to light at the same time, the corresponding sensor devices of the first display pixel groups of driving perform light sensing.So
So that the driving of display pixel is simpler, the sensing efficiency of biological information is accelerated.In addition, one group of display pixel is at the same time
When lighting, multiple sensor devices of sensor devices group are progressively scanned, to drive a line sensor devices to perform light sensing at the same time every time,
So as to accelerate the sensing efficiency of biological information.
In some embodiments, the photosensitive panel is located at the top of the display panel, or the photosensitive panel
Positioned at the lower section of the display panel.
In some embodiments, the display panel has display area；The photosensitive panel is used to perform to display
The biological information sensing of the target object of optional position in the display area of panel；Alternatively, the photosensitive panel has sense
Survey region, and the shape of the sensing region is consistent with the shape of the display area, the size of the sensing region be less than or
Equal to the size of the display area.
In some embodiments, the display panel has a biological sensing region, and the photosensitive panel, which corresponds to, to be located at
The lower section in biological sensing region.
In some embodiments, the touch that the biological sensing module further comprises being connected with the drive circuit passes
Sensor.When detecting target object touch or close to the biological sensing module, determine target object in biological sensing module 1
On touch area, lighted with the display pixel of the corresponding touch area of driving and sensor devices perform light sensing.Therefore, driving
When dynamic optic panel performs light sensing, it is not necessary to which whole photosensitive panel is scanned, so as to accelerate the life of biological sensing module
Thing characteristic information sensed speed, can drive photosensitive panel to perform Multiple-Scan within the limited time, and then also improve life
The biological information sensing precision of thing sensing module.
Embodiment of the present invention provides a kind of electronic equipment, includes the biological sensing module of above-mentioned any one embodiment.
In this way, the electronic equipment with above-mentioned biological sensing module with all beneficial effects.
The additional aspect and advantage of embodiment of the present invention will be set forth in part in the description, partly by from following
Become obvious in description, or recognize by the practice of embodiment of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of embodiment of the present invention retouch embodiment from reference to accompanying drawings below
It will be apparent and be readily appreciated that in stating, wherein：
Fig. 1 is a kind of signal of optical biologic characteristic information sensing structure applied to electronic equipment of the prior art
Figure；
Fig. 2 is the partial structural diagram of the biological sensing module of an embodiment of the present invention；
Fig. 3 is the structure diagram of the drive circuit of an embodiment of the present invention；
Fig. 4 is the structure diagram of the photosensitive panel of an embodiment of the present invention；
Fig. 5 be an embodiment of the present invention photosensitive panel in sensor devices and the driving of display pixel in display panel show
It is intended to；
Fig. 6 be the present invention biological sensing module perform biological information sensing when, the sensor devices of photosensitive panel and
One driving process schematic of the display pixel of display panel；
When Fig. 7 is that the biological sensing of the present invention performs biological information sensing, the sensor devices of photosensitive panel and display
Another driving process schematic of the display pixel of panel；
Fig. 8 is that the biological sensing module of an embodiment of the present invention is applied to the positive structure schematic of electronic equipment；
Fig. 9 is cross-sectional view of the electronic equipment along I-I lines in Fig. 8, wherein illustrate only the portion of electronic equipment
Separation structure；
Figure 10 be the display panel of an embodiment of the present invention display area and photosensitive panel sensing region correspondence
Relation schematic diagram；
Figure 11 is that the biological sensing module of another embodiment of the present invention is applied to the positive structure schematic of electronic equipment；
Figure 12 is cross-sectional view of the electronic equipment along I-I lines in Figure 11, wherein illustrate only electronic equipment
Part-structure.
Embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is same or like element.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that term " first ", " second " are only used for description purpose, and cannot
It is interpreted as indicating or implies relative importance or imply the quantity of the technical characteristic indicated by indicating.Thus, define " the
One ", one or more feature can be expressed or be implicitly included to the feature of " second ".In description of the invention
In, " multiple " are meant that two or more, unless otherwise specifically defined." contact " or " touch " includes direct
Contact or mediate contact.For example, the biological sensing module hereinafter disclosed, it is arranged on the inside of electronic equipment, such as protects
The lower section of protecting cover plate, then user's finger pass through the cover sheet mediate contact biological sensing module.
In the description of the present invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection or can be in communication with each other；It can be directly connected, can also be by between intermediary
Connect connected, can be the interaction relationship of connection inside two elements or two elements.For the ordinary skill of this area
For personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.In order to
Simplify disclosure of the invention, hereinafter to the components of specific examples and be set for describing.Certainly, they are merely examples, and
And it is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, itself not indicate between discussed various embodiments and/or setting
Relation.In addition, the present invention provides various specific techniques and material examples, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
Further, described feature, structure can be incorporated in one or more embodiment party in any suitable manner
In formula.In the following description, there is provided many details fully understand embodiments of the present invention so as to provide.So
And one of ordinary skill in the art would recognize that, without one or more in the specific detail, or using other structures,
Constituent element etc., can also put into practice technical scheme.In other cases, it is not shown in detail or describes known features or behaviour
Make to avoid the fuzzy present invention.
Embodiment of the present invention proposes a kind of biological sensing module for realizing biological information sensing, the biological sensing mould
Group can realize image display, and can also realize the biological characteristic for obtaining contact or the target object close to biological sensing module
Information.
In some embodiments, it refer to Fig. 2 and Fig. 3, Fig. 2 show the biological sensing mould of an embodiment of the present invention
The structure of group, Fig. 3 show the structure of the biological sensing module of another embodiment of the present invention.The biological sensing module 1 includes
One display panel 100 and photosensitive panel 200.Wherein display panel 100 and photosensitive panel 200 is stacked.
Specifically, display panel 100 includes multiple display pixels 12.The display pixel 12 is such as, but not limited in array point
Cloth, i.e., be distributed by ranks.The plurality of display pixel 12 is lighted and sends varying strength and the optical signal of different colours, so that real
Existing image display.
Photosensitive panel 200 is stacked with display panel 100, and photosensitive panel 200 be located at display panel 100 top or
Lower section, for sensing optical signal, is believed with obtaining the predetermined biological characteristic of the target object touched or close to biological sensing module 1
Breath.Further, which includes a substrate 26 and the multiple sensor devices 220 being formed in substrate 26, photosensitive
Device 220 is used to receive optical signal, and the optical signal received is converted to corresponding electric signal.Substrate 26 may include transparent base
It is exhausted that two kinds of bottom and nontransparent substrate, wherein transparent substrates are such as, but not limited to substrate of glass, plastic-substrates, crystal, sapphire etc.
Edge substrate, nontransparent substrate are such as, but not limited to silicon base, printed circuit board (PCB), metallic substrates etc..In addition, the substrate 26 can be
Rigid, or flexible material, such as fexible film.If substrate 26 is flexible material, the photosensitive panel 200 is not only
Thickness is thinning, and can be applicable to have in the electronic equipment of camber display screen.
In embodiment of the present invention, since photosensitive panel 200 is located at the top of display panel 100, in order not to influence to show
Show the display of panel 100, photosensitive panel 200 is equipped with the first transmission region P1, and the first transmission region P1 and display pixel 12 are right
It should set, so that the optical signal that display panel 100 is sent passes through.Moreover, sensor devices 220 are translucent construction, and it is arranged at this
In first transmission region P1, that is, it is corresponding positioned at the top of display pixel 12.
When the biological sensing module 1 works, display pixel 12 sends optical signal, to perform image display.When the biology is felt
Survey the top of module 1 and place a target object, such as finger, due to blocking for target object, be irradiated to the optical signal of target object
It will reflect, the optical signal reflected is received by sensor devices 220, and sensor devices 220 change the optical signal received
For corresponding electric signal, according to the electric signal, you can obtain the biological information of target object.
The biological information of above-mentioned target object is such as, but not limited to the skin lines such as fingerprint, palmmprint, ear line, sole letter
Breath, and the other biological characteristic information such as heart rate, blood oxygen concentration, vein.Target object is such as, but not limited to human body, or
The object of other suitable types.
Further, biological sensing module 1 further includes one drive circuit 30, which is used to drive display pixel
2 light, and driving sensor devices 220 perform light sensing.Specifically, the drive circuit 30 is used for drive part display pixel 12
When lighting at the same time, the sensor devices 220 of display pixel 12 face of the driving with extinguishing perform sensing.
Since sensor devices 220 and display pixel 12 are correspondingly arranged, if display pixel 12 is lighted, with the display picture
Plain 12 corresponding sensor devices 220 not only sense the optical signal that target object reflects, and can also sense display pixel 12
The optical signal sent, so that the optical signal that display panel 100 is sent interferes the biological information sensing of target object.
Therefore, embodiment of the present invention drives 220 cooperative work of display pixel 12 and sensor devices by drive circuit 30, improves biology
Sense the sensing precision of module 1.
In some embodiments, which specifically may include display driver element 31, photosensitive driving unit 32
And controller 33.Wherein display driver element 31 is used to provide display drive signals to multiple display pixels 12, aobvious to drive
Show that pixel 12 is lighted.Photosensitive driving unit 32 is used to provide photosensitive drive signal to multiple sensor devices 220, to drive photoreceptor
Part 220 performs light sensing.Controller 33 is used for the sequential for controlling display driver element 31 to provide display drive signals, and control
Photosensitive driving unit 32 provides the sequential of photosensitive drive signal, so that when display pixel 12 is lighted, with the display pixel 12
Corresponding sensor devices 220 do not perform light sensing；When display pixel 12 is extinguished, with the 12 corresponding sensor devices of display pixel
220 perform light sensing.
Further, which still further comprises signal processing unit 34, which is used for
The electric signal exported from sensor devices 220 is received, and contact is obtained or close to the biological sensing module 1 according to the electric signal
The predetermined biological information of target object.
It is understood that drive circuit 30 is not limited to the above-mentioned each several part circuit unit referred to, according to actual functional capability need
Other circuit units can also be set, do not repeated one by one herein.In addition, each several part circuit part can also realize other work(
Energy.
In some embodiments, drive circuit 30 can be integrated in one or several chips, such as display driver element
31st, photosensitive driving unit 32, controller 33, signal processing unit 34 are each integrates in corresponding functional chip.Alternatively, drive circuit
Partial circuit in 30 is integrated in a chip or several chips, remaining circuit is arranged at display panel 100 or photosensitive panel
On 200.
Further, the structure of the photosensitive panel of an embodiment of the present invention is shown with reference to Fig. 4, Fig. 4.The photosensitive panel
200 further comprise multiple sensor devices 220 and the scanline groups being electrically connected with multiple sensor devices 220 and data cable
Group, wherein scanline groups include multi-strip scanning line 201, and data line group includes a plurality of data lines 202.The plurality of sensor devices 220
In array distribution, such as matrix distribution.It is of course also possible to it is the distribution of other regular fashions or non-regular distribution.With it is photosensitive
Multi-strip scanning line 201 and a plurality of data lines 202 that device 220 is electrically connected then intersect setting, and are arranged on adjacent sense
Between optical device 220.For example, multi-strip scanning line G1, G2 ... Gm is laid along Y-direction interval, and a plurality of data lines S1, S2 ... Sn is along X
Lay at direction interval.So, change ground, the multi-strip scanning line 201 do not limited with a plurality of data lines 202 shown in Fig. 5 it is vertical
Set, setting that can also be at an angle, such as 30 °, 60 ° etc..Led further, since scan line 201 and data cable 202 have
Electrically, therefore between the scan line 201 and data cable 202 that are in the crossed position will be isolated by insulating materials.
It should be noted that above-mentioned scan line 201 and the distribution of data cable 202 and the setting of quantity are not limited to
An illustrative embodiments is stated, corresponding scanline groups sum number can be correspondingly arranged according to the difference of the structure of sensor devices 220
According to line group.
In some embodiments, multi-strip scanning line 201 is all connected with photosensitive driving unit 32, and a plurality of data lines 202 connects
Connect a signal processing unit 34.Photosensitive driving unit 23 is used to provide corresponding scanning drive signal, and passes through corresponding scanning
Line 201 is transferred to corresponding sensor devices 220, and light sensing is performed to activate the sensor devices 220.Photosensitive 32 shape of driving unit
Into in substrate 26, naturally it is also possible to be electrically connected, that is, connected with sensor devices 220 by connector (for example, flexible PCB)
Connect multi-strip scanning line 201.Signal processing unit 34 receives phase by connector (for example, flexible PCB) by data cable 202
The electric signal that the sensor devices 220 answered perform light sensing and produce, and the biological special of target object is obtained according to the electric signal
Reference ceases.Certainly, which can also be formed in substrate 26.
Fig. 5 is refer to, Fig. 5 shows in an embodiment of the present invention and shown in photosensitive panel in sensor devices and display panel
Show the driving condition of pixel, it is necessary to illustrate, the distribution of display pixel and photosensitive panel in the display panel illustrated
The distribution of middle sensor devices is not limited thereto, and can also have other distributed architectures.By provide one scan drive signal to
One scan line 201a, works so as to drive with the scan line 201a sensor devices 220 being connected, and performs light sensing.At this time,
The display pixel 12b of the lower section of sensor devices 220 is not lighted, for being passed through for the optical signal reflected through target object.For
Realize light sensing, then light the display pixel 12 of the neighbouring a line of display pixel 12b, such as display pixel 12a.
In some embodiments, when control is lighted with display pixel 12a neighbouring display pixel 12b, control shows picture
Plain 12a timesharing is lighted.When being lighted by controlling 12 timesharing of display pixel so that the optical signal reflected by target object
Disturb less, that is, interfering with each other for the optical signal that is received between adjacent sensor devices 220 is avoided, so as to improve biological sense
Survey the sensing precision of module 1.
In some embodiments, display pixel 12 is in array distribution, i.e., multiple display pixels 12 are distributed by ranks.When
So, which can also other regular arrays.In the control for performing light sensing, the display pixel 12 by odd-numbered line and
Even number line, which corresponds to, is divided into the first display pixel groups and the second display pixel groups, i.e., the display pixel of all odd-numbered lines is one group,
The display pixel of all even number lines is another group.When the biological sensing module 1 performs light sensing, the drive circuit 30
(such as display driver element 31) drives the display pixel of same display pixel groups to light at the same time, drives different display pixel groups
Display pixel is non-concurrent to be lighted.Specifically, when the drive circuit 30 drives first display pixel groups and the second display pixel
After the lighting time of the display pixel of a display pixel groups in group reaches preset time, another display pixel groups are then driven
Display pixel is lighted at the same time.
Accordingly, since each sensor devices 220 and a display pixel 12 are correspondingly arranged, the sensor devices 220
In array distribution, i.e., multiple sensor devices 220 are distributed by ranks.Divide moreover, sensor devices 220 are corresponded to by odd-numbered line and even number line
Into the first sensor devices group and the second sensor devices group, wherein, each row sensor devices of the first sensor devices group with it is described
Each row display pixel difference face of first display pixel groups is set, each row sensor devices of the second sensor devices group and institute
Each row display pixel difference face for stating the second display pixel groups is set.Lighted at the same time in the display pixel of the first display pixel groups
When, which drives the sensor devices in the second sensor devices group to perform light line by line
Sensing；When the display pixel of the second display pixel groups is lighted at the same time, which drives the first sensor devices group line by line
In sensor devices perform light sensing.
Further, in some embodiments, due to target object, such as finger, whole photosensitive panel 200 is only accounted for
A part of region, therefore when driving photosensitive panel 200 to perform light sensing, it is not necessary to whole photosensitive panel 200 is scanned, because
This, biological sensing module further comprises the touch sensor (not shown) being connected with drive circuit 30, the driving electricity
Road 30 is further used for driving the touch sensor to perform touch-sensing, when detecting that target object touches or close to the life
When thing senses module, touch area of the target object on biological sensing module 1 is determined, with the display of the corresponding touch area of driving
Pixel 12 is lighted and sensor devices 220 perform light sensing.In this way, accelerate the biological information sensing of biological sensing module
Speed, can drive photosensitive panel 200 to perform Multiple-Scan within the limited time, and then also improve biological sensing module
Biological information senses precision.
Further, the often work of row sensor devices in photosensitive panel 200 is shown in reference Fig. 6 and Fig. 7, Fig. 6 and Fig. 7
The every working status of row display pixel in state and display panel 100.Due in photosensitive panel 200 sensor devices (not shown) and
Display pixel (not shown) is correspondingly arranged in display panel 100, therefore photosensitive panel 200 includes 11 row sensor devices, display surface
Plate 100 includes 11 row display pixel corresponding with sensor devices.For example, the 1st row, the 3rd row, the 5th row ... in display panel 100
The display pixel of 11 rows is the first display pixel groups；2nd row, the 4th row, the 10th row of the 6th row ..., the display pixel of the 12nd row are the
Two display pixel groups.The 1st row, the 3rd row, the sensor devices of the 11st row of the 5th row ... are the first sensor devices in photosensitive panel 200
Group；2nd row, the 4th row, the 6th row, eighth row, the 10th row, the sensor devices of the 12nd row are the second sensor devices group.
When performing light sensing, control the display panel and the display pixel of 1 row is spaced in 100 lights at the same time, remaining display
Pixel is extinguished.As shown in Figure 6, there is provided display drive signals give the display pixel of the first display pixel groups, that is, drive display panel
The 1st row, the 3rd row, the display pixel of the 11st row of the 5th row ... are lighted at the same time in 100.Since the second display pixel groups do not have offer to sweep
Drive signal is retouched, then the 2nd row, the 10th row of the 4th row ..., the display pixel of the 12nd row are extinguished in display panel 100.Sense is provided line by line
Optical drive signal gives the sensor devices of the second sensor devices group, i.e., drives the 2nd row, the 4th row, the 6th in photosensitive panel 200 successively
Row, eighth row, the 10th row, the sensor devices of the 12nd row perform light sensing.When the sensor devices of the 12nd row have performed light sensing,
I.e. the scheduled time reaches, and the display pixel of the second display pixel groups of driving is lighted at the same time, the display pixel of the first display pixel groups
Extinguish.As shown in fig. 7, the 2nd row, the 4th row, the 10th row of the 6th row ..., the display pixel of the 12nd row are same in driving display panel 100
When light, the 1st row in display panel 100, the 11st row display pixel of the 3rd row ... are extinguished；Drive line by line the 1st in photosensitive panel 200
Row, the sensor devices of the 3rd row, the 11st row of the 5th row ... perform light sensing.In this way, by loop control twice, i.e., it is pre- by two
Fix time, then complete all sensor devices in photosensitive panel 200 and perform a light sensing.
Certainly, embodiment of the present invention can also use other control modes, such as line by line or interlacing control photoreceptor
Part performs light sensing, if the sensor devices of current line will perform light sensing, controls the corresponding display of sensor devices of current line
Pixel is not lighted, and the display pixel of 1 row, remaining display pixel are not lighted then near the display pixel.So, it is possible to reduce more
Remaining optical signal performs light sensing to the sensor devices of current line and interferes.
Further, the structure of the electronic equipment of an embodiment of the present invention is shown with reference to Fig. 8 and Fig. 9, Fig. 8, Fig. 9 shows
Cross-section structure of the electronic equipment along I-I lines shown in Fig. 8 is gone out, and Fig. 9 illustrate only the part-structure of electronic equipment.The electricity
Sub- equipment is equipped with above-mentioned any one biological sensing module for implementing structure, the not only image display for electronic equipment, but for pair
The biological information of contact or target object close to electronic equipment is sensed.
Electronic equipment for example but is not limited to consumption electronic products, household formula electronic product, vehicular electronic product, gold
Melt the electronic product of the suitable types such as end product.Wherein, consumption electronic products are as being mobile phone, tablet computer, notebook electricity
Brain, tabletop display, computer all-in-one machine etc..Household formula electronic product is such as intelligent door lock, TV, refrigerator, Wearable.
Vehicular electronic product is such as automatic navigator, vehicle-carrying DVD.Financial terminal product is as being ATM machine, the end of self-service transacting business
End etc..By taking the mobile terminal of cell phone type as an example, right above-mentioned biological sensing module is equally applicable to other electronic equipment shown in Fig. 8
Suitable electronic product, it is not limited to the mobile terminal of cell phone type.
Specifically, the front of the mobile terminal 3 is equipped with a display panel 100, which is equipped with protection cap
Plate 300.Alternatively, the screen accounting of the display panel 100 is higher, such as more than 80%.Screen accounting refers to the aobvious of display panel 100
Show that region 101 accounts for the ratio of the front surface region of mobile terminal 3.The photosensitive panel 200 is correspondingly arranged at the upper of the display panel 100
Side, and it is arranged at the lower section of cover sheet 300.
In some embodiments, photosensitive panel 200 is used to perform to optional position in the display area of display panel 100
Target object biological information sensing.Specifically, such as incorporated by reference to reference to Fig. 2 and Figure 10, display panel 100 has show
Show region 101 and non-display area 102, the display area 101 by display panel 100 all display pixels 12 light-emitting zone
Define, the region beyond display area 101 is non-display area 102, and non-display area 102 is used to set driving display pixel 12
The circuit such as display driver element or line bonding area for flexible PCB connection is set.Photosensitive panel 200 has a sense
Survey region 203 and non-sensing region 204, the sensing region 203 by photosensitive panel 200 all photosensitive units 22 sensing region
Define, the region beyond sensing region 203 is non-sensing region 204, and non-sensing region 204 is used to set driving photosensitive unit 22
Perform the grade circuit of photosensitive driving unit 32 of light sensing or the line bonding area for flexible PCB connection.Sensing region 203
Shape it is consistent with the shape of display area 101, and the size of sensing region 203 be greater than or equal to display area 101 size,
So that photosensitive panel 200 can be to contact or the target object close to 101 optional position of display area of display panel 100
The sensing of predetermined biological information.Further, the area of photosensitive panel 200 is less than or equal to the area of display panel 100,
And the shape of photosensitive panel 100 is consistent with the shape of display panel 100, so easy to photosensitive panel 200 and display panel 100
Assembling.So, ground is changed, in some embodiments, the area of photosensitive panel 200 can also be more than the face of display panel 100
Product.
When mobile terminal 3 is in bright screen state and is in biological information sensing modes, which sends out
Optical signals.When an object contacts or during close to the viewing area, which, which receives the light reflected by the object, believes
Number, the optical signal received is changed as corresponding electric signal, and the predetermined biological characteristic letter of the object is obtained according to the electric signal
Breath, for example, information in fingerprint.So as to which the photosensitive panel 200 can realize the mesh to contact or close to display area optional position
Mark object is sensed.
In some embodiments, the sensing region 203 of the photosensitive panel 200 is alternatively less than display panel 100
Display area 101, to realize the predetermined biological characteristic of the target object of the regional area of the display area 101 of display panel 100
The sensing of information.
So, ground is changed, in some embodiments, refer to Figure 11 and Figure 12, the biology of embodiment of the present invention
Sensing module is applied to a mobile terminal 3, and the front of the mobile terminal is equipped with a display panel 100, the top of display panel 100
Equipped with cover sheet 300.The screen accounting of the display panel 100 is higher, such as more than 80%.Screen accounting refers to display panel 100
Actual displayed region account for mobile terminal front surface region ratio.The middle bottom in the actual displayed region of the display panel 100
Put place and be equipped with a biological sensing region S touched for target object, to carry out the biological information of target object sensing, such as
Target object is finger, then biological sensing region S is fingerprint recognition region, to carry out fingerprint recognition.Accordingly, display panel
The position of the corresponding fingerprint identification area domain S in 100 lower sections is equipped with a photosensitive panel 200, which is used to place in finger
When the S of fingerprint recognition region, the fingerprint image of the finger is obtained.It is understood that it is arranged at the middle bottom of display panel 100
Put when being for user's hand-held mobile terminal, facilitate the position of finger touch display panel 100.It is of course also possible to the side of being arranged at
Just the other positions that finger touches.
In some embodiments, electronic equipment further comprises a touch sensor (not shown), the touch
Sensor is used for the touch area for when a target object contacts the cover sheet, determining the target object, with driving pair
Answer the display pixel of touch area light and sensor devices perform light sensing.
In some embodiments, the touch sensor either with the cover sheet 300 is integrated or and photosurface
Plate 200 is integrated, or integrated with display panel 100.By integrated touch sensor, not only realize and target object is touched
Detection is touched, and also reduces the thickness of electronic equipment, is conducive to electronic equipment and develops towards lightening direction.
In the description of this specification, reference term " embodiment ", " certain embodiments ", " schematically implementation
The description of mode ", " example ", " specific example " or " some examples " etc. means with reference to the embodiment or example description
Particular features, structures, materials, or characteristics are contained at least one embodiment or example of the present invention.In this specification
In, schematic expression of the above terms is not necessarily referring to identical embodiment or example.Moreover, the specific spy of description
Sign, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, " multiple " are meant that at least two, such as two, three
It is a etc., unless otherwise specifically defined.
Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiment is
Exemplary, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be right
The above embodiment is changed, changes, replacing and modification.
Claims (16)
1. a kind of drive circuit of biological sensing module, the biological sensing module include display panel and with the display panel
The photosensitive panel being stacked；The display panel includes multiple display pixels；The photosensitive panel includes multiple sensor devices；Often
Pixel shown by one sensor devices face one is set；The drive circuit is when drive part display pixel is lighted at the same time, driving
Light sensing is performed with the sensor devices of the display pixel face of extinguishing.
2. drive circuit as claimed in claim 1, it is characterised in that：The sensor devices are used to receive optical signal, and change
The optical signal received is electric signal；The drive circuit further comprises signal processing unit, and the signal processing unit connects
The electric signal from sensor devices output is received, and the object contacted or close to the biological sensing module is obtained according to the electric signal
The predetermined biological information of body.
3. drive circuit as claimed in claim 1, it is characterised in that：The display pixel is in array distribution, and the display
Pixel is corresponded to by odd-numbered line and even number line is divided into the first display pixel groups and the second display pixel groups, when the drive circuit drives
When photosensitive panel performs light sensing, the drive circuit drives the display pixel of same display pixel groups to light at the same time, and driving is not
Display pixel with display pixel groups non-concurrent is lighted.
4. drive circuit as claimed in claim 3, it is characterised in that：When the drive circuit drives first display pixel groups
After reaching preset time with the lighting time of the display pixel of the display pixel groups in the second display pixel groups, then driving is another
The display pixel of one display pixel groups is lighted at the same time.
5. drive circuit as claimed in claim 3, it is characterised in that：The multiple sensor devices are arranged in array, and described
Sensor devices are corresponded to by odd-numbered line and even number line is divided into the first sensor devices group and the second sensor devices group, wherein, described first
Each row sensor devices of sensor devices group and each row display pixel difference face of first display pixel groups are set, and described the
Each row sensor devices of two sensor devices groups and each row display pixel difference face of second display pixel groups are set；It is described
Drive circuit is further used for：When the display pixel of the first display pixel groups is lighted at the same time, the second sensor devices are driven line by line
Sensor devices in group perform light sensing；When the display pixel of the second display pixel groups is lighted at the same time, the first sense is driven line by line
Sensor devices in optical device group perform light sensing.
6. the drive circuit as described in any one in claim 1-5, it is characterised in that：The biological sensing module is further
Including touch sensor, the drive circuit is further used for driving the touch sensor to perform touch-sensing, when detecting
Target object touches or during close to the biological sensing module, determines touch area of the target object on biological sensing module,
Shone with the display pixel of the corresponding touch area of driving and sensor devices perform light sensing.
7. the drive circuit as described in any one in claim 1-5, it is characterised in that：The drive circuit is integrated in one
Or in several chips；Or, the partial circuit in the drive circuit is integrated in a chip or several chips.
8. a kind of biological sensing module, including display panel and the photosensitive panel that is stacked with the display panel；It is described aobvious
Show that panel includes multiple display pixels；The photosensitive panel includes multiple sensor devices；Picture shown by each sensor devices face one
Element is set：The biological sensing module further comprises the drive circuit as described in claim 1-7 any one, the driving
Circuit is used to drive display pixel to light and drive sensor devices to perform light sensing.
9. biological sensing module as claimed in claim 8, it is characterised in that：The display pixel is in array distribution, and described
Display pixel is corresponded to by odd-numbered line and even number line is divided into the first display pixel groups and the second display pixel groups, when the photosensitive panel
When performing light sensing, the drive circuit drives the display pixel of same display pixel groups to light at the same time, drives different display pictures
The display pixel of element group is non-concurrent to be lighted.
10. biological sensing module as claimed in claim 9, it is characterised in that：When the drive circuit drives first display
After the lighting time of the display pixel of a display pixel groups in pixel groups and the second display pixel groups reaches the scheduled time, then
The display pixel of another display pixel groups is driven to light at the same time.
11. biological sensing module as claimed in claim 8, it is characterised in that：The multiple sensor devices are arranged in array, and
Sensor devices are corresponded to by odd-numbered line and even number line is divided into the first sensor devices group and the second sensor devices group, wherein, described first
Each row sensor devices of sensor devices group and each row display pixel difference face of first display pixel groups are set, and described the
Each row sensor devices of two sensor devices groups and each row display pixel difference face of second display pixel groups are set；
When the display pixel of one display pixel groups is lighted at the same time, which drives the sensor devices in the second sensor devices group line by line
Perform light sensing；When the display pixel of the second display pixel groups is lighted at the same time, which drives the first photoreceptor line by line
Sensor devices in part group perform light sensing.
12. the biological sensing module as described in claim 8-11 any one, it is characterised in that：The photosensitive panel is located at institute
The top of display panel is stated, or the photosensitive panel is located at the lower section of the display panel.
13. biological sensing module as claimed in claim 12, it is characterised in that：The display panel has display area；Institute
State photosensitive panel be used for perform in the display area of display panel the target object of optional position biological information sensing；
Alternatively, the photosensitive panel has sensing region, and the shape of the sensing region is consistent with the shape of the display area, institute
The size for stating sensing region is greater than or equal to the size of the display area.
14. the biological sensing module as described in claim 8-11 any one, it is characterised in that：The display panel has one
Biological sensing region, the photosensitive panel are corresponded to positioned at the lower section in biological sensing region.
15. the biological sensing module as described in claim 8-11 any one, it is characterised in that：The biological sensing module into
One step includes the touch sensor being connected with the drive circuit.
16. a kind of electronic equipment, it is characterised in that：Including the biological sensing module as described in claim 8-15 any one.
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| CN201710708266.5A CN107958650B (en) | 2017-08-17 | 2017-08-17 | Biological sensing module, driving circuit thereof and electronic equipment |
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| CN201710708266.5A CN107958650B (en) | 2017-08-17 | 2017-08-17 | Biological sensing module, driving circuit thereof and electronic equipment |
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