CN106249973B - A kind of In-cell touch panel, its driving method and display device - Google Patents
A kind of In-cell touch panel, its driving method and display device Download PDFInfo
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- CN106249973B CN106249973B CN201610578703.1A CN201610578703A CN106249973B CN 106249973 B CN106249973 B CN 106249973B CN 201610578703 A CN201610578703 A CN 201610578703A CN 106249973 B CN106249973 B CN 106249973B
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- 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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
Abstract
The invention discloses a kind of In-cell touch panel, its driving method and display devices, and when being touched by finger, each first fingerprint detection electrode in the touch control detection stage, fingerprint detection region forms the detection that self-capacitance realizes position of touch；In the fingerprint detection stage, each first fingerprint detection electrode and each second fingerprint detection electrode in fingerprint detection region can form mutual capacitance, since influence of the valley and a ridge to the capacitance of the mutual capacitance of formation of finger print is different, therefore the information of the valley and a ridge of fingerprint can be detected by detecting the variation of the capacitance between each mutual capacitance, so as to so that In-cell touch panel realizes fingerprint detection function.
Description
Technical field
The present invention relates to field of display technology, in particular to a kind of In-cell touch panel, its driving method and display device.
Background technique
With the high speed development of technology, the mobile product with bio-identification function is progressed into people's lives.By
It is that human body is inherent and unique and can be with other people phase region another characteristics in fingerprint, it is by the system on finger tip skin surface
Column valley and a ridge composition, the composition details of these valley and a ridges generally include the bifurcated of ridge, the end of ridge, arch, the arch of tent-type,
The details such as left-handed, dextrorotation, spiral or bispin, determine the unique trait of fingerprint, therefore have received widespread attention.Currently, people
By based on silicon-based technology push type and slide fingerprint identification technology be integrated into mobile product, following people concern
Core be the employing fingerprint identification technology in the display area of display panel so that display panel have fingerprint identification function.
It therefore, how to be that those skilled in the art are urgently to be resolved in the display area of display panel realization fingerprint identification function
The technical issues of.
Summary of the invention
The embodiment of the present invention provides a kind of In-cell touch panel, its driving method and display device, for making touch screen
Realize fingerprint identification function in display area.
Therefore, the embodiment of the invention provides a kind of In-cell touch panels, comprising: the array substrate and opposite direction being oppositely arranged
Substrate and multiple self-capacitance electrodes between the array substrate and the opposite substrate, the In-cell touch panel
It further include fingerprint detection region, and the self-capacitance electrode being located in the fingerprint detection region is by multiple mutually independent first
Fingerprint detection electrode composition；
The fingerprint detection region further includes multiple mutually only between the array substrate and the opposite substrate
The second vertical fingerprint detection electrode, and each second fingerprint detection electrode intersects with each first fingerprint detection electrode and sets
It sets and mutually insulated；
In the touch control detection stage, each first fingerprint detection electrode forms self-capacitance for detecting position of touch；Referring to
Line detection-phase, each first fingerprint detection electrode and each second fingerprint detection electrode form mutual capacitance and refer to for detecting
Line.
Preferably, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, each first fingerprint detection electrode
Between each second fingerprint detection electrode and the array substrate；Alternatively,
Each second fingerprint detection electrode is between each first fingerprint detection electrode and the array substrate.
Preferably, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, each first fingerprint detection electrode
With each same material of self-capacitance electrode same layer；And/or
The same material of each second fingerprint detection electrode same layer.
Preferably, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, further includes: be located at each described first and refer to
Insulating layer between line detecting electrode and each second fingerprint detection electrode.
Preferably, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, further includes: be located at the array substrate
Black matrix layer between the opposite substrate；
The black matrix layer covers each first fingerprint detection electrode in the battle array in the orthographic projection of the array substrate
The orthographic projection of column substrate；And/or
The black matrix layer covers each second fingerprint detection electrode in the battle array in the orthographic projection of the array substrate
The orthographic projection of column substrate.
Preferably, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, further includes: with each self-capacitance electricity
The driving chip that pole, each first fingerprint detection electrode and each second fingerprint detection electrode are electrically connected；
The driving chip is used for, in the touch control detection stage, to each first fingerprint detection electrode and each described
Self-capacitance electrode applies touch drive signal, and the variation and detection of the capacitance by detecting each self-capacitance electrode are each
The variation of the sum of the capacitance of the first fingerprint detection electrode is to judge position of touch；
In the fingerprint detection stage, fingerprint driving signal successively is loaded to each first fingerprint detection electrode, and lead to
It crosses and detects capacitance variation between each first fingerprint detection electrode and each second fingerprint detection electrode to judge to refer to
The information of the valley and a ridge of line；Alternatively, successively loading fingerprint driving signal to each second fingerprint detection electrode, and pass through detection
Capacitance variation between each first fingerprint detection electrode and each second fingerprint detection electrode is to judge the paddy of fingerprint
With the information of ridge.
Preferably, the driving chip is also used in above-mentioned In-cell touch panel provided in an embodiment of the present invention, in institute
The touch control detection stage is stated, electric signal identical with the touch drive signal is loaded to each second fingerprint detection electrode.
Preferably, the driving chip is located in described in above-mentioned In-cell touch panel provided in an embodiment of the present invention
A side edge of the embedded touch screen around the neighboring area of display area；
The fingerprint detection region is located at the side edge with the driving chip apart from nearest display area.
Preferably, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, when to each first fingerprint detection
When electrode loads fingerprint driving signal, each first fingerprint detection electrode edge is parallel to the peripheral region with the driving chip
The direction of the side in domain extends, and each second fingerprint detection electrode is along perpendicular to the neighboring area with the driving chip
Side direction extend；Alternatively,
When to each second fingerprint detection electrode load fingerprint driving signal, each first fingerprint detection electrode edge
Extend perpendicular to the direction of the side of the neighboring area with the driving chip, each second fingerprint detection electrode is along parallel
Extend in the direction of the side of the neighboring area with the driving chip.
Correspondingly, the embodiment of the invention also provides a kind of display devices, including above-mentioned provided in an embodiment of the present invention
A kind of In-cell touch panel.
Correspondingly, the embodiment of the invention also provides a kind of any of the above-described kind of embedded touches provided in an embodiment of the present invention
The driving method of screen, comprising: touch control detection stage and fingerprint detection stage；Wherein,
In the touch control detection stage, touch-control is loaded to each first fingerprint detection electrode and each self-capacitance electrode
Detect signal, and each first fingerprint detection electricity of variation and detection of the capacitance by detecting each self-capacitance electrode
The variation of the sum of the capacitance of pole is to judge position of touch；
In the fingerprint detection stage, fingerprint driving signal successively is loaded to each first fingerprint detection electrode, and lead to
The variation for detecting the capacitance between each first fingerprint detection electrode and each second fingerprint detection electrode is crossed to judge
The information of the valley and a ridge of the fingerprint；Alternatively, successively loading fingerprint driving signal to each second fingerprint detection electrode, and lead to
The variation for detecting the capacitance between each first fingerprint detection electrode and each second fingerprint detection electrode is crossed to judge
The information of the valley and a ridge of the fingerprint.
Preferably, in above-mentioned driving method provided in an embodiment of the present invention, further includes: in the touch control detection stage,
Electric signal identical with the touch drive signal is loaded to each second fingerprint detection electrode.
In-cell touch panel, its driving method and display device provided in an embodiment of the present invention, when being touched by finger,
Touch control detection stage, each first fingerprint detection electrode in fingerprint detection region form the detection that self-capacitance realizes position of touch；
Each first fingerprint detection electrode and each second fingerprint detection electrode in the fingerprint detection stage, fingerprint detection region can be formed
Mutual capacitance can pass through detection since influence of the valley and a ridge to the capacitance of the mutual capacitance of formation of finger print is different
The variation of capacitance between each mutual capacitance detects the information of the valley and a ridge of fingerprint, so as to so that In-cell touch panel is realized
Fingerprint detection function.
Detailed description of the invention
Fig. 1 is the schematic top plan view of In-cell touch panel provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of the section structure of the In-cell touch panel provided in an embodiment of the present invention along the direction A-A '；
Fig. 3 is the concrete structure schematic diagram of the fingerprint detection unit of driving chip provided in an embodiment of the present invention；
Fig. 4 is the flow chart of driving method provided in an embodiment of the present invention.
Specific embodiment
In order to make the purpose of the present invention, the technical scheme and advantages are more clear, with reference to the accompanying drawing, to the embodiment of the present invention
The specific embodiment of the In-cell touch panel of offer, its driving method and display device is described in detail.
Each layer film thickness, shape, relative size, number do not reflect the actual proportions of In-cell touch panel in attached drawing,
Purpose is schematically illustrate the content of present invention.
A kind of In-cell touch panel provided in an embodiment of the present invention, as shown in Figure 1, comprising: the array substrate being oppositely arranged
Multiple self-capacitance electrodes 300 with opposite substrate and between array substrate and opposite substrate, In-cell touch panel is also wrapped
Fingerprint detection region 400 is included, and the self-capacitance electrode being located in fingerprint detection region 400 is referred to by multiple mutually independent first
Line detecting electrode 410 forms；
Fingerprint detection region 400 further includes multiple mutually independent second fingers between array substrate and opposite substrate
Line detecting electrode 420, and each second fingerprint detection electrode 420 and each first fingerprint detection electrode 410 are arranged in a crossed manner and mutual
Insulation；
In the touch control detection stage, each first fingerprint detection electrode 410 forms self-capacitance for detecting position of touch；In fingerprint
Detection-phase, each first fingerprint detection electrode 410 and each second fingerprint detection electrode 420 form mutual capacitance for detecting fingerprint.
Above-mentioned In-cell touch panel provided in an embodiment of the present invention, when being touched by finger, in the touch control detection stage, fingerprint
Each first fingerprint detection electrode in detection zone forms the detection that self-capacitance realizes position of touch；In the fingerprint detection stage, refer to
Each first fingerprint detection electrode and each second fingerprint detection electrode in line detection zone can form mutual capacitance, due to Fingers
Influence of the valley and a ridge of line to the capacitance of the mutual capacitance of formation is different, therefore can be by detecting the capacitor between each mutual capacitance
Value changes to detect the information of the valley and a ridge of fingerprint, so as to so that In-cell touch panel realizes fingerprint detection function.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, due in touch control detection rank
Section, self-capacitance electrode are made of multiple mutually independent first fingerprint detection electrodes, provided in an embodiment of the present invention above-mentioned interior
In embedded touch screen, in order to reduce interfering with each other for touch control detection stage and fingerprint detection stage, need using touch control detection rank
Section and the mode of fingerprint detection stage timesharing driving are driven.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, each first fingerprint detection electricity
Extremely driving electrodes, each second fingerprint detection electrode are detection electrode；Alternatively, each second fingerprint detection electrode is driving electrodes,
Each first fingerprint detection electrode is detection electrode.Wherein, driving electrodes load fingerprint driving signal, and detection electrode exports fingerprint and visits
Survey signal.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, as shown in Fig. 2, each second
Fingerprint detection electrode 420 is between each first fingerprint detection electrode 410 and array substrate 100.It is shown in this way when finger touches
When screen, in the touch control detection stage, the first fingerprint detection electricity of self-capacitance can be formed to avoid each 420 pairs of second fingerprint detection electrode
The shielding action of pole 410, so that the signal that each first fingerprint detection electrode 410 generates is larger.
Alternatively, in the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, each first fingerprint inspection
Electrode is surveyed between each second fingerprint detection electrode and array substrate.In this way when finger touch display screen, in touch control detection
Stage, the shielding that may generate the first fingerprint detection electrode 410 of each 420 pairs of second fingerprint detection electrode formation self-capacitance are made
With so that the signal that the first fingerprint detection electrode 410 generates is smaller.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, as shown in Fig. 2, each first
Fingerprint detection electrode 410 and the same material of each 300 same layer of self-capacitance electrode.It does not need to increase in this way and additional prepares each first fingerprint
The process of detecting electrode 410, it is only necessary to each self-capacitance electrode 300 can be formed by a patterning processes and each first fingerprint is examined
The figure for surveying electrode 410 can simplify preparation process, save production cost, improve production efficiency.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, as shown in Fig. 2, each second
The same material of 420 same layer of fingerprint detection electrode.Only need to be formed each second fingerprint detection electricity in this way by a patterning processes
The figure of pole 420 can simplify preparation process, save production cost, improve production efficiency.
Preferably, in the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, as shown in Fig. 2,
Each first fingerprint detection electrode 410 and the same material of each 300 same layer of self-capacitance electrode, and each second fingerprint detection electrode, 420 same layer
Same material.It only needs that each self-capacitance electrode 300 and each first fingerprint detection electrode can be formed by a patterning processes in this way
410 figure, and only need to be formed the figure of each second fingerprint detection electrode 420 by a patterning processes, it can
Simplify preparation process, save production cost, improves production efficiency.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, as shown in Figure 2, further includes:
Insulating layer 500 between each first fingerprint detection electrode 410 and each second fingerprint detection electrode 420.
In the specific implementation, it is penetrated to make each first fingerprint detection electrode not influence In-cell touch panel in the display time
The homogeneity of rate, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, further includes: be located at array substrate and opposite base
Black matrix layer between plate；
Black matrix layer covers each first fingerprint detection electrode in the orthographic projection of array substrate in the orthographic projection of array substrate.
In the specific implementation, it is penetrated to make each second fingerprint detection electrode not influence In-cell touch panel in the display time
The homogeneity of rate, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, further includes: be located at array substrate and opposite base
Black matrix layer between plate；
Black matrix layer covers each second fingerprint detection electrode in the orthographic projection of array substrate in the orthographic projection of array substrate.
Preferably, in order to not influence the homogeneity of In-cell touch panel light transmission rate in display further, specific real
Shi Shi, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, further includes: between array substrate and opposite substrate
Black matrix layer；
Black matrix layer covers each first fingerprint detection electrode in the orthographic projection of array substrate in the orthographic projection of array substrate, and
Black matrix layer covers each second fingerprint detection electrode in the orthographic projection of array substrate in the orthographic projection of array substrate.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, as shown in Figure 2, further includes:
Multiple pixel units 600 between array substrate 100 and opposite substrate 200.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, as shown in Figure 1, further includes:
The drive being electrically connected with each self-capacitance electrode 300, each first fingerprint detection electrode 410 and each second fingerprint detection electrode 420
Dynamic chip 700；
Driving chip 700 is used for, in the touch control detection stage, to each first fingerprint detection electrode 410 and each self-capacitance electrode
300 apply touch drive signal, and variation and each first fingerprint of detection of the capacitance by detecting each self-capacitance electrode 300
The variation of the sum of the capacitance of detecting electrode is to judge position of touch；
In the fingerprint detection stage, fingerprint driving signal successively is loaded to each first fingerprint detection electrode 410, and pass through detection
Capacitance variation between each first fingerprint detection electrode 410 and each second fingerprint detection electrode 420 with judge fingerprint paddy and
The information of ridge；Alternatively, successively loading fingerprint driving signal to each second fingerprint detection electrode 420, and referred to by detecting each first
Capacitance variation between line detecting electrode 410 and each second fingerprint detection electrode 420 is to judge the information of the valley and a ridge of fingerprint.
It should be noted that in above-mentioned In-cell touch panel provided in an embodiment of the present invention, since each first fingerprint is examined
It surveys electrode and is less than self-capacitance electrode area defined in the orthographic projection of underlay substrate in the orthographic projection of underlay substrate, so that from electricity
The capacitance for holding electrode is greater than the capacitance of each first fingerprint detection electrode, therefore by by the electricity of each first fingerprint detection electrode
Capacitance is added, capacitance and self-capacitance electricity when each first fingerprint detection electrode in fingerprint detection region can be made to form self-capacitance
The capacitance of pole is approximate.When finger touches embedded display screen, in the touch control detection stage, each first fingerprint detection electrode and each
Self-capacitance electrode loads touch drive signal, so as to pass through the capacitance variation and detection that detect each self-capacitance electrode
The variation of the sum of the capacitance of each first fingerprint detection electrode is to judge position of touch.
It include X the second fingerprint detection electrodes and Y the first fingerprint detections with fingerprint detection region in the fingerprint detection stage
Electrode, and driving chip successively to Y the second fingerprint detection electrodes load fingerprint driving signals for, refer to when to Y first
When a second fingerprint detection electrode in line detecting electrode loads fingerprint driving signal, each first fingerprint detection electricity is read respectively
Fingerprint detection signal on extremely, therefore after successively loading fingerprint driving signal to each second fingerprint detection electrode, X can be read
× Y fingerprint detection signal, so as to these fingerprint detection signals according to reading determine each first fingerprint detection electrode with
The position of the intersection point of each second fingerprint detection electrode so as to specifically determine the position of multiple spot, therefore may be implemented simultaneously
Detection to multiple valley and a ridges of fingerprint.When finger touch embedded display screen when, be equivalent to each first fingerprint detection electrode and
Capacitance between each second fingerprint detection electrode changes.Since ridge distance the first fingerprint detection electrode of fingerprint is closer, so that
Ridge is larger to the change of mutual capacitance, and the first fingerprint detection of paddy distance electrode of fingerprint is farther out, smaller to the change of mutual capacitance, because
This, can be micro- caused by the capacitance variation between each first fingerprint detection electrode and each second fingerprint detection electrode by detecting
Weak current is to judge the information of the valley and a ridge of fingerprint, so that In-cell touch panel be made to realize fingerprint detection function.
In the specific implementation, in the touch control detection stage, in order to avoid the second fingerprint detection electrode and the first fingerprint detection electricity
Coupled capacitor is generated between pole to influence the accuracy of touch control detection, in above-mentioned embedded touch provided in an embodiment of the present invention
In screen, driving chip is also used to, and in the touch control detection stage, is loaded to each second fingerprint detection electrode identical as touch drive signal
Electric signal.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, driving chip includes: signal
Input unit, touch control detection unit, fingerprint detection unit；Wherein,
Signal input unit, for being applied to each first fingerprint detection electrode and each self-capacitance electrode in the touch control detection stage
Add touch drive signal；In the fingerprint detection stage, fingerprint driving signal successively is loaded to each first fingerprint detection electrode, alternatively,
In the fingerprint detection stage, fingerprint driving signal successively is loaded to each second fingerprint detection electrode；
Touch control detection unit, in the touch control detection stage, by detect each self-capacitance electrode capacitance variation with
And the variation of the sum of capacitance of each fingerprint detection electrode of detection is to judge position of touch；
Fingerprint detection unit, is used for, and in the fingerprint detection stage, is examined by the first fingerprint detection electrode of detection and the second fingerprint
The variation for the capacitance surveyed between electrode is to judge the information of the valley and a ridge of fingerprint.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, when driving chip is in fingerprint
When detection-phase successively loads fingerprint driving signal to each second fingerprint detection electrode, as shown in figure 3, fingerprint detection unit packet
It includes: amplifier P, capacitor C and switching device K；Wherein,
The inverting input terminal p1 of the amplifier P first end and switch with the first fingerprint detection electrode 410, capacitor C respectively
The first end of device K is connected, and the non-inverting input terminal p2 of amplifier P is connected with ground terminal VSS, and the output end p 3 of amplifier P is distinguished
It is connected with the second end of capacitor C, the second end of switching device K and voltage output end Output.
Alternatively, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, when driving chip is in the fingerprint detection stage
When successively loading fingerprint driving signal to each first fingerprint detection electrode, fingerprint detection unit includes: amplifier, capacitor and switch
Device；Wherein,
The inverting input terminal of amplifier respectively with the second fingerprint detection electrode, the first end of capacitor and switching device
One end be connected, the non-inverting input terminal of amplifier is connected with ground terminal, the output end of amplifier respectively with the second end of capacitor, switch
The second end and voltage output end of device are connected.
In the specific implementation, in order to reduce the signal delay and each second fingerprint detection of each first fingerprint detection electrode 410
The delay of the signal of electrode 420, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, as shown in Figure 1, driving chip
700 are located at In-cell touch panel around a side edge of the neighboring area of display area；
Fingerprint detection region 400 is located at the side edge with driving chip 700 apart from nearest display area.
Further, in the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, such as Fig. 1 institute
Show, when to each second fingerprint detection electrode 420 load fingerprint driving signal when, each first fingerprint detection electrode 410 along perpendicular to
The direction of the side of neighboring area with driving chip 700 extends, and each second fingerprint detection electrode 420 drives along being parallel to have
The direction of the side of the neighboring area of dynamic chip 700 extends.It can be further decreased in this way for exporting fingerprint detection signal
The signal delay of first fingerprint detection electrode improves driving frequency, avoids influence of noise, improve the precision of fingerprint detection.
Alternatively, in the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, referring to when to each first
When line detecting electrode loads fingerprint driving signal, each first fingerprint detection electrode edge is parallel to the neighboring area with driving chip
Side direction extend, and each second fingerprint detection electrode along perpendicular to the neighboring area with driving chip side side
To extension.The signal delay that the second fingerprint detection electrode for exporting fingerprint detection signal can be further decreased in this way, mentions
High driving frequency, avoids influence of noise, improves the detection accuracy of fingerprint.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, array substrate can be glass
Glass substrate；Alternatively, array substrate may be flexible base board.It is not limited thereto.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, opposite substrate can be glass
Glass substrate；Alternatively, opposite substrate may be flexible base board, it is not limited thereto.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, the material of flexible base board is
Polyimides.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, the figure of each self-capacitance electrode
Shape can be located at fenestral fabric of the black matrix in the orthographic projection region of underlay substrate for the orthographic projection in underlay substrate.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, further includes: examined with fingerprint is removed
Survey the one-to-one conducting wire of each self-capacitance electrode in the region except region；Wherein,
Each self-capacitance electrode in region in addition to fingerprint detection region is electrical by corresponding conducting wire and driving chip
Connection.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, each pixel unit includes extremely
A few organic electroluminescence structure；
When each first fingerprint detection electrode is between each second fingerprint detection electrode and array substrate, embedded touch
Screen further include: the first encapsulated layer between organic electroluminescence structure and each first fingerprint detection electrode.
Alternatively, in the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, as shown in Fig. 2, respectively
Pixel unit 600 includes at least one organic electroluminescence structure；
When each second fingerprint detection electrode 420 is between each first fingerprint detection electrode 410 and array substrate 100,
In-cell touch panel further include: the second encapsulation between organic electroluminescence structure and each second fingerprint detection electrode 420
Layer 800.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, array substrate and opposite base
Plate is flexible base board,
When each first fingerprint detection electrode is between each second fingerprint detection electrode and array substrate, each self-capacitance electricity
Pole, each first fingerprint detection electrode and each second fingerprint detection electrode are to make shape in the first encapsulated layer using printing technology
At；Alternatively,
When each second fingerprint detection electrode is between each first fingerprint detection electrode and array substrate, when each self-capacitance electricity
Pole, each first fingerprint detection electrode and each second fingerprint detection electrode are to make shape in the second encapsulated layer using printing technology
At.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, the first encapsulation is layer by layer with the
Two encapsulated layers respectively include the first silicon nitride layer being stacked, fire sand layer and the second silicon nitride layer.
In the specific implementation, in above-mentioned In-cell touch panel provided in an embodiment of the present invention, the film of the first silicon nitride layer
Thickness is 0.6 μm, and the film thickness of fire sand layer is 0.5 μm, and the film thickness of the second silicon nitride layer is 0.6 μm.
It in the specific implementation, further include being located at adjacent two in above-mentioned In-cell touch panel provided in an embodiment of the present invention
Pixel defining layer between a organic electroluminescence structure.
It in the specific implementation, can also be by the display chip of display and above-mentioned driving chip provided in an embodiment of the present invention
It is integrated into a chip, above-mentioned In-cell touch panel provided in an embodiment of the present invention can in this way further decreased and is produced into
This.
Based on the same inventive concept, the embodiment of the invention also provides a kind of any of the above-described kind provided in an embodiment of the present invention
The driving method of In-cell touch panel, as shown in Figure 4, comprising: touch control detection stage and fingerprint detection stage；Wherein,
S401, in the touch control detection stage, to each first fingerprint detection electrode and each self-capacitance electrode load touch control detection letter
Number, and the variation of the capacitance by detecting each self-capacitance electrode and the sum of the capacitance of each first fingerprint detection electrode of detection
Variation to judge position of touch；
S402, in the fingerprint detection stage, fingerprint driving signal successively is loaded to each first fingerprint detection electrode, and passes through inspection
The variation for the capacitance surveyed between each first fingerprint detection electrode and each second fingerprint detection electrode is to judge the valley and a ridge of fingerprint
Information；Alternatively, successively loading fingerprint driving signal to each second fingerprint detection electrode, and by detecting each first fingerprint detection
The variation of capacitance between electrode and each second fingerprint detection electrode is to judge the information of the valley and a ridge of fingerprint.
Further, in the specific implementation, in above-mentioned driving method provided in an embodiment of the present invention, further includes: touching
Detection-phase is controlled, electric signal identical with touch drive signal is loaded to each second fingerprint detection electrode.
Based on the same inventive concept, the embodiment of the invention also provides a kind of display devices, including the embodiment of the present invention to mention
The above-mentioned In-cell touch panel supplied.The principle that the display device solves the problems, such as is similar to aforementioned In-cell touch panel, therefore this is aobvious
The implementation of showing device may refer to the implementation of aforementioned In-cell touch panel, and repeating place, details are not described herein.
In the specific implementation, in above-mentioned display device provided in an embodiment of the present invention, display device can be with are as follows: mobile phone,
Any product having a display function such as tablet computer, television set, display, laptop, Digital Frame, navigator or portion
Part.Other essential component parts for the display device are it will be apparent to an ordinarily skilled person in the art that having
, this will not be repeated here, also should not be taken as limiting the invention.The implementation of the display device may refer to above-mentioned encapsulating structure
Embodiment, overlaps will not be repeated.
In-cell touch panel, its driving method and display device provided in an embodiment of the present invention, when being touched by finger,
Touch control detection stage, each first fingerprint detection electrode in fingerprint detection region form the detection that self-capacitance realizes position of touch；
Each first fingerprint detection electrode and each second fingerprint detection electrode in the fingerprint detection stage, fingerprint detection region can be formed
Mutual capacitance can pass through detection since influence of the valley and a ridge to the capacitance of the mutual capacitance of formation of finger print is different
The variation of capacitance between each mutual capacitance detects the information of the valley and a ridge of fingerprint, so as to so that In-cell touch panel is realized
Fingerprint detection function.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (12)
1. a kind of In-cell touch panel, comprising: the array substrate being oppositely arranged is with opposite substrate and positioned at the array substrate
Multiple self-capacitance electrodes between the opposite substrate, which is characterized in that the In-cell touch panel further includes fingerprint detection
Region, and the self-capacitance electrode being located in the fingerprint detection region is by multiple mutually independent first fingerprint detection electrode groups
At；
The fingerprint detection region further includes multiple mutually independent between the array substrate and the opposite substrate
Second fingerprint detection electrode, and each second fingerprint detection electrode and each first fingerprint detection electrode it is arranged in a crossed manner and
Mutually insulated；
In the touch control detection stage, each first fingerprint detection electrode forms self-capacitance for detecting position of touch；It is examined in fingerprint
Survey stage, each first fingerprint detection electrode and each second fingerprint detection electrode form mutual capacitance for detecting fingerprint.
2. In-cell touch panel as described in claim 1, which is characterized in that each first fingerprint detection electrode is located at each institute
It states between the second fingerprint detection electrode and the array substrate；Alternatively,
Each second fingerprint detection electrode is between each first fingerprint detection electrode and the array substrate.
3. In-cell touch panel as described in claim 1, which is characterized in that each first fingerprint detection electrode with it is each described
The same material of self-capacitance electrode same layer；And/or
The same material of each second fingerprint detection electrode same layer.
4. In-cell touch panel as described in claim 1, which is characterized in that further include: it is located at each first fingerprint detection
Insulating layer between electrode and each second fingerprint detection electrode.
5. In-cell touch panel according to any one of claims 1-4, which is characterized in that further include: it is located at the array base
Black matrix layer between plate and the opposite substrate；
The black matrix layer covers each first fingerprint detection electrode in the array base in the orthographic projection of the array substrate
The orthographic projection of plate；And/or
The black matrix layer covers each second fingerprint detection electrode in the array base in the orthographic projection of the array substrate
The orthographic projection of plate.
6. In-cell touch panel according to any one of claims 1-4, which is characterized in that further include: with each self-capacitance
The driving chip that electrode, each first fingerprint detection electrode and each second fingerprint detection electrode are electrically connected；
The driving chip is used for, in the touch control detection stage, to each first fingerprint detection electrode and each electricity certainly
Hold electrode and apply touch drive signal, and the variation and detection of the capacitance by detecting each self-capacitance electrode are each described
The variation of the sum of the capacitance of first fingerprint detection electrode is to judge position of touch；
In the fingerprint detection stage, fingerprint driving signal successively is loaded to each first fingerprint detection electrode, and pass through inspection
The capacitance variation between each first fingerprint detection electrode and each second fingerprint detection electrode is surveyed to judge fingerprint
The information of valley and a ridge；Alternatively, successively loading fingerprint driving signal to each second fingerprint detection electrode, and by detecting each institute
The capacitance variation between the first fingerprint detection electrode and each second fingerprint detection electrode is stated to judge the valley and a ridge of fingerprint
Information.
7. In-cell touch panel as claimed in claim 6, which is characterized in that the driving chip is also used to, in the touch-control
Detection-phase loads electric signal identical with the touch drive signal to each second fingerprint detection electrode.
8. In-cell touch panel as claimed in claim 7, which is characterized in that the driving chip is located at the embedded touch
A side edge of the screen around the neighboring area of display area；
The fingerprint detection region is located at the side edge with the driving chip apart from nearest display area.
9. In-cell touch panel as claimed in claim 6, which is characterized in that loaded when to each first fingerprint detection electrode
When fingerprint driving signal, each first fingerprint detection electrode is along the side for being parallel to the neighboring area with the driving chip
Direction extend, and each second fingerprint detection electrode is along the side perpendicular to the neighboring area with the driving chip
Direction extends；Alternatively,
When to each second fingerprint detection electrode load fingerprint driving signal, each first fingerprint detection electrode is along vertical
Extend in the direction of the side of the neighboring area with the driving chip, each second fingerprint detection electrode edge is parallel to tool
There is the direction of the side of the neighboring area of the driving chip to extend.
10. a kind of display device, which is characterized in that including such as described in any item In-cell touch panels of claim 1-9.
11. a kind of driving method of In-cell touch panel as claim in any one of claims 6-9 characterized by comprising touching
Control detection-phase and fingerprint detection stage；Wherein,
In the touch control detection stage, touch control detection is loaded to each first fingerprint detection electrode and each self-capacitance electrode
Signal, and by the variation of the capacitance of each self-capacitance electrode of detection and detect each first fingerprint detection electrode
The variation of the sum of capacitance is to judge position of touch；
In the fingerprint detection stage, fingerprint driving signal successively is loaded to each first fingerprint detection electrode, and pass through inspection
The variation for the capacitance surveyed between each first fingerprint detection electrode and each second fingerprint detection electrode is described to judge
The information of the valley and a ridge of fingerprint；Alternatively, successively loading fingerprint driving signal to each second fingerprint detection electrode, and pass through inspection
The variation for the capacitance surveyed between each first fingerprint detection electrode and each second fingerprint detection electrode is described to judge
The information of the valley and a ridge of fingerprint.
12. driving method as claimed in claim 11, which is characterized in that further include: in the touch control detection stage, to each institute
It states the second fingerprint detection electrode and loads electric signal identical with the touch drive signal.
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| CN106886749A (en) * | 2016-12-29 | 2017-06-23 | 深圳天珑无线科技有限公司 | Touch-control and fingerprint recognition module and preparation method thereof, electric terminal |
| WO2018126368A1 (en) * | 2017-01-05 | 2018-07-12 | 深圳市汇顶科技股份有限公司 | Touch control device and method for determining capacitive sensing amount of touch control device |
| WO2018145255A1 (en) * | 2017-02-08 | 2018-08-16 | 深圳市飞仙智能科技有限公司 | Smart terminal, capacitive fingerprint sensor, and sensing module thereof |
| CN108664856A (en) * | 2017-03-31 | 2018-10-16 | 奇景光电股份有限公司 | Fingerprint sensing circuit, the processing method of fingerprint image and electronic device |
| US10739900B2 (en) | 2017-06-29 | 2020-08-11 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Touch display panel having fingerprint recognition device integrated therewith and touch display device including same |
| CN107346195B (en) * | 2017-06-29 | 2020-05-05 | 武汉华星光电技术有限公司 | Touch display panel and touch display device |
| CN109283231B (en) * | 2017-07-20 | 2020-05-01 | 京东方科技集团股份有限公司 | Medical detection substrate, medical detection chip and medical detection system |
| KR101938879B1 (en) * | 2017-10-27 | 2019-01-15 | 엘지디스플레이 주식회사 | Display Apparatus |
| CN109871148A (en) * | 2019-02-27 | 2019-06-11 | 武汉华星光电半导体显示技术有限公司 | Touch panel |
| CN110427125A (en) * | 2019-07-19 | 2019-11-08 | 武汉华星光电半导体显示技术有限公司 | Touch control display apparatus |
| CN110688034A (en) * | 2019-10-10 | 2020-01-14 | 业成科技（成都）有限公司 | Touch structure, touch device and driving method of touch structure |
| CN114063834B (en) * | 2021-11-05 | 2023-06-27 | 武汉华星光电半导体显示技术有限公司 | Touch display panel and touch driving method thereof |
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