CN106249973A - 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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- CN106249973A CN106249973A CN201610578703.1A CN201610578703A CN106249973A CN 106249973 A CN106249973 A CN 106249973A CN 201610578703 A CN201610578703 A CN 201610578703A CN 106249973 A CN106249973 A CN 106249973A
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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
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Abstract
The invention discloses a kind of In-cell touch panel, its driving method and display device, when being touched by finger, each first fingerprint detection electrode in touch control detection stage, fingerprint detection region forms self-capacitance and realizes the detection of 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, owing to the valley and a ridge of finger print is different on the impact of the capacitance of the mutual capacitance of formation, therefore can be by detecting the information that the change of the capacitance between each mutual capacitance detects the valley and a ridge of fingerprint, such that it is able to make In-cell touch panel realize fingerprint detection function.
Description
Technical field
The present invention relates to Display Technique field, particularly to a kind of In-cell touch panel, its driving method and display device.
Background technology
Along with the high speed development of technology, have in the life that the mobile product of bio-identification function progresses into people.By
Being that human body is inherent and unique and can be with other people phase region another characteristic in fingerprint, it by finger tip skin surface is
Row valley and a ridge form, 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, have therefore suffered from paying close attention to widely.At present, people
Pressing type based on silica-based technique and slide fingerprint identification Technology Integration are entered in mobile product, following people pay close attention to
Core be in the viewing area of display floater application fingerprint identification technology so that display floater has fingerprint identification function.
Therefore, how realizing fingerprint identification function in the viewing area of display floater is that those skilled in the art are urgently to be resolved hurrily
Technical problem.
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
Viewing area realizes fingerprint identification function.
Therefore, embodiments provide a kind of In-cell touch panel, including: the array base palte being oppositely arranged with to
Substrate and the multiple self-capacitance electrodes between described array base palte and described opposite substrate, described In-cell touch panel
Also include fingerprint detection region, and the self-capacitance electrode being positioned in described fingerprint detection region is by multiple separate first
Fingerprint detection electrode forms；
Described fingerprint detection region also include between described array base palte and described opposite substrate multiple mutually solely
The second vertical fingerprint detection electrode, and each described second fingerprint detection electrode sets with each described first fingerprint detection electrode crossing
Put and mutually insulated；
In the touch control detection stage, each described first fingerprint detection electrode forms self-capacitance and is used for detecting position of touch；Referring to
Stricture of vagina detection-phase, each described first fingerprint detection electrode and each described second fingerprint detection electrode form mutual capacitance and refer to for detection
Stricture of vagina.
It is preferred that in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, each described first fingerprint detection electrode
Between each described second fingerprint detection electrode and described array base palte；Or,
Each described second fingerprint detection electrode is between each described first fingerprint detection electrode and described array base palte.
It is preferred that in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, each described first fingerprint detection electrode
With each described self-capacitance electrode with the same material of layer；And/or,
Each described second fingerprint detection electrode is with the same material of layer.
It is preferred that in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, also include: be positioned at each described first and refer to
Insulating barrier between stricture of vagina detecting electrode and each described second fingerprint detection electrode.
It is preferred that in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, also include: be positioned at described array base palte
And the black matrix layer between described opposite substrate；
Described black matrix layer covers each described first fingerprint detection electrode in described battle array in the orthographic projection of described array base palte
The orthographic projection of row substrate；And/or,
Described black matrix layer covers each described second fingerprint detection electrode in described battle array in the orthographic projection of described array base palte
The orthographic projection of row substrate.
It is preferred that in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, also include: with each described self-capacitance electricity
The driving chip that pole, each described first fingerprint detection electrode and each described second fingerprint detection electrode are electrically connected with；
Described driving chip is used for, in the described touch control detection stage, to each described first fingerprint detection electrode and each described
Self-capacitance electrode applies touch-control and drives signal, and by detecting the change of the capacitance of each described self-capacitance electrode and detecting each
The change of the capacitance sum of described first fingerprint detection electrode is to judge position of touch；
In the described fingerprint detection stage, successively each described first fingerprint detection electrode is loaded fingerprint and drive signal, and lead to
Cross the capacitance variation detected between each described first fingerprint detection electrode and each described second fingerprint detection electrode to judge to refer to
The information of the valley and a ridge of stricture of vagina；Or, successively each described second fingerprint detection electrode is loaded fingerprint and drive signal, and by detection
Capacitance variation between each described first fingerprint detection electrode and each described second fingerprint detection electrode is to judge the paddy of fingerprint
Information with ridge.
It is preferred that in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, described driving chip is additionally operable to, in institute
State the touch control detection stage, each described second fingerprint detection electrode is loaded and drives, with described touch-control, the signal of telecommunication that signal is identical.
It is preferred that in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, described driving chip is positioned at described
Embedded touch screen is around a side edge of the neighboring area of viewing area；
Described fingerprint detection region is positioned at the side edge of the viewing area closest with described driving chip.
It is preferred that in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, when to each described first fingerprint detection
When electrode loads fingerprint driving signal, each described first fingerprint detection electrode edge is parallel to the surrounding zone with described driving chip
The direction of the side in territory extends, and each described second fingerprint detection electrode is along being perpendicular to the neighboring area with described driving chip
Side direction extend；Or,
When each described second fingerprint detection electrode being loaded fingerprint and driving signal, each described first fingerprint detection electrode edge
The direction being perpendicular to have the side of the neighboring area of described driving chip extends, and each described second fingerprint detection electrode is along parallel
The direction of the side in the neighboring area with described driving chip extends.
Correspondingly, the embodiment of the present invention additionally provides a kind of display device, above-mentioned provided including the embodiment of the present invention
A kind of In-cell touch panel.
Correspondingly, the embodiment of the present invention additionally provides any of the above-described kind of embedded touch that a kind of embodiment of the present invention provides
The driving method of screen, including: touch control detection stage and fingerprint detection stage；Wherein,
In the described touch control detection stage, each described first fingerprint detection electrode and each described self-capacitance electrode are loaded touch-control
Detection signal, and by detecting the change of the capacitance of each described self-capacitance electrode and detecting each described first fingerprint detection electricity
The change of the capacitance sum of pole is to judge position of touch；
In the described fingerprint detection stage, successively each described first fingerprint detection electrode is loaded fingerprint and drive signal, and lead to
Cross the change of the capacitance detected between each described first fingerprint detection electrode and each described second fingerprint detection electrode to judge
The information of the valley and a ridge of described fingerprint；Or, successively each described second fingerprint detection electrode is loaded fingerprint and drives signal, and lead to
Cross the change of the capacitance detected between each described first fingerprint detection electrode and each described second fingerprint detection electrode to judge
The information of the valley and a ridge of described fingerprint.
It is preferred that in the above-mentioned driving method that the embodiment of the present invention provides, also include: in the described touch control detection stage,
Each described second fingerprint detection electrode is loaded and drives, with described touch-control, the signal of telecommunication that signal is identical.
In-cell touch panel, its driving method and the display device that the embodiment of the present invention provides, when being touched by finger,
In the touch control detection stage, each first fingerprint detection electrode in fingerprint detection region forms self-capacitance and realizes the detection of position of touch；
Each first fingerprint detection electrode and each second fingerprint detection electrode in fingerprint detection stage, fingerprint detection region can be formed
Mutual capacitance, owing to the valley and a ridge of finger print is different on the impact of the capacitance of the mutual capacitance of formation, therefore can be by detection
The change of the capacitance between each mutual capacitance detects the information of the valley and a ridge of fingerprint, such that it is able to make In-cell touch panel realize
Fingerprint detection function.
Accompanying drawing explanation
The schematic top plan view of the In-cell touch panel that Fig. 1 provides for the embodiment of the present invention；
The In-cell touch panel that Fig. 2 provides for the embodiment of the present invention is along the cross-sectional view in A-A ' direction；
The concrete structure schematic diagram of the fingerprint detection unit of the driving chip that Fig. 3 provides for the embodiment of the present invention；
The flow chart of the driving method that Fig. 4 provides for the embodiment of the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage are clearer, below in conjunction with the accompanying drawings, to the embodiment of the present invention
The detailed description of the invention of the In-cell touch panel, its driving method and the display device that provide is described in detail.
Each layer film thickness in accompanying drawing, shape, relative size, number the most do not reflect the actual proportions of In-cell touch panel,
Purpose is schematically illustrate present invention.
A kind of In-cell touch panel that the embodiment of the present invention provides, as it is shown in figure 1, include: the array base palte being oppositely arranged
And opposite substrate and the multiple self-capacitance electrodes 300 between array base palte and opposite substrate, In-cell touch panel is also wrapped
Include fingerprint detection region 400, and the self-capacitance electrode being positioned in fingerprint detection region 400 is by multiple the first separate fingers
Stricture of vagina detecting electrode 410 forms；
Fingerprint detection region 400 also includes the second multiple separate finger between array base palte and opposite substrate
Stricture of vagina detecting electrode 420, and each second fingerprint detection electrode 420 is arranged in a crossed manner and mutual with each first fingerprint detection electrode 410
Insulation；
In the touch control detection stage, each first fingerprint detection electrode 410 forms self-capacitance for detecting position of touch；At fingerprint
Detection-phase, each first fingerprint detection electrode 410 and each second fingerprint detection electrode 420 form mutual capacitance for detecting fingerprint.
The above-mentioned In-cell touch panel that the embodiment of the present invention provides, when being touched by finger, at touch control detection stage, fingerprint
Each first fingerprint detection electrode in detection region forms self-capacitance and realizes the detection of position of touch；In the fingerprint detection stage, refer to
Each first fingerprint detection electrode and each second fingerprint detection electrode in stricture of vagina detection region can form mutual capacitance, due to Fingers
The impact of the capacitance of the valley and a ridge of the stricture of vagina mutual capacitance on being formed is different, therefore can be by detecting the electric capacity between each mutual capacitance
The change of value detects the information of the valley and a ridge of fingerprint, such that it is able to make In-cell touch panel realize fingerprint detection function.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, due on touch control detection rank
Section, self-capacitance electrode is made up of multiple the first separate fingerprint detection electrodes, the embodiment of the present invention provide above-mentioned in
In embedded touch screen, in order to reduce interfering of touch control detection stage and fingerprint detection stage, need to use touch control detection rank
The mode that section and the timesharing of fingerprint detection stage drive is driven.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, each first fingerprint detection electricity
Extremely drive electrode, each second fingerprint detection electrode is detection electrode；Or, each second fingerprint detection electrode is drive electrode,
Each first fingerprint detection electrode is detection electrode.Wherein, drive electrode loads fingerprint and drives signal, detection electrode output fingerprint spy
Survey signal.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, as in figure 2 it is shown, each second
Fingerprint detection electrode 420 is between each first fingerprint detection electrode 410 and array base palte 100.So touch display when finger
During screen, in the touch control detection stage, each second fingerprint detection electrode 420 first fingerprint detection electricity to forming self-capacitance can be avoided
The shielding action of pole 410 so that the signal that each first fingerprint detection electrode 410 produces is bigger.
Or, in the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, each first fingerprint inspection
Survey electrode between each second fingerprint detection electrode and array base palte.So when finger touches display screen, in touch control detection
In the stage, the shielding that may produce each second fingerprint detection electrode 420 first fingerprint detection electrode 410 to forming self-capacitance is made
With so that the signal that the first fingerprint detection electrode 410 produces is less.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, as in figure 2 it is shown, each first
Fingerprint detection electrode 410 and respective capacitance electrode 300 are with the same material of layer.So need not to increase and extra prepare each first fingerprint
The operation of detecting electrode 410, it is only necessary to respective capacitance electrode 300 and each first fingerprint inspection can be formed by a patterning processes
Survey the figure of electrode 410, it is possible to simplify preparation technology, save production cost, improve production efficiency.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, as in figure 2 it is shown, each second
Fingerprint detection electrode 420 is with the same material of layer.So have only to form each second fingerprint detection electricity by a patterning processes
The figure of pole 420, it is possible to simplify preparation technology, saves production cost, improves production efficiency.
It is preferred that in the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, as in figure 2 it is shown,
Each first fingerprint detection electrode 410 and respective capacitance electrode 300 are with the same material of layer, and each second same layer of fingerprint detection electrode 420
Same material.So have only to form respective capacitance electrode 300 and each first fingerprint detection electrode by a patterning processes
The figure of 410, and have only to can be formed the figure of each second fingerprint detection electrode 420 by patterning processes, it is possible to
Simplify preparation technology, save production cost, improve production efficiency.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, as in figure 2 it is shown, also include:
Insulating barrier 500 between each first fingerprint detection electrode 410 and each second fingerprint detection electrode 420.
In the specific implementation, in order to make each first fingerprint detection electrode not affect In-cell touch panel light transmission when display
The homogeneity of rate, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, also includes: be positioned at array base palte and to base
Black matrix layer between plate；
Black matrix layer covers the orthographic projection at array base palte of each first fingerprint detection electrode in the orthographic projection of array base palte.
In the specific implementation, in order to make each second fingerprint detection electrode not affect In-cell touch panel light transmission when display
The homogeneity of rate, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, also includes: be positioned at array base palte and to base
Black matrix layer between plate；
Black matrix layer covers the orthographic projection at array base palte of each second fingerprint detection electrode in the orthographic projection of array base palte.
It is preferred that in order to not affect In-cell touch panel homogeneity of light transmission rate when display, concrete real
Shi Shi, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, also includes: between array base palte and opposite substrate
Black matrix layer；
Black matrix layer covers the orthographic projection at array base palte of each first fingerprint detection electrode in the orthographic projection of array base palte, and
Black matrix layer covers the orthographic projection at array base palte of each second fingerprint detection electrode in the orthographic projection of array base palte.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, as in figure 2 it is shown, also include:
Multiple pixel cells 600 between array base palte 100 and opposite substrate 200.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, as it is shown in figure 1, also include:
With driving that respective capacitance electrode 300, each first fingerprint detection electrode 410 and each second fingerprint detection electrode 420 are electrically connected with
Dynamic chip 700；
Driving chip 700 is used for, in the touch control detection stage, to each first fingerprint detection electrode 410 and respective capacitance electrode
300 apply touch-control drives signal, and by detecting the change of the capacitance of respective capacitance electrode 300 and detecting each first fingerprint
The change of the capacitance sum of detecting electrode is to judge position of touch；
In the fingerprint detection stage, successively each first fingerprint detection electrode 410 is loaded fingerprint and drives signal, and by 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；Or, successively each second fingerprint detection electrode 420 is loaded fingerprint and drives signal, and referred to by detection each first
Capacitance variation between stricture of vagina 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 the above-mentioned In-cell touch panel that the embodiment of the present invention provides, due to each first fingerprint inspection
Survey electrode and be less than the orthographic projection at underlay substrate of the self-capacitance electrode area defined in the orthographic projection of underlay substrate so that from electricity
Hold the capacitance capacitance more than each first fingerprint detection electrode of electrode, therefore by the electricity by each first fingerprint detection electrode
Capacitance is added, and capacitance during each first fingerprint detection electrode formation self-capacitance in fingerprint detection region can be made electric with self-capacitance
The capacitance approximation of pole.When finger touches embedded display screen, in the touch control detection stage, each first fingerprint detection electrode is with each
Self-capacitance electrode all loads touch-control and drives signal, such that it is able to by the capacitance variation and the detection that detect respective capacitance electrode
The change of the capacitance sum of each first fingerprint detection electrode is to judge position of touch.
In the fingerprint detection stage, include X the second fingerprint detection electrode and Y the first fingerprint detection with fingerprint detection region
As a example by electrode, and driving chip the second fingerprint detection electrode loading fingerprint driving signal individual to Y successively, when Y first is referred to
When a second fingerprint detection electrode in stricture of vagina detecting electrode loads fingerprint driving signal, read each first fingerprint detection electricity respectively
The fingerprint detection signal extremely gone up, therefore after successively each second fingerprint detection electrode being loaded fingerprint driving signal, can read X
× Y fingerprint detection signal, such that it is able to according to read these fingerprint detection signals determine each first fingerprint detection electrode with
The position of the intersection point of each second fingerprint detection electrode, such that it is able to the position of concrete determination multiple spot, therefore can realize simultaneously
Detection to multiple valley and a ridges of fingerprint.When finger touch embedded display screen time, be equivalent to each first fingerprint detection electrode and
Capacitance between each second fingerprint detection electrode changes.Owing to ridge distance the first fingerprint detection electrode of fingerprint is nearer so that
Ridge is relatively big to the change of mutual capacitance, and paddy distance the first fingerprint detection electrode of fingerprint is farther out, and the change to mutual capacitance is less, because of
This, can be micro-by detect that the capacitance variation between each first fingerprint detection electrode and each second fingerprint detection electrode causes
Weak current is to judge the information of the valley and a ridge of fingerprint, so that In-cell touch panel realizes 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
Produce coupling electric capacity between pole thus affect the accuracy of touch control detection, in the above-mentioned embedded touch that the embodiment of the present invention provides
In screen, driving chip is additionally operable to, and in the touch control detection stage, loads each second fingerprint detection electrode and drives signal identical with touch-control
The signal of telecommunication.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, driving chip includes: signal
Input block, touch control detection unit, fingerprint detection unit；Wherein,
Signal input unit, in the touch control detection stage, executes each first fingerprint detection electrode and respective capacitance electrode
Add touch-control and drive signal；In the fingerprint detection stage, successively each first fingerprint detection electrode is loaded fingerprint and drive signal, or,
In the fingerprint detection stage, successively each second fingerprint detection electrode is loaded fingerprint and drive signal；
Touch control detection unit, in the touch control detection stage, by detect the change of the capacitance of respective capacitance electrode with
And detect the change of capacitance sum of each fingerprint detection electrode to judge position of touch；
Fingerprint detection unit, is used for, and in the fingerprint detection stage, examines by detecting the first fingerprint detection electrode and the second fingerprint
The information of the change of the capacitance between the survey electrode valley and a ridge to judge fingerprint.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, when driving chip is at fingerprint
When detection-phase loads fingerprint driving signal to each second fingerprint detection electrode successively, as it is shown on figure 3, fingerprint detection unit bag
Include: amplifier P, electric capacity C and switching device K；Wherein,
The inverting input p1 of amplifier P respectively with the first fingerprint detection electrode 410, first end of electric capacity C and switch
First end of device K is connected, and the in-phase input end p2 of amplifier P is connected with earth terminal VSS, and the output end p 3 of amplifier P is respectively
It is connected with second end of electric capacity C, second end of switching device K and voltage output end Output.
Or, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, when driving chip is in the fingerprint detection stage
When successively each first fingerprint detection electrode being loaded fingerprint driving signal, fingerprint detection unit includes: amplifier, electric capacity and switch
Device；Wherein,
The inverting input of amplifier respectively with the of the second fingerprint detection electrode, the first end of electric capacity and switching device
One end is connected, and the in-phase input end of amplifier is connected with earth terminal, the outfan of amplifier respectively with the second end, the switch of electric capacity
Second end of device and voltage output end are connected.
In the specific implementation, in order to reduce the signal delay of each first fingerprint detection electrode 410 and each second fingerprint detection
The delay of the signal of electrode 420, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, as it is shown in figure 1, driving chip
700 are positioned at an In-cell touch panel side edge around the neighboring area of viewing area；
Fingerprint detection region 400 is positioned at the side edge of the viewing area closest with driving chip 700.
Further, in the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, such as Fig. 1 institute
Showing, when each second fingerprint detection electrode 420 loading fingerprint and driving signal, each first fingerprint detection electrode 410 is along being perpendicular to
The direction of the side with the neighboring area of 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.So can reduce further for exporting fingerprint detection signal
The signal delay of the first fingerprint detection electrode, improves driving frequency, it is to avoid influence of noise, improves the precision of fingerprint detection.
Or, in the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, when referring to each first
When stricture of vagina detecting electrode loads fingerprint driving signal, each first fingerprint detection electrode edge is parallel to the neighboring area with driving chip
The direction of side extend, and each second fingerprint detection electrode is along being perpendicular to the side with the side of the neighboring area of driving chip
To extension.So can reduce the signal delay of the second fingerprint detection electrode for exporting fingerprint detection signal further, carry
High driving frequency, it is to avoid influence of noise, improves the accuracy of detection of fingerprint.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, array base palte can be glass
Glass substrate；Or, array base palte can also be flexible base board.In this no limit.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, opposite substrate can be glass
Glass substrate；Or, opposite substrate can also be flexible base board, in this no limit.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, the material of flexible base board is
Polyimides.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, the figure of respective capacitance electrode
Shape can be to be positioned at the black matrix fenestral fabric in the orthographic projection region of underlay substrate in the orthographic projection of underlay substrate.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, also include: examine with except fingerprint
Survey the respective capacitance electrode wire one to one in the region outside region；Wherein,
Respective capacitance electrode in region in addition to fingerprint detection region is electrical with driving chip by corresponding wire
Connect.
In the specific implementation, the embodiment of the present invention provide above-mentioned In-cell touch panel in, each pixel cell include to
A few organic electroluminescence structure；
When each first fingerprint detection electrode is between each second fingerprint detection electrode and array base palte, embedded touch
Screen also includes: the first encapsulated layer between organic electroluminescence structure and each first fingerprint detection electrode.
Or, in the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, as in figure 2 it is shown, respectively
Pixel cell 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 base palte 100,
In-cell touch panel also includes: the second encapsulation between organic electroluminescence structure and each second fingerprint detection electrode 420
Layer 800.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, array base palte and to base
Plate is flexible base board,
When each first fingerprint detection electrode is between each second fingerprint detection electrode and array base palte, each self-capacitance electricity
Pole, each first fingerprint detection electrode and each second fingerprint detection electrode are all to use to print technique in the first encapsulated layer making shape
Become；Or,
When each second fingerprint detection electrode is between each first fingerprint detection electrode and array base palte, time each self-capacitance electricity
Pole, each first fingerprint detection electrode and each second fingerprint detection electrode are all to use to print technique in the second encapsulated layer making shape
Become.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, the first encapsulation is layer by layer with the
Two encapsulated layers include the first silicon nitride layer, fire sand layer and the second silicon nitride layer that stacking is arranged respectively.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, the film of the first silicon nitride layer
Thickness is 0.6 μm, and the thickness of fire sand layer is 0.5 μm, and the thickness of the second silicon nitride layer is 0.6 μm.
In the specific implementation, in the above-mentioned In-cell touch panel that the embodiment of the present invention provides, also include being positioned at adjacent two
Pixel between individual organic electroluminescence structure defines layer.
In the specific implementation, it is also possible to the above-mentioned driving chip that display chip and the embodiment of the present invention of display are provided
Being integrated into a chip, the above-mentioned In-cell touch panel that the embodiment of the present invention so can be made to provide reduces further and produces into
This.
Based on same inventive concept, the embodiment of the present invention additionally provides any of the above-described kind that a kind of embodiment of the present invention provides
The driving method of In-cell touch panel, as shown in Figure 4, including: touch control detection stage and fingerprint detection stage；Wherein,
S401, in the touch control detection stage, each first fingerprint detection electrode and respective capacitance electrode are loaded touch control detection letter
Number, and by detecting the change of the capacitance of respective capacitance electrode and detecting the capacitance sum of each first fingerprint detection electrode
Change to judge position of touch；
S402, in the fingerprint detection stage, successively to each first fingerprint detection electrode load fingerprint drive signal, and by inspection
Survey the change of capacitance between each first fingerprint detection electrode and each second fingerprint detection electrode with the valley and a ridge judging fingerprint
Information；Or, successively each second fingerprint detection electrode is loaded fingerprint and drives signal, and by detecting each first fingerprint detection
The information of the change of the capacitance between electrode and each second fingerprint detection electrode valley and a ridge to judge fingerprint.
Further, in the specific implementation, in the above-mentioned driving method that the embodiment of the present invention provides, also include: touching
Control detection-phase, loads each second fingerprint detection electrode and drives, with touch-control, the signal of telecommunication that signal is identical.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of display device, carries including the embodiment of the present invention
The above-mentioned In-cell touch panel of confession.The principle that this display device solves problem is similar to aforementioned In-cell touch panel, and therefore this shows
The enforcement of showing device may refer to the enforcement of aforementioned In-cell touch panel, does not repeats them here in place of repetition.
In the specific implementation, in the above-mentioned display device that the embodiment of the present invention provides, display device can be: mobile phone,
Any product with display function or the portions such as panel computer, television set, display, notebook computer, DPF, navigator
Part.Other requisite ingredient of this display device is and it will be apparent to an ordinarily skilled person in the art that have
, do not repeat at this, also should not be taken as limiting the invention.The enforcement of this display device may refer to above-mentioned encapsulating structure
Embodiment, repeat no more in place of repetition.
In-cell touch panel, its driving method and the display device that the embodiment of the present invention provides, when being touched by finger,
In the touch control detection stage, each first fingerprint detection electrode in fingerprint detection region forms self-capacitance and realizes the detection of position of touch；
Each first fingerprint detection electrode and each second fingerprint detection electrode in fingerprint detection stage, fingerprint detection region can be formed
Mutual capacitance, owing to the valley and a ridge of finger print is different on the impact of the capacitance of the mutual capacitance of formation, therefore can be by detection
The change of the capacitance between each mutual capacitance detects the information of the valley and a ridge of fingerprint, such that it is able to make In-cell touch panel realize
Fingerprint detection function.
Obviously, those skilled in the art can carry out various change and the modification essence without deviating from the present invention to the present invention
God and scope.So, if these amendments of the present invention and modification belong to the scope of the claims in the present invention and equivalent technologies thereof
Within, then the present invention is also intended to comprise these change and modification.
Claims (12)
1. an In-cell touch panel, including: the array base palte being oppositely arranged and opposite substrate and be positioned at described array base palte
And the multiple self-capacitance electrodes between described opposite substrate, it is characterised in that described In-cell touch panel also includes fingerprint detection
Region, and the self-capacitance electrode being positioned in described fingerprint detection region is by multiple the first separate fingerprint detection electrode groups
Become；
It is multiple separate that described fingerprint detection region also includes between described array base palte and described opposite substrate
Second fingerprint detection electrode, and each described second fingerprint detection electrode with each described first fingerprint detection electrode crossing arrange and
Mutually insulated；
In the touch control detection stage, each described first fingerprint detection electrode forms self-capacitance and is used for detecting position of touch；Examine at fingerprint
Survey stage, each described first fingerprint detection electrode and each described second fingerprint detection electrode form mutual capacitance and are used for detecting fingerprint.
2. In-cell touch panel as claimed in claim 1, it is characterised in that each described first fingerprint detection electrode is positioned at each institute
State between the second fingerprint detection electrode and described array base palte；Or,
Each described second fingerprint detection electrode is between each described first fingerprint detection electrode and described array base palte.
3. In-cell touch panel as claimed in claim 1, it is characterised in that each described first fingerprint detection electrode is described with each
Self-capacitance electrode is with the same material of layer；And/or,
Each described second fingerprint detection electrode is with the same material of layer.
4. In-cell touch panel as claimed in claim 1, it is characterised in that also include: be positioned at each described first fingerprint detection
Insulating barrier between electrode and each described second fingerprint detection electrode.
5. the In-cell touch panel as described in any one of claim 1-4, it is characterised in that also include: be positioned at described array base
Black matrix layer between plate and described opposite substrate；
Described black matrix layer covers each described first fingerprint detection electrode at described array base in the orthographic projection of described array base palte
The orthographic projection of plate；And/or,
Described black matrix layer covers each described second fingerprint detection electrode at described array base in the orthographic projection of described array base palte
The orthographic projection of plate.
6. the In-cell touch panel as described in any one of claim 1-4, it is characterised in that also include: with each described self-capacitance
The driving chip that electrode, each described first fingerprint detection electrode and each described second fingerprint detection electrode are electrically connected with；
Described driving chip is used for, in the described touch control detection stage, to each described first fingerprint detection electrode and each described electricity certainly
Hold electrode and apply touch-control driving signal, and by detecting the change of the capacitance of each described self-capacitance electrode and detecting each described
The change of the capacitance sum of the first fingerprint detection electrode is to judge position of touch；
In the described fingerprint detection stage, successively each described first fingerprint detection electrode is loaded fingerprint and drive signal, and by inspection
Survey the capacitance variation between each described first fingerprint detection electrode and each described second fingerprint detection electrode to judge fingerprint
The information of valley and a ridge；Or, successively each described second fingerprint detection electrode is loaded fingerprint and drive signal, and by detecting each institute
State the capacitance variation between the first fingerprint detection electrode and each described second fingerprint detection electrode to judge the valley and a ridge of fingerprint
Information.
7. In-cell touch panel as claimed in claim 6, it is characterised in that described driving chip is additionally operable to, at described touch-control
Detection-phase, loads each described second fingerprint detection electrode and drives, with described touch-control, the signal of telecommunication that signal is identical.
8. In-cell touch panel as claimed in claim 7, it is characterised in that described driving chip is positioned at described embedded touch
Shield a side edge of the neighboring area around viewing area；
Described fingerprint detection region is positioned at the side edge of the viewing area closest with described driving chip.
9. In-cell touch panel as claimed in claim 6, it is characterised in that when each described first fingerprint detection electrode is loaded
When fingerprint drives signal, each described first fingerprint detection electrode edge is parallel to the side with the neighboring area of described driving chip
Direction extend, and each described second fingerprint detection electrode is along the side being perpendicular to have the neighboring area of described driving chip
Direction extends；Or,
When each described second fingerprint detection electrode loading fingerprint and driving signal, each described first fingerprint detection electrode is along vertical
The direction of the side in the neighboring area with described driving chip extends, and each described second fingerprint detection electrode is along being parallel to tool
The direction having the side of the neighboring area of described driving chip extends.
10. a display device, it is characterised in that include the In-cell touch panel as described in any one of claim 1-9.
The driving method of 11. 1 kinds of In-cell touch panel as described in any one of claim 6-9, it is characterised in that including: touch
Control detection-phase and fingerprint detection stage；Wherein,
In the described touch control detection stage, each described first fingerprint detection electrode and each described self-capacitance electrode are loaded touch control detection
Signal, and by detecting the change of the capacitance of each described self-capacitance electrode and detecting each described first fingerprint detection electrode
The change of capacitance sum is to judge position of touch；
In the described fingerprint detection stage, successively each described first fingerprint detection electrode is loaded fingerprint and drive signal, and by inspection
The change surveying the capacitance between each described first fingerprint detection electrode and each described second fingerprint detection electrode is described to judge
The information of the valley and a ridge of fingerprint；Or, successively each described second fingerprint detection electrode is loaded fingerprint and drive signal, and by inspection
The change surveying the capacitance between each described first fingerprint detection electrode and each described second fingerprint detection electrode is described to judge
The information of the valley and a ridge of fingerprint.
12. driving methods as claimed in claim 11, it is characterised in that also include: in the described touch control detection stage, to each institute
State the second fingerprint detection electrode and load the signal of telecommunication identical with described touch-control driving signal.
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