CN111061398B - Touch display panel, touch compensation method thereof and touch display device - Google Patents
Touch display panel, touch compensation method thereof and touch display device Download PDFInfo
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- CN111061398B CN111061398B CN201911350099.7A CN201911350099A CN111061398B CN 111061398 B CN111061398 B CN 111061398B CN 201911350099 A CN201911350099 A CN 201911350099A CN 111061398 B CN111061398 B CN 111061398B
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- 101000872083 Danio rerio Delta-like protein C Proteins 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 18
- 238000010586 diagram Methods 0.000 description 22
- 230000035945 sensitivity Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
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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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
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- Position Input By Displaying (AREA)
Abstract
The embodiment of the invention provides a touch display panel, a touch compensation method thereof and a touch display device, wherein the touch display panel comprises a first substrate and a second substrate, a first electrode and a plurality of supporting structures are formed on one side of the first substrate facing the second substrate, and a touch electrode and at least one group of touch reference electrode groups are formed on one side of the second substrate facing the first substrate; the touch electrode and the touch reference electrode group are positioned on the same side of the supporting structure; the touch control electrode is input with a touch control signal, and the touch control reference electrode group is input with a touch control reference signal, wherein the touch control signal is the same as the touch control reference signal. According to the technical scheme provided by the embodiment of the invention, the capacitance change on the touch control reference electrode is compensated for the capacitance change on the touch control electrode, so that the phenomenon that the touch control electrode is wrongly reported due to the capacitance change after the touch control display panel is deformed can be avoided, the touch control detection accuracy of the touch control display panel is improved, and the occurrence of touch control wrongly reported is avoided.
Description
Technical Field
The embodiment of the invention relates to the technical field of touch display, in particular to a touch display panel, a touch compensation method thereof and a touch display device.
Background
An Organic Light-Emitting Diode (OLED) is widely used in the field of high-performance display as a current-driven type Light-Emitting device having advantages of self-luminescence, fast response, wide viewing angle, and being fabricated on a flexible substrate.
OLED products integrating touch control function are increasingly developed, and when the OLED products integrating touch control function deform, the capacitance of a touch control electrode changes, touch control false alarm can be generated, and touch control accuracy is affected.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a touch display panel, a touch compensation method thereof, and a touch display device, so as to solve the technical problem of touch error reporting caused by deformation of the touch display panel in the prior art.
In a first aspect, an embodiment of the present invention provides a touch display panel, including a first substrate and a second substrate, where a first electrode and a plurality of support structures are formed on a side of the first substrate facing the second substrate, and a touch electrode and at least one touch reference electrode group are formed on a side of the second substrate facing the first substrate;
the touch electrode and the touch reference electrode group are positioned on the same side of the supporting structure; the touch control electrode is input with a touch control signal, the touch control reference electrode group is input with a touch control reference signal, and the touch control signal is the same as the touch control reference signal.
In a second aspect, an embodiment of the present invention further provides a touch compensation method for a touch display panel, configured to perform touch compensation on the touch display panel in the first aspect, including:
respectively acquiring a first capacitance change parameter of the touch electrode and a second capacitance change parameter of the touch reference electrode group;
determining compensation parameters of the touch electrode according to the first capacitance change parameters and the second capacitance change parameters;
and carrying out capacitance compensation on the touch electrode according to the compensation parameter.
In a third aspect, an embodiment of the present invention further provides a touch display device, including the touch display panel of the first aspect.
According to the touch display panel, the touch compensation method and the touch display device, the touch electrode and at least one group of touch reference electrode groups are formed on one side of the second substrate facing the first substrate, the touch electrode and the touch reference electrode groups are positioned on the same side of the supporting structure, the touch signal is input on the touch electrode, the touch reference signal is input on the touch reference electrode groups, when the touch display panel is deformed, the capacitance change on the touch reference electrode is compensated for the capacitance change on the touch electrode, the phenomenon that the touch electrode is wrongly reported due to the capacitance change after the touch display panel is deformed is avoided, the touch detection accuracy of the touch display panel is improved, and the occurrence of touch misreporting is avoided.
Drawings
In order to more clearly illustrate the technical solution of the exemplary embodiments of the present invention, a brief description is given below of the drawings required for describing the embodiments. It is obvious that the drawings presented are only drawings of some of the embodiments of the invention to be described, and not all the drawings, and that other drawings can be made according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a touch display panel in the prior art;
FIG. 2 is a schematic cross-sectional view of the touch display panel of FIG. 1 along the section line A-A';
fig. 3 is a schematic structural diagram of a touch display panel according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of the touch display panel shown in FIG. 3 along the section line B-B';
fig. 5 is a schematic structural diagram of another touch display panel according to an embodiment of the invention;
fig. 6 is a schematic structural diagram of another touch display panel according to an embodiment of the invention;
FIG. 7 is a schematic cross-sectional view of the touch display panel of FIG. 6 along the section line C-C';
fig. 8 is a schematic structural diagram of another touch display panel according to an embodiment of the invention;
Fig. 9 is a schematic structural diagram of another touch display panel according to an embodiment of the invention;
FIG. 10 is a schematic cross-sectional view of the touch display panel of FIG. 9 along the section line D-D';
fig. 11 is a schematic structural diagram of another touch display panel according to an embodiment of the invention;
fig. 12 is a schematic structural diagram of another touch display panel according to an embodiment of the invention;
fig. 13 is a flowchart of a touch compensation method of a touch display panel according to an embodiment of the invention;
fig. 14 is a schematic structural diagram of a touch display device according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be fully described below by way of specific embodiments with reference to the accompanying drawings in the examples of the present invention. It is apparent that the described embodiments are some, but not all, embodiments of the present invention, and that all other embodiments, which a person of ordinary skill in the art would obtain without making inventive efforts, are within the scope of this invention.
Fig. 1 is a schematic structural diagram of a touch display panel in the prior art, fig. 2 is a schematic structural diagram of a cross section of the touch display panel provided in fig. 1 along a section line A-A ', and as shown in fig. 1 and 2, the conventional touch display panel may include a first substrate 10' and a second substrate 20', wherein a side of the first substrate 10' facing the second substrate 20' is formed with a first electrode 30' and a plurality of supporting structures 40', a side of the second substrate 20' facing the first substrate 10' is formed with a touch electrode 50', and a touch signal is input on the touch electrode 50 '. When a touch occurs on the touch display panel, the capacitance (self capacitance or mutual capacitance) on the touch electrode 50' changes, so that the touch signal on the touch electrode 50' changes, and the touch position and the touch pressure can be detected according to the position and the degree of the change of the touch signal on the touch electrode 50 '.
Further, as shown in fig. 2, the touch electrode 50' is disposed above the supporting structure 40', and when the supporting structure 40' is deformed due to dropping or backlog of the touch display panel, the capacitance on the touch electrode 50' will change, so that the touch signal on the touch electrode 50' will also change, which may cause a touch false alarm point to affect the touch accuracy of the touch display panel. Based on the technical problems, the embodiment of the invention provides a touch display panel, which comprises a first substrate and a second substrate, wherein a first electrode and a plurality of supporting structures are formed on one side of the first substrate facing the second substrate, and a touch electrode and at least one group of touch reference electrode groups are formed on one side of the second substrate facing the first substrate; the touch electrode and the touch reference electrode group are positioned on the same side of the supporting structure; the touch control electrode is input with a touch control signal, and the touch control reference electrode group is input with a touch control reference signal, wherein the touch control signal is the same as the touch control reference signal. The touch control electrode and at least one group of touch control reference electrode groups are formed on one side of the second substrate facing the first substrate, the touch control electrode and the touch control reference electrode groups are positioned on the same side of the supporting structure, touch control signals are input on the touch control electrode, and touch control reference signals are input on the touch control reference electrode groups. When the touch display panel deforms, the capacitance change on the touch reference electrode is compensated for by the capacitance change on the touch reference electrode, so that the phenomenon that the touch electrode is wrongly reported due to the capacitance change after the touch display panel deforms is avoided, the touch detection accuracy of the touch display panel is improved, and the touch misreport is avoided.
The foregoing is the core idea of the present invention, and the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without making any inventive effort are intended to fall within the scope of the present invention.
Fig. 3 is a schematic structural diagram of a touch display panel according to an embodiment of the present invention, and fig. 4 is a schematic structural diagram of a cross section of the touch display panel provided in fig. 3 along a section line B-B', as shown in fig. 3 and fig. 4, the touch display panel according to an embodiment of the present invention includes a first substrate 10 and a second substrate 20, a side of the first substrate 10 facing the second substrate 20 is formed with a first electrode 30 and a plurality of support structures 40, and a side of the second substrate 20 facing the first substrate 10 is formed with a touch electrode 50 and at least one group of touch reference electrode groups 60. The touch electrode 50 and the touch reference electrode set 60 are located on the same side of the support structure 40, a touch signal is input to the touch electrode 50, and a touch reference signal is input to the touch reference electrode set 60, wherein the touch signal and the touch reference signal are the same.
Referring to fig. 3 and 4, a plurality of support structures 40 and first electrodes 30 are disposed on a side of the first substrate 10 facing the second substrate 20, and a touch electrode 50 and at least one set of touch reference electrode sets 60 are formed on a side of the second substrate 20 facing the first substrate 10, wherein the touch electrode 50 and the at least one set of touch reference electrode sets 60 are disposed on the same side of the support structures 40, so as to ensure that capacitance changes of the touch electrode 50 and the touch reference electrode sets 60 caused by deformation of the support structures 40 are consistent or substantially consistent.
Further, the touch signal input to the touch electrode 50 is the same as the touch reference signal input to the touch reference electrode set 60, so that the rate of change of capacitance due to deformation of the support structure 40 is the same for the touch electrode 50 and the touch reference electrode set 60 at the same position of the support structure 40, and the rate of change of capacitance can be understood as the ratio between the amount of change of capacitance and the initial value of capacitance. In this way, the capacitance change of the touch electrode 50 is compensated by the capacitance change of the touch reference electrode set 60, so as to compensate the capacitance change of the touch electrode 50 caused by the deformation of the supporting structure 40, avoid the occurrence of touch false alarm points of the touch electrode 50, ensure that the touch alarm points of the touch electrode are all generated due to touch operation, and improve the touch detection accuracy of the touch display panel.
It should be noted that, the touch display panel provided in the embodiment of the present invention may include a plurality of groups of touch reference electrode groups 60, the number of the touch reference electrode groups 60 is not limited in the embodiment of the present invention, fig. 3 and fig. 4 only take two groups of touch reference electrode groups 61 and 62 as an example, and fig. 5 exemplarily shows that the number of the touch reference electrode groups 60 is four.
It should be noted that, the touch electrode 50 provided in the embodiment of the present invention may be a self-capacitance touch electrode or a mutual-capacitance touch electrode, which is not limited in the embodiment of the present invention, and fig. 3 and fig. 4 only illustrate the touch electrode 50 as a self-capacitance touch electrode.
In summary, in the touch display panel according to the embodiment of the invention, the touch electrode and at least one group of touch reference electrode groups are formed on the side, facing the first substrate, of the second substrate, and the touch electrode and the touch reference electrode groups are located on the same side of the supporting structure, the touch signal is input on the touch electrode, the touch reference signal is input on the touch reference electrode groups, when the touch display panel is deformed, the capacitance change on the touch electrode groups is compensated by the capacitance change on the touch reference electrode groups, so that the touch display panel is prevented from generating false alarm point phenomenon due to the capacitance change after the touch display panel is deformed, the touch detection accuracy of the touch display panel is improved, and the occurrence of touch false alarm is avoided.
Optionally, each touch reference electrode group corresponds to at least one touch electrode, and among the touch electrodes corresponding to each touch reference electrode group, the initial capacitance value of the ith touch electrode is the first capacitance C 1i When the support structure deforms, the deformation capacitance value of the ith touch electrode is the second capacitance C 2i I is more than or equal to 1 and i is an integer.
The initial capacitance of the touch reference electrode set 60 is the third capacitance C 3 The deformation capacitance of the touch reference electrode set 60 is the fourth capacitance C when the support structure is deformed 4 。
When the support structure is deformed, the capacitance compensation parameter Δc of the touch electrode 50 satisfies
Wherein K is a compensation coefficient, K is a constant, and N is the number of touch electrodes corresponding to each touch reference electrode group.
The value of the compensation coefficient K is related to the number, thickness and material of other layers between the layer where the touch electrode is located and the layer where the support structure is located, and is also related to touch accuracy setting. C (C) 4 -C 3 To change the capacitance of the touch reference electrode set 60 when the support structure 40 is deformed,for the capacitance change rate of the touch electrode 50 at the deformed position after the deformation of the supporting structure 40, wherein +.>The capacitance change of all the touch electrodes 50 in the touch reference electrode set 60 where the touch electrodes 50 are located at the deformation position of the support structure 40 is determined. By calculating the capacitance change rate of the touch electrode 50 and the capacitance change amount of the touch reference electrode set 60, the capacitance compensation parameter DeltaC of the touch electrode 50 is solved according to the ratio of the capacitance change rate and the capacitance change amount of the touch reference electrode set 60.
When the supporting structure 40 is not deformed, the initial capacitance value of the ith touch electrode among the touch electrodes corresponding to each touch reference electrode set is the first capacitance C 1i The initial capacitance of the touch reference electrode set 60 is the third capacitance C3, and after the support structure 40 is deformed, the deformed capacitance of the ith touch electrode is the second capacitance C 2i The deformation capacitance of the touch reference electrode set 60 is the fourth capacitance C4. When the positions of the touch electrode 50 and the touch reference electrode 60 are the same or similar, the deformation of the support structure 40 affects both the touch electrode 50 and the touch reference electrode 60, and the capacitance compensation of at least Δc is performed on the touch electrode 50 by the capacitance change amount of the touch reference electrode set 60 and the capacitance change rate of the touch electrode 50, so that the compensation of the capacitance change generated by the deformation of the support structure 40 is ensured, and the touch detection sensitivity of the touch electrode 50 is further improved. Further, after the capacitance compensation is performed on the touch electrodes 50 according to the capacitance compensation parameter Δc, the IC first scans the capacitance change of each touch electrode 50 to identify the position responding to the touch action, so as to ensure high touch detection accuracy and sensitivity, and avoid the false alarm phenomenon caused by the deformation of the support structure 40.
It should be noted that, the compensation parameter Δc of the touch electrode 50 is a range value satisfying the formula, and any compensation parameter within the range value is a protection range of the embodiment of the present invention, and the embodiment of the present invention does not limit specific values of the compensation parameter.
Further, the number of the touch electrodes 50 corresponding to each touch reference electrode set 60 may be the same or different, and the present invention does not limit the number of the touch electrodes 50 corresponding to each touch reference electrode set 60.
Alternatively, based on the above embodiments, the touch electrode 50 and the touch reference electrode set 60 may be disposed on the same layer, or may be disposed on different layers, and different disposing manners of the touch electrode 50 and the touch reference electrode set 60 will be described in detail below.
First, the same layer arrangement of the touch electrode 50 and the touch reference electrode set 60 will be described.
Further, the touch electrode 50 may be a self-capacitance touch electrode or a mutual capacitance touch electrode. Here, the touch electrode 50 is a self-capacitance touch electrode, and the touch electrode 50 and the touch reference electrode set 60 are disposed in the same layer.
With continued reference to fig. 3 and 4, the self-contained touch electrode 50 includes a plurality of first touch electrode blocks 510, each touch reference electrode group 60 includes at least one touch reference electrode 600, and the touch reference electrode 600 is disposed between two adjacent first touch electrode blocks 510.
As shown in fig. 3, the touch reference electrode set 61 includes at least one touch reference electrode 610, and the touch reference electrode set 62 includes at least one touch reference electrode 620. By arranging the touch reference electrode 600 between two adjacent first touch electrode blocks 510, when the capacitance of the touch electrode 50 changes due to the deformation of the support structure 40, the touch reference electrode 600 can sense the deformation of the support structure 40 through the self capacitance change, and compensate the capacitance change of the touch electrode 50 through the capacitance change of the touch reference electrode group 60, so as to compensate the capacitance change of the touch electrode 50 due to the deformation of the support structure 40. For the touch electrode 50, the touch reference electrode 600 is disposed between the adjacent touch electrode blocks 510, so as to improve the touch detection accuracy of the touch display panel.
Optionally, each touch reference electrode group 60 includes a plurality of touch reference electrodes 600 electrically connected to each other, and a touch reference electrode 600 is disposed between any two adjacent first touch electrode blocks 510.
Each touch reference electrode group 60 includes a plurality of touch reference electrodes 600, and a touch reference electrode 600 is disposed between any two adjacent first touch electrode blocks 510, and the touch reference electrodes 600 are arranged between any two adjacent first touch electrode blocks 510. When the supporting structure 40 of the touch display panel is deformed, the capacitance value of the first touch electrode block 510 corresponding to or adjacent to the deformed position is changed, and the capacitance value of the touch reference electrode 600 disposed adjacent to the first touch electrode block 510 is also changed due to the deformation of the supporting structure 40. By arranging the touch reference electrode 600 between each group of touch reference electrode groups 60 between any two adjacent first touch electrode blocks 510, after the support structure 40 of the touch display panel is deformed, the capacitance variation of the first touch electrode blocks 510 and the touch reference electrode 600 adjacent to the first touch electrode blocks 510 is calculated, so that the capacitance variation of the first touch electrode blocks 510 is compensated by the capacitance variation of the touch reference electrode blocks 600, the capacitance variation of each first touch electrode block 510 caused by the deformation of the support structure 40 is compensated, and the occurrence of touch error reporting points of the first touch electrode blocks 510 is avoided, so that the touch detection precision of the touch display panel is higher.
It should be noted that, the touch reference electrode set 61 includes at least one touch reference electrode 610, the touch reference electrode set 62 includes at least one touch reference electrode 620, and reference numerals 610 and 620 are used to indicate the touch reference electrode 600, and different reference numerals are used to distinguish the touch reference electrodes 600 of different touch reference electrode sets 60.
It should be noted that, the touch reference electrodes 600 of each touch reference electrode set 60 are electrically connected to each other, the touch reference electrode set 60 is connected to the driving IC 70 through the touch reference signal trace 650, and the touch reference electrodes 600 of each touch reference electrode set 60 are electrically connected to each other to ensure that each touch reference electrode 600 of the touch reference electrode set 60 obtains the same touch reference signal.
Optionally, with continued reference to fig. 3, the touch display panel further includes a touch signal trace 500 and a touch reference signal trace 650, the touch signal trace 500 is electrically connected to the touch electrode 50, the touch reference signal trace 650 is electrically connected to the touch reference electrode group 60, and the touch signal trace 500 and the touch reference signal trace 650 are disposed in the same layer.
For example, fig. 3 illustrates only a portion of the touch electrode blocks 510 of the self-capacitive touch electrode 50 connected to the driving IC 70 through the touch signal trace 500, and it is understood that each of the self-capacitive touch electrode blocks 510 is connected to the driving IC 70 through the touch signal trace. The self-capacitance type touch reference electrode sets 60 are connected to the driving IC 70 through the touch reference signal wires 650, and it is understood that when the touch reference electrode sets 60 are multiple, each touch reference electrode set 60 is connected to the driving IC 70 through the touch reference signal wires 650. Further, the touch signal trace 500 and the touch reference signal trace 650 may be disposed on the same layer and prepared in the same preparation process, so that the film layer of the display panel is ensured to have a simple structure, and meanwhile, the preparation processes of the touch signal trace 500 and the touch reference signal trace 650 are ensured to be simple.
It should be noted that, in order to clearly show the touch reference signal trace 650 in the drawings, the touch reference signal trace 650 is shown in bold in the drawings corresponding to the embodiments of the present invention.
In summary, in the touch display panel provided by the embodiment of the invention, at least one group of touch reference electrode groups is arranged between the self-contained touch electrode blocks, and the touch reference electrodes are arranged between two adjacent first touch electrode blocks, when the touch display device is deformed, the capacitance value of the touch electrode change at the deformation position of the support structure can be compensated by the deformation capacitance value of the touch reference electrode groups, the capacitance change of the touch electrode caused by the deformation of the support structure is compensated, the touch error reporting point of the touch electrode is avoided, the touch detection sensitivity of the touch electrode is further improved, and the touch reference electrode groups are better ensured to have higher compensation precision when the touch electrode is compensated.
Optionally, fig. 6 is a schematic structural diagram of another display panel provided by the embodiment of the present invention, specifically, a schematic structural diagram of a mutual capacitance type touch display panel, fig. 7 is a schematic structural diagram of a cross section line C-C' of the touch display panel provided by fig. 6, as shown in fig. 6 and fig. 7, the touch electrode 50 includes a mutual capacitance type touch electrode 50, the mutual capacitance type touch electrode 50 includes a touch driving electrode 51 and a touch sensing electrode 52, and the touch driving electrode 51 and the touch sensing electrode 52 are disposed on the same layer.
The touch driving electrode 51 comprises a plurality of second touch electrode blocks 530, two adjacent second touch electrode blocks 530 are electrically connected through a first connecting bridge, and the first connecting bridge and the second touch electrode blocks 530 are arranged in the same layer; the touch sensing electrode 52 includes a plurality of third touch electrode blocks 540, and two adjacent third touch electrode blocks 540 are electrically connected through a second connecting bridge, and the second connecting bridge is arranged in different layers with the third touch electrode blocks 540.
Each touch reference electrode group 60 includes at least one touch reference electrode 600, and touch reference electrodes 600 are disposed between second touch electrode blocks 530 disposed adjacently, or touch reference electrodes 600 are disposed between third touch electrode blocks 540 disposed adjacently.
With continued reference to fig. 6 and 7, fig. 6 and 7 exemplarily illustrate four sets of touch reference electrode sets 60 and four sets of touch reference electrodes 600 disposed between the second touch electrode blocks 530. As shown in fig. 6, the touch reference electrode set 61 includes at least one touch reference electrode 610, the touch reference electrode set 62 includes at least one touch reference electrode 620, the touch reference electrode set 63 includes at least one touch reference electrode 630, and the touch reference electrode set 64 includes at least one touch reference electrode 640. By arranging the touch reference electrode 600 between two adjacent second touch electrode blocks 530, when the capacitance value of the touch driving electrode 51 changes due to the deformation of the supporting structure 40, the capacitance change of the touch driving electrode 51 is compensated by the capacitance change of the touch reference electrode group 60, and the capacitance change of the touch driving electrode 51 due to the deformation of the supporting structure 40 is compensated. For the touch driving electrode 51, the touch reference electrode 600 is disposed between the adjacent second touch electrode blocks 530, so as to better improve the touch detection accuracy of the touch display panel.
Optionally, each touch reference electrode group 60 includes a plurality of touch reference electrodes 600 electrically connected to each other, and the touch reference electrodes 600 are disposed between any two adjacent second touch electrode blocks 530, or the touch reference electrodes are disposed between any two adjacent third touch electrode blocks.
With continued reference to fig. 6, fig. 6 illustrates that a plurality of touch reference electrodes 600 are disposed in each touch reference electrode group 60, and a touch reference electrode 600 is disposed between two adjacent second touch electrode blocks 530, and the touch reference electrode 600 is disposed between any two adjacent second touch electrode blocks 530. When the supporting structure 40 of the touch display panel is deformed, the capacitance value of the second touch electrode block 530 corresponding to or adjacent to the deformed position is changed, and the capacitance value of the touch reference electrode 600 disposed adjacent to the second touch electrode block 530 is also changed due to the deformation of the supporting structure 40. By arranging the touch reference electrode 600 between any two adjacent second touch electrode blocks 530, after the support structure 40 of the touch display panel is deformed, the capacitance variation of the second touch electrode blocks 530 and the touch reference electrode 600 adjacent to the second touch electrode blocks 530 is calculated, so that the capacitance variation of the touch electrode 50 is compensated by the capacitance variation of the touch reference electrode 600, the capacitance variation of each touch electrode block 50 caused by the deformation of the support structure 40 is compensated, and the occurrence of touch error reporting points of the touch electrode blocks 50 is avoided, so that the touch detection precision of the touch display panel is higher.
It should be noted that, when the capacitance of the touch electrode changes due to the deformation of the support structure 40, the touch driving electrode may be compensated, or the touch sensing electrode may be supplemented. When compensating the touch sensing electrodes, the touch reference electrode 600 may also be disposed between the third touch electrode blocks 540, and the capacitance compensation principle of the touch reference electrode set 60 for the touch sensing electrodes 52 is the same as that of the touch reference electrode set 60 for the touch driving electrodes 51, which is not described in detail herein.
With continued reference to fig. 6, the touch display panel further includes a touch signal trace 500 and a touch reference signal trace 650, where the touch signal trace 500 includes a touch driving electrode trace 510 and a touch sensing electrode trace 520, the touch signal trace 500 is electrically connected to the touch electrode 50, the touch reference signal trace 650 is electrically connected to the touch reference electrode group 60, and the touch signal trace 500 and the touch reference signal trace 650 are disposed on the same layer.
In summary, in the touch display panel provided by the embodiment of the invention, at least one group of touch reference electrode groups is arranged between the touch driving electrode blocks or the touch sensing electrode blocks of the mutual capacitance type touch electrode, and the touch reference electrode is arranged between two adjacent touch driving electrode blocks or touch sensing electrode blocks, when the touch display device is deformed, the deformation capacitance value of the touch reference electrode groups can be used for compensating the capacitance value of the touch electrode change at the deformation position of the support structure, the capacitance change of the touch electrode caused by the deformation of the support structure is compensated, the touch error reporting point of the touch electrode is avoided, the touch detection sensitivity of the touch electrode is further improved, and the touch reference electrode groups are better ensured to have higher compensation precision when the touch electrode is compensated.
Optionally, fig. 8 is a schematic structural diagram of another display panel provided by the embodiment of the present invention, fig. 9 is a schematic structural diagram of another touch display panel provided by the embodiment of the present invention, and fig. 8 and fig. 9 each illustrate an example in which the touch electrodes are mutually capacitive touch electrodes, and the touch driving electrodes and the touch sensing electrodes are arranged in different layers. As shown in fig. 8 and 9, the mutual capacitance type touch electrode includes a touch driving electrode 51 and a touch sensing electrode 52, wherein the touch driving electrode 51 and the touch sensing electrode 52 are arranged in different layers. The touch driving electrode 51 and the touch reference electrode set 60 are disposed on the same layer as shown in fig. 8. The touch driving electrode 51 includes a plurality of touch driving electrode bars 550, each touch reference electrode group 60 includes at least one touch reference electrode 600, and touch reference electrodes 600 are disposed between the touch driving electrode bars 550 adjacently disposed. Alternatively, the touch sensing electrodes 52 and the touch reference electrode groups 60 are arranged in the same layer, the touch sensing electrodes 52 include a plurality of touch sensing electrode strips, each group of touch reference electrode groups 60 includes at least one touch reference electrode 600, and touch reference electrodes 600 are arranged between the touch sensing electrode strips adjacently arranged. Or the touch reference electrode set 60 is disposed between the touch driving electrode 51 and the film layer where the touch sensing electrode 52 is located, as shown in fig. 9, and there is an overlapping area between the vertical projection of the touch reference electrode set 60 on the film layer where the touch driving electrode 51 is located and the touch driving electrode 51, or the touch reference electrode set 60 is disposed between the touch driving electrode 51 and the film layer where the touch sensing electrode 52 is located, and there is an overlapping area between the vertical projection of the touch reference electrode set 60 on the film layer where the touch sensing electrode 52 is located and the touch sensing electrode 52.
Fig. 8 schematically illustrates that the touch driving electrode 51 and the touch reference electrode group 60 are arranged in the same layer, and that there are touch reference electrodes 600 arranged between adjacently arranged touch driving electrode bars 550. The mutual capacitance type touch electrode 50 includes a touch driving electrode 51 and a touch sensing electrode 52, the touch driving electrode 51 and the touch sensing electrode 52 are arranged in different layers, the touch reference electrode set 60 and the touch driving electrode 51 are arranged in the same layer, and the touch driving electrode set 60 exists between adjacently arranged touch driving electrode strips 550. By arranging the touch reference electrode group 60 between the touch driving electrode strips 550, the variable capacitance value of the driving electrode strips 550 at the deformation position of the supporting structure 40 can be compensated by the deformation capacitance value of the touch reference electrode group 60, so that the capacitance change of the touch driving electrode strips 550 caused by the deformation of the supporting structure 40 can be compensated, the occurrence of touch false alarm of the touch electrode 50 can be avoided, and the touch detection sensitivity of the touch electrode can be further improved. The touch reference electrode set 60 and the touch driving electrode 51 are arranged on the same layer, so that the overall thickness of the touch display device can be reduced, and the preparation of the film layers of the touch driving electrode set 51 and the touch reference electrode set 60 can be completed only by one process of arranging the touch reference electrode set 60 and the touch driving electrode 51 on the same layer, so that only one etching process is needed in the manufacturing process, separate mask manufacturing is not needed, the cost is saved, the manufacturing process is reduced, the production efficiency is improved, and the process complexity is reduced.
It should be noted that, the touch display panel provided in the embodiment of the present invention may include a plurality of groups of touch reference electrode groups 60, the number of the touch reference electrode groups 60 is not limited in the embodiment of the present invention, and fig. 8 and fig. 9 only illustrate four groups of touch reference electrode groups 61, 62, 63 and 64 as examples, and the touch reference electrodes corresponding to the touch reference electrode groups 61, 62, 63 and 64 are 610, 620, 630 and 640.
Further, the touch sensing electrode 52 and the touch reference electrode set 60 may be arranged on the same layer, and the touch reference electrode 600 is arranged between the adjacent touch sensing electrode strips, and the compensation principle is similar to that of the touch driving electrode 51.
Fig. 9 illustrates an exemplary arrangement of different layers of the touch driving electrode 51 and the touch reference electrode set 60, where an overlapping area exists between a vertical projection of the touch reference electrode set 60 on a film layer where the touch driving electrode 51 is located and the touch driving electrode 51, and fig. 10 is a schematic cross-sectional structure of the touch display panel provided in fig. 9 along a section line D-D', as shown in fig. 9 and fig. 10, where the touch reference electrode set 60 is arranged between the touch driving electrode 51 and the film layer where the touch sensing electrode 52 is located, and where an overlapping area exists between a vertical projection of the touch reference electrode set 60 on the film layer where the touch driving electrode 51 is located and the touch driving electrode 51.
It should be noted that, fig. 10 is an exemplary schematic diagram showing a cross-sectional structure of the touch display panel provided in fig. 9 along a section line D-D', wherein insulating layers 70 are disposed between the touch driving electrode 51 and the touch reference electrode 60, and between the touch reference electrode set 60 and the touch sensing electrode 52, so as to ensure that the touch driving electrode 51 and the touch reference electrode 60 are insulated from each other, and the touch reference electrode set 60 and the touch sensing electrode 52 are insulated from each other.
When the touch driving electrode 51 and the touch reference electrode set 60 are arranged in different layers, only the overlapping area between the vertical projection of the touch reference electrode set 60 on the film layer where the touch driving electrode 51 is located and the touch driving electrode 51 is ensured, and the deformation of the supporting structure 40 is ensured, wherein the touch reference electrode set 60 and the touch driving electrode set 51 have the same or similar capacitance change rate. Therefore, the position of the touch reference electrode set 60 is less affected by the position of the touch driving electrode 51, and the layout of the film layers of the touch reference electrode set 60 has greater flexibility.
It should be noted that, when the touch reference electrode set 60 is disposed between the film layers between the touch driving electrode 51 and the touch sensing electrode 52, the projection of the touch reference electrode set 60 on the film layer where the touch driving electrode 51 is located should have an overlapping area with the touch driving electrode 51, so as to ensure that when the supporting structure 40 is deformed, the deformation capacitance value of the touch reference electrode set 60 compensates the capacitance value of the touch electrode 50 at the deformation position of the supporting structure 40, compensate the capacitance change of the touch electrode 50 caused by the deformation of the supporting structure 40, avoid the occurrence of false alarm points of touch control of the touch electrode, and improve the touch detection sensitivity of the touch electrode.
Further, the touch reference electrode set 60 may also be disposed between the touch driving electrode 51 and the film layer where the touch sensing electrode 52 is located, and the vertical projection of the touch reference electrode set 60 on the film layer where the touch sensing electrode 52 is located and the touch sensing electrode 52 have an overlapping area, and the compensation principle is similar to that of the touch driving electrode 51.
In summary, in the touch display panel provided by the embodiment of the invention, when the touch driving electrode and the touch sensing electrode of the mutual capacitance type touch display panel are arranged in different layers, the touch reference electrode group is arranged between electrode strips of the touch driving electrode or the touch sensing electrode, or the touch reference electrode is arranged on a film layer between the touch driving electrode and the touch sensing electrode, and the projection of the touch reference electrode on the touch driving electrode film layer or the touch sensing electrode film layer is overlapped with the touch driving electrode or the touch sensing electrode, so that when the supporting structure is deformed, the capacitance value of the touch electrode change at the deformation position of the supporting structure can be compensated by the deformation capacitance value of the touch reference electrode group, the capacitance change of the touch electrode caused by the deformation of the supporting structure is compensated, the touch error reporting point of the touch electrode is avoided, and the touch detection sensitivity of the touch electrode is improved.
Optionally, fig. 11 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention, as shown in fig. 11, the touch electrode 50 includes a plurality of touch areas, each touch electrode block 510 in fig. 11 can be understood as a touch area, at least one group of touch reference electrode groups 60 includes a plurality of groups of touch reference electrode groups, and the touch reference electrode groups 60 are in one-to-one correspondence with the touch areas.
By way of example, by setting the touch reference electrode groups 60 to correspond to the touch areas one by one, so based on the deformation of the supporting structure 40, each touch reference electrode group 60 can correspond to an independent capacitance change rate and capacitance change amount, and perform accurate compensation on the touch electrode 50 in each touch area based on the capacitance change rate and the capacitance change amount, so as to ensure that the touch electrode 50 obtains accurate capacitance compensation due to the deformation of the supporting structure 40, and ensure that the touch electrode 50 obtaining accurate capacitance compensation has accurate touch detection precision.
It should be noted that fig. 11 exemplarily shows that each touch electrode block 510 is a touch area, and a set of touch reference electrode groups 60 are disposed in each touch area. The touch area may be composed of two or more touch electrode blocks 510, and at least one touch reference electrode group 60 is disposed in the touch area, and the number of the touch electrode blocks 510 in the touch area is not limited in the present invention.
Optionally, with continued reference to fig. 11, the plurality of touch reference electrode sets 60 are uniformly distributed in the area where the touch electrodes 50 are located.
By uniformly distributing the plurality of groups of touch reference electrode groups 60 in the area where the touch electrode 50 is located, it is ensured that after the support structure 40 is deformed, compensation parameter values can be calculated by the capacitance change parameters of the touch electrode 50 at the position where the deformation occurs and the capacitance change parameters of the touch reference electrode groups 60 which are uniformly distributed and exist at the position corresponding to the deformation, and further, the capacitance of the touch electrode 50 is compensated, and the accuracy of calculating the compensation parameters can be improved by uniformly distributing the plurality of groups of touch reference electrode groups 60.
It should be noted that, fig. 11 exemplarily illustrates that the touch electrode blocks 510 of the partial touch electrode 50 are connected to the driving IC 70 through the touch signal trace 500, it is understood that each touch electrode block 510 is connected to the driving IC 70 through the touch signal trace 500, and the touch reference signal trace 650 of the partial touch reference electrode group 60 is connected to the driving IC 70 through the touch reference signal trace 650, and it is understood that each touch reference electrode group 60 is connected to the driving IC 70.
On the basis of the above embodiment, fig. 12 is a schematic structural diagram of another touch display panel according to the present invention, as shown in fig. 12, the touch electrode 50 includes a grid-shaped metal wire 80, and after the support structure 40 is deformed, it is ensured that after the touch electrode 50 is deformed, the compensation parameter value can be calculated by the capacitance change parameter of the touch electrode 50 at the position where the deformation occurs and the capacitance change parameter of the touch reference electrode 60 distributed uniformly at the position where the deformation occurs, so as to compensate the capacitance of the touch electrode 50, and the accuracy of calculating the compensation parameter can be improved by uniformly distributing the plurality of groups of touch reference electrode groups 60.
It should be noted that fig. 12 exemplarily shows that the touch driving electrode 51 and the touch sensing electrode 52 are disposed on the same layer, and the touch electrode 50 includes a grid-shaped metal wire. The touch electrode 50 includes a grid-shaped metal wire and can be applied to any of the above embodiments of the present application.
Optionally, with continued reference to fig. 4, the touch display panel may further include a driving circuit layer (not shown) and an organic light emitting structure (not shown) disposed between the first substrate 10 and the first electrode 30, and the first electrode 30 is a cathode electrode of the organic light emitting structure.
For example, the organic light emitting structure may include an anode layer, a cathode layer, and a light emitting material layer disposed between the anode layer and the cathode layer, and carriers in the light emitting material layer migrate under the driving of an electric field by applying electricity between the anode electrode and the cathode electrode, i.e., the first electrode 30, of the organic light emitting structure, thereby exciting the light emitting material layer to emit light.
On the basis of the above embodiments, the embodiment of the present application further provides a touch compensation method for a touch display panel, which is used for performing touch compensation on the touch display panel of any one of the above embodiments, as shown in fig. 13, and the touch compensation method for a touch display panel provided by the embodiment of the present application includes the following steps:
S100, respectively obtaining a first capacitance change parameter of the touch electrode and a second capacitance change parameter of the touch reference electrode group.
When the support structure is not deformed, an initial capacitance value C1 of a first capacitor of the touch electrode and an initial capacitance value C2 of a second capacitor of the touch reference electrode are taken, and when the support structure is deformed, a deformation capacitance value C2 of the first capacitor of the touch electrode and a deformation capacitance value C4 of the second capacitor of the touch reference electrode are obtained. The method comprises the steps of obtaining the change parameters of a first capacitance of a touch electrode according to an initial capacitance C1 and a deformation capacitance C2 of the first electrode of the touch electrode, and obtaining the change parameters of a second capacitance of the touch reference electrode according to an initial capacitance C3 and a deformation capacitance C4 of a second electrode of the touch reference electrode.
And S200, determining compensation parameters of the touch electrode according to the first capacitance change parameters and the second capacitance change parameters.
When the support structure is deformed, the capacitance compensation parameter Δc of the touch electrode 50 satisfies
Wherein K is a compensation coefficient, K is a constant, and N is the number of touch electrodes corresponding to each touch reference electrode group.
The value of the compensation coefficient K is related to the number, thickness and material of other layers between the layer where the touch electrode is located and the layer where the support structure is located, and is also related to touch accuracy setting. C (C) 4 -C 3 To change the capacitance of the touch reference electrode set 60 when the support structure 40 is deformed,for the capacitance change rate of the touch electrode 50 at the deformed position after the deformation of the supporting structure 40, wherein +.>The capacitance change of all the touch electrodes 50 in the touch reference electrode set 60 where the touch electrodes 50 are located at the deformation position of the support structure 40 is determined. By calculating the capacitance change rate of the touch electrode 50 and the capacitance change amount of the touch reference electrode set 60, the capacitance compensation parameter DeltaC of the touch electrode 50 is solved according to the ratio of the capacitance change rate and the capacitance change amount of the touch reference electrode set 60.
And S300, performing capacitance compensation on the touch electrode according to the compensation parameter.
And solving the parameter value delta C of the compensation capacitance of the touch electrode, and reducing the false touch phenomenon caused by falling of the touch display device by performing capacitance compensation on the touch electrode.
According to the technical scheme, the first capacitance change parameter of the touch electrode and the second capacitance change parameter of the touch reference electrode group are respectively obtained, the compensation parameter of the touch electrode is determined according to the first capacitance change parameter and the second capacitance change parameter, and the touch electrode is compensated according to the compensation parameter. When the touch display panel is deformed, the capacitance change on the touch electrode is compensated through the second capacitance change parameter on the touch reference electrode, so that the phenomenon that the touch electrode is wrongly reported due to the capacitance change after the touch display panel is deformed is avoided, the touch detection accuracy of the touch display panel is improved, and the occurrence of touch misreporting is avoided.
Optionally, the touch electrode provided by the embodiment of the present invention may be a self-capacitance touch electrode, and correspondingly, performing capacitance compensation on the touch electrode according to compensation parameters may include: and performing capacitance compensation on the self-capacitance type touch electrode according to the compensation parameter.
Further, the touch electrode provided by the embodiment of the invention can be a mutual capacitance type touch electrode, and the mutual capacitance type touch electrode comprises a touch driving electrode and a touch sensing electrode; correspondingly, performing capacitance compensation on the touch electrode according to the compensation parameter may include: and performing capacitance compensation on the touch driving electrode according to the compensation parameter or performing capacitance compensation on the touch sensing electrode according to the compensation parameter.
The touch compensation method provided by the embodiment of the invention is simultaneously applicable to the self-capacitance type touch electrode and the mutual capacitance type touch electrode, and the compensation principle is the same and is not repeated here.
On the basis of the foregoing embodiments, fig. 14 is a schematic structural diagram of a touch display device according to an embodiment of the present invention, and referring to fig. 14, the touch display device may include the touch display panel 11 according to any embodiment of the present invention. It should be noted that, the touch display device provided in the embodiment of the present invention may be other circuits and devices for supporting the normal operation of the touch display device, and may also be a computer, a television, an intelligent wearable display device, etc., which is not limited in particular.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements, combinations, and substitutions can be made by those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (15)
1. The touch display panel is characterized by comprising a first substrate and a second substrate, wherein a first electrode and a plurality of supporting structures are formed on one side of the first substrate facing the second substrate, and a touch electrode and at least one group of touch reference electrode groups are formed on one side of the second substrate facing the first substrate;
the touch electrode and the touch reference electrode group are positioned on the same side of the supporting structure; the touch control electrode is input with a touch control signal, the touch control reference electrode group is input with a touch control reference signal, and the touch control signal is the same as the touch control reference signal;
Each touch reference electrode group corresponds to at least one touch electrode;
in the touch electrodes corresponding to each group of the touch reference electrode groups, the initial capacitance value of the ith touch electrode is a first capacitance C 1i When the support structure is deformed, the deformation capacitance value of the ith touch electrode is a second capacitance C 2i The method comprises the steps of carrying out a first treatment on the surface of the i is more than or equal to 1 and is an integer;
the initial capacitance of the touch reference electrode is a third capacitance C 3 When the support structure is deformed, the deformed capacitance value of the touch reference electrode is a fourth capacitance C 4 ；
When the supporting structure is deformed, the capacitance compensation parameter DeltaC of the touch electrode meets the following conditions
Wherein K is a compensation coefficient, K is a constant, and N is the number of touch electrodes corresponding to each touch reference electrode group.
2. The touch display panel of claim 1, wherein the touch electrode and the touch reference electrode set are arranged in the same layer.
3. The touch display panel of claim 2, wherein the touch electrode comprises a self-contained touch electrode comprising a plurality of first touch electrode blocks;
each touch reference electrode group comprises at least one touch reference electrode, and the touch reference electrodes are arranged between two adjacent first touch electrode blocks.
4. The touch display panel according to claim 3, wherein each of the touch reference electrode groups comprises a plurality of touch reference electrodes electrically connected to each other, and the touch reference electrodes are disposed between any two adjacent first touch electrode blocks.
5. The touch display panel of claim 2, wherein the touch electrode comprises a mutual capacitance type touch electrode, the mutual capacitance type touch electrode comprises a touch driving electrode and a touch sensing electrode, and the touch driving electrode and the touch sensing electrode are arranged on the same layer;
the touch control driving electrode comprises a plurality of second touch control electrode blocks, two adjacent second touch control electrode blocks are electrically connected through a first connecting bridge, and the first connecting bridge and the second touch control electrode blocks are arranged on the same layer; the touch sensing electrode comprises a plurality of third touch electrode blocks, two adjacent third touch electrode blocks are electrically connected through a second connecting bridge, and the second connecting bridge is arranged in a different layer from the third touch electrode blocks;
each group of touch reference electrode groups comprises at least one touch reference electrode, wherein the touch reference electrodes are arranged between second touch electrode blocks which are adjacently arranged, or the touch reference electrodes are arranged between third touch electrode blocks which are adjacently arranged.
6. The touch display panel according to claim 5, wherein each of the touch reference electrode groups includes a plurality of touch reference electrodes electrically connected to each other, the touch reference electrodes being disposed between any adjacent second touch electrode blocks, or the touch reference electrodes being disposed between any adjacent third touch electrode blocks.
7. The touch display panel of claim 1, wherein the touch electrode comprises a mutual capacitance type touch electrode, the mutual capacitance type touch electrode comprises a touch driving electrode and a touch sensing electrode, and the touch driving electrode and the touch sensing electrode are arranged in different layers;
the touch driving electrode and the touch reference electrode group are arranged on the same layer; the touch control driving electrode comprises a plurality of touch control driving electrode strips, each touch control reference electrode group comprises at least one touch control reference electrode, and the touch control reference electrodes are arranged between the adjacent touch control driving electrode strips;
or the touch sensing electrode and the touch reference electrode group are arranged on the same layer; the touch sensing electrode comprises a plurality of touch sensing electrode strips, each touch reference electrode group comprises at least one touch reference electrode, and the touch reference electrodes are arranged between the touch sensing electrode strips which are adjacently arranged;
Or the touch reference electrode group is arranged between the touch driving electrode and the film layer where the touch sensing electrode is located, and the vertical projection of the touch reference electrode group on the film layer where the touch driving electrode is located has an overlapping area with the touch driving electrode;
or the touch reference electrode group is arranged between the touch driving electrode and the film layer where the touch sensing electrode is located, and the vertical projection of the touch reference electrode group on the film layer where the touch sensing electrode is located and the touch sensing electrode have an overlapping area.
8. The touch display panel of any one of claims 1-7, wherein the touch electrodes comprise a plurality of touch areas, at least one set of touch reference electrode sets comprises a plurality of sets of touch reference electrode sets, and the touch reference electrode sets are in one-to-one correspondence with the touch areas.
9. The touch display panel of claim 8, wherein the plurality of groups of touch reference electrodes are uniformly distributed in the area where the touch electrodes are located.
10. The touch display panel of any one of claims 1-7, further comprising a touch signal trace and a touch reference signal trace;
The touch signal wire is electrically connected with the touch electrode, and the touch reference signal wire is electrically connected with the touch reference electrode group;
the touch signal wiring and the touch reference signal wiring are arranged on the same layer.
11. The touch display panel according to any one of claims 1 to 7, further comprising a driving circuit layer and an organic light emitting structure disposed between the first substrate and the first electrode;
the first electrode is a cathode electrode of the organic light emitting structure.
12. A touch compensation method for a touch display panel, configured to perform touch compensation on the touch display panel according to any one of claims 1 to 11, comprising:
respectively acquiring a first capacitance change parameter of the touch electrode and a second capacitance change parameter of the touch reference electrode group;
determining compensation parameters of the touch electrode according to the first capacitance change parameters and the second capacitance change parameters;
and carrying out capacitance compensation on the touch electrode according to the compensation parameter.
13. The touch compensation method of claim 12, wherein the touch electrode comprises a self-contained touch electrode;
Performing capacitance compensation on the touch electrode according to the compensation parameter, including:
and carrying out capacitance compensation on the self-capacitance type touch electrode according to the compensation parameter.
14. The touch compensation method of claim 12, wherein the touch electrode comprises a mutual capacitance touch electrode comprising a touch driving electrode and a touch sensing electrode;
performing capacitance compensation on the touch electrode according to the compensation parameter, including:
and performing capacitance compensation on the touch control driving electrode according to the compensation parameter, or performing capacitance compensation on the touch control sensing electrode according to the compensation parameter.
15. A touch display device comprising the touch display panel of any one of claims 1-11.
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| CN206162461U (en) * | 2016-10-26 | 2017-05-10 | 厦门天马微电子有限公司 | Display panel and display device |
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