CN108762555A - Touch base plate and touch device - Google Patents
Touch base plate and touch device Download PDFInfo
- Publication number
- CN108762555A CN108762555A CN201810489155.4A CN201810489155A CN108762555A CN 108762555 A CN108762555 A CN 108762555A CN 201810489155 A CN201810489155 A CN 201810489155A CN 108762555 A CN108762555 A CN 108762555A
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- Prior art keywords
- electrode
- base plate
- touch
- electrodes
- touch base
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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
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
The present invention provides a kind of touch base plate, including stretchable substrate, is provided with plurality of first electrodes and the plurality of second electrodes in the stretchable substrate, multiple first electrodes line up multiple lines and multiple rows；Each first electrode is both provided with the second electrode along the both sides of line direction and along the both sides of column direction；It is both provided with dielectric layer between each first electrode second electrode adjacent thereto, the dielectric constant of the dielectric layer increases when the dielectric layer is stretched, reduces when the dielectric layer is squeezed, and the deformation quantity positive correlation of the variable quantity of the dielectric constant and the dielectric layer.Correspondingly, the present invention also provides a kind of touch devices.The present invention can reduce influence of the deformation to touch accuracy of touch base plate, improve the accuracy that position of touch judges.
Description
Technical field
The present invention relates to technical field of touch control, and in particular to a kind of touch base plate and touch device.
Background technology
Mutual capacitance type touch control panel includes multiple driving electrodes and multiple induction electrodes, with the driving electrodes phase each other of a line
Even, the induction electrode of same row is connected with each other, and driving electrodes unit and induction electrode unit adjacent form capacitance.Driving circuit
Drive signal is provided to each row driving electrodes in turn in the form of scanning, corresponding inductive signal is generated on induction electrode.Work as hair
When raw touch-control, the capacitance of touch position changes, so that the inductive signal of the induction electrode of respective column changes,
And then determine touch location.
Currently, driving electrodes and induction electrode are usually located in same layer, still, if this touch-control structure applied
In stretchable touch device, then, when touch device is deformed upon and (e.g., stretched), even if can some drives if touch-control does not occur
The distance between moving electrode and induction electrode increase, and change so as to cause the capacitance of capacitance, and then accidentally make driving circuit
Carry out position of touch judgement；Also, if carrying out touch-control when touch device deforms upon, position of touch judgement can be also influenced
Accuracy.
Invention content
The present invention is directed at least solve one of the technical problems existing in the prior art, it is proposed that a kind of touch base plate and touch
Device is controlled, to reduce influence of the deformation to touch accuracy of touch base plate, to improve the accuracy of position of touch judgement.
To achieve the goals above, the present invention provides a kind of touch base plate, including stretchable substrate, the stretchable substrate
On be provided with plurality of first electrodes and the plurality of second electrodes, multiple first electrodes line up multiple lines and multiple rows；Each first electrode is along row
The both sides in direction and it is both provided with the second electrode along the both sides of column direction；
It is both provided with dielectric layer, the dielectric constant of the dielectric layer between each first electrode second electrode adjacent thereto
Increase when the dielectric layer is stretched, reduce when the dielectric layer is squeezed, and the variable quantity of the dielectric constant
With the deformation quantity positive correlation of the dielectric layer.
Preferably, the material of the dielectric layer includes Kynoar.
Preferably, the stretchable substrate includes multiple island portions and spacer portion that multiple island portions are separated from each other, described
The elasticity modulus of island portion is more than the elasticity modulus of the spacer portion；
At least part first electrode and/or the setting of at least part second electrode are in the island portion, each island portion
There are one first electrode or a second electrodes for upper setting；Dielectric layer between the first electrode and the second electrode is located at
The spacer portion.
Preferably, each first electrode and each second electrode are arranged in the island portion.
Preferably, with each adjacent two first electrode between each adjacent two first electrode in a line and in same row it
Between be both provided at least two second electrodes,
When the stretchable substrate does not deform upon, in the multiple second electrodes adjacent with any one first electrode
In, the first electrode is identical as the distance between each second electrode.
Preferably for any one first electrode and its adjacent multiple second electrodes, each second electrode is towards institute
The edge for stating first electrode is curved edge；And when the stretchable substrate is not stretched, the arc of multiple second electrodes
Shape edge corresponds to the same center of circle, in the position of orthographic projection of the center of circle in the stretchable substrate and the first electrode
The position of orthographic projection of the heart in the stretchable substrate is identical.
Preferably, orthographic projection of the first electrode in the stretchable substrate is round or regular polygon.
Preferably, the first electrode is driving electrodes, and the second electrode is induction electrode.
Preferably, it is sequentially connected with multiple first electrodes in a line, the first electrode insulation gap that do not go together；Alternatively,
Multiple first electrodes in same row are sequentially connected, the first electrode insulation gap of different lines.
Correspondingly, the present invention also provides a kind of touch device, including above-mentioned touch base plate and driving circuit, the driving electricity
Road is used to provide drive signal for a kind of electrode in the first electrode and the second electrode, and detects on another electrode
The signal sensed.
Description of the drawings
Attached drawing is to be used to provide further understanding of the present invention, an and part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the connection diagram of touch base plate and driving circuit provided by the invention；
Fig. 2 is the sectional view of the AA lines along Fig. 1；
When Fig. 3 a are that touch base plate is not stretched, the position of any one first electrode second electrode adjacent thereto is closed
It is schematic diagram；
Fig. 3 b are touch base plates stretched by left and right after, first electrode in the middle part of touch base plate second electrode adjacent thereto
Position relationship schematic diagram；
Fig. 3 c are after touch base plate is stretched by left and right, and the first electrode close to touch base plate left side edge is adjacent thereto
The position relationship schematic diagram of second electrode；
Fig. 4 to fig. 6 is the structural schematic diagram of first electrode of different shapes second electrode adjacent thereto respectively.
Wherein, reference numeral is：
10, stretchable substrate；11, island portion；12, spacer portion；21, first electrode；22, second electrode；23, dielectric layer；30,
Driving circuit.
Specific implementation mode
The specific implementation mode of the present invention is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched
The specific implementation mode stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Fig. 1 is the connection diagram of touch base plate and driving circuit provided by the invention, and Fig. 2 is that AA lines cut open along Fig. 1
View.In conjunction with shown in Fig. 1 and Fig. 2, the touch base plate includes stretchable substrate 10, and multiple are provided in stretchable substrate 10
One electrode 21 and multiple second electrodes 22.Multiple first electrodes 21 line up multiple lines and multiple rows, and each first electrode 21 is along line direction
Both sides and it is both provided with second electrode 22 along the both sides of column direction.Each second electrode 22 adjacent thereto of first electrode 21 it
Between be both provided with dielectric layer 23, the dielectric constant of dielectric layer 23 increases when dielectric layer 23 is stretched, dielectric layer 23 by
Reduce when extruding, and the deformation quantity positive correlation that the variable quantity of dielectric constant is generated with dielectric layer 23 because stretching or squeezing.
It should be understood that first electrode 21 is both provided with 22 table of second electrode along line direction and along the both sides of column direction
Show：There is no other first electrodes 21 between any first electrode 21 and the second electrode of its both sides 22, that is to say, that same to a line
The second electricity is both provided between middle each adjacent two first electrode 21 and in same row between each adjacent two first electrode 21
Pole 22.Wherein, the line direction can be the length direction of touch base plate, and column direction can be the width direction of touch base plate；
Certainly, line direction and column direction may be other directions.
In the present invention, touch control capacitance can be formed between any second electrode 22 adjacent thereto of first electrode 21, touched
Control the capacitance size Cm=ε S/d of capacitance；Wherein, the dielectric of dielectric layers 23 of the ε between first electrode 21 and second electrode 22 is normal
Number, S are the relative area of first electrode 21 and second electrode 22, and d is the distance between first electrode 21 and second electrode 22.When
When the distance between the second electrode 22 that stretchable substrate 10 deforms upon and causes first electrode 21 adjacent thereto increases, due to
The dielectric constant of dielectric layer 23 between first electrode 21 and second electrode 22 is also corresponding to be increased, and increase and dielectric layer 23
Deformation quantity positive correlation, therefore, the capacitance variation of touch control capacitance obtain smaller or unchanged；Equally, when stretchable substrate 10 occurs
When deformation and the distance between second electrode 22 for causing first electrode 21 adjacent thereto reduce, the capacitance variation of touch control capacitance
It is smaller or unchanged；Therefore, when touch base plate deforms and touch-control does not occur, it is possible to reduce accidentally make driving circuit 30 because of deformation
The generation of touch-control judgement is carried out, also, when deformation and touch-control has occurred simultaneously in touch base plate, touch base plate change can also be reduced
The influence that shape judges position of touch, to improve touch accuracy.
Wherein, the material of dielectric layer 23 includes Kynoar (PVDF), and for Kynoar when being stretched, molecule is even
Pole span is orientated, and polarizability becomes larger, so that dielectric constant increases.
The touch base plate of the present invention is specifically introduced with reference to Fig. 1 to Fig. 3 c.
Wherein, one of first electrode 21 and second electrode 22 are driving electrodes, and another one is induction electrode.Specifically
Ground, the present invention regard first electrode 21 as driving electrodes, and it is induction electrode that second electrode 22, which is used as, and with first in a line
Electrode 21 is connected with each other, 21 insulation gap of first electrode that do not go together.When carrying out touch-control, driving circuit 30 is the first electricity line by line
Pole 21 provides drive signal, and detects the inductive signal of the generation of each second electrode 22.When touch-control occurs, the electricity of position of touch
Appearance changes, so that the inductive signal in the second electrode 22 of corresponding position changes, and then according to inductive signal
The position of changed second electrode 22, determines position of touch.It is of course also possible to which the first electrode 21 in same row is connected
Together, 21 insulation gap of first electrode of different lines, correspondingly, when carrying out touch-control, driving circuit 30 is the first electricity by column
Pole 21 provides drive signal.
In addition, same layer setting may be used in first electrode 21 and second electrode 22, two layers of formation can also be divided.
As shown in Fig. 2, stretchable substrate 10 includes multiple island portions 11 and the spacer portion that multiple island portions 11 are separated from each other
12, the elasticity modulus of island portion 11 is more than the elasticity modulus of spacer portion 12, that is, when by same drawing force, between island portion 11 compares
It is less susceptible to deform every portion 12.At least part first electrode 21 and/or at least part second electrode 22 are arranged in island portion
On 11, there are one first electrode 21 or a second electrodes 22 for setting in each island portion 11；First electrode 21 and second electrode 22
Between dielectric layer 23 be located at spacer portion 12, to ensure at least part electrode deformation very little or indeformable when stretching.Its
In, island portion 11 and spacer portion 12 can be located at same layer, can also be located at different layers.
Preferably, each first electrode 21 and each second electrode 22 are arranged in island portion 11, and each island portion 11 is arranged
There are one first electrode 21 or a second electrodes 22, to ensure when touch base plate is stretched, the deformation of each electrode
Equal very little or indeformable, and then electrode is prevented to be damaged.When touch base plate is not stretched, any one 21 He of first electrode
The position relationship of second electrode 22 is as shown in Figure 3a；After touch base plate is stretched by left and right, first electrode 21 and the left and right sides
The distance between second electrode 22 increases, as shown in Figure 3b.Certainly, the feelings of different layers are located at for island portion 11 and spacer portion 12
Condition, when drawing force is unevenly distributed on touch base plate, it is possible to the situation in Fig. 3 c occur, that is, left close to touch base plate
The position of lateral edges, the amount of tension of 11 place layer of island portion is less than the amount of tension of 12 place layer of spacer portion, so that first electrode
The distance between second electrode 22 of the reduction of the distance between 21 and the second electrode 22 on right side, first electrode 21 and left side increases
Greatly.
As shown in Figure 1, at least two second electrodes 22 are provided between each adjacent two first electrode 21 in a line, together
At least two second electrodes 22 are also equipped between each adjacent two first electrode 21 in one row, to which the second more electricity be arranged
The ratio that second electrode 22 is damaged by stretching is reduced, and then improves touch-control sensitivity in pole 22.Wherein, two neighboring first electricity
Second electrode 22 between pole 21 can be spaced setting, can also link together.In the present invention, in a line every adjacent two
It is respectively provided with there are two second electrode 22 between a first electrode 21 and in same row between each adjacent two first electrode 21, this
When, four second electrodes 22 adjacent thereto of each first electrode 21 constitute a touch control unit.As shown in Figure 3a, it is touched when described
Control substrate is not when deforming upon, in the multiple second electrodes 22 adjacent with any one first electrode 21, first electrode 21 with
The distance between each second electrode 22 is identical, so that the capacitance formed between first electrode 21 and each second electrode 22
Size is identical, in order to which driving circuit 30 detects whether that touch-control occurs when touch base plate is not deformed.
Further, in any one touch control unit, the inward flange of each second electrode 22 is (that is, towards first electrode
21 edge) it is curved edge；When the touch base plate is not stretched, the inward flange of multiple second electrodes 22 corresponds to together
One center of circle, the position of orthographic projection of the center of circle in stretchable substrate 10 is with the center of first electrode 21 in stretchable substrate 10
On orthographic projection position it is identical.In addition, the outer edge (that is, away from edge of first electrode 21) of second electrode 22 may be
Curved edge, and the outer edge of second electrode 22 and inward flange correspond to the same center of circle, so that second electrode 22 is formed as cyclic annular knot
A part for structure.
As shown in Figures 4 to 6, orthographic projection of the first electrode 21 in stretchable substrate 10 can be regular quadrangle, positive six
The regular polygons structure such as side shape, octagon.Preferably, as shown in Figure 3a, first electrode 21 in stretchable substrate 10 just
It is projected as circle, so that second electrode 22 and the distance between first electrode 21 are equal everywhere, to ensure first electrode 21
The capacitance size and the distance between two electrodes formed with second electrode 22 is in a linear relationship, and then ensures 21 He of first electrode
When second electrode 22 is relatively close or separate, capacitance variations are smaller or constant.
Correspondingly, the present invention also provides a kind of touch devices, including above-mentioned touch base plate and driving circuit 30.Such as Fig. 1
Shown, driving circuit 30 is electrically connected with first electrode 21 and second electrode 22, for in first electrode 21 and second electrode 22
A kind of electrode on drive signal is provided, and detect and sense on another electrode in first electrode 21 and second electrode 22
Signal.As described above, when first electrode 21 is driving electrodes, second electrode 22 is induction electrode, with the first electrode in a line
When 21 interconnection, driving circuit 30 can provide drive signal to first electrode 21 line by line, and detect each second electrode 22
On inductive signal, to whether being changed according to the inductive signal in each second electrode 22, to judge position of touch.
Wherein, the touch device can also include display panel, to be provided simultaneously with the function of touch-control and display.
It is introduction to touch base plate provided by the invention and touch device above, it can be seen that in the present invention, when can
When elongate substrate deforms upon and the distance between first electrode and second electrode is caused to increase or reduce, the dielectric of dielectric layer is normal
Number can also occur accordingly to increase or reduce, so that the capacitance variation for the capacitance that first electrode and second electrode are formed is smaller
Or it is constant, and then influence of the stretching to touch-control sensitivity because of touch base plate is reduced, improve the touch-control sensitivity of touch device.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, in the essence for not departing from the present invention
In the case of refreshing and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a kind of touch base plate, which is characterized in that including stretchable substrate, multiple first electricity are provided in the stretchable substrate
Pole and multiple second electrodes, multiple first electrodes line up multiple lines and multiple rows；Each first electrode is along the both sides of line direction and along row
The both sides in direction are both provided with the second electrode；
It is both provided with dielectric layer between each first electrode second electrode adjacent thereto, the dielectric constant of the dielectric layer is in institute
It gives an account of and increases when electric layer is stretched, reduces when the dielectric layer is squeezed, and the variable quantity of the dielectric constant and institute
Give an account of the deformation quantity positive correlation of electric layer.
2. touch base plate according to claim 1, which is characterized in that the material of the dielectric layer includes Kynoar.
3. touch base plate according to claim 1, which is characterized in that the stretchable substrate includes multiple island portions and will be more
The spacer portion that a island portion is separated from each other, the elasticity modulus of the island portion are more than the elasticity modulus of the spacer portion；
At least part first electrode and/or the setting of at least part second electrode are set in the island portion, each island portion
First electrode or a second electrode there are one setting；Dielectric layer between the first electrode and the second electrode is located at described
Spacer portion.
4. touch base plate according to claim 3, which is characterized in that each first electrode and each second electrode are respectively provided with
In the island portion.
5. touch base plate according to claim 1, which is characterized in that between each adjacent two first electrode in a line with
And at least two second electrodes are both provided in same row between each adjacent two first electrode,
When the stretchable substrate does not deform upon, in the multiple second electrodes adjacent with any one first electrode, institute
It is identical to state the distance between first electrode and each second electrode.
6. touch base plate according to claim 5, which is characterized in that for any one first electrode and its adjacent more
The edge of a second electrode, each second electrode towards the first electrode is curved edge；And in the stretchable substrate
When not stretched, the curved edge of multiple second electrodes corresponds to the same center of circle, and the center of circle is in the stretchable substrate
The position of orthographic projection is identical as the position of orthographic projection of the center of the first electrode in the stretchable substrate.
7. touch base plate as claimed in any of claims 1 to 6, which is characterized in that the first electrode is described
Orthographic projection in stretchable substrate is round or regular polygon.
8. touch base plate as claimed in any of claims 1 to 6, which is characterized in that the first electrode is driving
Electrode, the second electrode are induction electrode.
9. touch base plate as claimed in any of claims 1 to 6, which is characterized in that with multiple first in a line
Electrode is sequentially connected, the first electrode insulation gap that do not go together；Alternatively, multiple first electrodes in same row are sequentially connected, no
The first electrode insulation gap of same column.
10. a kind of touch device, which is characterized in that including described in any one of claim 1 to 9 touch base plate and driving
Circuit, the driving circuit are used to provide drive signal for a kind of electrode in the first electrode and the second electrode, and
The signal sensed on another electrode of detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810489155.4A CN108762555B (en) | 2018-05-21 | 2018-05-21 | Touch substrate and touch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810489155.4A CN108762555B (en) | 2018-05-21 | 2018-05-21 | Touch substrate and touch device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108762555A true CN108762555A (en) | 2018-11-06 |
| CN108762555B CN108762555B (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810489155.4A Active CN108762555B (en) | 2018-05-21 | 2018-05-21 | Touch substrate and touch device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109976595A (en) * | 2019-03-25 | 2019-07-05 | 合肥京东方光电科技有限公司 | A kind of touch base plate, display panel and display device |
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| CN108762555B (en) | 2021-12-03 |
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