CN106681578A - Touch panel, touch detection device and touch detection method - Google Patents
Touch panel, touch detection device and touch detection method Download PDFInfo
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- CN106681578A CN106681578A CN201611195746.8A CN201611195746A CN106681578A CN 106681578 A CN106681578 A CN 106681578A CN 201611195746 A CN201611195746 A CN 201611195746A CN 106681578 A CN106681578 A CN 106681578A
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- touch
- pressure
- point
- touch panel
- touch point
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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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)
Abstract
The invention discloses a touch panel. The touch panel comprises a substrate, electrodes and transparent piezoelectric dielectric layers, wherein the electrodes are arranged on the substrate and form touch points; the transparent piezoelectric dielectric layers are reused as the adjacent dielectric layers of the electrodes. The invention also provides a touch detection device comprising the touch panel and a touch detection method. The transparent piezoelectric dielectric layers are reused as the adjacent dielectric layers of the electrodes, a new lamination layer does not need to be introduced into the touch panel, the function of touch pressure detection can be provided while the touch panel and even a whole touch screen are kept small in thickness, and three-dimensional touch operation can be achieved in a simple-and-efficient mode.
Description
Technical field
It relates to technical field of touch control, and in particular to touch panel, touch detecting apparatus and touch detecting method.
Background technology
Traditional touch detection technical adopts capacitance touch detection scheme, can be based on the change of electric capacity on touch panel
To detect the information related to touch location, so as to carry out two dimension touch control operation, for example by the click in plane, slip,
Scaling etc. is controlling various operations.Development and requirements at the higher level of the user to touch experience with science and technology, some touch detection skills
Art also detects touch pressure, based on touch location and the group of touch pressure in addition to detecting the information relevant with touch location
Close to carry out touch control operation, so as to carry out the touch control operation of three-dimensional.Mode more universal at present is filled in conventional touch detection
New pressure touch layer is added on the basis put, although the method can effectively measure the size of touch screen surface pressure,
But the new lamination for adding increases the thickness of touch screen, it is unfavorable for that the later stage is integrated with integrated development.
The content of the invention
In view of this, present disclose provides a kind of touch panel, touch detecting apparatus and touch detecting method, saturating by inciting somebody to action
Bright piezoelectric dielectric layer is multiplexed with the adjacent dielectric of electrode, it is not necessary to new layer is introduced in touch panel, such that it is able to keep
The thickness of the even whole touch screen of touch panel is less while the function of offer touch pressure detection, contributes to simple high
The mode of effect realizes that three-dimensional touch is operated.
According to the one side of the disclosure, there is provided a kind of touch panel, including：Substrate；Electrode, is arranged on the substrate
And form touch point；And transparent piezoelectric dielectric layer, it is multiplexed with the adjacent dielectric of the electrode.
In certain embodiments, the electrode includes drive electrode and sensing electrode, the drive electrode and the sensing
Electrode is located in different layers, and the drive electrode and the sensing electrode are extended in different directions to form touch point,
The transparent piezoelectric dielectric layer is arranged between drive electrode layer and sensing electrode layer.
In certain embodiments, the transparent piezoelectric dielectric layer is arranged between drive electrode layer and sensing electrode layer and institute
State the corresponding position of drive electrode and/or the sensing electrode.
In certain embodiments, the transparent piezoelectric dielectric layer is arranged between drive electrode layer and sensing electrode layer with touching
Touch a little corresponding position.
In certain embodiments, the transparent piezoelectric dielectric layer is arranged to be located at the drive electrode layer and sensing electrode layer
Between pantostrat.
In certain embodiments, the electrode includes sensing electrode, and the transparent piezoelectric dielectric layer is arranged on the sensing
Between electrode and the substrate.
In certain embodiments, the material of the transparent piezoelectric dielectric layer includes transparent piezoelectric ceramics.
In certain embodiments, the touch panel also includes：The adhesive layer that is arranged on electrode and it is arranged on bonding
Protective cover on layer.
According to another aspect of the present disclosure, there is provided a kind of touch detecting apparatus, including：Touch surface as described above
Plate；And control unit, the position that described control unit carries out touch detection to obtain and touch for controlling touch panel has
The information of pass and the information relevant with the pressure for touching, the touch for occurring to touch is determined according to the information relevant with the position for touching
Point, and according to the information relevant with the pressure for touching come the variation tendency of the pressure at the touch point for determining generation touch.
In certain embodiments, described control unit includes：Contact control module, is touched for controlling touch panel
Detect to obtain the sense capacitance distribution curve at touch point；Touch detection module, for the sense capacitance at touch point point
When Sudden change region occurs in cloth curve, judge touch event at the touch point；Pressure detecting module, for occurring to touch thing
When three extreme points occurs in capacitance profile curve at the touch point of part, judge occur to touch if three extreme points rise simultaneously
The pressure at the touch point of event is touched in increase, the touch point that touch event occurs is judged if three extreme points decline simultaneously
The pressure at place is reducing.
Preferably, the capacitance profile curve that the pressure detecting module is used at the touch point that touch event occurs occurs
Three extreme points and when middle extreme point exceedes predetermined threshold value less than both sides extreme point, the change for determining three extreme points becomes
Gesture, judges that the pressure occurred at the touch point of touch event is increasing, if three poles if three extreme points rise simultaneously
Value point declines the pressure for then judging occur at the touch point of touch event and is reducing simultaneously.
According to the another aspect of the disclosure, there is provided a kind of touch detecting method using touch panel described above,
Including：Control the relevant information in position that the touch panel carries out touch detection to obtain with touch and have with the pressure for touching
The information of pass；The touch point for occurring to touch is determined according to the information relevant with the position for touching；And according to the pressure with touch
Relevant information is come the variation tendency of the pressure at the touch point for determining generation touch.
In certain embodiments, the information relevant with position that is touching and the information relevant with the pressure for touching include
Sense capacitance distribution curve at touch point；The basis information relevant with the position for touching determines the touch point for occurring to touch
Including：When Sudden change region occurs in sense capacitance distribution curve at touch point, judge touch event at the touch point；And
And described include come the variation tendency for determining the pressure at the touch point for occurring to touch according to the relevant information of pressure for touching：
It is determined that whether the capacitance profile curve occurred at the touch point of touch event there are three extreme points, if it is, determining three
The variation tendency of extreme point, judges that the pressure occurred at the touch point of touch event is increasing if three extreme points rise simultaneously
Greatly, judge that the pressure occurred at the touch point of touch event is reducing if three extreme points decline simultaneously.
Preferably, it is described according to the relevant information of pressure for touching determining the pressure at the touch point for occurring to touch
Variation tendency includes：It is determined that occur touch event touch point at capacitance profile curve whether occur three extreme points and in
Between extreme point less than both sides extreme point exceed predetermined threshold value, if it is, determine three extreme points variation tendency, if three
Individual extreme point rises the pressure for then judging occur at the touch point of touch event and is increasing simultaneously, if three extreme points are with present
Drop then judges that the pressure occurred at the touch point of touch event is reducing.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the embodiment of the present disclosure, simple Jie will be made to the accompanying drawing of embodiment below
Continue, it should be apparent that, the accompanying drawing in explained below only relates to some embodiments of the present disclosure, rather than restriction of this disclosure.
Fig. 1 a show the schematic section of the touch panel according to the embodiment of the present disclosure.
Fig. 1 b show the example top view of the touch panel of Fig. 1 a.
Fig. 2 a show the schematic section of the touch panel according to the embodiment of the present disclosure.
Fig. 2 b show the diagrammatic top view of the touch panel of Fig. 2 a.
Fig. 3 a show the schematic section of the touch panel according to the embodiment of the present disclosure.
Fig. 3 b show the diagrammatic top view of the touch panel of Fig. 3 a.
Fig. 4 a show the schematic section of the touch panel according to the embodiment of the present disclosure.
Fig. 4 b show the diagrammatic top view of the touch panel of Fig. 4 a.
Fig. 5 a show the schematic section of the touch panel according to the embodiment of the present disclosure.
Fig. 5 b show the diagrammatic top view of the touch panel of Fig. 5 a.
Fig. 6 shows the schematic block diagram of the touch detecting apparatus according to the embodiment of the present disclosure.
Fig. 7 shows the schematic block diagram of the control unit in the touch detecting apparatus according to the embodiment of the present disclosure.
Fig. 8 a show the capacitance profile curve that touch panel with piezoelectric dielectric layer is not formed when by touching
Schematic diagram.
Fig. 8 b show what the transparent piezoelectric medium of the touch panel according to the embodiment of the present disclosure was formed when being under pressure
The schematic diagram of capacitance profile curve.
Fig. 8 c show and divided in the electric capacity by there is pressure to be formed when being touched according to the touch panel of the embodiment of the present disclosure
The schematic diagram of cloth curve.
Fig. 9 shows the flow chart of the touch detecting method according to the embodiment of the present disclosure.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present disclosure clearer, below in conjunction with the embodiment of the present disclosure
Accompanying drawing, clear, complete description is carried out to the technical scheme of the embodiment of the present disclosure.Obviously described embodiment is the disclosure
A part of embodiment, rather than the embodiment of whole.Based on described embodiment of the disclosure, ordinary skill people
The every other embodiment that member is obtained on the premise of without the need for creative work, belongs to the scope of disclosure protection.
Present disclose provides a kind of touch panel, touch detecting apparatus and touch detecting method, by touch panel
Transparent piezoelectric dielectric layer is multiplexed with into the adjacent dielectric of electrode, it is not necessary to new layer is introduced in touch panel, so as to keep
The thickness of the even whole touch screen of touch panel is less simultaneously, not only can realize the detection of touch location, and can be with
Know the variation tendency of touch pressure, for the pressure touch of definite pressure value is not needed, can simply and efficiently realize
Three-dimensional touch.
Embodiment of the disclosure goes for mutual capacitance touch detection or self-capacitance touch detection.Below with reference to Fig. 1 extremely
Fig. 3 describing the topology example of the touch panel detected based on mutual capacitance touch according to the embodiment of the present disclosure, with reference to Fig. 4 and Tu
5 describing the example of the structure of the touch panel based on self-capacitance touch detection according to the embodiment of the present disclosure.
Fig. 1 a show the schematic section of the touch panel 100 according to the embodiment of the present disclosure, and Fig. 1 b show Fig. 1 a's
The example top view of touch panel 100.
As shown in figure 1, touch panel 100 includes substrate 101, sensing electrode 102, transparent piezoelectric dielectric layer 103, driving electricity
Pole 104, adhesive layer 105 and protective cover 106.
Substrate 101 can be glass substrate.Sensing electrode 102 is arranged on the substrate 101.Sensing electrode 102 and driving electricity
Pole 104 extends in different directions, and sensing electrode 102 is located in different layers and extends in different directions from drive electrode 104,
For example extend along direction perpendicular to one another so that a touch is formed between each sensing electrode 102 and each drive electrode 104
Point, at the touch point, mutual capacitance between sensing electrode 102 and drive electrode 104 can be changed due to touch, can be with
The generation of touch event is detected according to this change.
Transparent piezoelectric dielectric layer 103 is located at the drive that the sensing electrode layer at the place of sensing electrode 102 is located with drive electrode 104
Between moving electrode layer.In the present embodiment, as shown in Figure 1 b, transparent piezoelectric can be arranged in the lower surface of drive electrode 104 to be situated between
Matter layer 103.The material of transparent piezoelectric dielectric layer 103 can include transparent piezoelectric ceramics, such as but not limited to zirconium titanium series dioxy
Change many oxides such as zirconium series crystalline ceramics.Piezoelectric ceramics can polarize as a kind of electrolyte in the presence of electric field
Phenomenon, and upper and lower surface internally produces bound charge.These bound charges can be in the upper outer lower face surface of piezoelectric ceramics medium
One layer of absorption makes whole piezoelectric ceramics medium integrally in neutrality from extraneous electric charge.Put down with polarised direction when applying one
During capable external force, piezoelectric ceramics sector-meeting produces the spacing of constraint charge layer in deformation, piece and diminishes, and makes the free charge mistake on surface
It is surplus to produce electric discharge phenomena.As a result so that the capacitance detected when the capacitance for detecting is less than without pressure, can come accordingly
Weigh the size of pressure.
Adhesive layer 105 is set on drive electrode 104, and protective cover 106 is set on adhesive layer 105, to play protection
Effect.
Because the one side of transparent piezoelectric dielectric layer 103 replaces traditional rigid dielectric ceramics as sensing electrode 102 and drive
Dielectric layer between moving electrode 104, on the other hand serves the effect of sensing touch pressure, so as to avoid additionally increase it is new
Layer comes for pressure-sensing, there is provided thickness is relatively small and possesses the touch panel of pressure sensing capabilities.
Although transparent piezoelectric dielectric layer 103 to be arranged on the lower surface of drive electrode 104 in above example, but this public affairs
The embodiment not limited to this opened, the layout of the transparent piezoelectric dielectric layer 103 between sensing electrode 102 and drive electrode 104,
Shapes and sizes can as needed make change, for example, transparent piezoelectric dielectric layer 103 can be arranged on into correspondence sensing electrode
102 position, the position for being arranged on correspondence touch point, the form for being arranged to pantostrat or or even the cloth that needed with any other
Arranging, the shape of transparent piezoelectric dielectric layer 103 can be arranged accordingly to rectangle, square, circular, oval or very do not advise for office
Then shape, the size of transparent piezoelectric dielectric layer 103 can also be configured as needed.Describe below with reference to Fig. 2 and Fig. 3
The example of some of them modification.
Fig. 2 a show the schematic section of the touch panel 200 according to the embodiment of the present disclosure, and Fig. 2 b show Fig. 2 a's
The example top view of touch panel 200.As shown in figures 2 a and 2b, touch panel 200 and the touch panel above with reference to Fig. 1 descriptions
100 are similar to, and difference is that transparent piezoelectric dielectric layer 103 is arranged between sensing electrode 102 and drive electrode 104 with touch point phase
Corresponding position.Although transparent piezoelectric dielectric layer 103 being shown as into square in Fig. 2 b and size being identical with touch point, but this public affairs
The embodiment not limited to this opened, the shapes and sizes of the corresponding transparent piezoelectric dielectric layer 103 in each touch point can be as needed
To arrange, such as its shape can arrange circular, rectangle, triangle or or even it is irregularly shaped, may be sized to big
In or the part Chong Die with drive electrode 104 less than sensing electrode 102.This separated structure of transparent piezoelectric dielectric layer 103
The electric charge that adjacent touch point surrounding medium surface can be prevented influences each other, so as to improve the accuracy of test.
Fig. 3 a show the schematic section of the touch panel 300 according to the embodiment of the present disclosure, and Fig. 3 b show Fig. 3 a's
The example top view of touch panel 300.As best shown in figures 3 a and 3b, touch panel 300 and touching for describing above with reference to Fig. 1 and Fig. 2
Touch panel 100 similar with 200, difference is that transparent piezoelectric dielectric layer 103 is arranged to be located at sensing electrode 102 and drive electrode
Pantostrat between 104.It is clear in order to illustrate in fig 3b, sensing electrode 102 and drive electrode 104 are used into dotted lines, thoroughly
Bright piezoelectric dielectric layer 103 is arranged to pantostrat, the layer that it is located between layer and drive electrode 104 that sensing electrode 102 is located it
Between.This continuous Rotating fields of transparent piezoelectric dielectric layer 103 implement relatively easy, simplify manufacturing process.Although Fig. 3 is b
It is middle that transparent piezoelectric dielectric layer 103 is shown as into square and size is identical with the touch sensitive areas of whole touch panel, but this
Disclosed embodiment not limited to this, the shapes and sizes of the corresponding transparent piezoelectric dielectric layer 103 in each touch point can be according to need
To arrange, such as its shape can arrange circular, oval, rectangle, triangle or or even it is irregularly shaped, size can be with
It is set greater than or less than the touch sensitive areas of touch panel.
In the touch panel based on mutual capacitance touch detection described above with reference to Fig. 1 to Fig. 3 operationally, it is electric to driving
Pole applies drive signal, and receives sensing signal from sensing electrode, it is hereby achieved that the electric capacity at each touch point, due to this
On the one hand electric capacity change because of touch, is on the other hand affected by the piezoelectric effect of transparent piezoelectric dielectric layer, so can
The position that enough reflections are touched, can reflect the pressure of touch again.
Fig. 4 a show the schematic section of the touch panel 400 according to the embodiment of the present disclosure, and Fig. 4 b show Fig. 4 a's
The example top view of touch panel 400.As shown in fig. 4 a, touch panel 400 include substrate 401, transparent piezoelectric dielectric layer 402,
Sensing electrode 403, adhesive layer 404 and protective cover 405.Substrate 401 can be glass substrate.Sensing electrode 403 is arranged on substrate
Form that is upper and being arranged to array.Transparent piezoelectric dielectric layer 402 is located between substrate 401 and sensing electrode 403.In this enforcement
In example, transparent piezoelectric dielectric layer 402 is arranged on the lower surface of sensing electrode 403, so as to form array as shown in Figure 4 b.It is transparent
The material of piezoelectric dielectric layer 402 can include transparent piezoelectric ceramics, such as but not limited to various oxygen such as zirconium titanium series zirconium dioxide
Compound series crystalline ceramics.Arrange adhesive layer 404 in sensing electrode 403 to arrange and arrange protective cover on adhesive layer 404
405, to play a protective role.
Because the one side of transparent piezoelectric dielectric layer 402 replaces traditional rigid dielectric ceramics as substrate 401 and sensing electricity
Dielectric layer between pole 403, on the other hand serves the effect of sensing touch pressure, and so as to avoid new layer is additionally increased
For pressure-sensing, there is provided thickness is relatively small and possesses the touch panel of pressure sensing capabilities.In addition, transparent piezoelectric medium
The separated structure of layer 402 can prevent the electric charge on adjacent touch point surrounding medium surface to influence each other, so as to improve test
Accuracy.
Although transparent piezoelectric dielectric layer 402 to be arranged on the lower surface of sensing electrode 403 so as to be formed in above example
Array, but embodiment of the disclosure not limited to this.The layout of transparent piezoelectric dielectric layer 402, shapes and sizes can be according to need
Change is made, for example, transparent piezoelectric dielectric layer 402 can be arranged to the form of pantostrat or or even with any other need
The layout wanted arranging, the shape of transparent piezoelectric dielectric layer 402 can be arranged accordingly to rectangle, it is square, circular, oval or
Very irregularly shaped, the size of transparent piezoelectric dielectric layer 402 can also be configured as needed.Retouch below with reference to Fig. 5
State the example of one of modification.
Fig. 5 a show the schematic section of the touch panel 500 according to the embodiment of the present disclosure, and Fig. 5 b show Fig. 5 a's
The example top view of touch panel 500.As shown in figure 5a and 5b, touch panel 500 and the touch panel above with reference to Fig. 4 descriptions
400 are similar to, and difference is the pantostrat that transparent piezoelectric dielectric layer 402 is arranged to be located between substrate 401 and sensing electrode 403.
It is clear in order to illustrate in fig. 4b, the dotted lines of rectangle sensing electrode 403 of array, transparent piezoelectric dielectric layer will be arranged to
402 are arranged to pantostrat, and it is between substrate 401 and sensing electrode 403.This pantostrat of transparent piezoelectric dielectric layer 103
Structure implements relatively easy, simplifies manufacturing process.Although in Fig. 5 b by transparent piezoelectric dielectric layer 402 be shown as it is square and
Size is identical with the touch sensitive areas of whole touch panel, but embodiment of the disclosure not limited to this, each touch point pair
The shapes and sizes of the transparent piezoelectric dielectric layer 103 answered can be arranged as needed, such as its shape can arrange it is circular,
Ellipse, rectangle, triangle or or even it is irregularly shaped, may be sized to the touch-sensing more than or less than touch panel
Region.
In the touch panel based on self-capacitance touch detection described above with reference to Fig. 4 and Fig. 5 operationally, from sensing electricity
Pole receives sensing signal, it is hereby achieved that the electric capacity at each sensing points, because on the one hand the electric capacity become because of touch
Change, on the other hand affected by the piezoelectric effect of transparent piezoelectric dielectric layer, so the position of touch can either be reflected, again can be anti-
Reflect the pressure of touch.
Fig. 6 shows the schematic block diagram of the touch detecting apparatus 600 according to the embodiment of the present disclosure.As shown in fig. 6, touching inspection
Surveying device 600 includes touch panel 601 and control unit 602.Touch panel 601 can be by describing above with reference to Fig. 1 to Fig. 5
Touch panel (such as any one in touch panel 100 to 500) in any embodiment is realizing.Control unit 602 is used for
The relevant information in control touch panel 601 position that carries out touch detection to obtain with touch and the letter relevant with the pressure for touching
Breath, the touch point for occurring to touch is determined according to the information relevant with the position for touching, and according to the letter relevant with the pressure for touching
Cease to determine the variation tendency of the pressure at the touch point for occurring to touch.
Fig. 7 shows the schematic block diagram of control unit 602.As shown in fig. 7, control control unit 602 can include touching
Control module 6021, touch detection module 6022 and pressure detecting module 6023.
Contact control module 6021 is relevant for controlling the position that touch panel 601 carries out touch detection to obtain with touch
Information and with the relevant information of pressure for touching.For example, for mutual capacitance touch detection, contact control module 6021 can
To apply drive signal to the drive electrode of touch panel 601 and receive sensing signal from the sensing electrode of touch panel 601, from
And obtain the sense capacitance distribution curve of each touch point on touch panel 601.For self-capacitance touch detection, control is touched
Molding block 6021 can receive sensing signal from the sensing electrode of touch panel 601, so as to obtain sense capacitance distribution curve.
Fig. 8 a show the capacitance profile curve that touch panel with piezoelectric dielectric layer is not formed when by touching
Schematic diagram.As shown in Figure 8 a, in the case of without piezoelectric dielectric layer, the electric capacity on touch panel at touch point is being touched
When significantly change can occur, be similar to normal distribution from the sense capacitance value of the touch point.In view of distribution curve, occur to touch
The time period touched forms one section of cambered detection zone, and the capacitance in detection zone is apparently higher than the capacitance outside detection zone.Cause
This, would know that whether the distribution curve of the position of touch point has obvious Sudden change region by calculating capacitance.It is described herein
Mutation be not limited to described above significantly increasing, it is also possible to including being obviously reduced, i.e. the Sudden change region of distribution curve can refer to
Be region of uprushing, it is also possible to refer to anticlimax region.
Fig. 8 b show what the transparent piezoelectric medium of the touch panel according to the embodiment of the present disclosure was formed when being under pressure
The schematic diagram of capacitance profile curve.As shown in Figure 8 b, when touch panel is subject to the external force parallel with polarised direction, transparent piezoelectric
Dielectric layer (such as piezoelectric ceramic piece) can produce the spacing of constraint charge layer in deformation, piece and diminish, and make the free charge on surface
Surplus produces electric discharge phenomena, causes electric capacity to reduce, and forms a negative capacitance profile curve.
Fig. 8 c show and divided in the electric capacity by there is pressure to be formed when being touched according to the touch panel of the embodiment of the present disclosure
The schematic diagram of cloth curve.As shown in Figure 8 c, the electric capacity based on Fig. 8 a and Fig. 8 b point of touch detection in accordance with an embodiment of the present disclosure
Cloth it is compound, when not having pressure touch, sense capacitance distribution curve is shown in dotted line, now only one of which extreme point；Going out
During existing pressure touch, as shown by the solid line, now curve has three extreme points for the distribution of capacitance.Three poles can respectively be calculated
The value of value point, when the value of three extreme points increases simultaneously, illustrates that pressure is reducing, when simultaneously the value of three extreme points reduces
When, illustrate pressure value in increase.In actual applications, generally touching can all be accompanied by the generation of pressure, but and not all is tactile
Pressure controlled intention is touched, such as user is sometimes for carrying out two-dimentional touch control operation, it is sometimes desirable to carry out with certain journey
The touch of degree pressure is carrying out three-dimensional touch operation.For this purpose, a threshold value can be set, just think when pressure exceedes the threshold value
User wants to carry out three-dimensional touch operation, controls accordingly so as to be performed according to the variation tendency of pressure, such as volume adjusting,
Power control in game etc..
Touch detection module 6022 and pressure detecting module 6023 can be carried out based on the principle described above with reference to Fig. 8
Operation.
Touch detection module 6022 is used to determine according to the information relevant with the position for touching the touch point for occurring to touch.Example
Such as, can may determine that whether the sense capacitance distribution curve at touch point saltation zone occurs with touch detection module 6022
Domain, if there is Sudden change region in the sense capacitance distribution curve of certain or some touch points, can be determined that it is described certain or certain
There is touch event at a little touch points.
Pressure detecting module 6023 is used to determine the touch point for occurring to touch according to the information relevant with the pressure for touching
The variation tendency of the pressure at place.For example, pressure detecting module 6023 can determine the electric capacity at the touch point that touch event occurs
Whether distribution curve there are three extreme points, if it is, determine the variation tendency of three extreme points, if three extreme points are same
Shi Shangsheng then judges that the pressure occurred at the touch point of touch event is increasing, and judges to send out if three extreme points decline simultaneously
Pressure at the touch point of raw touch event is reducing.Preferably, pressure detecting module 6023 can determine generation touch event
Touch point at capacitance profile curve whether there are three extreme points and middle extreme point exceed less than both sides extreme point it is pre-
Fixed threshold value, i.e. judge whether depression shown in solid in Fig. 8 c is deep enough, if it is, the size for thinking pressure reaches
The level of pressure touch is carried out, so as to judge pressure trend, otherwise it is assumed that the size of pressure is not up to pressed
The level of power touch-control, does not make a decision to the variation tendency of pressure.After the variation tendency for knowing pressure, can perform accordingly
Corresponding control operation, for example, gradually increase volume with the increase of pressure, and volume is gradually lowered with the reduction of pressure
Etc..
The disclosure by transparent piezoelectric dielectric layer is multiplexed with electrode in touch panel adjacent dielectric, it is not necessary to
New layer is introduced in touch panel, keeps the thickness of the even whole touch screen of touch panel less.In addition, the enforcement of the disclosure
Example can know the variation tendency of pressure, the size without accurately knowing pressure based on this touch panel structure.Due to
Most pressure touch depends on the variation tendency of pressure to carry out, and is not required for knowing the occurrence of pressure, so this
Disclosed embodiment can utilize the less touch of thickness compared to traditional pressure touch technology by relatively simple operation
Panel is realizing based on the three-dimensional touch of touch location and touch pressure.
Fig. 9 shows the flow chart of the touch detecting method 900 according to the embodiment of the present disclosure.Touch detecting method 900 can
To be applied to any touch panel described above, such as any one in touch panel 100 to 500.
In step S901, control touch panel carries out touch detection.For example, for mutual capacitance touch detection, can be with
Apply drive signal to the drive electrode of touch panel and receive sensing signal from the sensing electrode of touch panel；For self-capacitance
For touch detection, sensing signal can be received from the sensing electrode of touch panel.
In step S902, based on sensing signal, the sense capacitance distribution curve of each touch point on touch panel is obtained.
In step S903, there is Sudden change region (for example, capacitance in the sense capacitance distribution curve for determining whether touch point
It is higher than other periods within certain time, and the amount being higher by has exceeded predetermined threshold value), if it is, thinking the touch
There is touch event, otherwise execution step S905, execution step S904 at point.For example, based on the original described above with reference to Fig. 8
Reason, if Sudden change region occurs in the sense capacitance distribution curve of certain or some touch points, can be determined that at the touch point
Generation touch event.
In step S904, there is no touch event in judgement.
In step S905, whether the sense capacitance distribution curve for judging the touch point that touch occurs has three extreme points,
Preferably may further determine whether that middle extreme point exceedes predetermined threshold value less than both sides extreme point, i.e. in judging Fig. 8 c
Whether depression shown in solid is deep enough, if it is, the size for thinking pressure has reached the level for carrying out pressure touch, so as to
Execution step S907 is judged pressure trend, otherwise it is assumed that the size of pressure not up to carries out the water of pressure touch
It is flat, execution step S906.
In step S906, there is no pressure touch event in judgement.
In step S907, the variation tendency of three extreme points is determined, if the value of three extreme points increases at the same time, hold
Row step S908, if the value of three extreme points reduces at the same time, execution step S909.
In step S908, judge that pressure increases.
In step S909, judge that pressure reduces.
After step S908 and S909, corresponding control operation can be performed according to the variation tendency of pressure, for example
Gradually increase volume with the increase of pressure, volume etc. is gradually lowered with the reduction of pressure, so as to realize based on tactile
Touch the Three dimensions control of position and touch pressure.
The disclosure is by transparent piezoelectric dielectric layer is multiplexed with electrode in touch panel adjacent dielectric, it is not necessary to touching
Touch and new layer is introduced in panel, keep the thickness of the even whole touch screen of touch panel less.In addition, embodiment of the disclosure
The variation tendency of pressure, the size without accurately knowing pressure can be known based on this touch panel structure.Due to big
Partial pressure touch depends on the variation tendency of pressure to carry out, and is not required for knowing the occurrence of pressure, so this public affairs
The embodiment opened can utilize the less touch surface of thickness compared to traditional pressure touch technology by relatively simple operation
Plate is realizing based on the three-dimensional touch of touch location and touch pressure.
Preferred embodiment of the present disclosure is the foregoing is only, the disclosure is not limited to, for those skilled in the art
For, the disclosure can have various changes and change.All any modification, equivalents made within the spirit and principle of the disclosure
Replace, improve etc., should be included within the protection domain of the disclosure.
Claims (14)
1. a kind of touch panel, including：
Substrate；
Electrode, arranges on the substrate and is formed touch point；And
Transparent piezoelectric dielectric layer, is multiplexed with the adjacent dielectric of the electrode.
2. touch panel according to claim 1, wherein, the electrode includes drive electrode and sensing electrode, the drive
Moving electrode and the sensing electrode are located in different layers, and the drive electrode and the sensing electrode are prolonged along different directions
Stretch to form touch point, the transparent piezoelectric dielectric layer is arranged between drive electrode layer and sensing electrode layer.
3. touch panel according to claim 2, wherein, the transparent piezoelectric dielectric layer is arranged on drive electrode layer with sense
Survey position corresponding with the drive electrode and/or the sensing electrode between electrode layer.
4. touch panel according to claim 2, wherein, the transparent piezoelectric dielectric layer is arranged on drive electrode layer with sense
Survey between electrode layer with the corresponding position in touch point.
5. touch panel according to claim 2, wherein, the transparent piezoelectric dielectric layer is arranged to be located at and described drives electricity
Pantostrat between pole layer and sensing electrode layer.
6. touch panel according to claim 1, wherein, the electrode includes sensing electrode, the transparent piezoelectric medium
Layer is arranged between the sensing electrode and the substrate.
7. touch panel according to claim 1, wherein, the material of the transparent piezoelectric dielectric layer is made pottery including transparent piezoelectric
Porcelain.
8. touch panel according to any one of claim 1 to 7, also includes：The adhesive layer that is arranged on electrode and
The protective cover being arranged on adhesive layer.
9. a kind of touch detecting apparatus, including：
Touch panel according to any one of claim 1 to 8 claim；And
Control unit, described control unit is relevant for controlling the position that touch panel carries out touch detection to obtain with touch
Information and the information relevant with the pressure for touching, the touch point for occurring to touch is determined according to the information relevant with the position for touching,
And according to the information relevant with the pressure for touching come the variation tendency of the pressure at the touch point for determining generation touch.
10. touch detecting apparatus according to claim 9, wherein, described control unit includes：
Contact control module, carries out touch detection to obtain the sense capacitance distribution song at touch point for controlling touch panel
Line；
Touch detection module, when there is Sudden change region for the sense capacitance distribution curve at touch point, judges the touch point
There is touch event in place；
Pressure detecting module, when there are three extreme points for the capacitance profile curve at the touch point that touch event occurs,
Judge that the pressure occurred at the touch point of touch event is increasing if three extreme points rise simultaneously, if three extreme points
Decline the pressure for then judging occur at the touch point of touch event simultaneously reducing.
11. touch detecting apparatus according to claim 9, wherein, the pressure detecting module is used for touch thing
Capacitance profile curve at the touch point of part three extreme points occurs and middle extreme point is less than both sides extreme point more than predetermined
Threshold value when, determine the variation tendency of three extreme points, judge touch event if three extreme points rise simultaneously
Pressure at touch point judges the pressure for occurring at the touch point of touch event in increase if three extreme points decline simultaneously
Reducing.
A kind of 12. touch detecting methods of the touch panel using according to any one of claim 1 to 8 claim,
Including：
Control the relevant information in position that the touch panel carries out touch detection to obtain with touch and have with the pressure for touching
The information of pass；
The touch point for occurring to touch is determined according to the information relevant with the position for touching；And
The variation tendency of the pressure at the touch point for occurring to touch is determined according to the information relevant with the pressure for touching.
13. touch detecting methods according to claim 12, wherein,
The information relevant with position that is touching and the information relevant with the pressure for touching include the sense capacitance at touch point
Distribution curve；
The basis information relevant with the position for touching determines that the touch point for occurring to touch includes：Sensing electricity at touch point
When Sudden change region occurs in appearance distribution curve, judge touch event at the touch point；And
It is described according to the relevant information of pressure for touching determining the variation tendency bag of the pressure at the touch point for occurring to touch
Include：It is determined that whether the capacitance profile curve occurred at the touch point of touch event there are three extreme points, if it is, determining three
The variation tendency of individual extreme point, judges that the pressure occurred at the touch point of touch event exists if three extreme points rise simultaneously
Increase, judges that the pressure occurred at the touch point of touch event is reducing if three extreme points decline simultaneously.
14. touch detecting methods according to claim 13, wherein, the basis and the relevant information of pressure for touching come
It is determined that the variation tendency of the pressure at the touch point of touch occurs including：It is determined that there is the electric capacity point at the touch point of touch event
Cloth curve three extreme points whether occurs and middle extreme point exceedes predetermined threshold value less than both sides extreme point, if it is,
Determine the variation tendency of three extreme points, judge if three extreme points rise simultaneously at the touch point of generation touch event
Pressure judges that the pressure occurred at the touch point of touch event is reducing in increase if three extreme points decline simultaneously.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019154442A1 (en) * | 2018-02-09 | 2019-08-15 | 北京钛方科技有限责任公司 | Dynamic or quasi-dynamic force detection apparatus and method |
| CN111459345A (en) * | 2020-03-18 | 2020-07-28 | 精电(河源)显示技术有限公司 | Touch screen and three-dimensional touch detection method |
| CN112925445A (en) * | 2021-03-05 | 2021-06-08 | 武汉天马微电子有限公司 | Touch module, display device and detection method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102236463A (en) * | 2010-04-23 | 2011-11-09 | 英默森公司 | Transparent piezoelectric combined touch sensor and haptic actuator |
| CN102981678A (en) * | 2006-06-09 | 2013-03-20 | 苹果公司 | Touch screen liquid crystal display |
| CN104281328A (en) * | 2014-10-31 | 2015-01-14 | 合肥鑫晟光电科技有限公司 | Touch screen and display panel |
| CN105589603A (en) * | 2016-02-18 | 2016-05-18 | 厦门天马微电子有限公司 | Touch structure, touch display panel and touch display device |
| CN106066732A (en) * | 2016-05-30 | 2016-11-02 | 京东方科技集团股份有限公司 | Touch screen and touch display unit |
-
2016
- 2016-12-21 CN CN201611195746.8A patent/CN106681578B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102981678A (en) * | 2006-06-09 | 2013-03-20 | 苹果公司 | Touch screen liquid crystal display |
| CN102236463A (en) * | 2010-04-23 | 2011-11-09 | 英默森公司 | Transparent piezoelectric combined touch sensor and haptic actuator |
| CN104281328A (en) * | 2014-10-31 | 2015-01-14 | 合肥鑫晟光电科技有限公司 | Touch screen and display panel |
| CN105589603A (en) * | 2016-02-18 | 2016-05-18 | 厦门天马微电子有限公司 | Touch structure, touch display panel and touch display device |
| CN106066732A (en) * | 2016-05-30 | 2016-11-02 | 京东方科技集团股份有限公司 | Touch screen and touch display unit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019154442A1 (en) * | 2018-02-09 | 2019-08-15 | 北京钛方科技有限责任公司 | Dynamic or quasi-dynamic force detection apparatus and method |
| CN111459345A (en) * | 2020-03-18 | 2020-07-28 | 精电(河源)显示技术有限公司 | Touch screen and three-dimensional touch detection method |
| CN112925445A (en) * | 2021-03-05 | 2021-06-08 | 武汉天马微电子有限公司 | Touch module, display device and detection method |
| CN112925445B (en) * | 2021-03-05 | 2023-03-07 | 武汉天马微电子有限公司 | Touch module, display device and detection method |
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| Publication number | Publication date |
|---|---|
| CN106681578B (en) | 2020-02-07 |
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