CN105426005B - three-dimensional touch panel - Google Patents
three-dimensional touch panel Download PDFInfo
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- CN105426005B CN105426005B CN201510888561.4A CN201510888561A CN105426005B CN 105426005 B CN105426005 B CN 105426005B CN 201510888561 A CN201510888561 A CN 201510888561A CN 105426005 B CN105426005 B CN 105426005B
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Abstract
The present invention provides a kind of three-dimensional touch panel, including an insulating medium layer and a touch control electrode layer, a pressure sensitivity electrode layer are located at the opposite both sides of insulating medium layer；Wherein touch control electrode layer includes multigroup touch control electrode for insulating and being staggered, to detect the position of a touch signal, pressure sensitivity electrode layer includes that at least one pressure sensitivity electrode is correspondingly arranged at least partly described touch control electrode, to detect the pressing power size of the touch signal, and the touch control electrode being correspondingly arranged with pressure sensitivity electrode is to the pressure sensitivity electrode also to carry out a temperature-compensating, the mode of temperature-compensating includes that Positive and Negative Coefficient Temperature material in series mode, value subtract mode and Wheatstone bridge mode.Three-dimensional touch panel provided by the present invention has many advantages, such as to detect precision height, frivolous.
Description
【Technical field】
The present invention relates to touch-control field more particularly to three-dimensional touch fields.
【Background technology】
Touch panel is widely used in various consumer-elcetronics devices, such as：It is smartphone, tablet computer, mutually mechanical, electrical
The portable electric products such as the philosophical works, MP3 player, or the display screen applied to operational control unit.In recent years, Yi Zhongtong
When with plan-position detecting and pressing dynamics size detecting three-dimensional touch panel have received widespread attention.
Currently used three-dimensional touch panel usually has a touch control electrode layer and the double-deck pressure sensitivity electrode layer.Wherein touch control electrode
Layer is the plan-position for detecting touch signal, usually capacitance touching control electrode, and work is carried out using the electric current induction of human body
Make：Planar two dimensional coordinate system (X, Y) is established in touch area, is provided with the touch-control electricity of x-direction and y-direction in the area
Pole, when finger touches in the touch-control surface corresponding to touch control electrode, due to human body electric field, finger changes at touch point
Electric signal, electronic equipment internal obtain touch point in X-direction and Y by being accurately calculated to electric signal change at touch point
Coordinate position on direction determines the two-dimensional position of touch point and then the display of control electronics, the operations such as redirects.And it is double
It is the pressing power size for detecting touch signal to be laminated sense electrode layer, is usually made using pressure drag material, according to being pressurized
The resistance change of front and back material judges the size of pressing dynamics.
Theoretically, a lamination sense electrode layer can detect the resistance change after being pressurized and judge the big of pressing dynamics
It is small, but pressure drag material environment resistant interference common at present is poor, such as its resistance value can (environment temperature or touch-control be grasped by temperature
Make the temperature of finger) it influences and generates variation, it is not accurate enough so as to cause the detecting of pressing dynamics.The double-deck pressure must thus be used
Sense electrode layer, and temperature-compensating and pressure detection are carried out by Wheatstone bridge.
However the setting of the double-deck pressure sensitivity layer makes the integral thickness of electronic equipment increase, and can influence the sensitive of pressure detecting
Degree, while the development trend of existing lightening electronic equipment is not met, therefore, industry urgently proposes that a kind of new temperature-compensating solves
Scheme, it is thick and heavy present in existing three-dimensional touch panel to overcome the problems, such as.
【Invention content】
To overcome current temperature effect to harmful effect caused by pressing force value detecting, and keep pressure detection not high and three
Tie up the larger problem of touch panel thickness, the present invention, which provides, a kind of providing temperature-compensating and lightening three-dimensional touch panel.
The present invention is in order to solve the above technical problems, provide a technical solution：A kind of three-dimensional touch panel, including：One insulation
Dielectric layer and a touch control electrode layer, a pressure sensitivity electrode layer are located at the opposite both sides of the insulating medium layer；Wherein, described
Touch control electrode layer includes multigroup touch control electrode for insulating and being staggered, to detect the position of a touch signal, the pressure sensitivity electricity
Pole layer includes at least one pressure sensitivity electrode and a plurality of pressure sensitivity signal wire, the pressure sensitivity electrode and at least partly described touch control electrode pair
It should be arranged, opposite both ends are electrically connected to a signal processing center by the pressure sensitivity signal wire respectively, and detect touch
Front and back resistance change situation to judge the pressing power size of the touch signal, and is correspondingly arranged with pressure sensitivity electrode
The touch control electrode also to the pressure sensitivity electrode carry out a temperature-compensating.
Preferably, the touch control electrode includes the multigroup first direction electrode and multigroup second direction electricity that insulation is staggered
Pole, every group of first direction electrode include the multiple first direction electrode blocks laid along first direction interval and a plurality of first connecting line
The two adjacent first direction electrode blocks are separately connected, every group of second direction electrode includes being spaced to be laid in two in a second direction
Multiple second direction electrode blocks between adjacent first direction electrode；The pressure sensitivity electrode is and at least one set of first direction
The first party that electrode or at least one second direction electrode block are correspondingly arranged, and are correspondingly arranged with the pressure sensitivity electrode
To electrode or the second direction electrode block being correspondingly arranged to the pressure sensitivity electrode one temperature-compensating of progress.
Preferably, the three-dimensional touch panel includes a plurality of second signal line, when the pressure sensitivity electrode be with it is at least one
When the second direction electrode block is correspondingly arranged, the opposite both ends of the second direction electrode block being correspondingly arranged with pressure sensitivity electrode
The signal processing center is connected to by the second signal line respectively.
Preferably, the three-dimensional touch panel further comprises a plurality of first signal wire, the one of the first direction electrode
End or opposite both ends are connected to the signal processing center by first signal wire respectively.
Preferably, the first direction electrode block and the second direction electrode block are comb-like pattern, and are mutually embedded and set.
Preferably, the material identical of the material of the pressure sensitivity electrode and the second direction electrode block being correspondingly arranged, institute
It states pressure sensitivity electrode and carries out institute by way of being connected to same Wheatstone bridge with the second direction electrode block being correspondingly arranged
State temperature-compensating.
Preferably, the pattern of the pressure sensitivity electrode and the pattern for the second direction electrode block being correspondingly arranged differ,
And carry out the temperature-compensating in such a way that a value subtracts.
Preferably, the pattern of the pressure sensitivity electrode be the radial, convoluted made of a pressure drag material conductive line bends or
Broken line type, and the second direction electrode block pattern being correspondingly arranged is block structure.
Preferably, the pressure sensitivity electrode and the second direction electrode block positive and negative temperature coefficient materials each other, between the two
Meet αPressure/αIt touches=(ρ0 pressureLPressure/SPressure)/(ρ0 touchesLIt touches/SIt touches) when, the second direction electrode block is warm to be carried out to the pressure sensitivity electrode
Degree compensation；Wherein, LPressure、SPressure、ρ0 pressureLength, area, the resistivity of pressure sensitivity electrode, L are indicated respectivelyIt touches、SIt touches、ρ0 touchesSecond is indicated respectively
Length, area, the resistivity of direction electrode block, αPressureExpression forms the temperature coefficient of the material of the pressure sensitivity electrode, αIt touchesIndicate shape
At the temperature coefficient of the material of the second direction electrode block.
Preferably, the area of the pressure sensitivity electrode and the second direction electrode block being correspondingly arranged is 25mm2~
225mm2。
Preferably, the pressure sensitivity electrode is identical as the second direction electrode block pattern being correspondingly arranged, and material differs,
And carry out the temperature-compensating in such a way that a value subtracts.
Preferably, the three-dimensional touch panel includes a plurality of first signal wire, when the pressure sensitivity electrode is and at least one set
When the first direction electrode is correspondingly arranged, the both ends opposite with the first direction electrode that the pressure sensitivity electrode is correspondingly arranged
The signal processing center is connected to by first signal wire respectively.
Preferably, the three-dimensional touch panel includes an at least collets, and second direction electrode described in every group further includes more
The second connecting line of item is separately connected two adjacent second direction electrode blocks, and the collets are set to first connecting line and institute
It states between the second connecting line so that the first direction electrode is electrically insulated with the second direction electrode.
Preferably, the three-dimensional touch panel includes a plurality of third signal wire, one end of the second direction electrode or phase
To both ends the signal processing center is connected to by the third signal wire respectively.
Preferably, the touch panel includes a plurality of second signal line, one end of the second direction electrode block or opposite
Both ends the signal processing center is connected to by the second signal line respectively.
Preferably, the pressure sensitivity electrode and the first direction electrode block positive and negative temperature coefficient materials each other, it is both above-mentioned
Pattern it is identical and meet αPressure/αIt touches=(ρ0 pressure/hPressure)/(ρ0 touches/hIt touches) when, the first direction electrode is to the pressure sensitivity electrode
Carry out a temperature-compensating；Wherein, hPressure、ρ0 pressureThickness, the length of pressure sensitivity electrode, h are indicated respectivelyPressure、ρ0 pressureFirst direction electricity is indicated respectively
The thickness of pole, length, αPressureExpression forms the temperature coefficient of the material of the pressure sensitivity electrode, αIt touchesExpression forms the first direction electricity
The temperature coefficient of the material of pole.
Preferably, the pressure sensitivity electrode is identical as the first direction electrode pattern being correspondingly arranged, and material differs, and
The temperature-compensating is carried out in such a way that a value subtracts.
Preferably, the insulating medium layer is a substrate, and the touch control electrode layer is disposed on the pressure sensitivity electrode layer
The upper and lower surface of the substrate.
Preferably, the insulating medium layer is an optical cement；The three-dimensional touch device further includes that a upper substrate is located at institute
State the other side of the touch control electrode layer far from the optical cement；One lower substrate is located at the pressure sensitivity electrode layer far from the optical cement
The other side；The i.e. described touch control electrode layer is set to the lower surface of the upper substrate, and the pressure sensitivity electrode layer be set to it is described under
The upper surface of substrate, the touch control electrode layer pass through the optics glue laminating again with the pressure sensitivity electrode layer.
Preferably, the first direction electrode block is an integral molding structure with first connecting line.
Compared with the existing technology, three-dimensional touch panel provided by the invention has the following advantages：
1, the three-dimensional touch panel has three-dimensional detecting function, since its touch control electrode layer and the setting of pressure sensitivity electrode layer exist
The relatively low volume side of two of same insulating medium layer, therefore, and can realize temperature-compensating of the touch control electrode to pressure sensitivity electrode, effectively
It avoids and eliminates the method that temperature effect influences using as hardware (such as double-deck pressure sensitivity electrode layer) is separately arranged in the prior art, from
And the thickness of the touch panel of pressure-sensing is reduced, meet the market demand of frivolous words electrode equipment instantly.
2, in the present invention, the pressure sensitivity electrode with provide the touch control electrode of temperature-compensating for it and be correspondingly arranged, therefore, two
Person is similar by the variable quantity of temperature, by the pressure sensitivity electrode and material, pattern or the area of above-mentioned touch control electrode etc.
Limitation, and the positive and negative temperature coefficient materials of use combine, value subtracts mode and Wheatstone bridge mode realizes set corresponding with pressure sensitivity electrode
The touch control electrode set carries out temperature-compensating to pressure sensitivity electrode.
3, in some embodiments, the touch control electrode that the pressure sensitivity electrode is arranged corresponding thereto can be to be arranged in series, from
And be conducive to the detecting of resistance change, make touch control electrode that can carry out temperature-compensating to the corresponding pressure sensitivity electrode.
4, the touch control electrode includes first direction electrode and second direction electrode, is respectively provided on the same layer, first party
It uses collets to separate between electrode and second direction electrode, the precision of touch control operation signal detection can be effectively improved.And
The touch control electrode being correspondingly arranged with pressure sensitivity electrode uses bilateral Wiring structure, in addition to can in order to temperature compensation signal detecting it
Outside, can be decayed with antinoise signal.
5, capacitance touch position detection can be achieved in the touch control electrode part in three-dimensional touch panel provided by the present invention,
The strain of the pressure sensitivity electrode can generate corresponding resistance change according to pressing dynamics, to realize sentencing for pressing force size
It is disconnected.Position signal is different from the type of power high low signal, therefore, after the detecting for completing touching signals, with the pressure sensitivity electrode pair
The touch control electrode that should be arranged can carry out the pressure sensitivity electrode temperature compensation signal detecting, unaffected between the two, from
And the position signal to pressing can be avoided to be interfered with power high low signal while ensureing effect temperature compensation, it realizes
Three-dimensional touch operates.
【Description of the drawings】
Figure 1A to Fig. 1 C is the laminated construction schematic diagram of first embodiment of the invention three-dimensional touch panel；
Fig. 2 is the planar structure schematic diagram of the touch control electrode layer of first embodiment of the invention three-dimensional touch panel；
Fig. 3 is the planar structure schematic diagram of the pressure sensitivity electrode layer of first embodiment of the invention three-dimensional touch panel；
Fig. 4 A, 4B are the planar junction of the other modes of texturing of pressure sensitivity electrode layer of first embodiment of the invention three-dimensional touch panel
Structure schematic diagram；
Fig. 5 A to Fig. 5 C are other mode of texturing schematic diagrames of the pressure sensitivity electrode of first embodiment of the invention three-dimensional touch panel；
Fig. 6 A, Fig. 6 B are first embodiment of the invention three-dimensional touch panel Wheatstone bridge connected mode schematic diagram；
Fig. 7 is that the planar structure of another mode of texturing of touch control electrode layer of first embodiment of the invention three-dimensional touch panel is shown
It is intended to；
Fig. 8 A are the planar structure schematic diagrams of the touch control electrode layer of second embodiment of the invention three-dimensional touch panel；
Fig. 8 B are the planar structure schematic diagrams of the pressure sensitivity electrode layer of second embodiment of the invention three-dimensional touch panel.
【Specific implementation mode】
In order to make the purpose of the present invention, technical solution and advantage be more clearly understood, below in conjunction with attached drawing and embodiment,
The present invention will be described in further detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention,
It is not intended to limit the present invention.
A to Fig. 1 C is please referred to Fig.1, Figure 1A to Fig. 1 C is that the laminated construction of first embodiment of the invention three-dimensional touch panel shows
It is intended to.As shown in Figure 1A, first embodiment of the invention three-dimensional touch panel 10 includes an insulating medium layer 16, a touch control electrode layer
15 and one pressure sensitivity electrode layer 17 be located at the opposite both sides of insulating medium layer 16.Touch control electrode layer 15 includes multigroup is staggered
Touch control electrode to detect the position of a touch signal, pressure sensitivity electrode layer 17 includes being correspondingly arranged at least partly touch control electrode
Pressure sensitivity electrode 171, to detect the pressing power size of the touch signal.In the present invention, touch control electrode layer 15 is gone back simultaneously
To carry out a temperature-compensating to pressure sensitivity electrode layer 17, i.e., providing a temperature compensation signal for pressure sensitivity electrode layer 17.At this
In invention, " being correspondingly arranged " refers to pressure sensitivity electrode and touch control electrode (at least one set of first direction electrode or at least one hereinafter
A second direction electrode block) position in insulating medium layer both sides is vertically to correspond to up and down, and the area of the two substantially phase
Together, but material therefor, specific pattern (present invention in pattern refer to pattern of the electrode relative to bearing substrate upright projection) then
It is not limited.
As shown in Figure 1B, in certain embodiments of the present invention, insulating medium layer 16 is a substrate, with opposite
Upper surface 161 and lower surface 162, touch control electrode layer 15 is disposed on the upper surface 161 of substrate 16, and pressure sensitivity electrode layer 17 is to set
It is placed in the lower surface 162 of substrate 16.The material of substrate 16 can be glass, sapphire, polyimides (PI), polypropylene (PP),
Polystyrene (PS), acrylonitrile-butadiene-styrene (ABS) (ABS), polyethylene terephthalate (PET), polyvinyl chloride (PVC),
The hard such as makrolon (PC), polyethylene (PE), polymethyl methacrylate (PMMA), polytetrafluoroethylene (PTFE) (PTFE) or flexible material
Matter.Touch control electrode layer 15 subsequently can be bonded a cover sheet (or display device) by a glue-line, and pressure sensitivity electrode layer 17 can lead to
It crosses another glue-line and is bonded a display device (or cover sheet) to form a complete three-dimensional touch display device.
In some embodiments, the in particular a kind of film substrate of the substrate 16, so that the three-dimensional touch panel 10
After being under pressure, the both sides of the substrate 16 are all stretching or compressive deformation, to enhance the intensity of pressure-sensing signal.
As shown in Figure 1 C, in other embodiments of the present invention, insulating medium layer 16 is an optical cement；Three-dimensional touch
Device 10 further includes a upper substrate 11 and lower substrate 12, and wherein upper substrate 11 is located at touch control electrode layer 15 far from the another of optical cement 16
Side, lower substrate 12 are located at the other side of the pressure sensitivity electrode layer 17 far from optical cement 16；I.e. touch control electrode layer 15 is set to upper substrate
11 lower surface, and pressure sensitivity electrode layer 17 is set to the upper surface of lower substrate 12, touch control electrode layer 15 and pressure sensitivity electrode layer 17 are again
It is fitted by optical cement 16.Wherein, upper substrate 11 (or lower substrate 12) can be a cover sheet, to touch table with offer one
Face and protection outer cover, and lower substrate 12 (or upper substrate 11) or a display device component.
Referring again to Fig. 2 to Fig. 3, wherein Fig. 2 is the touch control electrode layer of first embodiment of the invention three-dimensional touch panel
Planar structure schematic diagram；Wherein, Fig. 3 be first embodiment of the invention three-dimensional touch panel 10 pressure sensitivity electrode layer 17 plane
Structural schematic diagram.In the present embodiment, touch control electrode 150 includes multigroup first direction electrode 151 for being staggered of insulation and more
Group second direction electrode 153, wherein multigroup first direction electrode 151 is to extend along first direction (X-direction as shown), and edge
Second direction (Y-direction as shown) parallel arrangement；X-direction is vertical with Y-direction in one of the embodiments.Above-mentioned first party
To unrestricted with the specific location relative to the three-dimensional touch panel 10 of second direction.
More specifically, every group of first direction electrode 151 includes the multiple first directions electricity laid along first direction interval
Pole block 1511 and a plurality of first connecting line 1513 are separately connected two adjacent first direction electrode blocks 1511, in some embodiments
In, multiple first direction electrode blocks 1511 and a plurality of first connecting line 1513 are an integral molding structure, you can with identical material
Complete in same step, in addition therebetween and be not present apparent boundary line.Every group of second direction electrode 153 includes edge
Second direction interval is laid in multiple second direction electrode blocks 1531 between two adjacent first direction electrodes 151.In this implementation
In example, one end of every group of first direction electrode 151 with the first signal wire 155 by being electrically connected to a signal processing center (figure
Do not show), the opposite both ends of each second direction electrode block 1531 are electrically connected to aforementioned letter by a second signal line 156 respectively
Number processing center (the double outlet methods of hereinafter referred)；Multigroup first direction electrode 151 and multigroup second direction electrode 153 emit or
Electric signal is received, processing center changes to judge the plan-position of touch point according to the capacitance signal detected before and after touch.
In the present embodiment, pressure sensitivity electrode layer 17 includes at least one pressure sensitivity electrode 171, at least one second direction electricity
Pole block 1531 is correspondingly arranged across insulating medium layer 16.The opposite both ends of pressure sensitivity electrode 171 pass through a pressure sensitivity signal wire 175 respectively
It is electrically connected to signal processing center above-mentioned, and detects and touches front and back resistance change situation.
As shown in Fig. 2-Fig. 3, in the present embodiment, the quantity of pressure sensitivity electrode 171 and touch-control electricity in pressure sensitivity electrode layer 17
The quantity of second direction electrode block 1531 is identical in pole layer 15, and to be arranged in a one-to-one correspondence, with during pressure detection, to pressure
Sense electrode 171 carries out a temperature-compensating.
In other embodiments, as shown in Fig. 4 A, 4B, pressure sensitivity electrode layer shown in pressure sensitivity electrode layer 17a, 17b and Fig. 3
17 difference lies in：The quantity of pressure sensitivity electrode 171 might be less that the quantity of second direction electrode block 1531, and can be selective
Ground is correspondingly arranged with part second direction electrode block 1531；Also, it is not that each second direction electrode block 1531 is both needed to adopt yet
With double outlet methods, it is only necessary to ensure the both ends of the second direction electrode block 1531 being correspondingly arranged with pressure sensitivity electrode 171 by the
Binary signal line 156 is electrically connected to signal processing center；In addition, every group of opposite both ends of first direction electrode 151 also may be used
To be electrically connected to signal processing center (i.e. double outlet methods) by one first signal wire 155, this double outlet methods can
During capacitance signal is detected, to be emitted by both ends or receive electric signal to avoid the decaying of signal, raised position
The sensitivity of detecting.
In the present embodiment, the second direction electrode block 1531 being correspondingly arranged with pressure sensitivity electrode 171 is in addition in the first sequential
Capacitance signal detecting during, to emit or receive outside electric signal, also the resistance signal of the second sequential detect process
In, with pressure sensitivity electrode synchronize detect the resistance value change amount signal after stress pressing, to when calculating pressing dynamics size,
One temperature-compensating is carried out to 171 resistance change of pressure sensitivity electrode.
More specifically, in the present embodiment, a temperature-compensating is carried out to pressure sensitivity electrode layer 17 using touch control electrode layer 15
Mode mainly include three kinds：Positive and Negative Coefficient Temperature material in series mode, value subtract mode and Wheatstone bridge mode, different temperature
Degree compensation way has different requirements to pattern, the material of touch control electrode layer 15 and pressure sensitivity electrode layer 17, specifically has following several
Combination：
Positive and negative temperature coefficient materials series system：
The formula ρ varied with temperature according to the calculation formula R=ρ L/S and resistivity of material of object resistanceT=ρ (1+ α T),
It can derive the resistance change amount that object is affected by temperature：
ΔRT=RT2-RT1
=(1+ α T2)ρ0L/S-(1+αT1)ρ0L/S
=(T2-T1)αρ0L/S
=Δ T α (ρ0L/S)
=Δ T α R0(1)；
Wherein, Δ T is expressed as the temperature variation of object, ρ0Resistivity for material at T=0 DEG C, α are resistivity of material
Temperature coefficient, and be proportionate according to the resistivity and temperature of material or it is negatively correlated show as positive value or negative value, for consolidating for material
There are property, R0Resistivity for object at T=0 DEG C, can be according to the object resistance value R measured in any temperature TTAnd material
ρ0, α calculate and obtain.
Theoretically, when two objects are set to a heat conduction object (such as the pressure sensitivity electrode invented and the touch control electrode being correspondingly arranged)
The both sides up and down of body (such as the insulating medium layer 16 of the present invention), then touch electrode and touch control electrode are being influenced to cause by ambient temperature
Δ T be identical.
Assuming that Δ RF is pressed、ΔRF is touchedThe resistance change amount that respectively pressure sensitivity electrode, touch control electrode compression force effect generate, Δ
RT is pressed、ΔRT is touchedRespectively pressure sensitivity electrode, touch control electrode be affected by temperature and the resistance change amount that generates, and Δ RPressure、ΔRIt touchesRespectively
For the resistance change amount that pressure sensitivity electrode, touch control electrode can actually be measured, wherein Δ RPressure=Δ RF is pressed+ΔRT is pressed, Δ RIt touches=Δ RF is touched+
ΔRT is touched。
In the present embodiment, temperature change is eliminated to the variable quantity of 171 resistance value of pressure sensitivity electrode in order to reach
It influences, it, can be by the pressure sensitivity electrode 171 and the second direction electrode block to obtain the pressing force signal not being affected by temperature
1531 using temperature coefficient material positive and negative each other, and connects when measuring resistance change.Specifically first
In sequential, the second direction electrode block 1531 being correspondingly arranged with pressure sensitivity electrode 171 can be used for test position information, and at second
In sequence, switches to the second direction electrode block 1531 that pressure sensitivity electrode 171 is correspondingly arranged and connect with the formation of pressure sensitivity electrode 171, from
And it is that pressure sensitivity electrode 171 provides temperature-compensating to realize the second direction electrode block 1531.Its temperature compensation principle is as follows：
Finger presses the resistance change amount Δ after the touch control electrode of the pressure sensitivity electrode 171 and corresponding setting
RAlways(influence containing pressure and temperature) is：
ΔRAlways=Δ RPressure+ΔRIt touches=(Δ RF pressures+ΔRT is pressed)+(ΔRF is touched+ΔRT is touched) (2)；
Wherein, Δ RF is pressedWith Δ RF is touchedIt is only related with finger pressing force size, it is unrelated with temperature change.And Δ RT is pressedWith Δ RT is touched
It is only related with temperature change, it can be by by Δ RT is pressedWith Δ RT is touchedAnd adjust to smaller, to reduce the influence of temperature.
In the present embodiment, following design can be used in order to obtain more preferably effect temperature compensation：The pressure sensitivity electrode
171 are formed by PTC material (or negative temperature coefficient material), and the second direction electrode block 1531 is by negative temperature coefficient
Material (or PTC material) is formed, i.e., used by the described pressure sensitivity electrode 171 and the second direction electrode block 1531
Material positive and negative temperature coefficient materials each other.
Wherein, the PTC material refers to the resistance value of its own as temperature increases and raised material, and
The negative temperature coefficient material refers to the material that the resistance value of its own is reduced as temperature increases.
In the present embodiment, herein and PTC material as described below may include but be not only restricted to：It is nano level
The metals such as silver, copper, aluminium, gold or tin indium oxide (Indium Tin Oxide, ITO), tin-antiomony oxide (Antimony Doped
Tin Oxide, ATO), the metal oxides such as indium zinc oxide (IndiumZinc Oxide, IZO) or graphene, metal grill,
Any one material of electrically conducting transparent high molecular material.
Herein and negative temperature coefficient material as described below may include but be not only restricted to：Carbon nanotubes, zinc oxide.
In the present embodiment, material used by pressure sensitivity electrode 171 and second direction electrode block 1531 is different, due to positive temperature
Degree coefficient material causes the ascending amount of resistance to decline with temperature with negative temperature coefficient material and lead to resistance with temperature rise
It cancels out each other between slippage, i.e. Δ RT is pressed+ΔRT is touched=0, to which second direction electrode block 1531 can be realized to pressure sensitivity electrode 171
The temperature-compensating of progress.
Further, in order to make Δ RT is pressed+ΔRT is touched=0 sets up, then Δ RT is pressedWith Δ RT is touchedThe following conditions need to be met：
αPressureΔT(ρ0 pressureLPressure/SPressure)+αIt touchesΔT(ρ0 touchesLIt touches/SIt touches)=0 (3)；
Wherein, the present invention is herein and L as described belowPressure、LIt touches、SPressure、SIt touches、ρ0 pressure、ρ0 touchesRepresented content is as follows：LPressure、SPressure、
ρ0 pressureThe initial length of pressure sensitivity electrode 171, area, resistivity are indicated respectively；LIt touches、SIt touches、ρ0 touchesSecond direction electrode block is indicated respectively
The initial length of 1531 (second direction electrodes 153), area, resistivity；αPressureExpression forms the material of the pressure sensitivity electrode 171
Temperature coefficient, wherein αPressureValue can be positive or negative.αIt touchesExpression forms the temperature system of the material of the second direction electrode block 1531
Number, wherein the second direction electrode block 1531 is correspondingly arranged with the pressure sensitivity electrode 171, αPressureValue can be negative or positive, LPressureValue with
LIt touchesValue is further expressed as length of the pressure sensitivity electrode 171 with the second direction electrode block 1531 along current direction.
It particularly may be divided into the following two kinds situation：
Form the material of pressure sensitivity electrode 171 and second direction electrode block 1531 positive and negative temperature coefficient materials each other.
Such as work as | αPressure/αIt touches| when=1 (| αPressure|=| αIt touches|), in order to make above-mentioned formula (3) set up, then：
(ρ0 pressureLPressure/SPressure)/(ρ0 touchesLIt touches/SIt touches)=1 (4)；
Wherein, in above-mentioned formula (4), electricalresistivityρ0 pressureWith electricalresistivityρ0 touchesTo form pressure sensitivity electrode 171 or second direction electrode
The characteristic of the material of block 1531, therefore, when | αPressure/αIt touches| when=1, electricalresistivityρ0 pressureWith electricalresistivityρ0 touchesRatio can also ignore,
Therefore it only needs to consider (LPressure/SPressure)/(LIt touches/SIt touches) value whether be 1.
And work as | αPressure/αIt touches| when ≠ 1, in order to make above-mentioned formula (3) set up, then：
αPressure/αIt touches=(ρ0 pressureLPressure/SPressure)/(ρ0 touchesLIt touches/SIt touches) (5)；
As can be seen that Δ R from above-mentioned formula (5)T is pressed+ΔRT is touchedValue whether be equal to 0, with the pressure sensitivity electrode 171 and described
The pattern form of second direction electrode block 1531 is unrelated, and pattern can be identical or differ.
Those skilled in the art to single pressure sensitivity electrode 171 and corresponding can also set according to above-mentioned formula (4) and formula (5)
It the length L for the single second direction electrode block 1531 set and is adjusted along the cross-sectional area S of current direction.
The resistance value of the pressure sensitivity electrode 171 is influenced in order to eliminate or weaken temperature, need to control pressure sensitivity electrode 171 and with
Its second direction electrode block 1531 being correspondingly arranged is whole to receive identical change in temperature Δ T, and need to make pressure sensitivity electrode 171 and with
The absolute value of formula α (ρ L/S) is close in its second direction electrode block 1531 being correspondingly arranged, and can just make Δ RT is pressedWith Δ RT is touchedBetween
It can cancel out each other, it therefore, to achieve the above object, in the present invention can also be further right with it by pressure sensitivity electrode 171
The area for the second direction electrode block 1531 that should be arranged is limited to 25mm2-225mm2.The area of pressure sensitivity electrode 171 is 25mm2~
225mm2, preferably 25mm2To 100mm2It is to match with the power of normal adult's finger and temperature action range.It is above-mentioned about
The restriction of 1531 area of second direction electrode block of 171 corresponding setting of pressure sensitivity electrode, to can avoid due to pressure sensitivity electrode
171 areas are excessive or too small, and so that finger temperature is changed the problem of being unable to get accurate induction and occur.Specifically, in the present invention
In, force application object (capacitance pen or finger) is commonly used in normally force range (0~10N), can effectively be detectd by pressure sensitivity electrode 171
The deformation range measured, probably can be in 25mm2To 225mm2In the range of, and the force application object with temperature that finger etc. is common
After pressing, the range that temperature can influence about is less than 225mm2, more preferably it is less than 100mm2。
However, in a further embodiment, those skilled in the art work as can be according to force application object and amount of force difference
And determine different induction ranges.
In addition to above-mentioned pressure sensitivity electrode 171 and subzero temperature are formed using with PTC material (or negative temperature coefficient material)
It spends coefficient material (or PTC material) to be formed except touch control electrode 150, value also can be used subtracting mode keeps second direction electric
Pole block 1531 carries out temperature-compensating to pressure sensitivity electrode 171.
Value subtracts mode 1：
The formula ρ varied with temperature according to the calculation formula R=ρ L/S and resistivity of material of object resistanceT=ρ (1+ α T),
The resistance change amount that object is affected by temperature can be derived, such as Δ RT=Δ T α R0, wherein α is the temperature coefficient of material,
R0The resistance value for being the object that is affected by temperature at 0 DEG C, Δ T is the temperature variation of object, Δ RTIt is affected by temperature for object
Resistance change amount.
Theoretically, when two objects are set to a heat conduction object (such as the pressure sensitivity electrode invented and the touch control electrode being correspondingly arranged)
The both sides up and down of body (such as the insulating medium layer 16 of the present invention), then pressure sensitivity electrode and touch control electrode are being influenced to cause by ambient temperature
Δ T be it is identical, and pressure sensitivity electrode and the shape pattern of touch control electrode determine after its α R0It is also known, both that is by temperature
The resistance change amount ratio that degree is influenced and generated is a constant.
Resistance value identical with the embodiment of the first above-mentioned temperature-compensating to be, that pressure sensitivity electrode 171 can actually be measured
Variation delta RPressure=Δ RF is pressed+ΔRT is pressed, and the resistance change amount Δ R that second direction electrode block 1531 can actually be measuredIt touches=Δ
RF is touched+ΔRT is touched。
Then forgoing relationship can be with formulae express：
Wherein, the resistance value that k is expressed as pressure sensitivity electrode 171 and second direction electrode block 1531 is affected by temperature and generates becomes
Change amount ratio is a constant.
In a kind of ideal situation, touch control electrode only generates resistance change without being generated to pressure response to temperature-responsive
Resistance change, i.e. Δ RF is touchedEqual to 0, the value side of subtracting may be used when carrying out temperature-compensating in the second direction electrode block 1531
Formula is calculated：
ΔRF is pressed=Δ RPressure-ΔRT is pressed
=Δ RPressure-kΔRT is touched
=Δ RPressure-k(ΔRIt touches-ΔRF is touched)
=Δ RPressure-kΔRIt touches[ΔRF is touched=0] (7)；
However in practical applications, if pattern area be more than force application object temperature influence range, and pressure sensitivity electrode 171 with
When the pattern for the touch control electrode 150 being correspondingly arranged differs, then pressure sensitivity electrode 171 and the touch control electrode 150 that is correspondingly arranged are by temperature
Degree influences to generate the Δ R of resistance changeT is pressed、ΔRT is touched, only with the two in the R ' being affected by temperature in range0 pressure、R’0 touchesIt is linear
Correlation, without with the practical detectable R of the two0 pressure、R0 touchesAt determining proportionate relationship, leads to pressure sensitivity electrode and what is be correspondingly arranged touches
Electrode is controlled in the resistance change amount ratios delta R being affected by temperature in rangeT is pressed/ΔRT is touchedIt can not determine, i.e., aforementioned formula (6) is no
It sets up.
Also, when three-dimensional touch panel has translucency demand, 15 available material of the touch control electrode layer passes through packet
Include at least the one of PEDOT, ITO, carbon nanotube, gallium oxide zinc, indium gallium zinc, graphene, metal nanometer line, metal grill etc.
Kind, and these materials are also the common pressure drag material of pressure sensitivity electrode layer, i.e., the material that touch control electrode layer is selected can also be pressed power
It acts on and generates change in resistance, is i.e. Δ RF is touched≠ 0, then above-mentioned formula (7) is invalid.
To solve the above problems, the adoptable value of the present invention subtracts mode 1 and can do following design：Pressure sensitivity electrode 171 with it is right
The area for the second direction electrode block 1531 that should be arranged is 25mm2~225mm2, pattern differs, and material can identical or not phase
Together.When the area of pressure sensitivity electrode 171 and the second direction electrode block 1531 being correspondingly arranged is 25mm2~225mm2Preferably 25mm2
To 100mm2When, it is ensured that after being acted on by force application object, pressure sensitivity electrode 171 and the second direction electrode block being correspondingly arranged
1531 entirety are affected by temperature, i.e., pressure sensitivity electrode 171 is by the R ' in force application object temperature pattern0 pressureI.e. it can directly be surveyed
The overall resistance R obtained0 pressure, the second direction electrode block 1531 being correspondingly arranged is by the R ' in force application object temperature pattern0 touchesI.e.
Its directly detectable overall electrical resistance R0 touches, i.e., above-mentioned formula (6) establishment.Wherein, about pressure sensitivity electrode 171 and corresponding setting
Second direction electrode block 1531 area restriction reason and the first specific implementation mode of the present embodiment in pressure sensitivity electrode 171
The reasons why being limited with the area of second direction electrode block 1531 is consistent, and details are not described herein.
Second direction electrode block 1531 is designed as different pattern with pressure sensitivity electrode 171, in the present embodiment, by touch control electrode
150 are designed as to the less sensitive pattern of pressure, and pressure sensitivity electrode 171 is designed as to pressure-sensitive pattern so that Δ RF is touchedPhase
For Δ RF is pressedIt can be ignored, i.e. Δ RF is touched≈ 0, then above-mentioned formula (7) establishment.Such as touch control electrode 150 is as shown in Figure 3
The block structures such as triangle or square, and pressure sensitivity electrode 171 is then as shown in Figure 5 A to FIG. 5 C, is a pressure drag material conductive line bends
Made of radial, convoluted or broken line type.
Value subtracts mode 2：
Pressure sensitivity electrode 171 is identical as 150 pattern of touch control electrode being correspondingly arranged, and material differs, and area is unrestricted.
In value subtracts mode 2, because pressure sensitivity electrode 171 is identical as 150 pattern of touch control electrode being correspondingly arranged, then no matter both
Area how, it is believed that the two is in the R ' at place that is pressed0 pressure、R’0 touchesWith the R of the two entirety0 pressure、R0 touchesIn identical correspondence,
That is R '0 pressure/R’0 touches=R0 pressure/R0 touches, i.e., above-mentioned formula (6) establishment.
And pressure sensitivity electrode 171 selects different materials from the second direction electrode block 1531 being correspondingly arranged, and makes pressure sensitivity electrode
The 171 second direction electrode blocks 1531 selected the material more sensitive to pressure, and be correspondingly arranged are selected less sensitive to pressure
Material so that Δ RF is touchedRelative to Δ RF is pressedIt can be ignored i.e. Δ RF is touched≈ 0, then above-mentioned formula (7) also set up.
In addition to it is above-mentioned using second direction electrode block 1531 to the pressure sensitivity electrode 171 carry out temperature-compensating by the way of it
Outside, also temperature-compensating can be realized by Wheatstone bridge mode, it is specific as follows：
Wheatstone bridge mode：
In this embodiment, the pressure sensitivity electrode 171 and the material for the second direction electrode block 1531 being correspondingly arranged can be
Identical, pattern can be identical or different, and area is unrestricted.
When the area of pressure sensitivity electrode 171 and the second direction electrode block 1531 being correspondingly arranged is 25mm2~225mm2(with
One, the second specific implementation mode is identical), material identical may be used Wheatstone bridge and more precisely carry out temperature-compensating.
Specifically, by pressure sensitivity electrode 171 and the second direction electrode block 1531 being correspondingly arranged with shown in Fig. 6 A or Fig. 6 B
The mode of serial or parallel connection access in the same Wheatstone bridge, according to Δ RT=Δ T α R0With pressing dynamics size in Fig. 6 A
The registration U0 ∝ (R of positively related potentiometer U0Pressure/Ra–RIt touches/ Rb), it is assumed that the U0=0 when being not pressed, pressure sensitivity electrode with it is corresponding
The touch control electrode temperature of setting is T1, from T after being pressed1To T2Variation is Δ T, then following formula can be obtained：
As it can be seen that U0 is unrelated with Δ T from above formula, U0 ∝ (R in Fig. 6 BPressure/RIt touches- Ra/Rb) also similar it can derive U0
It is unrelated with Δ T, i.e., when carrying out temperature-compensating using Wheatstone bridge mode, pressure sensitivity electrode 171 and the second direction being correspondingly arranged
Electrode block 1531 can fully achieve temperature-compensating, and the pattern of the two can be identical or differs.
In the present embodiment, the second direction electrode block 1531 of touch control electrode layer 15 is set to the first connecting line 1513
Side, i.e. first direction electrode block 1511, second direction electrode block 1531, which are that bulk is oblique, to be arranged alternately, but the touch-control of the present invention
It's not limited to that for the pattern of electrode layer, and in other embodiment, the pattern of touch control electrode layer 15a is as shown in fig. 7, first direction
Electrode 151a, second direction electrode block 1531a are mutually embedded for pectinate texture and set, i.e. the broach of second direction electrode block 1531a is embedding
Enter into the broach gap of first direction electrode 151a, the mutually embedding design of this pectinate texture can increase first direction electrode
Coupled capacitor between 151a and second direction electrode block 1531a, the sensitivity of raised position detection.
In some embodiments, the touch control electrode being correspondingly arranged with the pressure sensitivity electrode 171 can also be second direction electrode
153, one or more of first direction electrode block 1511, first direction electrode 151, it is also unrestricted herein.
Referring again to Fig. 8 A to Fig. 8 B, Fig. 8 A are the flat of the touch control electrode layer of second embodiment of the invention three-dimensional touch panel
Face structural schematic diagram；Fig. 8 B be second embodiment of the invention three-dimensional touch panel pressure sensitivity electrode layer planar structure signal
Figure.Second embodiment of the invention three-dimensional touch panel 20 includes that a touch control electrode layer 25 and a pressure sensitivity electrode layer 27 are located at
The opposite both sides of insulating medium layer.Different from the first embodiment in the present embodiment, in touch control electrode layer 25, every group
One direction electrode 251 further includes that a plurality of first connecting line 2513 is separately connected two adjacent first direction electrode blocks 2511, every group
Second direction electrode 253 further includes that a plurality of second connecting line 2533 is separately connected two adjacent second direction electrode blocks 2531, is touched
It further includes that a collets 252 are set between the first connecting line 2513 and the second connecting line 2533 so that first party to control electrode layer 25
It is electrically insulated to electrode 251 and second direction electrode 253.
First direction electrode 251, second direction electrode 253 at least one end pass through one first signal wire 255,1 respectively
Three signal wires 257 are electrically connected to a signal processing center (not shown) to emit or receive electric signal, and according to touch before and after
The capacitance signal detected changes to judge the plan-position of touch point.
In the present embodiment, the quantity of pressure sensitivity electrode 271 is identical as the quantity of first direction electrode 251, and a pair of for one
It should be arranged, every group of pressure sensitivity electrode 271 further includes that a plurality of pressure sensitivity signal wire 277 connects two adjacent pressure sensitivity electrodes 271.But at other
In embodiment, the quantity of pressure sensitivity electrode 271 might be less that the quantity of first direction electrode 251, and only with part first party
It is correspondingly arranged to electrode 251.The first direction electrode 251 being correspondingly arranged with pressure sensitivity electrode 271 is except wherein one end is by one first
Signal wire 255 is electrically connected to outside aforementioned signal processing center, and the opposite other end is also by 255 electricity of another first signal wire
Property is connected to aforementioned signal processing center.
Correspondingly, in the other embodiment of the present invention, touch control electrode layer 25 can also use touch-control as shown in Figure 2
Electrode layer pattern designs, i.e., the one or both ends of second direction electrode are electrically connected to aforementioned letter by a second signal line respectively
Number processing center.
In the present embodiment, the first direction electrode 251 being correspondingly arranged with pressure sensitivity electrode 271 is in addition to the electricity in the first sequential
During holding signal detection, to emit or receive outside electric signal, also during the resistance signal of the second sequential is detected, with
Pressure sensitivity electrode synchronizes the resistance value change amount signal after detecting stress pressing, to when calculating pressing dynamics size, to pressing
271 resistance change of sense electrode carries out a temperature-compensating.
In a further embodiment, the pressure sensitivity electrode 271 can also be irregular array distribution or be spaced apart, and be distributed
Position is unrestricted with quantity.The pressure sensitivity electrode 271 can be with the first direction electrode 251 or second direction electrode 253
Part is correspondingly arranged, and realizes that the first direction electrode 251 or second direction electrode 253 carry out the pressure sensitivity electrode 271
One temperature-compensating.
In the present embodiment, carry out temperature-compensating variant embodiment can be similar in first embodiment of the invention just,
Negative temperature coefficient material tandem compound mode, wherein the pattern of pressure sensitivity electrode 271 and the first direction electrode 251 being correspondingly arranged
Need it is identical, to ensure to be affected by temperature and cause the resistance change of equal proportion, material differ and its temperature coefficient each other
It is positive and negative.
The formula (5) in positive and negative temperature coefficient materials tandem compound mode in first embodiment, can also further indicate that
For：
αPressure/αIt touches=(ρ0 pressureLPressure/dPressurehPressure)/(ρ0 touchesLIt touches/dIt toucheshIt touches)(5’)
Wherein, LPressure、LIt touches、ρ0 pressure、ρ0 touches、αPressureAnd αIt touchesRepresented content such as first embodiment Chinese style (5) is similar, herein not
It repeats again.dPressureAnd dIt touchesIndicate that the first direction electrode 251 of pressure sensitivity electrode 171 and corresponding setting is transversal along current direction respectively
The width in face, hPressureAnd hIt touchesThe thickness of pressure sensitivity electrode 171 and the first direction electrode 251 of corresponding setting is indicated respectively.
Further, in order to realize that first direction electrode 251 carries out complete temperature-compensating to pressure sensitivity electrode 271, also
The first direction electrode 251 can be made identical as 271 pattern of pressure sensitivity electrode, i.e. the length of the two is (more excellent for electrode edge electricity
Flow the length in direction), in above-mentioned formula (5 ') then L identical as thicknessPressure=LIt touchesAnd dPressure=dIt touches, therefore, formula (5 ') can further table
It is shown as：
αPressure/αIt touches=(ρ0 pressure/hPressure)/(ρ0 touches/hIt touches) (5 ＂)
When the material for the first direction electrode 251 for forming the pressure sensitivity electrode 171 and corresponding setting is to determine
When material, i.e., α in above-mentioned formula (5 ＂)Pressure/αIt touchesThe value determined for one, and ρ0 pressure/ρ0 touchesAlso it is a determination value, thus, it is only required to adjust hPressure/
hIt touchesRatio, you can realize that first direction electrode 251 carries out effective temperature-compensating to pressure sensitivity electrode 271.
In the present embodiment, the mode for carrying out temperature-compensating also can be used similar to the in aforementioned first embodiment second specific reality
The value for applying mode subtracts mode 2：
Pressure sensitivity electrode 271 is identical as 251 pattern of first direction electrode being correspondingly arranged, and material differs, and area is unrestricted
System.
In value subtracts mode 2, because pressure sensitivity electrode 271 is identical as 251 pattern of first direction electrode being correspondingly arranged, then no matter
How is the area of the two, it is believed that the two is in the R ' at place that is pressed0 pressure、R’0 touchesWith the R of the two entirety0 pressure、R0 touchesIn identical correspondence
Relationship, i.e. R '0 pressure/R’0 touches=R0 pressure/R0 touches, above-mentioned formula (6) establishment.
And pressure sensitivity electrode 271 selects different materials from the first direction electrode 251 being correspondingly arranged, and makes pressure sensitivity electrode 271
The second direction electrode block 2531 selected the material more sensitive to pressure, and be correspondingly arranged is selected to the less sensitive material of pressure
Material so that Δ RF is touchedRelative to Δ RF is pressedIt can be ignored i.e. Δ RF is touched≈ 0, then above-mentioned formula (7) establishment.
In a further embodiment, the first specific implementation mode and second of first embodiment of the invention also can be used specifically
The matched mode of embodiment realizes the first direction electrode 251 or the second direction electrode 253 to pressure sensitivity electricity
Pole 271 carries out a temperature-compensating.
The three-dimensional touch panel that the present invention designs passes through material, the pattern to the pressure sensitivity electrode and above-mentioned touch control electrode
Or area etc. is limited, and mode and Wheatstone bridge side are subtracted using positive and negative temperature coefficient materials tandem compound mode, value
Formula realizes that the touch control electrode being correspondingly arranged with pressure sensitivity electrode carries out temperature-compensating to pressure sensitivity electrode, eliminates or weaken temperature effect
The harmful effect brought is detected to pressing force value, the precision of pressure detection is higher, and realizes temperature without separately setting hardware
Degree compensation, reduces the thickness of three-dimensional touch panel, to adapt to the market demand of lightening electronic equipment instantly.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention principle it
Any modification made by interior, equivalent replacement and improvement etc. should all be included in the protection scope of the present invention.
Claims (20)
1. a kind of three-dimensional touch panel, which is characterized in that including：
One insulating medium layer, and
One touch control electrode layer, a pressure sensitivity electrode layer are located at the opposite both sides of the insulating medium layer；
Wherein, the touch control electrode layer includes multigroup touch control electrode for insulating and being staggered, to detect the position of a touch signal
Set, the pressure sensitivity electrode layer includes at least one pressure sensitivity electrode and a plurality of pressure sensitivity signal wire, the pressure sensitivity electrode at least partly
The touch control electrode is correspondingly arranged, and opposite both ends are electrically connected to by the pressure sensitivity signal wire in a signal processing respectively
The heart, and detect and touch front and back resistance change situation, to judge the pressing power size of the touch signal, and and pressure sensitivity
The touch control electrode that electrode is correspondingly arranged to the pressure sensitivity electrode also to carry out a temperature-compensating, wherein the temperature-compensating
Mode be that Positive and Negative Coefficient Temperature material in series mode, value subtract mode or Wheatstone bridge mode.
2. three-dimensional touch panel as described in claim 1, it is characterised in that：The touch control electrode includes that insulation is staggered
Multigroup first direction electrode and multigroup second direction electrode, every group of first direction electrode include laid along first direction interval it is more
A first direction electrode block and a plurality of first connecting line are separately connected the two adjacent first direction electrode blocks, every group of second party
Include being spaced the multiple second direction electrode blocks being laid between two adjacent first direction electrodes in a second direction to electrode；It is described
Pressure sensitivity electrode be correspondingly arranged at least one set of first direction electrode or at least one second direction electrode block, and with
The pressure sensitivity electrode first direction electrode being correspondingly arranged or the second direction electrode block that is correspondingly arranged are to institute
It states pressure sensitivity electrode and carries out a temperature-compensating.
3. three-dimensional touch panel as claimed in claim 2, it is characterised in that：The three-dimensional touch panel includes a plurality of second letter
Number line, it is described with pressure sensitivity electrode pair when the pressure sensitivity electrode is correspondingly arranged at least one second direction electrode block
The opposite both ends of the second direction electrode block that should be arranged are connected to the signal processing center by the second signal line respectively.
4. three-dimensional touch panel as claimed in claim 3, it is characterised in that：The three-dimensional touch panel further comprises a plurality of
First signal wire, one end or opposite both ends of the first direction electrode are connected to by first signal wire described respectively
Signal processing center.
5. three-dimensional touch panel as claimed in claim 3, it is characterised in that：The first direction electrode block and the second party
It is comb-like pattern to electrode block, and is mutually embedded and sets.
6. three-dimensional touch panel as claimed in claim 3, it is characterised in that：It the material of the pressure sensitivity electrode and is correspondingly arranged
The material identical of the second direction electrode block, the pressure sensitivity electrode pass through company with the second direction electrode block being correspondingly arranged
The mode for being connected to same Wheatstone bridge carries out the temperature-compensating.
7. three-dimensional touch panel as claimed in claim 3, it is characterised in that：It the pattern of the pressure sensitivity electrode and is correspondingly arranged
The pattern of the second direction electrode block differs, and subtracts mode by described value and carry out the temperature-compensating.
8. three-dimensional touch panel as claimed in claim 7, it is characterised in that：The pattern of the pressure sensitivity electrode is by a pressure drag material
Expect radial, convoluted or broken line type made of conductive line bends, and the second direction electrode block pattern being correspondingly arranged is block
Shape structure.
9. three-dimensional touch panel as claimed in claim 3, it is characterised in that：The pressure sensitivity electrode and the second direction electrode
Block positive and negative temperature coefficient materials each other, meet α between the twoPressure/αIt touches=(ρ0 pressureLPressure/SPressure)/(ρ0 touchesLIt touches/SIt touches) when, the second party
To electrode block to pressure sensitivity electrode progress temperature-compensating；
Wherein, LPressure、SPressure、ρ0 pressureLength, area, the resistivity of pressure sensitivity electrode, L are indicated respectivelyIt touches、SIt touches、ρ0 touchesSecond direction is indicated respectively
Length, area, the resistivity of electrode block, αPressureExpression forms the temperature coefficient of the material of the pressure sensitivity electrode, αIt touchesExpression forms institute
State the temperature coefficient of the material of second direction electrode block.
10. the three-dimensional touch panel as described in any one of claim 6-9, it is characterised in that：The pressure sensitivity electrode with it is corresponding
The area for the second direction electrode block being arranged is 25mm2~225mm2。
11. three-dimensional touch panel as claimed in claim 3, it is characterised in that：The pressure sensitivity electrode be correspondingly arranged it is described
Second direction electrode block pattern is identical, and material differs, and subtracts mode by described value and carry out the temperature-compensating.
12. three-dimensional touch panel as claimed in claim 2, it is characterised in that：The three-dimensional touch panel includes a plurality of first
Signal wire, when the pressure sensitivity electrode is correspondingly arranged at least one set of first direction electrode, with the pressure sensitivity electrode pair
The opposite both ends of the first direction electrode that should be arranged are connected to by first signal wire in the signal processing respectively
The heart.
13. three-dimensional touch panel as claimed in claim 12, it is characterised in that：The three-dimensional touch panel includes at least one exhausted
Edge block, second direction electrode described in every group further include that a plurality of second connecting line is separately connected two adjacent second direction electrode blocks,
The collets be set between first connecting line and second connecting line so that the first direction electrode with it is described
Second direction electrode is electrically insulated.
14. three-dimensional touch panel as claimed in claim 12, it is characterised in that：The three-dimensional touch panel includes a plurality of third
Signal wire, one end or opposite both ends of the second direction electrode are connected to the signal by the third signal wire respectively
Processing center.
15. three-dimensional touch panel as claimed in claim 12, it is characterised in that：The touch panel includes a plurality of second signal
Line, one end or opposite both ends of the second direction electrode block are connected to by the second signal line at the signal respectively
Reason center.
16. three-dimensional touch panel as claimed in claim 12, it is characterised in that：The pressure sensitivity electrode and first direction electricity
Pole positive and negative temperature coefficient materials each other, the two pattern is identical and meets αPressure/αIt touches=(ρ0 pressure/hPressure)/(ρ0 touches/hIt touches) when, institute
First direction electrode is stated to carry out a temperature-compensating to the pressure sensitivity electrode；
Wherein, hPressure、ρ0 pressureThickness, the length of pressure sensitivity electrode, h are indicated respectivelyPressure、ρ0 pressureThickness, the length of first direction electrode are indicated respectively
Degree, αPressureExpression forms the temperature coefficient of the material of the pressure sensitivity electrode, αIt touchesExpression forms the material of the first direction electrode
Temperature coefficient.
17. three-dimensional touch panel as claimed in claim 12, it is characterised in that：The pressure sensitivity electrode be correspondingly arranged it is described
First direction electrode pattern is identical, and material differs, and subtracts mode by described value and carry out the temperature-compensating.
18. three-dimensional touch panel as described in claim 1, it is characterised in that：The insulating medium layer is a substrate, described to touch
Control electrode layer is disposed on the upper and lower surface of the substrate with the pressure sensitivity electrode layer.
19. three-dimensional touch panel as described in claim 1, it is characterised in that：The insulating medium layer is an optical cement；It is described
Three-dimensional touch device further includes that a upper substrate is located at the other side of the touch control electrode layer far from the optical cement；One lower substrate position
In the other side of the pressure sensitivity electrode layer far from the optical cement；The i.e. described touch control electrode layer is set to the following table of the upper substrate
Face, and the pressure sensitivity electrode layer is set to the upper surface of the lower substrate, the touch control electrode layer and the pressure sensitivity electrode layer are again
Pass through the optics glue laminating.
20. three-dimensional touch panel as claimed in claim 2, it is characterised in that：The first direction electrode block and described first
Connecting line is an integral molding structure.
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| CN201510888561.4A CN105426005B (en) | 2015-09-30 | 2015-12-07 | three-dimensional touch panel |
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| CN105677130B (en) * | 2016-04-08 | 2018-10-02 | 京东方科技集团股份有限公司 | Pressure sensitivity touch control method, pressure sensitivity touch device and pressure-sensitive touch screen |
| WO2017214901A1 (en) * | 2016-06-15 | 2017-12-21 | 深圳市汇顶科技股份有限公司 | Pressure detection apparatus and method, touch control device and electronic terminal |
| CN106201147A (en) * | 2016-07-26 | 2016-12-07 | 京东方科技集团股份有限公司 | Touch base plate and display device |
| CN106525326B (en) * | 2016-10-26 | 2018-12-18 | 中南大学 | A method of reducing piezoresistance sensor temperature drift |
| KR102380244B1 (en) | 2017-11-17 | 2022-03-28 | 엘지디스플레이 주식회사 | Apparatus for touch screen and electronic device comprising the same |
| CN109669571B (en) * | 2018-12-12 | 2020-11-24 | 武汉华星光电半导体显示技术有限公司 | Touch panel and electronic device |
| CN109917965B (en) * | 2019-03-12 | 2022-05-20 | 京东方科技集团股份有限公司 | Touch panel, display device and pressure detection method |
| CN110045873A (en) * | 2019-04-26 | 2019-07-23 | 太原理工大学 | The compound pressure sensitivity touch screen of capacitance resistance |
| CN110321032B (en) * | 2019-07-05 | 2023-10-27 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN113176837B (en) * | 2021-04-30 | 2023-03-17 | 深圳市华星光电半导体显示技术有限公司 | Three-dimensional touch sensor and display device |
| CN113391730A (en) * | 2021-06-28 | 2021-09-14 | 京东方科技集团股份有限公司 | Touch module and display device |
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