CN108363513A - A kind of touch base plate and preparation method thereof, touch control display apparatus - Google Patents
A kind of touch base plate and preparation method thereof, touch control display apparatus Download PDFInfo
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- CN108363513A CN108363513A CN201810146455.2A CN201810146455A CN108363513A CN 108363513 A CN108363513 A CN 108363513A CN 201810146455 A CN201810146455 A CN 201810146455A CN 108363513 A CN108363513 A CN 108363513A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 73
- 239000002245 particle Substances 0.000 claims abstract description 56
- 239000000758 substrate Substances 0.000 claims description 17
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 claims description 16
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 16
- 229920005573 silicon-containing polymer Polymers 0.000 claims description 16
- 229920001971 elastomer Polymers 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 14
- 239000000806 elastomer Substances 0.000 claims description 13
- 229910020698 PbZrO3 Inorganic materials 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 229910018293 LaTiO3 Inorganic materials 0.000 claims description 3
- 229910017676 MgTiO3 Inorganic materials 0.000 claims description 3
- 229910002370 SrTiO3 Inorganic materials 0.000 claims description 3
- 229910003122 ZnTiO3 Inorganic materials 0.000 claims description 3
- 229910002113 barium titanate Inorganic materials 0.000 claims description 3
- 229910021523 barium zirconate Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 229910014031 strontium zirconium oxide Inorganic materials 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
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- 238000000034 method Methods 0.000 description 9
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- 238000010438 heat treatment Methods 0.000 description 7
- 229910003781 PbTiO3 Inorganic materials 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- -1 poly dimethyl silicon Oxygen alkane Chemical class 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229920002120 photoresistant polymer Polymers 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004020 luminiscence type Methods 0.000 description 3
- 238000000059 patterning Methods 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
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- 238000010521 absorption reaction Methods 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
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- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000001755 magnetron sputter deposition Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
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- 230000005525 hole transport Effects 0.000 description 1
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical compound [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
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- 229920003023 plastic Polymers 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 238000012643 polycondensation polymerization Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
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- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Nonlinear Science (AREA)
- Human Computer Interaction (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Position Input By Displaying (AREA)
Abstract
A kind of touch base plate of present invention offer and preparation method thereof, touch control display apparatus, belong to technical field of touch control, it is insensitive can to solve the problems, such as that existing pressure touch increases the thickness of touch-control product, pressure sensitivity recognition effect.Touch control electrode can not only identify the touch control operation in the two-dimensional coordinate in plane in the touch base plate of the present invention, when user's touch-control panel, piezoelectricity sensing unit flexible is under pressure, so that generating charge between the piezoelectric particles disperseed inside flexible material layer, the generation of the charge can change the electric field around touch control electrode, to the identification to carrying out pressure perpendicular to the pressing touch-control in panel direction, and pressure sensitivity recognition effect is very sensitive, simultaneously, since the matrix of piezoelectricity sensing unit is the film layer that flexible material is formed, therefore, the design scheme will not increase the integral thickness of product.The touch base plate of the present invention is suitable for various display devices, is particularly suitable for flexible display apparatus.
Description
Technical field
The invention belongs to technical field of touch control, and in particular to a kind of touch base plate and preparation method thereof, touch control display apparatus.
Background technology
Traditional touch panel is generally only capable of the touch control operation in the two-dimensional coordinate of identification X-direction and Y-direction, i.e., can only be true
Determine the position of the pressed touch panel of user, and for the dynamics of user's pressing, then it can not be judged, this is grasped to touch-control
The further development and application of control bring limitation.
Traditional two-dimentional touch-control identification is expanded to three-dimensional, root by pressure touch (Force Touch), also referred to as 3D touch-controls
According to normal to screen direction power of different sizes, different touch commands is identified.The technology is the base identified in original X, Y two dimension
The dimension identification of Z axis (pressing) is increased on plinth.
Inventor has found that at least there are the following problems in the prior art：Existing pressure touch is usually below touch panel
Pressure sensor piece is individually attached, then pressure sensor piece is connect with flexible PCB (FPCB), according to the area of pressure sensitive
It is identified, i.e., what pressure perception unit disperseed is distributed on panel, can just be carried out when touch-control pressure reaches certain area
Pressure identification, pressure sensitivity recognition effect are insensitive；In addition the pressure sensor piece individually attached is bonded with panel, is assembled, no
Only preparation flow is cumbersome, also adds the thickness of touch-control product.
Invention content
The present invention increases that the thickness of touch-control product, pressure sensitivity recognition effect is insensitive asks for existing pressure touch
Topic provides a kind of touch base plate and preparation method thereof, touch control display apparatus.
Technical solution is used by solving present invention problem：
A kind of touch base plate, including substrate, and the touch control electrode set on substrate the same side and piezoelectricity sensing unit, it is described
Piezoelectricity sensing unit includes flexible material layer and scattering device in the piezoelectric particles in the flexible material layer, and voltage inductance should be single
Member is Chong Die with touch control electrode or is disposed adjacent.
Optionally, the touch control electrode includes the first electrode and second electrode of mutually insulated, and the voltage inductance should be single
Member is set between the first electrode and second electrode.
Optionally, the material of the piezoelectric particles includes PbTiO3、PbZrO3、MgTiO3、MgZrO3、NbTiO3、
NbZrO3、NiTiO3、NiZrO3、ZnTiO3、ZnZrO3、YbTiO3、YbZrO3、SrTiO3、Sr ZrO3、BaTiO3、BaZrO3、
LaTiO3、LaZrO3、BiTiO3、BiZrO3In any one or a few mixture.
Optionally, the particle size range of the piezoelectric particles is 0.1nm-10 μm.
Optionally, the material of the flexible material layer includes transparent elastomer, and the transparent elastomer includes strand,
The piezoelectric particles are adsorbed on the strand.
Optionally, the transparent elastomer is made of dimethyl silicone polymer, and the strand includes butyl titanate.
Include the steps that forming touch control electrode and formation voltage inductance the present invention also provides a kind of preparation method of touch base plate
The step of answering unit, the piezoelectricity sensing unit include flexible material layer and scattering device in the piezoelectricity in the flexible material layer
Particle, and piezoelectricity sensing unit is Chong Die with touch control electrode or is disposed adjacent.
Optionally, the step of formation piezoelectricity sensing unit includes：
Form first electrode；
Coat the raw material of piezoelectricity sensing unit；The raw material of the piezoelectricity sensing unit includes the prepolymer mixing of flexible material
Liquid and the piezoelectric particles for being scattered in the mixed liquor；
The raw material of piezoelectricity sensing unit is cured to obtain piezoelectricity sensing unit；
Form the second electrode with first electrode mutually insulated.
Optionally, the prepolymer mixed liquor of the flexible material includes the mixed of dimethyl silicone polymer and butyl titanate
Close object.
Optionally, the weight content of butyl titanate is 2-10% in the prepolymer mixed liquor of the flexible material.
Optionally, the ranging from 1-15% of the weight ratio of the prepolymer mixed liquor of the piezoelectric particles and flexible material.
It is described to touch the present invention also provides a kind of touch control display apparatus, including flexible display panels and above-mentioned touch base plate
Substrate is controlled to be set on the light-emitting surface of the flexible display panels.
Touch control electrode can not only identify the touch control operation in the two-dimensional coordinate in plane in the touch base plate of the present invention, when
When user's touch-control panel, piezoelectricity sensing unit flexible is under pressure so that the piezoelectricity grain disperseed inside flexible material layer
Charge is generated between son, the generation of the charge can change the electric field around touch control electrode, to perpendicular to panel direction
The identification that touch-control carries out pressure is pressed, this is very sensitive to Pressure identification effect using the touch-control that voltage inductance is answered, simultaneously as pressure
The matrix of electric induction unit is the film layer that flexible material is formed, and therefore, which will not increase the integral thickness of product.
The touch device of the present invention is suitable for various display panels, is particularly suitable for flexible display apparatus.
Description of the drawings
Fig. 1 is the structural schematic diagram of the touch base plate of the embodiment of the present invention 1；
Fig. 2 is the structural schematic diagram of the touch base plate of the embodiment of the present invention 2；
Fig. 3 is the structure schematic top plan view of the touch control electrode of the embodiment of the present invention 2；
Fig. 4 is the structural schematic diagram of the strand of the embodiment of the present invention 2；
Fig. 5 is the structural schematic diagram of the touch control display apparatus of the embodiment of the present invention 5；
Wherein, reference numeral is：1, touch control electrode；11, first electrode；12, second electrode；3, piezoelectricity sensing unit；31、
Flexible material layer；32, piezoelectric particles；4, flexible display panels；41, backboard is driven；42, luminescence unit；43, protection film layer.
Specific implementation mode
To make those skilled in the art more fully understand technical scheme of the present invention, below in conjunction with the accompanying drawings and specific embodiment party
Present invention is further described in detail for formula.
Embodiment 1：
The present embodiment provides a kind of touch base plates, as shown in Figure 1, including substrate, and the touch-control set on substrate the same side
Electrode 1 and piezoelectricity sensing unit 3, the piezoelectricity sensing unit 3 include flexible material layer 31 and scattering device in the flexible material
Piezoelectric particles 32 in the bed of material 31, and piezoelectricity sensing unit is Chong Die with touch control electrode or is disposed adjacent.
In the touch base plate of the present embodiment, touch control electrode 1 can not only identify the two dimension of the X-direction and Y-direction in plane
Touch control operation in coordinate, when user's touch-control panel, piezoelectricity sensing unit 3 flexible is under pressure so that flexible material
Charge is generated between the piezoelectric particles 32 that 31 inside of the bed of material disperses, the generation of the charge can change the electricity around touch control electrode 1
, to which the pressing touch-control of the Z axis dimension perpendicular to panel direction be identified, the pressure sensitivity recognition effect is very sensitive, together
When, since the matrix of piezoelectricity sensing unit 3 is the flexible material layer 31 that film is formed, which will not increase production
The integral thickness of product.
It is understood that touch control electrode 1 can be self-tolerant touch control electrode 1, can also be mutual capacitance type touch control electrode 1.
When touch control electrode 1 is self-tolerant touch control electrode 1, piezoelectricity sensing unit 3 can be set to the top of touch control electrode 1, can also
It is set to the lower section of touch control electrode 1, the periphery of touch control electrode 1 can also be set to, as long as piezoelectricity sensing unit 3 is set to neighbouring touch
Control electrode 1 position at, can change the electric field around touch control electrode 1 when piezoelectricity sensing unit 3 is under pressure, to perpendicular to
The pressing touch-control in panel direction is identified.
Embodiment 2：
The present embodiment provides a kind of mutual capacitance type 3D touch base plates, as shown in Fig. 2, include substrate, and it is same set on substrate
The first electrode 11 and second electrode 12 of the mutually insulated of side, wherein be equipped between the first electrode 11 and second electrode 12
Piezoelectricity sensing unit 3；The piezoelectricity sensing unit 3 includes flexible material layer 31 and scattering device in the flexible material layer 31
Piezoelectric particles 32.
Referring to attached drawing 3, the corresponding middle first electrode 11 of the present embodiment and second electrode 12 intersects and mutually insulated,
Touch-control in two-dimensional plane coordinate is mutual capacitance type；Due to piezoelectricity sensing unit 3 be set to first electrode 11 and second electrode 12 it
Between, when user's touch-control panel, piezoelectricity sensing unit 3 flexible is under pressure so that 31 inside dispersion of flexible material layer
Piezoelectric particles 32 between generate charge, the generation of the charge can change the electricity between first electrode 11 and second electrode 12
, since first electrode 11 and second electrode 12 are connect with touching signals line, therefore the change of electric field is converted into touching signals, quite
It is identified in the pressing touch-control to the Z axis dimension perpendicular to panel direction.
First electrode 11 and the specific set-up mode of second electrode 12 are not limited in the present embodiment, one in the two
Can be plate electrode, another is strip shaped electric poles, can also be as shown in Figure 3 both for strip shaped electric poles, upper and lower electrode arrangements
Mode can also be other interleaved modes as being mutually perpendicular in Fig. 3.The mutual capacitance type touch control electrode being arranged using other manner
1 can also realize 3D touch-controls according to the principle similar with the present embodiment.To first electrode 11 and second electrode 12 in the present embodiment
Specific material also without limit, when it is only used for touch-control, metal electrode can be selected；When it is used for touch-control display,
Transparent conductive material, such as ITO etc. can be selected in order to not influence the light transmittance electrode of display.
In addition, do not limited the specific material for stating flexible material layer 31 in the present embodiment, can be selected from resin material,
Elastomer, silica gel, rubber, fiber, plastics etc..
As a kind of alternative of the present embodiment, the flexible material layer 31 includes transparent elastomer.
That is, selecting transparent flexible material layer 31 in the present embodiment, such transparent material layer does not interfere with product
Light transmission, this touch base plate is suitable for being shown flexible touch-control.Wherein, elastomer is sensitive to the stress reaction of touch-control, therefore
The pressure transition by touch-control that can be constantly changes touch control electrode for the movement of its internal piezoelectric particles 32 to generate charge
Electric field；Equally when touch control operation terminates, state of the elastic physical efficiency momentary recovery before by pressure.
In actual process, can according to material itself chemically or physically performance to transparent elastomer and piezoelectric particles 32
Specific substance is selected so that piezoelectric particles 32 are can be uniformly dispersed in transparent elastic body, and in long-term touch-control in use,
Piezoelectric particles 32 can in time vacillate when transparent elastomer is pressurized, and can restore rapidly uniformly to divide after transparent elastomer is pressurized
Bulk state.
Include strand, the piezoelectric particles 32 as a kind of preferred embodiment of the present embodiment, in the transparent elastic body
It is adsorbed on the strand.
That is, providing a kind of specific combination of transparent elastomer and piezoelectric particles 32 in the present embodiment：Select
The strand of adsorbable piezoelectric particles 32 is selected, as shown in figure 4, the load of strand functioned as similar to structure of fibrous tissue
Body, microcosmic upper so that piezoelectric particles 32 are disperseed in basis material inner homogeneous.
Here, to the specific material of piezoelectric particles 32 without limiting in the present embodiment, those skilled in the art can root
According to being selected.As a kind of alternative of the present embodiment, the material of the piezoelectric particles 32 includes PbTiO3、
PbZrO3、MgTiO3、MgZrO3、NbTiO3、NbZrO3、NiTiO3、NiZrO3、ZnTiO3、ZnZrO3、YbTiO3、YbZrO3、
SrTiO3、Sr ZrO3、BaTiO3、BaZrO3、LaTiO3、LaZrO3、BiTiO3、BiZrO3In any one or a few mixing
Object.
It can be effectively adsorbed on the strand for the ease of piezoelectric particles 32, the grain size of the piezoelectric particles 32 is not easy too
Greatly, optionally, the particle size range of piezoelectric particles 32 is ranging from 0.1nm-10 μm.Preferably, the grain of the piezoelectric particles 32
Diameter ranging from 0.1nm-100nm.
More specifically, the present embodiment provides a kind of specific embodiment, the transparent elastomer is dimethyl silicone polymer,
The strand includes butyl titanate.Piezoelectric particles 32 include PbTiO3And PbZrO3Mixture.
Wherein, dimethyl silicone polymer contains a large amount of methyl, and the end group of butyl titanate includes methyl, therefore poly dimethyl silicon
Oxygen alkane is similar to the polarity of butyl titanate, and the two intersolubility is preferable.And butyl titanate and PbTiO3And PbZrO3With magnetism
Suction-operated, therefore piezoelectric particles 32 can be made to be dispersed in matrix transparent elastic body.
More specifically, in the present embodiment to the molecular weight of dimethyl silicone polymer without specifically limiting, can be according to base
The extent of elasticity that body material needs selects its specific molecular weight, for example, the molecular weight in dimethyl silicone polymer exists
When within the scope of 5000-150000, dimethyl silicone polymer is elastomeric phase, when molecular weight is less than above range, poly- diformazan
Radical siloxane can be in gel state, when molecular weight be more than above range or bigger when, dimethyl silicone polymer can be in rubber or
Solid-state.
Embodiment 3：
The present embodiment provides a kind of preparation methods of touch base plate, include the following steps：
S01, touch control electrode is formed；It is first formed on substrate specifically, the techniques such as vapor deposition, magnetron sputtering may be used
Layer of conductive film, then pattern conductive film to obtain touch control electrode using patterning processes；More specifically, the material of conductive film
Matter can be transparent conductive material, for example, the transparent metal oxides such as indium tin oxide (ITO), indium-zinc oxide (IZO)；Structure
Figure technique refers to including photoresist coating, exposure, development, etching, photoresist lift off etc. for carrying out patterned work to film
Skill.
Coating voltage inductance should be single at S02, position Chong Die or adjacent with touch control electrode on the substrate for completing above-mentioned steps
The raw material of member；The raw material of the piezoelectricity sensing unit includes the prepolymer mixed liquor of flexible material and is scattered in the mixed liquor
Piezoelectric particles；The raw material of piezoelectricity sensing unit may be selected the flowable state or viscous liquid conducive to coating processes, in the liquid
Prepolymer mixed liquor containing flexible material and piezoelectric particles, piezoelectric particles are dispersed in prepolymer mixed liquor before coating
In.
S03, the raw material of the piezoelectricity sensing unit of coating is heated, so that prepolymer further polymerize, is obtained
Cured flexible material layer, piezoelectric particles are dispersed in flexible material layer.
Embodiment 4：
The present embodiment provides a kind of preparation methods of mutual capacitance type 3D touch base plates, include the following steps：
S1, the first electrode for forming strip on substrate；It, can be with specifically, the step is similar with 3 step S01 of embodiment
Layer of conductive film is first formed on substrate using techniques such as vapor deposition, magnetron sputterings, then uses patterning processes by conductive thin
Film figure obtains first electrode；More specifically, the material of conductive film can be transparent conductive material, for example, indium tin aoxidizes
The transparent metal oxides such as object (ITO), indium-zinc oxide (IZO)；Patterning processes refer to include photoresist coating, exposure, development,
Etching, photoresist lift off etc. are used to carry out patterned technique to film.
S2, the raw material for coating piezoelectricity sensing unit namely in first electrode on the substrate for completing above-mentioned steps；It is described
The raw material of piezoelectricity sensing unit includes the prepolymer mixed liquor of flexible material and the piezoelectric particles for being scattered in the mixed liquor；Herein
Specific prepolymer mixed liquor can be selected according to the different physical characteristics for the flexible material layer to be formed, that is,
It says, different prepolymers can be selected to make the flexible material layer finally prepared that there is elasticity.
As a kind of alternative of the present embodiment, the prepolymer mixed liquor of flexible material includes dimethyl silicone polymer and titanium
The mixture of sour four butyl esters, piezoelectric particles include PbTiO3And PbZrO3Mixture.Wherein, the effect of butyl titanate is：One
Aspect mixes with dimethyl silicone polymer, i.e., butyl titanate is dispersed in dimethyl silicone polymer；Another aspect metatitanic acid
Four butyl esters are as piezoelectric particles PbTiO3And PbZrO3Carrier, to piezoelectric particles carry out magnetic absorption so that piezoelectric particles
It is dispersed in dimethyl silicone polymer.
Based on the above effect, the content of the content and dimethyl silicone polymer and piezoelectric particles of butyl titanate is related,
Wherein, if the content of butyl titanate is too big, the mechanical property of the flexible material layer after solidification is easily influenced；If butyl titanate
Content is too small, then can not piezoelectric particles be carried out effective magnetic absorption, piezoelectric particles is caused not can be uniformly dispersed.If in addition, pressure
The content of charged particle is too big, can also influence the mechanical property of the flexible material layer after solidification；If the content of piezoelectric particles is too small,
Touch control operation can not sensitively be identified.
As a kind of preferred embodiment of the present embodiment, the weight content of butyl titanate in the prepolymer mixed liquor of flexible material
For 2-10%, the ranging from 1-15% of the weight ratio of the prepolymer mixed liquor of piezoelectric particles and flexible material.It is above-mentioned heavy when meeting
Amount than when, the raw material of piezoelectricity sensing unit can form the liquid system that piezoelectric particles are evenly dispersed, stablize.Here, needing
It is bright, can also include other solvents or auxiliary agent in the prepolymer mixed liquor of flexible material, such as subsequent solid in order to accelerate
Chemical industry skill, can be added corresponding curing agent etc. in mixed liquor, and the concrete content of curing agent or other auxiliary agents can be according to actual needs
It is adjusted.
S3, the raw material of piezoelectricity sensing unit is cured to obtain piezoelectricity sensing unit；The method that heating can be used in the step
The above-mentioned mixed liquor containing piezoelectric particles is cured, specific heating temperature can be adjusted according to actual needs,
The height of heating temperature has certain influence to the performance for restoring deformation after the elasticity of flexible material layer after solidification and compression, with poly- two
For methylsiloxane is as matrix main material, when heating temperature is relatively low, polydimethylsiloxane prepolymer object is heated into one
The degree of polymerization for the polymer that step condensation polymerization obtains is relatively low, and gained flexible material layer is in silica gel shape, when heating temperature is slightly higher, contracting
The degree of polymerization for closing the polymer that polymerization obtains is higher, and obtained flexible material layer is obtained in rubber-like when heating temperature higher
The flexible material layer arrived is in solid-state.The heating temperature of usual dimethyl silicone polymer is between 50 DEG C -150 DEG C, obtained flexibility
Material layer is not only sensitive to touch-control identification, but also can restore in time after touch-control.
S4, insulating layer is formed in the substrate for completing above-mentioned steps；Wherein, transparent organic material can be used in the material of insulating layer
Material, such as transparent photomask glue (Over Coat, abbreviation OC), polyimides (Polyimide, abbreviation PI), can also use transparent
Inorganic material, such as silica, silicon nitride.
S5, the second electrode in the substrate for completing above-mentioned steps.The concrete technology of the step forms the first electricity with step S1
Extremely similar, details are not described herein.It should be noted that first electrode and second electrode are mutual capacitance type electrode, the two can be by
It is mutually perpendicular in Fig. 3, can also be other interleaved modes.
Embodiment 5：
A kind of touch control display apparatus is present embodiments provided, as shown in figure 5, including flexible display panels 4 and above-mentioned implementation
The touch base plate of example, the touch base plate are set on the light-emitting surface of the flexible display panels 4.Touch base plate includes touch control electrode
1 and piezoelectricity sensing unit 3, the piezoelectricity sensing unit 3 includes flexible material layer 31 and scattering device in the flexible material layer
Interior piezoelectric particles 32.
Referring to Fig. 5, flexible display panels 4 include driving backboard 41, luminescence unit 42, protection film layer 43.Specifically, shining
Unit 42 may include cathode, anode, and the luminous material layer (Emitting between cathode, anode
MaterialLayer, EML).More specifically, luminescence unit 42 may also include hole injection layer (Hole InjectionLayer,
HIL), hole transmission layer (Hole Transport Layer, HTL), electron transfer layer (Electron Transport
Layer, ETL) and electron injecting layer (Electron Injection Layer, EIL) etc..
In the present embodiment, touch base plate is formed directly on the light-emitting surface of flexible display panels 4, i.e., with Flexible Displays face
The protection film layer 43 of plate 4 is that substrate forms touch control electrode, piezoelectricity sensing unit etc., can also directly paste molding touch base plate
On the light-emitting surface for investing flexible display panels 4.Wherein, the product that the former obtains is more conducively lightening.
Embodiment 6：
Present embodiments provide a kind of display device comprising any one touch base plate of above-described embodiment.It is described aobvious
Showing device can be：Liquid crystal display panel, Electronic Paper, machine, tablet computer, television set, display, laptop, digital phase
Any product or component with display function such as frame, navigator.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, in the essence for not departing from the present invention
In the case of refreshing and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a kind of touch base plate, which is characterized in that touch control electrode and voltage inductance including substrate, and set on substrate the same side are answered
Unit, the piezoelectricity sensing unit include flexible material layer and scattering device in the piezoelectric particles in the flexible material layer, and
Piezoelectricity sensing unit is Chong Die with touch control electrode or is disposed adjacent.
2. touch base plate according to claim 1, which is characterized in that the touch control electrode includes the first electricity of mutually insulated
Pole and second electrode, the piezoelectricity sensing unit are set between the first electrode and second electrode.
3. touch base plate according to claim 1, which is characterized in that the material of the piezoelectric particles include PbTiO,
PbZrO3、MgTiO3、MgZrO3、NbTiO3、NbZrO3、NiTiO3、NiZrO3、ZnTiO3、ZnZrO3、YbTiO3、YbZrO3、
SrTiO3、SrZrO3、BaTiO3、BaZrO3、LaTiO3、LaZrO3、BiTiO3、BiZrO3In any one or a few mixing
Object；The particle size range of the piezoelectric particles is 0.1nm-10 μm.
4. touch base plate according to claim 1, which is characterized in that the material of the flexible material layer includes transparent elastic
Body, the transparent elastomer include strand, and the piezoelectric particles are adsorbed on the strand.
5. touch base plate according to claim 4, which is characterized in that the transparent elastomer is dimethyl silicone polymer,
The strand includes butyl titanate.
6. a kind of preparation method of touch base plate, which is characterized in that include the steps that forming touch control electrode and forming voltage inductance to answer
The step of unit, the piezoelectricity sensing unit include flexible material layer and scattering device in the piezoelectricity grain in the flexible material layer
Son, and piezoelectricity sensing unit is Chong Die with touch control electrode or is disposed adjacent.
7. the preparation method of touch base plate according to claim 6, which is characterized in that the formation piezoelectricity sensing unit
Step includes：
Form first electrode；
Coat the raw material of piezoelectricity sensing unit；The raw material of the piezoelectricity sensing unit include flexible material prepolymer mixed liquor and
It is scattered in the piezoelectric particles of the mixed liquor；
The raw material of piezoelectricity sensing unit is cured to obtain piezoelectricity sensing unit；
Form the second electrode with first electrode mutually insulated.
8. the preparation method of touch base plate according to claim 6, which is characterized in that the prepolymer of the flexible material is mixed
Close the mixture that liquid includes dimethyl silicone polymer and butyl titanate.
9. the preparation method of touch base plate according to claim 7, which is characterized in that the prepolymer of the flexible material is mixed
The weight content for closing butyl titanate in liquid is 2-10%；The weight of the prepolymer mixed liquor of the piezoelectric particles and flexible material
The ranging from 1-15% of ratio.
10. a kind of touch control display apparatus, which is characterized in that including flexible display panels and claim 1-5 any one of them
Touch base plate, the touch base plate are set on the light-emitting surface of the flexible display panels.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104425702A (en) * | 2013-09-04 | 2015-03-18 | 阿尔卑斯电气株式会社 | Composite piezoelectric element |
| CN105808001A (en) * | 2016-03-10 | 2016-07-27 | 京东方科技集团股份有限公司 | Force touch screen and display device |
| KR20170111801A (en) * | 2016-03-29 | 2017-10-12 | 주식회사 지니틱스 | Pressure detecting device having standardization pattern structure |
| CN107491215A (en) * | 2017-08-29 | 2017-12-19 | 京东方科技集团股份有限公司 | A kind of pressure touch display panel, its detection method and display device |
| CN107526462A (en) * | 2016-06-17 | 2017-12-29 | 速博思股份有限公司 | pressure touch sensing device |
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2018
- 2018-02-12 CN CN201810146455.2A patent/CN108363513B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104425702A (en) * | 2013-09-04 | 2015-03-18 | 阿尔卑斯电气株式会社 | Composite piezoelectric element |
| CN105808001A (en) * | 2016-03-10 | 2016-07-27 | 京东方科技集团股份有限公司 | Force touch screen and display device |
| KR20170111801A (en) * | 2016-03-29 | 2017-10-12 | 주식회사 지니틱스 | Pressure detecting device having standardization pattern structure |
| CN107526462A (en) * | 2016-06-17 | 2017-12-29 | 速博思股份有限公司 | pressure touch sensing device |
| CN107491215A (en) * | 2017-08-29 | 2017-12-19 | 京东方科技集团股份有限公司 | A kind of pressure touch display panel, its detection method and display device |
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