CN106708308A - Touch display device, pressure induction unit and manufacturing method thereof - Google Patents
Touch display device, pressure induction unit and manufacturing method thereof Download PDFInfo
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- CN106708308A CN106708308A CN201510790343.7A CN201510790343A CN106708308A CN 106708308 A CN106708308 A CN 106708308A CN 201510790343 A CN201510790343 A CN 201510790343A CN 106708308 A CN106708308 A CN 106708308A
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- touch
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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
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
Abstract
The invention relates to a touch display device, a pressure induction unit adopted in the touch display device and a manufacturing method of the pressure induction unit. The pressure induction unit comprises a base material, multiple first electrodes and multiple second electrodes formed on one surface of the base material and a force-sensitive resistive layer connected with the adjacent first electrodes and second electrodes; the force-sensitive resistive layer comprises an insulated base body and conducting particles dispersed in the insulated base body. The pressure induction unit is arranged between a protective cover plate and a display unit of the touch display device, so that pressure induction sensitivity is high, and the pressure induction mode does not have limitation on operation media.
Description
Technical field
The present invention relates to touch-control display field, more particularly to a kind of pressure being applied in touch display unit
The preparation method of sensing unit and the pressure sensitive unit, also relates to a kind of with above-mentioned pressure sensitive list
The touch display unit of unit.
Background technology
Touch-screen is because having the advantages that ease for operation, flexibility, it has also become PMC equipment and synthesis
Primary human's interactive meanses of information terminal (such as mobile phone, panel computer and super notebook computer).Phase
For resistive touch screen and the touch-screen of other manner, capacitive touch screen with low cost, simple structure and
The advantage such as durable, is gradually widely used by intelligent terminal.Traditional capacitance touch screen is put down where only perceiving screen body
The touch location in face and operation, it is difficult to perceive and put on the touch parameter that the pressure change in screen body surface face is brought.
In order to be able to sense the pressure change in screen body surface face, dealer also has touch-screen of the research and development with pressure sensitive,
The main pressure sensitive that touch-screen is realized using two ways at present, a kind of is to utilize touch inductor in itself
Electric capacity reaches pressure sensitive, and another is to increase extra pressure sensitive component to reach pressure sensitive.
For first way, using touch inductor electric capacity in itself, substantially perceive in different dynamics
What lower contact area between finger and touch-screen occurred changes to realize.But this mode scope of application compared with
It is narrow, for example with non-flexible medium (such as finger-joint or metal pen etc.) operation touch-screen, then can not be real
Existing pressure sensitive.For the second way, relatively common way is to increase extra pressure in touch-screen bottom
Power inductive component.Although this mode does not limit operation medium, because pressure sensitive component is arranged on display
Screen bottom, this set position determines that pressure sensitive susceptibility is not high, it is impossible to the change of accurate reflection pressure.
The content of the invention
Based on this, the present invention is intended to provide a kind of not only had higher sensitivity but also caused that operation medium was unrestricted
Pressure sensitive type touch display unit, and the pressure sensitive unit that is used of the touch display unit and the pressure
The preparation method of power sensing unit.
A kind of pressure sensitive unit, including base material, multiple first electrodes for being formed on the surface of base material one and many
Individual second electrode, and the force sensing resistance layer of first, second adjacent electrode is connected, the force sensing resistance layer
Including insulating body and the conductive particle being dispersed in insulating body.
Wherein in one embodiment, the particle diameter of the conductive particle is 10nm~0.1mm, the conductive particle
It is metal material, metallic salt material, carbon black materials, metal clad material, the one kind in macromolecular material
Or it is various, the insulating body is silica gel or resin.
Wherein in one embodiment, also including being formed on base material and cover first, second electrode covering
Layer, forms hollow out in the coating, the force sensing resistance layer is filled in the hollow out
Wherein in one embodiment, the multiple first electrode is extended in a first direction in strip, and institute
Multiple first electrodes are stated to be intervally arranged along second direction；Described in the long side interval setting of each first electrode
Multiple second electrodes.
Wherein in one embodiment, the force sensing resistance layer is arranged on a long side of first electrode, and
Connect the first electrode and be arranged on the second electrode of the corresponding long side of first electrode；Or the power is quick
Resistive layer is arranged on two long sides of first electrode, and connects the first electrode and be arranged on the first electricity
Two second electrodes of long side of pole.
Wherein in one embodiment, the force sensing resistance layer is covered in the electrode crossing position on two base materials.
Wherein in one embodiment, also including flexible PCB, the first leading electrode and the second leading electrode,
The flexible PCB is arranged on one end of the base material, and first leading electrode is set on the substrate
And the first electrode and flexible PCB are connected, second leading electrode sets on the substrate and connects
Connect the second electrode and flexible PCB.
A kind of touch display unit, including cover sheet, touch sensing unit, pressure sensitive unit and display
Unit, the touch sensing unit is used to sense the touch signal put on cover sheet, the feeling of stress
Answer unit for sense the pressure signal that puts on cover sheet, it is characterised in that the pressure sensitive list
Unit is above-mentioned any one pressure sensitive unit, and the pressure sensitive unit is arranged on cover sheet with display
Between unit.
Wherein in one embodiment, the pressure sensitive unit is arranged on cover sheet and touch sensing unit
Between, or the touch sensing unit is arranged between cover sheet and pressure sensitive unit.
Wherein in one embodiment, the pressure sensitive unit includes the first flexible PCB, the touch
Sensing unit includes the second flexible PCB, the binding of first flexible PCB and the second flexible PCB
Area is located at the different ends of cover sheet.
Wherein in one embodiment, the touch sensing unit is arranged on cover sheet and pressure sensitive unit
Between, the touch sensing unit opens up a window, and the touch display unit also includes flexible PCB,
The flexible PCB is connected with touch sensing unit and is connected with pressure sensitive unit also cross window.
A kind of preparation method of pressure sensitive unit, its step includes：
Base material is provided；
Multiple first electrodes and multiple second electrodes of patterning are formed on a surface of base material；And
Force sensing resistance layer, force sensing resistance layer connection first electrode and the second electrode, system are made on base material
The step of making force sensing resistance layer is included in coating on base material and forms force sensitive resistive material, and through exposure and development；
Or the step of making force sensing resistance layer is included in and coating is coated on base material, and it is lithographically formed on the cover layer
Void region, and force sensitive resistive material is coated in void region.
In the present invention, force sensing resistance layer is combined with touch display unit, and force sensing resistance layer is set
Between cover sheet and display unit, can be with adherence pressure response sensitivity, while can also realize press more
Power is recognized and positioning.Also make operation medium unrestricted by the way of force sensing resistance layer induction pressure.
Brief description of the drawings
The structural representation of the pressure sensitive unit that Fig. 1 is provided by one embodiment of the invention.
The structural representation of the pressure sensitive unit that Fig. 2 is provided by another embodiment of the present invention.
The schematic cross-section of the pressure sensitive unit that Fig. 3 and Fig. 4 is provided for different embodiments of the invention.
Pressure sensitive unit in the touch display unit that Fig. 5-Fig. 7 is provided by different embodiments of the invention with
The assembly structure diagram of touch sensing unit.
Pressure sensitive unit and touch in the touch display unit that Fig. 8 is provided by another embodiment of the present invention
The assembly structure diagram of sensing unit.
Fig. 9 is the schematic cross-section of part-structure in Fig. 8.
Specific embodiment
The touch display unit that the present invention is provided can be handed over as types such as mobile phone, panel computers with touch
The display terminal of mutual form.
The touch display unit includes that cover sheet, touch sensing unit, pressure sensitive unit and display are single
Unit.
Cover sheet can be strengthened glass cover plate, plastic cover plate, polymethyl methacrylate (PMMA)
Cover plate etc..
Touch sensing unit includes touching driving electrodes and touch sensible electrode.Touch driving electrodes and touch and feel
Answering electrode can be distributed on same base material, such as GF structures, GF2 structures alleged by industry etc., or respectively
Two different base materials are distributed in, such as the GFF structures alleged by industry.In some other embodiments, touch
Touching driving electrodes and touch sensible electrode can also be formed in the lower surface of cover sheet and cause that cover sheet is simultaneous
Has the function of capacitance sensor, this kind of structure is referred to as OGS structures by industry.Alleged by the present invention " on ", D score
Be for close with the user degree in application process of touch display unit, it is relatively close to use
The side of person for " on ", be relatively distant from user side be D score.The lower surface of such as cover sheet is
Refer to side of the cover sheet away from user.In some other embodiments, following set-up mode is can also be,
A kind of lower surface for being formed in cover sheet i.e. in two kinds of touch control electrodes, another kind can be formed in laminating
In the surface of a base material of cover sheet, such as the G1F structures alleged by industry.The touch sensing unit is also
May include flexible PCB and connection flexible PCB and touch driving electrodes, the guiding of touch sensible electrode
Electrode.
The display unit includes liquid crystal functional layer and backlight module, and the liquid crystal functional layer includes setting gradually
Upper polaroid, optical filter, liquid crystal layer, substrate and down polaroid, the backlight module includes blooming piece
With the protection sheet metal for protecting blooming piece.Blooming piece may include diffusion sheet, the leaded light for setting gradually
The structure such as plate and reflector plate.
In some other embodiments, touch driving electrodes and touch sensible electrode in touch sensing unit
Can integrate and be arranged in liquid crystal layer (structure of above-mentioned touch sensing unit is referred to as in-cell structures by industry), or
Driving electrodes are touched described in person and touch sensible electrode is arranged between upper polaroid and optical filter (above-mentioned touch
The structure of sensing unit is referred to as on-cell structures by industry).
The driving electrodes and touch sensible electrode of touching are used to sense the touch letter put on cover sheet
Number.The touch signal includes being touched parallel to the contact on the two-dimensional directional of cover sheet, slip, dragging etc.
Input signal is touched, or even including every empty input signal, (i.e. suspension touch control is believed on cover sheet direction
Number) or cover sheet edge side (for example bending the arc-shaped side edges of screen) touch input signal.
The pressure sensitive unit is arranged between cover sheet and display unit, and protection is put on for sensing
Pressure signal on cover plate.In certain embodiments, for example when touch sensing unit and cover sheet constitute industry
During the structures such as GF structures, GF2 structures or GFF structures alleged by boundary, or touch sensing unit is integrated and set
When putting formation in-cell structures or the on-cell structures in display unit, the pressure sensitive unit may be provided at
Between cover sheet and touch sensing unit.In other embodiment, for example when touch sensing unit with
When cover sheet constitutes the OGS structures alleged by industry, the structure such as GF structures, GF2 structures or GFF structures
When, the touch sensing unit may also be arranged between cover sheet and pressure sensitive unit.
As shown in figure 1, the pressure sensitive unit that one embodiment of the invention is provided includes base material 10, is formed in base
Multiple first electrodes 11 on the surface of material 10 1 and multiple second electrodes 12, and connect adjacent first,
The force sensing resistance layer 13 of second electrode 11,12, the force sensing resistance layer 13 includes insulating body and is dispersed in
Conductive particle in insulating body.
Force sensing resistance layer 13 is made up of quantum tunneling composite, can be the quick composite wood of power for mixing conductive particle
Material.Fine conductive even particulate dispersion in force sensing resistance layer 13 is in insulating body.Insulating body can be
The materials such as polyester fiber, epoxy resin, polyester, organosilicon, rubber are made.Insulating body can be transparent
, or it is nontransparent.Due to connecting the force sensing resistance layer of first, second adjacent electrode 11,12
13 can accomplish that naked eyes are invisible, even if thus the insulating body in force sensing resistance layer 13 be arranged on for nontransparent
Pressure sensitive unit between cover sheet and display unit will not also cause larger negative shadow in visual effect
Ring.It is to be appreciated that when insulating body is made of clear material, the light sent from display unit will not be by
Stop, light penetration can be improved.
The particle diameter of conductive particle is 10nm-0.1mm.Conductive particle can be made up of metal material, for example by gold,
Silver, copper, nickel etc. are processed into fine powder, sheet, foil-like, spherical, thorn-like, dendritic, wire, bar-shaped etc.
Shape, or be processed into metallic fiber shape, can also be that two or more metals such as gold, silver, copper, nickel are formed
The particle that processes of alloy.Conductive particle can also be made up of metallic salt material.Conductive particle also may be used
Think carbon black, graphite, can also be CNT, or conductive oxide such as tin indium oxide, oxidation
Indium, tin oxide, zinc oxide, titanium oxide etc., can also be metal clad material or macromolecular material.It is conductive
Particle can also be above two or various mixtures.
The pressure detecting principle of above-mentioned pressure sensitive unit is that, when force sensing resistance layer 13 is not stressed, power is quick
Conductive particle in resistive layer 13 is distant, and force sensing resistance layer 13 is in insulation or high resistance state；Work as power
When quick resistive layer 13 is stressed, insulating body is compressed, and the distance between conductive particle therein shortens, by
Electron transfer capabilities enhancing between quantum tunneling effect, conductive particle, so as to macroscopically be presented as power
The resistance value reduction of quick resistive layer 13.With the increase that is stressed of force sensing resistance layer 13, by its connected the
Resistance value between one electrode 11 and second electrode 12 is gradually reduced.Therefore, it can set up and touch display dress
Put electrode resistance change information in foregoing pressure sensitive unit and touch display unit by force information
Correlation database.In actual applications, memory and processor are also included in the touch display unit,
The diverse location in touch display unit that is stored with memory is carried out under different force value touches, is touched aobvious
The resistance variations information between adjacent first electrode, the second electrode of power is detected in showing device, processor is used for
The resistance variations information and the resistance variations being pre-stored of the adjacent electrode that contrast touch display unit detection is obtained
Information, so as to judge the touch information of touch display unit.Wherein touch information includes the size of the power for touching,
The position of touch force can also be included.
In one embodiment, when the touch sensing unit and pressure sensitive unit are simultaneously in running order,
If touch sensing unit and pressure sensitive unit detect touch operation event, the touch display unit is utilized
The touch sensing unit identification touch operation position, the touch display unit utilizes the pressure sensitive list
Unit's identification touch operation pressure；If the touch sensing unit is not detected by touch operation event and the pressure
When sensing unit detects touch operation event, the touch display unit is known using the pressure sensitive unit
Other touch operation position and touch operation pressure.
By setting multiple force sensing resistance layers 13 and multiple first, second electrodes 11,12, each force sensing resistance
Layer 13 is connected between first, second different electrodes 11,12, so that it may realize that multipoint pressure senses.
Further, as shown in fig. 1, the pressure sensitive unit also includes flexible PCB 14, first
The leading electrode 120 of leading electrode 110 and second.The flexible PCB 14 is arranged on the one of the base material 10
End, flexible PCB 14 shown in Fig. 1 is arranged on the upper end of base material 10.First leading electrode 110
It is arranged on the base material 10 and connects the first electrode 11 and flexible PCB 14, second guiding
Electrode 120 is arranged on the base material 10 and connects the second electrode 12 and flexible PCB 14.First
Leading electrode 110 extends and connected to flexible PCB 14, the second guiding from the respective end of first electrode 11
End of the electrode 110 from where corresponding second electrode 12 extends to flexible PCB on substrate 10 14 and with
Flexible PCB 14 is connected.By flexible PCB 14, the first leading electrode 110 and the second leading electrode
120 realize that external control circuit (mainboard) is connected with the loop between first electrode 11, second electrode 12,
Thus when the resistance between wherein one or more first electrodes 11, second electrode 12 changes, you can
Realize the real-time induction monitoring of pressure change.Wherein, the first leading electrode 110, the second leading electrode 120 with
The region of the connection of flexible PCB 14, can the extra silver paste of silk-screen again, with ensure the first leading electrode 110,
Second leading electrode 120 and the excellent contact of flexible PCB 14, prevent flexible PCB 14 and first
Leading electrode 110, the junction of the second leading electrode 120 are broken.
In a specific embodiment, the multiple first electrode 11 (is in the first direction y-axis side in Fig. 1
To) extend in strip, and the multiple first electrode 11 (is to be hung down with y-axis in Fig. 1 along second direction
Straight x-axis direction) it is intervally arranged.First electrode 11 has two relative long sides 111,113 and two
Relative end, one of end is electrically connected with flexible PCB 14.Each first electrode 11
One of long side 113, be arranged at intervals with multiple second electrodes 12.In these second electrodes 12, often
One second electrode 12 is connected by a force sensing resistance layer 13 with the first electrode 11.
As shown in Figure 2, in the structure and Fig. 1 of the pressure sensitive unit that another embodiment of the present invention is provided
The structure of shown pressure sensitive unit is essentially identical, and difference is that the force sensing resistance layer 13 is set
In two long sides 111,113 of first electrode 11, the force sensing resistance layer 13 positioned at long side 111 is connected
First electrode 11 and a corresponding second electrode 12, the force sensing resistance layer 13 positioned at long side 113 then connect
Connect first electrode 11 and corresponding another second electrode 12.By two long sides in first electrode 11
111st, 113 second electrode 12 of the connection of force sensing resistance layer 13 positioned at two long sides 111,113 is respectively provided with, can
To reduce the setting quantity of first electrode 11, the detection of the pressure effect of multiple positions is equally reached.
It is illustrated in figure 3 the sectional view of the part-structure of pressure sensitive unit shown in Fig. 1 and Fig. 2.Wherein
First, second electrode 11,12 is formed in the same surface of base material 10, and force sensing resistance layer 13 is re-formed in base
On the described same surface of material 10 and connect a corresponding first electrode 11 and a second electrode 12.
In a further embodiment, as shown in figure 4, the pressure sensitive unit may also include and be formed in base material
On 10 and cover first, second electrode 11,12 coating 15, in the coating 15 formed hollow out 150,
The force sensing resistance layer 13 is filled in the hollow out 150.
As shown in Figure 5, the touch display unit for being provided in an embodiment, pressure sensitive unit and touch are felt
Answering unit includes flexible PCB.It is clear each element annexation of explanation, by pressure sensitive unit
Flexible PCB is defined as the first flexible PCB 141, and the flexible PCB in touch sensing unit is defined as
Two flexible PCBs 142.Respective guide electrode in first flexible PCB 141 and pressure sensitive unit is tied up
Determine one ends of the area 141a positioned at cover sheet, the phase in the second flexible PCB 142 and touch sensing unit
The binding area 142a of leading electrode is answered positioned at the other end of cover sheet.Namely first flexible PCB
141 and second flexible PCB 142 binding area be located at cover sheet different ends.
Pressure sensitive unit and touch sensing unit can be bonded together with transparent optical cement.Pressure sensitive unit
Can be connected with mainboard respectively with the flexible PCB in touch sensing unit, it is also possible to as shown in Figure 6,
Linked together by connector 143 before being connected to mainboard.In a further embodiment, such as institute in Fig. 7
Show, it would however also be possible to employ different branch for flexible PCB 14 respectively with pressure sensitive unit and touch sensible
Leading electrode binding in unit.
Fig. 5-embodiment illustrated in fig. 7 is located at protection cap for the binding area of pressure sensitive unit and touch sensing unit
The different ends of plate, in some other embodiments, the binding area of pressure sensitive unit and touch sensing unit
May be alternatively located at same one end of cover sheet.As shown in figs. 8 and 9, the touch that an embodiment is provided shows
Device includes cover sheet 300, touch sensing unit 200 and pressure sensitive unit 100, touch sensing unit
200 are arranged between cover sheet 300 and pressure sensitive unit 100, and pass through transparent optical cement between any two
101st, 301 bond together.The touch sensing unit 200 opens up a window 201, flexible PCB 14
While binding with touch sensing unit 200, also extend through window 201 and be connected with pressure sensitive unit 100.
That is, the different branches of flexible PCB 14 are (in other embodiment, or two independent flexible electricals
Road plate) it is located at the same of cover sheet 300 with the binding area of pressure sensitive unit 100, touch sensing unit 200
One end.
The present invention also provides a kind of preparation method of pressure sensitive unit, and its step includes：
First, there is provided base material；Base material can be by the organic films such as PET, PEN, COP or ultra-thin glass
The transparent materials such as glass are constituted.
Then, multiple first electrodes and multiple second electrodes of patterning are formed on a surface of base material.The
One electrode and second electrode can be ITO, development, CNT, Graphene, PEDOT, IZO
Transparent conductive material is formed by modes such as coating/sputters on substrate surface Deng material, it is then etched with shape
Into the first electrode and second electrode of predetermined pattern.In this step, first electrode, second can also be formed
The leading electrode that electrode is attached with flexible PCB.It is appreciated that leading electrode can also be by follow-up
Made step by step in step and formed.
Then, force sensing resistance layer, the force sensing resistance layer connection first electrode and the second electricity are made on substrate
Pole.
In one embodiment, for example when making the pressure sensitive unit of structure as shown in Figure 3, can be by coating
Mode force sensitive resistive material is coated on base material, can be coat whole base material surface, or
Coat the regional area of base material.Then again through steps such as overexposure, developments forming connection first electrode and the
The force sensing resistance layer of two electrodes.Force sensitive resistive material can by foregoing insulating body, conductive particle, with
And the modulation such as solvent, curing agent forms ink state, and can be realized by way of being heating and curing or UV irradiates
Solidification.Solvent can be that common are the one kind in machine solvent such as 2- butanone, glycol ether and tetrahydrofuran
Or more combination.Type according to insulating body also may be selected the curing agent such as aliphatic amine of suitable type
Class, amide groups amine etc..
In some other embodiments, such as when making the pressure sensitive unit of structure as shown in Figure 4, can
Coating is coated on base material, and is lithographically formed void region on the cover layer.Then again using the side of coating
Formula coats force sensitive resistive material in void region, finally to form force sensing resistance layer in void region.
In some other embodiments, can also be by modes such as silk-screen, inkjet printings in commitment positions shape
Into force sensing resistance layer.
In the present invention, force sensing resistance layer is combined with touch display unit, and force sensing resistance layer is set
Between cover sheet and display unit, can be with adherence pressure response sensitivity, while can also realize press more
Power is recognized and positioning.
Each technical characteristic of embodiment described above can be combined arbitrarily, not right to make description succinct
The all possible combination of each technical characteristic in above-described embodiment is all described, as long as however, these skills
The combination of art feature does not exist contradiction, is all considered to be the scope of this specification record.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed,
But can not therefore be construed as limiting the scope of the patent.It should be pointed out that for this area
For those of ordinary skill, without departing from the inventive concept of the premise, some deformations can also be made and changed
Enter, these belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended power
Profit requires to be defined.
Claims (11)
1. a kind of pressure sensitive unit, it is characterised in that including base material, be formed in it is many on the surface of base material one
Individual first electrode and multiple second electrodes, and the force sensing resistance layer of first, second adjacent electrode is connected,
The force sensing resistance layer includes insulating body and the conductive particle being dispersed in insulating body.
2. pressure sensitive unit according to claim 1, it is characterised in that the grain of the conductive particle
Footpath is 10nm~0.1mm, and the conductive particle is metal material, metallic salt material, carbon black materials, metal
Covering material, one or more in macromolecular material, the insulating body is silica gel or resin.
3. pressure sensitive unit according to claim 1, it is characterised in that also including being formed in base material
The coating of first, second electrode is gone up and covered, hollow out, the force sensing resistance layer are formed in the coating
It is filled in the hollow out.
4. pressure sensitive unit according to claim 1, it is characterised in that the multiple first electrode
Extend in a first direction in strip, and the multiple first electrode is intervally arranged along second direction；It is each
The multiple second electrode of long side interval setting of first electrode.
5. pressure sensitive unit according to claim 4, it is characterised in that the force sensing resistance layer sets
Put a long side in first electrode, and connect the first electrode and to be arranged on first electrode accordingly long
The second electrode of side；Or the force sensing resistance layer is arranged on two long sides of first electrode, and connection
The first electrode and it is arranged on two second electrodes of long side of first electrode.
6. pressure sensitive unit according to claim 4, it is characterised in that also including flexible PCB,
First leading electrode and the second leading electrode, the flexible PCB are arranged on one end of the base material, described
First leading electrode sets on the substrate and connects the first electrode and flexible PCB, described second
Leading electrode sets on the substrate and connects the second electrode and flexible PCB.
7. a kind of touch display unit, including cover sheet, touch sensing unit, pressure sensitive unit and aobvious
Show unit, the touch sensing unit is used to sense the touch signal put on cover sheet, the pressure
Sensing unit is used to sense the pressure signal put on cover sheet, it is characterised in that the pressure sensitive
Unit is the pressure sensitive unit described in any one in claim 1-5, and the pressure sensitive unit sets
Put between cover sheet and display unit.
8. touch display unit according to claim 7, it is characterised in that the pressure sensitive unit
It is arranged between cover sheet and touch sensing unit, or the touch sensing unit is arranged on cover sheet
Between pressure sensitive unit.
9. touch display unit according to claim 7, it is characterised in that the pressure sensitive unit
Including the first flexible PCB, the touch sensing unit includes the second flexible PCB, and described first is flexible
The binding area of circuit board and the second flexible PCB is located at the different ends of cover sheet.
10. touch display unit according to claim 7, it is characterised in that the touch sensible list
Unit is arranged between cover sheet and pressure sensitive unit, and the touch sensing unit opens up a window, described
Touch display unit also includes flexible PCB, and the flexible PCB is connected with touch sensing unit while wearing
Window is crossed to be connected with pressure sensitive unit.
A kind of 11. preparation methods of pressure sensitive unit, its step includes：
Base material is provided；
Multiple first electrodes and multiple second electrodes of patterning are formed on a surface of base material；And
Force sensing resistance layer, force sensing resistance layer connection first electrode and the second electrode, system are made on base material
The step of making force sensing resistance layer is included in coating on base material and forms force sensitive resistive material, and through exposure and development；
Or the step of making force sensing resistance layer is included in and coating is coated on base material, and it is lithographically formed on the cover layer
Void region, and force sensitive resistive material is coated in void region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510790343.7A CN106708308A (en) | 2015-11-17 | 2015-11-17 | Touch display device, pressure induction unit and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510790343.7A CN106708308A (en) | 2015-11-17 | 2015-11-17 | Touch display device, pressure induction unit and manufacturing method thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510790343.7A Pending CN106708308A (en) | 2015-11-17 | 2015-11-17 | Touch display device, pressure induction unit and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021092785A1 (en) * | 2019-11-13 | 2021-05-20 | 南昌欧菲显示科技有限公司 | Tactile feedback module, touch screen, keyboard, and electronic device |
-
2015
- 2015-11-17 CN CN201510790343.7A patent/CN106708308A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021092785A1 (en) * | 2019-11-13 | 2021-05-20 | 南昌欧菲显示科技有限公司 | Tactile feedback module, touch screen, keyboard, and electronic device |
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