CN106406588A - Touch control display device - Google Patents
Touch control display device Download PDFInfo
- Publication number
- CN106406588A CN106406588A CN201510445986.8A CN201510445986A CN106406588A CN 106406588 A CN106406588 A CN 106406588A CN 201510445986 A CN201510445986 A CN 201510445986A CN 106406588 A CN106406588 A CN 106406588A
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- CN
- China
- Prior art keywords
- touch control
- flexible pcb
- control display
- force transducer
- display apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002131 composite material Substances 0.000 claims description 9
- 239000010408 film Substances 0.000 claims description 8
- 239000010409 thin film Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 7
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- SEWHDNLIHDBVDZ-UHFFFAOYSA-N 1,2,3-trichloro-4-(2-chlorophenyl)benzene Chemical compound ClC1=C(Cl)C(Cl)=CC=C1C1=CC=CC=C1Cl SEWHDNLIHDBVDZ-UHFFFAOYSA-N 0.000 description 7
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- 238000002955 isolation Methods 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to a touch control display device. The touch control display device includes a protection cover plate, a capacitor touch control unit and a display module which are positioned at one side of the protection cover plate; the capacitor touch control unit is used for acquiring position information of a touch control object; the touch control display device also includes a pressure touch control unit positioned at one side away from the protection cover plate, of the display module; the pressure touch control unit is used for acquiring pressure information of the touch control object; and the pressure touch control unit includes a flexible circuit board and a plurality of force sensors. The force sensors are integrated on a back surface of the display module, the force sensor are arranged on the flexible circuit board, and positioning detection and pressure detection can be combined; and the touch control display device is simple and compact in structure, and can improve the hand feeling of man-machine interaction experience.
Description
Technical field
The present invention relates to display technology field, the touch-control display dress of more particularly to a kind of tool pressure sensitive function
Put.
Background technology
At present, intelligent terminal's such as product such as mobile phone, panel computer, television set with touch controllable function is more next
Extensively favored manyly.The touch controllable function of these products is all to be realized according to this by arranging touch screen.
Current touch screen adopts capacitive touch screen mostly, and capacitive touch screen is the electric current sense using human body
Should be operated, touching must be carried out with the object of conductive material and could operate, if user band is set about
Cover or operated with the object of isolation material, then cannot realize touch operation.
Content of the invention
Based on this, the present invention is intended to provide a kind of touch screen that can realize isolation material touch operation.
A kind of touch control display apparatus, including cover sheet, and the capacitance touching control list being located at cover sheet side
Unit and display module, described capacitive touch control unit is used for obtaining the positional information of touch object, also includes being located at
Away from the pressure touch unit of the side of cover sheet, described pressure touch unit is used for obtaining tactile display module
The pressure information of control object, described pressure touch unit includes flexible PCB and is arranged on flexible PCB
On multiple force transducers.
The present invention passes through in the integrated force transducer in the back side of display module, and force transducer is placed in flexible PCB
On, realize the combination that position is detected with pressure dual, simple and compact for structure, man-machine interaction experience handss can be improved
Sense.
Wherein in an embodiment, described force transducer is piezoelectric transducer, including piezoelectric membrane and setting
Contact conductor is arranged on the electrode of piezoelectric membrane both sides, described flexible PCB, described electrode passes through conduction
Glue is bonding with contact conductor.
Wherein in an embodiment, described force transducer is piezoelectric transducer, including piezoelectric membrane, described
Setting electrode and the corresponding contact conductor being electrically connected with these electrodes on flexible PCB, described piezoelectric membrane leads to
Cross conducting resinl and the electrode pair on flexible PCB answer bonding.
Wherein in an embodiment, described force transducer is strain force sensor, including metal strain meter
Or semiconductor strain gauge, described semiconductor strain gauge or metal strain meter pass through conducting resinl and flexible circuit plate shape
Become electrical connection, semiconductor strain gauge or metal strain meter can be deformed thus resistance can become by pressure
Change.
Wherein in an embodiment, described force transducer is resistance-type force transducer, including mixing conductive particle
Organic composite material thin film and be located at composite material film surface electrode, when pressurized, composite wood
Resistance between the electrode of material thin film changes.
Wherein in an embodiment, described flexible PCB is bar shaped, shaped as frame or block shape.
Wherein in an embodiment, described display module include visible area and be located at visible area periphery non-can
Vision area, described force transducer is placed in the non-visible area of display module.
Wherein in an embodiment, described force transducer is located between flexible PCB and display module.
Wherein in an embodiment, described pressure touch unit also includes the fortune being arranged on flexible PCB
Calculate chip.
Brief description
The schematic diagram of the touch control display apparatus that Fig. 1 provides for one embodiment of the invention.
Fig. 2 is the overlooking the structure diagram of the pressure touch unit in touch control display apparatus shown in Fig. 1.
The structural representation of the touch control display apparatus that Fig. 3 provides for another embodiment of the present invention.
The structural representation of the touch control display apparatus that Fig. 4 provides for further embodiment of this invention.
Fig. 5 and Fig. 6 is respectively flexible PCB in the pressure touch unit that different embodiments of the invention provide
Structural representation.
Specific embodiment
As shown in fig. 1, the touch control display apparatus that one embodiment of the invention provides, include from top to bottom successively
Cover sheet 10, capacitive touch control unit 20, display module 30, and pressure touch unit 40.
Cover sheet 110 can be strengthens glass cover plate, plastic cover plate, polymethyl methacrylate (PMMA)
Cover plate etc..
Capacitive touch control unit 20 includes multiple drive electrodes and induction electrode, and both touch control electrode can be distributed
In same base material, or it is distributed in two different base materials respectively, i.e. capacitive touch control unit 20 and cover sheet 10
The structures such as GF, GFF or OGS alleged by industry can be formed as.Touch control electrode leads to one by silver paste
Place, and bound by the flexible printed circuit board of anisotropic conductive (ACF) and capacitive touch control unit 20,
The chip of capacitive touch control unit 20 may be on flexible printed circuit board or touch control display apparatus (such as mobile phone)
Mainboard on.Capacitive touch control unit 20 can be detected by capacity coupled mode and obtain multiple touch object
Precise position information.
Display module 30 is arranged on the side away from cover sheet 10 for the capacitive touch control unit 20.It is appreciated that
In some embodiments, display module 30 can be integrated with capacitive touch control unit 20 and be set together.
Pressure touch unit 40 is arranged on the side away from cover sheet 10 for the display module 30.Described pressure touches
Control unit 40 is used for obtaining the pressure information of touch object.Described pressure touch unit 40 includes flexible circuit
Plate 41 and be arranged on the multiple force transducers on flexible PCB 41.
As shown in Figures 1 and 2, force transducer is piezoelectric transducer, includes piezoelectric membrane 42 and is arranged on
The electrode 421,422 of piezoelectric membrane 42 both sides, on described flexible PCB 41 setting contact conductor 411,
412, it is bonding with contact conductor 411,412 that described electrode 421,422 passes through conducting resinl 60.
The schematic diagram of the touch control display apparatus that Fig. 3 provides for another embodiment of the present invention, its force transducer is pressure
Electric transducer, including piezoelectric membrane 42 and the electrode 421,422 being arranged on piezoelectric membrane 42 both sides.Described
Flexible printed circuit board 41 includes base material 413, lower base material 411 and sealing coat 70 and constitutes, in upper base material
413 lower surface is provided with contact conductor (not shown), and passes through conducting resinl 60 with the electrode 421 of piezoelectric membrane
Form electrical connection, there is contact conductor, and the electrode 422 with piezoelectric membrane in the upper surface of lower base material 411
Electrical connection is formed by conducting resinl 60.The acting as of sealing coat 70 prevents base material 43 and lower base material 41
The contact conductor on surface is short-circuited.Meanwhile, the non-piezoelectric thin membrane regions in flexible printed circuit board, lead to
Cross the mode of through hole, the contact conductor of upper base material 413 guided to the surface of lower base material 411, in order to
External equipment is electrically connected.
As shown in figure 4, in another embodiment, described electrode 421,422 can directly be formed respectively respectively
On the upper base material 413 and lower base material 411 of flexible printed circuit board 41, and connect with corresponding contact conductor.
The relative two sides of the piezoelectric membrane 42 of described piezoelectric force transducer passes through conducting resinl 60 and upper base material respectively
Electrode 421 on 413 and the electrode 422 on lower base material 411 bond.
When piezoelectric transducer stress, the both sides up and down of piezoelectric membrane 42 can produce charge inducing, by sense
The detection answering electric charge is realized touching the detection of the size of power of object.
In certain embodiments, described pressure touch unit 40 also includes being arranged on flexible PCB 41
Computing chip (not shown).When piezoelectric membrane 42 stress, its upper and lower both side surface produces charge inducing,
Charge signal transmission is carried out by upper/lower electrode 421,422, and passes through conducting resinl 60, and flexible PCB
Respective lines in 41 are transmitted to processing apparatus such as computing chips, can signal be carried out processing, change, and set up
Touch pressure and the corresponding relation of signal.
In other embodiments, described force transducer is alternatively other types, and for example described force transducer is should
Variant force transducer, resistance-type force transducer.When for strain force sensor, described force transducer is permissible
It is metal strain meter or semiconductor strain gauge.Such as semiconductor strain gauge includes semiconductive thin film and is produced on half
Resistor stripe on conductor thin film, described resistor stripe is passed through conducting resinl and is electrically connected with flexible PCB formation.Partly lead
Body thin film can be silicon thin film or germanium film etc..Resistor stripe can be produced on semiconductor film by semiconductor technology
On film.Circuit in resistor stripe itself, or resistor stripe and flexible PCB can form testing circuit.When should
Deform upon when variant force transducer is by external force, thus leading to resistance to change, and then can be by detection electricity
The change of resistance, or the corresponding relation of the change in voltage foundation in testing circuit and touch pressure, thus realize
Touch the detection of the size of power of object.When described force transducer is by the organic composite material mixing conductive particle
During the resistance-type force transducer that thin film is constituted, there is electrode it is possible to pass through to lead in the surface of composite material film
The modes such as electric glue, evaporation, silk-screen and flexible PCB form electrical connection.Vertical when being subject in force transducer
When the pressure of material, the resistance value of the resistance constituting between the surface electrode of composite material film can become
Change, the change that therefore can pass through detection resistance realizes the pressure putting on force transducer is measured.
In certain embodiments, the flexible PCB 41 of described pressure touch unit 40 and capacitive touch control unit
Flexible printed circuit board in 20 can share, thus improving the degree of integration of whole touch control display apparatus, thinning
Touch control display apparatus.
The flexible PCB 41 of described pressure touch unit 40 can be block shape as shown in Figure 2, also may be used
To be bar shaped as shown in Figure 5, can also be the ring-type shown in Fig. 6 simultaneously.Force transducer can be arranged
Multiple positions in flexible PCB 41.In certain embodiments, described display module 30 includes visible area
With the non-visible area positioned at visible area periphery, described force transducer is placed in the non-visible area of display module 30.Institute
State in flexible PCB and can contain multiple force transducers, such as 1-8.
As shown in fig. 1, described force transducer is located between flexible PCB 41 and display module 30.Institute
State force transducer by the optical cements such as common glue such as OCA 50 and display module 30 fixed bonding.
The present invention passes through in the integrated force transducer in the back side of display module, and force transducer is placed in flexible PCB
On, realize the combination that position is detected with pressure dual, simple and compact for structure, man-machine interaction experience handss can be improved
Sense.
The touch control display apparatus of the present invention can be used for the products such as mobile phone, panel computer, television set.
Each technical characteristic of embodiment described above can arbitrarily be combined, for making description succinct, not right
The all possible combination of each technical characteristic in above-described embodiment is all described, as long as however, these skills
There is not contradiction in the combination of art feature, be all considered to be the scope of this specification record.
Embodiment described above only have expressed the several embodiments of the present invention, and its description is more concrete 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, can also make and some deform and change
Enter, these broadly fall into 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 (9)
1. a kind of touch control display apparatus, including cover sheet, and the capacitance touching control being located at cover sheet side
Unit and display module, described capacitive touch control unit is used for obtaining the positional information of touch object, and its feature exists
In also including the pressure touch unit away from the side of cover sheet, described pressure touch positioned at display module
Unit is used for obtaining the pressure information of touch object, and described pressure touch unit includes flexible PCB and sets
Put the multiple force transducers on flexible PCB.
2. touch control display apparatus according to claim 1 are it is characterised in that described force transducer is pressure
Electric transducer, including piezoelectric membrane and the electrode being arranged on piezoelectric membrane both sides, described flexible PCB sets
Put contact conductor, it is bonding with contact conductor that described electrode passes through conducting resinl.
3. touch control display apparatus according to claim 1 are it is characterised in that described force transducer is pressure
Electric transducer, including piezoelectric membrane, setting electrode and these electricity of corresponding electric connection on described flexible PCB
The contact conductor of pole, described piezoelectric membrane is answered bonding by conducting resinl and the electrode pair on flexible PCB.
4. touch control display apparatus according to claim 1 are it is characterised in that described force transducer is should
Variant force transducer, including metal strain meter or semiconductor strain gauge, described semiconductor strain gauge or metal should
Become meter to electrically connect with flexible PCB formation by conducting resinl, semiconductor strain gauge or metal strain meter are pressurized
Under can be deformed thus resistance can change.
5. touch control display apparatus according to claim 1 are it is characterised in that described force transducer is electricity
Resistive force transducer, including the organic composite material thin film mixing conductive particle and be located at composite material film
The electrode on surface, when pressurized, the resistance between the electrode of composite material film changes.
6. touch control display apparatus according to claim 1 are it is characterised in that described flexible PCB is
Bar shaped, shaped as frame or block shape.
7. touch control display apparatus according to claim 1 are it is characterised in that described display module includes
Visible area and the non-visible area being located at visible area periphery, described force transducer is placed in the non-visible area of display module.
8. touch control display apparatus according to claim 1 are it is characterised in that described force transducer is located at
Between flexible PCB and display module.
9. touch control display apparatus according to claim 1 are it is characterised in that described pressure touch unit
Also include the computing chip being arranged on flexible PCB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510445986.8A CN106406588A (en) | 2015-07-27 | 2015-07-27 | Touch control display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510445986.8A CN106406588A (en) | 2015-07-27 | 2015-07-27 | Touch control display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106406588A true CN106406588A (en) | 2017-02-15 |
Family
ID=58009533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510445986.8A Pending CN106406588A (en) | 2015-07-27 | 2015-07-27 | Touch control display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106406588A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107145254A (en) * | 2017-03-24 | 2017-09-08 | 江西合力泰科技有限公司 | Bio-identification module with pressure inducing function |
| CN107591428A (en) * | 2017-09-13 | 2018-01-16 | 武汉华星光电半导体显示技术有限公司 | The device and method that flexible OLED panel is fitted on curved surface cover plate |
| CN109600488A (en) * | 2017-09-30 | 2019-04-09 | 南昌欧菲生物识别技术有限公司 | Housing unit and electronic device |
| CN112436046A (en) * | 2020-11-27 | 2021-03-02 | 武汉华星光电半导体显示技术有限公司 | Foldable display device and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107591428B (en) * | 2017-09-13 | 2020-02-07 | 武汉华星光电半导体显示技术有限公司 | Device and method for attaching flexible OLED panel to curved cover plate |
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| CN112436046A (en) * | 2020-11-27 | 2021-03-02 | 武汉华星光电半导体显示技术有限公司 | Foldable display device and preparation method thereof |
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