CN105930019B - A kind of touch screen and display device - Google Patents
A kind of touch screen and display device Download PDFInfo
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- CN105930019B CN105930019B CN201610515976.1A CN201610515976A CN105930019B CN 105930019 B CN105930019 B CN 105930019B CN 201610515976 A CN201610515976 A CN 201610515976A CN 105930019 B CN105930019 B CN 105930019B
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- touch
- electrode
- driving electrodes
- touch screen
- pressure sensitive
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- 230000006698 induction Effects 0.000 claims abstract description 63
- 239000000758 substrate Substances 0.000 claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims abstract description 8
- 230000005684 electric field Effects 0.000 claims description 28
- 239000010409 thin film Substances 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 22
- 229920002120 photoresistant polymer Polymers 0.000 claims description 3
- 238000003825 pressing Methods 0.000 abstract description 20
- 230000036410 touch Effects 0.000 description 222
- 239000010408 film Substances 0.000 description 11
- 230000003287 optical effect Effects 0.000 description 7
- 239000013078 crystal Substances 0.000 description 6
- 230000005611 electricity Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000010897 surface acoustic wave method Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- 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
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses a kind of touch screen and display device, which includes underlay substrate and capacitive sensing module, pressure sensitive module and touch chip on underlay substrate；Capacitive sensing module includes touch driving electrodes and touch sensible electrode arranged in a crossed manner；Pressure sensitive module and touch driving electrodes are electrically connected, and/or, piezoelectricity induction module and touch sensible electrode are electrically connected；Touch chip is electrically connected with touch driving electrodes and touch sensible electrode respectively, touch chip determines touch location for touching the capacitor between driving electrodes and touch sensible electrode by detection when touch screen is touched, and touches the capacitance between driving electrodes and touch sensible electrode by detection when pressure sensitive module position is pressed and determines pressure size.The touch screen can incude touching position information, and can incude the size of pressing dynamics, to make a response to any touching object, and different feedbacks be provided according to the size of pressing dynamics.
Description
Technical field
The present invention relates to technical field of touch control, espespecially a kind of touch screen and display device.
Background technique
With the rapid development of display technology, touch screen (Touch Screen Panel) has gradually spread the life of people
In work.Currently, touch screen can be divided into according to working principle: resistance-type, condenser type, infrared-type and surface acoustic wave type, electricity
Magnetic-type, shake ripple induction type and frustrated total internal reflection optical induction type etc..Wherein, capacitive touch screen is former with its unique touch-control
The advantages that managing, relying on high sensitivity, long-life, high transparency, is pursued in the industry as new lover.
Current most widely used touch screen is capacitive touch screen.Capacitance touching control supports multi-touch function, possesses
Higher light transmittance, lower overall power, contact surface hardness is high, and without pressing, service life is longer.But capacitance touch
Screen can not perceive pressing dynamics, i.e., can not provide feedback according to the size of user's pressing dynamics.
Summary of the invention
The embodiment of the present invention provides a kind of touch screen and display device, to solve capacitive touch existing in the prior art
Pressing dynamics problem can not be perceived by touching screen.
The embodiment of the invention provides a kind of touch screens, the capacitor including underlay substrate and on the underlay substrate
Induction module, pressure sensitive module and touch chip；
The capacitive sensing module includes touch driving electrodes and touch sensible electrode arranged in a crossed manner；
The pressure sensitive module and the touch driving electrodes are electrically connected, and/or, the piezoelectricity induction module and institute
State the electric connection of touch sensible electrode；
The touch chip is electrically connected with the touch driving electrodes and the touch sensible electrode respectively, the touch-control
Chip is used for when the touch screen is touched by detecting between the touch driving electrodes and the touch sensible electrode
Capacitor determines touch location, when pressure sensitive module position is pressed by detect the touchs driving electrodes with
Capacitance between the touch sensible electrode determines pressure size.
In a kind of possible embodiment, in above-mentioned touch screen provided in an embodiment of the present invention, the pressure sensitive mould
Block includes the thin film transistor (TFT) at the crossover location of the touch driving electrodes and the touch sensible electrode；
The touch sensible electrode disconnects at the position that the thin film transistor (TFT) is arranged；
One end of the source electrode of the thin film transistor (TFT) and the touch sensible electrode is electrically connected, the thin film transistor (TFT)
The other end of drain electrode and the touch sensible electrode is electrically connected, the grid of the thin film transistor (TFT) and the touch driving electrodes
It is electrically connected；
The grid is located on the touch driving electrodes and for piezoelectric material, the deformation direction of the grid and positive and negative
The shift direction of an electric field of generation of charge-site is parallel to each other and contrary.
In a kind of possible embodiment, in above-mentioned touch screen provided in an embodiment of the present invention, the capacitive sensing mould
Block and the pressure sensitive module are set to the inside of the touch screen.
In a kind of possible embodiment, in above-mentioned touch screen provided in an embodiment of the present invention, the pressure sensitive mould
Block includes: the multiple piezoelectricity induction electrodes to connect one to one with the touch driving electrodes；
Each piezoelectricity induction electrode is for increasing connection when being pressed at the position where the piezoelectricity induction electrode
The touch driving electrodes voltage.
In a kind of possible embodiment, in above-mentioned touch screen provided in an embodiment of the present invention, each voltage inductance is answered
The touch driving electrodes are arranged in close to the side of touch-control surface in electrode, and each piezoelectricity induction electrode is in the underlay substrate
On orthographic projection be located at connection touch driving electrodes region in；
The deformation direction and positive and negative charge center of the piezoelectricity induction electrode shift generation direction of an electric field it is mutually flat
It is capable and contrary.
In a kind of possible embodiment, in above-mentioned touch screen provided in an embodiment of the present invention, each voltage inductance is answered
Electrode is also electrically connected with the neighbouring touch sensible electrode respectively；
The deformation direction and positive and negative charge center of the piezoelectricity induction electrode shift generation direction of an electric field mutually hang down
Directly, and the direction of an electric field is the direction that the touch sensible electrode of connection is directed toward from the touch driving electrodes of connection.
In a kind of possible embodiment, in above-mentioned touch screen provided in an embodiment of the present invention, the pressure sensitive mould
Block includes the multiple piezoelectricity induction electrodes to connect one to one with the touch sensible electrode；
The side of the touch sensible electrode far from touch-control surface, each piezoelectricity is arranged in each piezoelectricity induction electrode
Induction electrode is in the touch sensible electrode region that the orthographic projection on the underlay substrate is located at connection；
The deformation direction and positive and negative charge center of the piezoelectricity induction electrode shift generation direction of an electric field it is mutually flat
It is capable and contrary.
In a kind of possible embodiment, in above-mentioned touch screen provided in an embodiment of the present invention, the pressure sensitive electricity
The material of pole is transparent piezoelectric material.
In a kind of possible embodiment, in above-mentioned touch screen provided in an embodiment of the present invention, the capacitive sensing mould
Block and the pressure sensitive module are set to the display surface of the touch screen.
In a kind of possible embodiment, in above-mentioned touch screen provided in an embodiment of the present invention, in the pressure sensitive
Supporting layer is provided between module and the display surface of the touch screen.
In a kind of possible embodiment, in above-mentioned touch screen provided in an embodiment of the present invention, the supporting layer and institute
State pressure sensitive electrode pattern is consistent or supporting layer flood setting.
In a kind of possible embodiment, in above-mentioned touch screen provided in an embodiment of the present invention, the material of the supporting layer
Material is negative photoresist.
The embodiment of the invention also provides a kind of display devices, including above-mentioned touch screen.
The present invention has the beneficial effect that:
A kind of touch screen provided in an embodiment of the present invention and display device, the touch screen include underlay substrate and be located at lining
Capacitive sensing module, pressure sensitive module and touch chip on substrate；Capacitive sensing module includes touching arranged in a crossed manner
Touch driving electrodes and touch sensible electrode；Pressure sensitive module and touch driving electrodes are electrically connected, and/or, voltage inductance Ying Mo
Block and touch sensible electrode are electrically connected；Touch chip is electrically connected with touch driving electrodes and touch sensible electrode respectively, touching
It controls chip and determines touching for touching the capacitor between driving electrodes and touch sensible electrode by detection when touch screen is touched
Position is touched, is touched between driving electrodes and touch sensible electrode when pressure sensitive module position is pressed by detection
Capacitance determines pressure size.The touch screen can not only incude touching position information, but also can incude the size of pressing dynamics,
So as to make a response to any touching object, and different feedbacks can be provided according to the size of pressing dynamics.
Detailed description of the invention
Fig. 1 is the positional diagram of capacitive sensing module and pressure sensitive module that embodiment of the present invention provides；
Fig. 2 is the sectional view of Fig. 1 in the X direction；
Fig. 3 is the sectional view of Fig. 1 in the Y direction；
Fig. 4 is the stress of the piezoelectric material in different film forming directions and the schematic diagram in the direction for generating electric field；
Fig. 5 is a kind of one of the structural schematic diagram for display screen that embodiment of the present invention provides；
Fig. 6 is the sectional view of display screen shown in Fig. 4；
Fig. 7 is a kind of second structural representation for display screen that embodiment of the present invention provides；
Fig. 8 is a kind of third structural representation for display screen that embodiment of the present invention provides；
Fig. 9 is the sectional view of display screen shown in Fig. 7；
Figure 10 is a kind of sectional view for display screen that embodiment of the present invention provides.
Specific embodiment
Aiming at the problem that capacitive touch screen existing in the prior art can not perceive pressing dynamics, the embodiment of the present invention is mentioned
A kind of touch screen and display device are supplied.
The embodiment of the invention provides a kind of touch screens, the capacitive sensing including underlay substrate and on underlay substrate
Module, pressure sensitive module and touch chip；
Capacitive sensing module includes touch driving electrodes and touch sensible electrode arranged in a crossed manner；
Pressure sensitive module and touch driving electrodes are electrically connected, and/or, piezoelectricity induction module and touch sensible electrode electricity
Property connection；
Touch chip is electrically connected with touch driving electrodes and touch sensible electrode respectively, and touch chip is used in touch screen
The capacitor between driving electrodes and touch sensible electrode is touched by detection when being touched and determines touch location, in pressure sensitive mould
The capacitance between driving electrodes and touch sensible electrode is touched by detection when block position is pressed and determines pressure size.
The touch screen that embodiment of the present invention provides, pressure sensitive module and touch driving electrodes are electrically connected, and/or,
Piezoelectricity induction module and touch sensible electrode are electrically connected, and when the touch screen is touched, touch chip is touched by detection and driven
Capacitor between moving electrode and touch sensible electrode determines touch location, and when the touch screen is pressed, and touch chip is logical
It crosses the capacitance that detection touches between driving electrodes and touch sensible electrode and determines pressure size.The touch that present embodiment provides
Screen can not only incude touching position information, but also can incude the size of pressing dynamics, so as to make to any touching object
It responds out, and different feedbacks can be provided according to the size of pressing dynamics.
Above-mentioned capacitive sensing module includes touch driving electrodes and touch sensible electrode arranged in a crossed manner, touches driving electrodes
It is preferably square crossing setting with touch sensible electrode.In the specific implementation, touch chip applies to touch driving electrodes respectively
Driving signal and to touch sensible electrode apply inductive signal, and by detection touch driving electrodes and touch sensible electricity
The output signal of pole, thus obtain touching the capacitance variations between driving electrodes and touch sensible electrode, in the specific implementation, touching
Control chip can be different by the time point for touching with pressing, or the order of magnitude of the capacitance variations by touching and pressing generation
Difference is come to distinguish the touch screen be to be touched or be pressed.
Fig. 1 is the positional diagram of capacitive sensing module and pressure sensitive module that embodiment of the present invention provides,
Fig. 2 is the sectional view of Fig. 1 in the X direction, and Fig. 3 is the sectional view of Fig. 1 in the Y direction.
Referring to Fig. 1, pressure sensitive module includes positioned at the crossover location for touching driving electrodes 11 and touch sensible electrode 12
The thin film transistor (TFT) 21 at place；
Touch sensible electrode 12 disconnects at the position of setting thin film transistor (TFT) 21, as shown in Figure 3；
One end of the source electrode of thin film transistor (TFT) 21 and touch sensible electrode 12 is electrically connected, the drain electrode of thin film transistor (TFT) 21 and
The other end of touch sensible electrode 12 is electrically connected, and the grid and touch driving electrodes 11 of thin film transistor (TFT) 21 are electrically connected；
Grid, which is located at, to be touched on driving electrodes 11 and is piezoelectric material, the deformation direction of grid and positive and negative charge center hair
The direction of an electric field that raw offset generates is parallel to each other and contrary.
Touch driving electrodes 11 shown in fig. 1 and touch sensible electrode 12 are square crossing setting, and touch driving electricity
Pole 11 is parallel with the grid line 32 of sub-pixel unit, 31 square crossing of data (data) line with sub-pixel unit, touch sensible
Electrode 12 is parallel with the data line 31 of sub-pixel unit, parallel with the grid line 32 of sub-pixel unit, and shown in fig. 1 is to touch to drive
Moving electrode 11 and the preferred position of touch sensible electrode 12.In the specific implementation, it also can be set in other positions, do not do herein
It limits.
As shown in Figure 3.Thin film transistor (TFT) is set at the crossover location for touching driving electrodes 11 and touch sensible electrode 12,
The grid 211 and touch driving electrodes 11 of the thin film transistor (TFT) are electrically connected, and the grid 211 of thin film transistor (TFT) is located at touch
On driving electrodes 11.Touch sensible electrode 12 disconnects at the position of setting thin film transistor (TFT), the source electrode of the thin film transistor (TFT)
212 are electrically connected with one end of touch sensible electrode 12, the drain electrode 213 of thin film transistor (TFT) and the other end of touch sensible electrode 12
It is electrically connected, it can also be directly using the both ends of the open position of touch sensible electrode 12 as the source electrode of the thin film transistor (TFT)
212 and drain electrode 213.
The grid of the thin film transistor (TFT) is piezoelectric material, and the piezoelectric material is not in the case where by external force, positive charge and negative
The geometric center of charge is to be overlapped, and does not show electrical property externally, as shown in the figure (a) in Fig. 4, when there is external force to be applied to the piezoelectricity
When on material, positive and negative charge center shifts, and externally performance is electrical.The deformation side for the thin film transistor (TFT) that present embodiment provides
It is parallel to each other and contrary to the shift direction of an electric field of generation of positive and negative charge center, as shown in the figure (b) in Fig. 4,
When along the direction x, i.e., when hexagonal crystal system Bai Shi vector<-1000>direction applies external force fx, meeting is in the side parallel but opposite with power
To that is, electric field is presented in hexagonal crystal system Bai Shi vector<1000>direction.The grid is located on the touch driving electrodes, is making
Cheng Zhong, the grid of the thin film transistor (TFT) need to orient film forming, and film forming direction is preferably hexagonal crystal system Bai Shi vector<1000>direction.
As shown in Figure 2 or Figure 3, the positive and negative charge when there is external force F to be applied on the touch screen, in the grid 211 of the thin film transistor (TFT)
It shifts, generates and the electric field E in the direction external force F, positive charge are displaced in touch driving electrodes 11, to increase touch driving
The voltage of electrode 11, so that the electric current between source electrode 212 and drain electrode 213 be made to increase, i.e., the electric current on touch sensible electrode 11 increases
Greatly, touch chip can obtain at pressing position according to the capacitance touched between driving electrodes 11 and touch sensible electrode 12
Pressure size.
In the specific implementation, an initial voltage can be provided for grid by touching driving electrodes, makes the film crystal
Pipe works in saturation region, and an initial current is had between source electrode and drain electrode, to make touch sensible electrode conduction, is not being changed
In the case where becoming the voltage between source electrode and drain electrode, when having pressure to be applied on grid, grid voltage can be increased, to make source electrode
Electric current between drain electrode increases, i.e., the electric current on touch sensible electrode increases, and touch chip is according to the electricity of touch sensible electrode
Flow valuve variation is by calculating the pressure size at available pressing position.
As shown in Figure 2 or Figure 3, in the specific implementation, the touch driving electrodes 11 on underlay substrate 00 and touch sense
It answers and is additionally provided with ohmic contact layer 33, active layer 34 and insulating layer 35 between electrode 12.
Further, capacitive sensing module and pressure sensitive module are set to the inside of touch screen, i.e. the touch screen is preferred
For embedded (in-cell) touch screen, in the specific implementation, capacitive sensing module and pressure sensitive module also can be set and touching
It touches at the other positions of screen, such as on the surface etc. of touch screen, herein not to the position of capacitive sensing module and pressure sensitive module
It sets and is defined.
The pressure sensitive module that embodiment of the present invention provides may include: to connect one to one with touch driving electrodes
Multiple piezoelectricity induction electrodes；
The touch for increasing connection when each piezoelectricity induction electrode is used to be pressed at the position where piezoelectricity induction electrode is driven
The voltage of moving electrode.
When being pressed at the position where piezoelectricity induction electrode, since the direct piezoelectric effect of piezoelectricity induction electrode will increase
The voltage for touching driving electrodes, can specifically be divided into two kinds of situations and be described in detail with reference to the accompanying drawing.
Referring to Fig. 5, each piezoelectricity induction electrode 22, which is arranged in, touches driving electrodes 11 close to the side of touch-control surface, each piezoelectricity
Orthographic projection of the induction electrode 22 on underlay substrate is located in 11 region of touch driving electrodes of connection；
The shift direction of an electric field of generation of the deformation direction and positive and negative charge center of piezoelectricity induction electrode 22 is parallel to each other
And it is contrary, in the production process, piezoelectricity induction electrode 22 needs to orient film forming, and film forming direction is preferably hexagonal crystal system Bai Shi
The direction shown in (b) along-x is schemed in vector<1000>direction in i.e. Fig. 4.
As shown in fig. 6, piezoelectricity induction electrode 22 generates deformation when the touch-control surface for having external force F to be applied to the touch screen
So that positive and negative charge is shifted, generate the electric field E with the direction external force F, positive charge, which is displaced to, to be touched in driving electrodes 11, to increase
The big voltage for touching driving electrodes 11, increases the potential difference for touching driving electrodes 11 and touch sensible electrode, that is, increases touching
Touch the capacitance between driving electrodes 11 and touch sensible electrode, the size and location that touch chip is changed by capacitance, just
The position of available touch or the size of pressing dynamics.
Referring to Fig. 7, each piezoelectricity induction electrode 22 is also electrically connected with neighbouring touch sensible electrode 12 respectively；
The shift direction of an electric field of generation of the deformation direction and positive and negative charge center of piezoelectricity induction electrode 22 is mutually perpendicular to,
And direction of an electric field is the direction that the touch sensible electrode 12 of connection is directed toward from the touch driving electrodes 11 of connection.
In the specific implementation, piezoelectricity induction electrode, which can be located at, touches driving electrodes and touch sensible electrode close to touch screen
The side of touch-control surface, can also be located at touch driving electrodes and touch sensible electrode deviates from the side of touch screen touch-control surface,
What voltage inductance was answered does not have an impact to detection application pressure size positioned at the which side for touching driving electrodes and touch sensible electrode,
So be not defined to the position of piezoelectricity induction electrode herein.
Each piezoelectricity induction electrode is corresponded with touch driving electrodes respectively, and and neighbouring touch sensible electrode electrical property
Connection, when the touch-control surface for having external force to be applied to the touch screen, piezoelectricity induction electrode makes positive and negative charge due to deformation
Offset, due to positive and negative charge shift the electric field of generation direction be from the touchs driving electrodes of connection be directed toward connect touch
The direction of induction electrode, such positive charge, which focuses on, to be touched in driving electrodes, on the touch sensible electrode that negative electrical charge is concentrated, thus
Increase the current potential for touching driving electrodes, and reduce the current potential of touch sensible electrode, increases and touch driving electrodes and touch sense
The potential difference between electrode is answered, that is, increases the capacitance touched between driving electrodes and touch sensible electrode.Knot shown in Fig. 7
Structure is compared with structure shown in fig. 6, and the sensitivity for detecting touch location or pressing dynamics is higher.
Referring again to Fig. 7, in figure, A, B, C and the D in the upper left corner indicate four adjacent piezoelectricity induction electrodes 22, arrow
Indicate when the touch screen is pressed, corresponding 22 positive and negative charge of piezoelectricity induction electrode shift generation electric field direction,
Certain direction of an electric field may be other directions that touch sensible electrode 12 is directed toward by touch driving electrodes 11, herein only with
Signified direction is illustrated as example in Fig. 7, as can be seen that the direction of an electric field of A, B, C and D are different in figure, expression A,
B, the film forming direction of tetra- piezoelectricity induction electrodes 22 of C and D is different, in practical applications, needs to press A, B, C and D tetra-
Electric induction electrode 22 is made respectively, and for the piezoelectricity induction electrode 22 of other positions, direction of an electric field is identical can be together
Production, in the production process, using the vertical material in the direction of the Impact direction as shown in the figure (c) in Fig. 4 and the electric field of generation
Material, and different directions of an electric field is arranged according to the piezoelectricity induction electrode 22 of different location.
In the specific implementation, the touch screen that embodiment of the present invention provides can also include structure as shown in Figure 8, pressure
Induction module may include the multiple piezoelectricity induction electrodes 22 to connect one to one with touch sensible electrode 12；
Side of the touch sensible electrode 12 far from touch-control surface, each piezoelectricity induction electrode is arranged in each piezoelectricity induction electrode 22
22 orthographic projection on underlay substrate is located in 12 region of touch sensible electrode of connection；
The shift direction of an electric field of generation of the deformation direction and positive and negative charge center of piezoelectricity induction electrode 22 is parallel to each other
And it is contrary.In the production process, piezoelectricity induction electrode 22 needs to orient film forming, and film forming direction is preferably hexagonal crystal system Bai Shi
The direction shown in (b) along-x is schemed in vector<1000>direction in i.e. Fig. 4.
As shown in figure 9, piezoelectricity induction electrode 22 generates deformation when the touch-control surface for having external force F to be applied to the touch screen
So that positive and negative charge is shifted, generates the electric field E with the direction external force F, negative electrical charge is displaced on touch sensible electrode 12, to subtract
The voltage of small touch sensible electrode 12 increases the potential difference for touching driving electrodes and touch sensible electrode 12, that is, increases touching
Touch the capacitance between driving electrodes and touch sensible electrode 12, the size and location that touch chip is changed by capacitance, just
The position of available touch or the size of pressing dynamics.
In Fig. 5, Fig. 7 and Fig. 8, driving electrodes 11 will be touched and be set as laterally and by touch sensible electrode 12 being set as
Longitudinal is preferred embodiment provided by the invention, in the specific implementation, can will touch driving electrodes 11 and be set as vertical
It is set as laterally to and by electric 12 poles of touch sensible, can also will touch driving electrodes 11 and touch sensible electrode 12 is set as
Other directions are not defined its placement position herein.In addition, 11 He of driving electrodes will be touched in Fig. 5, Fig. 7 and Fig. 8
It is also preferred embodiment provided by the invention that touch sensible electrode 12, which is set as diamond shape, in the specific implementation, can also be set
Other shapes are set to, the shape for touching driving electrodes 11 and touch sensible electrode 12 are not defined herein.
The material of above-mentioned pressure sensitive electrode is preferably transparent piezoelectric material, in the specific implementation, can also use other
Material, comparison is without limiting.Above-mentioned capacitive sensing module and pressure sensitive module are preferably the display surface for being set to touch screen,
In the specific implementation, capacitive sensing module and pressure sensitive module can also be arranged in the inside of touch screen.Present embodiment
The touch screen of offer is preferably one chip (One Glass Solution, OGS) touch screen or covering surface-type (on-cell) touching
Touch screen, or embedded (in-cell) touch screen is not limited thereof herein.
As shown in Figure 10, by taking structure shown in Fig. 8 as an example, capacitive sensing module 01 is located on underlay substrate 00, is being located at
The capacitive sensing module 01 is provided with supporting layer 36 between the pressure sensitive module 02 and the display surface of touch screen of touch surface.
The supporting layer 36 is preferably or supporting layer 36 flood consistent with the pattern of pressure sensitive electrode setting.If the supporting layer 36 and pressure
The pattern of electric induction electrode is consistent, then the supporting layer 36 is preferably as the shape of corresponding piezoelectricity induction electrode, Huo Zheyou
It is selected as cylinder, to keep support force more uniform, the shape of supporting layer 36 shown in Figure 10 is illustrated for convenience, not
There is the shape for limiting supporting layer 36.When setting supporting layer 36 makes pressure sensitive module 02 be under pressure, supporting layer 36 plays support
Effect, so that piezoelectricity induction electrode is generated bigger deformation, to increase the sensitivity of touch screen.Supporting layer 36 generally using than
Harder material production, so as to alleviate film layer relatively soft in touch screen to the buffer function of the pressure of application, to increase
Big deformation quantity, setting and the corresponding supporting layer of structure shown in Fig. 8 for Fig. 5 and the corresponding supporting layer of structure shown in Fig. 7
Setting it is similar, details are not described herein again.
Referring again to Figure 10, generally in the side where underlay substrate 00, which shows the touch-control table of the touch screen
Show that face can be LCD (Liquid Crystal Display, liquid crystal display) display module 38, optical resin layer can be passed through
37 are fixed on LCD display module in pressure sensitive module, which can be optical adhesive tape (Optical
Clear Adhesive, OCR) or optical clear resin (Optical Clear Resin, OCA), it in the specific implementation, can also
It is pasted or LCD display module 38 is fixed in the film layer of fixed function with being had using other, herein without limitation.In order to reduce
The thickness of display screen can set consistent with the pattern of piezoelectricity induction electrode for supporting layer 36, the filling branch of optical resin layer 37
Support the gap between the pattern of layer 36.
The material of above-mentioned supporting layer is negative photoresist, and other materials also can be used, and is not carried out herein to it
It limits.Underlay substrate can use glass or other organic materials, be not limited thereof herein.
Based on the same inventive concept, the embodiment of the present invention provides a kind of display device, including above-mentioned touch screen.Display dress
It sets and can be applied to that mobile phone, tablet computer, television set, display, laptop, Digital Frame, navigator etc. are any to be had
The products or components of display function.Since the principle that the display device solves the problems, such as is similar to above-mentioned display screen, the display
The implementation of device may refer to the implementation of above-mentioned display screen, and overlaps will not be repeated.
A kind of touch screen provided in an embodiment of the present invention and display device, by the way that capacitive sensing mould is arranged on underlay substrate
Block, pressure sensitive module and touch chip；Touch chip is used to touch driving electrodes by detection when touch screen is touched
Capacitor between touch sensible electrode determines touch location, passes through detection touching when pressure sensitive module position is pressed
The capacitance touched between driving electrodes and touch sensible electrode determines pressure size.The touch screen can not only incude touch location
Information, and the size of pressing dynamics can be incuded, so as to be made a response to any touching object, and can be according to pressing
Strength provides different feedbacks.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (13)
1. a kind of touch screen, which is characterized in that capacitive sensing module including underlay substrate and on the underlay substrate,
Pressure sensitive module and touch chip；
The capacitive sensing module includes touch driving electrodes and touch sensible electrode arranged in a crossed manner；
The pressure sensitive module and the touch driving electrodes are electrically connected, and/or, the pressure sensitive module and the touching
Touch induction electrode electric connection；
The touch chip is electrically connected with the touch driving electrodes and the touch sensible electrode respectively, the touch chip
For passing through the detection capacitor touched between driving electrodes and the touch sensible electrode when the touch screen is touched
Touch location is determined, when pressure sensitive module position is pressed by detecting the touch driving electrodes and described
Capacitance between touch sensible electrode determines pressure size.
2. touch screen as described in claim 1, which is characterized in that the pressure sensitive module includes being located at the touch to drive
Thin film transistor (TFT) at the crossover location of electrode and the touch sensible electrode；
The touch sensible electrode disconnects at the position that the thin film transistor (TFT) is arranged；
One end of the source electrode of the thin film transistor (TFT) and the touch sensible electrode is electrically connected, the drain electrode of the thin film transistor (TFT)
It is electrically connected with the other end of the touch sensible electrode, the grid of the thin film transistor (TFT) and the touch driving electrodes are electrical
Connection；
The grid is located on the touch driving electrodes and is piezoelectric material, the deformation direction of the grid and positive and negative charge
The shift direction of an electric field of generation of center is parallel to each other and contrary.
3. touch screen as claimed in claim 2, which is characterized in that the capacitive sensing module and the pressure sensitive module are set
It is placed in the inside of the touch screen.
4. touch screen as described in claim 1, which is characterized in that the pressure sensitive module includes: to drive with the touch
Multiple piezoelectricity induction electrodes that electrode connects one to one；
Increase the institute of connection when each piezoelectricity induction electrode is used to be pressed at the position where the piezoelectricity induction electrode
State the voltage for touching driving electrodes.
5. touch screen as claimed in claim 4, which is characterized in that each piezoelectricity induction electrode setting drives in the touch
Electrode is located at the institute of connection close to the side of touch-control surface, orthographic projection of each piezoelectricity induction electrode on the underlay substrate
It states and touches in driving electrodes region；
The deformation direction and positive and negative charge center of the piezoelectricity induction electrode shift generation direction of an electric field be parallel to each other and
It is contrary.
6. touch screen as claimed in claim 4, which is characterized in that each piezoelectricity induction electrode also respectively with it is neighbouring described in
Touch sensible electrode is electrically connected；
The shift direction of an electric field of generation of the deformation direction and positive and negative charge center of the piezoelectricity induction electrode is mutually perpendicular to, and
The direction of an electric field is the direction that the touch sensible electrode of connection is directed toward from the touch driving electrodes of connection.
7. touch screen as described in claim 1, which is characterized in that the pressure sensitive module includes and the touch sensible is electric
Multiple piezoelectricity induction electrodes that pole connects one to one；
The side of the touch sensible electrode far from touch-control surface is arranged in each piezoelectricity induction electrode, and each voltage inductance is answered
Electrode is in the touch sensible electrode region that the orthographic projection on the underlay substrate is located at connection；
The deformation direction and positive and negative charge center of the piezoelectricity induction electrode shift generation direction of an electric field be parallel to each other and
It is contrary.
8. such as the described in any item touch screens of claim 4-7, which is characterized in that the material of the pressure sensitive electrode is transparent
Piezoelectric material.
9. such as the described in any item touch screens of claim 4-7, which is characterized in that the capacitive sensing module and the feeling of stress
Module is answered to be set to the display surface of the touch screen.
10. touch screen as claimed in claim 9, which is characterized in that in the aobvious of the pressure sensitive module and the touch screen
Show and is provided with supporting layer between face.
11. touch screen as claimed in claim 10, which is characterized in that the pattern of the supporting layer and the pressure sensitive electrode
Unanimously or the supporting layer flood is arranged.
12. touch screen as claimed in claim 11, which is characterized in that the material of the supporting layer is negative photoresist.
13. a kind of display device, which is characterized in that including such as described in any item touch screens of claim 1-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610515976.1A CN105930019B (en) | 2016-07-01 | 2016-07-01 | A kind of touch screen and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610515976.1A CN105930019B (en) | 2016-07-01 | 2016-07-01 | A kind of touch screen and display device |
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| CN105930019A CN105930019A (en) | 2016-09-07 |
| CN105930019B true CN105930019B (en) | 2019-04-30 |
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| CN201610515976.1A Expired - Fee Related CN105930019B (en) | 2016-07-01 | 2016-07-01 | A kind of touch screen and display device |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10282046B2 (en) | 2015-12-23 | 2019-05-07 | Cambridge Touch Technologies Ltd. | Pressure-sensitive touch panel |
| GB2544353B (en) | 2015-12-23 | 2018-02-21 | Cambridge Touch Tech Ltd | Pressure-sensitive touch panel |
| CN106339129B (en) * | 2016-09-13 | 2019-01-04 | 厦门天马微电子有限公司 | Touch-control display panel and its driving method, In-cell touch panel display |
| CN106527837B (en) * | 2017-01-04 | 2020-11-24 | 京东方科技集团股份有限公司 | Touch panel, driving method thereof, touch screen and display device |
| CN107239167A (en) * | 2017-05-31 | 2017-10-10 | 芯海科技（深圳）股份有限公司 | It is a kind of to improve the apparatus and method that touch control device touches effect |
| US11093088B2 (en) | 2017-08-08 | 2021-08-17 | Cambridge Touch Technologies Ltd. | Device for processing signals from a pressure-sensing touch panel |
| GB2565305A (en) | 2017-08-08 | 2019-02-13 | Cambridge Touch Tech Ltd | Device for processing signals from a pressure-sensing touch panel |
| WO2019173934A1 (en) | 2018-03-12 | 2019-09-19 | 深圳市汇顶科技股份有限公司 | Pressure detection chip and pressure detection method |
| CN109753195B (en) * | 2019-01-15 | 2022-04-01 | 云谷（固安）科技有限公司 | Capacitive touch screen and preparation method thereof |
| CN111592838B (en) * | 2020-05-28 | 2022-03-11 | 马鞍山东毅新材料科技有限公司 | Optical adhesive tape based on negative photoresist and production process thereof |
| CN113946268A (en) * | 2020-07-15 | 2022-01-18 | 中国移动通信有限公司研究院 | User score collection method, client and server |
| CN114967982B (en) * | 2022-08-01 | 2023-09-01 | 深圳贝特莱电子科技股份有限公司 | Improved signal receiving circuit, scanning method and system |
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| CN105094443A (en) * | 2015-08-21 | 2015-11-25 | 深圳市汇顶科技股份有限公司 | Touch pressure detecting device and method |
| CN105511687A (en) * | 2016-01-29 | 2016-04-20 | 京东方科技集团股份有限公司 | Pressure induction structure, pressure induction panel and pressure induction display device |
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| US9029963B2 (en) * | 2012-09-25 | 2015-05-12 | Sand 9, Inc. | MEMS microphone |
| CN105593793B (en) * | 2013-09-27 | 2018-10-26 | 株式会社村田制作所 | Touch input unit |
| CN103472926A (en) * | 2013-10-10 | 2013-12-25 | 昆山攀特电陶科技有限公司 | Flexible piezoelectric keyboard and method for manufacturing flexible piezoelectric keyboard |
| WO2015156196A1 (en) * | 2014-04-07 | 2015-10-15 | 株式会社村田製作所 | Touch panel and electronic device |
| CN205139885U (en) * | 2015-12-01 | 2016-04-06 | 信利光电股份有限公司 | Capacitive touch screen and cell -phone |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105094443A (en) * | 2015-08-21 | 2015-11-25 | 深圳市汇顶科技股份有限公司 | Touch pressure detecting device and method |
| CN105511687A (en) * | 2016-01-29 | 2016-04-20 | 京东方科技集团股份有限公司 | Pressure induction structure, pressure induction panel and pressure induction display device |
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