CN105930019A - Touch screen and display device - Google Patents
Touch screen and display device Download PDFInfo
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- CN105930019A CN105930019A CN201610515976.1A CN201610515976A CN105930019A CN 105930019 A CN105930019 A CN 105930019A CN 201610515976 A CN201610515976 A CN 201610515976A CN 105930019 A CN105930019 A CN 105930019A
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- touch
- electrode
- touch screen
- drive electrode
- pressure sensitive
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- 239000000758 substrate Substances 0.000 claims abstract description 21
- 230000006698 induction Effects 0.000 claims description 72
- 230000005684 electric field Effects 0.000 claims description 28
- 239000010409 thin film Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 11
- 229920002120 photoresistant polymer Polymers 0.000 claims description 3
- 238000003825 pressing Methods 0.000 abstract description 12
- 239000010408 film Substances 0.000 description 13
- 238000001514 detection method Methods 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 7
- 239000013078 crystal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008447 perception Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 238000007689 inspection Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—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 touch screen and a display device. The touch screen comprises a base substrate as well as a capacitive sensing module, a pressure sensing module and a touch chip which are positioned on the base substrate, wherein the capacitive sensing module comprises a touch driving electrode and a touch sensing electrode which are arranged in a cross manner; the pressure sensing module is electrically connected with the touch driving electrode, and/or the pressure sensing module is electrically connected with the touch sensing electrode; the touch chip is respectively and electrically connected with the touch driving electrode and the touch sensing electrode; the touch chip is used for determining a touch position by detecting the capacitance between the touch driving electrode and the touch sensing electrode when the touch screen is touched; when the position where the pressing sensing module is pressed, the pressure size is determined by detecting a capacitance value between the touch driving electrode and the touch sensing electrode. The touch screen can sense touch position information and the pressing strength, thereby making response to any touch object and giving out different feedbacks according to the pressing strength.
Description
Technical field
The present invention relates to technical field of touch control, espespecially a kind of touch screen and display device.
Background technology
Along with developing rapidly of Display Technique, touch screen (Touch Screen Panel) is the most gradually throughout people
Life in.At present, touch screen can be divided into according to operation principle: resistance-type, condenser type, infrared ray
Formula and surface acoustic wave type, electromagnetic type, shake ripple vicarious and frustrated total internal reflection optical induction type etc..Its
In, capacitive touch screen is with the touch-control principle of its uniqueness, by high sensitivity, long-life, high transmission rate etc.
Advantage, is pursued in the industry as new lover.
Current most widely used touch screen is capacitive touch screen.Capacitance touching control supports multi-point touch merit
Can, having higher light transmittance, lower overall power, its contact surface hardness is high, it is not necessary to pressing, uses
Last a long time.But capacitive touch screen perception cannot press surging, i.e. the big of surging cannot be pressed according to user
Little, provide feedback.
Summary of the invention
The embodiment of the present invention provides a kind of touch screen and display device, in order to solve electricity present in prior art
Appearance formula touch screen perception cannot press surging problem.
Embodiments provide a kind of touch screen, including underlay substrate and be positioned on described underlay substrate
Capacitive sensing module, pressure sensitive module and touch chip；
Described capacitive sensing module includes touch drive electrode arranged in a crossed manner and touch sensible electrode；
Described pressure sensitive module is electrically connected with described touch drive electrode, and/or, described voltage inductance Ying Mo
Block is electrically connected with described touch sensible electrode；
Described touch chip is electrically connected with described touch drive electrode and described touch sensible electrode respectively, institute
State touch chip for when described touch screen is touched by detect described touch drive electrode and described touch
The electric capacity touched between induction electrode determines touch location, when described pressure sensitive module position is pressed
Pressure size is determined by detecting the capacitance between described touch drive electrode and described touch sensible electrode.
In a kind of possible embodiment, in the above-mentioned touch screen that the embodiment of the present invention provides, described pressure
It is thin that induction module includes being positioned at the crossover location of described touch drive electrode and described touch sensible electrode
Film transistor；
Described touch sensible electrode disconnects in the position arranging described thin film transistor (TFT)；
The source electrode of described thin film transistor (TFT) is electrically connected with one end of described touch sensible electrode, and described thin film is brilliant
Body pipe drain electrode and described touch sensible electrode the other end be electrically connected with, the grid of described thin film transistor (TFT) with
Described touch drive electrode is electrically connected with；
Described grid is positioned on described touch drive electrode and is piezoelectric, the deformation direction of described grid
The direction of an electric field occurring skew to produce with positive and negative charge center is parallel to each other and in opposite direction.
In a kind of possible embodiment, in the above-mentioned touch screen that the embodiment of the present invention provides, described electric capacity
Induction module and described pressure sensitive module are arranged at the inside of described touch screen.
In a kind of possible embodiment, in the above-mentioned touch screen that the embodiment of the present invention provides, described pressure
Induction module includes: the multiple piezoelectricity induction electrodes connected one to one with described touch drive electrode；
Each described piezoelectricity induction electrode is for increasing when the position at described piezoelectricity induction electrode place is pressed
The voltage of the big described touch drive electrode connected.
In a kind of possible embodiment, in the above-mentioned touch screen that the embodiment of the present invention provides, each described pressure
Electric induction electrode is arranged on described touch drive electrode near the side of touch-control surface, each described piezoelectricity faradism
Pole orthographic projection on described underlay substrate is positioned at the described touch drive electrode region of connection；
There is the direction of an electric field that skew produces in the deformation direction of described piezoelectricity induction electrode and positive and negative charge center
It is parallel to each other and in opposite direction.
In a kind of possible embodiment, in the above-mentioned touch screen that the embodiment of the present invention provides, each described pressure
Electric induction electrode is electrically connected with neighbouring described touch sensible electrode the most respectively；
There is the direction of an electric field that skew produces in the deformation direction of described piezoelectricity induction electrode and positive and negative charge center
It is mutually perpendicular to, and described direction of an electric field is to point to, from the described touch drive electrode connected, the described touch connected
The direction of induction electrode.
In a kind of possible embodiment, in the above-mentioned touch screen that the embodiment of the present invention provides, described pressure
Induction module includes the multiple piezoelectricity induction electrodes connected one to one with described touch sensible electrode；
Each described piezoelectricity induction electrode is arranged on the described touch sensible electrode side away from touch-control surface, each institute
State the orthographic projection on described underlay substrate of the piezoelectricity induction electrode and be positioned at the described touch sensible electrode institute of connection
In region；
There is the direction of an electric field that skew produces in the deformation direction of described piezoelectricity induction electrode and positive and negative charge center
It is parallel to each other and in opposite direction.
In a kind of possible embodiment, in the above-mentioned touch screen that the embodiment of the present invention provides, described pressure
The material of induction electrode is transparent piezoelectric material.
In a kind of possible embodiment, in the above-mentioned touch screen that the embodiment of the present invention provides, described electric capacity
Induction module and described pressure sensitive module are arranged at the display surface of described touch screen.
In a kind of possible embodiment, in the above-mentioned touch screen that the embodiment of the present invention provides, in described pressure
It is provided with supporting layer between the display surface of power induction module and described touch screen.
In a kind of possible embodiment, in the above-mentioned touch screen that the embodiment of the present invention provides, described support
Layer is consistent with the pattern of described pressure sensitive electrode, or described supporting layer flood is arranged.
In a kind of possible embodiment, in the above-mentioned touch screen that the embodiment of the present invention provides, described support
The material of layer is negative photoresist.
The embodiment of the present invention additionally provides a kind of display device, including above-mentioned touch screen.
The present invention has the beneficial effect that:
The embodiment of the present invention provide a kind of touch screen and display device, this touch screen include underlay substrate and
Capacitive sensing module, pressure sensitive module and the touch chip being positioned on underlay substrate；Capacitive sensing module
Including touch drive electrode arranged in a crossed manner and touch sensible electrode；Pressure sensitive module and touch drive electrode
It is electrically connected with, and/or, piezoelectricity induction module is electrically connected with touch sensible electrode；Touch chip is respectively with tactile
Touching drive electrode and touch sensible electrode is electrically connected with, touch chip for passing through inspection when touch screen is touched
Survey the electric capacity touched between drive electrode and touch sensible electrode and determine touch location, in pressure sensitive module institute
The capacitance touched between drive electrode and touch sensible electrode by detection when position is pressed determines pressure
Power size.This touch screen is possible not only to sense touching position information, and can sense the size pressing surging,
Such that it is able to any touching object is responded, and can be according to being given different by the size of surging
Feedback.
Accompanying drawing explanation
Capacitive sensing module and the position relationship of pressure sensitive module that Fig. 1 provides for embodiment of the present invention show
It is intended to；
Fig. 2 is Fig. 1 sectional view in the X direction；
Fig. 3 is Fig. 1 sectional view in the Y direction；
Fig. 4 is the stress of the piezoelectric in different film forming direction and produces the schematic diagram in direction of electric field；
One of structural representation of a kind of display screen that Fig. 5 provides for embodiment of the present invention；
Fig. 6 is the sectional view of the display screen shown in Fig. 4；
The two of the structural representation of a kind of display screen that Fig. 7 provides for embodiment of the present invention；
The three of the structural representation of a kind of display screen that Fig. 8 provides for embodiment of the present invention；
Fig. 9 is the sectional view of the display screen shown in Fig. 7；
The sectional view of a kind of display screen that Figure 10 provides for embodiment of the present invention.
Detailed description of the invention
Perception cannot press the problem of surging for capacitive touch screen present in prior art, the present invention is real
Execute example and provide a kind of touch screen and display device.
Embodiments provide a kind of touch screen, including underlay substrate and the electricity that is positioned on underlay substrate
Hold induction module, pressure sensitive module and touch chip；
Capacitive sensing module includes touch drive electrode arranged in a crossed manner and touch sensible electrode；
Pressure sensitive module is electrically connected with touching drive electrode, and/or, piezoelectricity induction module and touch sensible
Electrode is electrically connected with；
Touch chip is electrically connected with touch drive electrode and touch sensible electrode respectively, and touch chip is used for
The electric capacity touched between drive electrode and touch sensible electrode by detection when touch screen is touched determines touch
Position, touches drive electrode and touch sensible electricity when pressure sensitive module position is pressed by detection
Capacitance between pole determines pressure size.
The touch screen that embodiment of the present invention provides, pressure sensitive module is electrically connected with touching drive electrode,
And/or, piezoelectricity induction module is electrically connected with touch sensible electrode, when this touch screen is touched, and touch-control core
The electric capacity that sheet is touched between drive electrode and touch sensible electrode by detection determines touch location, and at this
When touch screen is pressed, touch chip touches the electric capacity between drive electrode and touch sensible electrode by detection
Value determines pressure size.The touch screen that present embodiment provides is possible not only to sense touching position information, and
The size pressing surging can be sensed, such that it is able to any touching object is responded, and can be according to pressing
The size of surging provides different feedbacks.
Above-mentioned capacitive sensing module includes touch drive electrode arranged in a crossed manner and touch sensible electrode, and touch is driven
Moving electrode and touch sensible electrode are preferably square crossing and arrange.In the specific implementation, touch chip respectively to
Touch drive electrode to apply drive signal and apply induced signal to touch sensible electrode, and by detection
Touch drive electrode and the output signal of touch sensible electrode, thus obtain touching drive electrode and touching sense
Answering the capacitance variations between electrode, in the specific implementation, touch chip can be by touching and the time of pressing
Point difference, or by touching different this touch screen of distinguishing of the order of magnitude of the capacitance variations produced with pressing be
It is touched or is pressed.
Capacitive sensing module and the position relationship of pressure sensitive module that Fig. 1 provides for embodiment of the present invention show
Being intended to, Fig. 2 is Fig. 1 sectional view in the X direction, and Fig. 3 is Fig. 1 sectional view in the Y direction.
Seeing Fig. 1, pressure sensitive module includes being positioned at and touches drive electrode 11 and touch sensible electrode 12
Thin film transistor (TFT) 21 at crossover location；
Touch sensible electrode 12 disconnects, as shown in Figure 3 in the position arranging thin film transistor (TFT) 21；
The source electrode of thin film transistor (TFT) 21 is electrically connected with one end of touch sensible electrode 12, thin film transistor (TFT) 21
Drain electrode and touch sensible electrode 12 the other end be electrically connected with, the grid of thin film transistor (TFT) 21 drives with touch
Moving electrode 11 is electrically connected with；
Grid is positioned on touch drive electrode 11 and is piezoelectric, the deformation direction of grid and positive negative electricity
The direction of an electric field that lotus center occurs skew to produce is parallel to each other and in opposite direction.
Touch drive electrode 11 shown in Fig. 1 and touch sensible electrode 12 are arranged for square crossing, and touch
Touch drive electrode 11 parallel with the gate line 32 of sub-pixel unit, with the data (data) of sub-pixel unit
The data wire 31 of line 31 square crossing, touch sensible electrode 12 and sub-pixel unit is parallel, with sub-pix
The gate line 32 of unit is parallel, and Fig. 1 is illustrated that touch drive electrode 11 and touch sensible electrode 12 are excellent
The position of choosing.In the specific implementation, it is also possible to be arranged on other positions, do not limit.
As shown in Figure 3.Arrange thin at the crossover location touching drive electrode 11 and touch sensible electrode 12
Film transistor, grid 211 and the touch drive electrode 11 of this thin film transistor (TFT) are electrically connected with, and thin film
The grid 211 of transistor is positioned on touch drive electrode 11.Touch sensible electrode 12 is arranging thin film crystalline substance
The position of body pipe disconnects, and the source electrode 212 of this thin film transistor (TFT) is electrical with one end of touch sensible electrode 12
Connecting, the drain electrode 213 of thin film transistor (TFT) and the other end of touch sensible electrode 12 are electrically connected with, it is also possible to
Directly using the two ends of the open position of touch sensible electrode 12 as the source electrode 212 of this thin film transistor (TFT)
With drain electrode 213.
The grid of this thin film transistor (TFT) is piezoelectric, this piezoelectric in the case of not by external force, positive electricity
The geometric center of lotus and negative charge is to overlap, and does not the most show electrically, as shown in the figure (a) in Fig. 4,
When there being external force to be applied on this piezoelectric, positive and negative charge center offsets, and externally performance is electrically.This
There is the electric field that skew produces in the deformation direction of the thin film transistor (TFT) that embodiment provides and positive and negative charge center
Direction is parallel to each other and in opposite direction, as shown in the figure (b) in Fig. 4, when along x direction, and i.e. six sides
When crystallographic system Bai Shi vector<-1000>direction applies external force fx, understand in the direction parallel but contrary with power, i.e. six
Prismatic crystal system Bai Shi vector<1000>direction presents electric field.This grid is positioned on this touch drive electrode, in system
During work, the grid of this thin film transistor (TFT) needs 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, when there being external force F to be applied on this touch screen, this is thin
Positive and negative charge in the grid 211 of film transistor offsets, and produces and the electric field E in external force F direction, just
Charge Deviation is to touching on drive electrode 11, thus increases the voltage touching drive electrode 11, so that source
Electric current between pole 212 and drain electrode 213 increases, i.e. electric current on touch sensible electrode 11 increases, touch-control
Chip can obtain pressing position according to the capacitance touched between drive electrode 11 and touch sensible electrode 12
The pressure size at place.
In the specific implementation, an initial voltage can be provided by touching drive electrode for grid, make this thin
Film transistor is operated in saturation region, has an initial current between source electrode and drain electrode, so that touching sense
Answer electrode conduction, in the case of the voltage not changed between source electrode and drain electrode, have pressure to be applied on grid
Time, grid voltage can raise, so that the electric current between source electrode and drain electrode increases, i.e. on touch sensible electrode
Electric current increase, touch chip changes by calculating and can be pressed according to the current value of touch sensible electrode
The pressure size of position.
As shown in Figure 2 or Figure 3, in the specific implementation, the touch drive electrode being positioned on underlay substrate 00
Ohmic contact layer 33, active layer 34 and insulating barrier it is additionally provided with between 11 and touch sensible electrode 12
35。
Further, capacitive sensing module and pressure sensitive module are arranged at the inside of touch screen, i.e. this touch
Shield the most embedded (in-cell) touch screen, in the specific implementation, capacitive sensing module and pressure sensitive
Module can also be arranged on other positions of touch screen, such as on the surface etc. of touch screen, the most not to electricity
The position holding induction module and pressure sensitive module is defined.
The pressure sensitive module that embodiment of the present invention provides may include that and touch drive electrode one_to_one corresponding
The multiple piezoelectricity induction electrodes connected；
Each piezoelectricity induction electrode for increasing connection when the position at piezoelectricity induction electrode place is pressed
Touch the voltage of drive electrode.
When the position at piezoelectricity induction electrode place is pressed, due to the direct piezoelectric effect of piezoelectricity induction electrode
The voltage touching drive electrode can be increased, specifically can be divided into two kinds of situations, below in conjunction with the accompanying drawings, carry out in detail
Describe in detail bright.
With reference to Fig. 5, each piezoelectricity induction electrode 22 is arranged on touch drive electrode 11 near the one of touch-control surface
Side, the orthographic projection on underlay substrate of each piezoelectricity induction electrode 22 is positioned at touch drive electrode 11 institute of connection
In region；
There is the direction of an electric field phase that skew produces in the deformation direction of piezoelectricity induction electrode 22 and positive and negative charge center
The most parallel and in opposite direction, in manufacturing process, piezoelectricity induction electrode 22 needs to orient film forming, film forming side
To preferably hexagonal crystal system Bai Shi vector<1000>direction, i.e. Fig. 4 schemes the direction of the edge-x shown in (b).
As shown in Figure 6, when the touch-control surface having external force F to be applied to this touch screen, piezoelectricity induction electrode 22
Producing deformation makes positive and negative charge offset, and produces and the electric field E in external force F direction, and positive charge is displaced to touch
Touch on drive electrode 11, thus increase the voltage touching drive electrode 11, increase touch drive electrode 11
With the potential difference of touch sensible electrode, i.e. increase between touch drive electrode 11 and touch sensible electrode
Capacitance, the size and location that touch chip is changed by capacitance, it is possible to obtain touch position or
By the size of surging.
With reference to Fig. 7, each piezoelectricity induction electrode 22 is electrically connected with neighbouring touch sensible electrode 12 the most respectively；
There is the direction of an electric field phase that skew produces in the deformation direction of piezoelectricity induction electrode 22 and positive and negative charge center
Mutual vertical, and the touch sensible electrode 12 that direction of an electric field is the touch drive electrode 11 sensing connection from connection
Direction.
In the specific implementation, piezoelectricity induction electrode may be located at touch drive electrode and touch sensible electrode is close
The side of touch screen touch-control surface, it is also possible to be positioned at touch drive electrode and touch sensible electrode deviates from touch screen
The side of touch-control surface, what voltage inductance was answered is positioned at which side of touch drive electrode and touch sensible electrode to inspection
Survey and apply the not impact of pressure size, so the position of piezoelectricity induction electrode not being defined.
Each piezoelectricity induction electrode respectively with touch drive electrode one_to_one corresponding, and and neighbouring touch sensible electricity
Pole is electrically connected with, and when the touch-control surface having external force to be applied to this touch screen, piezoelectricity induction electrode is due to deformation
And make positive and negative charge offset, owing to positive and negative charge occurs the direction of the electric field of skew generation to be from connecting
Touching drive electrode and point to the direction of the touch sensible electrode connected, such positive charge focuses on touch and drives electricity
Extremely go up, on the touch sensible electrode that negative charge is concentrated, thus increase the current potential touching drive electrode, and subtract
The current potential of little touch sensible electrode, increases the electric potential difference touched between drive electrode and touch sensible electrode,
I.e. increase the capacitance touched between drive electrode and touch sensible electrode.Structure shown in Fig. 7 and Fig. 6
Shown structure is compared, detection touch location or to press the sensitivity of surging higher.
Referring again to Fig. 7, in figure, A, B, C and the D in the upper left corner represents four adjacent voltage inductances
Answering electrode 22, arrow represents when this touch screen is pressed, corresponding piezoelectricity induction electrode 22 positive and negative charge
The direction of the electric field of skew generation occurs, and this direction of an electric field can also be for being referred to by touch drive electrode 11 certainly
To other directions of touch sensible electrode 12, simply carry out using the direction of indication in Fig. 7 as example herein
Illustrate, it can be seen that the direction of an electric field of A, B, C and D is different in figure, represent A, B, C and
The film forming direction of tetra-piezoelectricity induction electrodes 22 of D is different, in actual applications, need to A, B, C with
And tetra-piezoelectricity induction electrodes 22 of D make respectively, for the piezoelectricity induction electrode 22 of other positions,
Identical can the making together of direction of an electric field, in manufacturing process, uses as shown in the figure (c) in Fig. 4
The Impact direction material vertical with the direction of the electric field of generation, and according to the piezoelectricity faradism of diverse location
Pole 22 arranges different directions of an electric field.
In the specific implementation, the touch screen that embodiment of the present invention provides can also include knot as shown in Figure 8
Structure, pressure sensitive module can include that the multiple voltage inductances connected one to one with touch sensible electrode 12 should
Electrode 22；
Each piezoelectricity induction electrode 22 is arranged on the touch sensible electrode 12 side away from touch-control surface, each piezoelectricity
The induction electrode 22 orthographic projection on underlay substrate is positioned at touch sensible electrode 12 region of connection；
There is the direction of an electric field phase that skew produces in the deformation direction of piezoelectricity induction electrode 22 and positive and negative charge center
The most parallel and in opposite direction.In manufacturing process, piezoelectricity induction electrode 22 needs to orient film forming, film forming side
To preferably hexagonal crystal system Bai Shi vector<1000>direction, i.e. Fig. 4 schemes the direction of the edge-x shown in (b).
As it is shown in figure 9, when the touch-control surface having external force F to be applied to this touch screen, piezoelectricity induction electrode 22
Producing deformation makes positive and negative charge offset, and produces and the electric field E in external force F direction, and negative charge is displaced to touch
Touch on induction electrode 12, thus reduce the voltage of touch sensible electrode 12, increase touch drive electrode and
The potential difference of touch sensible electrode 12, i.e. increases between touch drive electrode and touch sensible electrode 12
Capacitance, the size and location that touch chip is changed by capacitance, it is possible to obtain touch position or
By the size of surging.
In Fig. 5, Fig. 7 and Fig. 8, touch drive electrode 11 is set to laterally and by touch sensible electricity
Pole 12 is set to the longitudinally simply present invention to be provided preferred embodiment, in the specific implementation, and can be by
Touch drive electrode 11 be set to longitudinally and be set to laterally by touch sensible electricity 12 poles, it is also possible to will touch
Touch drive electrode 11 and touch sensible electrode 12 is set to other directions, not carry out its putting position
Limit.Additionally, in Fig. 5, Fig. 7 and Fig. 8, drive electrode 11 and touch sensible electrode 12 will be touched
Being set to rhombus is also that the present invention provides preferred embodiment, in the specific implementation, it is also possible to be set to
Other shapes, are not defined the shape touching drive electrode 11 and touch sensible electrode 12.
The material of above-mentioned pressure sensitive electrode is preferably transparent piezoelectric material, in the specific implementation, it is also possible to adopt
With other materials, contrast is not defined.Above-mentioned capacitive sensing module and pressure sensitive module are preferably and arrange
In the display surface of touch screen, in the specific implementation, it is also possible to capacitive sensing module and pressure sensitive module are set
Put the inside at touch screen.The touch screen that present embodiment provides is preferably one chip (One Glass
Solution, OGS) touch screen or cover surface-type (on-cell) touch screen, it is also possible to for embedded (in-cell)
Touch screen, is not limited thereof herein.
As shown in Figure 10, as a example by the structure shown in Fig. 8, capacitive sensing module 01 is positioned at underlay substrate 00
On, deviate from the pressure sensitive module 02 of touch surface and the display of touch screen being positioned at this capacitive sensing module 01
Supporting layer 36 it is provided with between face.This supporting layer 36 is preferably consistent with the pattern of pressure sensitive electrode, or
Supporting layer 36 flood is arranged.If this supporting layer 36 is consistent with the pattern of piezoelectricity induction electrode, then this supporting layer
36 is preferably the same or preferably cylindrical with the shape of corresponding piezoelectricity induction electrode, so that supporting
Power is more uniform, and the shape of the supporting layer 36 shown in Figure 10 is illustrated for convenience, does not limit and props up
The shape of support layer 36.Supporting layer 36 is set when making pressure sensitive module 02 be under pressure, supporting layer 36
To the effect supported, make piezoelectricity induction electrode produce bigger deformation, thus increase the sensitivity of touch screen.
Supporting layer 36 typically uses harder material to make, such that it is able to alleviate film layer softer in touch screen
Cushioning effect to the pressure applied, thus increase deformation quantity, corresponding for the structure shown in Fig. 5 with Fig. 7
The setting of the supporting layer supporting layer corresponding with the structure shown in Fig. 8 arrange similar, here is omitted.
Referring again to Figure 10, the touch-control table of this touch screen is typically in the side at underlay substrate 00 place, and this shows
The display surface of display screen can be that LCD (Liquid Crystal Display, liquid crystal display) shows module
38, by optical resin layer 37, LCD can be shown that module is fixed in pressure sensitive module, this optics
Resin bed 37 can be optical adhesive tape (Optical Clear Adhesive, OCR) or optical clear resin
(Optical Clear Resin, OCA), in the specific implementation, it would however also be possible to employ other are pasted or fixing
LCD display module 38 is fixed by the film layer of effect, does not limits.In order to reduce display screen
Thickness, can be set to consistent with the pattern of piezoelectricity induction electrode by supporting layer 36, and optical resin layer 37 is filled out
Fill the gap between the pattern of supporting layer 36.
The material of above-mentioned supporting layer is preferably as negative photoresist, it is possible to use other materials, the most right
It is defined.Underlay substrate can use glass or other organic materials, is not limited thereof herein.
Based on same inventive concept, the embodiment of the present invention provides a kind of display device, including above-mentioned touch screen.
This display device can apply to mobile phone, panel computer, television set, display, notebook computer, number
Any product with display function such as photo frame, navigator or parts.Owing to this display device solves problem
Principle is similar to above-mentioned display screen, and therefore the enforcement of this display device may refer to the enforcement of above-mentioned display screen,
Repeat no more in place of repetition.
A kind of touch screen of embodiment of the present invention offer and display device, by arranging electric capacity on underlay substrate
Induction module, pressure sensitive module and touch chip；Touch chip is for passing through when touch screen is touched
The electric capacity that detection touches between drive electrode and touch sensible electrode determines touch location, in pressure sensitive module
The capacitance touched between drive electrode and touch sensible electrode by detection when position is pressed is determined
Pressure size.This touch screen is possible not only to sense touching position information, and can sense the size pressing surging,
Such that it is able to any touching object is responded, and can be given different anti-according to pressing dynamics size
Feedback.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (13)
1. a touch screen, it is characterised in that include underlay substrate and be positioned on described underlay substrate
Capacitive sensing module, pressure sensitive module and touch chip；
Described capacitive sensing module includes touch drive electrode arranged in a crossed manner and touch sensible electrode；
Described pressure sensitive module is electrically connected with described touch drive electrode, and/or, described voltage inductance Ying Mo
Block is electrically connected with described touch sensible electrode；
Described touch chip is electrically connected with described touch drive electrode and described touch sensible electrode respectively, institute
State touch chip for when described touch screen is touched by detect described touch drive electrode and described touch
The electric capacity touched between induction electrode determines touch location, when described pressure sensitive module position is pressed
Pressure size is determined by detecting the capacitance between described touch drive electrode and described touch sensible electrode.
2. touch screen as claimed in claim 1, it is characterised in that described pressure sensitive module includes position
Thin film transistor (TFT) at the crossover location of described touch drive electrode and described touch sensible electrode；
Described touch sensible electrode disconnects in the position arranging described thin film transistor (TFT)；
The source electrode of described thin film transistor (TFT) is electrically connected with one end of described touch sensible electrode, and described thin film is brilliant
Body pipe drain electrode and described touch sensible electrode the other end be electrically connected with, the grid of described thin film transistor (TFT) with
Described touch drive electrode is electrically connected with；
Described grid is positioned on described touch drive electrode and is piezoelectric, the deformation direction of described grid
The direction of an electric field occurring skew to produce with positive and negative charge center is parallel to each other and in opposite direction.
3. touch screen as claimed in claim 2, it is characterised in that described capacitive sensing module and described
Pressure sensitive module is arranged at the inside of described touch screen.
4. touch screen as claimed in claim 1, it is characterised in that described pressure sensitive module includes:
The multiple piezoelectricity induction electrodes connected one to one with described touch drive electrode；
Each described piezoelectricity induction electrode is for increasing when the position at described piezoelectricity induction electrode place is pressed
The voltage of the big described touch drive electrode connected.
5. touch screen as claimed in claim 4, it is characterised in that each described piezoelectricity induction electrode is arranged
At described touch drive electrode near the side of touch-control surface, each described piezoelectricity induction electrode is at described substrate base
Orthographic projection on plate is positioned at the described touch drive electrode region of connection；
There is the direction of an electric field that skew produces in the deformation direction of described piezoelectricity induction electrode and positive and negative charge center
It is parallel to each other and in opposite direction.
6. touch screen as claimed in claim 4, it is characterised in that each described piezoelectricity induction electrode also divides
It is not electrically connected with neighbouring described touch sensible electrode；
There is the direction of an electric field that skew produces in the deformation direction of described piezoelectricity induction electrode and positive and negative charge center
It is mutually perpendicular to, and described direction of an electric field is to point to, from the described touch drive electrode connected, the described touch connected
The direction of induction electrode.
7. touch screen as claimed in claim 1, it is characterised in that described pressure sensitive module include with
Multiple piezoelectricity induction electrodes that described touch sensible electrode connects one to one；
Each described piezoelectricity induction electrode is arranged on the described touch sensible electrode side away from touch-control surface, each institute
State the orthographic projection on described underlay substrate of the piezoelectricity induction electrode and be positioned at the described touch sensible electrode institute of connection
In region；
There is the direction of an electric field that skew produces in the deformation direction of described piezoelectricity induction electrode and positive and negative charge center
It is parallel to each other and in opposite direction.
8. the touch screen as described in any one of claim 4-7, it is characterised in that described pressure sensitive electricity
The material of pole is transparent piezoelectric material.
9. the touch screen as described in any one of claim 4-7, it is characterised in that described capacitive sensing mould
Block and described pressure sensitive module are arranged at the display surface of described touch screen.
10. touch screen as claimed in claim 9, it is characterised in that in described pressure sensitive module and institute
State and be provided with supporting layer between the display surface of touch screen.
11. touch screens as claimed in claim 10, it is characterised in that described supporting layer and described pressure
The pattern of induction electrode is consistent, or described supporting layer flood is arranged.
12. touch screens as claimed in claim 11, it is characterised in that the material of described supporting layer is negative
Property photoresist.
13. 1 kinds of display devices, it is characterised in that include touching as described in any one of claim 1-12
Touch screen.
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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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| CN201610515976.1A CN105930019B (en) | 2016-07-01 | 2016-07-01 | A kind of touch screen and display device |
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| CN105930019A true CN105930019A (en) | 2016-09-07 |
| CN105930019B 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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| CN106339129A (en) * | 2016-09-13 | 2017-01-18 | 厦门天马微电子有限公司 | Touch display panel, driving method thereof and embedded touch display |
| CN106527837A (en) * | 2017-01-04 | 2017-03-22 | 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 |
| US10254894B2 (en) | 2015-12-23 | 2019-04-09 | Cambridge Touch Technologies Ltd. | Pressure-sensitive touch panel |
| US10282046B2 (en) | 2015-12-23 | 2019-05-07 | Cambridge Touch Technologies Ltd. | Pressure-sensitive touch panel |
| CN109753195A (en) * | 2019-01-15 | 2019-05-14 | 云谷（固安）科技有限公司 | Capacitive touch screen and preparation method thereof |
| 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 |
| CN111592838A (en) * | 2020-05-28 | 2020-08-28 | 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 |
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| US11093088B2 (en) | 2017-08-08 | 2021-08-17 | Cambridge Touch Technologies Ltd. | Device for processing signals from a pressure-sensing touch panel |
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| CN114967982A (en) * | 2022-08-01 | 2022-08-30 | 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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| CN111592838A (en) * | 2020-05-28 | 2020-08-28 | 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 |
| 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 |
| CN114967982A (en) * | 2022-08-01 | 2022-08-30 | 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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