CN104216592B - A kind of touch screen and its driving method - Google Patents
A kind of touch screen and its driving method Download PDFInfo
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- CN104216592B CN104216592B CN201410475089.7A CN201410475089A CN104216592B CN 104216592 B CN104216592 B CN 104216592B CN 201410475089 A CN201410475089 A CN 201410475089A CN 104216592 B CN104216592 B CN 104216592B
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Abstract
The invention discloses a kind of touch screen and its driving method, the touch screen includes the first substrate and second substrate being oppositely arranged, the multiple first electrodes arranged in the first direction and the multiple second electrodes arranged in a second direction are respectively positioned on the inner surface of first substrate, or it is respectively positioned on the inner surface of second substrate, or first electrode is located at first substrate inner surface, second electrode is located at second substrate inner surface；The first electrode and second electrode are as electromagnetic touch electrode, positioned at multiple capacitance touching control induction electrodes of the first substrate outer surface, wherein, the first electrode or second electrode are multiplexed as capacitance touching control driving electrodes.The present invention can realize the touch screen of embedded, integrated electromagnetism input function and electric capacity input function, so as to reduce the network complexity of touch screen, thickness and cost.
Description
Technical field
The present invention relates to display technology field, and in particular to a kind of touch screen and its driving method.
Background technology
With the rapid development of Display Technique, touch screen (Touch Panel) is gradually in the life of people.With
The traditional monitor for being only capable of providing display function is compared, and user and display control are enabled to using the display of touch-screen
Information exchange is carried out between main frame, therefore, touch screen completely or at least partly can instead of conventional input unit so that
Existing display can not only be shown, moreover it is possible to touch control.
Common touch screen is divided into resistance type touch control screen, capacitance type touch control screen, electromagnetic touch-control screen and infrared ray interrupter-type
Touch screen etc..In the prior art, while there is electromagnetism input and the input equipment of electric capacity input function not to have display function but, it is existing
Some electromagnetic touch-control screens, usually liquid crystal display panel and the module with electromagnetism input function are assembled in using external hanging type
Together, the module that will have electromagnetism input function is fitted in outside liquid crystal display panel, such that existing electromagnetic type
The complex circuit of touch screen, certain limitation is caused to the size of touch screen, in addition, when the module with electromagnetism input function is pasted
Behind liquid crystal display panel outside, due to being influenceed by liquid crystal display panel internal components, touching signals can weaken,
And the signal to noise ratio of touching signals reduces.
The content of the invention
It is an object of the invention to provide a kind of touch screen and its driving method, to realize embedded, integrated electromagnetism input
The touch screen of function and electric capacity input function, the electromagnetic touch touch screen integrated with capacitance touching control is extended into more large scale,
Improve the signal to noise ratio of electromagnetic touch touch screen integrated with capacitance touching control.
In a first aspect, the embodiments of the invention provide touch screen, including：
The first substrate and second substrate being oppositely arranged；
The multiple first electrodes arranged in the first direction and the multiple second electrodes arranged in a second direction are respectively positioned on first
The inner surface of substrate, the inner surface or first electrode for being either respectively positioned on second substrate are located at first substrate inner surface,
Second electrode is located at second substrate inner surface；The first electrode and second electrode are as electromagnetic touch electrode；
Positioned at multiple capacitance touching control induction electrodes of the first substrate outer surface；
Wherein, the first electrode or second electrode are multiplexed as capacitance touching control driving electrodes.
Second aspect, the embodiments of the invention provide a kind of driving method of touch screen, the touch screen is above-mentioned first
Touch screen described in aspect, the driving method include：
Electromagnetic induction signal is gathered from the electromagnetic touch electrode, to realize electromagnetic touch function；
Electric capacity drive signal is provided to the capacitance touching control driving electrodes；
Capacitive sensing signal is gathered from the capacitance touching control induction electrode using capacitance touching control circuit, to realize capacitance touching control
Function；
Wherein, the display driver circuit sends control signal to the electromagnetic touch circuit and capacitance touching control circuit, with
It is determined that carry out the time point of electromagnetic touch or capacitance touching control.
Touch screen and its driving method provided in an embodiment of the present invention, embedded, integrated electromagnetism input work can be realized
Can and electric capacity input function touch screen, it is integrated with electromagnetic touch and capacitance touching control to realize display, by electromagnetic touch and
The touch screen of capacitance touching control integration extends to more large scale, improves the noise of electromagnetic touch touch screen integrated with capacitance touching control
Than.
Brief description of the drawings
The exemplary embodiment of the present invention will be described in detail by referring to accompanying drawing below, make one of ordinary skill in the art
The above-mentioned and other feature and advantage of the present invention are become apparent from, in accompanying drawing：
Fig. 1 is the first electrode of touch screen and the cross section structure schematic diagram of second electrode that the embodiment of the present invention one provides；
Fig. 2 is the first electrode of touch screen and the overlooking the structure diagram of second electrode that the embodiment of the present invention one provides；
Fig. 3 is the overlooking the structure diagram for the bridge that the embodiment of the present invention one provides；
Fig. 4 is that the touch screen that the embodiment of the present invention one provides realizes electromagnetic touch and the first connection signal of capacitance touching control
Figure；
Fig. 5 is that the touch screen that the embodiment of the present invention one provides realizes electromagnetic touch and second of connection signal of capacitance touching control
Figure；
Fig. 6 is that the touch screen that the embodiment of the present invention one provides realizes electromagnetic touch and the third connection signal of capacitance touching control
Figure；
Fig. 7 is the connection signal of electromagnetic touch circuit and electromagnetic touch electrode in the touch screen that the embodiment of the present invention one provides
Figure；
Fig. 8 is the connection diagram of capacitance touching control circuit and capacitance touching control induction electrode that the embodiment of the present invention one provides；
Fig. 9 is the cross section structure schematic diagram for the touch screen that the embodiment of the present invention two provides；
Figure 10 is the cross section structure schematic diagram for the touch screen that the embodiment of the present invention three provides；
Figure 11 is the cross section structure schematic diagram for the touch screen that the embodiment of the present invention four provides；
Figure 12 is the cross section structure schematic diagram for the touch screen that the embodiment of the present invention five provides；
Figure 13 is the flow chart of the driving method for the touch screen that the embodiment of the present invention six provides.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than full content, and same or similar mark in accompanying drawing are illustrate only in description, accompanying drawing
Number represent same or similar element or the element with same or like function.
Fig. 1 is the cross section structure schematic diagram for the touch screen that the embodiment of the present invention one provides, and refers to Fig. 1, the present embodiment carries
The touch screen of confession includes：The first substrate 11 and second substrate 12 being oppositely arranged, the multiple first electrodes arranged in the first direction
13 and multiple second electrodes 14 for arranging in a second direction be respectively positioned on the inner surface of first substrate 11, first electrode 13 and second
Electrode 14 is used as electromagnetic touch electrode, positioned at multiple capacitance touching control induction electrodes 15 of the outer surface of first substrate 11, wherein, it is multiple
Capacitance touching control driving electrodes are used as by the use of first electrode 13 or second electrode 14.
The electromagnetic touch electrode is different from the material of capacitance touching control induction electrode 15, the material of the electromagnetic touch electrode
For metal material, the material of the capacitance touching control induction electrode is transparent conductive material or metal grill, wherein, electrically conducting transparent material
Material can be any one or combinations thereof in indium tin oxide (ITO), indium-zinc oxide (IZO).
Optionally, as shown in Fig. 2 Fig. 2 is the electricity of first electrode 13 and second for the touch screen that the embodiment of the present invention one provides
The overlooking the structure diagram of pole 14, the first direction and second direction are intersected, optionally, the first direction and second direction
For square crossing, in the present embodiment, the first direction is designated as X-direction, and the second direction is designated as Y-direction,
Wherein, X-direction is vertical with Y-direction, can also the first direction be designated as Y-direction, the second direction is designated as X side
To.In addition, multiple first electrodes 13 arrange in the first direction, but each first electrode 13 extends in a second direction；Multiple second
Electrode 14 arranges in a second direction, but each second electrode 14 extends in a first direction.In the present embodiment, first electrode and
Two electrodes are mutually perpendicular to, and the bearing of trend of the bearing of trend of the electric capacity driving electrodes and the capacitance touching control induction electrode is mutual
Vertically.
Optionally, Fig. 1 is referred to, first substrate 11 is color membrane substrates, and second substrate 12 is array base palte, the color film base
Plate includes the black-matrix layer 18 positioned at the inner side of first substrate 11, first electrode 13, second electrode 14 and capacitance touching control driving electricity
Pole is covered in black-matrix layer 18 towards the one side of array base palte 12.The material of black-matrix layer 18 be, for example, metal (such as
Chromium), graphite or resin type material, it is formed on the inside of color membrane substrates, and can form black matrix structure.
Optionally, continuing with referring to Fig. 1, the multiple first electrodes 13 arranged in the first direction and arrange in a second direction
Multiple second electrodes 14 are respectively positioned on the inner surface of first substrate 11, and the multiple first electrode and multiple second electrodes are respectively positioned on
One metal level and electrically insulated from one another, i.e. first electrode 13 and second electrode 14 are located at same layer, in the electricity of first electrode 13 and second
The infall of pole 14, first electrode 13 are electrically connected by being arranged at the bridge a of second metal layer, and the bridge can use transparent lead
Electric material or metal are made.
Further, the first metal layer and second metal layer are electrically insulated by color filter film 19, each first electrode 13
Multistage is partitioned into by multiple second electrodes 14, the bridge a for being arranged at second metal layer electrically connects multistage first electrode.Referring to figure
3, Fig. 3 be the overlooking the structure diagram for the bridge a that the embodiment of the present invention one provides, and the first electrode is electrically connected by the bridge
Connect.
Further, continuing with referring to Fig. 1, the first metal layer is located at black-matrix layer 18 towards the one of the array base palte
Face, blocked by the black-matrix layer, i.e., the layer where first electrode 13 and second electrode 14 be located at black-matrix layer 18 towards
The one side of the array base palte, blocked by the black-matrix layer.
Specifically, the touch screen shown in Fig. 1 can also include：Tft array 21 on array base palte 12, positioned at TFT
Liquid crystal layer 22 on array 21, the conductive frame glue 23 between color filter film 19 and tft array 21, positioned at the and of liquid crystal layer 22
Planarization layer 24 between second metal layer, planarization layer 24 are used to make it that the film surface of color membrane substrates 11 is more flat, made simultaneously
The thickness for obtaining liquid crystal layer 22 is more uniformly distributed.
First electrode 13 and second electrode 14 are respectively positioned in first substrate 11 in the touch screen that the embodiment of the present invention one provides
Side surface is as electromagnetic touch electrode, to be multiplexed first electrode 13 as exemplified by capacitance touching control driving electrodes, with reference to Fig. 4-
Fig. 6 further illustrates that the touch screen that the embodiment of the present invention one provides realizes electromagnetic touch and the connection diagram and work of capacitance touching control
It is described as principle.
Fig. 4 is that the touch screen that the embodiment of the present invention one provides realizes electromagnetic touch and the first connection signal of capacitance touching control
Figure, refers to Fig. 4, and the touch screen also includes electromagnetic touch circuit, capacitance touching control circuit and display driver circuit, wherein, electricity
Magnetic touch-control circuit electrically connects with electromagnetic touch electrode, for receiving electromagnetic induction signal, capacitance touching control circuit and electric capacity driving electricity
Pole electrically connects, and for providing electric capacity drive signal, and capacitance touching control circuit and capacitance touching control induction electrode 15 electrically connect, for connecing
Capacitive sensing signal is received, display driver circuit sends control signal to electromagnetic touch circuit and capacitance touching control circuit respectively, with true
Determine the time point of electromagnetic touch or capacitance touching control.
Show that idle period is commonly referred to as blank (blank) area in touch screen, such as：Sweep the field of one two field picture
It is 60Hz, cycle 16.67ms to retouch frequency, and still, touch screen is when carrying out actual field scan, typically using 11ms~12ms
Just field scan is completed, the remaining period (4.67ms~5.67ms) in field-scanning period is referred to as blank areas, that is, shown
Working time section only takes up 11ms or so times, and the remaining time is used for touch-control.
In the first connection diagram that the touch screen described in Fig. 4 realizes electromagnetic touch and capacitance touching control, when image shows
When showing end, display driver circuit sends control signal to electromagnetic touch circuit and capacitance touching control circuit respectively, informs electricity
Magnetic touch-control circuit touch screen is in blank areas, and electromagnetic touch circuit carries out electromagnetic scanning according to the control signal, judged whether
There is electromagnetic signal input, now capacitance touching control circuit is in high-impedance state, when electromagnetic touch circuit judges have electromagnetic signal input,
The electromagnetic touch report spot scan stage is directly entered until blank ends of extent, in the process, capacitance touching control circuit is in high resistant
State, without communication；When electromagnetic touch circuit judges do not have electromagnetic signal input, electromagnetic touch circuit automatically becomes high-impedance state
And send control signal and give capacitance touching control circuit, control signal residing for the reception of capacitance touching control circuit simultaneously carries out capacitance touching control scanning directly
To blank ends of extent, when carrying out capacitance touching control scanning, electric capacity drive signal is provided by capacitance touching control circuit, the capacitance touching control
Induction electrode 15 receives capacitive sensing signal, realizes that capacitance touching control scans.
It should be noted that using electromagnetic touch as preferential touch control manner in foregoing description, naturally it is also possible to use
Capacitance touching control is as preferential touch control manner, or can also use electromagnetic touch and capacitance touching control while the touch-control being scanned
Mode, wherein, touched using capacitance touching control as the operation principle of preferential touch control manner and using capacitance touching control as preferential
The principle of prosecutor formula is identical, will not be repeated here, and is described below using electromagnetic touch and capacitance touching control while is scanned
The operation principle of touch control manner.
In the first connection diagram that the touch screen described in Fig. 4 realizes electromagnetic touch and capacitance touching control, when image shows
When showing end, display driver circuit sends control signal to electromagnetic touch circuit respectively, informs electromagnetic touch circuit and electricity
Hold touch-control circuit touch screen and be in blank areas, the electromagnetic touch circuit and capacitance touching control circuit are same according to the control signal
When be scanned, determine whether corresponding electromagnetic signal and/or capacitance signal input, herein, because electromagnetic touch is swept
The electrode (i.e. second electrode) not shared with capacitance touching control is used when retouching, capacitance touching control circuit can use viewing area in itself
Interior capacitance touching control driving electrodes carry out a full screen scanning and (use self-capacitance scan mode, whole capacitance touching control driving electrodes
Read once, determine whether that electric capacity drive signal inputs, without test position information), when electromagnetic touch circuit judges
Have that electromagnetic signal inputs and capacitance touching control circuit judges are when having capacitance signal input, then it is preferential to could be arranged to electromagnetic touch,
Or it can also be provided that capacitance touching control is preferential；When electromagnetic touch circuit and capacitance touching control circuit judges only exist a kind of input letter
Number when, then carry out corresponding touch-control scanning；When electromagnetic touch circuit and capacitance touching control circuit judge no signal input, then
This time is without scanning, to reduce the power consumption of touch screen.
Fig. 5 is that the touch screen that the embodiment of the present invention one provides realizes electromagnetic touch and second of connection signal of capacitance touching control
Figure, refers to Fig. 5, and the touch screen also includes electromagnetic touch circuit, capacitance touching control circuit and display driver circuit, wherein：Electricity
Magnetic touch-control circuit electrically connects with electromagnetic touch electrode, and for receiving electromagnetic induction signal, display driver circuit drives with capacitance touching control
Moving electrode electrically connects, and for providing electric capacity drive signal, capacitance touching control circuit electrically connects with capacitance touching control induction electrode, for connecing
Capacitive sensing signal is received, display driver circuit sends control letter to the electromagnetic touch circuit and the capacitance touching control circuit respectively
Number, to determine to carry out the time point of electromagnetic touch or capacitance touching control.
In second of connection diagram that the touch screen described in Fig. 5 realizes electromagnetic touch and capacitance touching control, when image shows
When showing end, display driver circuit sends control signal to electromagnetic touch circuit and capacitance touching control circuit respectively, informs electricity
Magnetic touch-control circuit and capacitance touching control circuit touch screen are in blank areas, and electromagnetic touch circuit is swept according to the control signal
Retouch, determine whether that electromagnetic signal inputs, now capacitance touching control circuit is in high-impedance state, when electromagnetic touch circuit judges have electromagnetism
When signal inputs, the electromagnetic touch report spot scan stage is directly entered until blank ends of extent, in the process, capacitance touching control electricity
Road is in high-impedance state, without communication；When electromagnetic touch circuit judges do not have electromagnetic signal input, electromagnetic touch circuit is automatic
It is changed into high-impedance state and sends control signal giving capacitance touching control circuit, capacitance touching control circuit receives the touching signals and simultaneously carries out electric capacity
Blank ends of extent are known in touch-control scanning, and when capacitance touching control scans, electric capacity drive signal is provided by display driver circuit, and to
Capacitance touching control circuit sends control signal, capacitance touching control circuit scanning capacitance touch-control sensing electrode.
It should be noted that using electromagnetic touch as preferential touch control manner in foregoing description, naturally it is also possible to use
Capacitance touching control is as preferential touch control manner, or can also use electromagnetic touch and capacitance touching control while the touch-control being scanned
Mode, wherein, touched using capacitance touching control as the operation principle of preferential touch control manner and using capacitance touching control as preferential
The principle of prosecutor formula is identical, is realized using the touch control manner that electromagnetic touch and capacitance touching control are scanned and above-mentioned touch screen simultaneously
Electromagnetic touch is identical with the operation principle of the first structure of capacitance touching control, will not be repeated here.
Fig. 6 is that the touch screen that the embodiment of the present invention one provides realizes electromagnetic touch and the third connection signal of capacitance touching control
Figure, refers to Fig. 6, and the touch screen also includes electromagnetic touch circuit, capacitance touching control circuit and display driver circuit, wherein, electricity
Magnetic touch-control circuit electrically connects with electromagnetic touch electrode, for receiving electromagnetic induction signal, and electromagnetic touch circuit and capacitance touching control
Driving electrodes are electrically connected, and for providing electric capacity drive signal, capacitance touching control circuit is electrically connected with capacitance touching control induction electrode, is used for
Capacitive sensing signal is received, display driver circuit sends control signal to electromagnetic touch circuit and capacitance touching control circuit respectively, with
It is determined that carry out the time point of electromagnetic touch or capacitance touching control.
In the third connection diagram that the touch screen shown in Fig. 6 realizes electromagnetic touch and capacitance touching control, when image shows
When showing end, display driver circuit sends control signal to electromagnetic touch circuit and capacitance touching control circuit respectively, informs electricity
Magnetic touch-control circuit and capacitance touching control circuit touch screen are in blank areas, and electromagnetic touch circuit is swept according to the control signal
Retouch, determine whether that electromagnetic signal inputs, now capacitance touching control circuit is in high-impedance state, when electromagnetic touch circuit judges have electromagnetism
When signal inputs, the electromagnetic touch report spot scan stage is directly entered until blank ends of extent, in the process, capacitance touching control electricity
Road is in high-impedance state, without communication；When electromagnetic touch circuit judges do not have electromagnetic signal input, electromagnetic touch circuit is automatic
It is changed into high-impedance state and sends control signal giving capacitance touching control circuit, capacitance touching control circuit receives the touching signals and simultaneously carries out electric capacity
Blank ends of extent are known in touch-control scanning, and when capacitance touching control scans, electric capacity drive signal is provided by electromagnetic touch drive circuit,
And send control signal, capacitance touching control circuit scanning capacitance touch-control sensing electrode to capacitance touching control circuit.
It should be noted that using electromagnetic touch as preferential touch control manner in foregoing description, naturally it is also possible to use
Capacitance touching control is as preferential touch control manner, or can also use electromagnetic touch and capacitance touching control while the touch-control being scanned
Mode, wherein, touched using capacitance touching control as the operation principle of preferential touch control manner and using capacitance touching control as preferential
The principle of prosecutor formula is identical, is realized using the touch control manner that electromagnetic touch and capacitance touching control are scanned and above-mentioned touch screen simultaneously
Electromagnetic touch is identical with the operation principle of the first structure of capacitance touching control, will not be repeated here.
It should also be noted that, realize three kinds of connections of electromagnetic touch and capacitance touching control in the touch screen shown in Fig. 4-Fig. 6
In schematic diagram, when time writer is writer be passive electrical magnetic pen, it is not necessary to provide electromagnetic drive signal to the electromagnetic touch electrode；Work as electricity
Magnetic pen for active electrical magnetic pen when, it is necessary to provide electromagnetic drive signal to the electromagnetic touch electrode.
Optionally, in three kinds of connection diagrams that the touch screen shown in Fig. 4-Fig. 6 realizes electromagnetic touch and capacitance touching control,
Electromagnetic touch circuit is connected with the both ends of electromagnetic touch electrode, and referring to Fig. 7, Fig. 7 is the touch screen that the embodiment of the present invention one provides
The connection diagram of middle electromagnetic touch circuit and electromagnetic touch electrode.One end of capacitance touching control circuit and capacitance touching control induction electrode
Connection, referring to Fig. 8, Fig. 8 is that the connection of capacitance touching control circuit and capacitance touching control induction electrode that the embodiment of the present invention one provides is shown
Be intended to, specifically, capacitance touching control circuit can by flexible PCB (Flexible Printed Circuit, abbreviation FPC) with
One end connection of capacitance touching control induction electrode, the capacitance touching control induction electrode are used for detecting electrode during as capacitance touching control,
Capacitance touching control induction electrode on the outside of first substrate and the capacitive touch on the inside of second substrate towards second substrate one side
Control driving electrodes collective effect and carry out capacitance touching control, capacitance touching control driving electrodes of metal material due to being made, therefore its electricity
Resistance is smaller, can effectively reduce the RC of capacitance touching control driving electrodes, reduces the charging interval, and capacitance touching control induction electrode is simple in construction,
And away from touch screen noise source, be advantageous to improve touch screen signal to noise ratio (SNR), further, since electromagnetic touch electrode use
Metal material is made, and its resistance is smaller, can effectively reduce SNR during electromagnetic touch.
Optionally, in three kinds of connection signals that the touch screen shown in Fig. 4-Fig. 6 realizes electromagnetic touch and capacitance touching control, institute
State display and the capacitance touching control time-sharing work of touch screen；The display of the touch screen and electromagnetic touch time-sharing work；The touch-control
The electromagnetic touch of screen and capacitance touching control time-sharing work, so as to further improve the SNR of touch screen.
The touch screen that the embodiment of the present invention one provides, by the inner surface of first substrate or the inner side table of second substrate
Face sets the multiple first electrodes arranged in the first direction and the multiple second electrodes arranged in a second direction, or in the first base
Plate inner surface sets first electrode, and second electrode is set in second substrate inner surface, by the first electrode and the second electricity
Pole sets multiple capacitance touching control induction electrodes as electromagnetic touch electrode, in first substrate outer surface, wherein, multiplexing described the
One electrode or second electrode are as capacitance touching control driving electrodes so that touch screen can not only normally be shown, and carried out
Extra electromagnetic touch component and capacitive touch component need not be increased during touch-control, it becomes possible to realize display function and electromagnetic touch work(
Can and capacitive touch function, so as to touch-control display panel, to realize display integrated with electromagnetic touch and capacitance touching control, from
And cost, thickness and the weight of touch screen are reduced, and first electrode or second electrode are multiplexed as electric capacity driving electrodes, it is located at
Capacitive sensing electrode structure on the outside of first substrate is simple, so that network complexity reduces, by electromagnetic touch and capacitive touch
The more large scale that extends to of the touch screen of integration is controlled, improves the signal to noise ratio of electromagnetic touch touch screen integrated with capacitance touching control.
Fig. 9 is the cross section structure schematic diagram for the touch screen that the embodiment of the present invention two provides, and the embodiment is with above-described embodiment
Based on one, repeat no more with first embodiment identical part, be with the difference of embodiment one in the present embodiment,
The first metal layer and second metal layer are electrically insulated by organic hyaline membrane 20.
It should be noted that when the first metal layer 16 and second metal layer are electrically insulated by organic hyaline membrane 20, please join
See Fig. 9, the touch screen can also include：Tft array 21 on array base palte 12, the liquid crystal on tft array 21
Layer 22, the conductive frame glue 23 between organic hyaline membrane 20 and tft array 21, between liquid crystal layer 22 and second metal layer
Planarization layer 24, color filter film 19 is also included between second metal layer and planarization layer 24.
The touch screen that the embodiment of the present invention two provides realizes that the connection diagram of electromagnetic touch and capacitance touching control and work are former
Manage connection diagram and operation principle phase that the touch screen provided with the embodiment of the present invention one realizes electromagnetic touch and capacitance touching control
Together, will not be repeated here.
Figure 10 is the cross section structure schematic diagram for the touch screen that the embodiment of the present invention three provides, and the embodiment is with above-described embodiment
Based on, part same as the previously described embodiments repeats no more, and is with the difference of above-described embodiment, the He of first electrode 13
Second electrode 14 is located at different metal levels.
Figure 10 is referred to, the multiple first electrodes 13 arranged in the first direction and multiple second electricity arranged in a second direction
When pole 14 is respectively positioned on 11 inner surface of first substrate, multiple first electrodes 13 and multiple second electrodes 14 are located at the first metal respectively
Layer and second metal layer, are electrically insulated between the first metal layer and second metal layer.Specifically, the first metal layer and the second gold medal
Category layer can be electrically insulated by the color filter film 19 or organic hyaline membrane 20 being arranged between the first metal layer and second metal layer.
When first electrode 13 and second electrode 14 are located at different metal levels, it is not necessary to which bridge is set.
The touch screen that the embodiment of the present invention three provides realizes that the connection diagram of electromagnetic touch and capacitance touching control and work are former
The touch screen that reason provides with the above embodiment of the present invention realizes electromagnetic touch and the connection diagram and operation principle of capacitance touching control
It is identical, it will not be repeated here.
Figure 11 is the cross section structure schematic diagram for the touch screen that the embodiment of the present invention four provides, and refers to Figure 11, the present embodiment
The touch screen of offer includes：The first substrate 11 and second substrate 12 being oppositely arranged, multiple first electricity arranged in the first direction
Pole 13 and the multiple second electrodes 14 arranged in a second direction are respectively positioned on the inner surface of second substrate 12, first electrode 13 and
Two electrodes 14 are used as electromagnetic touch electrode, positioned at multiple capacitance touching control induction electrodes 15 of the outer surface of first substrate 11, wherein,
It is multiplexed first electrode 13 or second electrode 14 is used as capacitance touching control driving electrodes.
Optionally, the first direction and second direction are mutually perpendicular to, the electromagnetic touch induction electrode and the electric capacity
Touch-control driving electrodes are mutually perpendicular to, and the electromagnetic touch electrode is different from the material of capacitance touching control induction electrode 15, the electromagnetism
The material of touch control electrode is metal material, and the material of the capacitance touching control induction electrode is transparent conductive material or metal grill,
Wherein, transparent conductive material can be any one in indium tin oxide (ITO), indium-zinc oxide (IZO) or their group
Close.
Optionally, Figure 11 is referred to, first substrate 11 is color membrane substrates, and second substrate 12 is array base palte, multiple first
Electrode 13 and multiple second electrodes 14 can be located at the first metal layer and electrically insulated from one another, i.e. first electrode 13 and second electrode 14
In same layer, in first electrode 13 and the infall of second electrode 14, first electrode 13 is by being arranged at the bridge a of second metal layer
Electrical connection, it is preferred that the first metal layer and second metal layer are electrically insulated by color filter film 19.
It will be understood by those skilled in the art that touch screen described herein is used only for explaining the present invention, rather than to this
The restriction of invention.Figure 11 is to have enumerated the form that touch screen structure and electrode are set, and it can only be this kind of structure not represent,
Do not represent comprising each part shown in figure, also not indicating that can only use such a electrode to set, for example, arranging in the first direction
Multiple first electrodes 13 of row and the multiple second electrodes 14 arranged in a second direction are respectively positioned on the inner surface of second substrate 12,
First electrode 13 and second electrode 14 are located at different metal levels respectively, and are electrically insulated between different metal levels, therefore, should not
The limitation to the embodiment of the present invention is used as using the schematic structure in Figure 11.
It should be noted that first substrate 11, second substrate 12, first electrode 13, are schematically marked in Figure 11
Two electrodes 14, bridge a, capacitance touching control induction electrode 15 and the liquid crystal layer being clipped between first substrate 11 and second substrate 12
40, because the structure of touch screen can be with a variety of, therefore, the film layer between first substrate 11 and second substrate 12 can also be more
Sample, the specific film layer or structure between first substrate 11 and second substrate 12 is refined in the present embodiment, as long as
First electrode 13 and second electrode 14 are used as electromagnetic touch electrode, are multiplexed the first electrode or second electrode as capacitance touching control
Driving electrodes, capacitance touching control induction electrode 15 are located at the outer surface of first substrate 11, i.e., above-mentioned middle capacitance touching control induction electrode position
In the top of capacitance touching control driving electrodes.Therefore, the limitation to the present embodiment structure should not be used as using Figure 11.Also, it is
Clearly the emphasis of reflection the present embodiment, Tu11Zhong, the uncorrelated film layer between the first substrate and second substrate are all corresponding
Omit, the present embodiment should not be limited with this.
The touch screen that the embodiment of the present invention four provides realizes that the connection diagram of electromagnetic touch and capacitance touching control and work are former
Manage connection diagram and operation principle phase that the touch screen provided with the embodiment of the present invention one realizes electromagnetic touch and capacitance touching control
Together, will not be repeated here.
Figure 12 is the cross section structure schematic diagram for the touch screen that the embodiment of the present invention five provides, and refers to Figure 12, the present embodiment
The touch screen of offer includes：The first substrate 11 and second substrate 12 being oppositely arranged, multiple first electricity arranged in the first direction
Pole 13 is located at the inner surface of first substrate 11, and the multiple second electrodes 14 arranged in a second direction are located at the inner side table of second substrate 12
Face, first electrode 13 and second electrode 14 are used as electromagnetic touch electrode, positioned at multiple capacitive touch of the outer surface of first substrate 11
Induction electrode is controlled, wherein, it is multiplexed first electrode 13 or second electrode 14 is used as capacitance touching control driving electrodes.
Optionally, the first direction and second direction are mutually perpendicular to, the electromagnetic touch induction electrode and the electric capacity
Touch-control driving electrodes are mutually perpendicular to, and the electromagnetic touch electrode is different from the material of capacitance touching control induction electrode 15, the electromagnetism
The material of touch control electrode is metal material, and the material of the capacitance touching control induction electrode is transparent conductive material or metal grill,
Wherein, transparent conductive material can be any one in indium tin oxide (ITO), indium-zinc oxide (IZO) or their group
Close.
Optionally, Figure 12 is referred to, first substrate 11 is color membrane substrates, and second substrate 12 is array base palte, multiple first
Electrode 13 is located at color membrane substrates inner surface, and can be electrically insulated between multiple first electrodes 13 by color filter film 19,
Multiple second electrodes 14 are located at the array base palte inner surface.
It should be noted that first substrate 11, second substrate 12, first electrode 13, are schematically marked in Figure 12
Two electrodes 14, capacitance touching control induction electrode 15, color filter film 19 and it is clipped between first substrate 11 and second substrate 12
Liquid crystal layer 40, because the structure of touch screen can be with a variety of, therefore, the film layer between first substrate 11 and second substrate 12
The specific film layer or structure between first substrate 11 and second substrate 12 can not carried out with various, in the present embodiment thin
Change, as long as first electrode 13 and second electrode 14 are used as electromagnetic touch electrode, be multiplexed first electrode or the second electrode conduct
Capacitance touching control driving electrodes, capacitance touching control induction electrode 15 are located at the outer surface of first substrate 11, i.e., above-mentioned middle capacitance touching control sense
Electrode is answered to be located at the top of capacitance touching control driving electrodes.Therefore, the limitation to the present embodiment structure should not be used as using Figure 12.
Also, clearly to reflect the emphasis of the present embodiment, Tu12Zhong, the uncorrelated film layer between the first substrate and second substrate is all
Accordingly omit, the present embodiment should not be limited with this.
The touch screen that the embodiment of the present invention five provides realizes that the connection diagram of electromagnetic touch and capacitance touching control and work are former
Manage connection diagram and operation principle phase that the touch screen provided with the embodiment of the present invention one realizes electromagnetic touch and capacitance touching control
Together, will not be repeated here.
Figure 13 is the flow chart of the driving method for the touch screen that the embodiment of the present invention six provides, to be carried to above-described embodiment
The touch screen of confession is driven, and the touch screen includes：The first substrate and second substrate being oppositely arranged, are arranged in the first direction
Multiple first electrodes and multiple second electrodes for arranging in a second direction be respectively positioned on the inner surface of first substrate, or equal position
It is located at first substrate inner surface in the inner surface of second substrate, or first electrode, second electrode is located in second substrate
Side surface；The first electrode and second electrode are as electromagnetic touch electrode；Positioned at the multiple of the first substrate outer surface
Capacitance touching control induction electrode, wherein, the first electrode or second electrode are multiplexed as capacitance touching control driving electrodes.
Figure 13 is referred to, the driving method of the touch-control includes：
Step 21, from the electromagnetic touch electrode gather electromagnetic induction signal, to realize electromagnetic touch function.
In this step, it is the touch screen one time writer (or electromagnetism pointer) of collocation.If time writer is active electrical
Magnetic pen, then electromagnetic touch electrode inductive electromagnetic touching signals, and produce induced-current；If time writer is writer be passive electrical magnetic pen,
Then need to provide electromagnetic drive signal to the electromagnetic touch electrode, specifically, electromagnetic touch induction electrode can be first by electromagnetism
Touch-control circuit provides electromagnetic drive signal, then electromagnetic touch induction electrode inductive electromagnetic touching signals, and produce induced electricity again
Stream.Illustrated below by taking writer be passive electrical magnetic pen as an example.
Writer be passive electrical magnetic pen is built-in with resonance circuit.Touch screen injects power into passive electromagnetic by launching frequency electromagnetic waves
Pen, then electromagnetic touch signal is back to touch screen by writer be passive electrical magnetic pen, now touch screen stops sending electromagnetic wave, and switches to
Mode of electromagnetic wave is received, when nearby having time writer, electromagnetic induction will occur for the electromagnetic touch electrode in touch screen, for electromagnetism
The second electrode of the first electrode of the first direction of touch-control and second direction produces induced-current, according to the induced-current so as to
The coordinate of the first direction of writer be passive electrical magnetic pen position and the coordinate of second direction can be determined.Specifically, can be in touch-control
First detection circuit and the second detection circuit are set in screen, and the first detection circuit is used to sense induced-current caused by first electrode
And the coordinate of the first direction of writer be passive electrical magnetic pen position is obtained by processing, the second detection circuit is used to sense second electrode
Caused induced-current and the coordinate that the second direction of writer be passive electrical magnetic pen position is obtained by processing, obtain writer be passive electrical magnetic pen
After the first direction coordinate and second direction coordinate of position, it becomes possible to determine the position of writer be passive electrical magnetic pen.
Step 22, to the capacitance touching control driving electrodes provide electric capacity drive signal.
In this step, the capacitance touching control drive signal can be provided by electromagnetic touch circuit, or by capacitance touching control electricity
Road provides, or is provided by display driver circuit.
When the capacitance touching control drive signal is provided by electromagnetic touch circuit or display driver circuit, the capacitance touching control
Circuit only needs to gather capacitive sensing signal, when the capacitance touching control driving electrodes are provided by capacitance touching control circuit, the electricity
Holding touch-control circuit both needs to provide electric capacity drive signal, needs to gather capacitive sensing signal again.
Step 23, using capacitance touching control circuit from the capacitance touching control induction electrode gather capacitive sensing signal, with realize
Capacitive touch function, wherein, the display driver circuit sends control letter to the electromagnetic touch circuit and capacitance touching control circuit
Number, to determine to carry out the time point of electromagnetic touch or capacitance touching control.
In this step, capacitive sensing signal is gathered from capacitance touching control induction electrode using capacitance touching control circuit, according to electricity
The change for holding induced signal determines to carry out the position of capacitance touching control.
In the present embodiment, the display driver circuit sends control to the electromagnetic touch circuit and capacitance touching control circuit
Signal, to determine to carry out the time point of electromagnetic touch or capacitance touching control, inform that electromagnetic touch circuit touch screen is in blank areas,
Electromagnetic touch circuit carries out electromagnetic scanning according to the control signal, determines whether that electromagnetic signal inputs, now capacitance touching control
Circuit is in high-impedance state, when electromagnetic touch circuit judges have electromagnetic signal input, is directly entered electromagnetic touch report spot scan rank
Section is until blank ends of extent, and in the process, capacitance touching control circuit is in high-impedance state, without communication；When electromagnetic touch circuit
When judging no electromagnetic signal input, electromagnetic touch circuit, which automatically becomes high-impedance state and sends control signal, gives capacitance touching control electricity
Road, control signal residing for the reception of capacitance touching control circuit simultaneously carry out capacitance touching control scanning until blank ends of extent, carry out capacitance touching control
During scanning, illustrated so that electric capacity drive signal is provided by capacitance touching control circuit as an example, electric capacity drive signal is by capacitance touching control electricity
Road provides, and the capacitance touching control induction electrode receives capacitive sensing signal, realizes that capacitance touching control scans.
It should be noted that using electromagnetic touch as preferential touch control manner in foregoing description, naturally it is also possible to use
Capacitance touching control is as preferential touch control manner, or can also use electromagnetic touch and capacitance touching control while the touch-control being scanned
Mode, wherein, touched using capacitance touching control as the operation principle of preferential touch control manner and using capacitance touching control as preferential
The principle of prosecutor formula is identical, the operation principle for the touch control manner being scanned simultaneously using electromagnetic touch and capacitance touching control and implementation
Touch screen realizes that electromagnetic touch is identical with the operation principle of the first structure of capacitance touching control in example one, will not be repeated here.
Preferably, the display of the touch screen and capacitance touching control time-sharing work；And display and the electromagnetism of the touch screen
Touch-control time-sharing work；The electromagnetic touch of the touch screen and capacitance touching control time-sharing work.
The driving method for the touch screen that the embodiment of the present invention six provides, when carrying out touch-control need not increase extra electromagnetism touches
Control component and capacitive touch component, it becomes possible to display function and electromagnetic touch function and capacitive touch function are realized, so as to touch
It is integrated with electromagnetic touch and capacitance touching control that control display panel realizes display, so as to reduce the cost of touch screen, thickness
And weight, and first electrode or second electrode are multiplexed as electric capacity driving electrodes, the capacitive sensing electricity on the outside of first substrate
It is extremely simple in construction, so that network complexity reduces, by extending to for the electromagnetic touch touch screen integrated with capacitance touching control
More large scale, improve the signal to noise ratio of electromagnetic touch touch screen integrated with capacitance touching control.
Pay attention to, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other more equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (15)
1. a kind of touch screen, including：
The first substrate and second substrate being oppositely arranged；
The multiple first electrodes arranged in the first direction and the multiple second electrodes arranged in a second direction are respectively positioned on first substrate
Inner surface, or be respectively positioned on the inner surface of second substrate；The first electrode and second electrode are as electromagnetic touch electricity
Pole；
Positioned at multiple capacitance touching control induction electrodes of the first substrate outer surface；
Wherein, the first electrode or second electrode are multiplexed as capacitance touching control driving electrodes；
The material for forming the electromagnetic touch electrode is metal material；
The first electrode and the second electrode are located at same layer and insulation is arranged in a crossed manner.
2. touch screen according to claim 1, it is characterised in that the first direction and the second direction are mutually hung down
Directly, the bearing of trend of the bearing of trend of the capacitance touching control driving electrodes and the capacitance touching control induction electrode is mutually perpendicular to.
3. touch screen according to claim 2, it is characterised in that：
The first substrate is color membrane substrates, and the second substrate is array base palte；The color membrane substrates are included positioned at described the
Black-matrix layer on the inside of one substrate；
When the multiple first electrodes arranged in the first direction and the multiple second electrodes arranged in a second direction are respectively positioned on the first base
During the inner surface of plate, the first electrode, second electrode and capacitance touching control driving electrodes are covered in the black matrix" aspect
To the one side of the array base palte.
4. touch screen according to claim 3, it is characterised in that when the multiple first electrodes arranged in the first direction and edge
Multiple second electrodes of second direction arrangement are respectively positioned on first substrate inner surface, or are respectively positioned on the inner surface of second substrate
When, the multiple first electrode and multiple second electrodes are located at the first metal layer and electrically insulated from one another, in the first electrode and
Second electrode infall, the first electrode are electrically connected by being arranged at the bridge of second metal layer.
5. touch screen according to claim 4, it is characterised in that the first metal layer and the second metal layer pass through
Color filter film or organic hyaline membrane electric insulation.
6. touch screen according to claim 4, it is characterised in that when the multiple first electrodes arranged in the first direction and edge
When multiple second electrodes of second direction arrangement are respectively positioned on first substrate inner surface, the first metal layer is located at the black
Matrix layer is blocked towards the one side of the array base palte by the black-matrix layer.
7. touch screen according to claim 1, it is characterised in that also including electromagnetic touch circuit, capacitance touching control circuit and
Display driver circuit, wherein：
The electromagnetic touch circuit electrically connects with the electromagnetic touch electrode, for receiving electromagnetic induction signal；
The capacitance touching control circuit electrically connects with the capacitance touching control driving electrodes, for providing electric capacity drive signal, and it is described
Capacitance touching control circuit and the electrical connection of capacitance touching control induction electrode, for receiving capacitive sensing signal；
The display driver circuit sends control signal to the electromagnetic touch circuit and the capacitance touching control circuit respectively, with true
Surely the time point of electromagnetic touch or capacitance touching control is carried out.
8. touch screen according to claim 1, it is characterised in that also including electromagnetic touch circuit, capacitance touching control circuit and
Display driver circuit, wherein：
The electromagnetic touch circuit electrically connects with the electromagnetic touch electrode, for receiving electromagnetic induction signal；
The display driver circuit electrically connects with the capacitance touching control driving electrodes, for providing electric capacity drive signal；
The capacitance touching control circuit electrically connects with the capacitance touching control induction electrode, for receiving capacitive sensing signal；
The display driver circuit sends control signal to the electromagnetic touch circuit and the capacitance touching control circuit respectively, with true
Surely the time point of electromagnetic touch or capacitance touching control is carried out.
9. touch screen according to claim 1, it is characterised in that also including electromagnetic touch circuit, capacitance touching control circuit and
Display driver circuit, wherein：
The electromagnetic touch circuit electrically connects with the electromagnetic touch electrode, for receiving electromagnetic induction signal, and the electromagnetism
Touch-control circuit and capacitance touching control driving electrodes electrical connection, for providing electric capacity drive signal；
The capacitance touching control circuit electrically connects with the capacitance touching control induction electrode, for receiving capacitive sensing signal；
The display driver circuit sends control signal to the electromagnetic touch circuit and the capacitance touching control circuit respectively, with true
Surely the time point of electromagnetic touch or capacitance touching control is carried out.
10. according to the touch screen described in claim 7 or 8 or 9, it is characterised in that：
The electromagnetic touch circuit is connected with the both ends of the electromagnetic touch electrode.
11. according to the touch screen described in claim 7 or 8 or 9, it is characterised in that the display of the touch screen and capacitance touching control
Time-sharing work；The display of the touch screen and electromagnetic touch time-sharing work；The electromagnetic touch of the touch screen and capacitance touching control point
When work.
12. a kind of driving method of touch screen, it is characterised in that the touch screen is any described touch-controls of claim 1-11
Screen, the driving method include：
Electromagnetic induction signal is gathered from the electromagnetic touch electrode, to realize electromagnetic touch function；
Electric capacity drive signal is provided to the capacitance touching control driving electrodes；
Capacitive sensing signal is gathered from the capacitance touching control induction electrode using capacitance touching control circuit, to realize capacitance touching control work(
Energy；
Wherein, display driver circuit sends control signal to the electromagnetic touch circuit and capacitance touching control circuit, to determine to carry out
The time point of electromagnetic touch or capacitance touching control.
13. the driving method of touch screen according to claim 12, it is characterised in that the driving method of the touch screen is also
Including：
Electromagnetic drive signal is provided to the electromagnetic touch electrode.
14. the driving method of touch screen according to claim 12, it is characterised in that the capacitance touching control drive signal by
Electromagnetic touch circuit provides, and is either provided by capacitance touching control circuit or is provided by display driver circuit.
15. the driving method of touch screen according to claim 12, it is characterised in that the display of the touch screen and electric capacity
Touch-control time-sharing work；And the display of the touch screen and electromagnetic touch time-sharing work；The electromagnetic touch of the touch screen and electricity
Hold touch-control time-sharing work.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104484071B (en) | 2014-12-25 | 2018-01-02 | 上海天马微电子有限公司 | A kind of contact panel and contactor control device and its driving method |
| CN105138183B (en) * | 2015-09-25 | 2019-05-03 | 敦泰电子有限公司 | A kind of electronic equipment with pressure detecting function |
| CN109085949B (en) * | 2018-07-27 | 2021-08-03 | 上海天马微电子有限公司 | Array substrate and display device |
| CN113050831B (en) * | 2021-03-17 | 2023-07-04 | 深圳市华星光电半导体显示技术有限公司 | Touch control device |
| CN113568531B (en) * | 2021-07-30 | 2024-03-15 | Tcl华星光电技术有限公司 | Touch display panel and touch display device |
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