CN104077996B - A kind of gate driver circuit and display floater, display device - Google Patents
A kind of gate driver circuit and display floater, display device Download PDFInfo
- Publication number
- CN104077996B CN104077996B CN201410322865.XA CN201410322865A CN104077996B CN 104077996 B CN104077996 B CN 104077996B CN 201410322865 A CN201410322865 A CN 201410322865A CN 104077996 B CN104077996 B CN 104077996B
- Authority
- CN
- China
- Prior art keywords
- signal
- grid
- modulating unit
- display floater
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention provides a kind of band gate driver circuit from the display floater holding touch controllable function, described drive circuit includes: driver element, and described driver element is used for receiving multiple input signal, generates and export first grid signal；Modulating unit, including controlling end, first input end, the second input and outfan；Wherein, described first input end receives described first grid signal, and described second input receives modulated signal, and described control end receives control signal, described outfan output second grid signal；Described modulating unit chooses whether to be modulated described first grid signal by described modulated signal according to the control signal received, and exports described second grid signal, described from the load held to reduce.Present invention also offers a kind of display floater comprising above-mentioned gate driver circuit and display device, reduce the impact that it is caused by the parasitic capacitance of described panel or device, improve its performance.
Description
Technical field
The present invention relates to touch-control field, particularly relate to a kind of band grid from the display floater holding touch controllable function
Drive circuit and display floater, display device.
Background technology
Currently, in display floater field, the display floater of band touch controllable function has increasingly becomed main flow
Display product, occurs in that the integration mode of various display floater and contact panel, is of a great variety, example
Such as embedded (incell), the outer formula (oncell) of box and external hanging type.On the other hand, if from operation principle
On classify, the display floater of band touch controllable function can be roughly divided into again condenser type, resistance-type, red
Outer formulas etc., wherein capacitance type touch control display panel mainly includes self-capacitance and mutual capacitance type two types.
The most each have their own Pros and Cons of each type of touch-control display panel.Such as, based on self-capacitance embedded
Formula display floater would commonly be used for the electrode of touch-control and is arranged on the inside of display floater outermost layer substrate, thus,
Integral thickness is less, more frivolous.
But, in actual use, owing to touch control electrode is arranged in display floater.Therefore touch control electrode with
The distance between other electrodes in display floater is closer to, say, that touch control electrode and other electrodes
The unnecessary parasitic capacitance produced between (such as grid) the most therefore becomes big.Generally, for reducing display
The thickness of panel, is multiplexed with touch control electrode by public electrode.As it is shown in figure 1, common electrode layer is divided
Becoming multiple fritter, when needs realize touch controllable function, each fritter is received by cabling or sends touch-control
Signal, it is achieved touch controllable function；When needs realize common electrode layer, each fritter receives public affairs according to demand
Common voltage, as common electrode layer.Therefore, touch control electrode (namely public electrode) and other electrode (example
Such as grid) between parasitic capacitance increase, the load capacitance equivalent of from electric capacity adds, and affects touch-control
The overall performance of electrode.
Summary of the invention
The technical problem to be solved is how to reduce the self-capacitance of described touch-control display panel
Load and do not increase processing step.
For solving problem above, the invention provides a kind of gate driver circuit, tactile from holding for drive belt
The display floater of control function, described drive circuit includes: driver element, and described driver element is used for receiving
Multiple input signals, generate and export first grid signal；Modulating unit, including controlling end, first defeated
Enter end, the second input and outfan；Wherein, described first input end receives described first grid signal,
Described second input receives modulated signal, and described control end receives control signal, and described outfan exports
Second grid signal；Described modulating unit chooses whether by described modulation according to the control signal received
Described first grid signal is modulated by signal, and exports second grid signal, described from holding to reduce
Load.
Preferably, described modulated signal, when described control signal is effective, is exported by described modulating unit
The outfan of described modulating unit, as second grid signal.
Preferably, described modulating unit includes a thin film transistor (TFT), and the control end of described modulating unit is
The grid of described thin film transistor (TFT), the first input end of described modulating unit couples the defeated of described modulating unit
Going out end, first pole that the second input is described thin film transistor (TFT) of described modulating unit, described thin film is brilliant
Second pole of body pipe is coupled to the outfan of described modulating unit.
Preferably, described modulating unit includes that gating circuit and add circuit, described gating circuit pass through institute
The control end stating modulating unit receives described control signal, by the second input termination of described modulating unit
Receive described modulated signal, and when described control signal is effective, described modulated signal is exported to described addition
Circuit；Described add circuit receives described first grid signal by the first input end of described modulating unit,
And the modulated signal exported by described gating circuit is overlapped with described first grid signal, and pass through institute
The outfan stating modulating unit exports described second grid signal.
Preferably, described gating circuit is thin film transistor (TFT), and the grid of described thin film transistor (TFT) is described tune
The control end of unit processed, the second input of the first the most described modulating unit of described thin film transistor (TFT),
Second pole of described thin film transistor (TFT) is coupled to a signal input part of described add circuit.
Present invention also offers a kind of display floater, including first substrate and the second base of arranging corresponding thereto
Plate, wherein said first substrate includes any of the above-described gate driver circuit and grid, described display floater
Also include the touch control electrode layer being positioned on described first substrate or described second substrate, described touch control electrode
Layer forms parasitic capacitance with described grid.
Preferably, described touch control electrode layer is common electrode layer, and described common electrode layer comprises multiple independence
Public electrode block, each described public electrode block is received by the cabling that is connected electrically or sends touch-control
Signal.
Preferably, described first substrate is tft array substrate, and described display floater is along printing opacity direction successively
Including: grid layer, the grid that described grid layer includes described TFT and the gate line being connected electrically；Have
Active layer；Source-drain electrode layer, described source-drain electrode layer comprises source electrode and the drain electrode of described TFT, and with described source
The data wire of pole electrical connection；Insulating barrier；Described common electrode layer；Planarization layer；And pixel electrode layer,
Including multiple pixel electrodes, the drain electrode of described TFT electrically connects with a pixel electrode.
Preferably, the frame time cycle driving the gate driver circuit of described display floater comprises the display phase
Between and touch-control during, wherein:
During described display, described gate driver circuit exports described second grid signal, it is achieved institute
Stating the display function of display floater, described control signal is invalid；
During described touch-control, described gate driver circuit exports described second grid signal, it is achieved institute
Stating the touch controllable function of display floater, described control signal is effective.
Preferably, during described touch-control in, described second grid signal is consistent with described touching signals.
Present invention also offers a kind of display device, including any of the above-described described display floater.
Use the present invention band from hold the gate driver circuit of display floater of touch controllable function, display floater,
Display device is not in the case of increasing processing step, it is possible to reduce the self-capacitance of described touch-control display panel
Load (parasitic capacitance) so that the performance of described touch-control display panel is more preferable.
Accompanying drawing explanation
Fig. 1 is a kind of common electrode layer schematic diagram as touch control electrode；
Fig. 2 is the equivalent circuit diagram of self-capacitance；
Fig. 3 is the gate driver circuit schematic diagram of the embodiment of the present invention one；
Fig. 4 is described touching signals and the sequential chart of second grid signal；
Fig. 5 is the schematic diagram of the gate driver circuit of embodiment two；
Fig. 6 a and Fig. 6 b is the schematic diagram of the gate driver circuit of embodiment three；
Fig. 7 is the schematic diagram of driver element described in the embodiment of the present invention；
Fig. 8 a is the vertical view equivalent schematic of the display floater of embodiment four；
Fig. 8 b is the partial cutaway schematic irising out part in Fig. 8 a；
Fig. 9 is first grid signal and the sequential of control signal of the gate driver circuit of the embodiment of the present invention
Figure.
Detailed description of the invention
Understandable, below in conjunction with the accompanying drawings for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from
The detailed description of the invention of the present invention is described in detail.
Elaborate a lot of detail in the following description so that fully understanding the present invention, but this
Bright other can also be used to be different from alternate manner described here implement, therefore the present invention is not by following
The restriction of disclosed specific embodiment.
For reducing the self-capacitance one load of touch-control display panel in prior art, i.e. reduce touch control electrode (public
Common electrode) and the parasitic capacitance of grid formation, it will usually go out from the angle of the position of public electrode, film layer
Sending out, account for, general technology method is by forming specific structure between public electrode and grid
Solve the problem that between public electrode and grid, the parasitic capacitance of formation is excessive.Sometimes, also can be by closing
And processing step or jointly certain certain films Rotating fields reach not increase the premise of one light shield technique
Under, reduce the parasitic capacitance formed between public electrode and grid.Industry for such a technical problem,
The technical standpoint being usually taken be all be confined to the structure of electrode or technique is made itself.
Inventor have passed through deep thinking, jumps out the inertial thinking of original thinking model and industry, off the beaten track,
A kind of technical scheme is proposed, to solving this technical problem from another angle.This little pendulum of starting with itself
Take off the inertial thinking of conventional art personnel, there is novelty.
In the touch-control display panel of self-capacitance, can be by detection touch control electrode (common electrode layer)
Self-capacitance (namely direct-to-ground capacitance) whether change, judge whether current location has touch.But it is real
The touch-control display panel on border exists various parasitic capacitance, is wherein touch-control than major parasitic capacitance
The parasitic capacitance formed between electrode (public electrode) and grid.Fig. 2 is its equivalent schematic diagram, Fig. 2
In, defining self-capacitance C between public electrode com and ground GND, public electrode com also can simultaneously
And between grid gate, form parasitic capacitance Cjs, and self-capacitance C-shaped is become by this parasitic capacitance Cjs undoubtedly
Noise.Think after inventor's research, if the electromotive force of the two poles of the earth A with B of parasitic capacitance Cjs is consistent, that
Described parasitic capacitance Cjs just can equivalence be considered as not existing, the most just can be organic in the most additionally interpolation one layer
In the case of film layer, effectively reduce the public electrode com parasitic capacitance to grid gate, namely reduce tactile
The load capacitance of control electrode.
Concrete, can give at described touch-control display panel within the time cycle realizing touch controllable function
Described grid gate applying one and the signal of telecommunication as the touching signals of touch control electrode carrying so that institute
The electromotive force of the two poles of the earth A with B stating parasitic capacitance Cjs is the same, can make realizing described touch controllable function
In time cycle, described parasitic capacitance Cjs equivalence is considered as not existing, thus reduces the load of self-capacitance.Cause
This, need to apply one to corresponding gate driver circuit (such as ASG, amorphoussilicongate)
The individual signal of telecommunication, within the time cycle realizing touch controllable function, allows described gate driver circuit export with described
The signal of telecommunication that touching signals is same.
It is specifically described below by different implementations.
Embodiment one
Present embodiments provide a kind of band gate driver circuit from the display floater holding touch controllable function, such as Fig. 3
Shown in, described drive circuit includes: driver element 11, is used for receiving multiple input signal Si n, generates also
Output first grid signal S1；Modulating unit 12, including control end 120, first input end 121, the
Two inputs 122 and outfan 123；Wherein, first input end 121 receives first grid signal S1,
Second input 122 receives modulated signal Sa, controls end 120 and receives control signal Sc, outfan 123
Output second grid signal S2.Modulating unit 12 chooses whether to pass through according to control signal Sc received
First grid signal S1 is modulated by modulated signal Sc, and exports second grid signal S2, to reduce
Described from the load held.
Wherein, first grid signal S1 be the various signals received according to gate driver circuit generate former
Beginning gate drive signal, in the display floater not having integrated touch controllable function, signal S1 is permissible for first grid
It is directly used in each bar gate line of driving.Second grid signal S2 can be with described band from holding the aobvious of touch controllable function
Showing that the touching signals that panel provides is consistent, it is identical that " unanimously " described here includes that the two signal has
Waveform, frequency, amplitude, phase place.It can be appreciated that realize described touch-control merit at described display floater
In the time of energy, any time, the voltage (including voltage swing, voltage-phase etc.) of the two signal
The most identical.Such as in described display floater needs the time realizing touch controllable function, as shown in Figure 4, institute
The drive cycle stating gate line can be divided into first period T1 and second phase T2, in first period T1,
Described band touch control electrode in the display floater holding touch controllable function sends driving signal, described touch control electrode
It is electrically charged；In second phase T2, described band touch control electrode in the display floater holding touch controllable function connects
Receiving detection signal, described touch control electrode is discharged.Then corresponding, within described first period, the
Two signals S2 can be with described touching signals Stp waveform in first period T1, amplitude etc.
Cause, for example, high level；In described second phase T2, second grid signal S2 also with described touch-control
Signal Stp waveform in second phase T2, amplitude etc. are consistent, for example, low level.
So, due to the voltage one on the voltage on the grid in described display floater and described touch control electrode
Causing, therefore the two-stage electromotive force in described parasitic capacitance is equal, then described parasitic capacitance can be considered as in equivalence
Do not exist, thus reduce the load of self-capacitance so that described band is from the display floater of appearance touch controllable function
Performance is more preferably.Additionally, prior art is in order to reduce the load of self-capacitance, it is usually taken at grid and touch-control
Increase by one layer of organic film between electrode, and the embodiment of the present invention makes the parasitic capacitance of described display floater
Impact substantially reduce, even if the most additionally increasing this layer of organic film, also it doesn't matter, thus simple
Change process complexity.
It should be noted that control signal Sc here and modulated signal Sa specifically what signal, and
Do not limit.As long as being capable of, in the case of control signal Sc is effective, modulated signal Sa to be passed through
Modulating unit 12 can be exported and described second grid signal S2 consistent for touching signals Stp.
Those skilled in the art can take specific circuit to realize according to the technological know-how grasped accordingly
State the function of modulating unit.Reason about second grid signal S2 with described touching signals Stp " consistent "
Solve, with reference to discussing above.
Optionally, modulating unit 12, can be directly by modulated signal when described control signal Sc is effective
Sa exports the outfan 123 of modulating unit 12, as second grid signal S2.
Embodiment two
The present embodiment is a kind of refinement to embodiment one.
Concrete, as it is shown in figure 5, modulating unit 12 can include a thin film transistor (TFT) 124, modulation
The grid that control end 120 is thin film transistor (TFT) 124 of unit 12, the first input end of modulating unit 12
121 outfans 123 coupling modulating unit 12, the second input 122 of modulating unit 12 is that thin film is brilliant
First pole of body pipe 124, the second pole of thin film transistor (TFT) 124 is coupled to the outfan 123 of modulating unit 12.
Wherein, couple and both can represent directly electrical connection, it is also possible to represent that Indirect Electro connects.
Here, the first pole of thin film transistor (TFT) 124 and the second pole are its source electrode and drain electrode respectively the most where
Individual be source electrode which be that drain electrode depends on that the type of thin film transistor (TFT) 124 is p-type or N-type, at this not
Limit.Therefore, for N-type TFT (thin film transistor, TFT), control is worked as
When signal Sc processed is high level, Sc is useful signal, and thin film transistor (TFT) 124 is opened, modulated signal Sa
The incoming outfan 123 to modulating unit 12 of thin film transistor (TFT) 124 can be passed through；When control signal Sc is
During low level, Sc is invalid signals, and thin film transistor (TFT) 124 turns off, and modulated signal Sa cannot be incoming to adjusting
The outfan 123 of unit 12 processed.In like manner, for P-type TFT, when control signal Sc
During for low level, Sc is useful signal, and thin film transistor (TFT) 124 is opened, and modulated signal Sa can be by thin
The incoming outfan 123 to modulating unit 12 of film transistor 124；When control signal Sc is high level,
Sc is invalid signals, and thin film transistor (TFT) 124 turns off, and modulated signal Sa cannot be incoming to modulating unit 12
Outfan 123.
When control signal Sc is invalid, thin film transistor (TFT) 124 is off, now first grid signal S1
Can be directly by the outfan 123 of modulating unit 12 after entering the first input end 121 of modulating unit 12
Output, becomes second grid signal S2, thus drives described gate line, makes described band from holding touch controllable function
Display floater can realize display function normally.When control signal Sc of modulating unit 12 is effective,
Directly modulated signal Sa can be exported the outfan 123 of modulating unit 12, as second grid signal
S2, now consistent, therefore with the touching signals Stp in described touch control electrode due to second grid signal S2
So that the parasitic capacitance Cjs equivalence in Fig. 2 is considered as not existing, thus reduce the load of self-capacitance.
It follows that modulated signal Sa will export the defeated of modulating unit 12 by thin film transistor (TFT) 124
Go out end 123, jointly act on first grid signal S1, form second grid signal S2.Therefore can root
According to parameters such as the waveform of second grid signal S2 wanting to obtain, frequency, amplitude, phase places, set modulation
Each parameters such as the waveform of signal Sa, frequency, amplitude, phase place, to guarantee realizing any of touch controllable function
Moment.Such as, within the time realizing touch controllable function, a certain moment, the output of first grid signal S1
Voltage is-10V, and now needing the voltage of the second grid signal S2 of output is-6V, then the most permissible
Set the voltage of modulated signal Sa output in this moment as 4V.Certainly, it is the most only to come with voltage signal
Citing, actually other signals of telecommunication such as current signal may be used to generate required second grid signal S2,
At this, its specific works mode, numerical value etc. are not limited.
Embodiment three
The present embodiment is also a kind of concrete refinement to embodiment one.
As shown in Figure 6 a, modulating unit 12 can specifically include gating circuit 125 and addition electricity further
Road 126, gating circuit 125 receives control signal Sc by the control end 120 of modulating unit 12, and leads to
Second input 122 of ovennodulation unit 12 receives modulated signal Sa, and when control signal Sc is effective
Modulated signal Sa is exported to add circuit 126.Add circuit 126 is defeated by the first of modulating unit 12
Enter end 121 reception first grid signal S1, and modulated signal Sa and first exported by gating circuit 12
Signal S1 is overlapped, and exports second grid signal by the outfan 123 of modulating unit 12
S2。
This gives the optional structure of a kind of concrete modulating unit 12, with real presently described aobvious
Show when panel needs to realize touch controllable function, first grid signal S1 is modulated, suit the requirements with output
Second grid signal S2, thus reduce the load of self-capacitance.Concrete effect and the effect of embodiment two
Similar, understanding can be used for reference.
Preferably, gating circuit 125 can be thin film transistor (TFT), as shown in Figure 6 b, thin film transistor (TFT) 125
The control end 120 that grid is modulating unit 12, the first of thin film transistor (TFT) 125 extremely modulating unit 12
The second input 122, the second pole of thin film transistor (TFT) 125 is coupled to a signal of add circuit 126
Input.First grid signal S1 that add circuit 126 is received by superposition and from thin film transistor (TFT)
Modulated signal Sa of 125, second grid signal S2 is to outfan 123 in output, at described display surface
In the time that plate realizes touch controllable function, to one signal of telecommunication of corresponding grid so that posting shown in Fig. 2
Raw electric capacity Cjs is equivalent to not exist, thus reduces the load of self-capacitance.
It should be noted that in all embodiments of the invention, described driver element is for according to various inputs
Signal generates first grid signal S1, and described driver element can be ASG circuit.Fig. 7 gives one
The concrete structure of ASG circuit, it is seen that described driver element can comprise multiple input signal, such as first
Clock signal clk, second clock signal CLKB, initial level STV, reset signal Reset, first
Signal DIR1, secondary signal DIR2 etc., these input signals are unified in the above-described embodiments to be believed by input
Number Sin is indicated；Further, the concrete structure of described driver element is carried out the most in the embodiment above
Detailed description, Fig. 7 gives the ASG electricity of a kind of 9T1C (T represents that transistor, C represent electric capacity)
Road attachment structure, those skilled in the art can according to existing knowledge, easily learn 7T1C, 7T2C,
8T1C, 8T2C ... the concrete structure of ASG circuit.Owing to ASG circuit is not this as driver element
Inventing emphasis to be discussed in detail, therefore the concrete structure of described drive circuit is not limited by the present invention.
Those skilled in the art can combine existing knowledge voluntarily and understand, Fig. 7 is simply to illustrate that the present invention
Embodiment and a kind of example of being given, should not limit the present invention with this.
Embodiment four
This gives a kind of display floater, as shown in Fig. 8 a, Fig. 8 b, wherein Fig. 8 b is Fig. 8 a
Equivalent circuit in iris out the partial cutaway schematic of a kind of concrete structure of part with ellipse.Described display
Panel includes first substrate 21 and the second substrate 22 arranged corresponding thereto, and wherein first substrate 21 is permissible
Including the gate driver circuit 211 described in any embodiment in above-described embodiment and grid 212, grid drives
The second grid signal S2 of galvanic electricity road 211 output is loaded on grid 212.Described display floater also includes
It is positioned at the touch control electrode layer 213 on first substrate 21 or second substrate 22, touch control electrode layer 213 and grid
Forming parasitic capacitance between pole 21, described parasitic capacitance is the most described from the load held.
It should be noted that still using common electrode layer as touch control electrode layer 213 in the present embodiment, namely
Saying, touch controllable function is realized by receiving or send described touching signals by public electrode, common electrical
Extremely itself can use as described touch control electrode.It addition, in the present embodiment, described common electrode layer
213 are positioned on first substrate 21, but common electrode layer can also be positioned on second substrate 22, and it is also same
Sample can form parasitic capacitance with the grid 212 being positioned on first substrate 21, becomes described from the load held.
Concrete, described touch control electrode layer (common electrode layer) 213, can comprise multiple independent public
Electrode block, as shown in fig. 1, each described public electrode block can be connect by the cabling being connected electrically
Receive or send described touching signals, thus realizing the function of described touch control electrode.Here " independently ", it is
Refer to that described common electrode layer is divided into the most blocked fritter, each fritter and adjacent fritter
Between all there is no connection physically or contact, each fritter is each received by the cabling that is connected electrically
Or send described touching signals, not applying any signal when, can regard between these fritters
For be electrically insulated mutually.
It must be noted that common electrode layer described here (touch control electrode layer) 213 can be divided into many
Individual fritter, thus realize reception and the transmission of described touching signals, but as touch control electrode layer itself
Speech, the annexation between the shape of described touch control electrode, layout, position, electrode can be multiple many
Sample, this is the preferred implementation of one of which；And no matter common electrode layer 213 (touch control electrode
Layer) in electrode how to lay, described touch control electrode all can form parasitic capacitance with grid 212, causes
To described from the load held, therefore, should be with the touch control electrode layer 213 specifically enumerated in the present embodiment
Structure is as the restriction to the present embodiment.It addition, touch control electrode layer (common electrode layer) 213 in Fig. 8 a
Being divided into multiple independent fritter, remove outer peripheral areas, each fritter covers 4 grids, but this reality
Execute in example and a fritter specifically several grids of corresponding covering are not limited, should not show with Fig. 8 a
Particular number is limited.
The most concrete, as shown in Figure 8 b, the first substrate in described display floater can be TFT battle array
Row substrate, described display floater can include successively along printing opacity direction: grid layer, and described grid layer includes
The grid 212 of described TFT and the gate line (not shown in Fig. 8 b) electrically connected with grid 212；Active
Layer 214, active layer 214 namely semiconductor layer, typically by non-crystalline silicon or low temperature polycrystalline silicon, or can aoxidize
Thing quasiconductor etc. prepare, and active layer 214 need to be electrically insulated with described grid layer (in figure 8b with together with
Film layer to insulating effect schematically represents)；Source-drain electrode layer 215, source-drain electrode layer 215 comprises described TFT
Source electrode and drain electrode, and the data wire (not shown in Fig. 8 b) electrically connected with described source electrode；Insulating barrier
216；Described common electrode layer 213.Namely touch control electrode layer；Planarization layer 217；And pixel electrode
Layer 218, pixel electrode layer 218 includes multiple pixel electrode, and the drain electrode of each described TFT with one
Described pixel electrode electrically connects.
Described band can be display panels, now, second substrate from the display floater of appearance touch controllable function
22 is color film (color filter, CF) substrate, is also mingled with between first substrate 21 and second substrate 22
Liquid crystal, forms liquid crystal layer (not shown in Fig. 8 b).
Described band is classified into two stages from the working cycle of the display floater holding touch controllable function, is respectively used to
Realize display function and touch controllable function, accordingly, drive described display floater gate driver circuit one
Frame time cycle T also comprises display period t1 and touch-control period t2, wherein, in display period t1, described
Display floater realizes display function, and in touch-control period t2, described display floater realizes touch controllable function.
As it is shown in figure 9, within showing period t1, described gate driver circuit output second grid signal S2,
Realize the display function of described display floater.Now, in conjunction with refering to Fig. 3, modulating unit 12 receives
Control signal Sc should be invalid, and the first grid signal S1 that therefore driver element 11 generates will directly lead to
The outfan 123 of ovennodulation unit 12 exports, and as second grid signal S2, is sent to and this grid
On the grid of line electrical connection, thus realize display function.With low level, Fig. 9 represents that control signal Sc is
Invalid, in this time, the first grid signal S1 that gate line receives has a square wave, this square wave
High level time section in all TFT of electrically connecting with described gate line will open, receive respective data wire
On data signal.
In touch-control period t2, described gate driver circuit output second grid signal S2, it is achieved described aobvious
Showing the touch controllable function of panel, now, control signal Sc is effective.In conjunction with refering to Fig. 3, modulating unit 12 connects
Control signal Sc received is for effectively (representing that control signal Sc is effective with high level temporarily), therefore modulating list
The first grid signal S1 received 12 will be modulated by unit by modulated signal Sa, such as superposition the
One signal S1 and modulated signal Sa, then output second grid signal S2, is sent to and these grid
On the grid of polar curve electrical connection, thus within the time that described display floater realizes touch controllable function, make by grid
Two electrode potentials of the parasitic capacitance that pole and described touch control electrode are formed are equal, reduce described parasitic capacitance band
The impact come.During this t2, on described gate line, the second grid signal S2 of carrying needs and described
The upper touching signals applied of touch control electrode (public electrode) unanimously (about the understanding of " unanimously ", please be joined
According to above), it is also possible to the process of experience discharge and recharge as shown in Figure 4, but should be noted and applied on gate line
The size of signal, it is ensured that do not affect the image of described display floater, the most described second grid signal S2
(or touching signals) is low level or negative voltage, so will not make to be electrically connected with corresponding gate line
The TFT connect opens, thus affects the image of display picture.As front narrated, concrete modulated signal Sa
Waveform, amplitude, frequency, the parameter such as phase place can be according to second grid signal S2 and first grid signal
S1 sets, and also repeats no more at this.
Further, when modulating unit 12 is thin film transistor (TFT) 124 (as shown in Figure 5), or work as
When gating unit 125 is thin film transistor (TFT) (as shown in Figure 6 b), can be according to the type of thin film transistor (TFT)
Determine when control signal Sc is effective.When thin film transistor (TFT) 124 or thin film transistor (TFT) 125 are
During N-type TFT, in control signal Sc is the time of high level, control signal Sc is effective, remaining time
Interior invalid；When thin film transistor (TFT) 124 or thin film transistor (TFT) 125 are p-types TFT, control signal Sc
For in the low level time, control signal Sc is effective, and remaining time is invalid.
Present invention also offers a kind of display device, the display surface described in any of the above-described embodiment can be included
Plate, or comprise the gate driver circuit described in any embodiment.The display device that the present invention provides is permissible
In the case of the most additionally increasing structure, not increasing by one technique, reduce band from the display holding touch controllable function
The impact on described display floater of the parasitic capacitance of panel, improves the performance of described display floater.
It should be noted that above example can be used for reference mutually, comprehensively use.Although the present invention with
Preferred embodiment is open as above, but it is not that any those skilled in the art exist for limiting the present invention
Without departing from the spirit and scope of the present invention, may be by the method for the disclosure above and technology contents to this
Inventive technique scheme makes possible variation and amendment, therefore, every without departing from technical solution of the present invention
Content, any simple modification above example made according to the technical spirit of the present invention, equivalent variations
And modify, belong to the protection domain of technical solution of the present invention.
Claims (11)
1. a gate driver circuit, for drive belt from the display floater of appearance touch controllable function, described drive circuit bag
Include:
Driver element, described driver element is used for receiving multiple input signal, generates and export first grid
Signal；
Modulating unit, including controlling end, first input end, the second input and outfan；Wherein, institute
Stating first input end and receive described first grid signal, described second input receives modulated signal, described
Control end and receive control signal, described outfan output second grid signal；
Described modulating unit chooses whether by described modulated signal described according to the control signal received
First grid signal is modulated, and exports described second grid signal, described from the load held to reduce.
2. gate driver circuit as claimed in claim 1, it is characterised in that described modulating unit is in described control
When signal is effective, described modulated signal is exported the outfan of described modulating unit, as second grid
Signal.
3. gate driver circuit as claimed in claim 1, it is characterised in that described modulating unit include one thin
Film transistor, the grid that control end is described thin film transistor (TFT) of described modulating unit, described modulating unit
First input end couple the outfan of described modulating unit, the second input of described modulating unit is institute
Stating the first pole of thin film transistor (TFT), the second pole of described thin film transistor (TFT) is coupled to the defeated of described modulating unit
Go out end.
4. gate driver circuit as claimed in claim 1, it is characterised in that
Described modulating unit includes gating circuit and add circuit, and described gating circuit is single by described modulation
The control end of unit receives described control signal, receives described tune by the second input of described modulating unit
Signal processed, and when described control signal is effective, described modulated signal is exported to described add circuit；
Described add circuit receives described first grid signal by the first input end of described modulating unit,
And the modulated signal exported by described gating circuit is overlapped with described first grid signal, and pass through institute
The outfan stating modulating unit exports described second grid signal.
5. gate driver circuit as claimed in claim 4, it is characterised in that described gating circuit is film crystal
Pipe, the grid of described thin film transistor (TFT) is the control end of described modulating unit, the of described thin film transistor (TFT)
Second input of one the most described modulating unit, the second pole of described thin film transistor (TFT) be coupled to described in add
One signal input part of method circuit.
6. a display floater, including first substrate and the second substrate that arranges corresponding thereto, wherein said first base
Plate includes the gate driver circuit as according to any one of claim 1-5 and grid, described display floater
Also include the touch control electrode layer being positioned on described first substrate or described second substrate, described touch control electrode
Layer forms parasitic capacitance with described grid.
7. display floater as claimed in claim 6, it is characterised in that described touch control electrode layer is common electrode layer,
Described common electrode layer comprises multiple independent public electrode block, each described public electrode block by with its
The cabling of electrical connection receives or sends touching signals.
8. display floater as claimed in claim 7, it is characterised in that described first substrate is tft array base
Plate, described display floater includes successively along printing opacity direction:
Grid layer, the grid that described grid layer includes described TFT and the gate line being connected electrically；
Active layer；
Source-drain electrode layer, described source-drain electrode layer comprises source electrode and the drain electrode of described TFT, and with described source electrode
The data wire of electrical connection；
Insulating barrier；
Described common electrode layer；
Planarization layer, and
Pixel electrode layer, including multiple pixel electrodes, the drain electrode of described TFT is electrically connected with a pixel electrode
Connect.
9. display floater as claimed in claim 7, it is characterised in that drive the raster data model of described display floater
During the one frame time cycle of circuit comprises display and during touch-control, wherein:
During described display, described gate driver circuit exports described second grid signal, it is achieved institute
Stating the display function of display floater, described control signal is invalid；
During described touch-control, described gate driver circuit exports described second grid signal, it is achieved institute
Stating the touch controllable function of display floater, described control signal is effective.
10. display floater as claimed in claim 9, it is characterised in that in during described touch-control, described the
Two signals are consistent with described touching signals.
11. 1 kinds of display devices, including the display floater as described in claim any one of claim 6-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410322865.XA CN104077996B (en) | 2014-07-08 | 2014-07-08 | A kind of gate driver circuit and display floater, display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410322865.XA CN104077996B (en) | 2014-07-08 | 2014-07-08 | A kind of gate driver circuit and display floater, display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104077996A CN104077996A (en) | 2014-10-01 |
| CN104077996B true CN104077996B (en) | 2016-12-07 |
Family
ID=51599226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410322865.XA Active CN104077996B (en) | 2014-07-08 | 2014-07-08 | A kind of gate driver circuit and display floater, display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104077996B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105793869A (en) * | 2015-01-13 | 2016-07-20 | 深圳信炜科技有限公司 | Electronic equipment, capacitive sensing system and detection method of capacitive sensing system |
| CN104536637A (en) | 2015-01-29 | 2015-04-22 | 京东方科技集团股份有限公司 | Embedded touch screen and display device |
| CN104699319B (en) | 2015-04-01 | 2017-09-29 | 上海天马微电子有限公司 | A kind of touch-control display panel and its driving method |
| CN104699322B (en) * | 2015-04-01 | 2017-12-29 | 上海天马微电子有限公司 | Array base palte, touch-control display panel, touch control display apparatus and detection method |
| TWI575490B (en) * | 2015-07-02 | 2017-03-21 | 群創光電股份有限公司 | Touch in display panel and driving method thereof |
| US10809855B2 (en) * | 2015-08-19 | 2020-10-20 | Novatek Microelectronics Corp. | Driving circuit and a method for driving a display panel having a touch panel |
| CN105206218B (en) | 2015-10-29 | 2018-01-02 | 上海天马微电子有限公司 | Gate driving circuit, cascade gate driving circuit and the driving method for cascading gate driving circuit |
| CN105335009B (en) * | 2015-12-03 | 2023-08-08 | 敦泰科技(深圳)有限公司 | Touch display device and electronic equipment |
| CN105513528B (en) * | 2016-02-04 | 2018-06-22 | 京东方科技集团股份有限公司 | Capacitor compensating circuit, display base plate, display device and capacitance compensation method |
| CN107885367B (en) * | 2016-09-30 | 2020-12-18 | 深圳深微创芯科技有限公司 | Touch display device and electronic apparatus |
| TWI637184B (en) * | 2017-07-28 | 2018-10-01 | 大陸商北京集創北方科技股份有限公司 | Touch screen test method, touch screen test system and automatic test device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102214051A (en) * | 2010-04-06 | 2011-10-12 | 三星电子株式会社 | Method and apparatus compensating parasitic capacitance in touch panel |
| CN102609132A (en) * | 2011-01-14 | 2012-07-25 | 苹果公司 | Display to touch crosstalk compensation |
| CN102937846A (en) * | 2006-06-09 | 2013-02-20 | 苹果公司 | Touch screen liquid crystal display |
| CN103698927A (en) * | 2013-12-31 | 2014-04-02 | 敦泰科技有限公司 | Touch display device, drive circuit and drive method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102045809B1 (en) * | 2012-12-13 | 2019-11-18 | 엘지디스플레이 주식회사 | Touch sensor integrated type display device |
-
2014
- 2014-07-08 CN CN201410322865.XA patent/CN104077996B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937846A (en) * | 2006-06-09 | 2013-02-20 | 苹果公司 | Touch screen liquid crystal display |
| CN102214051A (en) * | 2010-04-06 | 2011-10-12 | 三星电子株式会社 | Method and apparatus compensating parasitic capacitance in touch panel |
| CN102609132A (en) * | 2011-01-14 | 2012-07-25 | 苹果公司 | Display to touch crosstalk compensation |
| CN103698927A (en) * | 2013-12-31 | 2014-04-02 | 敦泰科技有限公司 | Touch display device, drive circuit and drive method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104077996A (en) | 2014-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104077996B (en) | A kind of gate driver circuit and display floater, display device | |
| CN106200064B (en) | In-cell touch liquid crystal display device and its manufacturing method | |
| CN103454800B (en) | Array base palte, touch-control display panel, display device and circuit drive method | |
| CN104537970B (en) | Drive element of the grid, gate driver circuit and driving method, display device | |
| CN104699313B (en) | A kind of contact panel and display device | |
| CN104616617B (en) | Shifting register and drive method thereof as well as grid drive circuit and display device | |
| CN103761949B (en) | Gate driver circuit and driving method | |
| CN107210534A (en) | The manufacture method of TFT substrate, the scanning antenna using the TFT substrate and TFT substrate | |
| CN106201141B (en) | A kind of touch panel and touch control display apparatus | |
| CN104699316B (en) | Array base palte, display panel and display device | |
| TW201801189A (en) | Semiconductor device, manufacturing method thereof, display device, and electronic device | |
| CN105390095B (en) | Organic light-emitting diode (OLED) display apparatus and its manufacturing method | |
| CN104808861B (en) | array substrate, display panel and display device | |
| CN104915054B (en) | Array substrate and preparation method thereof and display device | |
| CN106356381B (en) | A kind of array substrate and preparation method thereof, display panel | |
| CN103854587B (en) | Gate driver circuit and its unit and a kind of display | |
| CN104020881B (en) | Touch display panel and its driving method, display device | |
| CN103928444B (en) | A kind of tft array substrate, display panel and display device | |
| US10642406B2 (en) | Touch display panel, driving method thereof and touch display device | |
| CN108962166A (en) | GOA circuit and liquid crystal display device with the GOA circuit | |
| CN103914179B (en) | Touch-control display panel and its control circuit | |
| CN105739768A (en) | Touch display panel and touch display equipment | |
| CN104700764B (en) | De-mux, source drive circuit and displayer | |
| CN106125424A (en) | A kind of array base palte, display floater and display device | |
| CN107329621A (en) | Contact panel and its driving method and contactor control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |