CN104793801B - A kind of embedded touch display unit and touch display screen - Google Patents
A kind of embedded touch display unit and touch display screen Download PDFInfo
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- CN104793801B CN104793801B CN201510232519.7A CN201510232519A CN104793801B CN 104793801 B CN104793801 B CN 104793801B CN 201510232519 A CN201510232519 A CN 201510232519A CN 104793801 B CN104793801 B CN 104793801B
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Abstract
The present invention relates to a kind of embedded touch display unit and touch display screen, there is provided shift register circuit and control unit, the shift register circuit includes at least one shift register circuit unit of cascade, each shift register circuit unit is connected with one group of public electrode block, and at least one shift register circuit unit is used to export touch-control drive signal to corresponding one group of public electrode block successively and receives touch sense signals.That is each group of public electrode block only need to draw a data-interface by corresponding shift register circuit unit, this data-interface electrically connects with a data-interface of control unit again, the quantity for the data-interface that each group of public electrode block is electrically connected with control unit is consequently reduced, the data-interface quantity being greatly lowered can directly reduce control unit and the cost of manufacture of touching display screen.
Description
Technical field
The present invention relates to technical field of liquid crystal display, more particularly to a kind of embedded touch display unit and touch to show
Screen.
Background technology
Touch-screen (Touch Panel, TP) includes external hanging type touch-screen (Add On Touch Panel) and embedded tactile
Touch screen (In Cell Touch Panel).External hanging type touch-screen and display device it is separately manufactured then by way of assembling system
Make together, such Making programme certainly will increase the thickness of display screen, and if due to adding dried layer clear glass or thin
Film, display transparent rate and contrast can be also decreased obviously, and cost of manufacture can rise again.And In-cell touch panel, directly by TP
Liquid crystal display panel (Liquid Crystal Display, LCD) is integrated into, reduces work flow, save some glass
Or the material such as film, make its low manufacture cost, light transmittance preferably, module thinner thickness.So touch-control structure is integrated in display
Have become a main trend of technical field of liquid crystal display in structure.
Fig. 1 is the structure chart of the touch display substrate for realizing self-capacitance touch-control of prior art.As shown in figure 1, common electrical
Touch control electrode is done in the multiplexing of pole block 111, and under dispaly state, the public electrode block 111 is used to receive public voltage signal, is touching
Under control state, the public electrode block is as touch-control driving electrodes and for receiving touch-control drive signal.
Each public electrode block 111 is directly electrically connected by a touch-control drives line 112 with control unit 131 respectively
Connect, this means that the control circuit 131 needs to distribute and come pair with the quantity identical data-interface of public electrode block 111
The touch-control drives line 112 is answered, so, touch controllable function just occupies substantial amounts of data-interface in control unit 131, and this is allowed for
The size of described control unit 131 is larger, cost of manufacture is higher.
The content of the invention
In view of this, the embodiment of the present invention provides a kind of embedded touch display unit and touch display screen, with solution
State technical problem.
To use following technical scheme up to this purpose, the present invention：
In a first aspect, the embodiment of the present invention provides a kind of embedded touch display unit, including：
Public electrode, it be at least two public electrode blocks that the public electrode, which includes, each described public electrode block and
One touch-control drives line connection, all public electrode blocks are divided at least one set of public electrode block；
Shift register circuit, include at least one shift register circuit unit of cascade, each shift register circuit
Unit is connected with one group of public electrode block, and at least one shift register circuit unit is used for public to corresponding one group successively
Electrode block exports touch-control drive signal and receives touch sense signals,
Control unit, it is connected with the shift register circuit, for believing to shift register circuit output touch-control driving
Number and receive touch sense signals.
Second aspect, the embodiment of the present invention provide a kind of touch display screen, including embedded described in above-mentioned first aspect
Touch display unit.
Embedded touch display unit provided in an embodiment of the present invention and touch display screen, there is provided shift register circuit and
Control unit, the shift register circuit include at least one shift register circuit unit of cascade, each shift LD electricity
Road unit is connected with one group of public electrode block, and at least one shift register circuit unit is used for public to corresponding one group successively
Common electrode block exports touch-control drive signal and receives touch sense signals.I.e. each group of public electrode block only need to be by moving accordingly
Position register circuit unit draws a data-interface, and this data-interface is electrically connected with a data-interface of control unit again
Connect, consequently reduce the quantity for the data-interface that each group of public electrode block is electrically connected with control unit, significantly subtract
The quantity that touch controllable function takes described control unit data-interface is lacked so that described control unit can reduce size, reduce
Cost of manufacture.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, institute in being described below to the embodiment of the present invention
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, it can also be implemented according to the present invention
The content of example and these accompanying drawings obtain other accompanying drawings.
Fig. 1 is the structure chart of the touch display substrate for realizing self-capacitance touch-control of prior art.
Fig. 2 is the structure chart for the embedded touch display unit that the embodiment of the present invention one provides.
Fig. 3 is the operation principle block diagram for the embedded touch display unit that the embodiment of the present invention one provides.
Fig. 4 is the block diagram for the shift register circuit that the embodiment of the present invention two provides.
Fig. 5 is the block diagram for the latch scanning circuit that the embodiment of the present invention two provides.
Fig. 6 is the circuit structure diagram for the latch scanning circuit that the embodiment of the present invention two provides.
Fig. 7 is the first circuit structure diagram of the selection circuit that the embodiment of the present invention three provides.
Fig. 8 is the second circuit structure chart for the selection circuit that the embodiment of the present invention three provides.
Fig. 9 is the oscillogram for the selection circuit that the embodiment of the present invention three provides.
Description of reference numerals：
11- public electrodes；111- public electrode blocks；112- touch-control drives lines；131- control units；
21- shift register circuits；211- shift register circuit units；31- selection circuits；311- selecting units；
32- latches scanning circuit；321- latches scanning element.
Embodiment
For make present invention solves the technical problem that, the technical scheme that uses and the technique effect that reaches it is clearer, below
The technical scheme of the embodiment of the present invention will be described in further detail with reference to accompanying drawing, it is clear that described embodiment is only
It is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those skilled in the art exist
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The embodiment of the present invention provides following technical scheme：
Embodiment one：
The embodiment of the present invention one provides a kind of embedded touch display unit.Fig. 2 is the interior of the offer of the embodiment of the present invention one
The structure chart of embedded touch display unit.
As shown in Fig. 2 the embedded touch display unit of the present embodiment, including：
Public electrode 11, it is at least two public electrode blocks 111 that the public electrode 11, which includes, each described common electrical
Pole block 111 is connected with a touch-control drives line 112, and all public electrode blocks 111 are divided at least one set of public electrode block
111；
Shift register circuit 21, include at least one shift register circuit unit 211 of cascade, each shift LD
Circuit unit 211 is connected with one group of public electrode block 111, at least one shift register circuit unit 211 be used for successively to
Corresponding one group of public electrode block 111 output touch-control drive signal and reception touch sense signals,
Control unit 131, it is connected with the shift register circuit 21, for exporting touch-control to the shift register circuit 21
Drive signal and reception touch sense signals.
The time-sharing multiplex of public electrode 11 is shown and touch-control.
Fig. 3 is the operation principle block diagram for the embedded touch display unit that the embodiment of the present invention one provides.
As shown in figure 3, one end of each shift register circuit unit 211 is connected with control unit 131, each displacement
The other end of register circuit unit 211 is connected with the cabling corresponding to one group of public electrode block 111, the shift register circuit list
Member 211 is used to export touch-control drive signal to corresponding one group of public electrode block 111 successively and receives touch sense signals；It is described
Shift register circuit unit 211 includes latching scanning circuit 32 and selection circuit 31, and each latch scanning circuit 32 includes
Multiple latch scanning elements 321, each selection circuit 31 include multiple selecting units 311.
111 need of each group of public electrode block draw a data-interface by shift register circuit unit 211, this
Data-interface is electrically connected with control unit 131 again, then control unit 131, which corresponds to one group of public electrode block 111, only to be needed to set
One data-interface, the quantity for the data-interface of control unit 131 that such touch controllable function takes are greatly decreased so that the control
Unit 131 can reduce size, reduce cost of manufacture.
In the present embodiment, there is provided embedded touch display unit, there is provided shift register circuit 21 and control unit
131, the shift register circuit 21 includes at least one shift register circuit unit 211 of cascade, each shift LD electricity
Road unit 211 is connected with one group of public electrode block 111, and at least one shift register circuit unit 211 is used for successively to right
The one group of public electrode block 111 output touch-control drive signal and reception touch sense signals answered.That is each group of public electrode block 111
Only need to by corresponding shift register circuit unit 211 draw a data-interface, this data-interface again with control unit
131 data-interface electrical connection, consequently reduces each group of public electrode block 111 and is electrically connected with control unit 131
The quantity of the data-interface connect, the quantity for the data-interface of control unit 131 that such touch controllable function takes are greatly decreased so that institute
Size can be reduced, reduce cost of manufacture by stating control unit 131.
Embodiment two：
The embodiment of the present invention two provides a kind of embedded touch display unit.Fig. 4 is the shifting that the embodiment of the present invention two provides
The block diagram of position register circuit 21.
As shown in figure 4, on the basis of embodiment one, the shift register circuit unit 211 of the present embodiment includes lock
Deposit scanning circuit 32 (Scane Unit as shown in Figure 4) and selection circuit 31 (Sel Unit as shown in Figure 4), the latch
The control terminal connection control unit 131 of scanning circuit 32, first output end for latching scanning circuit 32 connect the selection
The selection signal input of circuit 31, latch scanning electricity described in the second output end connection next stage for latching scanning circuit 32
The control terminal on road 32；
The signal output part of the selection circuit 31 connects the public electrode block 111, and the selection circuit 31 also includes
Touching signals end and common electrode signal end, it is respectively used to input touch-control drive signal and common electrode signal.
Specifically, the embedded touch display unit also includes glass substrate, the glass substrate be divided into viewing area with
Non-display area, the public electrode 11 are arranged at the viewing area of the glass substrate, and the shift register circuit unit 211 is set
In the non-display area of the glass substrate.Described control unit 131 can be flexible PCB (FPC) or IC circuits.
Specifically, described control unit 131 is the IC circuits for the non-display area for being arranged at glass substrate.The shift LD
Circuit unit 211 is arranged at the non-display area of glass substrate and between IC circuits public electrode 11.
Fig. 5 is the block diagram for the latch scanning circuit 32 that the embodiment of the present invention two provides.As shown in figure 5, the lock
Depositing scanning circuit 32 includes latch (LATCH as shown in Figure 5), NAND gate (NAND as shown in Figure 5), buffer (such as Fig. 5
Shown BUFFER) and reset switch (reset as shown in Figure 5), the first input end connection control unit of the latch
131, the output end of the latch connects the input of the NAND gate, and the output end of the NAND gate connects the buffer
Input, the output end of the buffer connects the selection signal input of the selection circuit 31, the of the latch
Two inputs connect the reset switch.
Latch is a kind of storage unit circuit sensitive to impulse level, and it can be acted in specific input pulse level
Lower change state.Latch, exactly signal is kept in maintain certain level state.The main effect of latch is caching, its
The asynchronous problem of the secondary controller for completing high speed and peripheral hardware at a slow speed, it is thirdly to solve the problems, such as driving, is finally to solve
One I/O mouth can be exported the problem of also inputting.Latch is the input using Automatic level control data, and it is included without enabled
The latch of control and the latch with enabled control.
NAND gate is a kind of elementary logic circuit of digital circuit, is to be superimposed with door and NOT gate, there is two inputs and one
Individual output.If when input is high level (1), output is low level (0)；If at least one in input is low level (0),
Then output is high level (1).Exactly two input signals are first carried out for the result of NAND gate and computing, then to this and operation result
Carry out the result of inverse.NAND operation input requirements have two, if input is all represented with 0 and 1, then with computing
As a result it is exactly the product of the two numbers.Such as 1 and 1 (there is signal at both ends), then output is 0；1 and 0, then output is 1；0 and 0, then
Export as 1.
Buffer refers to buffer register, and it is divided to two kinds of input buffer and output buffer.The former effect be by
The data that peripheral hardware is sent temporarily are deposited, so that processor takes it away；The effect of the latter is sent to for temporarily storage processor
The data of peripheral hardware.There is buffer, so that it may so that the CPU of high speed operation and the peripheral hardware to work at a slow speed play coordination and cushioning effect,
Realize the synchronization of data transmission.
Reset switch is that one kind can be switched after pressing down with automatically reset switch, and hand, which unclamps, returns back to original state,
Such as recover initial state or return 0.
Fig. 6 is the circuit structure diagram for the latch scanning circuit 32 that the embodiment of the present invention two provides.As shown in fig. 6, the lock
Depositing scanning circuit 32 includes the first phase inverter (INV1 as shown in Figure 6), the second phase inverter (INV2 as shown in Figure 6), the 3rd
Phase inverter (INV3 as shown in Figure 6), the 4th phase inverter (INV4 as shown in Figure 6), the 5th phase inverter are (as shown in Figure 6
INV5), the first clocked inverter (CKINV1 as shown in Figure 6), second clock phase inverter (CKINV2 as shown in Figure 6), with
NOT gate (NAND1 as shown in Figure 6) and P-type TFT (MF1 as shown in Figure 6)；
Wherein, the input of first phase inverter connects control unit 131, the second electricity of the first clocked inverter respectively
First power end of source, second clock phase inverter, the input connection control unit 131 of the first clocked inverter, first is anti-
The output end of phase device connects the second source end of the first power end of the first clocked inverter, second clock phase inverter respectively, the
The output end of one clocked inverter connects the drain electrode of the P-type TFT, output end of second clock phase inverter, second anti-respectively
The input of phase device, the output end of the second phase inverter connect the input of second clock phase inverter, the second of NAND gate defeated respectively
Entering end, the first input end connection control unit 131 of NAND gate, the output end of NAND gate connects the input of the 3rd phase inverter,
The output end of 3rd phase inverter connects the input of the 4th phase inverter, and the output end of the 4th phase inverter connects the defeated of the 5th phase inverter
Enter end, the output end of the 5th phase inverter connects the selection signal input of the selection circuit 31, the grid of P-type TFT
Connect reset signal end, the source electrode connection voltage signal end of P-type TFT.
It should be noted that P-type TFT is thin film transistor (TFT) (TFT) one kind.Thin film transistor (TFT) is field-effect
One kind of transistor, including N-type TFT and P-type TFT.Production method mainly deposits various on substrate
Different film, such as semiconductor active layer, dielectric layer and metal electrode layer.The main application of thin film transistor (TFT) is to make film crystalline substance
Body pipe liquid crystal display device (TFT-LCD).It is made in as thin film transistor (TFT) in display panel, it is possible to reduce mutual between each pixel
Disturb and increase frame stabilization degree.In the TFT-LCD productions of reality, a-Si is mainly utilized:H TFT ON state (is more than and opened
Voltage) to pixel capacitance quick charge, the voltage of pixel capacitance is kept using OFF state, so as to realize quick response and well deposit
The unification of storage.Most TFT energy rank is less than monocrystalline silicon (Eg=1.12eV).In addition, TFT is often in dielectric, electrode and inside
Wiring uses indium tin oxide (ITO), and ITO is transparent material, is adapted to TFT-LCD production.
TFT working condition can be described using the monocrystalline silicon MOSFET operation principles that Weimer is characterized.With n ditches
Exemplified by MOSFET, when grid imposes positive voltage, grid voltage produces electric field in gate insulation layer, and power line is pointed to by gate electrode and partly led
Body surface face, and charge inducing is produced at surface.As gate voltage increases, semiconductor surface will be changed into electronics product by depletion layer
Tired layer, form inversion layer and (when reaching cut-in voltage), carrier is just had plus voltage between source, leakage when reaching strong inversion
Pass through raceway groove.When source-drain voltage very little, conducting channel is approximately a constant resistance, and leakage current is linear with source-drain voltage increase
Increase.When source-drain voltage is very big, it can have an impact to gate voltage so that electric field is gradual to drain terminal by source in gate insulation layer
Weaken, electronics is gradually reduced by source to drain terminal in semiconductor surface inversion layer, and channel resistance increases as source-drain voltage increases
Add.Leakage current increase becomes slow, and corresponding linear zone is worked as source-drain voltage to saturation region transition and increased to a certain extent, drain terminal transoid
Thickness degree is kept to zero, and voltage is increasing, and device enters saturation region.
Certainly, above-mentioned various circuits, those skilled in the art can also be according to common knowledges, in the technology of the technical program
Under background, from different circuit connecting mode and different parameters component to realize function corresponding to each circuit, herein not
Illustrate and repeat again.
In the present embodiment, embedded touch display unit is provided with shift register circuit 21 and control unit 131, the shifting
Position register circuit 21 includes at least one shift register circuit unit 211 of cascade, each shift register circuit unit 211
It is connected with one group of public electrode block 111.This circuit design draws one relative to existing each public electrode block 111
Cabling electrically connects with control unit 131, and control unit 131 possesses M*N data-interface (array of the public electrode block 111 into M*N
Arrangement) situation for, each group of public electrode block 111 is reduced to the data-interface that control unit 131 electrically connects accordingly
For 1.I.e. 111 need of each group of public electrode block draw a data-interface by shift register circuit unit 211, this
Data-interface electrically connects with a data-interface of control unit 131 again.And multiple shift register circuit units 211 can be with
It is arranged on glass substrate, control unit 131 is arranged on FPC, then be just the reduction of the data drawn from glass substrate and connect
The quantity of mouth (such as I/O interfaces), the cost of manufacture of glass substrate is constant, but the data-interface of control unit 131 is reduced, and it is embedded
The cost of manufacture of formula touch display unit can be greatly reduced.
Embodiment three：
The embodiment of the present invention three provides a kind of embedded touch display unit.Fig. 7 is the choosing that the embodiment of the present invention three provides
Select the first circuit structure diagram of circuit 31.
As shown in fig. 7, on the basis of embodiment two, the selection circuit 31 of the present embodiment includes hex inverter
(U110 as shown in Figure 7), the 7th phase inverter (U111 as shown in Figure 7), the 8th phase inverter (U112 as shown in Figure 7),
Nine phase inverters (U113 as shown in Figure 7), the tenth phase inverter (U114 as shown in Figure 7), the 11st phase inverter are (as shown in Figure 7
U114), it is the 12nd phase inverter (U116 as shown in Figure 7), the 13rd phase inverter (U117 as shown in Figure 7), the 14th anti-
Phase device (U118 as shown in Figure 7), N-type TFT, the first transmission gate and at least one transmission gate group (corresponding and such as Fig. 7
Described two transmission gates being connected with TX1reg1 ends), the transmission gate group includes the second transmission gate and the 3rd transmission gate；
Wherein, the input of the hex inverter connects selection signal input, the input of the first transmission gate respectively,
The output end of hex inverter connects the grid of N-type TFT, the output end of the first transmission gate respectively, the first transmission gate
Second source end connecting valve control signal end, the drain electrode connection voltage signal end of N-type TFT, the of the first transmission gate
One power end connects input, the source electrode of N-type TFT of the input of the 7th phase inverter, the 11st phase inverter respectively,
The output end of 7th phase inverter connects the input of the 8th phase inverter, the input of the tenth phase inverter respectively, the 8th phase inverter
Output end connects the input of the 9th phase inverter, and the output end of the tenth phase inverter connects the input of the second transmission gate, and the 9th is anti-
The output end of phase device connects the output end of the second transmission gate, and the output end of the 11st phase inverter connects the 12nd phase inverter respectively
The input of input, the 14th phase inverter, the input of output end the 13rd phase inverter of connection of the 12nd phase inverter, the tenth
Three phase inverters output end connection with second transmission gate belong to identical traffic door group the 3rd transmission gate input, the tenth
Four phase inverters output end connection with second transmission gate belong to identical traffic door group the 3rd transmission gate output end, second
The second source end connection of transmission gate belongs to the first power supply of the 3rd transmission gate of identical traffic door group with second transmission gate
End.
It should be noted that in the case where signal input part and switch controlling signal end are high level, TX1seg1 letters
Number it is TXH1 signals.
Specifically, Fig. 8 is the second circuit structure chart for the selection circuit 31 that the embodiment of the present invention three provides.The invention is implemented
The selection circuit 31 of example, including five transmission gate groups, each transmission gate group include two transmission gates.It is as shown in figure 8, described
Selection circuit 31 includes hex inverter (U110 as shown in Figure 8), the 7th phase inverter (U111 as shown in Figure 8), the 8th anti-
Phase device (U112 as shown in Figure 8), the 9th phase inverter (U113 as shown in Figure 8), the tenth phase inverter are (as shown in Figure 8
U114), the 11st phase inverter (U115 as shown in Figure 8), the 12nd phase inverter (U116 as shown in Figure 8), the 13rd anti-phase
Device (U117 as shown in Figure 8), the 14th phase inverter (U118 as shown in Figure 8), N-type TFT, the first transmission gate,
Four transmission gates (one of two transmission gates being connected with TX1reg1 ends of corresponding diagram 8), the 5th transmission gate (corresponding diagram 8 with
Two transmission gates of TX1reg1 ends connection two), the 6th transmission gate (transmit by be connected with TX1reg2 ends two of corresponding diagram 8
Door one of), the 7th transmission gate (corresponding diagram 8 with TX1reg2 ends connection two transmission gates two), the 8th transmission gate it is (corresponding
One of Fig. 8 two transmission gates being connected with TX1reg3 ends), the 9th transmission gate (be connected with TX1reg3 ends the two of corresponding diagram 8
Individual transmission gate two), the tenth transmission gate (one of two transmission gates being connected with TX1reg4 ends of corresponding diagram 8), the 11st transmission
Door (the two of two transmission gates being connected with TX1reg4 ends of corresponding diagram 8), the 12nd transmission gate (corresponding diagram 8 and TX1reg5
Hold one of two transmission gates of connection) and the 13rd transmission gate (two transmission gates being connected with TX1reg4 ends of corresponding diagram 8 it
Two)；
Wherein, the input of the hex inverter connects selection signal input, the input of the first transmission gate respectively,
The output end of hex inverter connects the grid of N-type TFT, the output end of the first transmission gate respectively, the first transmission gate
Second source end connecting valve control signal end, the drain electrode connection voltage signal end of N-type TFT, the of the first transmission gate
One power end connects input, the source electrode of N-type TFT of the input of the 7th phase inverter, the 11st phase inverter respectively,
The output end of 7th phase inverter connects the input of the 8th phase inverter, the input of the tenth phase inverter respectively, the 8th phase inverter
Output end connects the input of the 9th phase inverter, and the output end of the tenth phase inverter connects the input of the 4th transmission gate, the 6th biography
The input of defeated door, the input of the 8th transmission gate, input, the input of the 12nd transmission gate of the tenth transmission gate, the 9th
The output end of phase inverter connects the output of the output end of the 4th transmission gate, the output end, the 8th transmission gate of the 6th transmission gate respectively
End, the output end of the tenth transmission gate, the output end of the 12nd transmission gate, the output end of the 11st phase inverter connect the 12nd respectively
The input of the input of phase inverter, the 14th phase inverter, the output end of the 12nd phase inverter connect the defeated of the 13rd phase inverter
Enter end, the output end of the 13rd phase inverter connects the input of the 5th transmission gate, the input of the 7th transmission gate, the 9th biography respectively
The input of defeated door, the input of the 11st transmission gate, the input of the 13rd transmission gate, the output end point of the 14th phase inverter
Lian Jie not the output end of the 5th transmission gate, the output end of the 7th transmission gate, the output end of the 9th transmission gate, the 11st transmission gate
The output end of output end, the 13rd transmission gate, the second source end of the 4th transmission gate connect the first power end of the 5th transmission gate,
The second source end of 6th transmission gate connects the first power end of the 7th transmission gate, the second source end connection of the 8th transmission gate the
First power end of nine transmission gates, the first power end of the 11st transmission gate of second source end connection of the tenth transmission gate, the tenth
The second source end of two transmission gates connects the first power end of the 13rd transmission gate.
Specifically, Fig. 9 is the oscillogram for the selection circuit 31 that the embodiment of the present invention three provides.It is as shown in figure 9, defeated in signal
In the case of entering end and switch controlling signal end for high level, TX1seg1 signals are TXH1 signals, and TX1seg2 signals are
TXH2 signals, TX1seg3 signals are TXH3 signals, and TX1seg4 signals are TXH4 signals, and TX1seg5 signals are TXH5 signals, if
Also other transmission gate groups are electrically connected, then the rest may be inferred.
Preferably, each row public electrode block 111 forms one group of public electrode 11.
Specifically, when being in the touch-control stage, the latch control selections circuit 31 of scanning circuit 32, touching signals end is selected
Turned on touch-control drives line 112, touch-control drive signal is exported to the public electrode block 111；When in display stage, the lock
The control selections circuit 31 of scanning circuit 32 is deposited, selects common electrode signal end and touch-control drives line 112 to turn on, to the common electrical
The output display drive signal of pole block 111.
It should be noted that embedded touch display unit is included outside foregoing circuit, can also include in supporting
The miscellaneous part of embedded touch display unit normal work, wherein, the embedded touch display unit is above-mentioned each implementation
Embedded touch display unit described in example.Above-mentioned embedded touch display unit can be that the embedded touch of mobile phone is shown
Device, the embedded touch display unit of desktop computer, the embedded touch display unit of notebook, tablet personal computer it is embedded
Embedded touch display unit of touch display unit, the embedded touch display unit of electron album or Electronic Paper etc..
In touch-control working condition, when touch-control driving electrodes are applied in touch-control drive signal, touch-control driving electrodes with it is public
The electric capacity formed between electrode 11 can have an impact to the rotation of liquid crystal molecule, therefore, in order to avoid the above situation is to liquid crystal point
Sub to rotate caused influence, being preferably that the display working condition and touch-control working condition of embedded touch display unit use divides
When mode of operation.
Certainly, above-mentioned various circuits, those skilled in the art can also be according to common knowledges, in the technology of the technical program
Under background, from different circuit connecting mode and different parameters component to realize function corresponding to each circuit, herein not
Illustrate and repeat again.
Embedded touch display unit in the present embodiment, including shift register circuit 21, the shift register circuit
More cablings are set between 21 and control unit 131, and every cabling, which is used to export to corresponding row public electrode block 111, to be believed
Number so that multiple public electrode blocks 111 positioned at a row share a cabling.A piece cabling transmits a row public electrode block 111
Signal, pass through cabling and control unit 131 respectively relative to each public electrode block 111 in a row public electrode block 111
For connection carries out signal transmission, significantly reduce the quantity of the I/O interfaces needed for control unit 131.
Example IV：
It is the embodiment of touch display screen provided in an embodiment of the present invention below.The embodiment of touch display screen with it is above-mentioned
Embedded touch display unit embodiment belongs to same design, in the embodiment of touch display screen in the details of not detailed description
Hold, may be referred to above-mentioned embedded touch display unit embodiment.
This implementation provide touch display screen, including above-described embodiment one to three any one it is embedded touch display dress
Put, the description of operation principle and the explanation of related notion and explanation on correlation, refer to above-described embodiment one to three, herein
Repeat no more.
The embodiment of the present invention four provides a kind of touch display screen, including above-mentioned embedded touch display unit.
The touch display screen that the present embodiment provides, there is provided shift register circuit 21 and control unit 131, the shift LD
Circuit 21 includes at least one shift register circuit unit 211 of cascade, each shift register circuit unit 211 and one group
Public electrode block 111 connects, and at least one shift register circuit unit 211 is used for successively to corresponding one group of public electrode
Block 111 exports touch-control drive signal and receives touch sense signals.That is 111 need of each group of public electrode block by moving accordingly
Position register circuit unit 211 draws a data-interface, this data-interface data-interface with control unit 131 again
Electrical connection, consequently reduce the number for the data-interface that each group of public electrode block 111 is electrically connected with control unit 131
Amount, the quantity for the data-interface of described control unit 131 for reducing touch controllable function occupancy is greatly lowered so that the control is single
Member 131 can reduce size, reduce cost of manufacture.
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 (10)
- A kind of 1. embedded touch display unit, it is characterised in that including：Public electrode, it is at least two public electrode blocks that the public electrode, which includes, each described public electrode block and one Touch-control drives line connects, and all public electrode blocks are divided at least one set of public electrode block；Shift register circuit, include at least one shift register circuit unit of cascade, each shift register circuit unit It is connected with one group of public electrode block, at least one shift register circuit unit is used for successively to corresponding one group of public electrode Block exports touch-control drive signal and receives touch sense signals,Control unit, be connected with the shift register circuit, for the shift register circuit export touch-control drive signal and Receive touch sense signals；Public electrode block described in one group includes the m public electrode blocks, wherein, the m is the integer more than 1.
- 2. embedded touch display unit according to claim 1, it is characterised in that the shift register circuit unit bag Include and latch scanning circuit and selection circuit, the control terminal connection control unit for latching scanning circuit is described to latch scanning electricity First output end on road connects the selection signal input of the selection circuit, and second output end for latching scanning circuit connects Connect the control terminal that scanning circuit is latched described in next stage；The signal output part of the selection circuit connects the public electrode block, the selection circuit also include touching signals end and Common electrode signal end, it is respectively used to input touch-control drive signal and common electrode signal.
- 3. embedded touch display unit according to claim 2, it is characterised in that the latch scanning circuit includes lock Storage, NAND gate, buffer and reset switch, the first input end connection control unit of the latch, the latch Output end connects the input of the NAND gate, and the output end of the NAND gate connects the input of the buffer, described slow The output end for rushing device connects the selection signal input of the selection circuit, and the second input connection of the latch is described multiple Bit switch.
- 4. embedded touch display unit according to claim 2, it is characterised in that the latch scanning circuit includes the One phase inverter, the second phase inverter, the 3rd phase inverter, the 4th phase inverter, the 5th phase inverter, the first clocked inverter, second clock Phase inverter, NAND gate and P-type TFT；Wherein, the input of first phase inverter connects control unit, the second source end of the first clocked inverter, respectively First power end of two clocked inverters, the input connection control unit of the first clocked inverter, the output of the first phase inverter End connects the first power end, the second source end of second clock phase inverter of the first clocked inverter, the first clock inversion respectively The output end of device connects the drain electrode of P-type TFT, the input of the output end of second clock phase inverter, the second phase inverter respectively End, the output end of the second phase inverter connect the input of second clock phase inverter, the second input of NAND gate, NAND gate respectively First input end connection control unit, the output end of NAND gate connects the input of the 3rd phase inverter, the 3rd phase inverter it is defeated Go out the input of the 4th phase inverter of end connection, the output end of the 4th phase inverter connects the input of the 5th phase inverter, and the 5th is anti-phase The output end of device connects the selection signal input of the selection circuit, and the grid of P-type TFT connects reset signal end, The source electrode connection voltage signal end of P-type TFT.
- 5. embedded touch display unit according to claim 2, it is characterised in that it is anti-that the selection circuit includes the 6th Phase device, the 7th phase inverter, the 8th phase inverter, the 9th phase inverter, the tenth phase inverter, the 11st phase inverter, the 12nd phase inverter, 13 phase inverters, the 14th phase inverter, N-type TFT, the first transmission gate and at least one transmission gate group, the transmission gate Group includes the second transmission gate and the 3rd transmission gate；Wherein, the input of the hex inverter connects selection signal input, the input of the first transmission gate respectively, and the 6th The output end of phase inverter connects the grid of N-type TFT, the output end of the first transmission gate respectively, and the second of the first transmission gate Power end connecting valve control signal end, the drain electrode connection voltage signal end of N-type TFT, the first electricity of the first transmission gate Source connects input, the source electrode of N-type TFT of the input of the 7th phase inverter, the 11st phase inverter respectively, and the 7th The output end of phase inverter connects the input of the 8th phase inverter, the input of the tenth phase inverter, the output of the 8th phase inverter respectively The input of the 9th phase inverter of end connection, the output end of the tenth phase inverter connect the input of the second transmission gate, the 9th phase inverter Output end connect the output end of the second transmission gate, the output end of the 11st phase inverter connects the input of the 12nd phase inverter respectively End, the input of the 14th phase inverter, the output end of the 12nd phase inverter connect the input of the 13rd phase inverter, and the 13rd is anti- The output end connection of phase device belongs to the input of the 3rd transmission gate of identical traffic door group with second transmission gate, and the 14th is anti- The output end connection of phase device belongs to the output end of the 3rd transmission gate of identical traffic door group, the second transmission with second transmission gate The second source end connection of door belongs to the first power end of the 3rd transmission gate of identical traffic door group with second transmission gate.
- 6. embedded touch display unit according to claim 2, it is characterised in that it is anti-that the selection circuit includes the 6th Phase device, the 7th phase inverter, the 8th phase inverter, the 9th phase inverter, the tenth phase inverter, the 11st phase inverter, the 12nd phase inverter, 13 phase inverters, the 14th phase inverter, N-type TFT, the first transmission gate, the 4th transmission gate, the 5th transmission gate, the 6th pass Defeated door, the 7th transmission gate, the 8th transmission gate, the 9th transmission gate, the tenth transmission gate, the 11st transmission gate, the 12nd transmission gate and 13rd transmission gate；Wherein, the input of the hex inverter connects selection signal input, the input of the first transmission gate respectively, and the 6th The output end of phase inverter connects the grid of N-type TFT, the output end of the first transmission gate respectively, and the second of the first transmission gate Power end connecting valve control signal end, the drain electrode connection voltage signal end of N-type TFT, the first electricity of the first transmission gate Source connects input, the source electrode of N-type TFT of the input of the 7th phase inverter, the 11st phase inverter respectively, and the 7th The output end of phase inverter connects the input of the 8th phase inverter, the input of the tenth phase inverter, the output of the 8th phase inverter respectively The input of the 9th phase inverter of end connection, the output end of the tenth phase inverter connect input, the 6th transmission gate of the 4th transmission gate Input, input, input, the input of the 12nd transmission gate of the tenth transmission gate of the 8th transmission gate, the 9th is anti-phase The output end of device connects the output end of the 4th transmission gate, the output end of the 6th transmission gate, the output end of the 8th transmission gate, respectively The output end of the output end of ten transmission gates, the 12nd transmission gate, it is anti-phase that the output end of the 11st phase inverter connects the 12nd respectively The input of the input of device, the 14th phase inverter, the output end of the 12nd phase inverter connect the input of the 13rd phase inverter, The output end of 13rd phase inverter connects input, the 9th transmission gate of the input of the 5th transmission gate, the 7th transmission gate respectively Input, input, the input of the 13rd transmission gate of the 11st transmission gate, the output end of the 14th phase inverter connects respectively Connect the output of the output end, the output end, the output end, the 11st transmission gate of the 9th transmission gate of the 7th transmission gate of the 5th transmission gate End, the output end of the 13rd transmission gate, the first power end of the 5th transmission gate of second source end connection of the 4th transmission gate, the 6th The second source end of transmission gate connects the first power end of the 7th transmission gate, and the second source end connection the 9th of the 8th transmission gate passes First power end of defeated door, the second source end of the tenth transmission gate connect the first power end of the 11st transmission gate, and the 12nd passes The second source end of defeated door connects the first power end of the 13rd transmission gate.
- 7. embedded touch display unit according to claim 1, it is characterised in that each row public electrode block group Into one group of public electrode.
- 8. embedded touch display unit according to claim 2, it is characterised in that when in touch-control stage, the lock Scanning circuit control selections circuit is deposited, touching signals end and the conducting of touch-control drives line is selected, exports and touch to the public electrode block Control drive signal；When in display the stage, it is described latch scanning circuit control selections circuit, select common electrode signal end and touch Drives line conducting is controlled, to the public electrode block output display drive signal.
- 9. embedded touch display unit according to claim 1, it is characterised in that also including glass substrate, the glass Glass substrate is divided into viewing area and non-display area, and the public electrode is arranged at the viewing area of the glass substrate, and the displacement is posted Deposit the non-display area that circuit unit is arranged at the glass substrate.
- 10. a kind of touch display screen, it is characterised in that show including the embedded touch as described in claim 1 to 9 any one Showing device.
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| CN105118466B (en) * | 2015-09-23 | 2018-02-09 | 深圳市华星光电技术有限公司 | Scan drive circuit and the liquid crystal display device with the circuit |
| CN105096900B (en) * | 2015-09-23 | 2019-01-25 | 深圳市华星光电技术有限公司 | Scan drive circuit and liquid crystal display device with the circuit |
| CN105373260B (en) * | 2015-12-23 | 2018-06-01 | 武汉华星光电技术有限公司 | Touch drive circuit |
| CN106775078B (en) * | 2016-12-08 | 2019-09-03 | 厦门天马微电子有限公司 | Touch-control display panel, driving method and touch control display apparatus |
| CN106843575B (en) * | 2017-01-11 | 2020-01-17 | 武汉华星光电技术有限公司 | Hybrid embedded touch panel driving circuit and detection method |
| TWI724846B (en) * | 2020-03-30 | 2021-04-11 | 友達光電股份有限公司 | Sensing device and sensing method |
| CN113823339B (en) * | 2021-09-07 | 2024-07-02 | 深圳知微创新技术有限公司 | Scanning circuit based on thin film transistor |
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