CN104793801A - Embedded type touch display device and touch display screen - Google Patents
Embedded type touch display device and touch display screen Download PDFInfo
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- CN104793801A CN104793801A CN201510232519.7A CN201510232519A CN104793801A CN 104793801 A CN104793801 A CN 104793801A CN 201510232519 A CN201510232519 A CN 201510232519A CN 104793801 A CN104793801 A CN 104793801A
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Abstract
The invention relates to an embedded type touch display device and a touch display screen. A shift register circuit and a control unit are arranged, the shift register circuit comprises one or more cascaded shift register circuit units, each shift register circuit unit is connected with a set of public electrode blocks, and the shift register circuit units are used for sequentially outputting touch drive signals to the corresponding set of the public electrode blocks and receiving touch sense signals. Each set of the public electrode blocks only needs to introduce a data interface through the corresponding shift register circuit unit, and the data interfaces are in electric connection with data interfaces of the control unit, the quantity of the data interfaces, being in electric connection with the control unit, of each set of the public electrode blocks is correspondingly decreased, the data interface quantity is significantly decreased, and therefore the manufacturing cost of the control unit and the touch display screen can be directly lowered.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of embedded touch display unit and touch display screen.
Background technology
Touch-screen (Touch Panel, TP) comprises external hanging type touch-screen (Add On Touch Panel) and In-cell touch panel (In Cell Touch Panel).Together with external hanging type touch-screen and display device are separated and are manufactured and be then produced on by the mode of assembling, such Making programme certainly will increase the thickness of display screen, and owing to adding some layers of clear glass or film, display transparent rate and contrast also can obviously decline, and cost of manufacture can rise again.And In-cell touch panel, directly TP is integrated into display panels (LiquidCrystal Display, LCD), decrease work flow, save the materials such as some glass or film, make that its cost of manufacture is low, transmittance better, module thinner thickness.So, touch-control structure is integrated in display structure the megatrend having become technical field of liquid crystal display.
Fig. 1 is the structural drawing realizing the touch display substrate of self-capacitance touch-control of prior art.As shown in Figure 1, public electrode block 111 is multiplexing does touch control electrode, and under display state, described public electrode block 111 is for receiving public voltage signal, and under touch-control state, described public electrode block is as touch-control drive electrode and for receiving touch-control drive singal.
Described each public electrode block 111 is directly electrically connected with control module 131 respectively by a touch-control drive wire 112, this just means that described control circuit 131 needs distribute the data-interface identical with described public electrode block 111 quantity and carry out corresponding described touch-control drive wire 112, like this, touch controllable function just occupies data-interfaces a large amount of on control module 131, and this just makes, and the size of described control module 131 is comparatively large, cost of manufacture is higher.
Summary 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, to solve the problems of the technologies described above.
For reaching this object, the present invention by the following technical solutions:
First aspect, the embodiment of the present invention provides a kind of embedded touch display unit, comprising:
Public electrode, described public electrode comprises at least two public electrode blocks, and public electrode block described in each is connected with a touch-control drive wire, and all public electrode blocks are divided at least one group of public electrode block;
Shift register circuit, comprise at least one shift register circuit unit of cascade, each described shift register circuit unit is connected with one group of public electrode block, at least one shift register circuit unit described is used for exporting touch-control drive singal to one group of public electrode block of correspondence and receiving touch sense signals successively
Control module, is connected with described shift register circuit, for exporting touch-control drive singal to described shift register circuit and receiving touch sense signals.
Second aspect, the embodiment of the present invention provides a kind of touch display screen, comprises the embedded touch display unit described in above-mentioned first aspect.
The embedded touch display unit that the embodiment of the present invention provides and touch display screen, be provided with shift register circuit and control module, this shift register circuit comprises at least one shift register circuit unit of cascade, each described shift register circuit unit is connected with one group of public electrode block, and at least one shift register circuit unit described is used for exporting touch-control drive singal to one group of public electrode block of correspondence and receiving touch sense signals successively.Namely each group public electrode block only need draw a data-interface by corresponding shift register circuit unit, this data-interface is electrically connected with a data-interface of control module again, consequently reduce the quantity that each group public electrode block and control module carry out the data-interface be electrically connected, drastically reduce the area the quantity that touch controllable function takies described control module data-interface, make described control module can reduce size, reduce cost of manufacture.。
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing the embodiment of the present invention is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the content of the embodiment of the present invention and these accompanying drawings.
Fig. 1 is the structural drawing realizing the touch display substrate of self-capacitance touch-control of prior art.
Fig. 2 is the structural drawing of the embedded touch display unit that the embodiment of the present invention one provides.
Fig. 3 is the principle of work block scheme of the embedded touch display unit that the embodiment of the present invention one provides.
Fig. 4 is the block diagram of the shift register circuit that the embodiment of the present invention two provides.
Fig. 5 is the block diagram of the latch sweep circuit that the embodiment of the present invention two provides.
Fig. 6 is the circuit structure diagram of the latch sweep 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 structural drawing of the selection circuit that the embodiment of the present invention three provides.
Fig. 9 is the oscillogram of the selection circuit that the embodiment of the present invention three provides.
Description of reference numerals:
11-public electrode; 111-public electrode block; 112-touch-control drive wire; 131-control module;
21-shift register circuit; 211-shift register circuit unit; 31-selection circuit; 311-selection unit;
32-latches sweep circuit; 321-latches scanning element.
Embodiment
The technical matters solved for making the present invention, the technical scheme of employing and the technique effect that reaches are clearly, be described in further detail below in conjunction with the technical scheme of accompanying drawing to the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those skilled in the art, not making the every other embodiment obtained under creative work prerequisite, belong 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 structural drawing of the embedded touch display unit that the embodiment of the present invention one provides.
As shown in Figure 2, the embedded touch display unit of the present embodiment, comprising:
Public electrode 11, described public electrode 11 comprises at least two public electrode blocks 111, and public electrode block 111 described in each is connected with a touch-control drive wire 112, and all public electrode blocks 111 are divided at least one group of public electrode block 111;
Shift register circuit 21, comprise at least one shift register circuit unit 211 of cascade, each described shift register circuit unit 211 is connected with one group of public electrode block 111, at least one shift register circuit unit 211 described exports touch-control drive singal for one group of public electrode block 111 successively to correspondence and receives touch sense signals
Control module 131, is connected with described shift register circuit 21, for exporting touch-control drive singal to described shift register circuit 21 and receiving touch sense signals.
Described public electrode 11 time-sharing multiplex is done to show and touch-control.
Fig. 3 is the principle of work block scheme of 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 module 131, the other end of each shift register circuit unit 211 is connected with the cabling corresponding to one group of public electrode block 111, and described shift register circuit unit 211 exports touch-control drive singal for one group of public electrode block 111 successively to correspondence and receives touch sense signals; Described shift register circuit unit 211 comprises latch sweep circuit 32 and selection circuit 31, and each described latch sweep circuit 32 comprises multiple latch scanning element 321, and each described selection circuit 31 comprises multiple selection unit 311.
Each group public electrode block 111 only need draw a data-interface by shift register circuit unit 211, this data-interface is electrically connected with control module 131 again, so control module 131 corresponds to one group of public electrode block, 111 need and arranges a data-interface, the quantity of control module 131 data-interface that such touch controllable function takies significantly reduces, and makes described control module 131 can reduce size, reduce cost of manufacture.
In the present embodiment, the embedded touch display unit provided, be provided with shift register circuit 21 and control module 131, this shift register circuit 21 comprises at least one shift register circuit unit 211 of cascade, each described shift register circuit unit 211 is connected with one group of public electrode block 111, and at least one shift register circuit unit 211 described exports touch-control drive singal for one group of public electrode block 111 successively to correspondence and receives touch sense signals.Namely each group public electrode block 111 only need draw a data-interface by corresponding shift register circuit unit 211, this data-interface is electrically connected with a data-interface of control module 131 again, consequently reduce the quantity that each group public electrode block 111 and control module 131 carry out the data-interface be electrically connected, the quantity of control module 131 data-interface that such touch controllable function takies significantly reduces, and makes described control module 131 can reduce size, reduce cost of manufacture.
Embodiment two:
The embodiment of the present invention two provides a kind of embedded touch display unit.Fig. 4 is the block diagram of the shift register circuit 21 that the embodiment of the present invention two provides.
As shown in Figure 4, on the basis of embodiment one, the described shift register circuit unit 211 of the present embodiment comprises latch sweep circuit 32 (Scane Unit as shown in Figure 4) and selection circuit 31 (Sel Unit as shown in Figure 4), the control end connection control unit 131 of described latch sweep circuit 32, first output terminal of described latch sweep circuit 32 connects the selection signal input part of described selection circuit 31, and the second output terminal of described latch sweep circuit 32 connects the control end latching sweep circuit 32 described in next stage;
The signal output part of described selection circuit 31 connects described public electrode block 111, and described selection circuit 31 also comprises touching signals end and common electrode signal end, is respectively used to input touch-control drive singal and common electrode signal.
Particularly, described embedded touch display unit also comprises glass substrate, described glass substrate is divided into viewing area and non-display area, and described public electrode 11 is arranged at the viewing area of described glass substrate, and described shift register circuit unit 211 is arranged at the non-display area of described glass substrate.Described control module 131 can be flexible PCB (FPC) or IC circuit.
Particularly, described control module 131 is for being arranged at the IC circuit of the non-display area of glass substrate.Described shift register circuit unit 211 is arranged at the non-display area of glass substrate and is between IC circuit public electrode 11.
Fig. 5 is the block diagram of the latch sweep circuit 32 that the embodiment of the present invention two provides.As shown in Figure 5, described latch sweep circuit 32 comprises latch (LATCH as shown in Figure 5), Sheffer stroke gate (NAND as shown in Figure 5), impact damper (BUFFER as shown in Figure 5) and reset switch (reset as shown in Figure 5), the first input end connection control unit 131 of described latch, the output terminal of described latch connects the input end of described Sheffer stroke gate, the output terminal of described Sheffer stroke gate connects the input end of described impact damper, the output terminal of described impact damper connects the selection signal input part of described selection circuit 31, second input end of described latch connects described reset switch.
Latch is a kind of storage unit circuit of paired pulses level-sensitive, and it can change state under the effect of specific input pulse level.Latch, exactly signal is kept in maintain certain level state.The main effect of latch is buffer memory, and next completes the asynchronous problem of controller at a high speed and peripheral hardware at a slow speed, and being thirdly solve the problem driven, is finally that solution I/O mouth can export the problem that also can input.Latch is the input utilizing Automatic level control data, and it comprises the latch not with enable control and is with the latch of enable control.
Sheffer stroke gate is a kind of elementary logic circuit of digital circuit, is and the superposing of door and not gate, has two to input and an output.If when input is high level (1), then export as low level (0); If have one in input at least for low level (0), then export as high level (1).The result of Sheffer stroke gate is first carried out and computing two input signals exactly, then carries out the result of inverse to this and operation result.NAND operation input requirements has two, if input all represents with 0 and 1, so with the product that the result of computing is exactly this two number.As 1 and 1 (there is signal at two ends), then exporting is 0; 1 and 0, then exporting is 1; 0 and 0, then exporting is 1.
Impact damper refers to buffer register, its point input buffer and output buffer two kinds.The former effect is that the data sent here by peripheral hardware are temporarily deposited, so that it takes away by processor; The effect of the latter is used to temporarily deposit the data that processor is sent to peripheral hardware.There is impact damper, the CPU of high speed operation just can have been made to rise with the peripheral hardware worked at a slow speed and coordinate and buffer action, realize the synchronous of data transmission.
Reset switch is that one can automatically reset switch, and after switch presses down, hand unclamps and namely returns back to original state, as recovered initial state or returning 0.
Fig. 6 is the circuit structure diagram of the latch sweep circuit 32 that the embodiment of the present invention two provides.As shown in Figure 6, described latch sweep circuit 32 comprises 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 (INV5 as shown in Figure 6), the first clocked inverter (CKINV1 as shown in Figure 6), second clock phase inverter (CKINV2 as shown in Figure 6), Sheffer stroke gate (NAND1 as shown in Figure 6) and P-type TFT (MF1 as shown in Figure 6);
Wherein, the input end connection control unit 131 respectively of described first phase inverter, the second source end of the first clocked inverter, first power end of second clock phase inverter, the input end connection control unit 131 of the first clocked inverter, the output terminal of the first phase inverter connects the first power end of the first clocked inverter respectively, the second source end of second clock phase inverter, the output terminal of the first clocked inverter connects the drain electrode of P-type TFT respectively, the output terminal of second clock phase inverter, the input end of the second phase inverter, the output terminal of the second phase inverter connects the input end of second clock phase inverter respectively, second input end of Sheffer stroke gate, the first input end connection control unit 131 of Sheffer stroke gate, the output terminal of Sheffer stroke gate connects the input end of the 3rd phase inverter, the output terminal of the 3rd phase inverter connects the input end of the 4th phase inverter, the output terminal of the 4th phase inverter connects the input end of the 5th phase inverter, the output terminal of the 5th phase inverter connects the selection signal input part of described selection circuit 31, the grid of P-type TFT connects reset signal end, the source electrode of P-type TFT connects voltage signal end.
It should be noted that, P-type TFT is the one of thin film transistor (TFT) (TFT).Thin film transistor (TFT) is the one of field effect transistor, comprises N-type TFT and P-type TFT.Production method mainly deposits various different film on substrate, as semiconductor active layer, dielectric layer and metal electrode layer.The main application of thin film transistor (TFT) makes thin-film transistor LCD device (TFT-LCD).Be made in display panel as thin film transistor (TFT), interfering with each other and increasing frame stabilization degree between each pixel can be reduced.In the TFT-LCD of reality produces, mainly utilize the ON state of a-Si:H TFT (being greater than cut-in voltage) to pixel capacitance rapid charge, utilize OFF state to keep the voltage of pixel capacitance, thus realize response fast and the good unification stored.Most TFT can be less than monocrystalline silicon (Eg=1.12eV) in rank.In addition, be everlasting dielectric, electrode and back panel wiring of TFT uses indium tin oxide (ITO), and ITO is transparent material, is applicable to the production of TFT-LCD.
The monocrystalline silicon MOSFET principle of work that the duty of TFT can utilize Weimer to characterize describes.For n ditch MOSFET, when grid imposes positive voltage, grid voltage produces electric field in gate insulation layer, and line of electric force points to semiconductor surface by gate electrode, and produces induced charge in surface.Along with gate voltage increases, semiconductor surface will change electron accumulation layer into by depletion layer, form inversion layer. when reaching strong inversion (when reaching cut-in voltage), between source, leakage, add that voltage just has charge carrier and passes through raceway groove.When source-drain voltage is very little, conducting channel is approximately a constant resistance, and leakage current increases with source-drain voltage and linearly increases.When source-drain voltage is very large, it can have an impact to gate voltage, and electric field in gate insulation layer is weakened to drain terminal gradually by source, and in semiconductor surface inversion layer, electronics is reduced to drain terminal gradually by source, and channel resistance increases along with source-drain voltage and increases.Leakage current increase becomes slow, and corresponding linear zone is to saturation region transition. and when source-drain voltage increases to a certain extent, drain terminal inversion layer thickness is kept to zero, and voltage is in increase, and device enters saturation region.
Certainly, above-mentioned various circuit, those skilled in the art can also, according to common practise, under the technical background of the technical program, select the components and parts of different circuit connecting modes and different parameters to realize function corresponding to each circuit, and no longer citing repeats herein.
In the present embodiment, embedded touch display unit is provided with shift register circuit 21 and control module 131, this shift register circuit 21 comprises at least one shift register circuit unit 211 of cascade, and each described shift register circuit unit 211 is connected with one group of public electrode block 111.This circuit design is drawn a cabling relative to existing public electrode block 111 described in each and is electrically connected with control module 131, control module 131 possesses the situation of the data-interface (array arrangements of public electrode block 111 one-tenth M*N) of M*N, accordingly the data-interface that each group public electrode block 111 is electrically connected with control module 131 is reduced as 1.Namely each group public electrode block 111 only need draw a data-interface by shift register circuit unit 211, and this data-interface is electrically connected with a data-interface of control module 131 again.And multiple shift register circuit unit 211 can also be arranged on glass substrate, control module 131 is arranged on FPC, so just be the reduction of the quantity of the data-interface (as I/O interface) of drawing from glass substrate, the cost of manufacture of glass substrate is constant, but the data-interface of control module 131 reduces, and the cost of manufacture of its embedded touch display unit can be reduced widely.
Embodiment three:
The embodiment of the present invention three provides a kind of embedded touch display unit.Fig. 7 is the first circuit structure diagram of the selection circuit 31 that the embodiment of the present invention three provides.
As shown in Figure 7, on the basis of embodiment two, the described selection circuit 31 of the present embodiment comprises hex inverter (U110 as shown in Figure 7), 7th phase inverter (U111 as shown in Figure 7), 8th phase inverter (U112 as shown in Figure 7), 9th phase inverter (U113 as shown in Figure 7), tenth phase inverter (U114 as shown in Figure 7), 11 phase inverter (U114 as shown in Figure 7), 12 phase inverter (U116 as shown in Figure 7), 13 phase inverter (U117 as shown in Figure 7), 14 phase inverter (U118 as shown in Figure 7), N-type TFT, first transmission gate and at least one transmission gate group (corresponding with as described in Figure 7 hold two transmission gates be connected with TX1reg1), described transmission gate group comprises the second transmission gate and the 3rd transmission gate,
Wherein, the input end of described hex inverter connects selection signal input part respectively, the input end of the first transmission gate, the output terminal of hex inverter connects the grid of N-type TFT respectively, the output terminal of the first transmission gate, the second source end connecting valve control signal end of the first transmission gate, the drain electrode of N-type TFT connects voltage signal end, first power end of the first transmission gate connects the input end of the 7th phase inverter respectively, the input end of the 11 phase inverter, the source electrode of N-type TFT, the output terminal of the 7th phase inverter connects the input end of the 8th phase inverter respectively, the input end of the tenth phase inverter, the output terminal of the 8th phase inverter connects the input end of the 9th phase inverter, the output terminal of the tenth phase inverter connects the input end of the second transmission gate, the output terminal of the 9th phase inverter connects the output terminal of the second transmission gate, the output terminal of the 11 phase inverter connects the input end of the 12 phase inverter respectively, the input end of the 14 phase inverter, the output terminal of the 12 phase inverter connects the input end of the 13 phase inverter, the output terminal of the 13 phase inverter connects the input end belonging to the 3rd transmission gate of identical traffic door group with described second transmission gate, the output terminal of the 14 phase inverter connects the output terminal belonging to the 3rd transmission gate of identical traffic door group with described second transmission gate, the second source end of the second transmission gate connects the first power end belonging to the 3rd transmission gate of identical traffic door group with described second transmission gate.
It should be noted that, when signal input part and switch controlling signal end are high level, TX1seg1 signal is TXH1 signal.
Concrete, Fig. 8 is the second circuit structural drawing of the selection circuit 31 that the embodiment of the present invention three provides.The described selection circuit 31 of this inventive embodiments, comprises five transmission gate groups, and each transmission gate group comprises two transmission gates.As shown in Figure 8, described selection circuit 31 comprises hex inverter (U110 as shown in Figure 8), 7th phase inverter (U111 as shown in Figure 8), 8th phase inverter (U112 as shown in Figure 8), 9th phase inverter (U113 as shown in Figure 8), tenth phase inverter (U114 as shown in Figure 8), 11 phase inverter (U115 as shown in Figure 8), 12 phase inverter (U116 as shown in Figure 8), 13 phase inverter (U117 as shown in Figure 8), 14 phase inverter (U118 as shown in Figure 8), N-type TFT, first transmission gate, 4th transmission gate (the holding one of two transmission gates be connected with TX1reg1 of corresponding diagram 8), 5th transmission gate (the holding two transmission gates two be connected with TX1reg1 of corresponding diagram 8), 6th transmission gate (the holding one of two transmission gates be connected with TX1reg2 of corresponding diagram 8), 7th transmission gate (the holding two transmission gates two be connected with TX1reg2 of corresponding diagram 8), 8th transmission gate (the holding one of two transmission gates be connected with TX1reg3 of corresponding diagram 8), 9th transmission gate (the holding two transmission gates two be connected with TX1reg3 of corresponding diagram 8), tenth transmission gate (the holding one of two transmission gates be connected with TX1reg4 of corresponding diagram 8), 11 transmission gate (the holding two transmission gates two be connected with TX1reg4 of corresponding diagram 8), 12 transmission gate (the holding one of two transmission gates be connected with TX1reg5 of corresponding diagram 8) and the 13 transmission gate (the holding two transmission gates two be connected with TX1reg4 of corresponding diagram 8),
Wherein, the input end of described hex inverter connects selection signal input part respectively, the input end of the first transmission gate, the output terminal of hex inverter connects the grid of N-type TFT respectively, the output terminal of the first transmission gate, the second source end connecting valve control signal end of the first transmission gate, the drain electrode of N-type TFT connects voltage signal end, and the first power end of the first transmission gate connects the input end of the 7th phase inverter respectively, the input end of the 11 phase inverter, the source electrode of N-type TFT, the output terminal of the 7th phase inverter connects the input end of the 8th phase inverter respectively, the input end of the tenth phase inverter, the output terminal of the 8th phase inverter connects the input end of the 9th phase inverter, and the output terminal of the tenth phase inverter connects the input end of the 4th transmission gate, the input end of the 6th transmission gate, the input end of the 8th transmission gate, the input end of the tenth transmission gate, the input end of the 12 transmission gate, the output terminal of the 9th phase inverter connects the output terminal of the 4th transmission gate respectively, the output terminal of the 6th transmission gate, the output terminal of the 8th transmission gate, the output terminal of the tenth transmission gate, the output terminal of the 12 transmission gate, the output terminal of the 11 phase inverter connects the input end of the 12 phase inverter respectively, the input end of the 14 phase inverter, the output terminal of the 12 phase inverter connects the input end of the 13 phase inverter, and the output terminal of the 13 phase inverter connects the input end of the 5th transmission gate respectively, the input end of the 7th transmission gate, the input end of the 9th transmission gate, the input end of the 11 transmission gate, the input end of the 13 transmission gate, the output terminal of the 14 phase inverter connects the output terminal of the 5th transmission gate respectively, the output terminal of the 7th transmission gate, the output terminal of the 9th transmission gate, the output terminal of the 11 transmission gate, the output terminal of the 13 transmission gate, the second source end of the 4th transmission gate connects the first power end of the 5th transmission gate, the second source end of the 6th transmission gate connects the first power end of the 7th transmission gate, the second source end of the 8th transmission gate connects the first power end of the 9th transmission gate, the second source end of the tenth transmission gate connects the first power end of the 11 transmission gate, and the second source end of the 12 transmission gate connects the first power end of the 13 transmission gate.
Particularly, Fig. 9 is the oscillogram of the selection circuit 31 that the embodiment of the present invention three provides.As shown in Figure 9, when signal input part and switch controlling signal end are high level, TX1seg1 signal is TXH1 signal, TX1seg2 signal is TXH2 signal, TX1seg3 signal is TXH3 signal, and TX1seg4 signal is TXH4 signal, and TX1seg5 signal is TXH5 signal, if also have other transmission gate group to be electrically connected, then the rest may be inferred.
Preferably, each arranges described public electrode block 111 and forms one group of public electrode 11.
Concrete, when being in the touch-control stage, described latch sweep circuit 32 controls selection circuit 31, selects touching signals end and touch-control drive wire 112 conducting, exports touch-control drive singal to described public electrode block 111; When being in the display stage, described latch sweep circuit 32 controls selection circuit 31, selects common electrode signal end and touch-control drive wire 112 conducting, to described public electrode block 111 output display drive singal.
It should be noted that, embedded touch display unit comprises outside foregoing circuit, can also comprise for supporting the miscellaneous part that embedded touch display unit normally works, wherein, described embedded touch display unit is the embedded touch display unit described in each embodiment above-mentioned.Above-mentioned embedded touch display unit can be the embedded touch display unit etc. of the embedded touch display unit of mobile phone, the embedded touch display unit of desktop computer, the embedded touch display unit of notebook, the embedded touch display unit of panel computer, the embedded touch display unit of electron album or Electronic Paper.
In touch-control duty, when touch-control drive electrode is applied in touch-control drive singal, the electric capacity formed between touch-control drive electrode and public electrode 11 can have an impact to the rotation of liquid crystal molecule, therefore, in order to avoid above-mentioned situation rotates the impact produced on liquid crystal molecule, be preferably, the display working condition of embedded touch display unit and touch-control duty adopt time-sharing work pattern.
Certainly, above-mentioned various circuit, those skilled in the art can also, according to common practise, under the technical background of the technical program, select the components and parts of different circuit connecting modes and different parameters to realize function corresponding to each circuit, and no longer citing repeats herein.
Embedded touch display unit in the present embodiment, comprise shift register circuit 21, between described shift register circuit 21 and control module 131, many cablings are set, every root cabling is used for outputing signal to a row public electrode block 111 of correspondence, makes the multiple public electrode blocks 111 being positioned at row share a cabling.A cabling transmits the signal of a row public electrode block 111, to be connected with control module 131 respectively by cabling relative to each public electrode block 111 in a row public electrode block 111 and to carry out for Signal transmissions, decreasing the quantity of the I/O interface needed for control module 131 significantly.
Embodiment four:
The embodiment of the touch display screen provided for the embodiment of the present invention below.Embodiment and the above-mentioned embedded touch display unit embodiment of touch display screen belong to same design, the detail content of not detailed description in the embodiment of touch display screen, can with reference to above-mentioned embedded touch display unit embodiment.
The touch display screen that this enforcement provides, comprises any one embedded touch display unit of above-described embodiment one to three, about the relevant description of principle of work and the explanation of related notion and explanation, refers to above-described embodiment one to three, does not repeat them here.
The embodiment of the present invention four provides a kind of touch display screen, comprises above-mentioned embedded touch display unit.
The touch display screen that the present embodiment provides, be provided with shift register circuit 21 and control module 131, this shift register circuit 21 comprises at least one shift register circuit unit 211 of cascade, each described shift register circuit unit 211 is connected with one group of public electrode block 111, and at least one shift register circuit unit 211 described exports touch-control drive singal for one group of public electrode block 111 successively to correspondence and receives touch sense signals.Namely each group public electrode block 111 only need draw a data-interface by corresponding shift register circuit unit 211, this data-interface is electrically connected with a data-interface of control module 131 again, consequently reduce the quantity that each group public electrode block 111 and control module 131 carry out the data-interface be electrically connected, significantly reduce the quantity decreasing described control module 131 data-interface that touch controllable function takies, make described control module 131 can reduce size, reduce cost of manufacture.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (10)
1. an embedded touch display unit, is characterized in that, comprising:
Public electrode, described public electrode comprises at least two public electrode blocks, and public electrode block described in each is connected with a touch-control drive wire, and all public electrode blocks are divided at least one group of public electrode block;
Shift register circuit, comprise at least one shift register circuit unit of cascade, each described shift register circuit unit is connected with one group of public electrode block, at least one shift register circuit unit described is used for exporting touch-control drive singal to one group of public electrode block of correspondence and receiving touch sense signals successively
Control module, is connected with described shift register circuit, for exporting touch-control drive singal to described shift register circuit and receiving touch sense signals.
2. embedded touch display unit according to claim 1, it is characterized in that, described shift register circuit unit comprises latch sweep circuit and selection circuit, the control end connection control unit of described latch sweep circuit, first output terminal of described latch sweep circuit connects the selection signal input part of described selection circuit, and the second output terminal of described latch sweep circuit connects the control end latching sweep circuit described in next stage;
The signal output part of described selection circuit connects described public electrode block, and described selection circuit also comprises touching signals end and common electrode signal end, is respectively used to input touch-control drive singal and common electrode signal.
3. embedded touch display unit according to claim 2, it is characterized in that, described latch sweep circuit comprises latch, Sheffer stroke gate, impact damper and reset switch, the first input end connection control unit of described latch, the output terminal of described latch connects the input end of described Sheffer stroke gate, the output terminal of described Sheffer stroke gate connects the input end of described impact damper, the output terminal of described impact damper connects the selection signal input part of described selection circuit, and the second input end of described latch connects described reset switch.
4. embedded touch display unit according to claim 2, it is characterized in that, described latch sweep circuit comprises the first 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, Sheffer stroke gate and P-type TFT;
Wherein, the input end connection control unit respectively of described first phase inverter, the second source end of the first clocked inverter, first power end of second clock phase inverter, the input end connection control unit of the first clocked inverter, the output terminal of the first phase inverter connects the first power end of the first clocked inverter respectively, the second source end of second clock phase inverter, the output terminal of the first clocked inverter connects the drain electrode of P-type TFT respectively, the output terminal of second clock phase inverter, the input end of the second phase inverter, the output terminal of the second phase inverter connects the input end of second clock phase inverter respectively, second input end of Sheffer stroke gate, the first input end connection control unit of Sheffer stroke gate, the output terminal of Sheffer stroke gate connects the input end of the 3rd phase inverter, the output terminal of the 3rd phase inverter connects the input end of the 4th phase inverter, the output terminal of the 4th phase inverter connects the input end of the 5th phase inverter, the output terminal of the 5th phase inverter connects the selection signal input part of described selection circuit, the grid of P-type TFT connects reset signal end, the source electrode of P-type TFT connects voltage signal end.
5. embedded touch display unit according to claim 2, it is characterized in that, described selection circuit comprises hex inverter, the 7th phase inverter, the 8th phase inverter, the 9th phase inverter, the tenth phase inverter, the 11 phase inverter, the 12 phase inverter, the 13 phase inverter, the 14 phase inverter, N-type TFT, the first transmission gate and at least one transmission gate group, and described transmission gate group comprises the second transmission gate and the 3rd transmission gate;
Wherein, the input end of described hex inverter connects selection signal input part respectively, the input end of the first transmission gate, the output terminal of hex inverter connects the grid of N-type TFT respectively, the output terminal of the first transmission gate, the second source end connecting valve control signal end of the first transmission gate, the drain electrode of N-type TFT connects voltage signal end, first power end of the first transmission gate connects the input end of the 7th phase inverter respectively, the input end of the 11 phase inverter, the source electrode of N-type TFT, the output terminal of the 7th phase inverter connects the input end of the 8th phase inverter respectively, the input end of the tenth phase inverter, the output terminal of the 8th phase inverter connects the input end of the 9th phase inverter, the output terminal of the tenth phase inverter connects the input end of the second transmission gate, the output terminal of the 9th phase inverter connects the output terminal of the second transmission gate, the output terminal of the 11 phase inverter connects the input end of the 12 phase inverter respectively, the input end of the 14 phase inverter, the output terminal of the 12 phase inverter connects the input end of the 13 phase inverter, the output terminal of the 13 phase inverter connects the input end belonging to the 3rd transmission gate of identical traffic door group with described second transmission gate, the output terminal of the 14 phase inverter connects the output terminal belonging to the 3rd transmission gate of identical traffic door group with described second transmission gate, the second source end of the second transmission gate connects the first power end belonging to the 3rd transmission gate of identical traffic door group with described second transmission gate.
6. embedded touch display unit according to claim 2, it is characterized in that, described selection circuit comprises hex inverter, the 7th phase inverter, the 8th phase inverter, the 9th phase inverter, the tenth phase inverter, the 11 phase inverter, the 12 phase inverter, the 13 phase inverter, the 14 phase inverter, N-type TFT, the first transmission gate, the 4th transmission gate, the 5th transmission gate, the 6th transmission gate, the 7th transmission gate, the 8th transmission gate, the 9th transmission gate, the tenth transmission gate, the 11 transmission gate, the 12 transmission gate and the 13 transmission gate;
Wherein, the input end of described hex inverter connects selection signal input part respectively, the input end of the first transmission gate, the output terminal of hex inverter connects the grid of N-type TFT respectively, the output terminal of the first transmission gate, the second source end connecting valve control signal end of the first transmission gate, the drain electrode of N-type TFT connects voltage signal end, and the first power end of the first transmission gate connects the input end of the 7th phase inverter respectively, the input end of the 11 phase inverter, the source electrode of N-type TFT, the output terminal of the 7th phase inverter connects the input end of the 8th phase inverter respectively, the input end of the tenth phase inverter, the output terminal of the 8th phase inverter connects the input end of the 9th phase inverter, and the output terminal of the tenth phase inverter connects the input end of the 4th transmission gate, the input end of the 6th transmission gate, the input end of the 8th transmission gate, the input end of the tenth transmission gate, the input end of the 12 transmission gate, the output terminal of the 9th phase inverter connects the output terminal of the 4th transmission gate respectively, the output terminal of the 6th transmission gate, the output terminal of the 8th transmission gate, the output terminal of the tenth transmission gate, the output terminal of the 12 transmission gate, the output terminal of the 11 phase inverter connects the input end of the 12 phase inverter respectively, the input end of the 14 phase inverter, the output terminal of the 12 phase inverter connects the input end of the 13 phase inverter, and the output terminal of the 13 phase inverter connects the input end of the 5th transmission gate respectively, the input end of the 7th transmission gate, the input end of the 9th transmission gate, the input end of the 11 transmission gate, the input end of the 13 transmission gate, the output terminal of the 14 phase inverter connects the output terminal of the 5th transmission gate respectively, the output terminal of the 7th transmission gate, the output terminal of the 9th transmission gate, the output terminal of the 11 transmission gate, the output terminal of the 13 transmission gate, the second source end of the 4th transmission gate connects the first power end of the 5th transmission gate, the second source end of the 6th transmission gate connects the first power end of the 7th transmission gate, the second source end of the 8th transmission gate connects the first power end of the 9th transmission gate, the second source end of the tenth transmission gate connects the first power end of the 11 transmission gate, and the second source end of the 12 transmission gate connects the first power end of the 13 transmission gate.
7. embedded touch display unit according to claim 1, is characterized in that, each arranges described public electrode block and forms one group of public electrode.
8. embedded touch display unit according to claim 2, it is characterized in that, when being in the touch-control stage, described latch sweep circuit controls selection circuit, select touching signals end and the conducting of touch-control drive wire, export touch-control drive singal to described public electrode block; When being in the display stage, described latch sweep circuit controls selection circuit, selects common electrode signal end and the conducting of touch-control drive wire, to described public electrode block output display drive singal.
9. embedded touch display unit according to claim 1, it is characterized in that, also comprise glass substrate, described glass substrate is divided into viewing area and non-display area, described public electrode is arranged at the viewing area of described glass substrate, and described shift register circuit unit is arranged at the non-display area of described glass substrate.
10. a touch display screen, is characterized in that, comprises the embedded touch display unit as described in claim 1 to 9 any one.
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