CN106020534B - A kind of touch drive circuit, array substrate and touch control display apparatus - Google Patents

A kind of touch drive circuit, array substrate and touch control display apparatus Download PDF

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Publication number
CN106020534B
CN106020534B CN201610310454.8A CN201610310454A CN106020534B CN 106020534 B CN106020534 B CN 106020534B CN 201610310454 A CN201610310454 A CN 201610310454A CN 106020534 B CN106020534 B CN 106020534B
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China
Prior art keywords
end
electrically connected
pmos tube
touch
signal input
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CN201610310454.8A
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Chinese (zh)
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CN106020534A (en
Inventor
孙莹
许育民
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厦门天马微电子有限公司
天马微电子股份有限公司
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Priority to CN201610310454.8A priority Critical patent/CN106020534B/en
Publication of CN106020534A publication Critical patent/CN106020534A/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412Digitisers structurally integrated in a display
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416Control or interface arrangements specially adapted for digitisers
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means

Abstract

The invention discloses a kind of touch drive circuit, array substrate and touch control display apparatus, wherein, the touch drive circuit includes cascade multiple scanning elements and multiple selection output units, each selection output unit is correspondingly arranged with a scanning element, and each selection output unit corresponds to a touch control electrode;The scanning element exports touch-control to the selection output unit by the control signal output and controls signal, so that the selection output unit controls signal according to the touch-control exports touch-control drive signal in the touch-control period to corresponding touch control electrode, and it is all made of PMOS tube to corresponding touch control electrode outputting common voltage signal, the cascade scanning element and the multiple selection output unit in the display period and is made.Technical solution provided by the invention, display device narrow frame easy to implement and touch drive circuit can carry PMOS panels and save MASK.

Description

A kind of touch drive circuit, array substrate and touch control display apparatus

Technical field

The present embodiments relate to a kind of touch-control display technology more particularly to touch drive circuit, array substrate and touch-controls Display device.

Background technology

Recently, with the development of display technology, the application of display device is also more and more extensive, and existing display device is generally all The function of having touch-control, with user-friendly.

The existing display device for having touch function generally uses complementary metal oxide semiconductor (Complementary Metal Oxide Semiconductor, COMS) integrated circuit formation touch drive circuit, the PMOS panels that can not arrange in pairs or groups use, Driving circuit is collectively constituted by NOMS pipes and PMOS tube, needs multiple tracks metal layer manufacture craft (MASK) formation in forming process COMS driving circuits.

Invention content

A kind of touch drive circuit of present invention offer, array substrate and touch control display apparatus, to solve to show in the prior art The problem of showing device touch drive circuit can not carry PMOS panels and need more MASK.

In a first aspect, an embodiment of the present invention provides a kind of touch drive circuit, including cascade multiple scanning elements and Multiple selection output units, each selection output unit are correspondingly arranged with a scanning element, each selection output Unit corresponds to a touch control electrode;

The control signal output of the scanning element is electrically connected with the control terminal of the selection output unit, the scanning Unit exports touch-control to the selection output unit by the control signal output and controls signal, so that the selection exports Unit controls signal according to the touch-control and exports touch-control drive signal to corresponding touch control electrode in the touch-control period, and aobvious Show the period to corresponding touch control electrode outputting common voltage signal, the cascade scanning element and the multiple selection output Unit is all made of PMOS tube and is made.

Second aspect, the embodiment of the present invention additionally provide a kind of array substrate, including display area and surround the display The peripheral region in region, the peripheral region are provided with the touch drive circuit in above-mentioned first aspect, and the display area is set It is equipped with touch control electrode, the driving signal output end electricity of touch control electrode selection output unit corresponding with touch drive circuit Connection.

The third aspect, the embodiment of the present invention additionally provide the battle array in a kind of touch control display apparatus, including above-mentioned second aspect Color membrane substrates that row substrate and the array substrate are oppositely arranged and between the array substrate and the color membrane substrates Liquid crystal layer.

Cascade scanning element in touch drive circuit in the present invention is all made of PMOS tube device with selection output unit Part is made, compared with the prior art the middle touch drive circuit using COMS, and the touch drive circuit made of PMOS tube can take PMOS panels are carried, and then reduce the manufacture craft i.e. saving MASK for making metal layer, save cost.

Description of the drawings

Fig. 1 is the structural schematic diagram of the first touch drive circuit provided in an embodiment of the present invention;

Fig. 2 a are the structural schematic diagrams of second of touch drive circuit provided in an embodiment of the present invention;

Fig. 2 b are a kind of structural schematic diagrams of scanning element provided in an embodiment of the present invention;

Fig. 2 c are the input signal and output end output signal of the input terminal of scanning element provided in an embodiment of the present invention Sequence diagram;

Fig. 3 a are the structural schematic diagrams of the third touch drive circuit provided in an embodiment of the present invention;

Fig. 3 b are a kind of structural schematic diagrams of selection output unit provided in an embodiment of the present invention;

Fig. 3 c are the input signal and output end output letter of the input terminal of selection output unit provided in an embodiment of the present invention Number sequence diagram;

Fig. 4 a are the structural schematic diagrams of the 4th kind of touch drive circuit provided in an embodiment of the present invention;

Fig. 4 b are the sequence diagrams that scanning element works in a kind of Fig. 4 a provided in an embodiment of the present invention;

Fig. 5 is the structural schematic diagram of the 5th kind of touch drive circuit provided in an embodiment of the present invention;

Fig. 6 a are the structural schematic diagrams of the first array substrate provided in an embodiment of the present invention;

Fig. 6 b are the structural schematic diagrams of second of array substrate provided in an embodiment of the present invention;

Fig. 6 c are the structural schematic diagrams of the third array substrate provided in an embodiment of the present invention;

Fig. 7 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention.

Specific implementation mode

The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched The specific embodiment stated is used only for explaining the present invention rather than limitation of the invention.It also should be noted that in order to just Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.

Fig. 1 is the structural schematic diagram of the first touch drive circuit provided in an embodiment of the present invention.The touch drive circuit 10 include cascade multiple scanning elements 11 and multiple selection output units 12, and each selection output unit 12 is swept with one It retouches unit 11 to be correspondingly arranged, each selection output unit 12 corresponds to a touch control electrode 13;

The control signal output of the scanning element 11 is electrically connected with the control terminal of the selection output unit 12, described Scanning element 11 exports touch-control to the selection output unit 12 by the control signal output and controls signal, so that described It selects output unit 12 to control signal according to the touch-control and exports touch-control driving to corresponding touch control electrode 13 in the touch-control period Signal, and showing the period to 13 outputting common voltage signal of corresponding touch control electrode, the cascade scanning element 11 PMOS tube is all made of with the multiple selection output unit 12 to be made.

In the present embodiment, touch drive circuit can be integrated in touch control display apparatus, public in touch control display apparatus Electrode is multiplexed with touch control electrode, selects output unit that can control signal according to the touch-control and is touched to corresponding in the touch-control period It controls electrode and exports touch-control drive signal, and realized to corresponding touch control electrode outputting common voltage signal in the display period The multiplexing of touch-control and display.Cascade scanning element in touch drive circuit is all made of PMOS tube device with selection output unit It is made, the touch drive circuit made of PMOS tube can carry PMOS panels, and then reduce the manufacture craft for making metal layer MASK is saved, cost is saved.

In the present embodiment, further, it is that second of touch-control provided in an embodiment of the present invention drives referring to Fig. 2 a, Fig. 2 a The structural schematic diagram of circuit, the scanning element 11 include trigger signal input terminal IN, the first clock signal input terminal CLK1, the Two clock signal input terminal CLK2, third clock signal input terminal CLK3, secondary trigger signal output end OUT3, the first control letter Number output end OUT1 and second control signal output end OUT2;Wherein, the trigger signal input terminal of first order scanning element with touch Signalling line is electrically connected, the secondary of the trigger signal input terminal and upper level scanning element of other grade of scanning element in addition to the first order Trigger signal output end is electrically connected;

The selection output unit 12 includes first control signal input terminal IN1, second control signal input terminal IN2 and drive Dynamic signal output end TOUT, the first control signal output end OUT1 are electrically connected with the first control signal input terminal IN1, The second control signal output end OUT2 is electrically connected with the second control signal input terminal IN2;

The scanning element is used for according to first clock signal input terminal, the second clock signal input part and institute The trigger signal of the clock signal and trigger signal input terminal input of stating the input of third clock signal input terminal generates the One touch-control controls signal, and generates the second touch-control and control signal, the first touch-control control signal and the second touch-control control Signal processed reverse signal each other;

The selection output unit is used to control letter according to the first touch-control inputted from the first control signal input terminal Number, and signal is controlled from the second touch-control of second control signal input terminal input, it is touched to corresponding in the touch-control period It controls electrode and exports touch-control drive signal, and showing the period to corresponding touch control electrode outputting common voltage signal.Wherein, The driving signal output end of selection output unit is electrically connected with touch control electrode.

Further, it is a kind of structural schematic diagram of scanning element provided in an embodiment of the present invention, institute referring to Fig. 2 b, Fig. 2 b It includes the first PMOS tube P1, the second PMOS tube P2, third PMOS tube P3, the 4th PMOS tube P4, the 5th PMOS to state scanning element 11 Pipe P5, the 6th PMOS tube P6, the 7th PMOS tube P7, the first capacitance C1, the second capacitance C2, the first high level signal input terminal VGH1 With the first low level signal input terminal VGL1;

The grid of the first PMOS tube P1 is electrically connected with first node N1, and first end is electrically connected with second node N2, the Two ends are electrically connected with the first high level signal input terminal VGH1;

The grid of the second PMOS tube P2 is electrically connected with the second clock signal input part CLK2, first end with it is described Second node N2 electrical connections, second end are electrically connected with the trigger signal input terminal IN;

The grid of the third PMOS tube P3 is electrically connected with the first clock signal input terminal CLK1, first end with it is described Second node N2 electrical connections, second end are electrically connected with the first low level signal input terminal VGL1;

The grid of the 4th PMOS tube P4 is electrically connected with the second node N2, first end and first node N1 electricity Connection, second end are electrically connected with the first high level signal input terminal VGH1;

The grid of the 5th PMOS tube P5 is electrically connected with the first node N1, first end and the secondary trigger signal Output end OUT3 electrical connections, second end are electrically connected with the first high level signal input terminal VGH1;

The grid of the 6th PMOS tube P6 is electrically connected with the first end of the 7th PMOS tube P7, first end with it is described time The OUT3 electrical connections of grade trigger signal output end, second end are electrically connected with the third clock signal input terminal CLK3;

The grid of the 7th PMOS tube P7 is electrically connected with the first low level signal input terminal VGL1, first end and institute The grid electrical connection of the 6th PMOS tube P6 is stated, second end is electrically connected with the second node N2;

The first end of the first capacitance C1 is electrically connected with the first end of the 6th PMOS tube P6, second end and described the The first end of seven PMOS tube P7 is electrically connected;

The first end of the second capacitance C2 is electrically connected with the first node N1, and second end is believed with first high level The VGH1 electrical connections of number input terminal;

The first node N1 is electrically connected with the first control signal output end OUT1, the second node N2 with it is described The OUT2 electrical connections of second control signal output end.

Fig. 2 c are a kind of sequence diagrams of the output signal of the input signal and output end of each input terminal in Fig. 2 b.In Fig. 2 c In, STV is the trigger signal of trigger signal input terminal IN input, and SCLK1 is the of the first clock signal input terminal CLK1 inputs One clock signal, SCLK2 are the second clock signal of second clock signal input part CLK2 inputs, and SCLK3 believes for third clock The third clock signal of number input terminal CLK3 inputs.The first high level signal input terminal VGH1 in Fig. 2 b inputs high level letter Number, the first defeated VGL1 of low level signal input terminal enters a low level signal.Next combine Fig. 2 b and Fig. 2 c to scanning element Operation principle is described further.

Referring to Fig. 2 b and Fig. 2 c, in the t11 stages, the first clock signal SCLK1 is low level, and third PMOS tube P3 is connected, First node N1 current potential clampers are the current potential of the first low level signal input terminal VGL1, are low level, the first PMOS tube P1 and the Five PMOS tube P5 conductings, at this point, the current potential of second node N2 is the current potential of the first high level signal input terminal VGH1, for high electricity Flat, the 4th PMOS tube P4 cut-offs, the grid of the 7th PMOS tube P7 is electrically connected with the first low level signal input terminal VGL1, and the 7th PMOS tube P7 is connected always, the 6th PMOS tube P6 cut-offs, and second clock signal SCLK2 is high level, the second PMOS tube P2 cut-offs. This stage, the defeated end OUT1 of first control signal export low level, and second control signal output end OUT2 exports high level.Due to 5th PMOS tube P5 conductings, the current potential of secondary trigger signal output end OUT3 is the electricity of the first high level signal input terminal VGH1 Position, secondary trigger signal output end OUT3 export high level.

In the t12 stages, the first clock signal SCLK1 is high level, third PMOS tube P3 cut-offs, due to the second capacitance C2's Effect, the current potential of first node N1 do not change, and are low level, and the state of other PMOS tube is consistent with t11 stage conditions.This rank Section, the defeated end OUT1 of first control signal export low level, and second control signal output end OUT2 exports high level, secondary triggering Signal output end OUT3 exports high level.

In the t13 stages, the first clock signal SCLK1 is high level, the P3 cut-offs of third PMOS tube, second clock signal SCLK2 is low level, and trigger signal STV is low level, the second PMOS tube P2 conductings, and second node N2 is low level, the 4th PMOS tube P4 conducting, first node N1 current potentials are equal to the current potential of the first high level signal input terminal VGH1, are high level, and first PMOS tube P1 and the 5th PMOS tube P5 cut-offs, although the grid of this 6th PMOS tube of stage is low level, since third clock is believed Number SCLK3 is high level, the 6th PMOS tube P6 cut-offs.This stage, the defeated end OUT1 output high level of first control signal, second Control signal output OUT2 exports low level, and secondary trigger signal output end OUT3 exports high level.

In the t14 stages, the first clock signal SCLK1 is high level, the P3 cut-offs of third PMOS tube, second clock signal SCLK2 is high level, and trigger signal STV is high level, and the second PMOS tube P2 ends, since the 7th PMOS tube P7 is constantly on, Under the first capacitance C1 effects, second node N2 current potentials do not change, and are low level, and the state of other pipes is consistent with the t13 stages, First node N1 is high level.At this point, the end OUT1 output high level that first control signal is defeated, second control signal output end OUT2 exports low level, and secondary trigger signal output end exports high level.

In the t15 stages, third clock signal SCLK3 is low level, due to the current potential of this 6th PMOS tube P6 grid of stage It is identical as second node current potential, it is low level, the 6th PMOS tube P6 conductings, the first clock signal SCLK1 and second clock signal SCLK2 is high level, and the state of other PMOS tube is consistent with the t14 stages.This stage, the defeated end OUT1 outputs of first control signal High level, second control signal output end OUT2 export low level, due to the 6th PMOS tube P6 conductings, secondary trigger signal output End output low level.

In the t16 stages, third clock signal SCLK3 is high level, the 6th PMOS tube P6 cut-offs, the state of other PMOS tube It is consistent with the t15 stages.This stage, the defeated end OUT1 of first control signal export high level, second control signal output end OUT2 Export low level.

In the stage after t16, the state of pipe is consistent with the t11 stages with the current potential of node in scanning element, repeats no more.

In the present embodiment, further, it is that the third touch-control provided in an embodiment of the present invention drives referring to Fig. 3 a, Fig. 3 a The structural schematic diagram of circuit, the selection output unit 12 further includes defeated for inputting the first switch signal of first switch signal Enter to hold TXHSW, the second switch signal input part TXLSW for inputting second switch signal, for inputting the first fixed level First fixed level signal input part TXH of signal, and the second fixed level letter for inputting the second fixed level signal Number input terminal TXL;

Wherein, the first switch signal and the second switch signal reverse signal each other.

The selection output unit 12 controls signal according to first touch-control, second touch-control controls signal, described First switch signal, the second switch signal, the first fixed level signal and the second fixed level signal are touching It controls period generation touch-control drive signal and is exported to corresponding touch control electrode 13, and common voltage is generated in the display period Signal is simultaneously exported to corresponding touch control electrode.

Further, referring to Fig. 3 b, the selection output unit includes the 8th PMOS tube P8, the 9th PMOS tube P9, the tenth PMOS tube P10, the 11st PMOS tube P11, the 12nd PMOS tube P12, the 13rd PMOS tube P13, the 14th PMOS tube P14, 15 PMOS tube P15, the 16th PMOS tube P16, the 17th PMOS tube P17, the second high level signal input terminal VGH2 and second Low level signal input terminal VGL2;

The grid of the 8th PMOS tube P8 is electrically connected with the second control signal input terminal IN2, first end with it is described The first end of 9th PMOS tube P9 is electrically connected, and second end is electrically connected with the first switch signal input part TXHSW;

The grid of the 9th PMOS tube P9 is electrically connected with the first control signal input terminal IN1, first end with it is described The first end of 8th PMOS tube P8 is electrically connected, and second end is electrically connected with the second low level signal input terminal VGL2;

The grid of the tenth PMOS tube P10 is electrically connected with the second control signal input terminal IN2, first end with it is described The first end of 11st PMOS tube P11 is electrically connected, and second end is electrically connected with the second switch signal input part TXLSW;

The grid of the 11st PMOS tube P11 is electrically connected with the first control signal input terminal IN1, first end and institute The first end electrical connection of the tenth PMOS tube P10 is stated, second end is electrically connected with the second high level signal input terminal VGH2;

The grid of the 12nd PMOS tube P12 is electrically connected with the first end of the 8th PMOS tube P8, first end and institute The first end electrical connection of the 13rd PMOS tube P13 is stated, second end is electrically connected with the second high level signal input terminal VGH2;

The grid of the 13rd PMOS tube P13 is electrically connected with the first end of the tenth PMOS tube P10, first end and institute The first end electrical connection of the 12nd PMOS tube P12 is stated, second end is electrically connected with the second low level signal input terminal VGL2;

The grid of the 14th PMOS tube P14 is electrically connected with the first end of the tenth PMOS tube 10, first end and institute The first end electrical connection of the 15th PMOS tube P15 is stated, second end is electrically connected with the second high level signal input terminal VGH2;

The grid of the 15th PMOS tube P15 is electrically connected with the first end of the 8th PMOS tube P8, first end and institute The first end electrical connection of the 14th PMOS tube P14 is stated, second end is electrically connected with the second low level signal input terminal VGL2;

The grid of the 16th PMOS tube P16 is electrically connected with the first end of the 12nd PMOS tube P12, first end with The first end of the 17th PMOS tube P17 is electrically connected, and second end is electrically connected with the first fixed level signal input part TXH It connects;

The grid of the 17th PMOS tube P17 is electrically connected with the first end of the 14th PMOS tube P14, first end with The first end of the 16th PMOS tube P16 is electrically connected, and second end is electrically connected with the second fixed level signal input part TXL It connects;

Wherein, the first end of the 16th PMOS tube P16 and the first end of the 17th PMOS tube P17 are electrically connected to drive signal Output end TOUT.

Fig. 3 c are one kind of the input signal for each input terminal that output unit is selected in Fig. 3 b and the output signal of output end Sequence diagram.In figure 3 c, CTX1 is that the first touch-control of first control signal input terminal IN1 inputs controls signal, and CTX2 second is controlled Second touch-control of signal input part IN2 processed input controls signal, and STXHSW is the of first switch signal input part TXHSW inputs One switching signal, STXLSW are the second switch signal of second switch signal input part TXLSW inputs, and STXH is the first fixation electricity First fixed level signal of flat signal input part TXH inputs, the second of the TXL inputs of STXL the second fixed level signal input parts Fixed level signal;The second high level signal input terminal VGH2 in Fig. 3 b inputs a high level signal, the second low level signal Input terminal VGL2 inputs a low level signal.Next the operation principle of scanning element is done further in conjunction with Fig. 3 b and Fig. 3 c Explanation.

When the first touch-control control signal CTX1 is low level, and the second touch-control control signal CTX2 is high level, the 8th PMOS tube P8 and the tenth PMOS tube P10 cut-offs, the 9th PMOS tube P9 and the 11st PMOS tube P11 conductings, the 12nd PMOS tube P12 The current potential of grid and the 15th PMOS tube P15 grids is equal to the current potential of the second low level signal input terminal VGL2, is low level, the 12 PMOS tube P12 and the 15th PMOS tube P15 conductings, the 13rd PMOS tube P13 grids and the 14th PMOS tube P14 grids Current potential is equal to the current potential of the second high level signal input terminal VGH2, is high level, the 13rd PMOS tube P13 and the 14th PMOS tube P4 ends, and the 16th PMOS tube P16 grid potentials are equal to the current potential of the second high level signal input terminal VGH2, the 16th PMOS tube Cut-off, the 17th PMOS tube P17 grid potentials be equal to the second low level signal input terminal VGL2 current potential, be low level, the tenth Seven PMOS tube P17 conductings, the first end and the driving signal output end TOUT of selection output unit of the 17th PMOS tube P17 are electrically connected It connects, selects the signal of the driving signal output end TOUT outputs of output unit to be equal to the second fixed level signal, believe for low level Number.

When the first touch-control control signal CTX1 is high level, and the second touch-control control signal CTX2 is low level, the 8th PMOS tube P8 and the tenth PMOS tube P10 conductings, the 9th PMOS tube P9 and the 11st PMOS tube P11 cut-offs, the 12nd PMOS tube P12 The signal of grid and the 15th PMOS tube P15 grids is first switch signal, the 13rd PMOS tube P13 grids and the 14th PMOS The signal of pipe P14 grids is second switch signal.

It is high electricity in first switch signal since first switch signal and second switch signal are signal opposite each other It is flat, when second switch signal is low level, the 12nd PMOS tube P12 and the 15th PMOS tube P15 cut-offs, the 13rd PMOS tube P13 and the 14th PMOS tube P14 conductings, the 16th PMOS tube P16 grid potentials are equal to the second low level signal input terminal VHL2 Current potential, the 16th PMOS tube P16 conducting, the 17th PMOS tube P17 grid potentials are equal to the second high level signal input terminal The current potential of VGH2, the 17th PMOS tube P17 cut-off, select the signal of the driving signal output end TOUT outputs of output unit for etc. It is high level signal in the first fixed level signal.It is low level in first switch signal, second switch signal is high level When, the 12nd PMOS tube P12 and the 15th PMOS tube P15 conductings, the 13rd PMOS tube P13 and the 14th PMOS tube P14 end, 16th PMOS tube P16 grid potentials are equal to the current potential of the second high level signal input terminal VGH2, and the 16th PMOS tube P16 is cut Only, the 17th PMOS tube P17 grid potentials are equal to the current potential of the second low level signal input terminal VGL2, the 17th PMOS tube P17 Conducting selects the signal of the driving signal output end TOUT outputs of output unit to be low electricity equal to the second fixed level signal Ordinary mail number.I.e. when the first touch-control control signal CTX1 is high level, and the second touch-control control signal CTX2 is low level, select defeated The signal for going out the driving signal output end TOUT outputs of unit is consistent with the first fixed level signal.

When touch control electrode is multiplexed with public electrode, t21, which is corresponded to, shows that sweep phase, t22 correspond to touch-control sweep phase. The t21 stages can make the level letter of first switch signal input part TXHSW and second switch signal input part TXLSW input stabilizations Number, first switch signal input part TXHSW and second switch signal input part TXLSW do not input the pulse signal that touch-control scans; In the t22 stages, signal CTX1 is controlled in first control signal input terminal the first touch-controls of IN1, in second control signal input terminal IN2 Apply the second touch-control control signal CTX2 and in first switch signal input part TXHSW and second switch signal input part TXLSW Input the pulse signal of touch-control scanning.In touch-control sweep phase, first switch signal STXHSW and second switch signal STXLSW For pulse signal opposite each other.Certainly, independently use touch control electrode when, can t21+t22 all stage first Control signal input IN1 inputs the first touch-control and controls signal CTX1, and the second touch-control is inputted in second control signal input terminal IN2 Signal CTX2 is controlled, and in first switch signal input part TXHSW and the TXLSW input touch-control scannings of second switch signal input part Pulse signal.

It should be noted that the first fixed level signal STXH is fixed level, the touch-control letter of selection output unit is determined The high level size of number output end TOUT outputs;Second fixed level signal STXL is fixed level, and the arteries and veins of the high level It is wide identical with the high pulse width of pulse signal of first switch signal input part TXHSW inputs, determine selection output unit The low level size of touching signals output end TOUT outputs, and the low level pulsewidth and second switch signal input part The low-level pulse width of the pulse signal of TXLSW inputs is identical.

The touch drive circuit being made of scanning element and selection output unit in the present embodiment, scanning element and selection Output unit is made of PMOS tube, compared with the prior art the middle touch drive circuit using COMS, touch-control provided in this embodiment Driving circuit structure is simple, the negligible amounts of the metal-oxide-semiconductor used, the narrow frame of touch control display apparatus easy to implement.In this implementation In example, referring to Fig. 4 a, Fig. 4 a are the structural schematic diagram of the 4th kind of touch drive circuit provided in an embodiment of the present invention, touch-control driving Circuit further includes the first clock cable TX1, second clock signal wire TX2 and third clock cable TX3;

First clock signal input terminal of 3N+1 grades of scanning elements is electrically connected with the first clock cable TX1, and described The second clock signal input part of 3N+1 grades of scanning elements is electrically connected with second clock signal wire TX2, the 3N+1 grades of scanning The third clock signal input terminal of unit is electrically connected with third clock cable TX3;

First clock signal input terminal of 3N+2 grades of scanning elements is electrically connected with second clock signal wire TX2,3N+2 The second clock signal input part of grade scanning element is electrically connected with third clock cable TX3, and the of 3N+2 grades of scanning elements Three clock signal input terminals are electrically connected with the first clock cable TX1;

First clock signal input terminal of 3N+3 grades of scanning elements is electrically connected with third clock cable TX3,3N+3 The second clock signal input part of grade scanning element is electrically connected with the first clock cable TX1, and the of 3N+3 grades of scanning elements Three clock signal input terminals are electrically connected with second clock signal wire TX2;

Wherein, N is the integer more than or equal to zero.

Referring to Fig. 4 b, Fig. 4 b are first order scanning element in Fig. 4 a, second level scanning element and third level scanning element A kind of sequence diagram of the input signal of each input terminal and the output signal of output end.STV is the trigger signal on line trigger signal, SCLK1 is the first clock signal on the first clock cable, and SCLK2 is the second clock signal on second clock signal wire, SCLK3 is the third clock signal on third clock cable, and OUT13 is first order scanning element secondary trigger signal output end The signal of output, OUT23 are the signal of second level scanning element secondary trigger signal output end output, and OUT33 sweeps for the third level The signal of unit secondary trigger signal output end output is retouched, OUT11 is the first control signal output end of first order scanning element Defeated signal, OUT12 are the defeated signal of first order scanning element second control signal output end, and OUT21 is that second level scanning is single The signal of first first control signal output end output, OUT22 are the output of second level scanning element second control signal output end Signal, OUT31 are the signal of third level scanning element first control signal output end output, and OUT32 is third level scanning element Second control signal output end output signal.The operation principle of scanning element specifically refers to retouching for Fig. 2 b and Fig. 2 c It states, by the connection relation of circuit in Fig. 4 a, higher level's scanning element provides control signal to this grade selection output unit, with control This grade selects output unit to generate touch-control drive signal in the touch-control period and is exported to corresponding touch control electrode, and is showing Period generates public voltage signal and is exported to corresponding touch control electrode.And provide secondary trigger signal for subordinate's scanning element Subordinate's scanning element work has been triggered, the scanning step by step to touch control electrode may be implemented, realize touch control detection.

In the present embodiment, each of touch drive circuit selection output unit can be correspondingly arranged a scanning element, Also one scanning element corresponding with selection output unit, i can be set at interval of i scanning element in cascade scanning element For positive integer.Illustratively, it is the structural representation of the 5th kind of touch drive circuit provided in an embodiment of the present invention referring to Fig. 5, Fig. 5 A scanning element corresponding with output unit is selected is arranged at interval of 1 scanning element in cascade scanning element in figure, i.e., and the 1 grade, 3rd level ..., 2n+1 grades of scanning elements be correspondingly arranged selection output unit, and the 2nd grade, the 4th grade ..., 2n grades Scanning element is not provided with selection output unit, and n is integer.By changing the value of i, different selection output unit outputs can be controlled Touch-control drive signal between interval time.

Referring to Fig. 6 a, the embodiment of the present invention also provides a kind of array substrate, which includes 21 He of display area Peripheral region 22 around the display area, peripheral region 22 are provided with above-mentioned touch drive circuit 10, touch-control driving electricity Road includes cascade multiple scanning elements 11 and selection output unit 12 corresponding with scanning element, the viewing area, 21 settings There are touch control electrode 24, the drive signal of the selection output unit 12 corresponding with touch drive circuit 10 of the touch control electrode 24 defeated Outlet is electrically connected.

Further, 24 reusable of the touch control electrode is public electrode.

Referring to Fig. 6 b, in an embodiment of the present embodiment, array substrate 20 is including display area 21 and surrounds institute The peripheral region 22 of display area is stated, peripheral region 22 is provided with above-mentioned touch drive circuit 10, and touch drive circuit includes Cascade multiple scanning elements 11 and selection output unit 12 corresponding with scanning element, the display area 21 is provided with touch-control Electrode 24, the driving signal output end electricity of the selection output unit 12 corresponding with touch drive circuit 10 of the touch control electrode 24 Connection.The touch drive circuit 10 is arranged in opposite the first side 221 and the second side 222 of the display area, wherein position In the touch drive circuit 10 of the first side of the display area 221 for driving odd number touch control electrode, it is located at the display The touch drive circuit 10 of area second side is for driving even number touch control electrode.Touch drive circuit is set to array The both sides in substrate peripheral region, the touch drive circuit cabling that can solve the setting of touch display circuit side is excessive, is formed and is touched Control the more difficult problem of driving circuit.

Referring to Fig. 6 c, in the another embodiment of the present embodiment, array substrate 20 includes display area 21 and surrounds The peripheral region 22 of display area, peripheral region 22 are provided with above-mentioned touch drive circuit 10, and touch drive circuit includes grade Multiple scanning elements 11 of connection and selection output unit 12 corresponding with scanning element, display area 21 is provided with touch control electrode 24, the driving signal output end electrical connection of the selection output unit 12 corresponding with touch drive circuit 10 of touch control electrode 24.It touches Control driving circuit 10 is arranged in opposite the first side 221 and the second side 222 of the display area, and each touch control electrode 14 is simultaneously It is driven by the touch drive circuit 10 of opposite the first side and the second side of display area 21.Each touch control electrode is simultaneously by showing The touch drive circuit of opposite first side and the second side in region drives, and can enhance the touch-control being applied in touch control electrode and drive Dynamic signal solves the problems, such as unilateral driving drive signal decaying, improves driving capability.

Referring to Fig. 7, the embodiment of the invention also discloses a kind of touch control display apparatus, including the array in the various embodiments described above The color membrane substrates 30 that substrate 20 and array substrate 20 are oppositely arranged and the liquid crystal layer between array substrate and color 30 plate of film base 40.Wherein, the liquid crystal layer 40 includes multiple liquid crystal molecules 401.

Note that 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 present invention is not limited to specific embodiments described here, can carry out for a person skilled in the art it is various it is apparent variation, It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out to the present invention by above example It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also May include other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.

Claims (12)

1. a kind of touch drive circuit, which is characterized in that including cascade multiple scanning elements and multiple selection output units, often A selection output unit is correspondingly arranged with a scanning element, and each selection output unit corresponds to a touch-control electricity Pole;
The control signal output of the scanning element is electrically connected with the control terminal of the selection output unit, the scanning element Touch-control is exported to the selection output unit by the control signal output and control signal, so that the selection output unit Signal is controlled according to the touch-control and exports touch-control drive signal to corresponding touch control electrode in the touch-control period, and in display Between section to corresponding touch control electrode outputting common voltage signal, cascade multiple scanning elements and the multiple selection output Unit is all made of PMOS tube and is made;
The scanning element includes first control signal output end and second control signal output end;
The selection output unit includes first control signal input terminal, second control signal input terminal and drive signal output End;The first control signal output end is electrically connected with the first control signal input terminal, the second control signal output End is electrically connected with the second control signal input terminal, and the driving signal output end is corresponding with the selection output unit to be touched Control electrode electrical connection.
2. touch drive circuit according to claim 1, which is characterized in that the scanning element includes trigger signal input End, the first clock signal input terminal, second clock signal input part, third clock signal input terminal, secondary trigger signal output End;Wherein, the trigger signal input terminal of first order scanning element is electrically connected with line trigger signal, other grades scan in addition to the first order The trigger signal input terminal of unit is electrically connected with the secondary trigger signal output end of upper level scanning element;
The scanning element is used for according to first clock signal input terminal, the second clock signal input part and described the The clock signal of three clock signal input terminals input and the trigger signal of trigger signal input terminal input generate first and touch Control control signal, and generate the second touch-control and control signal, the first touch-control control signal is believed with second touch-control control Number each other reverse signal;
The selection output unit is used to control signal according to the first touch-control inputted from the first control signal input terminal, with And the second touch-control inputted from the second control signal input terminal controls signal, in the touch-control period to corresponding touch control electrode Touch-control drive signal is exported, and is showing the period to corresponding touch control electrode outputting common voltage signal.
3. touch drive circuit according to claim 2, which is characterized in that the selection output unit further includes for defeated Enter the first switch signal input part of first switch signal, the second switch signal input part for inputting second switch signal, The first fixed level signal input part for inputting the first fixed level signal, and for inputting the second fixed level signal The second fixed level signal input part;
Wherein, the first switch signal and the second switch signal reverse signal each other;
The selection output unit controls signal according to first touch-control, second touch-control controls signal, described first opens OFF signal, the second switch signal, the first fixed level signal and the second fixed level signal are in the touch-control time Duan Shengcheng touch-controls drive signal simultaneously to corresponding touch control electrode export, and display the period generate public voltage signal and to Corresponding touch control electrode output.
4. touch drive circuit according to claim 3, which is characterized in that the scanning element include the first PMOS tube, Second PMOS tube, third PMOS tube, the 4th PMOS tube, the 5th PMOS tube, the 6th PMOS tube, the 7th PMOS tube, the first capacitance, Two capacitances, the first high level signal input terminal and the first low level signal input terminal;
The grid of first PMOS tube is electrically connected with first node, and first end is electrically connected with second node, second end with it is described First high level signal input terminal is electrically connected;
The grid of second PMOS tube is electrically connected with the second clock signal input part, first end and second node electricity Connection, second end are electrically connected with the trigger signal input terminal;
The grid of the third PMOS tube is electrically connected with first clock signal input terminal, first end and second node electricity Connection, second end are electrically connected with the first low level signal input terminal;
The grid of 4th PMOS tube is electrically connected with the second node, and first end is electrically connected with the first node, and second End is electrically connected with the first high level signal input terminal;
The grid of 5th PMOS tube is electrically connected with the first node, first end and the secondary trigger signal output end electricity Connection, second end are electrically connected with the first high level signal input terminal;
The grid of 6th PMOS tube is electrically connected with the first end of the 7th PMOS tube, and first end is believed with the secondary triggering The electrical connection of number output end, second end are electrically connected with the third clock signal input terminal;
The grid of 7th PMOS tube is electrically connected with the first low level signal input terminal, first end and the 6th PMOS The grid of pipe is electrically connected, and second end is electrically connected with the second node;
The first end of first capacitance is electrically connected with the first end of the 6th PMOS tube, second end and the 7th PMOS tube First end electrical connection;
The first end of second capacitance is electrically connected with the first node, second end and the first high level signal input terminal Electrical connection;
The first node is electrically connected with the first control signal output end, the second node and the second control signal Output end is electrically connected.
5. touch drive circuit according to claim 3, which is characterized in that the selection output unit includes the 8th PMOS Pipe, the 9th PMOS tube, the tenth PMOS tube, the 11st PMOS tube, the 12nd PMOS tube, the 13rd PMOS tube, the 14th PMOS tube, 15th PMOS tube, the 16th PMOS tube, the 17th PMOS tube, the second high level signal input terminal and the second low level signal are defeated Enter end;
The grid of 8th PMOS tube is electrically connected with the second control signal input terminal, first end and the 9th PMOS tube First end electrical connection, second end is electrically connected with the first switch signal input part;
The grid of 9th PMOS tube is electrically connected with the first control signal input terminal, first end and the 8th PMOS tube First end electrical connection, second end is electrically connected with the second low level signal input terminal;
The grid of tenth PMOS tube is electrically connected with the second control signal input terminal, first end and the 11st PMOS The first end of pipe is electrically connected, and second end is electrically connected with the second switch signal input part;
The grid of 11st PMOS tube is electrically connected with the first control signal input terminal, first end and the tenth PMOS The first end of pipe is electrically connected, and second end is electrically connected with the second high level signal input terminal;
The grid of 12nd PMOS tube is electrically connected with the first end of the 8th PMOS tube, first end and the described 13rd The first end of PMOS tube is electrically connected, and second end is electrically connected with the second high level signal input terminal;
The grid of 13rd PMOS tube is electrically connected with the first end of the tenth PMOS tube, first end and the described 12nd The first end of PMOS tube is electrically connected, and second end is electrically connected with the second low level signal input terminal;
The grid of 14th PMOS tube is electrically connected with the first end of the tenth PMOS tube, first end and the described 15th The first end of PMOS tube is electrically connected, and second end is electrically connected with the second high level signal input terminal;
The grid of 15th PMOS tube is electrically connected with the first end of the 8th PMOS tube, first end and the described 14th The first end of PMOS tube is electrically connected, and second end is electrically connected with the second low level signal input terminal;
The grid of 16th PMOS tube is electrically connected with the first end of the 12nd PMOS tube, first end and the described 17th The first end of PMOS tube is electrically connected, and second end is electrically connected with the first fixed level signal input part;
The grid of 17th PMOS tube is electrically connected with the first end of the 14th PMOS tube, first end and the described 16th The first end of PMOS tube is electrically connected, and second end is electrically connected with the second fixed level signal input part.
6. touch drive circuit according to claim 2, which is characterized in that when further including the first clock cable, second Clock signal wire and third clock cable;
First clock signal input terminal of 3N+1 grades of scanning elements is electrically connected with the first clock cable, and described 3N+1 grades are swept The second clock signal input part for retouching unit is electrically connected with second clock signal wire, when the third of the 3N+1 grades of scanning elements Clock signal input part is electrically connected with third clock cable;
First clock signal input terminal of 3N+2 grades of scanning elements is electrically connected with second clock signal wire, and 3N+2 grades of scannings are single The second clock signal input part of member is electrically connected with third clock cable, and the third clock signal of 3N+2 grades of scanning elements is defeated Enter end to be electrically connected with the first clock cable;
First clock signal input terminal of 3N+3 grades of scanning elements is electrically connected with third clock cable, and 3N+3 grades of scannings are single The second clock signal input part of member is electrically connected with the first clock cable, and the third clock signal of 3N+3 grades of scanning elements is defeated Enter end to be electrically connected with second clock signal wire;
Wherein, N is the integer more than or equal to zero.
7. touch drive circuit according to claim 1, which is characterized in that every in cascade multiple scanning elements One scanning element corresponding with selection output unit is set every i scanning element, i is positive integer.
8. a kind of array substrate, including display area and the peripheral region around the display area, which is characterized in that described outer Region to be enclosed to be arranged just like claim 1-7 any one of them touch drive circuits, the display area is provided with touch control electrode, The driving signal output end electrical connection of touch control electrode selection output unit corresponding with touch drive circuit.
9. array substrate according to claim 8, which is characterized in that the touch control electrode is multiplexed with public electrode.
10. array substrate according to claim 8, which is characterized in that the touch drive circuit is arranged in the display Opposite first side and the second side in region, wherein positioned at the first side of the display area touch drive circuit for driving the Odd number touch control electrode is located at the touch drive circuit of the display area the second side for driving even number touch control electrode.
11. array substrate according to claim 8, which is characterized in that the touch drive circuit is arranged in the display Opposite first side and the second side in region, each touch control electrode is simultaneously by opposite the first side and second of the display area The touch drive circuit of side drives.
12. a kind of touch control display apparatus, which is characterized in that including any array substrates of claim 8-11, with it is described The color membrane substrates that array substrate is oppositely arranged and the liquid crystal layer between the array substrate and the color membrane substrates.
CN201610310454.8A 2016-05-11 2016-05-11 A kind of touch drive circuit, array substrate and touch control display apparatus CN106020534B (en)

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CN106782290B (en) * 2016-12-28 2020-05-05 广东聚华印刷显示技术有限公司 Array substrate, display panel and display device
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