CN104615291B - Show the composite flooding circuit of contact panel - Google Patents
Show the composite flooding circuit of contact panel Download PDFInfo
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- CN104615291B CN104615291B CN201310542194.3A CN201310542194A CN104615291B CN 104615291 B CN104615291 B CN 104615291B CN 201310542194 A CN201310542194 A CN 201310542194A CN 104615291 B CN104615291 B CN 104615291B
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Abstract
The present invention is a kind of composite flooding circuit for showing contact panel, and it is used to drive the common electrode for showing contact panel, and composite flooding circuit includes a signal generating circuit, one scan control circuit and display touch-control circuit.Signal generating circuit exports a display signal and a driving clock pulse；Scan control circuit output one scan signal, one first start signal and one second start signal, scanning signal scan multiple pixels of the display contact panel；And display touch-control circuit coupling scan control circuit, signal generating circuit and common electrode, and according to the first start signal output display signal to common electrode, or according to the second start signal and the driving signal of clock pulse output one is driven to common electrode.
Description
Technical field
The present invention is a kind of relevant drive circuit, especially with regard to a kind of composite flooding electricity for being used to show contact panel
Road, it reduces the quantity of drive circuit to reduce manufacturing cost, and can reduce the thickness of display contact panel.
Background technology
Largely popularized recently as touch-control running gear, touch technology also follows quick evolution, breeds for many years new
Touch-control Display Technique includes monolithic glass substrate (One Glass), single-layer electrodes (Indiumtin oxide, ITO) multiple spot, embedding
Enter formula (On cell or in cell) etc..However, tradition shows that display driver circuit and touch-control are generally had on contact panel to be driven
The circuits such as dynamic circuit, moreover, display driving signal is to show and touch-control driving signal is to touch-control, so both differences
It is very big, therefore the two signals are typically to be driven respectively by two chips IC.Therefore, if display driver circuit and touch-control can be driven
It is dynamic it is circuit integrated together, the cost of product will certainly be greatly reduced.
Furthermore general display contact panel is external hanging type, wherein detecting electrode Rx touches signal, driving electricity for detecting is outside
Pole Tx is scanning signal, and walking for touch-control circuit is laid out on the upside of extra glass on panel (TP Glass) moreover, generally requiring
Line, and need externally connected touch-control integrated circuit (touch IC).In addition, also need one layer of protective glass above TP Glass
(cover glass), so, if touch drive circuit and display driver circuit can be together integrated into transistor array substrate
On, moreover, detecting electrode Rx and driving electrodes Tx is integrated into colored filter substrate (color filter glass, CF
Glass), and by driving signal it is integrated into display integrated circuit (display integrated circuit, displayIC)
On, then the cost of integrated circuit and complicated circuit layout can be reduced, and reduce the overall thickness for showing contact panel.
In view of the problem of known display contact panel, the present invention proposes a kind of composite flooding circuit for showing contact panel,
It is used to reduce the quantity of drive circuit to reduce manufacturing cost, and can reduce the thickness of display contact panel.
The content of the invention
One of main object of the present invention, it is to provide a kind of composite flooding circuit for being used to show contact panel, it is used
In reduce drive circuit quantity to reduce manufacturing cost, and can reduce display contact panel thickness.
In order to reach above-mentioned censured purpose and effect, the present invention discloses a kind of composite flooding electricity for showing contact panel
Road, it is used to drive the common electrode for showing contact panel, and composite flooding circuit includes a signal generating circuit, one scan control
Circuit processed and display touch-control circuit.Signal generating circuit exports a display signal and a driving clock pulse；Scan control circuit exports
One scan signal, one first start signal and one second start signal, scanning signal scan multiple pictures of the display contact panel
Element；And display touch-control circuit coupling scan control circuit, signal generating circuit and common electrode, and it is defeated according to the first start signal
Go out display signal to common electrode, or signal is driven to common electrode according to the second start signal and driving clock pulse output one.
Brief description of the drawings
Fig. 1：It is the block diagram of an embodiment of the display contact panel of the present invention；
Fig. 2：It is the circuit diagram of an embodiment of the display touch-control circuit of the present invention；
Fig. 3：It is the timing diagram of an embodiment of the display touch-control circuit of the present invention；
Fig. 4：It is the circuit diagram of another embodiment of the display touch-control circuit of the present invention；
Fig. 5：It is the timing diagram of another embodiment of the display touch-control circuit of the present invention；And
Fig. 6：It is the block diagram of the another embodiment of the display touch-control circuit of the present invention.
【Figure number is to as directed】
1 display contact panel 10 shows touch area
The scan control circuit of 20 composite flooding circuit 30
The 40 display signal generating circuits of touch-control circuit 50
The input circuit of 60 common circuit 620 first
The output circuit of 622 second input circuit 64
The booster circuit of 660 first booster circuit 662 second
The mu balanced circuit of 68 discharge circuit 69
The input circuit of 70 touch-control circuit 72
The booster circuit of 74 output circuit 76
The touch-control circuit of 78 discharge circuit 80
The touch-control circuit of 81 touch-control circuit 82
A node C nodes
C1 node C2 nodes
CAP1Bootstrap capacitor CAP2Bootstrap capacitor
The transistor of F node Ms 1
M2 transistor M3 transistors
M4 transistor M5 transistors
M6 transistor M7 transistors
OUT output end T1 first periods
Between T2 third phases second phase T3
Between the T4 fourth phases between the T5 fifth phases
During the 6th period T7 of T6 the 7th
During the 8th period T9 of T8 the 9th
VCOMDisplay signal VDDVoltage
VDRIDrive clock pulse VDRI1Drive signal
VG2Control signal VG4Control signal
VG6Control signal VG8Control signal
VON1Turn on signal VON2Turn on signal
VR1-1First boosting signal VR1-2Second boosting signal
VR2Boost signal VREGVoltage stabilizing signal
VSCANScan signal VSSVoltage
VST1First start signal VST2Second start signal
Embodiment
In order that the present invention architectural feature and it is reached the effect of have a better understanding and awareness, spy with preferably
Embodiment and cooperation detailed description, are described as follows：
Referring to Fig. 1, Fig. 1 is the block diagram of an embodiment of the display contact panel of the present invention.It is as illustrated, of the invention
For a kind of composite flooding circuit 20 for showing contact panel, it is used to drive the common electrode for showing contact panel 1 (in figure
Do not show), this common electrode corresponds to another lateral electrode of the liquid crystal layer of display panel for driving liquid crystal layer, or can be as tactile
The sensing electrode of panel is controlled to detect the touch-control behavior of user, in this way, the present invention can reduce the sense of setting one in contact panel
Electrode layer is surveyed to reduce the thickness of display contact panel 1.Furthermore composite flooding circuit 20 of the invention produces comprising a signal
Circuit 50, one scan control circuit 30 and one show touch-control circuit 40.Signal generating circuit 50 exports a display signal VCOMAnd one
Drive clock pulse VDRI；Scan control circuit 30 exports one scan signal VSCAN, one first start signal VST1And one second starting news
Number VST2, scanning signal VSCANScanning shows multiple pixels of contact panel 1；And display touch-control circuit 40 couples scan control electricity
Road 30, signal generating circuit 50 and common electrode, and according to the first start signal VST1Output display signal VCOMTo common electrode,
Or according to the second start signal VST2And driving clock pulse VDRIThe driving signal of output one VDRI1To common electrode.
Furthermore scan control circuit 30 of the invention is according to scanning signal VSCANExport the first start signal VST1Or this
Two start signal VST2To display touch-control circuit 40, so, display touch-control circuit 40 is more according to scanning signal VSCANOutput display is interrogated
Number VCOMOr driving signal VDRI1To common electrode.In this way, as scanning signal VSCANScanning shows those pixels of touch area 10
When, show the output display signal V of touch-control circuit 40CONTo common electrode, as scanning signal VSCANDisplay touch area 10 is not scanned
Those pixels when, show touch-control circuit 40 output driving signal VDRI1To common electrode.Therefore, show that touch-control circuit 40 can be with
The scanning signal V exported by scan control circuit 30SCANSignal synchronization is carried out, and the touch-control that staggers scans and display picture
Time, with avoid detect touch event when, by the noise jamming of display picture.In addition, the present invention is by display signal VCOMWith
Drive signal VDRI1Display touch-control circuit 40 is integrated into, and the quantity of drive circuit can be reduced, and because being not necessary to extra setting one
Touch-control circuit on touch-control glass substrate, so, display contact panel 1 of the invention can effectively reduce thickness.
In addition, the control signal V shown in Fig. 1G2、VG4As scan control circuits 30 are controlled with what and show touch-control circuit 40, please
Refering to following explanation.
Referring to Fig. 2, its circuit diagram for an embodiment of the display touch-control circuit of the present invention.As illustrated, display is touched
Control circuit 40 includes a common circuit 60 and a touch-control circuit 70.Common circuit 60 couples scan control circuit 30, signal produces
Circuit 50 and common electrode, and according to the first start signal VST1Output display signal VCOMTo common electrode.The coupling of touch-control circuit 70
Scan control circuit 30, signal generating circuit 50, common circuit 60 and common electrode are connect, and according to the second start signal VST2And
Drive clock pulse VDR1Output driving signal VDRI1To common electrode.
Fig. 2 is referred to again, and common circuit 60 includes one first input circuit 620, a bootstrap capacitor CAP1, an output circuit 64
And one first booster circuit 660.Wherein, display touch-control circuit 40 of the invention is by N type metal oxide semiconductor field effect crystal
(Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET) composition is managed, so, the present invention is also
P-type MOSFET designs can be utilized to show touch-control circuit 40, so, the present invention does not limit the circuit frame for showing touch-control circuit 40
Structure.The first input circuit 620 coupling scan control circuit 30 and one voltage V of the present inventionDD, scan control circuit 30 is with the first
Beginning signal VST1The on or off of the first input circuit 620 is controlled, in this way, when scan control circuit 30 controls the first input circuit
During 620 conducting, the first input circuit 620 is according to voltage VDDProduce a conducting signal VON1.In other words, the coupling of the first input circuit 620
Scan control circuit 30 is connect, and scan control circuit 30 controls the first input circuit 620 to produce conducting signal VON1.In addition, scanning
Control circuit 30 is more with the first start signal VST1Controlling transistor M1 on or off, in this way, scan control circuit 30 is with
One start signal VST1The first input circuit 620 and transistor M1 on or off are controlled simultaneously, so that bootstrap capacitor CAP1Can be with
Storage conducting signal VON1。
The bootstrap capacitor CAP of the present invention1Couple the first input circuit 620 and store conducting signal VON1.Although in addition, originally
Invent for storing conducting signal VON1Capacitor be referred to as bootstrap capacitor, still, this capacitor title is intended to indicate that itself
With the effect of, store conducting signal V not for limitingON1Capacitor specification, so, the present invention made with bootstrap capacitor
Title for capacitor is only an embodiment.The first booster circuit 660 coupling scan control circuit 30 of the present invention, and receive and sweep
Retouch a control signal V of the output of control circuit 30G2, in this way, the first booster circuit 660 is according to control signal VG2Produce one first
Boost signal VR1-1.In other words, the first booster circuit 660 coupling scan control circuit 30, the control of scan control circuit 30 first
The boosting signal V of the output of booster circuit 660 one firstR1-1.Now, bootstrap capacitor CAP1More couple the first booster circuit 660 and connect
Receive the first boosting signal VR1-1, to lift node C voltage quasi position.
The output circuit 64 of the present invention couples bootstrap capacitor CAP1, signal generating circuit 50 and common electrode, and receive aobvious
Show signal VCOM, conducting signal VON1And the first boosting signal VR1-1, moreover, conducting signal VON1And the first boosting signal VR1-1For
The output display signal V of control output circuit 64COM.In this way, work as bootstrap capacitor CAP1Receive conducting signal VON1And first boosting news
Number VR1-1When, turn on signal VON1And the first boosting signal VR1-1Via the output display signal of transistor M2 control output circuits 64
VCOMTo common electrode.In other words, output circuit 64 couples bootstrap capacitor CAP1, signal generating circuit 50 and common electrode, and according to
According to conducting signal VON1And the first boosting signal VR1-1Output display signal VCOMTo common electrode.
Fig. 2 is referred to again, common circuit 60 of the invention further includes a discharge circuit 68, as the term suggests discharge circuit 68 is used for
Electric discharge work is performed, moreover, discharge circuit 68 is to be used for the bootstrap capacitor CAP that discharges1, so, the coupling bootstrapping electricity of discharge circuit 68
Hold CAP1And scan control circuit 30, and receive the second start signal VST2, in this way, scan control circuit 30 is interrogated with the second starting
Number VST2Control the on or off of discharge circuit 68.Therefore, when scan control circuit 30 controls discharge circuit 68 to turn on, put
The electric discharge bootstrap capacitor of circuit 68 CAP1Conducting signal VON1And the first boosting signal VR1-1.In other words, discharge circuit 68 couples
Bootstrap capacitor CAP1And scan control circuit 30, scan control circuit 30 control the electric discharge bootstrap capacitor of discharge circuit 68 CAP1.Therefore
By the electric discharge bootstrap capacitor of discharge circuit 68 CAP1Stored energy, output circuit 64 can be also changed into by conducting state to be cut
Only state, now, output circuit 64 will not output display signal VCOM.However, because scan control circuit 30 is more interrogated with the second starting
Number VST2Touch-control circuit 70 is controlled, so, when output circuit 64 will not output display signal V in output end OUTCOMWhen, touch-control electricity
Road 70 starts output driving signal V in output end OUTDRI1。
Fig. 2 is referred to again, and touch-control circuit 70 of the invention includes an input circuit 72, a bootstrap capacitor CAP2, one output electricity
The booster circuit 76 of road 74 and one.Input circuit 72 couples scan control circuit 30 and receives one second start signal VST2And voltage
VDD,Scan control circuit 30 is with the second start signal VST2The on or off of control input circuit 72, in this way, when scan control electricity
When the control input circuit 72 of road 30 turns on, input circuit 72 is according to voltage VDDProduce a conducting signal VON2.In other words, input electricity
Road 72 couples scan control circuit 30, and the control input circuit 72 of scan control circuit 30 produces conducting signal VON2.In addition, sweep
Control circuit 30 is retouched more with the second start signal VST2Controlling transistor M4 on or off, in this way, scan control circuit 30 is with
Two start signal VST2Control input circuit 72 and transistor M4 on or off simultaneously, so that bootstrap capacitor CAP2It can store
Turn on signal VON2。
The bootstrap capacitor CAP of the present invention2Input circuit 72 is coupled, and such as the bootstrap capacitor CAP of common circuit 601And use
In storage energy, i.e. bootstrap capacitor CAP2Storage conducting signal VON2.Furthermore the coupling scanning of booster circuit 76 of touch-control circuit 70
Control circuit 30, and receiving voltage VDDAnd the control signal V that scan control circuit 30 exportsG4, so, scan control circuit
30 to control signal VG4Control the on or off of booster circuit 76.In this way, when scan control circuit 30 controls booster circuit 76
During conducting, booster circuit 76 is according to voltage VDDProduce a boosting signal VR2.In other words, booster circuit 76 couples scan control electricity
Road 30, scan control circuit 30 control the output boosting signal of booster circuit 76 VR2.Now, bootstrap capacitor CAP2More coupling boosting electricity
Road 76 simultaneously receives boosting signal VR2, to lift node A voltage quasi position.
The output circuit 74 of the present invention couples bootstrap capacitor CAP2, signal generating circuit 50 and common electrode, and receive drive
Dynamic clock pulse VDRIAnd conducting signal VON2, moreover, conducting signal VON2For the output driving clock pulse V of control output circuit 74DRI.Such as
This, as bootstrap capacitor CAP2Storage conducting signal VON2When, turn on signal VON2Turned on via transistor M5 control output circuits 74,
With output driving clock pulse VDRITo common electrode.In addition, bootstrap capacitor CAP2More receive boosting signal VR2, i.e., output circuit 74 is more
Booster circuit 76 is coupled, and according to boosting signal VR2Output driving signal VDRI1, and the signal V that boostsR2It is to be used to lift output
To the driving signal V of common electrodeDRI1.Now, signal V is turned onON2And boosting signal VR2When control output circuit 74 is according to driving
Arteries and veins VDRIOutput driving signal VDRI1.In other words, output circuit 74 couples bootstrap capacitor CAP2, signal generating circuit 50 and share electricity
Pole, and according to conducting signal VON2And driving clock pulse VDRIOutput driving signal VDRI1To common electrode, and more couple booster circuit
76, with according to boosting signal VR2Lifting is exported to the driving signal V of common electrodeDRI1。
The touch-control circuit 70 of the present invention includes a discharge circuit 78, and the electric discharge of touch-control circuit 70 such as common circuit 60
The effect of the discharge circuit 68 for acting as common circuit 60 of circuit 78, so, discharge circuit 78 couples bootstrap capacitor CAP2
And scan control circuit 30, and receive the first start signal VST1, in this way, scan control circuit 30 is with the first start signal VST1Control
The electric discharge bootstrap capacitor of discharge circuit 78 CAP processed2Stored energy.In other words, discharge circuit 78 couples bootstrap capacitor CAP2And sweep
Control circuit 30 is retouched, scan control circuit 30 controls the electric discharge bootstrap capacitor of discharge circuit 78 CAP2.Similarly, when discharge circuit 78
Discharge bootstrap capacitor CAP2When, output circuit 74 will not output driving signal VDRI1.However, because scan control circuit 30 is more with
One start signal VST1Common circuit 60 is controlled, so, when output circuit 74 will not output driving signal V in output end OUTDRI1
When, common circuit 60 starts output display signal V in output end OUTCOM。
Also referring to the timing diagram of an embodiment of the display touch-control circuit that Fig. 2 and Fig. 3, Fig. 3 are the present invention.As schemed
Show, in first period T1, the first start signal VST1For high levle when, the first input circuit 620 and transistor M1 are conducting shape
State, moreover, the first input circuit 620 is according to voltage VDDProduce conducting signal VON1, now, bootstrap capacitor CAP1Storage conducting news
Number VON1, i.e. node C voltage quasi position is conducting signal VON1Voltage quasi position, and node C1 is that ground connection level is (as shown in Figure 2
Voltage VSSVoltage quasi position).As shown in figure 3, node C voltage quasi position is via conducting signal VON1Charging and be gradually increasing.Such as
This, conducting signal VON1Output circuit 64 is turned on via transistor M2, so, the output display signal V of output circuit 64COMExtremely share
Electrode.In second phase T2, control signal VG2For high levle and the first booster circuit 660 is turned on, so, the first booster circuit
660 produce the first boosting signal VR1-1, now, bootstrap capacitor CAP1According to conducting signal VON1And the first boosting signal VR1-1, make
Node C voltage quasi position is promoted to conducting signal VON1And the first boosting signal VR1-1The voltage quasi position (as shown in Figure 3) of sum,
In this way, the output display signal V that output circuit 64 is stableCOMTo common electrode.
Furthermore in first period T1 to T3 between the third phase, scanning signal VSCANScanning shows those pictures of touch area 10
Element, so, common circuit 60 is except first period T1 and second phase T2 output display signal VCOMOutside, T3 is total between the third phase
With the also synchronous scanning signal V of circuit 60SCANAnd continue output display signal VCOM.So, the T4 between the fourth phase, because scanning signal VSCAN
Those pixels of display touch area 10 are not scanned, so, scan control circuit 30 is with the second start signal V of high levleST2Control
Discharge circuit 68 processed, and the bootstrap capacitor CAP that discharges1The conducting signal V receivedON1And the first boosting signal VR1-1, i.e. node C's
Voltage quasi position is reduced to ground connection level, and makes the no longer output display signal V of common circuit 60COM。
Accept above-mentioned, the T4 between the fourth phase, the second start signal V of high levleST2More turn on the input of touch-control circuit 70
Circuit 72, so, the output conducting signal of input circuit 72 VON2To bootstrap capacitor CAP2, the node A voltage quasi position as shown in Fig. 3
It is gradually increasing to turn on signal VON2Voltage quasi position, thereafter, common circuit 60 is between the fourth phase during T4 discharge offs, touch-control electricity
The bootstrap capacitor CAP on road 702T5 turns on output circuit 74 between the fifth phase, and output circuit 74 is according to driving clock pulse VDRIOutput is driven
Dynamic signal VDRI1To common electrode.Furthermore in the 6th period T6, control signal VG4For high levle and booster circuit 76 is controlled, such as
This, booster circuit 76 is according to voltage VDDOutput boosting signal VR2, now, bootstrap capacitor CAP2According to conducting signal VON2And boosting
Signal VR2, and node A voltage quasi position is also promoted to conducting signal VON2And boosting signal VR2The voltage quasi position of sum is (as schemed
Shown in 3), therefore, booster circuit 76 lifts output circuit 74 and exported to the driving signal V of common electrodeDRI1(such as Fig. 3 the 6th phase
Between shown in T6).So, the T5 to the 7th period T7 between the fifth phase, because scanning signal VSCANThose pixels are not scanned, so, touch-control
The T5 to the 7th period T7 output driving signal V between the fifth phase of circuit 70DRI1.In this way, driving signal VDRI1With display signal
VCON, scanning signal VSCANSynchronously without interfering.
In the 8th period T8, the first start signal V of high levleST1Control the electric discharge bootstrap capacitor of discharge circuit 78 CAP2, and
The input circuit 620 of common circuit 60 is turned on, so, node A voltage quasi position is reduced to ground connection level, and node C voltage
Level is gradually promoted to conducting signal VON1Voltage quasi position.Then the 9th period T9, scanning signal VSCANStart to scan those pictures
Element, moreover, the stable output display signal V of common circuit 60COM.In other words, the no longer output driving signal V of touch-control circuit 70DRI1,
And change by the output display signal V of common circuit 60COM, remaining follow-up working condition as previously described, no longer covers in this and states.This
Outside, when display touch-control circuit 40, which changes, to be designed by p-type MOSFET, the signal reference position that scan control circuit 30 is exported must also become
More, and remaining work to it is foregoing similar, so being no longer described in detail.
Referring to Fig. 4, its circuit diagram for another embodiment of the display touch-control circuit of the present invention.Fig. 4 and Fig. 2 difference
One second input circuit 622, one second booster circuit 662 and a mu balanced circuit 69 are further included for Fig. 4 common circuit 60.The
Two input circuits 622 couple scan control circuit 30, and scan control circuit 30 controls the second input circuit 622 to produce the conducting
Signal VON1.Second booster circuit 662 couples scan control circuit 30, and scan control circuit 30 controls the second booster circuit 662 defeated
Go out one second boosting signal VR1-2.In addition, the operation principle of the second input circuit 622 and the second booster circuit 662 is such as first
The booster circuit 660 of input circuit 620 and first, so, the above only sketches its technology contents.
Above-mentioned, mu balanced circuit 69 is accepted, as the term suggests mu balanced circuit 69 is used to stablize common circuit 60, especially makes to share
The stable output display signal V of circuit 60COM.So mu balanced circuit 69 couples discharge circuit 68 and bootstrap capacitor CAP1, and receive
Voltage VDDAnd bootstrap capacitor CAP1Stored energy, moreover, bootstrap capacitor CAP1Stored energy is used to control voltage stabilizing electric
Road 69 exports a voltage stabilizing signal VREGTo discharge circuit 68.In this way, work as bootstrap capacitor CAP1Receive conducting signal VON1And first liter
Press signal VR1-1When, it makes mu balanced circuit 69 according to voltage VDDExport voltage stabilizing signal VREGTo discharge circuit 68, i.e. voltage stabilizing signal
VREGNode F voltage quasi position is lifted, so that the stable output display signal V of common circuit 60COM.In other words, the coupling of mu balanced circuit 69
Discharge circuit 68 is connect, and exports voltage stabilizing signal VREGTo discharge circuit 68, to maintain display signal VCOM, refer in particular to remain aobvious
Show signal VCOMVoltage quasi position.
In addition, the present invention is to make the stable output display signal V of common circuit 60COM, discharge circuit 68 is increased into by a transistor
M7, transistor M7 coupling transistors M6 and mu balanced circuit 69, moreover, transistor M7 is same with transistor M6 to be interrogated by the second starting
Number VST2Control.Furthermore Fig. 4 common circuit 60 more increases by a transistor M3 to coordinate the second input circuit 622, make bootstrapping electric
Hold CAP1Store energy.
Referring to Fig. 5, its timing diagram for another embodiment of the display touch-control circuit of the present invention.As illustrated, Fig. 5 increases
Add the work schedule of the second input circuit 622 of control and the second booster circuit 662, i.e. increase control signal VG6And control signal
VG8Sequential, so, because its operation principle is to foregoing similar, so, no longer cover and state in this.
Referring to Fig. 6, its block diagram for the another embodiment of the display touch-control circuit of the present invention.As illustrated, this hair
Touch-control circuit 70 can be designed as multiple touch-control circuits 80~82 by bright display touch-control circuit 40, in this way, each touch-control of summation
The driving signal V that circuit 80,81,82 exportsDRI1The driving force of contact panel can be lifted, and before its operation principle refer to
State bright to be suitably modified.
In summary, the present invention discloses a kind of composite flooding circuit for showing contact panel, and it, which is used to drive, shows touch-control
One common electrode of panel, composite flooding circuit include a signal generating circuit, one scan control circuit and display touch-control circuit.
Signal generating circuit exports a display signal and a driving clock pulse；Scan control circuit output one scan signal, one first starting
Signal and one second start signal, scanning signal scan multiple pixels of the display contact panel；And display touch-control circuit coupling
Scan control circuit, signal generating circuit and common electrode, and according to the first start signal output display signal to common electrode,
Or signal is driven to common electrode according to the second start signal and driving clock pulse output one.
Above is only presently preferred embodiments of the present invention, is not used for limiting the scope that the present invention is implemented, Fan Yibenfa
The equivalent changes and modifications carried out by shape, construction, feature and spirit described in bright right, all should be included in the present invention
Right in.
Claims (9)
1. a kind of composite flooding circuit for showing contact panel, it is characterised in that it, which is used to drive, shows having altogether for contact panel
With electrode, the composite flooding circuit includes：
One signal generating circuit, export a display signal and a driving clock pulse；
One scan control circuit, output one scan signal, one first start signal and one second start signal, the scanning signal are swept
Retouch multiple pixels of the display contact panel；
One display touch-control circuit, couples the scan control circuit, the signal generating circuit and the common electrode, and according to this first
Start signal exports the display signal to the common electrode, or according to second start signal and the driving of driving clock pulse output one
Signal is to the common electrode；
Wherein the display touch-control circuit includes：
One common circuit, the scan control circuit, the signal generating circuit and the common electrode are coupled, and according to first starting
Signal exports the display signal to the common electrode；And
An at least touch-control circuit, the scan control circuit, the signal generating circuit, the common circuit and the common electrode are coupled,
And the driving signal is exported to the common electrode according to second start signal and the driving clock pulse.
2. the composite flooding circuit of display contact panel as claimed in claim 1, it is characterised in that wherein scan control electricity
Road exports first start signal or second start signal according to the scanning signal, and the display touch-control circuit is more swept according to this
Retouch signal and export the display signal or the driving signal, when the scanning signal scans those pixels, the display touch-control circuit is defeated
Go out the display signal, when the scanning signal does not scan those pixels, the display touch-control circuit exports the driving signal.
3. the composite flooding circuit of display contact panel as claimed in claim 1, it is characterised in that wherein display touch-control electricity
Road includes：
Multiple touch-control circuits, an output end of those touch-control circuits are mutually coupled, and according to second start signal and the driving
Clock pulse is to lift the driving signal.
4. the composite flooding circuit of display contact panel as claimed in claim 1, it is characterised in that the wherein common circuit bag
Contain：
One first input circuit, the scan control circuit is coupled, and the scan control circuit controls first input circuit to produce
One conducting signal；
One first booster circuit, couples the scan control circuit, and the scan control circuit controls first booster circuit to export one
First boosting signal；
One bootstrap capacitor, first input circuit and first booster circuit are coupled, and receive the conducting signal and this first liter
Press signal；And
One output circuit, the bootstrap capacitor, the signal generating circuit and the common electrode are coupled, and according to the conducting signal and be somebody's turn to do
First boosting signal exports the display signal to the common electrode.
5. the composite flooding circuit of display contact panel as claimed in claim 4, it is characterised in that wherein the common circuit is more
Comprising：
One second input circuit, the scan control circuit is coupled, and the scan control circuit controls second input circuit to produce
The conducting signal；And
One second booster circuit, couples the scan control circuit, and the scan control circuit controls second booster circuit to export one
Second boosting signal.
6. the composite flooding circuit of display contact panel as claimed in claim 4, it is characterised in that wherein the common circuit is more
Comprising：
One discharge circuit, couples the bootstrap capacitor and the scan control circuit, and the scan control circuit controls the discharge circuit to put
The electric bootstrap capacitor.
7. the composite flooding circuit of display contact panel as claimed in claim 6, it is characterised in that wherein the common circuit is more
Comprising：
One mu balanced circuit, the discharge circuit is coupled, and export a voltage stabilizing signal to the discharge circuit, to maintain the display signal.
8. the composite flooding circuit of display contact panel as claimed in claim 1, it is characterised in that the wherein touch-control circuit bag
Contain：
One input circuit, the scan control circuit is coupled, and a conducting signal is produced according to second start signal；
One booster circuit, the scan control circuit is coupled, the scan control circuit controls the boosting signal of booster circuit output one；
One bootstrap capacitor, the input circuit and the booster circuit are coupled, and receive the conducting signal and the boosting signal；And
One output circuit, the bootstrap capacitor, the signal generating circuit and the common electrode are coupled, and according to the conducting signal and be somebody's turn to do
Driving clock pulse exports the driving signal to the common electrode, and more couples the booster circuit, defeated to be lifted according to the boosting signal
Go out to the driving signal of the common electrode.
9. the composite flooding circuit of display contact panel as claimed in claim 8, it is characterised in that wherein the touch-control circuit is more
Comprising：
One discharge circuit, couples the bootstrap capacitor and the scan control circuit, and the scan control circuit controls the discharge circuit to put
The electric bootstrap capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310542194.3A CN104615291B (en) | 2013-11-04 | 2013-11-04 | Show the composite flooding circuit of contact panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310542194.3A CN104615291B (en) | 2013-11-04 | 2013-11-04 | Show the composite flooding circuit of contact panel |
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| TWI571846B (en) * | 2015-05-29 | 2017-02-21 | 凌巨科技股份有限公司 | A display touch panel with a composite circuit |
| CN106293179B (en) * | 2015-05-29 | 2023-09-29 | 凌巨科技股份有限公司 | Composite driving circuit for display touch panel |
| US9983748B2 (en) * | 2016-02-17 | 2018-05-29 | Atmel Corporation | Connecting electrodes to voltages |
| TWI674573B (en) * | 2017-07-17 | 2019-10-11 | 矽創電子股份有限公司 | Touch display driver circuit |
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| CN102955637A (en) * | 2012-11-02 | 2013-03-06 | 北京京东方光电科技有限公司 | Capacitance-type built-in touch screen, driving method thereof and display device |
| CN103164076A (en) * | 2011-12-09 | 2013-06-19 | 乐金显示有限公司 | Display device with integrated touch screen |
| CN103279245A (en) * | 2013-06-06 | 2013-09-04 | 敦泰科技有限公司 | Touch display device |
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| JP5628774B2 (en) * | 2011-11-07 | 2014-11-19 | 株式会社ジャパンディスプレイ | Display device with touch sensor, potential control method, and program |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103164076A (en) * | 2011-12-09 | 2013-06-19 | 乐金显示有限公司 | Display device with integrated touch screen |
| CN102955637A (en) * | 2012-11-02 | 2013-03-06 | 北京京东方光电科技有限公司 | Capacitance-type built-in touch screen, driving method thereof and display device |
| CN103279245A (en) * | 2013-06-06 | 2013-09-04 | 敦泰科技有限公司 | Touch display device |
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