CN104615291A - Composite driving circuit for display touch panel - Google Patents
Composite driving circuit for display touch panel Download PDFInfo
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- CN104615291A CN104615291A CN201310542194.3A CN201310542194A CN104615291A CN 104615291 A CN104615291 A CN 104615291A CN 201310542194 A CN201310542194 A CN 201310542194A CN 104615291 A CN104615291 A CN 104615291A
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Abstract
The invention discloses a composite driving circuit for a display touch panel. The composite driving circuit is used for driving a common electrode of the display touch panel. The composite driving circuit comprises a signal generating circuit, a scanning control circuit and a display touch circuit, wherein the signal generating circuit is used for outputting a display signal and a driving time pulse; the scanning control circuit is used for outputting a scanning signal, a first starting signal and a second starting signal; the scanning signal is used for scanning a plurality of pixels of the display touch panel; and the display touch circuit is coupled with the scanning control circuit, the signal generating circuit and the common electrode, and is used for outputting a display signal to the common electrode according to the first starting signal, or outputting a driving signal to the common electrode according to the second starting signal and the driving time pulse.
Description
Technical field
The present invention is relevant a kind of driving circuit, and particularly about a kind of composite flooding circuit for showing contact panel, its quantity reducing driving circuit to reduce manufacturing cost, and can reduce the thickness of display contact panel.
Background technology
In recent years along with touch-control running gear is popularized in a large number, touch technology is and then quick evolution also, the novel touch-control display technique bred for many years comprises monolithic glass substrate (One Glass), single-layer electrodes (Indiumtinoxide, ITO) multiple spot, embedded (On cell or in cell) etc.But; tradition display contact panel has the circuit such as display driver circuit and touch drive circuit usually, and display driver signal is that touch-control drives signal to be in order to touch-control in order to display; so both differences are very large, therefore these two signals are normally driven respectively by two chips IC.Therefore, if display driver circuit and touch drive circuit can be combined, the cost of product will certainly significantly be reduced.
Moreover, general display contact panel is external hanging type, wherein detect electrode Rx for touching signal in detecting outside, drive electrode Tx is scanning signal, and, the cabling of glass (TP Glass) the upside layout touch-control circuit that general needs are extra on panel, and need to be connected to outside touch-control integrated circuit (touch IC).In addition, one deck cover glass (cover glass) is also needed above TP Glass, so, if touch drive circuit and display driver circuit together can be integrated on transistor array substrate, and, detecting electrode Rx and drive electrode Tx is integrated into colored filter substrate (color filter glass, CF glass), and driving signal is integrated into display integrated circuit (display integrated circuit, displayIC) on, then can reduce the cost of integrated circuit and complicated circuit layout, and reduce the thickness of overall display contact panel.
In view of the problem of known display contact panel, the present invention proposes a kind of composite flooding circuit showing contact panel, and it is for reducing the quantity of driving circuit to reduce manufacturing cost, and can reduce the thickness of display contact panel.
Summary of the invention
One of fundamental purpose of the present invention, is to provide a kind of composite flooding circuit for showing contact panel, and it is for reducing the quantity of driving circuit to reduce manufacturing cost, and can reduce the thickness of display contact panel.
In order to reach above-mentioned censured object and effect, the present invention discloses a kind of composite flooding circuit showing contact panel, it is for driving a common electrode of display contact panel, and composite flooding circuit comprises a signal generating circuit, one scan control circuit and display touch-control circuit.Signal generating circuit exports a display signal and and drives clock pulse; Scan control circuit exports one scan signal, one first start signal and one second start signal, and scanning signal scans multiple pixels of this display contact panel; And display touch-control circuit couples scan control circuit, signal generating circuit and common electrode, and according to the first start signal output display signal to common electrode, or drive signal to common electrode according to the second start signal and driving clock pulse output one.
Accompanying drawing explanation
Fig. 1: it is the calcspar of an embodiment of display contact panel of the present invention;
Fig. 2: it is the circuit diagram of an embodiment of display touch-control circuit of the present invention;
Fig. 3: it is the sequential chart of an embodiment of display touch-control circuit of the present invention;
Fig. 4: it is the circuit diagram of another embodiment of display touch-control circuit of the present invention;
Fig. 5: it is the sequential chart of another embodiment of display touch-control circuit of the present invention; And
Fig. 6: it is the calcspar of the another embodiment of display touch-control circuit of the present invention.
[figure number is to as directed]
1 display contact panel 10 shows touch area
20 composite flooding circuit 30 scan control circuits
40 display touch-control circuit 50 signal generating circuits
60 common circuit 620 first input circuits
622 second input circuit 64 output circuits
660 first booster circuit 662 second booster circuits
68 discharge circuit 69 mu balanced circuits
70 touch-control circuit 72 input circuits
74 output circuit 76 booster circuits
78 discharge circuit 80 touch-control circuits
81 touch-control circuit 82 touch-control circuits
A node C node
C1 node C2 node
CAP
1bootstrap capacitor CAP
2bootstrap capacitor
F node M 1 transistor
M2 transistor M3 transistor
M4 transistor M5 transistor
M6 transistor M7 transistor
OUT output terminal T1 first period
Between the T2 second phase T3 third phase
Between the T4 fourth phase between the T5 fifth phase
During T6 the 6th period T7 the 7th
During T8 the 8th period T9 the 9th
V
cOMdisplay signal V
dDvoltage
V
dRIdrive clock pulse V
dRI1drive signal
V
g2control signal V
g4control signal
V
g6control signal V
g8control signal
V
oN1conducting signal V
oN2conducting signal
V
r1-1first boosting signal V
r1-2second boosting signal
V
r2boosting signal V
rEGvoltage stabilizing signal
V
sCANscanning signal V
sSvoltage
V
sT1first start signal V
sT2second start signal
Embodiment
In order to make architectural feature of the present invention and effect of reaching have a better understanding and awareness, spy's preferred embodiment and coordinate detailed description, is described as follows:
Refer to Fig. 1, Fig. 1 is the calcspar of an embodiment of display contact panel of the present invention.As shown in the figure, the present invention is a kind of composite flooding circuit 20 showing contact panel, it is for driving a common electrode (not shown) of display contact panel 1, the opposite side electrode of the liquid crystal layer of the corresponding display panel of this common electrode is for driving liquid crystal layer, or can as the sensing electrode of contact panel to detect the touch-control behavior of user, so, the present invention in contact panel can reduce arrange a sensing electrode layer with reduce display contact panel 1 thickness.Moreover composite flooding circuit 20 of the present invention comprises a signal generating circuit 50, one scan control circuit 30 and a display touch-control circuit 40.Signal generating circuit 50 exports a display signal V
cOMand one drives clock pulse V
dRI; Scan control circuit 30 exports one scan signal V
sCAN, one first start signal V
sT1and one second start signal V
sT2, scanning signal V
sCANmultiple pixels of scanning display contact panel 1; And display touch-control circuit 40 couples scan control circuit 30, signal generating circuit 50 and common electrode, and according to the first start signal V
sT1output display signal V
cOMto common electrode, or according to the second start signal V
sT2and drive clock pulse V
dRIexport one and drive signal V
dRI1to common electrode.
Moreover scan control circuit 30 of the present invention is according to scanning signal V
sCANexport the first start signal V
sT1or this second start signal V
sT2to display touch-control circuit 40, so display touch-control circuit 40 is more according to scanning signal V
sCANoutput display signal V
cOMor drive signal V
dRI1to common electrode.So, as scanning signal V
sCANwhen scanning shows those pixels of touch area 10, display touch-control circuit 40 output display signal V
cONto common electrode, as scanning signal V
sCANwhen not scanning those pixels of display touch area 10, display touch-control circuit 40 exports and drives signal V
dRI1to common electrode.Therefore, the scanning signal V that touch-control circuit 40 can export by scan control circuit 30 is shown
sCANcarry out signal synchronous, and stagger touch-control scanning and the time of display frame, during to avoid detecting touch-control event, be subject to the noise of display frame.In addition, the present invention is by display signal V
cOMwith driving signal V
dRI1be integrated into display touch-control circuit 40, and the quantity of driving circuit can be reduced, and because a touch-control circuit additionally must do not arranged on touch-control glass substrate, so display contact panel 1 of the present invention effectively can reduce thickness.
In addition, the control signal V shown in Fig. 1
g2, V
g4as scan control circuit 30 what controls display touch-control circuit 40, refers to following explanation.
Refer to Fig. 2, it is the circuit diagram of an embodiment of display touch-control circuit of the present invention.As shown in the figure, show touch-control circuit 40 and comprise common circuit 60 and a touch-control circuit 70.Common circuit 60 couples scan control circuit 30, signal generating circuit 50 and common electrode, and according to the first start signal V
sT1output display signal V
cOMto common electrode.Touch-control circuit 70 couples scan control circuit 30, signal generating circuit 50, common circuit 60 and common electrode, and according to the second start signal V
sT2and drive clock pulse V
dR1export and drive signal V
dRI1to common electrode.
Consult Fig. 2 again, common circuit 60 comprises one first input circuit 620, bootstrap capacitor CAP
1, output circuit 64 and one first booster circuit 660.Wherein, display touch-control circuit 40 of the present invention is by N-type metal oxide semiconductor field effect transistor (Metal-Oxide-Semiconductor Field-EffectTransistor, MOSFET) form, so, the present invention can also utilize P type MOSFET to design display touch-control circuit 40, so the present invention does not limit the circuit framework of display touch-control circuit 40.First input circuit 620 of the present invention couples scan control circuit 30 and a voltage V
dD, scan control circuit 30 is with the first start signal V
sT1control the first input circuit 620 conducting or cut-off, so, when scan control circuit 30 controls the first input circuit 620 conducting, the first input circuit 620 is according to voltage V
dDproduce a conducting signal V
oN1.In other words, the first input circuit 620 couples scan control circuit 30, and scan control circuit 30 controls the first input circuit 620 produces conducting signal V
oN1.In addition, scan control circuit 30 is more with the first start signal V
sT1control transistor M1 conducting or cut-off, so, scan control circuit 30 is with the first start signal V
sT1control the first input circuit 620 and transistor M1 conducting or cut-off, to make bootstrap capacitor CAP simultaneously
1conducting signal V can be stored
oN1.
Bootstrap capacitor CAP of the present invention
1couple the first input circuit 620 and store conducting signal V
oN1.In addition, although the present invention is for storing conducting signal V
oN1capacitor be called bootstrap capacitor, but this capacitor title is for representing the effect itself had, but not stores conducting signal V for limiting
oN1the specification of capacitor, so the present invention is only an embodiment using bootstrap capacitor as the title of capacitor.First booster circuit 660 of the present invention couples scan control circuit 30, and receives a control signal V of scan control circuit 30 output
g2, so, the first booster circuit 660 is according to control signal V
g2produce one first boosting signal V
r1-1.In other words, the first booster circuit 660 couples scan control circuit 30, and scan control circuit 30 controls the first booster circuit 660 and exports one first boosting signal M
r1-1.Now, bootstrap capacitor CAP
1more couple the first booster circuit 660 and receive the first boosting signal V
r1-1, to promote the voltage quasi position of node C.
Output circuit 64 of the present invention couples bootstrap capacitor CAP
1, signal generating circuit 50 and common electrode, and receive display signal V
cOM, conducting signal V
oN1and the first boosting signal V
r1-1, and, conducting signal V
oN1and the first boosting signal V
r1-1for controlling output circuit 64 output display signal V
cOM.So, as bootstrap capacitor CAP
1receive conducting signal V
oN1and the first boosting signal V
r1-1time, conducting signal V
oN1and the first boosting signal V
r1-1output circuit 64 output display signal V is controlled via transistor M2
cOMto common electrode.In other words, output circuit 64 couples bootstrap capacitor CAP
1, signal generating circuit 50 and common electrode, and according to conducting signal V
oN1and the first boosting signal V
r1-1output display signal V
cOMto common electrode.
Consult Fig. 2 again, common circuit 60 of the present invention more comprises a discharge circuit 68, as the term suggests discharge circuit 68 is for performing electric discharge work, and discharge circuit 68 is for the bootstrap capacitor CAP that discharges
1, so discharge circuit 68 couples bootstrap capacitor CAP
1and scan control circuit 30, and receive the second start signal V
sT2, so, scan control circuit 30 is with the second start signal V
sT2the conducting of controlled discharge circuit 68 or cut-off.Therefore, when circuit 68 conducting of scan control circuit 30 controlled discharge, discharge circuit 68 discharges bootstrap capacitor CAP
1conducting signal V
oN1and the first boosting signal V
r1-1.In other words, discharge circuit 68 couples bootstrap capacitor CAP
1and scan control circuit 30, scan control circuit 30 controlled discharge circuit 68 discharges bootstrap capacitor CAP
1.Therefore, to discharge bootstrap capacitor CAP by discharge circuit 68
1stored energy, output circuit 64 also can change cut-off state into by conducting state, and now, output circuit 64 can not output display signal V
cOM.But, because scan control circuit 30 is more with the second start signal V
sT2control touch-control circuit 70, so, when output circuit 64 can not output display signal V in output terminal OUT
cOMtime, touch-control circuit 70 starts to export driving signal V in output terminal OUT
dRI1.
Consult Fig. 2 again, touch-control circuit 70 of the present invention comprises input circuit 72, bootstrap capacitor CAP
2, output circuit 74 and a booster circuit 76.Input circuit 72 couples scan control circuit 30 and receives one second start signal V
sT2and voltage V
dD,scan control circuit 30 is with the second start signal V
sT2control inputs circuit 72 conducting or cut-off, so, when circuit 72 conducting of scan control circuit 30 control inputs, input circuit 72 is according to voltage V
dDproduce a conducting signal V
oN2.In other words, input circuit 72 couples scan control circuit 30, and scan control circuit 30 control inputs circuit 72 produces conducting signal V
oN2.In addition, scan control circuit 30 is more with the second start signal V
sT2control transistor M4 conducting or cut-off, so, scan control circuit 30 is with the second start signal V
sT2simultaneously control inputs circuit 72 and transistor M4 conducting or cut-off, to make bootstrap capacitor CAP
2conducting signal V can be stored
oN2.
Bootstrap capacitor CAP of the present invention
2couple input circuit 72, and as the bootstrap capacitor CAP of common circuit 60
1and for storage power, i.e. bootstrap capacitor CAP
2store conducting signal V
oN2.Moreover the booster circuit 76 of touch-control circuit 70 couples scan control circuit 30, and receiver voltage V
dDand the control signal V that scan control circuit 30 exports
g4, so scan control circuit 30 is to control signal V
g4control conducting or the cut-off of booster circuit 76.So, when scan control circuit 30 controls booster circuit 76 conducting, booster circuit 76 is according to voltage V
dDproduce a boosting signal V
r2.In other words, booster circuit 76 couples scan control circuit 30, and scan control circuit 30 controls booster circuit 76 and exports boosting signal V
r2.Now, bootstrap capacitor CAP
2more couple booster circuit 76 and receive boosting signal V
r2, to promote the voltage quasi position of node A.
Output circuit 74 of the present invention couples bootstrap capacitor CAP
2, signal generating circuit 50 and common electrode, and receive and drive clock pulse V
dRIand conducting signal V
oN2, and, conducting signal V
oN2driving clock pulse V is exported for controlling output circuit 74
dRI.So, as bootstrap capacitor CAP
2store conducting signal V
oN2time, conducting signal V
oN2control output circuit 74 conducting via transistor M5, drive clock pulse V to export
dRIto common electrode.In addition, bootstrap capacitor CAP
2more receive boosting signal V
r2, namely output circuit 74 more couples booster circuit 76, and according to boosting signal V
r2export and drive signal V
dRI1, and boosting signal V
r2for promoting the driving signal V exporting common electrode to
dRI1.Now, conducting signal V
oN2and boosting signal V
r2control output circuit 74 according to driving clock pulse V
dRIexport and drive signal V
dRI1.In other words, output circuit 74 couples bootstrap capacitor CAP
2, signal generating circuit 50 and common electrode, and according to conducting signal V
oN2and drive clock pulse V
dRIexport and drive signal V
dRI1to common electrode, and more couple booster circuit 76, with foundation boosting signal V
r2promote the driving signal V exporting common electrode to
dRI1.
Touch-control circuit 70 of the present invention comprises a discharge circuit 78 as common circuit 60, and the effect of the discharge circuit 78 of touch-control circuit 70 is as the effect of the discharge circuit 68 of common circuit 60, so discharge circuit 78 couples bootstrap capacitor CAP
2and scan control circuit 30, and receive the first start signal V
sT1, so, scan control circuit 30 is with the first start signal V
sT1controlled discharge circuit 78 discharges bootstrap capacitor CAP
2stored energy.In other words, discharge circuit 78 couples bootstrap capacitor CAP
2and scan control circuit 30, scan control circuit 30 controlled discharge circuit 78 discharges bootstrap capacitor CAP
2.In like manner, when discharge circuit 78 discharges bootstrap capacitor CAP
2time, output circuit 74 can not export and drive signal V
dRI1.But, because scan control circuit 30 is more with the first start signal V
sT1control common circuit 60, so, when output circuit 74 can not export driving signal V in output terminal OUT
dRI1time, common circuit 60 starts output display signal V in output terminal OUT
cOM.
See also Fig. 2 and Fig. 3, Fig. 3 is the sequential chart of an embodiment of display touch-control circuit of the present invention.As shown in the figure, in first period T1, the first start signal V
sT1during for high levle, the first input circuit 620 and transistor M1 are conducting state, and the first input circuit 620 is according to voltage V
dDproduce conducting signal V
oN1, now, bootstrap capacitor CAP
1store conducting signal V
oN1, namely the voltage quasi position of node C is conducting signal V
oN1voltage quasi position, and node C1 is ground connection level (voltage V as shown in Figure 2
sSvoltage quasi position).As shown in Figure 3, the voltage quasi position of node C is via conducting signal V
oN1charging and rise gradually.So, conducting signal V
oN1via transistor M2 conducting output circuit 64, so, output circuit 64 output display signal V
cOMto common electrode.In second phase T2, control signal V
g2for high levle and conducting first booster circuit 660, so the first booster circuit 660 produces the first boosting signal V
r1-1, now, bootstrap capacitor CAP
1according to conducting signal V
oN1and the first boosting signal V
r1-1, make the voltage quasi position of node C be promoted to conducting signal V
oN1and the first boosting signal V
r1-1the voltage quasi position (as shown in Figure 3) of sum, so, the output display signal V that output circuit 64 is stable
cOMto common electrode.
Moreover, T3 between in first period T1 to the third phase, scanning signal V
sCANthose pixels of scanning display touch area 10, so common circuit 60 is except first period T1 and second phase T2 output display signal V
cOMoutward, T3 common circuit 60 also synchronous scanning signal V between the third phase
sCANand continue output display signal V
cOM.So, T4 between the fourth phase, because of scanning signal V
sCANdo not scan those pixels of display touch area 10, so scan control circuit 30 is with the second start signal V of high levle
sT2controlled discharge circuit 68, and the bootstrap capacitor CAP that discharges
1the conducting signal V received
oN1and the first boosting signal V
r1-1, namely the voltage quasi position of node C is reduced to ground connection level, and makes common circuit 60 no longer output display signal V
cOM.
Accept above-mentioned, T4 between the fourth phase, the second start signal V of high levle
sT2the more input circuit 72 of conducting touch-control circuit 70, so input circuit 72 exports conducting signal V
oN2to bootstrap capacitor CAP
2, the voltage quasi position of node A rises to conducting signal V gradually as shown in Figure 3
oN2voltage quasi position, thereafter, common circuit 60 between the fourth phase during T4 discharge off, the bootstrap capacitor CAP of touch-control circuit 70
2t5 conducting output circuit 74 between the fifth phase, output circuit 74 is according to driving clock pulse V
dRIexport and drive signal V
dRI1to common electrode.Moreover, in the 6th period T6, control signal V
g4control booster circuit 76 for high levle, so, booster circuit 76 is according to voltage V
dDexport boosting signal V
r2, now, bootstrap capacitor CAP
2according to conducting signal V
oN2and boosting signal V
r2, and make the voltage quasi position of node A also be promoted to conducting signal V
oN2and boosting signal V
r2the voltage quasi position (as shown in Figure 3) of sum, therefore booster circuit 76 promotes the driving signal V that output circuit 74 exports common electrode to
dRI1(as shown in the 6th period T6 of Fig. 3).So, between the fifth phase, T5 is to the 7th period T7, because of scanning signal V
sCANdo not scan those pixels, so touch-control circuit 70 T5 between the fifth phase exports to the 7th period T7 and drives signal V
dRI1.So, signal V is driven
dRI1with display signal V
cON, scanning signal V
sCANsynchronously can not mutually disturb.
In the 8th period T8, the first start signal V of high levle
sT1controlled discharge circuit 78 discharges bootstrap capacitor CAP
2, and the input circuit 620 of conducting common circuit 60, so the voltage quasi position of node A is reduced to ground connection level, and the voltage quasi position of node C is promoted to conducting signal V gradually
oN1voltage quasi position.So the 9th period T9, scanning signal V
sCANstart to scan those pixels, and common circuit 60 stablizes output display signal V
cOM.In other words, touch-control circuit 70 no longer exports and drives signal V
dRI1, and change by common circuit 60 output display signal V
cOM, all the other follow-up duties as previously described, are no longer covered in this and are stated.In addition, when show touch-control circuit 40 change designed by P type MOSFET time, the signal reference position that scan control circuit 30 exports also must change, and all the other work are similar to aforementioned, so no longer describe in detail.
Refer to Fig. 4, it is the circuit diagram of another embodiment of display touch-control circuit of the present invention.The difference of Fig. 4 and Fig. 2 is that the common circuit 60 of Fig. 4 more comprises one second input circuit 622,1 second booster circuit 662 and a mu balanced circuit 69.Second input circuit 622 couples scan control circuit 30, and scan control circuit 30 controls the second input circuit 622 and produces this conducting signal V
oN1.Second booster circuit 662 couples scan control circuit 30, and scan control circuit 30 controls the second booster circuit 662 and exports one second boosting signal V
r1-2.In addition, the principle of work of the second input circuit 622 and the second booster circuit 662 as the first input circuit 620 and the first booster circuit 660, so, only sketch its technology contents above.
Accept above-mentioned, mu balanced circuit 69, as the term suggests mu balanced circuit 69 is for stable common circuit 60, especially make common circuit 60 stablize output display signal V
cOM.So mu balanced circuit 69 couples discharge circuit 68 and bootstrap capacitor CAP
1, and receiver voltage V
dDand bootstrap capacitor CAP
1stored energy, and, bootstrap capacitor CAP
1stored energy exports a voltage stabilizing signal V for controlling mu balanced circuit 69
rEGto discharge circuit 68.So, as bootstrap capacitor CAP
1receive conducting signal V
oN1and the first boosting signal V
rI-1time, it makes mu balanced circuit 69 according to voltage V
dDexport voltage stabilizing signal V
rEGto discharge circuit 68, i.e. voltage stabilizing signal V
rEGpromote the voltage quasi position of node F, stablize output display signal V to make common circuit 60
cOM.In other words, mu balanced circuit 69 couples discharge circuit 68, and exports voltage stabilizing signal V
rEGto discharge circuit 68, to maintain display signal V
cOM, refer in particular to and maintain display signal V
cOMvoltage quasi position.
In addition, the present invention stablizes output display signal V for making common circuit 60
cOM, discharge circuit 68 is increased a transistor M7, transistor M7 coupling transistors M6 and mu balanced circuit 69, and transistor M7 is same with transistor M6 is by the second start signal V
sT2control.Moreover the common circuit 60 of Fig. 4 more increases by a transistor M3 to coordinate the second input circuit 622, makes bootstrap capacitor CAP
1storage power.
Refer to Fig. 5, it is the sequential chart of another embodiment of display touch-control circuit of the present invention.As shown in the figure, Fig. 5 increases the work schedule of control second input circuit 622 and the second booster circuit 662, namely increases and controls signal V
g6and control signal V
g8sequential, so, because its principle of work is similar to aforementioned, so, no longer cover in this and state.
Refer to Fig. 6, it is the calcspar of the another embodiment of display touch-control circuit of the present invention.As shown in the figure, touch-control circuit 70 can be designed to multiple touch-control circuit 80 ~ 82 by display touch-control circuit 40 of the present invention, so, and the driving signal V that each touch-control circuit 80,81,82 of summation exports
dRI1can promote the driving force of contact panel, and its principle of work please refer to aforementioned explanation to do suitable amendment.
In sum, the present invention discloses a kind of composite flooding circuit showing contact panel, and it is for driving a common electrode of display contact panel, and composite flooding circuit comprises a signal generating circuit, one scan control circuit and display touch-control circuit.Signal generating circuit exports a display signal and and drives clock pulse; Scan control circuit exports one scan signal, one first start signal and one second start signal, and scanning signal scans multiple pixels of this display contact panel; And display touch-control circuit couples scan control circuit, signal generating circuit and common electrode, and according to the first start signal output display signal to common electrode, or drive signal to common electrode according to the second start signal and driving clock pulse output one.
Above is only preferred embodiment of the present invention, not be used for limiting scope of the invention process, all equalizations of doing according to shape, structure, feature and the spirit described in the claims in the present invention scope change and modify, and all should be included in right of the present invention.
Claims (10)
1. show a composite flooding circuit for contact panel, it is characterized in that, it is for driving a common electrode of display contact panel, and this composite flooding circuit comprises:
One signal generating circuit, exports a display signal and and drives clock pulse;
One scan control circuit, export one scan signal, one first start signal and one second start signal, this scanning signal scans multiple pixels of this display contact panel; And
One display touch-control circuit, couple this scan control circuit, this signal generating circuit and this common electrode, and export this display signal to this common electrode according to this first start signal, or export a driving signal to this common electrode according to this second start signal and this driving clock pulse.
2. the composite flooding circuit of display contact panel as claimed in claim 1, it is characterized in that, wherein this scan control circuit exports this first start signal or this second start signal according to this scanning signal, and this display touch-control circuit more exports this display signal maybe this driving signal according to this scanning signal, when this scanning signal scans those pixels, this display touch-control circuit exports this display signal, and when this scanning signal does not scan those pixels, this display touch-control circuit exports this driving signal.
3. the composite flooding circuit of display contact panel as claimed in claim 1, it is characterized in that, wherein this display touch-control circuit comprises:
One common circuit, couples this scan control circuit, this signal generating circuit and this common electrode, and exports this display signal to this common electrode according to this first start signal; And
One touch-control circuit, couples this scan control circuit, this signal generating circuit, this common circuit and this common electrode, and exports this driving signal to this common electrode according to this second start signal and this driving clock pulse.
4. the composite flooding circuit of display contact panel as claimed in claim 1, it is characterized in that, wherein this display touch-control circuit comprises:
Multiple touch-control circuit, an output terminal of those touch-control circuits couples mutually, and according to this second start signal and this driving clock pulse to promote this driving signal.
5. the composite flooding circuit of display contact panel as claimed in claim 3, it is characterized in that, wherein this common circuit comprises:
One first input circuit, couples this scan control circuit, and this scan control circuit controls this first input circuit produces a conducting signal;
One first booster circuit, couples this scan control circuit, and this scan control circuit controls this first booster circuit and exports one first boosting signal;
One bootstrap capacitor, couples this first input circuit and this first booster circuit, and receives this conducting signal and this first boosting signal; And
One output circuit, couples this bootstrap capacitor, this signal generating circuit and this common electrode, and exports this display signal to this common electrode according to this conducting signal and this first boosting signal.
6. the composite flooding circuit of display contact panel as claimed in claim 5, it is characterized in that, wherein this common circuit more comprises:
One second input circuit, couples this scan control circuit, and this scan control circuit controls this second input circuit produces this conducting signal; And
One second booster circuit, couples this scan control circuit, and this scan control circuit controls this second booster circuit and exports one second boosting signal.
7. the composite flooding circuit of display contact panel as claimed in claim 5, it is characterized in that, wherein this common circuit more comprises:
One discharge circuit, couples this bootstrap capacitor and this scan control circuit, and this scan control circuit controls this discharge circuit and to discharge this bootstrap capacitor.
8. the composite flooding circuit of display contact panel as claimed in claim 7, it is characterized in that, wherein this common circuit more comprises:
One mu balanced circuit, couples this discharge circuit, and exports a voltage stabilizing signal to this discharge circuit, to maintain this display signal.
9. the composite flooding circuit of display contact panel as claimed in claim 3, it is characterized in that, wherein this touch-control circuit comprises:
One input circuit, couples this scan control circuit, and produces a conducting signal according to this second start signal;
One booster circuit, couples this scan control circuit, and this scan control circuit controls this booster circuit and exports a boosting signal;
One bootstrap capacitor, couples this input circuit and this booster circuit, and receives this conducting signal and this boosting signal; And
One output circuit, couple this bootstrap capacitor, this signal generating circuit and this common electrode, and export this driving signal to this common electrode according to this conducting signal and this driving clock pulse, and more couple this booster circuit, to promote this driving signal exporting this common electrode to according to this boosting signal.
10. the composite flooding circuit of display contact panel as claimed in claim 9, it is characterized in that, wherein this touch-control circuit more comprises:
One discharge circuit, couples this bootstrap capacitor and this scan control circuit, and this scan control circuit controls this discharge circuit and to discharge this 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104615291A true CN104615291A (en) | 2015-05-13 |
| CN104615291B CN104615291B (en) | 2017-12-08 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310542194.3A Active CN104615291B (en) | 2013-11-04 | 2013-11-04 | Show the composite flooding circuit of contact panel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106293179A (en) * | 2015-05-29 | 2017-01-04 | 凌巨科技股份有限公司 | The composite flooding circuit of display contact panel |
| 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 |
| CN107092386A (en) * | 2016-02-17 | 2017-08-25 | 爱特梅尔公司 | Device and method for connecting the electrodes to voltage |
| CN109271054A (en) * | 2017-07-17 | 2019-01-25 | 矽创电子股份有限公司 | Touch-control 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 |
| US20130113735A1 (en) * | 2011-11-07 | 2013-05-09 | Japan Display West Inc. | Display device with touch sensor, potential control method, and program |
| 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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| US20130113735A1 (en) * | 2011-11-07 | 2013-05-09 | Japan Display West Inc. | Display device with touch sensor, potential control method, and program |
| 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 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106293179A (en) * | 2015-05-29 | 2017-01-04 | 凌巨科技股份有限公司 | The composite flooding circuit of display contact panel |
| 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 |
| CN107092386A (en) * | 2016-02-17 | 2017-08-25 | 爱特梅尔公司 | Device and method for connecting the electrodes to voltage |
| CN107092386B (en) * | 2016-02-17 | 2022-04-05 | 爱特梅尔公司 | Device and method for connecting an electrode to a voltage |
| CN109271054A (en) * | 2017-07-17 | 2019-01-25 | 矽创电子股份有限公司 | Touch-control display driver circuit |
| CN109271054B (en) * | 2017-07-17 | 2023-07-21 | 矽创电子股份有限公司 | Touch display driving circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104615291B (en) | 2017-12-08 |
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