CN106293179A - The composite flooding circuit of display contact panel - Google Patents
The composite flooding circuit of display contact panel Download PDFInfo
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- CN106293179A CN106293179A CN201510288242.XA CN201510288242A CN106293179A CN 106293179 A CN106293179 A CN 106293179A CN 201510288242 A CN201510288242 A CN 201510288242A CN 106293179 A CN106293179 A CN 106293179A
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Abstract
The present invention is a kind of composite flooding circuit showing contact panel, and composite flooding circuit comprises one scan circuit, display touch-control circuit and a booster circuit.Scanning circuit produces multiple scanning signals, and those scanning signals scan multiple pixels；Display touch-control circuit couples scanning circuit, receives those scanning signals to produce a conducting signal；And booster circuit couples scanning circuit and display touch-control circuit, receive those scanning signals to provide an electronegative potential path, booster circuit is promoted the level of this conducting signal by this electronegative potential path, and wherein conducting signal is for producing a driving signal, drives this display contact panel.
Description
Technical field
The present invention is to show contact panel about one, shows answering of contact panel especially with respect to a kind of
Close drive circuit.
Background technology
The quickly evolution of touch-control Display Technique, breeds touch-control Display Technique for many years and includes single-glass
Formula, single layered transparent electrode multipoint mode and On cell/In cell etc..A contact panel generally have aobvious
Show circuit and touch-control circuit, and show that driving signal and touch-control drive signal difference very big, so display drives
Signal and touch-control drive signal generally each to be produced with touch-control circuit by display circuit respectively.But display drives
Signal drives signal to be produced by different circuit from touch-control, represents and necessarily takes up more circuit layout area.Cause
This, if can display circuit and touch-control circuit be combined, will certainly be greatly reduced the cost of product.
In view of the above problems, the present invention proposes to show the technology of the composite flooding circuit of contact panel.
Summary of the invention
An object of the present invention, for providing a kind of composite flooding circuit, it can reduce display touch-control
The circuit area of panel.
An object of the present invention, for providing a booster circuit, it can reduce general booster circuit
Circuit area, and meet high-frequency driving seasonal pulse.
To achieve these objectives, the present invention provides a kind of composite flooding circuit showing contact panel, compound
Drive circuit comprises one scan circuit, display touch-control circuit and a booster circuit.Scanning circuit produces multiple
Scanning signal, those scanning signals scan multiple pixels；Display touch-control circuit couples scanning circuit, and receiving should
A little scanning signals are to produce a conducting signal；And booster circuit couples scanning circuit and display touch-control circuit, connect
Receive those scanning signals to provide an electronegative potential path, booster circuit by this electronegative potential path promote this conducting news
Number level, wherein conducting signal for produce one driving signal, drive this display contact panel.
Accompanying drawing explanation
Fig. 1: it is the circuit diagram of an embodiment of display contact panel of the present invention；
Fig. 2: it is the circuit diagram of an embodiment of composite flooding circuit of the present invention；And
Fig. 3: it is the sequential chart of an embodiment of composite flooding circuit of the present invention.
[figure number is to as directed]
1 display contact panel
10 display touch areas
20 composite flooding circuit
30 scanning circuits
40 display touch-control circuits
50 signal generating circuits
60 touch-control circuits
61 input circuits
62 output circuits
63 discharge circuits
70 common circuits
71 input circuits
72 output circuits
73 discharge circuits
80 booster circuits
A node
C node
Cb bootstrap capacitor
COM display signal
DRI drives seasonal pulse
DRI1 drives signal
G10 scans signal
G12 scans signal
G30 scans signal
M1 transistor
M2 transistor
M3 transistor
M4 boost transistor
M5 transistor
M21 transistor
M22 transistor
M23 transistor
OUT outfan
T1 first is interval
T2 second is interval
T3 the 3rd is interval
T4 the 4th is interval
T5 the 5th is interval
VDDFirst power supply
VON1Conducting signal
VON2Conducting signal
VSSSecond source
Detailed description of the invention
In order to the architectural feature making the present invention and effect of being reached have a better understanding and awareness,
Spy's preferred embodiment and cooperation detailed description, be described as follows:
Referring to Fig. 1, it is the circuit diagram of an embodiment of display contact panel of the present invention.Such as figure
Shown in, the circuit of display contact panel 1 comprises composite flooding circuit 20 and a signal generating circuit 50, a signal
Produce circuit 50 and produce a driving seasonal pulse DRI and a display signal COM to composite flooding circuit 20, combination flooding
Galvanic electricity road 20 produces multiple scanning signal G10, G12, G30, driving signal DRI1 and display signal COM
To a display touch area 10, so that display touch area 10 can show a picture and have touch controllable function.
Furthermore, the composite flooding circuit 20 of the present invention comprises one scan circuit 30, and shows touch-control circuit
40 and a booster circuit 80.Display touch-control circuit 40 couples display touch area 10, scanning circuit 30, signal
Producing circuit 50 and booster circuit 80, booster circuit 80 couples scanning circuit 30.What scanning circuit 30 produced should
A little scanning signal G10, G12, G30, except multiple pixels of scanning display touch area 10, more control display
Touch-control circuit 40 and the running of booster circuit 80.Booster circuit 80 can make the running of display touch-control circuit 40 accord with
Close the driving seasonal pulse DRI of altofrequency (such as: 100KHz), and show that touch-control circuit 40 can be according to output
Drive seasonal pulse DRI to produce and drive signal DRI1, to drive touch controllable function.Additionally, display touch-control circuit 40 is more
Can be with output display signal COM to display touch area 10, to show picture.So, the display of the present invention
Touch-control circuit 40 can make display touch area 10 perform the work of display and touch-control.
Referring to Fig. 1 again, display touch-control circuit 40 receives those scanning signal G10, G12, G30,
Display touch-control circuit 40 produces display news according to those scanning signal G10, G12, G30 in an outfan OUT
Number COM, to show picture；And display touch-control circuit 40 scans signal G10, G12, G30 according to those
Produce in outfan OUT and drive signal DRI1, to control touch controllable function.
Referring to Fig. 2, it is the circuit diagram of an embodiment of composite flooding circuit of the present invention.Simultaneously
Refering to Fig. 1, wherein, display touch-control circuit 40 comprises touch-control circuit 60 and a common circuit 70, a touch-control circuit
60 couple booster circuit 80, and booster circuit 80 controls touch-control circuit 60 and makes it can apply to high-frequency driving
Under dynamic seasonal pulse DRI.In other words, display touch-control circuit 40 couples shared electrode, and according to scanning signal G10
And driving seasonal pulse DRI output driving signal DRI1 is to shared electrode, or display touch-control circuit 40 is interrogated according to scanning
Number G30 output display signal COM is to shared electrode.
Additionally, the outfan OUT of touch-control circuit 60 and common circuit 70 is same outfan, so
When panel is in the touch-control stage, touch-control circuit 60 can drive signal DRI1 to altogether via outfan OUT output
Enjoying electrode, when panel is in the display stage, common circuit 70 can be via outfan OUT output display signal
COM is to shared electrode.So, drive signal DRI1 will not interfere with display signal COM, and can
To reach a circuit (display touch-control circuit 40) generation driving signal DRI1 and display signal COM, and contract
Subtract the circuit layout area of display contact panel 1.
Again refering to Fig. 2, touch-control circuit 60 comprises input circuit 61, output circuit 62 and an electric discharge
Circuit 63, touch-control circuit 60 couples scanning circuit 30, signal generating circuit 50 and shared electrode, and according to sweeping
Retouch signal G10 and drive seasonal pulse DRI output to drive signal DRI1 to shared electrode.Wherein, input circuit 61
Couple scanning circuit 30 and the first power supply VDD, input circuit 61 is according to the first power supply VDDWith scanning signal G10
Produce a conducting signal VON1, now scanning signal G10 can be as one first scanning of touch-control circuit 60 reception
Signal.Wherein, input circuit 61 can be a transistor M1, and transistor M1 is coupled to the first power supply VDDWith
Between discharge circuit 63.Output circuit 62 couples input circuit 61, and receives conducting signal VON1During with driving
Arteries and veins DRI；Output circuit 62 is according to conducting signal VON1With drive seasonal pulse DRI, and in outfan OUT produce drive
Dynamic signal DRI1；Output circuit 62 can be a transistor M2, and transistor M2 is coupled to drive seasonal pulse DRI
And between outfan OUT.Wherein, conducting signal VON1For producing driving signal DRI1, to drive display
Contact panel 1.
Furthermore, output that can be complete for output circuit 62 drives seasonal pulse DRI, the boosting of the present invention
Circuit 80 controls conducting signal VON1Level, i.e. booster circuit 80 promote conducting signal VON1Level, as
This output circuit 62 can meet altofrequency and drive the demand of seasonal pulse DRI.Booster circuit 80 comprises a bootstrapping electricity
Hold Cb, a transistor M3 and a boost transistor M4, bootstrap capacitor Cb have one first end and one second end,
First end couples display touch-control circuit 40, stores conducting signal VON1, the second end coupling transistors M3, so
Bootstrap capacitor Cb is coupled to turn on signal VON1And between transistor M3, transistor M3 is parallel to the crystal that boosts
Pipe M4 and reception scanning signal G10.Therefore, now receive as booster circuit 80 with scanning signal G10
One first scanning signal provides an electronegative potential path to give bootstrap capacitor Cb, then certainly to control transistor M3 conducting
The second end lifting electric capacity Cb is electronegative potential, and the level of bootstrap capacitor Cb the first end is conducting signal VON1Standard
Position.
Accepting above-mentioned, boost transistor M4 has one first end, one second end and one the 3rd end, and first
End couples the second end, and the second end couples scanning circuit 30 and receives scanning signal G12, and the 3rd end couples crystal
Pipe M3 and bootstrap capacitor Cb.Now, the one second scanning news that scanning signal G12 receives as booster circuit 80
Number, when the level of bootstrap capacitor Cb the first end to be promoted, scanning signal G12 is high levle and conducting boosting
Transistor M4, so scanning signal G12 from electronegative potential path (transistor M3) to the of bootstrap capacitor Cb
Two end chargings, then the level of bootstrap capacitor Cb the first end is promoted to turn on signal VON1Level plus scanning news
The level of number G12.Therefore, scanning circuit 30 controls boost transistor M4 by electronegative potential according to scanning signal G12
Path charging bootstrap capacitor Cb, to promote conducting signal VON1Level.In other words, touch-control circuit 60 is permissible
The output complete because the level of node A promotes drives the level of seasonal pulse DRI.
Again refering to Fig. 2, in time showing that contact panel 1 enters the display stage from the touch-control stage, touch-control circuit
The discharge circuit 63 of 60 receives scanning signal G30, now receives as touch-control circuit 60 with scanning signal G30
One second scanning signal with control discharge circuit 63 reduce conducting signal VON1Level, such output circuit
62 will not be again according to driving seasonal pulse DRI to produce driving signal DRI1.In addition discharge circuit 63 can be a crystal
Pipe M5, transistor M5 are coupled to input circuit 61 and second source VSSBetween.Transistor M5 makes node A's
Level is reduced to second source VSSLevel.
But, when showing that contact panel 1 changes the touch-control stage into from the display stage, common circuit 70
Discharge circuit 73 receives scanning signal G10, one the now received for common circuit 70 with scanning signal G10
One scan signal, controls discharge circuit 73 and reduces conducting signal VON2Level, so discharge circuit 73 foundation
Scanning signal G10 reduces the level of node C, and such output circuit 72 will not output display signal COM again.
In other words, when those scanning signal G10, G12, G30 scan multiple pixels (display touch area 10),
Display touch-control circuit 40 output display signal COM, when those scanning signal G10, G12, G30 do not scan
During multiple pixel 10, display touch-control circuit 40 output drives signal DRI.
Accepting above-mentioned, change common circuit 70 in the display stage and start working, common circuit 70 comprises one
Input circuit 71, one output circuit 72 and a discharge circuit 73, common circuit 70 couples scanning circuit 30, touches
Control circuit 60, signal generating circuit 50 and shared electrode, now scanning signal G30 connects as common circuit 70
The one second scanning signal received, and according to scanning signal G30 output display signal COM to shared electrode.Its
In, input circuit 71 couples scanning circuit 30, and receives scanning signal G30 and the first power supply VDD, scanning news
Number G30 controls input circuit 71 according to the first power supply VDDProduce a conducting signal VON2, i.e. input circuit 71
According to scanning signal G30 and the first power supply VDDProduce a conducting signal VON2.Output circuit 72 couples shares electricity
Pole, and receive conducting signal VON2With display signal COM, turn on signal VON2Controlling output circuit 72 will be aobvious
Show that signal COM exports to shared electrode, so output circuit 72 is according to conducting signal VON2Output display signal
COM is to shared electrode.Wherein, input circuit 71 can be a transistor M21, and output circuit 72 can be
One transistor M22 and discharge circuit 73 can be a transistor M23, remaining technology and input circuit 61, defeated
Go out circuit 62 and discharge circuit 63 is similar, no longer repeat.
Referring to Fig. 3, it is the sequential chart of an embodiment of composite flooding circuit of the present invention.Please one
And refering to Fig. 2 and Fig. 3, in the first interval T1, scanning signal G10 is high levle, transistor M1, transistor
M3 and transistor M23 is conducting state, and the level of node A is charged to the first power supply VDDLevel, node
C is reduced to second source VSS；Conducting signal VON1It is the first power supply VDDLevel, transistor M2 turn on,
Its interior joint A is floating potential；Now outfan OUT is according to driving seasonal pulse DRI output to drive signal DRI1,
And drive the level of signal DRI1 less than the level driving seasonal pulse DRI.In the second interval T2, scan signal G12
Changing into high levle, boost transistor M4 turns on, and scanning signal G12 is electric to bootstrapping via electronegative potential path
Holding Cb charging, the level of such node A is promoted to the first power supply VDDPlus the level of scanning signal G12, this
Time outfan OUT can completely export drive seasonal pulse DRI level.
In the 3rd interval T3, display contact panel 1 is in the stage that can perform touch controllable function, and is total to
Will not be in outfan OUT output display signal COM with circuit 70.In the 4th interval T4, scan signal G30
For high levle, transistor M21 and transistor M5 is conducting state, and the level of node C is charged to the first electricity
Source VDDLevel, node A is discharged to second source VSSLevel；Conducting signal VON2Control transistor
M22 conducting and in outfan OUT output display signal COM.In the 5th interval T5, show contact panel 1
It is in the stage that can show picture, and touch-control circuit 60 will not drive signal in outfan OUT output
DRI1.Subsequent conditioning circuit action is identical with the first interval T5 of interval T1 to the 5th, no longer covers and states.
In sum, a kind of composite flooding circuit showing contact panel of the present invention, combination flooding galvanic electricity
Road comprises one scan circuit, display touch-control circuit and a booster circuit.Scanning circuit produces multiple scanning news
Number, those scanning signals scan multiple pixels；Display touch-control circuit couples scanning circuit, receives those scanning
Signal is to produce a conducting signal；And booster circuit couples scanning circuit and display touch-control circuit, receive those
Scanning signal is to provide an electronegative potential path, and booster circuit is promoted the standard of this conducting signal by this electronegative potential path
Position, wherein conducting signal is for producing a driving signal, drives this display contact panel.
Above is only presently preferred embodiments of the present invention, be not used for limiting the model that the present invention implements
Enclose, all impartial changes done according to the shape described in scope of the invention as claimed, structure, feature and spirit
With modification, all should be included in scope of the presently claimed invention.
Claims (10)
1. the composite flooding circuit showing contact panel, it is characterised in that this composite flooding circuit comprises:
One scan circuit, produces multiple scanning signal, and those scanning signals scan multiple pixels；
One display touch-control circuit, couples this scanning circuit, receives those scanning signals to produce a conducting signal；And
One booster circuit, couple this scanning circuit and this display touch-control circuit, receive those scanning signals to provide an electronegative potential path, this booster circuit is promoted the level of this conducting signal by this electronegative potential path, wherein this conducting signal is for producing a driving signal, drives this display contact panel.
2. the composite flooding circuit showing contact panel as claimed in claim 1, it is characterised in that wherein this booster circuit comprises:
One bootstrap capacitor, has one first end and one second end, and this first end couples this display touch-control circuit, stores this conducting signal；
One transistor, couples this second end and receives one first scanning signal of those scanning signals, to provide this electronegative potential path in this bootstrap capacitor；And
One boost transistor, couple this second end, and with this coupled in parallel, this boost transistor couples this scanning circuit and receives one second scanning signal of those scanning signals, this scanning circuit controls this boost transistor according to this second scanning signal and is charged this bootstrap capacitor by this electronegative potential path, to promote the level of this conducting signal.
3. the composite flooding circuit showing contact panel as claimed in claim 2, it is characterized in that, wherein this boost transistor has one first end, one second end and one the 3rd end, this first end couples this second end, this the second end this scanning circuit of coupling, the 3rd end couples this bootstrap capacitor of this transistor AND gate.
4. the composite flooding circuit showing contact panel as claimed in claim 1, it is characterized in that, wherein this display touch-control circuit couples a shared electrode, and drive seasonal pulse to export this driving signal to this shared electrode according to this first scanning signal and one, or export a display signal to this shared electrode according to this second scanning signal.
5. the composite flooding circuit showing contact panel as claimed in claim 1, it is characterized in that, wherein when those scanning signals scan those pixels, this display touch-control circuit exports this display signal, when those scanning signals do not scan those pixels, this display touch-control circuit exports this driving signal.
6. the composite flooding circuit showing contact panel as claimed in claim 1, it is characterised in that wherein this display touch-control circuit comprises:
One touch-control circuit, couples this scanning circuit, a signal generating circuit and a shared electrode, and drives seasonal pulse to export this driving signal to this shared electrode according to this first scanning signal and one；And
One common circuit, couples this scanning circuit, this touch-control circuit, this signal generating circuit and this shared electrode, and exports a display signal to this shared electrode according to this second scanning signal.
7. the composite flooding circuit showing contact panel as claimed in claim 6, it is characterised in that wherein this common circuit comprises:
One input circuit, couples this scanning circuit, and produces a conducting signal according to this second scanning signal；And
One output circuit, couples this shared electrode, and exports this display signal to this shared electrode according to this conducting signal.
8. the composite flooding circuit showing contact panel as claimed in claim 7, it is characterised in that wherein this common circuit further includes:
One discharge circuit, couples this scanning circuit, and this scanning circuit controls this discharge circuit and reduces the level of this conducting signal.
9. the composite flooding circuit showing contact panel as claimed in claim 6, it is characterised in that wherein this touch-control circuit comprises:
One input circuit, couples this scanning circuit, and produces this conducting signal according to this first scanning signal；And
One output circuit, couples this shared electrode, and according to this conducting signal1And this driving seasonal pulse exports this driving signal to this shared electrode.
10. the composite flooding circuit showing contact panel as claimed in claim 9, it is characterised in that wherein this touch-control circuit further includes:
One discharge circuit, couples this scanning circuit, and this scanning circuit controls this discharge circuit and reduces the level of this conducting signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510288242.XA CN106293179B (en) | 2015-05-29 | 2015-05-29 | Composite driving circuit for display touch panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510288242.XA CN106293179B (en) | 2015-05-29 | 2015-05-29 | Composite driving circuit for display touch panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106293179A true CN106293179A (en) | 2017-01-04 |
| CN106293179B CN106293179B (en) | 2023-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510288242.XA Active CN106293179B (en) | 2015-05-29 | 2015-05-29 | Composite driving circuit for display touch panel |
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| CN (1) | CN106293179B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001056749A (en) * | 1999-08-19 | 2001-02-27 | Ricoh Co Ltd | Writing information input system |
| WO2012029767A1 (en) * | 2010-09-02 | 2012-03-08 | シャープ株式会社 | Semiconductor circuit and display device |
| US20120146936A1 (en) * | 2010-12-10 | 2012-06-14 | Tzu-Wei Liu | Liquid crystal display having touch sensing functionality and touch sensing method thereof |
| CN103823590A (en) * | 2014-01-22 | 2014-05-28 | 矽创电子股份有限公司 | Driving circuit, touch device and touch module thereof and manufacturing method |
| US20150054781A1 (en) * | 2013-08-21 | 2015-02-26 | Japan Display Inc. | Liquid crystal display device with touch panel |
| CN104615291A (en) * | 2013-11-04 | 2015-05-13 | 凌巨科技股份有限公司 | Composite driving circuit for display touch panel |
| CN204926030U (en) * | 2015-05-29 | 2015-12-30 | 凌巨科技股份有限公司 | Combined drive circuit that shows touch panel |
-
2015
- 2015-05-29 CN CN201510288242.XA patent/CN106293179B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001056749A (en) * | 1999-08-19 | 2001-02-27 | Ricoh Co Ltd | Writing information input system |
| WO2012029767A1 (en) * | 2010-09-02 | 2012-03-08 | シャープ株式会社 | Semiconductor circuit and display device |
| US20120146936A1 (en) * | 2010-12-10 | 2012-06-14 | Tzu-Wei Liu | Liquid crystal display having touch sensing functionality and touch sensing method thereof |
| US20150054781A1 (en) * | 2013-08-21 | 2015-02-26 | Japan Display Inc. | Liquid crystal display device with touch panel |
| CN104615291A (en) * | 2013-11-04 | 2015-05-13 | 凌巨科技股份有限公司 | Composite driving circuit for display touch panel |
| CN103823590A (en) * | 2014-01-22 | 2014-05-28 | 矽创电子股份有限公司 | Driving circuit, touch device and touch module thereof and manufacturing method |
| CN204926030U (en) * | 2015-05-29 | 2015-12-30 | 凌巨科技股份有限公司 | Combined drive circuit that shows touch panel |
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| Publication number | Publication date |
|---|---|
| CN106293179B (en) | 2023-09-29 |
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