CN106406614A - A time division drive circuit and a display panel - Google Patents
A time division drive circuit and a display panel Download PDFInfo
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- CN106406614A CN106406614A CN201610829422.9A CN201610829422A CN106406614A CN 106406614 A CN106406614 A CN 106406614A CN 201610829422 A CN201610829422 A CN 201610829422A CN 106406614 A CN106406614 A CN 106406614A
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- control
- signal
- control module
- outfan
- power supply
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
Abstract
The invention provides a time division drive circuit and a display panel. Via first, second and third control modules, power source signals with different dropouts can be switched in a display drive stage and a touch control drive stage, so that a switching voltage with a high dropout is output in the display drive stage for a display drive circuit; a switching voltage with a lower dropout is output in the touch control drive stage for a touch control drive circuit. Thus, power consumption is reduced and damage to the touch control drive circuit caused by switching voltages with high dropouts can be prevented. Besides, according to the invention, a drive chip only needs to output power source signals with different dropouts in the display drive stage and the touch control drive stage and does not need to provide additional power source signal output ends, so that the objective of time division multiplexing of a grid switching voltage of the touch control and display stages can be achieved.
Description
Technical field
The present invention relates to display technology field, more particularly, to a kind of timesharing drive circuit and display floater.
Background technology
Developing rapidly with Display Technique, touch-control display product, gradually in the life of people, touches accordingly
The market scale touching display floater is also increasing, and in order to improve competitive strength, the manufacturer of each touch panel is to simplify production
Technique, reduces production cost, and raising performance is target, improves constantly the production scientific and technological level of contact panel.
The touch-control using at present shows integrated module, passes through display driver circuit and charge to pixel line by line during display, is touching
Drive the touch-control drive electrode on array base palte, and the induction electrode by color film surface line by line with another group of drive circuit during control
Come the position of sensing finger.Conventional touch-control shows in integrated module, provides to touch drive circuit and display driver circuit
Power supply signal is constant, and drives stage and display driving stage to be supplied to corresponding drive circuit in touch-control respectively, is used as
In drive circuit, the switching voltage of each transistor, to complete display and touch-control driving function, drives sweep phase in touch-control and shows
Show the power supply signal driving sweep phase time-sharing multiplex identical and constant.But actually drive the stage in touch-control, be supplied to driving
In circuit the switching voltage of transistor do not need the same high with the switching voltage in display stage although the switching voltage of High Pressure Difference
Can ensure that effective output of display driver circuit, but be then not required to adopt high pressure difference switch for touch drive circuit
Voltage, to drive, when therefore adopting the switching voltage of High Pressure Difference to drive touch drive circuit, can cause non-essential power consumption；And
Transistor fabrication in touch drive circuit generally uses CMOS technology, under the switching voltage of High Pressure Difference controls, CMOS crystal
Pipe easily occur punch through damage, leakage current larger the problems such as, thus leading to CMOS transistor characteristic to be deteriorated.
Therefore, how to improve touch-control and show in integrated module, there is non-essential power consumption, and the switching voltage of High Pressure Difference is easy
The problem of infringement touch drive circuit, is those skilled in the art's technical problem urgently to be resolved hurrily.
Content of the invention
Embodiments provide a kind of timesharing drive circuit and display floater, in order to solve present in prior art
Touch-control shows there is non-essential power consumption in integrated module, and the switching voltage of High Pressure Difference easily damages asking of touch drive circuit
Topic.
Embodiments provide a kind of timesharing drive circuit, including：First control module, the second control module and
Three control modules；Wherein,
In the display driving stage, described first control module is used under the control of the first control signal, output first electricity
Source signal and second source signal；
Drive the stage in touch-control, described second control module is used under the control of the second control signal, output described the
One power supply signal and described second source signal；Described 3rd control module is used for described in described second control module output
Under the control of the first power supply signal, export described first control signal and described second control signal；
The magnitude of voltage of described first power supply signal is more than the magnitude of voltage of described second source signal, and described first power supply letter
Number equal with the absolute value of voltage of described second source signal；Described first power supply signal and described the in the display driving stage
The absolute value of voltage of two power supply signals is more than described first power supply signal driving the stage in touch-control and described second source signal
Absolute value of voltage.
In a kind of possible embodiment, in above-mentioned timesharing drive circuit provided in an embodiment of the present invention, described first
The control end of control module is used for inputting described first control signal, and first input end is used for inputting described first power supply signal,
Second input is used for inputting described second source signal；Described first control module is used for the control in described first control signal
Under system, described first power supply signal and described second source signal are exported respectively by the first outfan and the second outfan.
In a kind of possible embodiment, in above-mentioned timesharing drive circuit provided in an embodiment of the present invention, described first
Control module, including：First switch transistor and second switch transistor；Wherein,
The grid of described first switch transistor is used for inputting described first control signal, and source electrode is used for inputting described first
Power supply signal, drains for exporting described first power supply signal；
The grid of described second switch transistor is used for inputting described first control signal, and source electrode is used for inputting described second
Power supply signal, drains for exporting described second source signal.
In a kind of possible embodiment, in above-mentioned timesharing drive circuit provided in an embodiment of the present invention, described second
The control end of control module is used for inputting described second control signal, and first input end is used for inputting described first power supply signal,
Second input is used for inputting described second source signal, and the first outfan is connected with the control end of described 3rd control module；
Described second control module is used under the control of described second control signal, by described first outfan and the second outfan
Export described first power supply signal and described second source signal respectively.
In a kind of possible embodiment, in above-mentioned timesharing drive circuit provided in an embodiment of the present invention, described second
Control module, including：3rd switching transistor and the 4th switching transistor；Wherein,
The grid of described 3rd switching transistor is used for inputting described second control signal, and source electrode is used for inputting described first
Power supply signal, drains and is connected for exporting described first power supply signal and the control end with described 3rd control module；
The grid of described 4th switching transistor is used for inputting described second control signal, and source electrode is used for inputting described second
Power supply signal, drains for exporting described second source signal.
In a kind of possible embodiment, in above-mentioned timesharing drive circuit provided in an embodiment of the present invention, the described 3rd
The control end of control module is connected with the first outfan of described second control module, and first input end is used for inputting described first
Control signal, the second input is used for inputting described second control signal；Described 3rd control module is used in the described second control
Under the control of the first outfan of molding block, described first control signal is exported respectively by the first outfan and the second outfan
With described second control signal.
In a kind of possible embodiment, in above-mentioned timesharing drive circuit provided in an embodiment of the present invention, the described 3rd
Control module, including：5th switching transistor and the 6th switching transistor；Wherein,
The grid of described 5th switching transistor is connected with the first outfan of described second control module, and source electrode is used for defeated
Enter described first control signal, drain for exporting described first control signal；
The grid of described 6th switching transistor is connected with the first outfan of described second control module, and source electrode is used for defeated
Enter described second control signal, drain for exporting described second control signal.
In a kind of possible embodiment, in above-mentioned timesharing drive circuit provided in an embodiment of the present invention, the described 3rd
The control end of control module is defeated with the first of the second outfan of described first control module and described second control module respectively
Go out end to be connected, first input end is used for inputting described first control signal, the second input is used for inputting described second control letter
Number；Described 3rd control module is used for closing under the control of the second outfan of described first control module, described second
Under the control of the first outfan of control module, export described first respectively by the first outfan and the second outfan and control letter
Number and described second control signal.
In a kind of possible embodiment, in above-mentioned timesharing drive circuit provided in an embodiment of the present invention, the described 3rd
Control module, including：7th switching transistor and the 8th switching transistor；Wherein,
The grid of described 7th switching transistor the second outfan and described second with described first control module respectively
First outfan of control module is connected, and source electrode is used for inputting described first control signal, drains for exporting described first control
Signal processed；
The grid of described 8th switching transistor the second outfan and described second with described first control module respectively
First outfan of control module is connected, and source electrode is used for inputting described second control signal, drains for exporting described second control
Signal processed.
Embodiments provide a kind of display floater, drive electricity including above-mentioned timesharing provided in an embodiment of the present invention
Road.
The beneficial effect of the embodiment of the present invention includes：
Embodiments provide a kind of timesharing drive circuit and display floater, this timesharing drive circuit includes：First
Control module, the second control module and the 3rd control module；Wherein, in the display driving stage, the first control module is used for the
Under the control of one control signal, export the first power supply signal and second source signal；Drive stage, the second control module in touch-control
For, under the control of the second control signal, exporting the first power supply signal and second source signal；3rd control module is used for
Under the control of the first power supply signal of the second control module output, export the first control signal and the second control signal；First electricity
The magnitude of voltage of source signal is more than the magnitude of voltage of second source signal, and the first power supply signal is absolute with the voltage of second source signal
Value is equal；It is more than with the absolute value of voltage of second source signal in first power supply signal in display driving stage and drive rank in touch-control
First power supply signal of section and the absolute value of voltage of second source signal.
Specifically, the present invention can be implemented in the display driving stage by first, second, third control module and touch-control drives
The power supply signal of dynamic stage switching difference pressure reduction is so that the switching voltage exporting High Pressure Difference in the display driving stage is applied to show
Drive circuit；Stage output is driven to be applied to touch drive circuit compared with the switching voltage of low voltage difference in touch-control, so not only permissible
Reduce power consumption, be also prevented from the infringement that touch drive circuit is caused due to the switching voltage of High Pressure Difference.In addition, the present invention only needs
Want driving chip to drive the stage to export the power supply signal of different pressure reduction in the display driving stage with touch-control, do not need driving chip
There is provided extra power supply signal outfan it is possible to the gate switch voltage reaching touch-control with the display stage is able to time-sharing multiplex
Purpose.
Brief description
Fig. 1 is one of structural representation of timesharing drive circuit provided in an embodiment of the present invention；
Fig. 2 is one of concrete structure schematic diagram of timesharing drive circuit provided in an embodiment of the present invention；
Fig. 3 is the two of the structural representation of timesharing drive circuit provided in an embodiment of the present invention；
Fig. 4 is the two of the concrete structure schematic diagram of timesharing drive circuit provided in an embodiment of the present invention；
Fig. 5 is the working timing figure of timesharing drive circuit provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings, the specific embodiment to timesharing drive circuit provided in an embodiment of the present invention and display floater
It is described in detail.
Embodiments provide a kind of timesharing drive circuit, as shown in figure 1, can include：First control module 01,
Second control module 02 and the 3rd control module 03；Wherein,
In the display driving stage, the first control module 01 is used under the control of the first control signal EN1, output first electricity
Source signal VGH and second source signal VGL；Drive the stage in touch-control, the second control module 02 is used in the second control signal EN2
Control under, export the first power supply signal VGH and second source signal VGL；3rd control module 03 is used for controlling mould second
Under the control of the first power supply signal VGH of block 02 output, export the first control signal EN1 and the second control signal EN2；Can manage
Solution, the low and high level signal of the first control signal EN1 and the second control signal EN2, can respectively with display the driving stage
The first power supply signal VGH identical with second source signal VGL；
The magnitude of voltage of the first power supply signal VGH is more than the magnitude of voltage of second source signal VGL, and the first power supply signal VGH
Equal with the absolute value of voltage of second source signal VGL；The first power supply signal VGH in the display driving stage is believed with second source
The absolute value of voltage of number VGL is more than and drives the first power supply signal VGH in stage exhausted with the voltage of second source signal VGL in touch-control
To value.
The present invention applies in the above-mentioned timesharing drive circuit of example offer, can be realized by first, second, third control module
The stage is driven to switch the power supply signal of different pressure reduction so that exporting high pressure in the display driving stage with touch-control in the display driving stage
The switching voltage of difference is applied to display driver circuit；Stage output is driven to be applied to touch-control compared with the switching voltage of low voltage difference in touch-control
Drive circuit, so not only can reduce power consumption, be also prevented from touch drive circuit and caused due to the switching voltage of High Pressure Difference
Infringement, such as the decline of the characteristic of semiconductor of transistor in touch drive circuit.In addition, the present invention only needs to driving chip existing
The display driving stage drives the stage to export the power supply signal of different pressure reduction with touch-control, does not need driving chip to provide extra electricity
Source signal outfan is it is possible to the gate switch voltage reaching touch-control with the display stage is able to the purpose of time-sharing multiplex.
In the specific implementation, in above-mentioned timesharing drive circuit provided in an embodiment of the present invention, as shown in figure 1, the first control
The control end of module 01 be used for input the first control signal EN1, first input end be used for input the first power supply signal VGH, second
Input is used for inputting second source signal VGL；First control module 01 is used under the control of the first control signal EN1, leads to
Cross the first outfan VGHO1 and the second outfan VGLO1 and export the first power supply signal VGH and second source signal VGL respectively.Tool
Body ground, the first control module has a control end, two inputs and two outfans, thus in the display driving stage first
Control module can turn under the control of the first control signal, exports first respectively by the first outfan and the second outfan
Power supply signal and second source signal, and then realize the switching voltage signal in display driving stage output High Pressure Difference.
In the specific implementation, in above-mentioned timesharing drive circuit provided in an embodiment of the present invention, as shown in Fig. 2 the first control
Module 01 can include：First switch transistor T1 and second switch transistor T2；Wherein, the grid of first switch transistor T1
For inputting the first control signal EN1, source electrode is used for input the first power supply signal VGH, drains for exporting the first power supply signal
VGH；The grid of second switch transistor T2 is used for input the first control signal EN1, and source electrode is used for inputting second source signal
VGL, drains for exporting second source signal VGL.Specifically, first switch transistor can be in the control of the first control signal
Lower conducting, the first power supply signal that source electrode inputs can be exported by the first switch transistor of conducting by drain electrode；Second switch
Transistor can turn under the control of the first control signal, the second switch transistor of conducting source electrode can be inputted second
Power supply signal is exported by drain electrode.
In the specific implementation, in above-mentioned timesharing drive circuit provided in an embodiment of the present invention, as shown in figure 1, the second control
The control end of module 02 be used for input the second control signal EN2, first input end be used for input the first power supply signal VGH, second
Input is used for inputting second source signal VGL, and the first outfan is connected with the control end of the 3rd control module 03；Second control
Module 02 is used under the control of the second control signal EN2, by the first outfan VGHO2 and the second outfan VGLO2 respectively
Export the first power supply signal VGH and second source signal VGL.Specifically, the second control module have a control end, two defeated
Enter end and two outfans, thus driving stage second control module can lead under the control of the second control signal in touch-control
Logical, the first power supply signal and second source signal are exported respectively by the first outfan and the second outfan.This stage drives core
Piece provides the first power supply signal and the second source signal of low voltage difference, therefore drives the stage in touch-control, by the timesharing of the present invention
Drive circuit can realize exporting the first power supply signal and the second source signal of low voltage difference, and then the first power supply by low voltage difference
Signal and second source signal are applied to touch drive circuit, as the switching voltage signal of each transistor；Other 3rd control
Module can turn under the control of the first power supply signal of the second control module output, and output the first control signal and second is controlled
Signal processed is used for display driver circuit.Drive the stage in touch-control, display floater is used for the shift register drive circuit of display
Need a malleation and negative pressure to support, therefore touch-control drive the output of stage the 3rd control module the first control signal and
Second control signal is displayed for the shift-register circuit in drive circuit, thus maintaining touch-control to drive stage display
The normal display of picture.
In the specific implementation, in above-mentioned timesharing drive circuit provided in an embodiment of the present invention, as shown in Fig. 2 the second control
Module 02 can include：3rd switching transistor T3 and the 4th switching transistor T4；Wherein, the grid of the 3rd switching transistor T3
For inputting the second control signal EN2, source electrode is used for input the first power supply signal VGH, drains for exporting the first power supply signal
The VGH and control end with the 3rd control module 03 is connected；The grid of the 4th switching transistor T4 is used for input the second control signal
EN2, source electrode is used for inputting second source signal VGL, drains for exporting second source signal VGL.Specifically, the 3rd switch is brilliant
Body pipe can turn under the control of the second control signal, the first electricity that source electrode can be inputted by the 3rd switching transistor of conducting
Source signal is exported by drain electrode；4th switching transistor can turn under the control of the second control signal, and the 4th of conducting opens
Close transistor the second source signal that source electrode inputs can be exported by drain electrode.
In the specific implementation, in above-mentioned timesharing drive circuit provided in an embodiment of the present invention, as shown in figure 1, the 3rd control
The control end of module 03 is connected with the first outfan VGHO2 of the second control module 02, and first input end is used for input first control
Signal EN1 processed, the second input is used for input the second control signal EN2；3rd control module 03 is used in the second control module
Under 02 control of the first outfan, the first control letter is exported respectively by the first outfan VGHO3 and the second outfan VGLO3
Number EN1 and the second control signal EN2.Specifically, drive stage the 3rd control module the first of the second control module in touch-control
Turn under the control of the first power supply signal of outfan output, and then output the first control signal and the second control signal are used for showing
Show the shift-register circuit in drive circuit, maintain the normal display that touch-control drives stage display picture.
In the specific implementation, in above-mentioned timesharing drive circuit provided in an embodiment of the present invention, as shown in Fig. 2 the 3rd control
Module 03 can include：5th switching transistor T5 and the 6th switching transistor T6；Wherein, the grid of the 5th switching transistor T5
It is connected with the first outfan VGHO2 of the second control module 02, source electrode is used for input the first control signal EN1, drains for defeated
Go out the first control signal EN1；First outfan VGHO2 phase of the grid of the 6th switching transistor T6 and the second control module 02
Even, source electrode is used for input the second control signal EN2, drains for exporting the second control signal EN2.Specifically, the 5th switch is brilliant
Body pipe can turn under the control of the first power supply signal of the first outfan output of the second control module, and the 5th of conducting opens
Close transistor the first control signal that source electrode inputs can be exported by drain electrode；6th switching transistor can be in the second control
Turn under the control of the first power supply signal of the first outfan output of module, the 6th switching transistor of conducting can be by source electrode
Second control signal of input is exported by drain electrode.
In the specific implementation, in above-mentioned timesharing drive circuit provided in an embodiment of the present invention, as shown in figure 3, the 3rd control
The control end of module 03 is exported with the second outfan VGLO1 of the first control module 01 and the first of the second control module 02 respectively
End VGHO2 is connected, and first input end is used for input the first control signal EN1, and the second input is used for input the second control signal
EN2；3rd control module 03 is used for closing under the control of the second outfan VGLO1 of the first control module 01, in the second control
Under the control of the first outfan VGHO2 of molding block 02, defeated respectively by the first outfan VGHO3 and the second outfan VGLO3
Go out the first control signal EN1 and the second control signal EN2.Specifically, can be the in display driving stage the 3rd control module
Close under the control of second source signal of the second outfan output of one control module, prevent leakage current from flowing into display floater；
Drive stage the 3rd control module can open under controlling in the first power supply signal of the second control module output in touch-control, thus
Stage output the first control signal and the second control signal is driven to be used for the shift register electricity in display driver circuit in touch-control
Road, maintains the normal display that touch-control drives stage display picture.
In the specific implementation, in above-mentioned timesharing drive circuit provided in an embodiment of the present invention, as shown in figure 4, the 3rd control
Module 03 can include：7th switching transistor T7 and the 8th switching transistor T8；Wherein, the grid of the 7th switching transistor T7
It is connected with the second outfan VGLO1 of the first control module 01 and the first outfan VGHO2 of the second control module 02 respectively, source
Pole is used for input the first control signal EN1, drains for exporting the first control signal EN1；The grid of the 8th switching transistor T8
It is connected with the second outfan VGLO1 of the first control module 01 and the first outfan VGHO2 of the second control module 02 respectively, source
Pole is used for input the second control signal EN2, drains for exporting the second control signal EN2.Specifically, in the display driving stage,
7th switching transistor and the 8th switching transistor can be in the second source letters of the second outfan output of the first control module
Number control under close, prevent leakage current flow into display floater；Drive stage, the 7th switching transistor and the 8th switch in touch-control
Transistor can be opened under the first power supply signal of the first outfan output of the second control module controls, thus exporting respectively
First control signal and the second control signal, for the shift-register circuit in display driver circuit, maintain touch-control and drive rank
The normal display of section display picture.
It should be noted that the switching transistor mentioned in the above embodiment of the present invention and driving transistor can be thin film
Transistor (TFT, Thin Film Transistor) or metal oxide semiconductor field effect tube (MOS, Metal
Oxide Semiconductor), here does not limit.In being embodied as, the source electrode of these transistors and drain electrode can be mutual
Change, do not do concrete differentiation.Illustrate when describing specific embodiment taking thin film transistor (TFT) as a example.
With reference to timesharing drive circuit provided in an embodiment of the present invention and work schedule to provided in an embodiment of the present invention
The work process of timesharing drive circuit is described in detail.With shown in timesharing drive circuit circuit as shown in Figure 4 and Fig. 5
The working timing figure of Fig. 4, is described to the work process of timesharing drive circuit provided in an embodiment of the present invention.Specifically, under
State in description and represent high level signal with 1,0 expression low level signal.
In the display driving stage i.e. in display stage, EN1=1, EN2=0.Due to EN1=1, therefore first switch is brilliant
Body pipe T1 and second switch transistor T2 conducting；First power supply signal VGH is passed through first by the first switch transistor T1 of conducting
Outfan VGHO1 exports；It is defeated that second source signal VGL is passed through the second outfan VGLO1 by the second switch transistor T2 of conducting
Go out；The first power supply signal VGH that this stage driving chip provides and second source signal VGL is the signal of High Pressure Difference, such as the
One power supply signal VGH is+10V, and second source signal VGL is -10V；Therefore it is used for display driver circuit in the display driving stage
Switching voltage signal be High Pressure Difference power supply signal, so can ensure that the display effect of display picture.In addition, second switch
The second source signal VGL of transistor T2 output can close the 7th switching transistor T7 and the 8th switching transistor T8, and then
Prevent leakage current from flowing into display floater.
Drive the stage in touch-control i.e. in touch stage, EN1=0, EN2=1.Due to EN2=1, the therefore the 3rd switch crystal
Pipe T3 and the conducting of the 4th switching transistor T4；It is defeated that first power supply signal VGH is passed through first by the 3rd switching transistor T3 of conducting
Go out to hold VGHO2 to export；Second source signal VGL is passed through the second outfan VGLO2 output by the 4th switching transistor T4 of conducting；
The first power supply signal VGH that this stage driving chip provides and second source signal VGL is the signal of low voltage difference, the such as first electricity
Source signal VGH is+6V, and second source signal VGL is -6V；Therefore the stage is driven to be used for the switch of touch drive circuit in touch-control
Voltage signal is the power supply signal of low voltage difference, so not only can reduce power consumption, be also prevented from touch drive circuit due to height
The infringement that the switching voltage of pressure reduction causes.In addition, the first power supply signal VGH of the 3rd switching transistor T3 output can make the 7th
Switching transistor T7 and the conducting of the 8th switching transistor T8, the 7th switching transistor T7 of conducting and the 8th switching transistor T8 are divided
Do not export the shift-register circuit that the first control signal EN1 and the second control signal EN2 are used in display driver circuit, maintain
Drive the normal display of stage display picture in touch-control.
Based on same inventive concept, embodiments provide a kind of display floater, provide including the embodiment of the present invention
Above-mentioned timesharing drive circuit.This display floater can apply to mobile phone, panel computer, television set, display, notebook electricity
Any product with display function such as brain, DPF, navigator or part.Principle due to this display floater solve problem
Similar to timesharing drive circuit, the enforcement of therefore this display floater may refer to the enforcement of above-mentioned timesharing drive circuit, repeats it
Place repeats no more.
Embodiments provide a kind of timesharing drive circuit and display floater, this timesharing drive circuit includes：First
Control module, the second control module and the 3rd control module；Wherein, in the display driving stage, the first control module is used for the
Under the control of one control signal, export the first power supply signal and second source signal；Drive stage, the second control module in touch-control
For, under the control of the second control signal, exporting the first power supply signal and second source signal；3rd control module is used for
Under the control of the first power supply signal of the second control module output, export the first control signal and the second control signal；First electricity
The magnitude of voltage of source signal is more than the magnitude of voltage of second source signal, and the first power supply signal is absolute with the voltage of second source signal
Value is equal；It is more than with the absolute value of voltage of second source signal in first power supply signal in display driving stage and drive rank in touch-control
First power supply signal of section and the absolute value of voltage of second source signal.
Specifically, the present invention can be implemented in the display driving stage by first, second, third control module and touch-control drives
The power supply signal of dynamic stage switching difference pressure reduction is so that the switching voltage exporting High Pressure Difference in the display driving stage is applied to show
Drive circuit；Stage output is driven to be applied to touch drive circuit compared with the switching voltage of low voltage difference in touch-control, so not only permissible
Reduce power consumption, be also prevented from the infringement that touch drive circuit is caused due to the switching voltage of High Pressure Difference.In addition, the present invention only needs
Want driving chip to drive the stage to export the power supply signal of different pressure reduction in the display driving stage with touch-control, do not need driving chip
There is provided extra power supply signal outfan it is possible to the gate switch voltage reaching touch-control with the display stage is able to time-sharing multiplex
Purpose.
Obviously, those skilled in the art can carry out the various changes and modification essence without deviating from the present invention to the present invention
God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprise these changes and modification.
Claims (10)
1. a kind of timesharing drive circuit is it is characterised in that include：First control module, the second control module and the 3rd control mould
Block；Wherein,
In the display driving stage, described first control module is used under the control of the first control signal, output the first power supply letter
Number and second source signal；
Drive the stage in touch-control, described second control module is used under the control of the second control signal, described first electricity of output
Source signal and described second source signal；Described 3rd control module is used for described the first of described second control module output
Under the control of power supply signal, export described first control signal and described second control signal；
The magnitude of voltage of described first power supply signal be more than described second source signal magnitude of voltage, and described first power supply signal with
The absolute value of voltage of described second source signal is equal；Described first power supply signal and described second electricity in the display driving stage
The absolute value of voltage of source signal is more than the electricity of described first power supply signal driving the stage in touch-control and described second source signal
Pressure absolute value.
2. timesharing drive circuit as claimed in claim 1 is it is characterised in that the control end of described first control module is for defeated
Enter described first control signal, first input end is used for inputting described first power supply signal, the second input is used for inputting described
Second source signal；Described first control module is used under the control of described first control signal, by the first outfan and
Second outfan exports described first power supply signal and described second source signal respectively.
3. timesharing drive circuit as claimed in claim 2 is it is characterised in that described first control module, including：First switch
Transistor and second switch transistor；Wherein,
The grid of described first switch transistor is used for inputting described first control signal, and source electrode is used for inputting described first power supply
Signal, drains for exporting described first power supply signal；
The grid of described second switch transistor is used for inputting described first control signal, and source electrode is used for inputting described second source
Signal, drains for exporting described second source signal.
4. timesharing drive circuit as claimed in claim 1 is it is characterised in that the control end of described second control module is for defeated
Enter described second control signal, first input end is used for inputting described first power supply signal, the second input is used for inputting described
Second source signal, the first outfan is connected with the control end of described 3rd control module；Described second control module is used for
Under the control of described second control signal, described first power supply letter is exported respectively by described first outfan and the second outfan
Number and described second source signal.
5. timesharing drive circuit as claimed in claim 4 is it is characterised in that described second control module, including：3rd switch
Transistor and the 4th switching transistor；Wherein,
The grid of described 3rd switching transistor is used for inputting described second control signal, and source electrode is used for inputting described first power supply
Signal, drains and is connected for exporting described first power supply signal and the control end with described 3rd control module；
The grid of described 4th switching transistor is used for inputting described second control signal, and source electrode is used for inputting described second source
Signal, drains for exporting described second source signal.
6. the timesharing drive circuit as described in any one of claim 1-5 is it is characterised in that the control of described 3rd control module
End is connected with the first outfan of described second control module, and first input end is used for inputting described first control signal, and second
Input is used for inputting described second control signal；Described 3rd control module is used for first defeated in described second control module
Go out under the control at end, described first control signal and described second control are exported respectively by the first outfan and the second outfan
Signal.
7. timesharing drive circuit as claimed in claim 6 is it is characterised in that described 3rd control module, including：5th switch
Transistor and the 6th switching transistor；Wherein,
The grid of described 5th switching transistor is connected with the first outfan of described second control module, and source electrode is used for inputting institute
State the first control signal, drain for exporting described first control signal；
The grid of described 6th switching transistor is connected with the first outfan of described second control module, and source electrode is used for inputting institute
State the second control signal, drain for exporting described second control signal.
8. the timesharing drive circuit as described in any one of claim 1-5 is it is characterised in that the control of described 3rd control module
End is connected with the second outfan of described first control module and the first outfan of described second control module respectively, and first is defeated
Enter end to be used for inputting described first control signal, the second input is used for inputting described second control signal；Described 3rd control
Module is used for closing under the control of the second outfan of described first control module, and first in described second control module is defeated
Go out under the control at end, described first control signal and described second control are exported respectively by the first outfan and the second outfan
Signal.
9. timesharing drive circuit as claimed in claim 8 is it is characterised in that described 3rd control module, including：7th switch
Transistor and the 8th switching transistor；Wherein,
The second outfan and described second control with described first control module respectively of the grid of described 7th switching transistor
First outfan of module is connected, and source electrode is used for inputting described first control signal, drains and controls letter for exporting described first
Number；
The second outfan and described second control with described first control module respectively of the grid of described 8th switching transistor
First outfan of module is connected, and source electrode is used for inputting described second control signal, drains and controls letter for exporting described second
Number.
10. a kind of display floater is it is characterised in that include the timesharing drive circuit as described in any one of claim 1-9.
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| CN201610829422.9A CN106406614B (en) | 2016-09-18 | 2016-09-18 | A kind of timesharing driving circuit and display panel |
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| CN201610829422.9A CN106406614B (en) | 2016-09-18 | 2016-09-18 | A kind of timesharing driving circuit and display panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108766384A (en) * | 2018-08-22 | 2018-11-06 | 苏州华芯微电子股份有限公司 | A kind of device and method for realizing the LCD display ports with boosting and GPIO multiplexings |
| CN111968588A (en) * | 2020-07-31 | 2020-11-20 | 南京中电熊猫平板显示科技有限公司 | Multiplexing display panel |
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| CN104049796A (en) * | 2014-05-19 | 2014-09-17 | 京东方科技集团股份有限公司 | Touch display screen and time-sharing drive method thereof |
| CN104503632A (en) * | 2015-01-26 | 2015-04-08 | 京东方科技集团股份有限公司 | Buffer unit, touch drive circuit, display device and drive method of display device |
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| EP2453339A1 (en) * | 2009-07-08 | 2012-05-16 | Inferpoint Systems Limited | Touch-control flat panel display |
| CN103440847A (en) * | 2013-08-30 | 2013-12-11 | 京东方科技集团股份有限公司 | Drive circuit, method, shifting register, pixel unit and display unit |
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| CN111968588B (en) * | 2020-07-31 | 2022-05-03 | 南京京东方显示技术有限公司 | Multiplexing display panel |
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| Publication number | Publication date |
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| CN106406614B (en) | 2019-03-15 |
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