CN106910451A - The driving method of gate driving circuit and gate driving circuit - Google Patents
The driving method of gate driving circuit and gate driving circuit Download PDFInfo
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- CN106910451A CN106910451A CN201710295905.XA CN201710295905A CN106910451A CN 106910451 A CN106910451 A CN 106910451A CN 201710295905 A CN201710295905 A CN 201710295905A CN 106910451 A CN106910451 A CN 106910451A
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Classifications
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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
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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
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0267—Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Shift Register Type Memory (AREA)
Abstract
The embodiment of the invention discloses a kind of gate driving circuit and the driving method of gate driving circuit, wherein gate driving circuit includes：The driver element of multiple cascade, every grade of driver element includes pre-charge module, pull-up module, reseting module, drop-down control module and drop-down module；Pull-up module is used to export scanning signal in the first output end of driver element；Reseting module is used to drag down the current potential of control node；Wherein, the first control signal input of adjacent two-stage drive unit is input into opposite signal；Drop-down module is used for the control node of drop-down level driver element and the current potential of the first output end；3rd output end of drop-down module is electrically connected with the control node of previous stage driver element, 4th output end of drop-down module is electrically connected with the first output end of previous stage driver element, and drop-down module is additionally operable to the control node of drop-down previous stage driver element and the current potential of the first output end.Technical scheme provided in an embodiment of the present invention, can save circuit element, reduce power consumption.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of gate driving circuit and gate driving circuit driving side
Method.
Background technology
Display panel needs to provide scanning signal to be scanned display line by line in display process, and scanning signal is typically by grid
Pole drive circuit is provided.
Gate driving circuit generally comprises multiple drive power unit, such as shift register including multi-stage cascade.Each drive
Output end one gate line of correspondence of moving cell, driver element provides scanning signal to its corresponding gate line step by step.Existing drive
Pull system under designing two sets in moving cell, respectively first time pull system and second time pull system, first time pull system and
The circuit element of two times pull system is identical, this two sets lower pull system alternations.For example in the first frame in, the first of driver element
Lower pull system work, second time pull system does not work；In the second frame in, second time pull system of driver element works, under first
Pull system does not work；In the 3rd frame in, first time pull system of driver element works, and second time pull system does not work, and so follows
Ring replaces.Make first time pull system of driver element and second time pull system alternation, improve the drop-down system lifetim, enter
And improve the service life of whole circuit.However, can thus use more circuit element, and the power consumption of circuit also to compare
Greatly.
The content of the invention
The present invention provides the driving method of a kind of gate driving circuit and gate driving circuit, to realize simplifying raster data model
The structure of circuit, saves circuit area, reduces power consumption.
In a first aspect, the embodiment of the invention provides a kind of gate driving circuit, the gate driving circuit includes：Multiple levels
The driver element of connection, every grade of driver element includes pre-charge module, pull-up module, reseting module, drop-down control module
With drop-down module；
The output end of the pre-charge module is electrically connected with control node, for being pre-charged to the control node；
It is described pull-up module control end electrically connect with the control node, it is described pull up module input and the drive
The first clock signal input terminal electrical connection of moving cell, first output end and the first of the driver element of the pull-up module
Output end is electrically connected, and scanning signal is exported for the first output end in the driver element；
The output end of the reseting module is electrically connected with the control node, the current potential for dragging down the control node；
First control end of the drop-down control module is electrically connected with the control node, and the of the drop-down control module
Two control ends are electrically connected with the first control signal input of the driver element, the input of the drop-down control module and institute
State the first level signal input electrical connection of driver element；Wherein, the first control signal input of adjacent two-stage drive unit
The opposite signal of end input；
The control end of the drop-down module is electrically connected with the output end of the drop-down control module, the drop-down module it is defeated
Enter end to be electrically connected with the second electrical level signal input part of the driver element, the first output end and the control of the drop-down module
Node processed electrical connection, the second output end of the drop-down module is electrically connected with the first output end of the driver element, it is described under
Drawing-die block is used for the control node of drop-down level driver element and the current potential of the first output end；
3rd output end of the drop-down module is electrically connected with the control node of previous stage driver element, the drop-down module
The 4th output end electrically connected with the first output end of previous stage driver element, the drop-down module is additionally operable to drop-down previous stage and drives
The current potential of the control node of moving cell and the first output end.
Second aspect, the embodiment of the present invention additionally provides a kind of driving method of gate driving circuit, wherein, the grid
Drive circuit includes：The driver elements of multiple cascade, every grade of driver element includes pre-charge module, pull-up module, multiple
Position module, drop-down control module and drop-down module；
The output end of the pre-charge module is electrically connected with control node；
It is described pull-up module control end electrically connect with the control node, it is described pull up module input and the drive
The first clock signal input terminal electrical connection of moving cell, first output end and the first of the driver element of the pull-up module
Output end is electrically connected；
The output end of the reseting module is electrically connected with the control node；
First control end of the drop-down control module is electrically connected with the control node, and the of the drop-down control module
Two control ends are electrically connected with the first control signal input of the driver element, the input of the drop-down control module and institute
State the first level signal input electrical connection of driver element；Wherein, the first control signal input of adjacent two-stage drive unit
The opposite signal of end input；
The control end of the drop-down module is electrically connected with the output end of the drop-down control module, the drop-down module it is defeated
Enter end to be electrically connected with the second electrical level signal input part of the driver element, the first output end and the control of the drop-down module
Node electrical connection processed, the second output end of the drop-down module is electrically connected with the first output end of the driver element；
3rd output end of the drop-down module is electrically connected with the control node of previous stage driver element, the drop-down module
The 4th output end electrically connected with the first output end of previous stage driver element；
The driving method includes：
Pre-charging stage, controls the pre-charge module to draw high the current potential of the control node；
In the pull-up stage, the pull-up module is controlled to export scanning signal in this grade of the first output end of driver element；
Reseting stage, controls the pull-up module to stop output scanning signal, and drag down the current potential of the control node；
The drop-down maintenance stage, according to the first control signal that first control signal input is input into, under control is described
The control node of drop-down level driver element of drawing-die block and the current potential of the first output end, and low level state is maintained, and control
The control node of the drop-down upper level driver element of drop-down module and the current potential of the first output end, and maintain low level shape
State；
According to the second control signal that first control signal input is input into, it is stopped.
Technical scheme provided in an embodiment of the present invention, drop-down module not only can be with the drop-down control node of level driver element
With the current potential of the first output end, but also can be with the control node P of drop-down previous stage driver element and the current potential of the first output end.
That is, the current potential of the control node of this grade of driver element and the first output end can be by this grade of drop-down module of driver element
Drop-down module with next stage driver element is alternately pulled down to low potential, and maintains low potential.Relative to prior art, protecting
On the basis of card circuit lifetime, every grade of driver element only needs to set a set of lower pull system (drop-down module), you can under realization
Drawing is acted on, and can save the area of circuit, reduces power consumption.
Brief description of the drawings
Fig. 1 is a kind of circuit structure diagram of gate driving circuit provided in an embodiment of the present invention；
Fig. 2A is the circuit structure diagram of another gate driving circuit provided in an embodiment of the present invention；
Fig. 2 B are the circuit structure diagrams of another gate driving circuit provided in an embodiment of the present invention；
Fig. 2 C are the circuit structure diagrams of another gate driving circuit provided in an embodiment of the present invention；
Fig. 3 A are the circuit structure diagrams of another gate driving circuit provided in an embodiment of the present invention；
Fig. 3 B are a kind of driver' s timing figures provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part rather than entire infrastructure related to the present invention is illustrate only in description, accompanying drawing.
Fig. 1 is a kind of circuit structure diagram of gate driving circuit provided in an embodiment of the present invention.Referring to Fig. 1, the grid drives
Dynamic circuit includes：
The driver element of multiple cascade, every grade of driver element includes pre-charge module 11, pull-up module 12, reseting module
13rd, drop-down control module 14 and drop-down module 15；
The output end of pre-charge module 11 is electrically connected with control node P, for being pre-charged to control node P；
The control end for pulling up module 12 electrically connect with control node P, the input of pull-up module 12 and the of driver element
One clock signal input terminal CK1 is electrically connected, and pulls up the first output end of module 12 and the first output end GOUT electricity of driver element
Connection, scanning signal is exported for the first output end GOUT in driver element；
The output end of reseting module 13 is electrically connected with control node, the current potential for dragging down control node；
First control end of drop-down control module 14 is electrically connected with control node P, the second control of drop-down control module 14
End electrically connects with the first control signal input VIN of driver element, and the first input end of drop-down control module 14 is single with driving
The first level signal input VSQ electrical connections of unit；Wherein, the first control signal input VIN of adjacent two-stage drive unit
The opposite signal of input；
The control end of drop-down module 15 is electrically connected with the output end of drop-down control module 14, input and the drive of drop-down module
The second electrical level signal input part VGL electrical connections of moving cell, the first output terminals A 1 and the control node P of drop-down module 15 are electrically connected
Connect, the second output terminals A 2 of drop-down module 15 is electrically connected with the first output end GOUT of driver element, under drop-down module 15 is used for
Draw this grade of current potential of the control node P and the first output end GOUT of driver element；
3rd output terminals A 3 of drop-down module 15 is electrically connected with the control node P of previous stage driver element, drop-down module 15
The 4th output terminals A 4 electrically connected with the first output end GOUT of previous stage driver element, the drop-down module 15 is additionally operable to drop-down
The current potential of the control node P of previous stage driver element and the first output end GOUT.
Technical scheme provided in an embodiment of the present invention, drop-down module 15 not only can be with the drop-down control section of level driver element
The current potential of point P and the first output end GOUT, but also can be with the control node P of drop-down previous stage driver element and the first output end
The current potential of GOUT.That is, the current potential of the control node of this grade of driver element and the first output end can be driven by this level it is single
The drop-down module of unit and the drop-down module of next stage driver element are alternately pulled down to low potential, and maintain low potential.Relative to
Prior art, on the basis of circuit lifetime is ensured, every grade of driver element only needs to set a set of lower pull system (lower drawing-die
Block), you can drop-down effect is realized, the area of circuit can be saved, reduce power consumption.
Fig. 2A is the circuit structure diagram of another gate driving circuit provided in an embodiment of the present invention.Referring to Fig. 2A, in Fig. 1
On the basis of shown gate driving circuit, in gate driving circuit provided in an embodiment of the present invention, pull-up module 12 also includes
Second output end, drop-down module 15 also includes the 5th output terminals A 5 and the 6th output terminals A 6；
The of second output end of the 5th output terminals A 5 of drop-down module 15 and pull-up module 12 and this grade of driver element
Two output end ZOUT are electrically connected, and drop-down module 15 is additionally operable to the drop-down current potential of the second output end ZOUT of level driver element；
6th output terminals A 6 of drop-down module 15 is electrically connected with the second output end ZOUT of previous stage driver element, lower drawing-die
Block 15 is additionally operable to the current potential of the second output end ZOUT of drop-down previous stage driver element.
Fig. 2 B are the circuit structure diagrams of another gate driving circuit provided in an embodiment of the present invention.In grid shown in Fig. 2A
On the basis of drive circuit, gate driving circuit provided in an embodiment of the present invention, the input GN and preceding N of pre-charge module 11
The first output end GOUT electrical connections of level driver element, the of the control end ZN of pre-charge module 11 and preceding N grades of driver element
Two output end ZOUT are electrically connected；Wherein, N is positive integer.That is, this grade of pre-charge module of driver element 11 can basis
The signal of the first output end GOUT and the second output end ZOUT output of N poles driver element is carried out to this grade of control node P before
Precharge.Such as this grade pre-charge module of driver element 11 can be according to of the driver element of two-stage before this grade of driver element
The signal of one output end GOUT and the second output end ZOUT outputs, the control node P to this grade of driver element enters line precharge.This
It is pre- that level drives pre-charge module 11 to be carried out to the control node P of this grade of driver element according to the signal preceding what driver element is exported
Charge, be controlled without using outside signal, save external control signal, reduces cost.
Wherein, pre-charge module 11 may include the first transistor M1, the control end and pre-charge module of the first transistor M1
11 control end ZN electrical connections, first pole of the first transistor M1 electrically connects with the input GN of pre-charge module 11, and first is brilliant
Second pole of body pipe M1 electrically connects with the output end of pre-charge module 11.
With continued reference to Fig. 2 B, in gate driving circuit provided in an embodiment of the present invention, reseting module 13 includes input
With control end GM；The control end GM of reseting module 13 is electrically connected with the first output end GOUT of rear M grades of driver element, reset mould
The input of block 13 is electrically connected with the second clock signal input part CK2 of this grade of driver element, and wherein M is positive integer.Namely
Say, the signal that this grade of reseting module of driver element 13 can be exported according to the first output end GOUT of M poles driver element after the
To drag down this grade of current potential of control node P.For example after this grade reseting module of driver element 13 can be according to this grade of driver element
The signal of the first output end GOUT outputs of the driver element of two-stage, drags down this grade of current potential of the control node P of driver element.This
The reseting module 13 of level driver element signal of the output end of what driver element first output according to after drags down the electricity of control node P
Position, is controlled without using outside signal, saves external control signal, reduces cost.
Further, reseting module 13 also includes transistor seconds M2；
The grid of transistor seconds M2 is electrically connected with the control end GM of reseting module 13, first pole of transistor seconds M2 with
The input electrical connection of reseting module 13, namely electrically connected with the second clock signal input part CK2 of this grade of driver element, second
Second pole of transistor electrically connects with the output end of reseting module 13.Reseting module 13 can be according to the letter of the input of its control end
Number turn-on and turn-off, when reseting module 13 is turned on, are inputted the signal transmission of end input to control node P, with to control
Node P is resetted, and the low level signal for being for example inputted end input is transmitted to control node P, drags down the electricity of control node P
Position.
In embodiments of the present invention, pull-up module 12 may include third transistor M3, the 4th transistor M4 and the first electric capacity
C1。
The grid of third transistor M3 with pull-up module 12 control end electrically connect, first pole of third transistor M3 with it is upper
The input electrical connection of drawing-die block 12, namely first pole of third transistor M3 is defeated with the first clock signal of this grade of driver element
Enter and hold CK1 to electrically connect, second pole of third transistor M3 electrically connects with the first output end of pull-up module 12；
The grid of the 4th transistor M4 with pull-up module 12 control end electrically connect, first pole of the 4th transistor M4 with it is upper
The input electrical connection of drawing-die block 12, namely the first pole and the driver element of the 4th transistor M4 the first clock signal input terminal
CK1 is electrically connected, and second pole of the 4th transistor M4 electrically connects with the second output end of pull-up module 12.
First pole of the first electric capacity C1 electrically connects with control node P, the second pole and this grade of driver element of the first electric capacity C1
The first output end GOUT electrical connection.
In embodiments of the present invention, drop-down control module 14 may include the 5th transistor M5, the 6th transistor M6 and the 7th
Transistor M7；
The grid of the 5th transistor M5 is electrically connected with the first control end of drop-down control module 14, the 5th crystal
First pole of pipe M5 electrically connects with the input of drop-down control module 14, the second pole and the drop-down control module of the 5th transistor M5
14 output end electrical connection；
The grid of the 6th transistor M6 and the first pole electrically connect with the second control end of drop-down control module 14, and the 6th is brilliant
Second pole of body pipe M6 electrically connects with the grid of the 7th transistor M7；
First pole of the 7th transistor M7 electrically connects with the second control end of drop-down control module 14, the 7th transistor M7's
Second pole electrically connects with the output end of drop-down control module 14.
Optionally, with continued reference to Fig. 2 B, in gate driving circuit provided in an embodiment of the present invention, drop-down module 15 can be wrapped
Include the 8th transistor M8, the 9th transistor M9, the tenth transistor M10, the 11st transistor M11, the tenth two-transistor M12 and
13 transistor M13；
The grid of the 8th transistor M8 is electrically connected with the control end of drop-down module 15, and first pole of the 8th transistor M8 is with
The input electrical connection of drawing-die block 15, second pole of the 8th transistor M8 electrically connects with the first output end of drop-down module 15；
The grid of the 9th transistor M9 is electrically connected with the control end of drop-down module 15, and first pole of the 9th transistor M9 is with
The input electrical connection of drawing-die block 15, second pole of the 9th transistor M9 electrically connects with the second output end of drop-down module 15；
The grid of the tenth transistor M10 is electrically connected with the control end of drop-down module 15, first pole of the tenth transistor M10 with
The input electrical connection of drop-down module 15, second pole of the tenth transistor M10 electrically connects with the 5th output end of drop-down module 15；
The grid of the 11st transistor M11 is electrically connected with the control end of drop-down module 15, and the first of the 11st transistor M11
Pole electrically connects with second pole of the 8th transistor M8, and second pole of the 11st transistor M11 and the 3rd of drop-down module 15 the exports
End electrical connection；
The grid of the tenth two-transistor M12 is electrically connected with the control end of drop-down module 15, and the first of the tenth two-transistor M12
Pole electrically connects with second pole of the 9th transistor M9, and second pole of the tenth two-transistor M12 and the 4th of drop-down module 15 the exports
End electrical connection；
The grid of the 13rd transistor M13 is electrically connected with the control end of drop-down module 15, and the first of the 13rd transistor M13
Pole electrically connects with second pole of the tenth transistor M10, and second pole of the 13rd transistor M13 and the 6th of drop-down module 15 the exports
End electrical connection.
Referring to Fig. 2 C, Fig. 2 C are the circuit structure diagrams of another gate driving circuit provided in an embodiment of the present invention.At this
In circuit, drop-down module 15 include the 8th transistor M8, the 9th transistor M9, the tenth transistor M10, the 11st transistor M11,
Tenth two-transistor M12 and the 13rd transistor M13；
The grid of the 8th transistor M8 is electrically connected with the control end of drop-down module 15, and first pole of the 8th transistor M8 is with
The input electrical connection of drawing-die block 15, second pole of the 8th transistor M8 electrically connects with the first output end of drop-down module 15；
The grid of the 9th transistor M9 is electrically connected with the control end of drop-down module 15, and first pole of the 9th transistor M9 is with
The input electrical connection of drawing-die block 15, second pole of the 9th transistor M9 electrically connects with the second output end of drop-down module 15；
The grid of the tenth transistor M10 is electrically connected with the control end of drop-down module 15, first pole of the tenth transistor M10 with
The input electrical connection of drop-down module 15, second pole of the tenth transistor M10 electrically connects with the 5th output end of drop-down module 15；
The grid of the 11st transistor M11 is electrically connected with the control end of drop-down module 15, and the first of the 11st transistor M11
Pole electrically connects with the input of drop-down module 15, second pole of the 11st transistor M11 and the 3rd output end of drop-down module 15
Electrical connection；
The grid of the tenth two-transistor M12 is electrically connected with the control end of drop-down module 15, and the first of the tenth two-transistor M12
Pole electrically connects with the input of drop-down module 15, second pole of the tenth two-transistor M12 and the 4th output end of drop-down module 15
Electrical connection；
The grid of the 13rd transistor is electrically connected with the control end of drop-down module 15, first pole of the 13rd transistor M13
Input with drop-down module 15 is electrically connected, and second pole of the 13rd transistor M13 and the 6th output end of drop-down module 15 are electric
Connection.
Fig. 3 A are provided in an embodiment of the present invention, and Fig. 3 B are a kind of driver' s timing figure provided in an embodiment of the present invention, the electricity
The circuit connection of the kth for showing level+1 grade of driver element of driver element and kth exemplary in road.Driven with kth level below single
Unit and+1 grade of driver element of kth are example, illustrate the course of work of gate driving circuit provided in an embodiment of the present invention, wherein, k
It is integer.Referring to Fig. 3 A and Fig. 3 B, CLK1 represents the clock of the first clock signal input terminal CK1 inputs of kth level driver element
Signal, CLK2 is first clock of+1 grade of driver element of second clock signal input part CK2 and kth of kth level driver element
The clock signal of signal input part CK1 inputs；CLK3 is input into for the second clock signal input part CK2 of+1 grade of driver element of kth
Clock signal.GN (k)/ZN (k) represents input GN and control end the ZN input of the pre-charge module 11 of kth level driver element
Signal, GOUT (k)/ZOUT (k) represents the first output end GOUT and the second output end ZOUT output of kth level driver element
Signal, GM (k) represents the signal of the control end GM inputs of the reseting module 13 of kth level driver element.PU1 represents that kth level drives
The current potential of the control node P1 of unit.GN (k+1)/ZN (k+1) represents the input of the pre-charge module 11 of+1 grade of driver element of kth
The signal of end GN and control end ZN inputs, GOUT (k+1)/ZOUT (k+1) represents first output end of+1 grade of driver element of kth
The signal of GOUT and the second output end ZOUT outputs, GM (k+1) represents the control end GM of the reseting module of+1 grade of driver element of kth
The signal of input.PU2 represents the current potential of the control node P2 of+1 grade of driver element of kth.First level signal input VSQ and
Two level signal input VGL input low level signals.First control signal input V1 of kth level driver element is input into low electricity
Ordinary mail number, the second control signal input V2 input high level signals of+1 grade of driver element of kth.
Exemplary, the first control signal input VIN input low level signals of kth level driver element ,+1 grade of drive of kth
First control signal input VIN input high level signals of moving cell.The input of the pre-charge module of kth level driver element
Electrically connected with first output end and the second output end of -2 grades of driver elements of kth respectively with control end.Kth level driver element is answered
First output end of+2 grades of driver elements of control end and kth of position module is electrically connected, and the kth level in the gate driving circuit drives
The course of work of unit may include such as the next stage：
First stage t1, also referred to as pre-charging stage, first output end of -2 grades of driver elements of kth and the second output end are exported
The equal input high level signal of control end ZN and input GN of high level signal, i.e. pre-charge module 11, the first transistor M1 leads
Logical, the high level signal of the first order input of the first transistor M1 is transmitted to control node by the first transistor M1 for turning on
P1, charges to control node P1, and control node P1 current potentials are changed into high level, and third transistor M3 and the 4th transistor M4 lead
Logical, the low level signal of the first clock signal input terminal CK1 inputs is transmitted to driver element by the third transistor M3 for turning on
The first output end GOUT, transmitted to the second output end ZOUT of driver element by the 4th transistor M4 for turning on, drive single
First output end GOUT and the second output end ZOUT the output low level signal of unit.
Second stage t2, also referred to as pulls up stage, the first clock signal input terminal CK1 input high level signals, the first clock
The high level signal of signal input part CK1 inputs is transmitted to the first output end of driver element by the third transistor M3 for turning on
GOUT, is transmitted to the second output end ZOUT of driver element by the 4th transistor M4 of conduction pipe, and the first of driver element is defeated
Go out to hold GOUT and the second output end ZOUT output high level signals.And due to the boot strap of the first electric capacity C1, control section
The current potential of point P1 will be raised.The high level current potential of control node P1 can be such that third transistor M3 and the 4th transistor M4 opens more
For abundant, the driving force of driver element is improve.
Phase III t3, also referred to as reseting stage, the first output end output high level signal of+2 grades of driver elements of kth, the
Two-transistor M2 is turned on.The first half cycle of the time period, second clock signal input part CK2 input high level signals, when second
The high level signal of clock signal input part CK2 inputs is transmitted to control node P1, control section by the transistor seconds M2 for turning on
The current potential of point P1 is high level.Third transistor M3 continues to turn on, the first clock signal input terminal CK1 input low level signals,
The low level signal of the first clock signal input terminal CK1 inputs is transmitted to the of driver element by the third transistor M3 of conducting
One output end GOUT, is transmitted to the second output end ZOUT of driver element by the 4th transistor M4 for turning on, driver element
First output end GOUT and the second output end ZOUT output low level signals, due to the boot strap of the first electric capacity C1, control section
The current potential of point P1 will be pulled low to a certain extent.The later half cycle of the time period, second clock signal input part CK2 inputs are low
Level signal, the current potential of control node P1 is pulled low, and the current potential of control node P1 is low level.Third transistor M3 and the 4th is brilliant
Body pipe M4 is closed, the first output end GOUT and the second output end ZOUT the output low level signal of driver element.
Fourth stage t4, also referred to as drop-down maintenance stage, the control node P2 in+1 grade of driver element of kth is low level, kth
The 5th transistor M5 in+1 grade of driver element is closed.Because the first control signal input V2 of+1 grade of driver element of kth is defeated
Enter high level signal, the 6th transistor M6 and the 7th transistor the M7 conducting of+1 grade of driver element of kth, the of the 7th transistor M7
Two poles export high level signal, the 8th transistor M8, the 9th transistor in high level signal control+1 grade of driver element of kth
M9, the tenth transistor M10, the 11st transistor M11, the tenth two-transistor M12 and the 13rd transistor M13 conducting ,+1 grade of kth
Eightth transistor M8, nineth crystalline substance of the low level signal of the second electrical level signal input part VGL inputs of driver element by conducting
Body pipe M9 and the tenth transistor M10 are transmitted separately to this grade of control node P2 of driver element, the first output end GOUT and second
Output end ZOUT, drags down the current potential of this grade of control node P2 of driver element, the first output end GOUT and the second output end ZOUT.
+ 1 grade of driver element of kth second electrical level signal input part input low level signal by turn on the 11st transistor M11,
Tenth two-transistor M12 and the 13rd transistor M13, is transmitted separately to control node P1, first output of kth level driver element
End GOUT and the second output end ZOUT, drags down control node P1, the first output end GOUT and second output of kth level driver element
The current potential of ZOUT is held, and maintains control node P1, the first output end GOUT and the second output end GOUT of kth level driver element
Current potential is low level.Above description, is such as not particularly limited, and driver element refers to kth level driver element.
It should be noted that+1 grade of drive of the signal of the first control signal input V1 inputs of kth level driver element and kth
Moving cell the first control signal input V2 input signal conversely, and a frame in keep it is constant, between frames
Cycle alternation.For example in the first frame in, the first control signal input V1 input high level signals of kth level driver element, kth
+ 1 grade of first control signal input V2 input low level signal of driver element, in the second frame in, the of kth level driver element
One control signal input V1 input low level signals, the first control signal input V2 inputs of+1 grade of driver element of kth are high
Level signal；In the 3rd frame in, the first control signal input V1 input high level signals of kth level driver element ,+1 grade of kth
First control signal input V2 input low level signals of driver element.Such circular permutation.
Exemplary, in the past as a example by 8 grades of drive modules, illustrate in the drop-down maintenance stage, control node, the first output end
With the maintenance process of the current potential of the second output end.
Table 1
Table 2
It can be seen that, the lower draw ring of+1 grade of driver element of kth not only can be in the drop-down level control of drop-down maintenance stage
The current potential of node, the first output end and the second output end.And can be with the control node of drop-down kth level driver element, first defeated
Go out the current potential of end and the second output end.Every grade of driver element need to only set a set of lower pull system (drop-down module), you can realize whole
The normal work of individual gate driving circuit saves circuit element, reduces circuit area.Every grade of driver element only have it is a set of under
Maintenance system is drawn, between frame and frame, the lower pull system of odd level driver element and the lower pull system of even level driver element replace
Work, so only having the lower pull system of odd level or even level in a frame time in work, and can drive upper level to drive simultaneously
The drop-down maintenance function of moving cell, also can guarantee that circuit service life so can normally show.Moreover, it is achieved that a frame time
The interior drop-down low potential for maintaining two-stage drive unit with the lower pull system of stage circuit, reduces the power consumption of circuit.
It should be noted that in embodiments of the present invention, first pole and the second pole of any transistor source-drain electrode each other,
That is, for any transistor, its first extremely source electrode when, second extremely drains；It is first when extremely draining, the second extremely source
Pole.
The embodiment of the present invention additionally provides a kind of driving method of gate driving circuit, wherein, gate driving circuit includes：
The driver elements of multiple cascade, every grade of driver element include pre-charge module, pull-up module, reseting module, under
Draw control module and drop-down module；
The output end of pre-charge module is electrically connected with control node；
The control end for pulling up module is electrically connected with control node, pulls up the input of module and the first clock of driver element
Signal input part is electrically connected, and the first output end for pulling up module is electrically connected with the first output end of driver element；
The output end of reseting module is electrically connected with control node；
The control end of drop-down control module is electrically connected with control node, input and the driver element of drop-down control module
The electrical connection of first level signal input, the second input of drop-down control module and the second electrical level signal input of driver element
End electrical connection；Wherein, the first level signal input of adjacent two-stage drive unit is input into opposite signal；
The control end of drop-down module is electrically connected with the output end of drop-down control module, the first output end and the control of drop-down module
Node electrical connection processed, the second output end of drop-down module is electrically connected with the first output end of driver element, and the 3rd of drop-down module the
Output end is electrically connected with the control node of previous stage driver element, the 4th output end and the previous stage driver element of drop-down module
First output end is electrically connected；
Driving method provided in an embodiment of the present invention can be used for the raster data model electricity for driving any embodiment of the present invention to provide
Road.
The driving method includes：
Pre-charging stage, control pre-charge module 11 draws high the current potential of control node P；
Pull-up stage, control pull-up module 12 exports scanning signal in this grade of the first output end GOUT of driver element；
Reseting stage, control pull-up module 12 stops output scanning signal, and drags down the current potential of control node P；
The drop-down maintenance stage, according to the first control signal that the first control signal input is input into, control the lower drawing-die
The current potential of the control node P and the first output end GOUT of 15 drop-down level driver elements of block, and low level state is maintained, and control
The current potential of the control node P and the first output end GOUT of the drop-down upper level driver element of drop-down module 15 is made, and maintains low electricity
Level state；
According to the second control signal that the first control signal input is input into, it is stopped.
Wherein, the first level signal and second electrical level signal are signal opposite each other, and such as the first level signal is height
Level signal, second electrical level signal is low level signal.Or first level signal be low level signal, second electrical level is electricity high
Ordinary mail number.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention is carried out by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
More other Equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a kind of gate driving circuit, it is characterised in that including：The driver element of multiple cascade, every grade of driver element is equal
Including pre-charge module, pull-up module, reseting module, drop-down control module and drop-down module；
The output end of the pre-charge module is electrically connected with control node, for being pre-charged to the control node；
The control end of the pull-up module is electrically connected with the control node, and the input of the pull-up module drives list with described
The first clock signal input terminal electrical connection of unit, the first output end of the pull-up module and the first output of the driver element
End electrical connection, scanning signal is exported for the first output end in the driver element；
The output end of the reseting module is electrically connected with the control node, the current potential for dragging down the control node；
First control end of the drop-down control module is electrically connected with the control node, the second control of the drop-down control module
End processed electrically connects with the first control signal input of the driver element, input and the drive of the drop-down control module
The first level signal input electrical connection of moving cell；Wherein, the first control signal input of adjacent two-stage drive unit is defeated
Enter opposite signal；
The control end of the drop-down module is electrically connected with the output end of the drop-down control module, the input of the drop-down module
Electrically connected with the second electrical level signal input part of the driver element, the first output end of the drop-down module and the control are saved
Point electrical connection, the second output end of the drop-down module is electrically connected with the first output end of the driver element, the lower drawing-die
Block is used for the control node of drop-down level driver element and the current potential of the first output end；
3rd output end of the drop-down module is electrically connected with the control node of previous stage driver element, and the of the drop-down module
Four output ends are electrically connected with the first output end of previous stage driver element, and the drop-down module is additionally operable to drop-down previous stage and drives list
The control node of unit and the current potential of the first output end.
2. circuit according to claim 1, it is characterised in that the pull-up module also includes the second output end, it is described under
Drawing-die block also includes the 5th output end and the 6th output end；
5th output end of the drop-down module and the second output end of the pull-up module and this grade the second of driver element
Output end is electrically connected, and the drop-down module is additionally operable to the drop-down current potential of the second output end of level driver element；
6th output end of the drop-down module is electrically connected with the second output end of previous stage driver element, and the drop-down module is also
For the current potential of the second output end of drop-down previous stage driver element.
3. circuit according to claim 2, it is characterised in that the input of the pre-charge module and first N grades driving
The first output end electrical connection of unit, the control end of the pre-charge module is exported with the second of the preceding N grades of driver element
End electrical connection；Wherein, N is integer number；
The pre-charge module includes the first transistor, the control end of the grid of the first transistor and the pre-charge module
Electrical connection, the first pole of the first transistor electrically connects with the input of the pre-charge module, the first transistor
Second pole electrically connects with the output end of the pre-charge module.
4. circuit according to claim 1, it is characterised in that the reseting module includes input and control end；It is described
The control end of reseting module is electrically connected with the first output end of rear M grades of driver element, input and the sheet of the reseting module
The second clock signal input part electrical connection of level driver element, wherein M is positive integer.
5. circuit according to claim 4, it is characterised in that the reseting module also includes transistor seconds；
The grid of the transistor seconds is electrically connected with the control end of the reseting module, the first pole of the transistor seconds with
The input electrical connection of the reseting module, the second pole and the output end of the reseting module of the transistor seconds are electrically connected
Connect.
6. circuit according to claim 2, it is characterised in that the pull-up module includes third transistor, the 4th crystal
Pipe and the first electric capacity；
The grid of the third transistor with it is described pull-up module control end electrically connect, the first pole of the third transistor and
The input electrical connection of the pull-up module, the second pole of the third transistor is electric with the first output end of the pull-up module
Connection；
The grid of the 4th transistor with it is described pull-up module control end electrically connect, the first pole of the 4th transistor and
The input electrical connection of the pull-up module, the second pole of the 4th transistor is electric with the second output end of the pull-up module
Connection；
First pole of first electric capacity electrically connects with the control node, and the second pole and this level of first electric capacity drive list
The first output end electrical connection of unit.
7. circuit according to claim 2, it is characterised in that the drop-down control module includes the 5th transistor, the 6th
Transistor and the 7th transistor；
The grid of the 5th transistor is electrically connected with the first control end of the drop-down control module, the 5th transistor
First pole electrically connects with the input of the drop-down control module, the second pole of the 5th transistor and the drop-down control mould
The output end electrical connection of block；
The grid of the 6th transistor and the first pole electrically connect with the second control end of the drop-down control module, and described
Second pole of six transistors electrically connects with the grid of the 7th transistor；
First pole of the 7th transistor electrically connects with the second control end of the drop-down control module, the 7th transistor
The second pole electrically connected with the output end of the drop-down control module.
8. circuit according to claim 2, it is characterised in that the drop-down module includes the 8th transistor, the 9th crystal
Pipe, the tenth transistor, the 11st transistor, the tenth two-transistor and the 13rd transistor；
The grid of the 8th transistor is electrically connected with the control end of the drop-down module, the first pole of the 8th transistor with
The input electrical connection of the drop-down module, the second pole of the 8th transistor and the first output end electricity of the drop-down module
Connection；
The grid of the 9th transistor is electrically connected with the control end of the drop-down module, the first pole of the 9th transistor with
The input electrical connection of the drop-down module, the second pole of the 9th transistor and the second output end electricity of the drop-down module
Connection；
The grid of the tenth transistor is electrically connected with the control end of the drop-down module, the first pole of the tenth transistor with
The input electrical connection of the drop-down module, the second pole of the tenth transistor and the 5th output end electricity of the drop-down module
Connection；
The grid of the 11st transistor is electrically connected with the control end of the drop-down module, and the first of the 11st transistor
Pole electrically connects with the second pole of the 8th transistor, the second pole of the 11st transistor and the 3rd of the drop-down module
Output end is electrically connected；
The grid of the tenth two-transistor is electrically connected with the control end of the drop-down module, and the first of the tenth two-transistor
Pole electrically connects with the second pole of the 9th transistor, the second pole of the tenth two-transistor and the 4th of the drop-down module
Output end is electrically connected；
The grid of the 13rd transistor is electrically connected with the control end of the drop-down module, and the first of the 13rd transistor
Pole electrically connects with the second pole of the tenth transistor, the second pole of the 13rd transistor and the 6th of the drop-down module
Output end is electrically connected.
9. circuit according to claim 2, it is characterised in that the drop-down module includes the 8th transistor, the 9th crystal
Pipe, the tenth transistor, the 11st transistor, the tenth two-transistor and the 13rd transistor；
The grid of the 8th transistor is electrically connected with the control end of the drop-down module, the first pole of the 8th transistor with
The input electrical connection of the drop-down module, the second pole of the 8th transistor and the first output end electricity of the drop-down module
Connection；
The grid of the 9th transistor is electrically connected with the control end of the drop-down module, the first pole of the 9th transistor with
The input electrical connection of the drop-down module, the second pole of the 9th transistor and the second output end electricity of the drop-down module
Connection；
The grid of the tenth transistor is electrically connected with the control end of the drop-down module, the first pole of the tenth transistor with
The input electrical connection of the drop-down module, the second pole of the tenth transistor and the 5th output end electricity of the drop-down module
Connection；
The grid of the 11st transistor is electrically connected with the control end of the drop-down module, and the first of the 11st transistor
Pole electrically connects with the input of the drop-down module, and the second pole of the 11st transistor is defeated with the 3rd of the drop-down module the
Go out end electrical connection；
The grid of the tenth two-transistor is electrically connected with the control end of the drop-down module, and the first of the tenth two-transistor
Pole electrically connects with the input of the drop-down module, and the second pole of the tenth two-transistor is defeated with the 4th of the drop-down module the
Go out end electrical connection；
The grid of the 13rd transistor is electrically connected with the control end of the drop-down module, and the first of the 13rd transistor
Pole electrically connects with the input of the drop-down module, and the second pole of the 13rd transistor is defeated with the 6th of the drop-down module the
Go out end electrical connection.
10. a kind of driving method of gate driving circuit, it is characterised in that the gate driving circuit includes：
The driver elements of multiple cascade, every grade of driver element include pre-charge module, pull-up module, reseting module, under
Draw control module and drop-down module；
The output end of the pre-charge module is electrically connected with control node；
The control end of the pull-up module is electrically connected with the control node, and the input of the pull-up module drives list with described
The first clock signal input terminal electrical connection of unit, the first output end of the pull-up module and the first output of the driver element
End electrical connection；
The output end of the reseting module is electrically connected with the control node；
First control end of the drop-down control module is electrically connected with the control node, the second control of the drop-down control module
End processed electrically connects with the first control signal input of the driver element, input and the drive of the drop-down control module
The first level signal input electrical connection of moving cell；Wherein, the first control signal input of adjacent two-stage drive unit is defeated
Enter opposite signal；
The control end of the drop-down module is electrically connected with the output end of the drop-down control module, the input of the drop-down module
Electrically connected with the second electrical level signal input part of the driver element, the first output end of the drop-down module and the control are saved
Point electrical connection, the second output end of the drop-down module is electrically connected with the first output end of the driver element；
3rd output end of the drop-down module is electrically connected with the control node of previous stage driver element, and the of the drop-down module
Four output ends are electrically connected with the first output end of previous stage driver element；
The driving method includes：
Pre-charging stage, controls the pre-charge module to draw high the current potential of the control node；
In the pull-up stage, the pull-up module is controlled to export scanning signal in this grade of the first output end of driver element；
Reseting stage, controls the pull-up module to stop output scanning signal, and drag down the current potential of the control node；
The drop-down maintenance stage, according to the first control signal that first control signal input is input into, control the lower drawing-die
The control node of drop-down level driver element of block and the current potential of the first output end, and low level state is maintained, and control described
The control node of the drop-down drop-down upper level driver element of module and the current potential of the first output end, and maintain low level state；
According to the second control signal that first control signal input is input into, it is stopped.
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