CN106328084A - GOA drive circuit and liquid crystal display device - Google Patents
GOA drive circuit and liquid crystal display device Download PDFInfo
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- CN106328084A CN106328084A CN201610907367.0A CN201610907367A CN106328084A CN 106328084 A CN106328084 A CN 106328084A CN 201610907367 A CN201610907367 A CN 201610907367A CN 106328084 A CN106328084 A CN 106328084A
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- film transistor
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a GOA drive circuit and liquid crystal display device,which comprises a plurality of cascaded GOA units outputting the gate-drive signals to the Nth horizontal scanning line according to the Nth GOA units;the Nth GOA units comprise a pull-up module,a pull-down module,a pull-up control module,a pull-down maintenance module,a bootstrap capacitor module and a reset module;the pull-up module,the pull-down module,the pull-down maintenance module and the the bootstrap capacitor module respectively are connected to the Nth level gate signal point Qn and the Nth horizontal scanning line;the pull-up control module is connected to the Nth gate signal point Qn;the reset module comprises a first end,a second end,and a control end and the first end is connected to horizontal scanning line Gn.The invention can remove the blur when the liquid crystal display device is turned off.
Description
Technical field
The present invention relates to field of liquid crystal display, particularly relate to a kind of GOA drive circuit and liquid crystal indicator.
Background technology
Gate Driver On Array, is called for short GOA, namely utilizes existing thin-film transistor liquid crystal display array system
Journey by gate line scanning drive signal circuit production on array base palte, it is achieved the type of drive to dot structure progressive scan
One technology.
In prior art, after liquid crystal indicator shuts down, owing to the thin film transistor (TFT) of the dot structure of liquid crystal also having
Residual charge, therefore, can form ghost after shut down and stay, affect Consumer's Experience.
Therefore, prior art existing defects, need to improve.
Summary of the invention
It is an object of the invention to provide GOA drive circuit and the liquid crystal indicator of a kind of improvement.
For solving the problems referred to above, the technical scheme that the present invention provides is as follows:
The present invention provides a kind of GOA drive circuit, in liquid crystal indicator, including the GOA unit of multiple cascades, presses
According to N level GOA unit output gate drive signal to viewing area N level horizontal scanning line, this N level GOA unit includes
Drawing-die block, drop-down module, pull-up control module, drop-down maintenance module, bootstrap capacitor module and reseting module；Described upper drawing-die
Block, drop-down module, drop-down maintenance module and bootstrap capacitor module respectively with N level signal point Qn and N level water
Scan lines Gn electrically connects；Described pull-up control module electrically connects with described N level signal point Qn；Described reseting module bag
Include the first end, the second end and control end, described first end and N level horizontal scanning line Gn connection；
After liquid crystal indicator shuts down, described second terminates into the second high level, and terminates into first in described control
High level so that described reseting module is opened and by the second high level output to N level horizontal scanning line Gn.
Preferably, when the end of scan of all row of every frame, described second terminates into the first low level VSS, described control
Terminate into the first high level RESET so that the conducting of described reseting module, and then N level horizontal scanning line Gn is pulled low to the
One low level VSS.
Preferably, the plurality of GOA unit include the 1st grade of GOA unit cascaded successively, multiple intergrade GOA unit with
And an end level GOA unit；Described drop-down module includes the first film transistor and the second thin film transistor (TFT), described first thin
The drain electrode of film transistor is connected with described N level signal point Qn, the drain electrode of described second thin film transistor (TFT) and N level level
Scan line Gn connects, and the source electrode of described the first film transistor and the source electrode of described second thin film transistor (TFT) connect and access the
One low level VSS；
When described N level GOA unit is the 1st grade of GOA unit or intergrade GOA unit, described the first film transistor
Grid and the second thin film transistor (TFT) grid connect and be connected with N+1 level horizontal scanning line Gn+1；
When described N level GOA unit is end level GOA unit, described the first film transistor and the second thin film are brilliant
The grid of body pipe connects and accesses the first high level REST after the scanning completing all row of each frame so that described reseting module
Conducting, thus the corresponding horizontal scanning line of this end level GOA unit is pulled low to the first low level VSS.
Preferably, described reseting module includes the 3rd thin film transistor (TFT).
Preferably, also include that lower transmission module, described lower transmission module include that the 4th thin film transistor (TFT), described pull-up module include
5th thin film transistor (TFT)；
Described 4th thin-film transistor gate and the grid of the 5th thin film transistor (TFT) and N level signal point Gn are even
Connecing, the drain electrode of described 4th thin film transistor (TFT) and the 5th thin film transistor (TFT) all accesses high frequency clock signal, described 5th thin film
The source electrode of transistor and N level horizontal scanning line Gn connect, and the source electrode of described 4th thin film transistor (TFT) exports delivers a letter under N level
Number.
Preferably, described drop-down maintenance module includes the first drop-down maintenance unit；
Described first drop-down maintenance unit include the 7th thin film transistor (TFT), the 8th thin film transistor (TFT), the 9th thin film transistor (TFT),
Tenth thin film transistor (TFT), the 11st thin film transistor (TFT) and the 12nd thin film transistor (TFT)；The drain electrode of described 7th thin film transistor (TFT)
Drain electrode with grid, described 8th thin film transistor (TFT) connects and accesses the first low-frequency clock signal；Described 9th thin film transistor (TFT)
And the tenth the grid of thin film transistor (TFT) be connected with described N level signal point Qn, the drain electrode of described 9th thin film transistor (TFT),
The grid of described 8th thin film transistor (TFT) and the source electrode of described 7th thin film transistor (TFT) are connected to primary nodal point, described 8th thin
The source electrode of film transistor, the drain electrode of the tenth thin film transistor (TFT), the grid of the 11st thin film transistor (TFT) and the 12nd film crystal
The grid of pipe is connected to secondary nodal point, and the drain electrode of described 11st thin film transistor (TFT) is connected with N level horizontal scanning line, and described
The drain electrode of 12 thin film transistor (TFT)s is connected with described N level signal point Qn, and described 9th thin film transistor (TFT), the tenth thin film are brilliant
The source electrode of body pipe, the 11st thin film transistor (TFT) and the 12nd thin film transistor (TFT) connects and accesses the first low level VSS.
Preferably, described drop-down maintenance module also includes the second drop-down maintenance unit；
Described second drop-down maintenance unit includes the 13rd thin film transistor (TFT), the 14th thin film transistor (TFT), the 15th thin film
Transistor, the 16th thin film transistor (TFT), the 17th thin film transistor (TFT) and the 18th thin film transistor (TFT)；Described 13rd thin film is brilliant
The drain and gate of body pipe, the drain electrode of described 14th thin film transistor (TFT) connect and access the second low-frequency clock signal；Described
The grid of 15 thin film transistor (TFT)s and the 16th thin film transistor (TFT) is connected with described N level signal point Qn, and the described tenth
The source electrode of the drain electrode of five thin film transistor (TFT)s, the grid of described 14th thin film transistor (TFT) and described 13rd thin film transistor (TFT) is even
It is connected to the 3rd node, the source electrode of described 14th thin film transistor (TFT), the drain electrode of the 16th thin film transistor (TFT), the 17th film crystal
The grid of pipe and the grid of the 18th thin film transistor (TFT) are connected to fourth node, the drain electrode of described 17th thin film transistor (TFT) with
N level horizontal scanning line connects, and the drain electrode of described 18th thin film transistor (TFT) is connected with described N level signal point Qn, institute
State the 15th thin film transistor (TFT), the 16th thin film transistor (TFT), the 17th thin film transistor (TFT) and the source of the 18th thin film transistor (TFT)
Pole connects and accesses the first low level VSS.
Preferably, described first low-frequency clock signal and the opposite in phase of described second low-frequency clock signal.
Preferably, described bootstrap capacitor module includes bootstrap capacitor.
Present invention also offers a kind of liquid crystal indicator, including the GOA drive circuit described in any of the above-described item.
The GOA drive circuit of present invention offer and liquid crystal indicator are by arranging a reseting module, and are detecting
After liquid crystal indicator shutdown, terminating the second of reseting module into the second high level, the control at reseting module terminates into the
One high level RESET so that reseting module is opened and by the second high level output to N level horizontal scanning line Gn, and then by liquid
All pixel TFT of crystal device are opened, the electric charge remained in dischargeing rapidly pixel electrode, thus effectively improve liquid crystal
The image retention problem during shutdown of display.
Accompanying drawing explanation
Fig. 1 is the circuit structure diagram of the N level GOA unit of the GOA drive circuit in one embodiment of the present invention.
Fig. 2 is the circuit structure diagram of the 1st grade of GOA unit of the GOA drive circuit in one embodiment of the present invention.
Fig. 3 is the circuit structure diagram of the intergrade GOA unit of the GOA drive circuit in one embodiment of the present invention.
Fig. 4 is the circuit structure diagram of the end level GOA unit of the GOA drive circuit in one embodiment of the present invention.
Fig. 5 is the signal timing diagram of the GOA drive circuit of the present invention.
Detailed description of the invention
The explanation of following embodiment is particular implementation that is graphic with reference to add, that implement in order to illustrate the present invention may be used to
Example.The direction term that the present invention is previously mentioned, such as " on ", D score, "front", "rear", "left", "right", " interior ", " outward ", " side "
Deng, it is only the direction with reference to annexed drawings.Therefore, the direction term of use is to illustrate and understand the present invention, and is not used to
Limit the present invention.
In the drawings, the module that structure is similar is to represent with identical label.
This GOA drive circuit includes the GOA unit of multiple cascade, gives according to N level GOA unit output gate drive signal
Viewing area N level horizontal scanning line.The 1st grade of GOA unit that the GOA unit of the most the plurality of cascade includes cascading successively, many
Individual intergrade GOA unit and an end level GOA unit.Such as when there being the GOA unit that 100 cascade, the 2nd grade of GOA is mono-
Unit is intergrade GOA unit to the 99th grade of GOA unit, and the 100th grade of GOA unit is end level GOA unit.
Wherein, refer to Fig. 1, this N level GOA unit includes pulling up module 101, drop-down module 102, pull-up control module
103, drop-down maintenance module 104, bootstrap capacitor module 105, lower transmission module 106 and reseting module 107.
Specifically, pull-up module 101, drop-down module 102, drop-down maintenance module 104 and bootstrap capacitor module 105 are divided equally
Do not electrically connect with N level signal point Qn and N level horizontal scanning line Gn.Pull-up control module 103 and described N level grid
Pole signaling point Qn electrically connects；This lower transmission module 106 is connected with this N level signal point Qn and N+1 level GOA unit connects
Connect.This reseting module 107 is connected with this N level horizontal scanning line Gn.
This pull-up module 101 includes when the drain electrode of the 5th thin film transistor (TFT) T5, the 5th thin film transistor (TFT) T5 accesses high frequency
Clock signal CK, the source electrode of the 5th thin film transistor (TFT) T5 is connected with this N level horizontal scanning line Gn, the 5th thin film transistor (TFT) T5
Grid be connected with this N level signal point Qn.This pull-up module 101 is converted to signal with by high frequency clock signal CK
And export to N level horizontal scanning line Gn.
This pull-up control module 103 includes the 6th thin film transistor (TFT) T6, the source electrode of the 6th thin film transistor (TFT) T6 and this N
Level signal point Qn connects.This pull-up control module 103 is for controlling the ON time of the 5th thin film transistor (TFT) T5.
This bootstrap capacitor module 105 includes bootstrap capacitor Cb.
This lower transmission module 106 includes when the drain electrode of the 4th thin film transistor (TFT) T4, the 4th thin film transistor (TFT) T4 accesses high frequency
Clock signal CK, the 4th thin film transistor (TFT) T4 source electrode output under the number of delivering a letter STn, the grid of the 4th thin film transistor (TFT) T4 with should
N level signal point Qn connects.
This drop-down maintenance module 104 includes the first drop-down maintenance unit 1041 and the second drop-down maintenance unit 1042.
This first drop-down maintenance unit 1041 includes the 7th thin film transistor (TFT) T7, the 8th thin film transistor (TFT) T8, the 9th thin film
Transistor T9, the tenth thin film transistor (TFT) T10, the 11st thin film transistor (TFT) T11 and the 12nd thin film transistor (TFT) T12.7th is thin
The drain and gate of film transistor T7, the drain electrode of the 8th thin film transistor (TFT) T8 connect and access the first low-frequency clock signal LC1.The
Nine thin film transistor (TFT) T9 and the grid of the tenth thin film transistor (TFT) T10 and N level signal point Qn connect, the 9th film crystal
The source electrode of the drain electrode of pipe T9, the grid of the 8th thin film transistor (TFT) T8 and the 7th thin film transistor (TFT) T7 is connected to primary nodal point, the
The source electrode of eight thin film transistor (TFT) T8, the drain electrode of the tenth thin film transistor (TFT) T10, the grid of the 11st thin film transistor (TFT) T11 and
The grid of 12 thin film transistor (TFT) T12 is connected to secondary nodal point.The drain electrode of the 11st thin film transistor (TFT) T11 is swept with N level level
Retouch line Gn to connect.The drain electrode of the 12nd thin film transistor (TFT) T12 is connected with N level signal point Qn, the 9th thin film transistor (TFT) T9,
Tenth thin film transistor (TFT) T10, the source electrode of the 11st thin film transistor (TFT) T11 and the 12nd thin film transistor (TFT) T12 connect and access
First low level VSS.
This second drop-down maintenance unit 1042 include the 13rd thin film transistor (TFT) T13, the 14th thin film transistor (TFT) T14,
15 thin film transistor (TFT) T15, the 16th thin film transistor (TFT) T16, the 17th thin film transistor (TFT) T17 and the 18th thin film transistor (TFT)
T18.The drain and gate of the 13rd thin film transistor (TFT) T13, the drain electrode of the 14th thin film transistor (TFT) T14 connect and to access second low
Frequently clock signal LC2.15th thin film transistor (TFT) T15 and the grid of the 16th thin film transistor (TFT) T16 and N level signal
Point Qn connects, and the drain electrode of the 15th thin film transistor (TFT) T15, the grid of the 14th thin film transistor (TFT) T14 and the 13rd thin film are brilliant
The source electrode of body pipe T13 is connected to the 3rd node, the source electrode of the 14th thin film transistor (TFT) T14, the leakage of the 16th thin film transistor (TFT) T16
The grid of pole, the grid of the 17th thin film transistor (TFT) T17 and the 18th thin film transistor (TFT) T18 is connected to fourth node.Tenth
The drain electrode of seven thin film transistor (TFT) T17 is connected with N level horizontal scanning line Gn.The drain electrode of the 18th thin film transistor (TFT) T18 is with described
N level signal point Qn connects, the 15th thin film transistor (TFT) T15, the 16th thin film transistor (TFT) T16, the 17th film crystal
The source electrode of pipe T17 and the 18th thin film transistor (TFT) T18 connects and accesses the first low level VSS.
This reseting module 107 includes the first end, the second end and controls end, the first end and N level horizontal scanning line Gn even
Connect.When the row end of scan of all row of every frame, second terminates into the first low level VSS, controls to terminate into the first high level
RESET, so that reseting module 107 turns on, and then is pulled low to the first low level by the current potential of N level horizontal scanning line Gn
VSS.Thus the grid of often row pixel is all pulled to electronegative potential, the gate drive signal of whole liquid crystal indicator is carried out multiple
Position, can improve the stability of GOA drive circuit.
After detection liquid crystal indicator shutdown, second terminates into the second high level, terminates into the first high level in control
RESET so that reseting module 107 is opened and by the second high level output to N level horizontal scanning line Gn.And then by liquid crystal display
All pixel TFT of device are opened, the electric charge remained in dischargeing rapidly pixel electrode, thus effectively improve liquid crystal display
Shutdown time image retention problem.
Wherein, this reseting module 107 includes the 3rd thin film transistor (TFT) T3, and its grid is for controlling end, and drain electrode is the first end, source
Extremely second end.In specific implementation process, the source electrode of the 3rd thin film transistor (TFT) T3 and grid can be carried with voltage respectively
Connect for circuit, the source electrode of this first film transistor T1 and the second thin film transistor (TFT) T2 is connected with circuit for providing voltage.
This circuit for providing voltage provides the first low level VSS to the source electrode of this second thin film transistor (TFT) T2, this first low level VSS direct current
Low-voltage, such as, can be 0.1V or 0.05V etc..During every frame line end of scan, this circuit for providing voltage to second terminate into
First low level VSS, terminates into the first high level to this control, so that the 3rd thin film transistor (TFT) T3 conducting, and then by N
The current potential of level horizontal scanning line Gn is pulled low to the first low level VSS.After detection liquid crystal indicator shutdown, circuit for providing voltage
Terminate into the second high level to second, terminate into the first high level RESET in control so that the 3rd thin film transistor (TFT) T3 opens also
N level horizontal scanning line Gn is given by the second high level output.
This drop-down module 102 includes the first film transistor T1 and the second thin film transistor (TFT) T2, and described the first film is brilliant
The drain electrode of body pipe T1 is connected with N level signal point Qn, the drain electrode of the second thin film transistor (TFT) T2 and N level horizontal scanning line Gn
Connecting, the source electrode of described the first film transistor T1 and the source electrode of the second thin film transistor (TFT) T2 connect and to be respectively connected to first low
Level VSS.
Refer to Fig. 2, when this N level GOA unit is the 1st grade of GOA unit, the 6th of this pull-up control module 103 is thin
The grid of film transistor T6 is connected with drain electrode and accesses enabling signal STV.The first film transistor T1 of this drop-down module 102 with
And second thin film transistor (TFT) T2 grid connect and be connected with N+1 level horizontal scanning line Gn+1.
Refer to Fig. 3, when this N level GOA unit is intergrade GOA unit, the 6th of this pull-up control module 103 is thin
The source electrode of the grid of film transistor T6 and the 4th thin film transistor (TFT) T4 of N-1 level GOA unit connects.6th thin film transistor (TFT) T6
Drain electrode be connected with N-1 level horizontal scanning line Gn-1.The first film transistor T1 of this drop-down module 102 and the second thin film
The grid of transistor T2 connect and with N+1 level horizontal scanning line Gn+1.
Refer to Fig. 4, when this N level GOA unit is end level GOA unit, the 6th of this pull-up control module 103 is thin
The source electrode of the grid of film transistor T6 and the 4th thin film transistor (TFT) T4 of N-1 level GOA unit connects.6th thin film transistor (TFT) T6
Drain electrode be connected with N-1 level horizontal scanning line Gn-1.The grid and second of the first film transistor of this drop-down module 102
The grid of thin film transistor (TFT) connects, and when at every frame line end of scan, accesses the first high level signal RESET；Thus often
The reset of each row output is realized the most rapidly after the frame line end of scan.When being embodied as, by the grid of this first film transistor T1
And second the grid of thin film transistor (TFT) T2 be connected with circuit for providing voltage.
As it is shown in figure 5, this first low-frequency clock signal LC1 and the opposite in phase of the second low-frequency clock signal LC2, that is to say
This first drop-down maintenance unit 1041 and this second drop-down maintenance unit 1042 alternation, can avoid because voltage stress makes
Film crystal tube failure.
In the scan period T1 of the frame shown in Fig. 5, enabling signal STV from low level become high level time, the 1st grade
GOA unit starts to export gate drive signal to the 1st grade of horizontal scanning line G1.
Then the lower transmission module 106 of the 1st grade of GOA unit by under the number of delivering a letter be sent to the 2nd grade of GOA unit upload control
Module 103, this pull-up control module 103 receives and turns on after the number of delivering a letter under this, so that this pull-up module 101 turns on, and then
Output gate drive signal is to the 2nd grade of horizontal scanning line G2.Output gate drive signal gives the 1st grade of GOA unit simultaneously
Drop-down module 102, so that this drop-down module 102 turns on, this drop-down module 102 turns on, thus by the 1st grade of signal point
The current potential of Q1 and the 1st grade of horizontal scanning line G1 is pulled low to the first low level VSS.
Until GOA unit at different levels all export gate drive signal give horizontal scanning lines at different levels, and, at end, level GOA is mono-
After unit's output gate drive signal is to afterbody horizontal scanning line, after having that is to say the scanning of each row of this frame, at this end
The grid of the first film transistor T1 and the second thin film transistor (TFT) T2 of the drop-down module 102 of tail level GOA unit all accesses
One high level signal RESET, the grid at the 3rd thin film transistor (TFT) T3 of the reseting module 107 of every one-level GOA unit accesses the
One high level signal RESET, thus complete the Rapid reset of horizontal scanning line at different levels.
After liquid crystal indicator shuts down, the reseting module 107 of every one-level GOA unit is generated second and is terminated into the second high electricity
Flat, and terminate into the first high level RESET in control so that reseting module 107 is opened and by the second high level output to N level
Horizontal scanning line Gn.And then all pixel TFT of liquid crystal indicator are opened, the electricity remained in dischargeing rapidly pixel electrode
Lotus, thus image retention problem when effectively improving the shutdown of liquid crystal display.
Present invention also offers a kind of liquid crystal indicator, it includes the GOA drive circuit in above-described embodiment.
In sum, although the present invention is disclosed above with preferred embodiment, but above preferred embodiment and be not used to limit
The present invention processed, those of ordinary skill in the art, without departing from the spirit and scope of the present invention, all can make various change and profit
Decorations, therefore protection scope of the present invention defines in the range of standard with claim.
Claims (10)
1. a GOA drive circuit, in liquid crystal indicator, it is characterised in that includes the GOA unit of multiple cascade, presses
According to N level GOA unit output gate drive signal to viewing area N level horizontal scanning line, this N level GOA unit includes
Drawing-die block, drop-down module, pull-up control module, drop-down maintenance module, bootstrap capacitor module and reseting module；Described upper drawing-die
Block, drop-down module, drop-down maintenance module and bootstrap capacitor module respectively with N level signal point Qn and N level water
Scan lines Gn electrically connects；Described pull-up control module electrically connects with described N level signal point Qn；Described reseting module bag
Include the first end, the second end and control end, described first end and N level horizontal scanning line Gn connection；
After liquid crystal indicator shuts down, described second terminates into the second high level, and terminates into the first high electricity in described control
Flat so that reseting module is opened and by the second high level output to N level horizontal scanning line Gn.
GOA drive circuit the most according to claim 1, it is characterised in that when the end of scan of all row of every frame, described
Second terminates into the first low level VSS, and described control terminates into the first high level RESET so that reseting module conducting, enters
And N level horizontal scanning line Gn is pulled low to the first low level VSS.
GOA drive circuit the most according to claim 2, it is characterised in that the plurality of GOA unit includes cascading successively
1st grade of GOA unit, multiple intergrade GOA unit and an end level GOA unit；Described drop-down module includes that the first film is brilliant
Body pipe and the second thin film transistor (TFT), the drain electrode of described the first film transistor is connected with described N level signal point Qn, institute
The drain electrode stating the second thin film transistor (TFT) is connected with N level horizontal scanning line Gn, the source electrode of described the first film transistor and
The source electrode of two thin film transistor (TFT)s connects and accesses the first low level VSS；
When described N level GOA unit is the 1st grade of GOA unit or intergrade GOA unit, the grid of described the first film transistor
The grid of pole and the second thin film transistor (TFT) connects and is connected with N+1 level horizontal scanning line Gn+1；
When described N level GOA unit is end level GOA unit, described the first film transistor and the second thin film transistor (TFT)
Grid connect and after the scanning completing all row of this frame, access the first high level REST so that described reseting module turn on,
Thus the corresponding horizontal scanning line of this end level GOA unit is pulled low to the first low level VSS.
GOA drive circuit the most according to claim 3, it is characterised in that described reseting module includes the 3rd film crystal
Pipe.
GOA drive circuit the most according to claim 2, it is characterised in that also include lower transmission module, described lower transmission module bag
Including the 4th thin film transistor (TFT), described pull-up module includes the 5th thin film transistor (TFT)；
Described 4th thin-film transistor gate and the grid of the 5th thin film transistor (TFT) and N level signal point Gn connect, institute
The drain electrode stating the 4th thin film transistor (TFT) and the 5th thin film transistor (TFT) all accesses high frequency clock signal, described 5th thin film transistor (TFT)
Source electrode and N level horizontal scanning line Gn connect, the source electrode of described 4th thin film transistor (TFT) exports the number of delivering a letter under N level.
GOA drive circuit the most according to claim 2, it is characterised in that described drop-down maintenance module includes that first is drop-down
Maintenance unit；
Described first drop-down maintenance unit include the 7th thin film transistor (TFT), the 8th thin film transistor (TFT), the 9th thin film transistor (TFT), the tenth
Thin film transistor (TFT), the 11st thin film transistor (TFT) and the 12nd thin film transistor (TFT)；The drain electrode of described 7th thin film transistor (TFT) and grid
Pole, the drain electrode of described 8th thin film transistor (TFT) connect and access the first low-frequency clock signal；Described 9th thin film transistor (TFT) and
The grid of the tenth thin film transistor (TFT) is connected with described N level signal point Qn, the drain electrode of described 9th thin film transistor (TFT), described
The grid of the 8th thin film transistor (TFT) and the source electrode of described 7th thin film transistor (TFT) are connected to primary nodal point, and described 8th thin film is brilliant
The source electrode of body pipe, the drain electrode of the tenth thin film transistor (TFT), the grid of the 11st thin film transistor (TFT) and the 12nd thin film transistor (TFT)
Grid is connected to secondary nodal point, and the drain electrode of described 11st thin film transistor (TFT) is connected with N level horizontal scanning line, and the described 12nd
The drain electrode of thin film transistor (TFT) is connected with described N level signal point Qn, described 9th thin film transistor (TFT), the tenth film crystal
The source electrode of pipe, the 11st thin film transistor (TFT) and the 12nd thin film transistor (TFT) connects and accesses the first low level VSS.
GOA drive circuit the most according to claim 6, it is characterised in that it is characterized in that, described drop-down maintenance module is also
Including the second drop-down maintenance unit；
Described second drop-down maintenance unit includes the 13rd thin film transistor (TFT), the 14th thin film transistor (TFT), the 15th film crystal
Pipe, the 16th thin film transistor (TFT), the 17th thin film transistor (TFT) and the 18th thin film transistor (TFT)；Described 13rd thin film transistor (TFT)
Drain and gate, the drain electrode of described 14th thin film transistor (TFT) connects and accesses the second low-frequency clock signal；Described 15th
The grid of thin film transistor (TFT) and the 16th thin film transistor (TFT) is connected with described N level signal point Qn, described 15th thin
The source electrode of the drain electrode of film transistor, the grid of described 14th thin film transistor (TFT) and described 13rd thin film transistor (TFT) is connected to
3rd node, the source electrode of described 14th thin film transistor (TFT), the drain electrode of the 16th thin film transistor (TFT), the 17th thin film transistor (TFT)
The grid of grid and the 18th thin film transistor (TFT) is connected to fourth node, the drain electrode of described 17th thin film transistor (TFT) and N
Level horizontal scanning line connects, and the drain electrode of described 18th thin film transistor (TFT) is connected with described N level signal point Qn, and described the
The source electrode of 15 thin film transistor (TFT)s, the 16th thin film transistor (TFT), the 17th thin film transistor (TFT) and the 18th thin film transistor (TFT) is even
Connect and access the first low level VSS.
GOA drive circuit the most according to claim 7, it is characterised in that described first low-frequency clock signal and described the
The opposite in phase of two low-frequency clock signals.
GOA drive circuit the most according to claim 1, it is characterised in that described bootstrap capacitor module includes bootstrap capacitor.
10. a liquid crystal indicator, it is characterised in that include the GOA drive circuit described in any one of claim 1-9.
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| CN201610907367.0A CN106328084A (en) | 2016-10-18 | 2016-10-18 | GOA drive circuit and liquid crystal display device |
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| CN201610907367.0A Pending CN106328084A (en) | 2016-10-18 | 2016-10-18 | GOA drive circuit and liquid crystal display device |
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Application publication date: 20170111 |