CN106531055A - Scanning unit, gate drive circuit and display device - Google Patents

Scanning unit, gate drive circuit and display device Download PDF

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Publication number
CN106531055A
CN106531055A CN201710014848.3A CN201710014848A CN106531055A CN 106531055 A CN106531055 A CN 106531055A CN 201710014848 A CN201710014848 A CN 201710014848A CN 106531055 A CN106531055 A CN 106531055A
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China
Prior art keywords
transistor
pull
node
outfan
control
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CN201710014848.3A
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Chinese (zh)
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CN106531055B (en
Inventor
费日锂
秦丹丹
敦栋梁
简守甫
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Shanghai AVIC Optoelectronics Co Ltd
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Shanghai AVIC Optoelectronics Co Ltd
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Classifications

    • 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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2077—Display of intermediate tones by a combination of two or more gradation control methods
    • 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

Abstract

The invention discloses a scanning unit, a gate drive circuit and a display device. The scanning unit comprises a primary subunit and a secondary subunit, the scanning unit can gradually output scanning signals from the primary subunit to the secondary subunit, and in the scanning process, the primary subunit is matched with the secondary subunit, so that when one subunit outputs scanning signals, the other subunit does not output scanning signals. The scanning unit can gradually output two stages of scanning signals, the structure of the scanning unit is simplified by interaction of the primary subunit and the secondary subunit, and the requirement for diversity of the gate drive circuit is met.

Description

Scanning element, gate driver circuit and display device
Technical field
The present invention relates to display technology field, more specifically, is related to a kind of scanning element, gate driver circuit and shows Showing device.
Background technology
With the development of electronic technology, display device has been widely used in each row field and various electronic products, into For the indispensable part of people's live and work, such as TV, mobile phone, computer, personal digital assistant etc..It is existing to show dress In putting, display device includes gate driver circuit, and gate driver circuit is mainly used in scanning multistage gate line, with by scanning Gate line and the pel array to being electrically connected with gate line is scanned, and then coordinate All other routes structure and carry out the aobvious of picture Show.Due to multifarious demand of the people to gate driver circuit, therefore gate driver circuit is designed to developer now One of main research tendency.
The content of the invention
In view of this, the invention provides a kind of scanning element, gate driver circuit and display device, scanning element can Two-stage scan signal is exported step by step, and is interacted by first order subelement and second level subelement and simplified scanning element Structure, and meet the multifarious demand of gate driver circuit.
For achieving the above object, the technical scheme that the present invention is provided is as follows：
A kind of scanning element, including first order subelement and second level subelement, wherein, the first order subelement bag Include：First input module, the first pull-up node, first pull-up control module, the first pull-down node, the first drop-down control module, First drop-down generation module, the first output module, the first outfan, the first cascade output module and the first cascade outfan；Institute Stating second level subelement includes：Second input module, the second pull-up node, the second pull-up control module, the second pull-down node, the Two drop-down control modules, the second drop-down generation module, the second output module, the second outfan, the second cascade output module and the Two cascaded-output ends；
Current potential of first input module in response to the first control end, and first voltage end is controlled with the described first pull-up The on-state of node, and the connection respectively with first pull-down node and second pull-down node of control tertiary voltage end State, and in response to the current potential of the second control end, and the on-state at second voltage end and first pull-up node is controlled, Wherein, the level at the first voltage end and second voltage end is contrary；
Current potential of the first pull-up control module in response to first pull-up node, and control the tertiary voltage end On-state with first pull-down node, the first drop-down generation module and the second drop-down generation module respectively；
Current potential of the first drop-down control module in response to first pull-down node, and control the tertiary voltage end Respectively with first pull-up node, first output module, it is described first cascade outfan, the second pull-up node, second The on-state of outfan and the second cascade outfan；
Current potential of the first drop-down generation module in response to the first signal end, and control first signal end with it is described The on-state of the first pull-down node, wherein, in the described first pull-up control module in response to the first pull-up node current potential, And control the tertiary voltage end respectively with first pull-down node, the first drop-down generation module and described second under When drawing generation module to connect, the current potential of first pull-down node and the second pull-down node is the current potential at the tertiary voltage end；
It is defeated with described first that first output module controls the 3rd signal end in response to the current potential of the first pull-up node Go out the on-state at end；
The first cascade output module controls the 3rd signal end in response to the current potential of first pull-up node With the on-state of the described first cascade outfan；
Current potential of second input module in response to the 3rd control end, and control the first voltage end and described second The on-state of pull-up node, and in response to the current potential of the 4th control end, and second voltage end is controlled with the described second pull-up The on-state of node；
Current potential of the second pull-up control module in response to the second pull-up node, and control the tertiary voltage end difference With the on-state of second pull-down node, the second drop-down generation module and the first drop-down generation module；
Current potential of the second drop-down control module in response to the second pull-down node, and control the tertiary voltage end difference With second pull-up node, the second output module, the second cascade outfan, the first pull-up node, the first outfan, the first order The on-state of connection outfan；
Current potential of the second drop-down generation module in response to secondary signal end, and control the secondary signal end with it is described The on-state of the second pull-down node, wherein, pulls up electricity of the control module in response to second pull-up node described second Position, and control the tertiary voltage end respectively with second pull-down node, the second drop-down generation module and described first When drop-down generation module is connected, the current potential of second pull-down node and the first pull-down node is the electricity at the tertiary voltage end Position；
Current potential of second output module in response to second pull-up node, and control the 4th signal end and institute State the on-state of the second outfan；
Current potential of the second cascade output module in response to second pull-up node, and control the 4th signal end With the on-state of the described second cascade outfan.
The embodiment of the invention also discloses a kind of gate driver circuit, the n levels scanning list that the gate driver circuit includes In unit, above-described scanning element is per one-level scanning element, n is the integer more than or equal to 2.
The embodiment of the invention also discloses a kind of display device, it is characterised in that including above-described raster data model electricity Road.
Compared to prior art, the technical scheme that the present invention is provided at least has advantages below：
The invention provides scanning element include first order subelement and second level subelement, scanning element can be along The direction of one-level subelement to second level subelement exports scanning signal step by step, and in scanning process, first order subelement and Second level subelement cooperates, and when making one-level subelement output scanning signal wherein, another grade of subelement does not export scanning Signal.Scanning element disclosed by the invention can export two-stage scan signal step by step, and pass through first order subelement and the second level Subelement interacts and the structure of simplified scanning element, and meets the multifarious demand of gate driver circuit.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can be with basis The accompanying drawing of offer obtains other accompanying drawings.
A kind of structural representation of scanning element that Fig. 1 is provided for the embodiment of the present application；
A kind of concrete structure schematic diagram of scanning element that Fig. 2 is provided for the embodiment of the present application；
A kind of sequential chart of scan mode that Fig. 3 is provided for the embodiment of the present application；
The unit cascaded structural representation of different scanning in a kind of gate driver circuit that Fig. 4 is provided for the embodiment of the present application Figure.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.
Embodiments provide a kind of scanning element, gate driver circuit and display device, scanning element can be by Level output two-stage scan signal, and interacted and the knot of simplified scanning element by first order subelement and second level subelement Structure, and meet the multifarious demand of gate driver circuit.
For achieving the above object, the technical scheme that the embodiment of the present application is provided is as follows, specifically with reference to shown in Fig. 1 to Fig. 4, right The technical scheme that the embodiment of the present application is provided is described in detail.
With reference to shown in Fig. 1, a kind of structural representation of the scanning element provided for the embodiment of the present application, wherein, scanning is single Unit is applied to gate driver circuit, and the scanning element includes first order subelement and second level subelement.Also, by the first control End SET1 processed, the second control end RESET1, the 3rd control end SET2 and the 4th control end RESET2, first voltage end FW, second Voltage end BW and tertiary voltage end VGL, the first signal end V1, secondary signal end V2, the 3rd signal end CK1 and the 4th signal end The input voltage of the ports such as CK2, coordinates the circuit structure of first order subelement and second level subelement, common to realize exporting step by step The function of two-stage scan signal.
Wherein, the first order subelement includes：First input module 101, the first pull-up node P1, the first pull-up control Module 102, the first pull-down node Q1, the first drop-down control module 103, the first drop-down generation module 104, the first output module 105th, the first outfan Gout1, the first cascade output module 106 and the first cascade outfan Gout1 '；The second level is single Unit includes：Second input module 201, the second pull-up node P2, second pull-up control module 202, the second pull-down node Q2, second Drop-down control module 203, the second drop-down generation module 204, the second output module 205, the second outfan Gout2, the second cascade Output module 206 and the second cascade outfan Gout2 '.
Specifically, in first order subelement：
Current potential of first input module 101 in response to the first control end SET1, and control first voltage end FW and institute State the on-state of the first pull-up node P1, and control tertiary voltage end VGL respectively with first pull-down node Q1, and control The on-state of tertiary voltage end VGL processed and second pull-down node Q2, and in response to the electricity of the second control end RESET1 Position, and control the on-state of second voltage end BW and first pull-up node P1.
Wherein, it is high level when the signal of the first control end SET1 and the second control end RESET1 is different, so that the When connecting between one voltage end FW and the first pull-up node P1, disconnect between second voltage end BW and the first pull-up node P1, When connecting between second voltage end BW and the first pull-up node P1, do not connect between first voltage end FW and the first pull-up node P1 It is logical, and the level of first voltage end FW and second voltage end BW output signals is conversely, so that first voltage end FW and first When pull-up node P1 is connected and when second voltage end BW and the first pull-up node P1 are connected, the first pull-up node P1 is different electric It is flat.
Below with first voltage end FW as high level, second voltage end BW is low level, and tertiary voltage end VGL is low level As a example by, the first scanning element provided to the embodiment of the present invention is described.
Specifically, when the first control end SET1 is high level, when the second control end RESET1 is low level, first voltage End FW and the first pull-up node P1 between connect, the signal transmission of first voltage end FW to the first pull-up node P1, by first Draw the current potential of node P1 to draw high, and connect between tertiary voltage end VGL and the first pull-down node Q1, tertiary voltage end VGL's is low Level signal is transmitted to the first pull-down node Q1, and the current potential of the first pull-down node Q1 is dragged down.When the first control end SET1 is low Level, when the second control end RESET1 is high level, ends between first voltage end FW and the first pull-up node P1, tertiary voltage End VGL and the first pull-down node Q1 between end, the signal transmission of second voltage end BW to the first pull-up node P1, by first The current potential of node P1 is drawn to drag down.
Current potential of the first pull-up control module 102 in response to first pull-up node P1, and control the described 3rd Voltage end VGL respectively with first pull-down node Q1, the first drop-down generation module 104, and the second drop-down generation The on-state of module 204.
Specifically, when the first pull-up node P1 is high level, the first pull-down node Q1 is with tertiary voltage end VGL indirectly Logical, the current potential of the first pull-down node Q1 is dragged down by the signal transmission of tertiary voltage end VGL to the first pull-down node Q1, and the 3rd is electric Connect between pressure side VGL and the first drop-down generation module 104, the 104 no signal output of the first drop-down generation module of control.When first When pull-up node P1 is low level, not by the first pull-up control module between the first pull-down node Q1 and tertiary voltage end VGL 102 connect, and are not also connect by the first pull-up control module 102 between tertiary voltage end VGL and the first drop-down generation module 104 Logical, the signal output of first pull-up 102 pairs of the first drop-down generation modules 104 of control module does not play control action.
Current potential of the first drop-down control module 103 in response to first pull-down node Q1, and control the described 3rd Voltage end VGL cascades outfan with first pull-up node P1, first output module 105, described first respectively Gout1 ', the second pull-up node P2, the on-state of the cascade outfan Gout2 ' of the second outfan Gout2 and second.
Specifically, when the first pull-down node Q1 is high potential, tertiary voltage end VGL and the first output module 105 and Connect between first pull-up node P1, the first pull-up is saved by the signal transmission of tertiary voltage end VGL to the first pull-up node P1 The current potential of point P1 is dragged down, and maintains electronegative potential；And connect between the cascade outfan Gout1 ' of tertiary voltage end VGL and first, The low level signal of tertiary voltage end VGL is transmitted to the first cascade outfan Gout1 ', so as to maintain the first cascade outfan The electronegative potential of Gout1 ', and the cascade outfan Gout1 ' of Jing first export the electronegative potential.Also, when the first pull-down node Q1 is height During current potential, tertiary voltage end VGL and the second pull-up node P2 are connected, by the signal transmission of tertiary voltage end VGL to the second pull-up Node P2, the current potential of the second pull-up node P2 is dragged down, and maintains electronegative potential, and tertiary voltage end VGL passes through the first drop-down control Connect between molding block 103 and the cascade outfan Gout2 ' of the second outfan Gout2 and second, by the low of tertiary voltage end VGL Level signal transmit to the second outfan Gout2 and second cascade outfan Gout2 ', so as to maintain the second outfan Gout2 and The electronegative potential of the second cascade outfan Gout2 ', and the cascades of Jing the second outfan Gout2 and second outfan Gout2 ' is defeated respectively Go out the electronegative potential.When the first pull-down node Q1 is electronegative potential, tertiary voltage end VGL does not pass through the first drop-down control module 103 With first pull-up node P1, first output module 105, the first cascade outfan Gout1 ', the second pull-up section Connect between point P2, the second outfan Gout2 and the second cascade outfan Gout2 '.
Current potential of the first drop-down generation module 104 in response to the first signal end V1, and control first signal end V1 and the on-state of first pull-down node Q1, wherein, pull up control module 102 in response to described first described first Pull-up node P1 current potential, and control the tertiary voltage end VGL respectively with first pull-down node Q1, the first drop-down life Into module 104, connect with the described second drop-down generation module 204 when, first pull-down node Q1 and the second pull-down node Q2 Current potential be the tertiary voltage end VGL current potential.Specifically, tertiary voltage end VGL and the first drop-down generation module 104 it Between disconnect on the premise of, when connecting between the first signal end V1 and the first pull-down node Q1, by the first signal end V1 export Signal transmission to the first pull-down node Q1, and then control the first drop-down control module 103 work；As tertiary voltage end VGL When connecting between the first drop-down generation module 104, signal of the first drop-down generation module 104 in response to tertiary voltage end VGL And no signal output.
First output module 105 controls the 3rd signal end CK1 and institute in response to the current potential of the first pull-up node P1 State the on-state of the first outfan Gout1.When the first pull-up node P1 is high level, the control of the first output module 105 the Connect between three signal end CK1 and the first outfan Gout1, by the signal transmission of the 3rd signal end CK1 to the first outfan Gout1, and the first outfans of Jing Gout1 outputs.
The first cascade output module 106 controls the 3rd letter in response to the current potential of first pull-up node P1 Number end CK1 and described first cascade outfan Gout1 ' on-state.When the first pull-up node P1 is high level, the first order Connection output module 106 controls to connect between the cascade outfan Gout1 ' of the 3rd signal end CK1 and first, by the 3rd signal end CK1 Signal transmission to the first cascade outfan Gout1 ', and cascade outfan Gout1 ' outputs of Jing first.
Major part in the subelement module of the second level is similar with the module of the first subelement, specifically, second level subelement In：
The structure of second input module 201 can be identical with 101 structure of the first input module, it is also possible to different, this Illustrate by taking the two structure difference as an example in embodiment.Current potential of second input module 201 in response to the 3rd control end SET2, And the on-state of the control first voltage end FW and second pull-up node P2, and in response to the 4th control end The current potential of RESET2, and control the on-state of second voltage end BW and second pull-up node P2.
Wherein, it is high level when the signal of the 3rd control end SET2 and the 4th control end RESET2 is different, so that the When connecting between one voltage end FW and the second pull-up node P2, disconnect between second voltage end BW and the second pull-up node P2, When connecting between second voltage end BW and the second pull-up node P2, do not connect between first voltage end FW and the first pull-up node P1 It is logical, and the level signal of first voltage end FW and second voltage end BW is conversely, so that the pull-up of first voltage end FW and second When node P2 is connected and when second voltage end BW and the second pull-up node P2 are connected, the second pull-up node P2 is varying level.
Continue with first voltage end FW as high level, second voltage end BW is low level, and tertiary voltage end VGL is low As a example by level, the second level subelement provided to the embodiment of the present invention is described.
Specifically, when the 3rd control end SET2 is high level, and the 4th control end RESET2 is low level, first voltage end Connect between FW and the second pull-up node P2, the signal transmission of first voltage end FW is pulled up second to the second pull-up node P2 The current potential of node P2 is drawn high；When the 3rd control end SET2 is low level, and the 4th control end RESET2 is high level, second voltage End BW and the second pull-up node P2 between connect, the signal transmission of second voltage end BW to the second pull-up node P2, by second The current potential of node P2 is drawn to drag down.
The structure of the second pull-up control module 202 is identical with the structure of the first pull-up control module 102, the second pull-up Current potential of the control module 202 in response to the second pull-up node P2, and control the tertiary voltage end VGL respectively with described second under Draw the on-state of node Q2, the second drop-down generation module 204 and the first drop-down generation module 104.
Specifically, when the signal of the second pull-up node P2 is high level, tertiary voltage end VGL and the second pull-down node Q2 Between connect, the current potential of the second pull-down node Q2 drags down by the signal transmission of tertiary voltage end VGL to the second pull-down node Q2； Also, connect between tertiary voltage end VGL and the second drop-down generation module 204, the signal transmission of tertiary voltage end VGL to second Drop-down generation module 204, the second drop-down generation module 204 in response to tertiary voltage end VGL signal and no signal output.
The structure of the second drop-down control module 203 is identical with the structure of the first drop-down control module 103, and second is drop-down Current potential of the control module 203 in response to the second pull-down node Q2, and control the tertiary voltage end VGL respectively with described second on Draw node P2, the second output module 205, second cascade outfan Gout2 ', the first pull-up node P1, the first outfan Gout1, The on-state of the first cascade outfan Gout1 '.
Specifically, when the second pull-down node Q2 is high level, tertiary voltage end VGL and the second output module 205 and the Two pull-up nodes P2 connect, the signal transmission of tertiary voltage end VGL to the second pull-up node P2, by the electricity of the second pull-up node P2 Position drags down, and maintains electronegative potential；Also, connect between the cascade outfan Gout2 ' of tertiary voltage end VGL and second, it is electric by the 3rd The low level signal of pressure side VGL is transmitted to the second cascade outfan Gout2 ', so as to maintain the second cascade outfan Gout2's ' Electronegative potential, and the cascade outfan Gout2 ' of Jing second export the electronegative potential.Also, when the first pull-down node Q1 is high potential, Tertiary voltage end VGL and the first pull-up node P1 are connected, by the signal transmission of tertiary voltage end VGL to the first pull-up node P1, The current potential of the first pull-up node P1 is dragged down, and maintains electronegative potential；Also, and tertiary voltage end VGL passes through the second drop-down control Connect between module 203 and the cascade outfan Gout1 ' of the first outfan Gout1 and first, by the low electricity of tertiary voltage end VGL Flat signal transmission to the cascade outfan Gout1 ' of the first outfan Gout1 and first, so as to maintain the first outfan Gout1 and the The electronegative potential of one cascade outfan Gout1 ', and the cascade outfans of Jing the first outfan Gout1 and first Gout1 ' outputs respectively The electronegative potential.When the second pull-down node Q2 is electronegative potential, tertiary voltage end VGL by the second drop-down control module 203 with Second pull-up node P2, the second output module 205, second cascade outfan Gout2 ', the first pull-up node P1, the first outfan Connect between Gout1, the first cascade outfan Gout1 '.
The structure of the second drop-down generation module 204 is identical with the structure of the first drop-down generation module 104, and second is drop-down Current potential of the generation module 204 in response to secondary signal end V2, and control the secondary signal end V2 and second pull-down node The on-state of Q2, wherein, pulls up current potential of the control module 202 in response to second pull-up node P2 described second, and Control the tertiary voltage end VGL respectively with second pull-down node Q2, the second drop-down generation module 204 and described When one drop-down generation module 104 is connected, the current potential of second pull-down node Q2 and the first pull-down node Q1 is the described 3rd electric The current potential of pressure side VGL.
Specifically, on the premise of disconnecting between three voltage end VGL and the second drop-down generation module 204, when the second letter Number between end V2 and the second pull-down node Q2 when connecting, the signal transmission that secondary signal end V2 is exported is to the second pull-down node Q2, and then control the work of the second drop-down control module 203；When between tertiary voltage end VGL and the second drop-down generation module 204 During connection, the second drop-down generation module 204 in response to tertiary voltage end VGL signal and no signal output.Second output The structure of module 205 is identical with the structure of the first output module 105, and the second output module 205 is in response to the described second pull-up section The current potential of point P2, and control the on-state of the 4th signal end CK2 and the second outfan Gout2.Specifically, second When pull-up node P2 is high level, the second output module 205 controls the 4th signal end CK2 and the second outfan Gout2 and connects, will The signal transmission of the 4th signal end CK2 is exported to the second outfan Gout2, and the second outfans of Jing Gout2.
The structure of the second cascade output module 206 is identical with the structure of the first cascade output module 106, the second cascade Current potential of the output module 206 in response to second pull-up node P2, and control the 4th signal end CK2 and the second level The on-state of connection outfan Gout2 '.When the second pull-up node P2 is high level, the second cascade output module 206 control the The cascade outfan Gout2 ' of four signal end CK2 and second are connected, by the signal transmission of the 4th signal end CK2 to the second cascaded-output End Gout2 ', and the cascade outfan Gout2 ' outputs of Jing second.
It should be noted that in above-described embodiment be with high potential connect, electronegative potential disconnect as a example by scanning element What operation principle was illustrated, but the present invention do not limited to this, is specifically depended on the circumstances.
The scanning element of the embodiment of the present invention includes first order subelement and second level subelement, and two subelements can edge The direction of first order subelement to second level subelement exports two-stage scan signal step by step, realizes the function of gate driver circuit. Additionally, first order subelement is identical with the comprising modules structure in the subelement of the second level, and remove the first input module 101 and the The structure of two input modules 102 is different outer, and other corresponding modular structures are identical, single by first order subelement and second level First cooperating in scanning process, when making one-level subelement output scanning signal wherein, another grade of subelement is not exported Scanning signal, to meet the purpose that two-stage subelement exports two-stage scan signal step by step.Also, by phase between two-stage subelement Interaction, and impact is controlled in scanning on two-stage subelement without external circuit, it is ensured that the circuit of scanning element Simple structure, it is easy to accomplish.
Also, for the scanning circuit for only including the first outfan and the second outfan of the prior art, this The cascade outfan Gout2 ' of the first cascade outfan Gout1 ' and second are increased in scanning circuit in embodiment.
The scanning circuit of first outfan and second outfan is included in prior art only, each signal output part is except needing Outside the pixel load of the viewing area of connection display device, in addition it is also necessary to undertake to next stage scanning circuit output cascade signal Effect, and the presence of the pixel of viewing area load, inevitably result in each signal output part defeated to next stage scanning circuit There is time delay in the output rising edge of the cascade signal for going out, so as to affect the quality of cascaded transmission.Also, the load electricity of viewing area Rong Yue great, the delay that the rising edge of the corresponding output signal of each signal output part is present are bigger, even if it is defeated how to reduce cascade Go out the load of side, the situation of time delay occurs in the rising edge that cannot also solve the cascade signal of output.
And increase by first in the present embodiment and cascade the cascade output modules 106 of outfan Gout1 ' and first, by the first order Connection output module 106 in the presence of the first pull-up node P1 and the 3rd signal end CK1 produces first and cascades output signal, make First cascade outfan Gout1 ' and the first outfan Gout1 exports identical signal simultaneously；Also, pass through the first drop-down control The phase at module 103, the first pull-down node Q1, the second drop-down control module 203, the second pull-down node Q2 and tertiary voltage end Interaction, realizes the drop-down of the first cascade outfan Gout1 ' signals.And increase the second cascade outfan Gout2 ' and second Cascaded-output module 206, cascades effect of the output module 206 in the second pull-up node P2 and the 4th signal end CK2 by second Under, produce second and cascade output signal, the second cascade outfan Gout2 ' and the second outfan Gout2 is made while exporting identical Signal；Also, it is drop-down by the first drop-down control module 103, the first pull-down node Q1, the second drop-down control module 203, second Node Q2 and the interaction at tertiary voltage end, realize the drop-down of the second cascade outfan Gout2 ' signals.By arranging level Connection outfan, and using cascaded-output end as the connectivity port between the scanning element of adjacent level, due to cascaded-output end not Connection gate line (is not connected to load), so that it is guaranteed that the signal of cascaded-output end output does not have delay, it also avoid because of letter Number load of outfan and there is time delay in the rising edge of caused cascade signal, affect the scanning effect between cascade scanning unit Really.
As shown in Fig. 2 the concrete structure schematic diagram of scanning element that Fig. 2 is provided by one embodiment of the invention, below Being specifically described for provided scanning element is implemented to the present invention with reference to Fig. 2.
With reference to Fig. 1 and Fig. 2, first input module 101 that the embodiment of the present application is provided includes：The first transistor M1, Transistor seconds M2, third transistor M3 and the 4th transistor M4；
The grid of the first transistor M1 is connected to first control end SET1, and the first of the first transistor M1 End is connected to the first voltage end FW, and the second end is connected to first pull-up node P1.When the first control end SET1 is height During level, the first transistor M1 conducting, the signal transmission of first voltage end FW to the first pull-up node P1, by the first pull-up node The current potential of P1 is drawn high.
The grid of the transistor seconds M2 is connected to second control end RESET1, and the of the transistor seconds M2 One end is connected to the second voltage end BW, and the second end is connected to first pull-up node P1.When the second control end RESET1 For high level when, transistor seconds M2 conductings, the signal transmission of second voltage end BW to the first pull-up node P1, by the first pull-up The current potential of node P1 is dragged down.
The grid of third transistor M3 is connected to first control end SET1, and the first of third transistor M3 End is connected to the tertiary voltage end VGL, and the second end is connected to first pull-down node Q1.When the first control end SET1 is height During level, the conducting of third transistor M3, the voltage of tertiary voltage end VGL is transmitted to the first pull-down node Q1, by the first drop-down section The current potential of point Q1 is dragged down.
The grid of the 4th transistor M4 is connected to first control end SET1, and the first of the 4th transistor M4 End is connected to the tertiary voltage end VGL, and the second end is connected to second pull-down node Q2.When the first control end SET1 is height During level, the 4th transistor M4 conductings, the voltage of tertiary voltage end VGL is transmitted to the second pull-down node Q2, by the second drop-down section The current potential of point Q2 is dragged down.
And, second input module 201 includes：18th transistor M18 and the 19th transistor M19；
The grid of the 18th transistor M18 is connected to the 3rd control end SET2, the 18th transistor M18 First voltage end FW, the second end are connected to second pull-up node P2.When the 3rd control end SET2 is high level, the 18th Transistor M18 is turned on, and the current potential of the second pull-up node P2 is drawn by the signal transmission of first voltage end FW to the second pull-up node P2 It is high.
The grid of the 19th transistor M19 is connected to the 4th control end RESET2, the 19th transistor The first end of M19 is connected to the second voltage end BW, and the second end is connected to second pull-up node P2.When the 4th control When end RESET2 is high level, the 19th transistor M19 conductings, the signal transmission of second voltage end BW is to the second pull-up node P2, the current potential of the second pull-up node P2 is dragged down.
It should be noted that the first transistor M1 of the embodiment of the present application offer, transistor seconds M2, third transistor M3 It is identical with the conductivity type of the 4th transistor M4；And, the conductivity type of the 18th transistor M18 and the 19th transistor M19 It is identical.
In addition, in one embodiment of the application, due to needing the letter of the first pull-up node P1 and the second pull-up node P2 Number clearly, for thus for the first input module 101, the first pull-up node P1 and first electric is controlled in the first control end SET1 When connecting between pressure side FW, the second control end RESET1 can not be controlled between the first pull-up node P1 and second voltage end BW simultaneously Connect, and, when the second control end RESET1 controls to connect between the first pull-up node P1 and second voltage end BW, the first control End SET1 processed can not control to connect between the first pull-up node P1 and first voltage end FW simultaneously.
Likewise, for the second input module 102, the second pull-up node P2 and the is controlled in the 3rd control end SET2 When connecting between one voltage end FW, the 4th control end RESET2 can not control the second pull-up node P2 and second voltage end BW simultaneously Between connect, and, when the 4th control end RESET2 controls to connect between the second pull-up node P2 and second voltage end BW, the Three control ends SET2 can not control to connect between the second pull-up node P2 and first voltage end FW simultaneously.
To sum up, that is to say, that the first transistor M1 and transistor seconds M2 can not be simultaneously turned on, and, the 18th crystal Pipe M18 and the 19th transistor M19 can not equally be simultaneously turned on.
It should be noted that in the embodiment of the present application, each crystal in the first input module 101 and the second input module 201 The conductivity type of pipe is identical, i.e. the first transistor M1, transistor seconds M2, third transistor M3, the 4th transistor M4, the 18th The conductivity type of transistor M18 and the 19th transistor M19 is identical, and the present invention is with the first input module 101 and the second input As a example by module 201, each transistor is N-type transistor, its operation principle is illustrated.But the present invention is not limited to this Fixed, in other embodiments of the invention, in the first input module 101 and the second input module 201, each transistor can also be For P-type transistor, specifically depend on the circumstances.
It is for the ease of description, below to when in scanning element, each module is described, brilliant by N-type of each transistor in the module Illustrate as a example by body pipe.
With reference to shown in Fig. 2, the first pull-up control module 102 that the embodiment of the present application is provided includes the 5th transistor M5, the 6th transistor M6 and the 7th transistor M7；
The grid of the 5th transistor M5 is connected to first pull-up node P1, and the first of the 5th transistor M5 End is connected to the tertiary voltage end VGL, and the second end is connected to first pull-down node Q1.When the letter of the first pull-up node P1 Number for high level when, the 5th transistor M5 conducting, the signal transmission of tertiary voltage end VGL to the first pull-down node Q1, by first The current potential of pull-down node Q1 is dragged down.
The grid of the 6th transistor M6 is connected to first pull-up node P1, and the first of the 6th transistor M6 End is connected to the tertiary voltage end VGL, and the second end is connected to the described first drop-down generation module 104.When the first pull-up node When the signal of P1 is high level, the 6th transistor M6 conductings, the signal transmission of tertiary voltage end VGL is to the first drop-down generation module 104, the 104 no signal output of the first drop-down generation module of control.
The grid of the 7th transistor M7 is connected to first pull-up node P1, and the first of the 7th transistor M7 End is connected to the tertiary voltage end VGL, and the second end is connected to the described second drop-down generation module 204.When the first pull-up node When the signal of P1 is high level, the 7th transistor M7 conductings, the signal transmission of tertiary voltage end VGL is to the second drop-down generation module 204, the 204 no signal output of the second drop-down generation module of control.
Due to second pull-up control module 202 composition structure with first pull up control module 102 composition structure it is identical, Therefore the second pull-up control module 202 also includes three transistors, i.e. the second pull-up control module 202 includes the 20th Transistor M20, the 21st transistor M21 and the 20th two-transistor M22；
The grid of the 20th transistor M20 is connected to second pull-up node P2, the 20th transistor M20 First end be connected to the tertiary voltage end VGL, the second end is connected to the described second drop-down generation module 204.On second When the signal for drawing node P2 is high level, the 20th transistor M20 conductings, the signal transmission of tertiary voltage end VGL is under second Draw generation module 204, the 204 no signal output of the second drop-down generation module of control.
The grid of the 21st transistor M21 is connected to second pull-up node P2, the 21st crystal The first end of pipe M21 is connected to the tertiary voltage end VGL, and the second end is connected to second pull-down node Q2.On second When the signal for drawing node P2 is high level, the 21st transistor M21 conductings, the signal transmission of tertiary voltage end VGL to second Pull-down node Q2, the current potential of the first pull-down node Q2 is dragged down.
The grid of the 20th two-transistor M22 is connected to second pull-up node P2, the 22nd crystal The first end of pipe M22 is connected to the tertiary voltage end VGL, and the second end is connected to the described first drop-down generation module 104.When When the signal of two pull-up nodes P2 is high level, the 20th two-transistor M22 conductings, the signal transmission of tertiary voltage end VGL is extremely First drop-down generation module 104, the 104 no signal output of the first drop-down generation module of control.
With reference to Fig. 2, the described first drop-down generation module 104 in the present embodiment includes the 14th transistor M14 and the tenth Five transistor M15；
The grid of the 14th transistor M14 is connected to the first signal end V1, the 14th transistor M14's First end is connected to the first signal end V1, and second end of the 14th transistor M14 is connected to the 15th crystal The grid of pipe M15, the first end of the 15th transistor M15 are connected to the first signal end V1, and the second end is connected to institute State the first pull-down node Q1.
Specifically, on the premise of tertiary voltage end VGL and the first drop-down generation module 104 disconnect, when the first signal When end V1 is high level, the 14th transistor M14 and the 15th transistor M15 conductings, the signal transmission of the first signal end V1 is extremely First pull-down node Q1, the current potential of the first pull-down node Q1 is drawn high；When first signal end V1 is low level, the 14th transistor M14 and the 15th transistor M15 cut-offs, the output of 104 no signal of the first drop-down generation module.
Due to the composition structure of the second drop-down generation module 204 it is identical with the composition structure of the first drop-down generation module 104, Therefore the second drop-down generation module 204 also includes two transistors, i.e. the second drop-down generation module 204 includes the 20th Nine transistor M29 and the 30th transistor M30；
The grid of the 30th transistor M30 is connected to the secondary signal end V2, the 30th transistor M30's First end is connected to the secondary signal end V2, and it is brilliant that second end of the 30th transistor M30 is connected to the described 29th The grid of body pipe M29, the first end of the 29th transistor M29 are connected to the secondary signal end V2, the connection of the second end To second pull-down node Q2.
Specifically, on the premise of tertiary voltage end VGL and the second drop-down generation module 204 disconnect, work as secondary signal When end V2 is high level, the 29th transistor M29 and the 30th transistor M30 conductings, the signal transmission of secondary signal end V2 To the second pull-down node Q2, the current potential of the second pull-down node Q2 is drawn high；When secondary signal end V2 is low level, the 29th is brilliant Body pipe M29 and the 30th transistor M30 cut-offs, the output of 204 no signal of the second drop-down generation module.
It should be noted that the 5th transistor M5, the 6th transistor M6 in the first pull-up control module 102, the 7th brilliant The 20th transistor M20, the 21st transistor M21 and the 22nd in the pull-up control modules 202 of body pipe M7 and second The conductivity type of transistor M22 is identical；The 14th transistor M14, the 15th transistor in first drop-down generation module 104 The conductivity type phase of the 29th transistor M29 and the 30th transistor M30 in M15 and the second drop-down generation module 204 Together.
In the present embodiment, in order to the signal for reaching first voltage end V1 outputs controls the first drop-down generation module 104 and the The purpose ended between one pull-down node Q1, the breadth length ratio of the 6th transistor M6 in the embodiment of the present application are more than the described 14th The breadth length ratio of transistor M14, so that the 6th transistor M6 compares the 14th transistor M14 has priority control；Also, it is The signal for reaching second voltage end V2 outputs controls what is ended between the second drop-down generation module 204 and the second pull-down node Q2 Purpose, the breadth length ratio of the 20th transistor M20 in the embodiment of the present application are more than the breadth length ratio of the 30th transistor M30, so that The 20th transistor M20 compares the 30th transistor M30 and has priority control.
The application is for the 6th transistor M6, the 14th transistor M14, the 20th transistor M20 and the 30th transistor The concrete scope of the breadth length ratio of M30 is not limited, and carries out specific design to this needs according to practical application.
With reference to Fig. 2, the first drop-down control module 103 includes the 8th transistor M8, the 9th transistor M9, the tenth crystal Pipe M10, the 11st transistor M11, the tenth two-transistor M12, the 13rd transistor M13；
The grid of the 8th transistor M8 is connected to first pull-down node Q1, and the first of the 8th transistor M8 End is connected to the tertiary voltage end VGL, and the second end is connected to first pull-up node P1.When the first pull-down node Q1 is height During level, the first pull-up is saved by the 8th transistor M8 conductings, the signal transmission of tertiary voltage end VGL to the first pull-up node P1 The current potential of point P1 is dragged down.
The grid of the 9th transistor M9 is connected to first pull-down node Q1, and the first of the 9th transistor M9 End is connected to the tertiary voltage end VGL, and the second end is connected to the first outfan Gout1.When the first pull-down node Q1 is During high level, the 9th transistor M9 conductings, to the first outfan Gout1, Jing first is exported the signal transmission of tertiary voltage end VGL End Gout1 exports the low level signal of tertiary voltage end VGL.
The grid of the tenth transistor M10 is connected to first pull-down node Q1, and the of the tenth transistor M10 One end is connected to the tertiary voltage end VGL, and the second end is connected to the first cascade outfan Gout1 '.When the first drop-down section When point Q1 is high level, the tenth transistor M10 conductings, the signal transmission of tertiary voltage end VGL is to the first cascade outfan The cascade outfan Gout1 ' of Gout1 ', Jing first exports the low level signal of tertiary voltage end VGL.
The grid of the 11st transistor M11 is connected to first pull-down node Q1, the 11st transistor M11 First end be connected to the tertiary voltage end VGL, the second end is connected to second pull-up node P2.When the first pull-down node When Q1 is high level, the 11st transistor M11 conductings, the signal transmission of tertiary voltage end VGL to the second pull-up node P2, by the Two pull-up node P2 current potentials are dragged down.
The grid of the tenth two-transistor M12 is connected to first pull-down node Q1, the tenth two-transistor M12 First end be connected to the tertiary voltage end VGL, the second end is connected to the second outfan Gout2.When the first drop-down section Point Q1 be high level when, the tenth two-transistor M12 conducting, the signal transmission of tertiary voltage end VGL to the second outfan Gout2, The second outfans of Jing Gout2 exports the low level signal of tertiary voltage end VGL.
The grid of the 13rd transistor M13 is connected to first pull-down node Q1, the 13rd transistor M13 First end be connected to the tertiary voltage end VGL, the second end is connected to the second cascade outfan Gout2 '.Under first When drawing node Q1 is high level, the 13rd transistor M13 conductings, the signal transmission of tertiary voltage end VGL is to the second cascaded-output End Gout2 ', Jing second cascade outfan Gout2 ' exports the low level signal of tertiary voltage end VGL.
Due to the composition structure of the second drop-down control module 203 it is identical with the composition structure of the first drop-down control module 103, Therefore the second drop-down control module 203 also includes six transistors, i.e. the second drop-down control module 203 includes the 20th It is three transistor M23, the 24th transistor M24, the 25th transistor M25, the 26th transistor M26, the 27th brilliant Body pipe M27 and the 28th transistor M28.
The grid of the 23rd transistor M23 is connected to second pull-down node Q2, the 23rd crystal The first end of pipe M23 is connected to the tertiary voltage end VGL, and the second end is connected to second pull-up node P2.Under second When drawing node Q2 is high level, the 23rd transistor M23 conductings, the signal transmission of tertiary voltage end VGL is to the second pull-up section Point P2, the current potential of the second pull-up node P2 is dragged down.
The grid of the 24th transistor M24 is connected to second pull-down node Q2, the 24th crystal The first end of pipe M24 is connected to the tertiary voltage end VGL, and the second end is connected to the second outfan Gout2.Under second When drawing node Q2 is high level, the 24th transistor M24 conductings, the signal transmission of tertiary voltage end VGL is to the second outfan The second outfan Gout2 of Gout2, Jing exports the low level signal of tertiary voltage end VGL.The 25th transistor M25's Grid is connected to second pull-down node Q2, and the first end of the 25th transistor M25 is connected to the tertiary voltage End VGL, the second end are connected to the second cascade outfan Gout2 '.When the second pull-down node Q2 is high level, the 20th Five transistor M25 are turned on, and the signal transmission of tertiary voltage end VGL is to the second cascade outfan Gout2 ', the second cascaded-outputs of Jing End Gout2 ' exports the low level signal of tertiary voltage end VGL.
The grid of the 26th transistor M26 is connected to second pull-down node Q2, the 26th crystal The first end of pipe M26 is connected to the tertiary voltage end VGL, and the second end is connected to first pull-up node P1.Under second When drawing node Q2 is high level, the 26th transistor M26 conductings, the signal transmission of tertiary voltage end VGL is to the first pull-up section Point P1, the first pull-up node P1 current potential is dragged down.
The grid of the 27th transistor M27 is connected to second pull-down node Q2, the 27th crystal The first end of pipe M27 is connected to the tertiary voltage end VGL, and the second end is connected to the first outfan Gout1.Under second When drawing node Q2 is high level, the 27th transistor M27 conductings, the signal transmission of tertiary voltage end VGL is to the first outfan The first outfan Gout1 of Gout1, Jing exports the low level signal of tertiary voltage end VGL.The 28th transistor M28's Grid is connected to second pull-down node Q2, and the first end of the 28th transistor M28 is connected to the tertiary voltage End VGL, the second end are connected to the first cascade outfan Gout1 '.When second pull-down node Q2 is high level, the 28th Transistor M28 is turned on, and the signal transmission of tertiary voltage end VGL is to the first cascade outfan Gout1 ', the cascade outfans of Jing first Gout1 ' exports the low level signal of tertiary voltage end VGL.
With continued reference to Fig. 2, first output module 105 includes：16th transistor M16 and the first bootstrap capacitor C1, Second output module 205 includes the 31st transistor M31 and the second bootstrap capacitor.
Wherein, the first pole plate of the grid and the first bootstrap capacitor C1 of the 16th transistor M16 is connected to First pull-up node P1, the first end of the 16th transistor M16 are connected to the 3rd signal end CK1, and described Second pole plate of second end of 16 transistor M16 and the first bootstrap capacitor C1 is connected to first outfan Gout1.When the first pull-up node P1 is high level, the first bootstrap capacitor C1 is charged, and the 16th transistor M16 leads Logical, the signal transmission of the 3rd signal end CK1 is to the first outfan Gout1, the first outfans of Jing Gout1 outputs.
First pole plate of the grid and the second bootstrap capacitor C2 of the 31st transistor M31 is connected to described Second pull-up node P2, the first end of the 31st transistor M31 are connected to the 4th signal end CK2, state the 30th Second pole plate of second end of one transistor M31 and the second bootstrap capacitor C2 is connected to the second outfan Gout2. When the second pull-up node P2 is high level, the second bootstrap capacitor C2 is charged, and the 31st transistor M31 conductings, The signal transmission of the 4th signal end CK2 is to the second outfan Gout2, the second outfans of Jing Gout2 outputs.
With continued reference to Fig. 2, the first cascade output module 106 includes the 17th transistor M17, and second cascade is defeated Going out module 206 includes the 30th two-transistor M32.
Wherein, the grid of the 17th transistor M17 is connected to first pull-up node P1, the 17th crystal The first end of pipe M17 is connected to the 3rd signal end CK1, and the second end is connected to the first cascade outfan Gout1 '.When When first pull-up node P1 is high level, the 17th transistor M17 conductings, the signal transmission of the 3rd signal end CK1 is to the first order Connection outfan Gout1 ', Jing first cascade outfan Gout1 ' outputs.
The grid of the 30th two-transistor M32 is connected to second pull-up node P2, the 32nd crystal The first end of pipe M32 is connected to the 4th signal end CK2, and the second end is connected to the second cascade outfan Gout2 '.When When second pull-up node P2 is high level, the 30th two-transistor M32 conductings, the signal transmission of the 4th signal end CK2 to second Cascaded-output end Gout2 ', Jing second cascade outfan Gout2 ' outputs.
In the above-mentioned any one embodiment of the application, the first signal end V1 and secondary signal end V2 that the application is provided The signal of output is clock signal, and the level of the two can be with identical, it is also possible to contrary.It is in order to reduce power consumption in the present embodiment, excellent The level of signal of the first signal end V1 and secondary signal end V2 outputs is selected conversely, and the first signal end V1 and secondary signal The signal of end V2 outputs is frame reverse signal, i.e. after the scanned frame picture of the gate driver circuit, the first signal end The signal of V1 and secondary signal end V2 outputs is each anti-phase.And, it is brilliant that each transistor that the application is provided is both preferably thin film Body pipe.
The all modules of scanning element the embodiment of the present application provided with reference to driving method and composition each The conducting of each transistor of module and cut-off situation are described further.It should be noted that below with the first transistor The 30th two-transistor M32 of M1- are N-type transistor, and, tertiary voltage end V3 and the 4th voltage end V4 output signals are electricity Contrary clock signal, and scanning signal are equalled for illustrating as a example by high level signal.
With reference to shown in Fig. 1, Fig. 2 and Fig. 3, the driving method that the embodiment of the present application is provided is described in detail.Wherein, The driving method that the embodiment of the present application is provided, is applied to above-mentioned scanning element, and the driving method includes：First stage T1, Two-stage T2, phase III T3 and fourth stage T4.
As shown in figure 3, a kind of sequential chart of the forward scan provided for the embodiment of the present application, i.e. along first order subelement It is scanned to second level subelement, wherein, first voltage end FW is high level signal, and second voltage end BW is that low level is believed Number, tertiary voltage end VGL is low level signal.The level phase of the signal of the first signal end V1 and secondary signal end V2 outputs Instead, and the first signal end V1 and secondary signal end V2 output signal be frame reverse signal.
Wherein, when scanning along the first order subelement to second level subelement：
In the first stage T1, high potential of first input module 101 in response to the first control end SET1, and control Connect between first voltage end FW processed and first pull-up node P1, now the first pull-up node P1 is high potential, and first exports Module 105 responds the high potential of first pull-up node P1 and controls the 3rd signal end CK1 and first outfan Gout1 is connected, and now the 3rd signal end CK1 is electronegative potential, i.e., export the 3rd signal end CK1 by the first outfan Gout1 low Level signal.
Meanwhile, the first cascade output module 106 responds the high potential of first pull-up node P1, and controls the described 3rd Signal end CK1 is connected with the described first cascade outfan Gout1 ', exports the 3rd signal by the first cascade outfan Gout1 ' The low level signal of end CK1.
First input module 101 responds the high potential of first control end SET1 and controls the tertiary voltage end VGL is connected with first pull-down node Q1, also, the first input module 101 responds the height electricity of first control end SET1 Position and control the tertiary voltage end VGL and connect with second pull-down node Q2, i.e., in the first stage T1 when, the first drop-down section Electronegative potential is at point Q1 and the second pull-down node Q2.Meanwhile, second input module 201 is in response to the 3rd control end SET2 With the electronegative potential of the 4th control end RESET2, and control to end between the first voltage end FW and second pull-up node P2.
Specifically combine shown in Fig. 2 and Fig. 3, in the first stage T1, the first control end SET1 output high level signal, the second control End RESET1 processed exports low level signal, therefore, the first transistor M1 responds the high level signal conducting of the first control end SET1, The high level signal of first voltage end FW is transferred to into the first pull-up node P1；Afterwards, in the 16th transistor M16 responses first The high level signal conducting of node P1 is drawn, the low level signal of now the 3rd signal end CK1 is exported to the first outfan Gout1, i.e. the first outfan Gout1 export low level signal；Meanwhile, the 17th transistor M17 responds the first pull-up node P1 High level signal conducting, by the low level signal of now the 3rd signal end CK1 output to the first cascade outfan Gout1 ', i.e., First cascade outfan Gout1 ' output low level signals.
First pull-up node P1 charges for the first bootstrap capacitor C1, i.e. the first bootstrapping being connected with the first pull-up node P1 The top crown of electric capacity C1 is high potential, and accordingly, the lower step of the first bootstrap capacitor C1 being connected with the first outfan Gout1 is Electronegative potential.
Also, third transistor M3 responds the high level signal conducting of the first control end SET1, controls tertiary voltage end VGL Connect with the first pull-down node Q1, the 4th transistor M4 responds the high level signal conducting of the first control end SET1, control the 3rd Voltage end VGL and the second pull-down node Q2 are connected, i.e. the first pull-down node Q1 and the second pull-down node Q2 are electronegative potential.
Meanwhile, the 18th transistor M18 responds the electronegative potential of the 3rd control end SET2, controls first voltage end FW and second End between pull-up node P2, the 19th transistor M19 responds the electronegative potential of the 4th control end RESET2, control second voltage end BW End between the second pull-up node P2.
In second stage T2, the first control end SET1 is low level signal, and first voltage end FW is saved with the first pull-up Point P1 ends, and the second control end RESET1 is low level signal, second voltage end BW and the cut-off of the first pull-up node P1, and first is defeated Go out module 105 and control the first pull-up node P1 current potential to be further pulled up, first output module 105 responds described first The high potential of pull-up node P1 and control the 3rd signal end CK1 and the first outfan Gout1 and connect, Jing first is exported End Gout1 exports the high level signal of the 3rd signal end CK1；Also, the first cascade output module 106 responds first pull-up The high potential of node P1, and control the 3rd signal end CK1 and the described first cascade outfan Gout1 ' and connect, the Jing first order Connection outfan Gout1 ' exports the high level signal of the 3rd signal end CK1.
High potential of second input module 201 in response to the 3rd control end SET2, and control first voltage end FW with Connect between second pull-up node P2, now, the second pull-up node P2 is high potential, and second output module 205 responds The high potential of second pull-up node P2 and control the 4th signal end CK2 and the second outfan Gout2 and connect, Jing Second outfan Gout2 exports the low level signal of the 4th signal end CK2；The second cascade output module 206 responds described The high potential of the second pull-up node P2, and control the 4th signal end CK2 and the described second cascade outfan Gout2 ' and connect, The cascade outfan Gout2 ' of Jing second export the low level signal of the 4th signal end CK2.
Meanwhile, the first pull-up control module 102 responds the high potential of the first pull-up node P1 and controls the tertiary voltage End VGL is connected with first pull-down node Q1, also, the second pull-up control module 202 responds the height of the second pull-up node P2 Current potential and control the tertiary voltage end VGL and connect with second pull-down node Q2, i.e., in second stage T2, first is drop-down Electronegative potential is at node Q1 and the second pull-down node Q2.
Specifically with reference to shown in Fig. 2 and Fig. 3, in second stage T2, the first control end SET1 output low level signal, first Voltage end FW and the cut-off of the first pull-up node P1, the second control end RESET1 also export low level signal, second voltage end BW with First pull-up node P1 is ended.The current potential of the first pull-up node P1 is further pulled up by the first bootstrap capacitor C1, the 16th crystal Pipe M16 responds the high level signal conducting of the first pull-up node P1, and the high level signal output of now the 3rd signal end CK1 is arrived First outfan Gout1, i.e. the first outfan Gout1 export high level signal；Meanwhile, the 17th transistor M17 responses first The high level signal conducting of pull-up node P1, the high level signal of now the 3rd signal end CK1 is exported to the first cascaded-output End Gout1 ', i.e., the first cascade outfan Gout1 ' output high level signals.31st transistor M31 responses the second pull-up section The low level signal of now the 4th signal end CK2 is exported the second outfan Gout2, i.e., by the high level signal conducting of point P2 Second outfan Gout2 exports low level signal；Meanwhile, the 30th two-transistor M32 responds the height electricity of the second pull-up node P2 Flat signal conduction, by the low level signal output of now the 4th signal end CK2 to second cascade outfan Gout2 ', the i.e. second level Connection outfan Gout2 ' output low level signals.
Second pull-up node P2 charges for the second bootstrap capacitor C2, i.e. the second bootstrapping being connected with the second pull-up node P2 The top crown of electric capacity C2 is high potential, and accordingly, the lower step of the second bootstrap capacitor C2 being connected with the second outfan Gout2 is Electronegative potential.
In the phase III T3, first input module 101 respond the second control end RESET1 high potential and Control to connect between the second voltage end BW and first pull-up node P1, the low level signal of second voltage end BW is by first The current potential of pull-up node P1 is dragged down.
3rd control end SET2 is low level signal, is ended between first voltage end FW and the second pull-up node P2, the 4th control End RESET2 processed is low level signal, is ended, second output module 205 between second voltage end BW and the second pull-up node P2 Control the second pull-up node P2 current potential to be further pulled up, second output module 205 responds second pull-up node The high potential of P2 and control the 4th signal end CK2 and the second outfan Gout2 and connect, Jing the second outfan Gout2 Export the high level signal of the 4th signal end CK2；The second cascade output module 206 responds second pull-up node P2 High potential, and control the 4th signal end CK2 and the described second cascade outfan Gout2 ' and connect, the cascade outfans of Jing second Gout2 ' exports the high level signal of the 4th signal end CK2.
Specifically, with reference to Fig. 2, the first transistor M1 responds the second control end RESET1 high potential and controls second voltage end Connect between BW and first pull-up node P1, the current potential of the first pull-up node P1 is drawn by the low level signal of second voltage end BW It is low.
And, in phase III T3, the high level signal of the second pull-up node P2 is drawn high again by the second bootstrap capacitor C2； Now, the high level signal difference that the 4th signal end CK2 is exported by the 31st transistor M31 and the 30th two-transistor M32 Export to the cascade outfan Gout2 ' of the second outfan Gout2 and second.
In fourth stage T4, second input module 201 respond the 4th control end RESET2 high potential and Control to connect between the second voltage end BW and second pull-up node P2, the current potential of the second pull-up node P2 is dragged down.
Wherein, the described second drop-down generation module 204 responds the high potential of the secondary signal end V2 and controls described Connect between binary signal end V2 and second pull-down node Q2, now, the second pull-down node Q2 is high potential, and described second is drop-down Control module 203 responds the high potential of second pull-down node Q2, and controls the tertiary voltage end VGL respectively with described the The cascade outfan Gout2 ' conductings of two outfan Gout2 and second, i.e. the cascade outfans of Jing the second outfan Gout2 and second Gout2 ' exports the low level signal of tertiary voltage end VGL；Second pull-up node P2 is electronegative potential, so as to control described second Output module 205 is ended with the 4th signal end CK2, and the second drop-down control module 203 responds the described second drop-down section The current potential of point Q2, is controlled the 4th signal end CK2 and is ended with the described second cascade output module 206；The second drop-down control Molding block 203 respond the second pull-down node Q2 current potential and control the tertiary voltage end VGL respectively with first outfan The cascade outfan Gout1 ' of Gout1 and first are connected, the cascade outfan Gout1 ' of Jing the first outfan Gout1 and first outputs the The low level signal of three voltage end VGL.
Second drop-down generation module 204 responds the current potential of secondary signal end V2, and controls under secondary signal end V2 and second Draw.The second drop-down control module 203 responds the high potential of the second pull-down node Q2, and controls the 3rd Voltage end VGL and the conducting of the second pull-up node P2, the current potential of the second pull-up node P2 are dragged down, tertiary voltage end VGL and second Cascaded-output end Gout2 ' is turned on, cascade outfan Gout2 ' the output low level signals of Jing second, tertiary voltage end VGL and second Outfan Gout2 is turned on, the second outfans of Jing Gout2 output low level signals.
With continued reference to Fig. 2, the 19th transistor M19 responds the 4th control end RESET2 high level signal and controls the Connect between two voltage end BW and second pull-up node P2, the current potential of the second pull-up node P2 is dragged down.Second pull-up node P2 is electronegative potential, so as to control the 31st transistor M31 and the 4th signal end CK2 cut-offs, and controls the 32nd crystal Pipe M32 and the 4th signal end CK2 cut-offs.
Secondary signal end V2 now be high level signal, the 29th transistor M29 and the 30th transistor M30 response The high level signal of secondary signal end V2 is transferred to the second pull-down node Q2 by the high level signal conducting of secondary signal end V2, The current potential of the second pull-down node Q2 is drawn high, the 24th transistor M24 responds the high level signal of the second pull-down node Q2 and leads Logical, control tertiary voltage end VGL and the second outfan Gout2 is connected, the second outfans of Jing Gout2 output tertiary voltage end VGL Low level signal；25th transistor M25 responds the high level signal conducting of the second pull-down node Q2, controls tertiary voltage The cascade outfan Gout2 ' of end VGL and second are connected, and the cascade outfan Gout2 ' of Jing second export the low electricity of tertiary voltage end VGL Ordinary mail number.
27th transistor M27 responds the high level signal conducting of the second pull-down node Q2, controls tertiary voltage end VGL Connect with the first outfan Gout1, the first outfans of Jing Gout1 exports the low level signal of tertiary voltage end VGL；28th Transistor M28 responds the high level signal conducting of the second pull-down node Q2, the cascade outfans of control tertiary voltage end VGL and first Gout1 ' is connected, and the cascade outfan Gout1 ' of Jing first export the low level signal of tertiary voltage end VGL.
It should be noted that in fourth stage T4, the current potential of the first signal end V1 can be high level, and secondary signal end The current potential of V2 is low level, and now, the first drop-down generation module is by the high level output of the first signal end V1 to the first drop-down section Point Q1 so that the transistor turns being connected with the first pull-down node Q1, and then control the first pull-up node P1, the second pull-up node P2, the first outfan Gout1, the second outfan Gout2, the first cascade outfan Gout1 ' and the second cascade outfan Gout2 ' With the 3rd signal end VGL connect, it is ensured that above-mentioned first pull-up node P1, the second pull-up node P2, the first outfan Gout1, The low level signal of the second outfan Gout2, the first cascade outfan Gout1 ' and the second cascade outfan Gout2 ' is more steady It is fixed.
Additionally, the embodiment of the present application additionally provides a kind of gate driver circuit, the n levels that the gate driver circuit includes are swept Retouching in unit, the scanning element described in above-mentioned any embodiment being per one-level scanning element, n is the integer more than or equal to 2.
Wherein, with reference to shown in Fig. 4, a kind of structural representation of the gate driver circuit provided for the embodiment of the present application is fixed The adjacent two-stage scan unit of justice is i-stage scanning element and i+1 level scanning element, and i is the positive integer less than n；
First cascade outfan Gout1 ' of the i-stage scanning element is controlled with the first of the i+1 level scanning element End SET1 processed is connected, and the first cascade outfan Gout1 ' of the i+1 level scanning element is controlled with the second of i-stage scanning element End RESET1 processed is connected；
Second cascade outfan Gout2 ' of the i-stage scanning element is controlled with the 3rd of the i+1 level scanning element End SET2 processed is connected, and the of the second cascade outfan Gout2 ' and i-stage scanning element of the i+1 level scanning element Four control ends RESET2 are connected；
And, the 3rd signal end CK1 of odd level scanning element is same signal end and the 4th signal end CK2 is same Signal end, the 3rd signal end CK1 of even level scanning element are same signal end and the 4th signal end CK2 is same signal end. Wherein, the 3rd signal end of odd level scanning element is different from the signal of the 3rd signal end of even level scanning element, general, 3rd signal end of odd level scanning element is contrary with the signal of the 3rd signal end of even level scanning element；Likewise, odd number 4th signal end of level scanning element is different from the signal of the 4th signal end of even level scanning element, and general, odd level is swept The 4th signal end for retouching unit is contrary with the signal of the 4th signal end of even level scanning element.
Wherein, when scanning circuit multi-stage cascade, need the 3rd signal end CK1 and the 4th signal end CK2, and, the The signal of one control end SET1, the second control end RESET1, the 3rd control end SET2 and the 4th control end RESET2 is overlapped Output, it is ensured that the scanning circuit of Adjacent Concatenation realizes the function of shift LD, similar to prior art to this signal overlap mode, Therefore the application does not make unnecessary repeating.
It should be noted that in the gate driver circuit that the embodiment of the present application is provided, in forward scan, the first order is swept The first control end SET1 and the 3rd control end SET2 for retouching unit provides initial control signal by outer signal line.This Outward, as all outfans for needing the n level scanning elements for cascading in scanning process export scanning signal step by step, therefore, During forward scan, after the corresponding 3rd signal end CK1 outputs scanning signal of first order scanning element, its 4th signal end CK2 is exported Scanning signal；Likewise, its 4th signal end after the corresponding 3rd signal end CK1 outputs scanning signal of second level scanning element After CK2 exports scanning signal, also, the 4th signal end CK2 output scanning signals of first order scanning element, second level scanning is single The 3rd signal end CK1 output scanning signals of unit.
Additionally, in actual applications, what the 3rd signal end CK1 and the 4th signal end CK2 that the application is provided was exported Signal phase difference is 180 degree, and wherein, the frequency of the signal of the 3rd signal end CK1 and the 4th signal end CK2 outputs is identical, and During forward scan, the 4th signal end CK2 postpones Preset Time output compared to the 3rd signal end CK1.Multistage for cascade is swept Unit is retouched, in forward scan, the 3rd signal end CK1 of rear stage scanning element is believed compared to the 4th of previous stage scanning element Number end CK2 postpone Preset Time output.Wherein, the application is not particularly limited for Preset Time.
The embodiment of the present application provides a kind of scanning element, gate driver circuit and including raster data model disclosed above electricity The display device on road, scanning element include first order subelement and second level subelement, and scanning element can be along first order The direction of unit to second level subelement exports scanning signal step by step, and in scanning process, first order subelement and the second level Subelement cooperates, and makes when prime subelement exports scanning signal, and another grade of subelement does not export scanning signal.This Shen Please the technical scheme that provides of embodiment, scanning element can export two-stage scan signal step by step, and by first order subelement and Second level subelement interacts and the structure of simplified scanning element, and meets the multifarious demand of gate driver circuit.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention. Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one The most wide scope for causing.

Claims (11)

1. a kind of scanning element, it is characterised in that including first order subelement and second level subelement, wherein, the first order Subelement includes：First input module, the first pull-up node, the first pull-up control module, the first pull-down node, the first drop-down control Molding block, the first drop-down generation module, the first output module, the first outfan, the first cascade output module and the first cascade are defeated Go out end；The second level subelement includes：It is second input module, the second pull-up node, the second pull-up control module, second drop-down Node, the second drop-down control module, the second drop-down generation module, the second output module, the second outfan, the second cascaded-output mould Block and the second cascade outfan；
Current potential of first input module in response to the first control end, and control first voltage end and first pull-up node On-state, and control tertiary voltage end respectively with first pull-down node and the connection shape of second pull-down node State, and in response to the current potential of the second control end, and the on-state at second voltage end and first pull-up node is controlled, its In, the level at the first voltage end and second voltage end is contrary；
Current potential of the first pull-up control module in response to first pull-up node, and control the tertiary voltage end difference With the on-state of first pull-down node, the first drop-down generation module and the second drop-down generation module；
Current potential of the first drop-down control module in response to first pull-down node, and control the tertiary voltage end difference With first pull-up node, first output module, the first cascade outfan, the second pull-up node, the second output End, and second cascade outfan on-state；
Current potential of the first drop-down generation module in response to the first signal end, and control first signal end and described first The on-state of pull-down node, wherein, in the described first pull-up control module in response to the first pull-up node current potential, and controls Make the tertiary voltage end respectively with first pull-down node, the first drop-down generation module and the second drop-down life When connecting into module, the current potential of first pull-down node and the second pull-down node is the current potential at the tertiary voltage end；
First output module controls the 3rd signal end with first outfan in response to the current potential of the first pull-up node On-state；
The first cascade output module controls the 3rd signal end and institute in response to the current potential of first pull-up node State the on-state of the first cascade outfan；
Current potential of second input module in response to the 3rd control end, and the first voltage end is controlled with the described second pull-up The on-state of node, and in response to the current potential of the 4th control end, and control second voltage end and second pull-up node On-state；
Current potential of the second pull-up control module in response to the second pull-up node, and control the tertiary voltage end respectively with institute State the on-state of the second pull-down node, the second drop-down generation module and the first drop-down generation module；
Current potential of the second drop-down control module in response to the second pull-down node, and control the tertiary voltage end respectively with institute State the second pull-up node, the second output module, second cascade outfan, the first pull-up node, the first outfan, first cascade it is defeated Go out the on-state at end；
Current potential of the second drop-down generation module in response to secondary signal end, and control the secondary signal end and described second The on-state of pull-down node, wherein, pulls up current potential of the control module in response to second pull-up node described second, and Control the tertiary voltage end respectively with second pull-down node, the second drop-down generation module and the first drop-down life When connecting into module, the current potential of second pull-down node and the first pull-down node is the current potential at the tertiary voltage end；
Current potential of second output module in response to second pull-up node, and the 4th signal end is controlled with described the The on-state of two outfans；
Current potential of the second cascade output module in response to second pull-up node, and control the 4th signal end and institute State the on-state of the second cascade outfan.
2. scanning element according to claim 1, it is characterised in that first input module include the first transistor, Transistor seconds, third transistor and the 4th transistor；
The grid of the first transistor is connected to first control end, and the first end of the first transistor is connected to described First voltage end, the second end are connected to first pull-up node；
The grid of the transistor seconds is connected to second control end, and the transistor seconds first end is connected to described Two voltage ends, second segment are connected to first pull-up node；
The grid of the third transistor is connected to first control end, and the first end of the third transistor is connected to described Tertiary voltage end, the second end are connected to first pull-down node；
The grid of the 4th transistor is connected to first control end, and the first end of the 4th transistor is connected to described Tertiary voltage end, the second end are connected to second pull-down node；
And, second input module includes the 18th transistor and the 19th transistor；
The grid of the 18th transistor is connected to the 3rd control end, the 18th transistor first voltage end, and Two ends are connected to second pull-up node；
The grid of the 19th transistor is connected to the 4th control end, the first end connection of the 19th transistor To the second voltage end, the second end is connected to second pull-up node.
3. scanning element according to claim 1, it is characterised in that the first pull-up control module includes the 5th crystal Pipe, the 6th transistor and the 7th transistor；
The grid of the 5th transistor is connected to first pull-up node, and the first end of the 5th transistor is connected to institute Tertiary voltage end is stated, the second end is connected to first pull-down node；
The grid of the 6th transistor is connected to first pull-up node, and the first end of the 6th transistor is connected to institute Tertiary voltage end is stated, the second end is connected to the described first drop-down generation module；
The grid of the 7th transistor is connected to first pull-up node, and the first end of the 7th transistor is connected to institute Tertiary voltage end is stated, the second end is connected to the described second drop-down generation module；
And, the second pull-up control module includes the 20th transistor, the 21st transistor and the 20th two-transistor；
The grid of the 20th transistor is connected to second pull-up node, the first end connection of the 20th transistor To the tertiary voltage end, the second end is connected to the described second drop-down generation module；
The grid of the 21st transistor is connected to second pull-up node, the first end of the 21st transistor The tertiary voltage end is connected to, the second end is connected to second pull-down node；
The grid of the 20th two-transistor is connected to second pull-up node, the first end of the 20th two-transistor The tertiary voltage end is connected to, the second end is connected to the described first drop-down generation module.
4. scanning element according to claim 1, it is characterised in that the first drop-down control module includes the 8th crystal Pipe, the 9th transistor, the tenth transistor, the 11st transistor, the tenth two-transistor, the 13rd transistor；
The grid of the 8th transistor is connected to first pull-down node, and the first end of the 8th transistor is connected to institute Tertiary voltage end is stated, the second end is connected to first pull-up node；
The grid of the 9th transistor is connected to first pull-down node, and the first end of the 9th transistor is connected to institute Tertiary voltage end is stated, the second end is connected to first outfan；
The grid of the tenth transistor is connected to first pull-down node, and the first end of the tenth transistor is connected to institute Tertiary voltage end is stated, the second end is connected to the first cascade outfan；
The grid of the 11st transistor is connected to first pull-down node, the first end connection of the 11st transistor To the tertiary voltage end, the second end is connected to second pull-up node；
The grid of the tenth two-transistor is connected to first pull-down node, the first end connection of the tenth two-transistor To the tertiary voltage end, the second end is connected to second outfan；
The grid of the 13rd transistor is connected to first pull-down node, the first end connection of the 13rd transistor To the tertiary voltage end, the second end is connected to the second cascade outfan；
And, the second drop-down control module includes the 23rd transistor, the 24th transistor, the 25th crystal Pipe, the 26th transistor, the 27th transistor and the 28th transistor；
The grid of the 23rd transistor is connected to second pull-down node, the first end of the 23rd transistor The tertiary voltage end is connected to, the second end is connected to second pull-up node；
The grid of the 24th transistor is connected to second pull-down node, the first end of the 24th transistor The tertiary voltage end is connected to, the second end is connected to second outfan；
The grid of the 25th transistor is connected to second pull-down node, the first end of the 25th transistor The tertiary voltage end is connected to, the second end is connected to the second cascade outfan；
The grid of the 26th transistor is connected to second pull-down node, the first end of the 26th transistor The tertiary voltage end is connected to, the second end is connected to first pull-up node；
The grid of the 27th transistor is connected to second pull-down node, the first end of the 27th transistor The tertiary voltage end is connected to, the second end is connected to first outfan；
The grid of the 28th transistor is connected to second pull-down node, the first end of the 28th transistor The tertiary voltage end is connected to, the second end is connected to the first cascade outfan.
5. scanning element according to claim 3, it is characterised in that the first drop-down generation module includes that the 14th is brilliant Body pipe and the 15th transistor；
The grid of the 14th transistor is connected to first signal end, and the first end of the 14th transistor is connected to First signal end, the second end of the 14th transistor are connected to the grid of the 15th transistor, and the described tenth The first end of five transistors is connected to first signal end, and the second end is connected to first pull-down node；
The second drop-down generation module includes the 29th transistor and the 30th transistor；
The grid of the 30th transistor is connected to the secondary signal end, and the first end of the 30th transistor is connected to The secondary signal end, the second end of the 30th transistor are connected to the grid of the 29th transistor, and described The first end of 29 transistors is connected to the secondary signal end, and the second end is connected to second pull-down node.
6. scanning element according to claim 5, it is characterised in that the breadth length ratio of the 6th transistor is more than described the The breadth length ratio of 14 transistors, the breadth length ratio of the 20th transistor are more than the breadth length ratio of the 30th transistor.
7. scanning element according to claim 1, it is characterised in that first output module includes the 16th transistor With the first bootstrap capacitor, second output module includes the 31st transistor and the second bootstrap capacitor；
First pole plate of the grid and first bootstrap capacitor of the 16th transistor is connected to the first pull-up section Point, the first end of the 16th transistor are connected to the 3rd signal end, the second end of the 16th transistor and institute The second pole plate for stating the first bootstrap capacitor is connected to first outfan；
First pole plate of the grid and second bootstrap capacitor of the 31st transistor is connected to second pull-up Node, the first end of the 31st transistor are connected to the 4th signal end, state the second end of the 31st transistor Second outfan is connected to the second pole plate of second bootstrap capacitor.
8. scanning element according to claim 1, it is characterised in that the first cascade output module includes that the 17th is brilliant Body pipe, the second cascade output module include the 30th two-transistor；
The grid of the 17th transistor is connected to first pull-up node, the first end connection of the 17th transistor To the 3rd signal end, the second end is connected to the first cascade outfan；
The grid of the 30th two-transistor is connected to second pull-up node, the first end of the 30th two-transistor The 4th signal end is connected to, the second end is connected to the second cascade outfan.
9. a kind of gate driver circuit, it is characterised in that in the n level scanning elements that the gate driver circuit includes, per one-level Scanning element is the scanning element described in any one of claim 1-8, and n is the integer more than or equal to 2.
10. gate driver circuit according to claim 9, it is characterised in that it is i-stage to define adjacent two-stage scan unit Scanning element and i+1 level scanning element, i is the positive integer less than n；
First cascade outfan of the i-stage scanning element is connected with the first control end of the i+1 level scanning element, institute The the first cascade outfan for stating i+1 level scanning element is connected with the second control end of i-stage scanning element；
Second cascade outfan of the i-stage scanning element is connected with the 3rd control end of the i+1 level scanning element, institute The the second cascade outfan for stating i+1 level scanning element is connected with the 4th control end of the i-stage scanning element；
And, the 3rd signal end of odd level scanning element is same signal end and the 4th signal end is same signal end, even number 3rd signal end of level scanning element is for same signal end and the 4th signal end is same signal end.
11. a kind of display devices, it is characterised in that including the gate driver circuit of claim 9 or 10.
CN201710014848.3A 2017-01-09 2017-01-09 Scanning unit, gate drive circuit and display device Active CN106531055B (en)

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