CN111312188A - GOA circuit and display device - Google Patents
GOA circuit and display device Download PDFInfo
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- CN111312188A CN111312188A CN202010242085.XA CN202010242085A CN111312188A CN 111312188 A CN111312188 A CN 111312188A CN 202010242085 A CN202010242085 A CN 202010242085A CN 111312188 A CN111312188 A CN 111312188A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
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Abstract
The application discloses a GOA circuit and a display device, which comprises a pull-up control module, a pull-up module, a pull-down module and a pull-down maintaining module, wherein the pull-down maintaining module comprises a first pull-down maintaining module and a second pull-down maintaining module, the first pull-down maintaining module is connected with a first potential signal, the second pull-down maintaining module is connected with a second potential signal, and the phase of the first potential signal is opposite to that of the second potential signal; compared with the prior art, the first pull-down maintaining module and the second pull-down maintaining module which can be used alternately are arranged, so that the stability of the GOA circuit is improved, and the service life of the display device is prolonged.
Description
Technical Field
The present application relates to a display driver technology field, and in particular, to a GOA circuit and a display device having the same.
Background
With the development of flat panel display technology, high resolution, high contrast, high refresh rate, narrow frame and thinness have become the development trend of flat panel display, liquid crystal display is still the mainstream product of flat panel display at present, and is gradually developed from 4K display to 8K display, the characteristic of narrow frame is required to be kept under the condition of extremely high resolution, and it is a better solution at present to use a simplified version of a GOA circuit as a panel driving circuit.
In the present simplified version GOA circuit, the module is maintained in the drop-down needs to continue work under the high potential for scanning signal can continue to output stable low current when out of work, guarantees display device's normal demonstration, but 8K shows and uses higher voltage, and the switching tube device in the module is maintained in the drop-down is because the effect that continuously receives the high potential for a long time, and the easy inefficacy leads to the GOA circuit unstability, and display device shows unusually.
Disclosure of Invention
The embodiment of the application provides a GOA circuit and a display device, and aims to solve the technical problem that in the prior art, a switching tube device fails due to the fact that the switching tube device continuously receives a high potential for a long time, so that the output of the GOA circuit is abnormal, and the display is further influenced.
In order to solve the foregoing technical problem, an embodiment of the present application provides a GOA circuit, where the GOA circuit includes n cascaded GOA units, and n is a positive integer, where the nth GOA unit includes: the pull-up control module is electrically connected with the current-level control signal and pulls up the current-level control signal to a high potential; the pull-up module outputs the scanning signal of the current stage according to the control of the control signal of the current stage; the pull-down module is electrically connected with the current-stage control signal and pulls down the current-stage control signal to a low potential; the pull-down maintaining module comprises a first pull-down maintaining module and a second pull-down maintaining module, wherein the first pull-down maintaining module receives a first potential signal and maintains the current-stage control signal and the current-stage scanning signal at a low potential according to the control of the first potential signal, the second pull-down maintaining module receives a second potential signal and maintains the current-stage control signal and the current-stage scanning signal at a low potential according to the control of the second potential signal, and the phase of the first potential signal is opposite to that of the second potential signal.
In an embodiment of the present application, the first pull-down maintaining module includes an eleventh switch tube and a twelfth switch tube, wherein a gate and a source of the eleventh switch tube are connected to the first potential signal, a drain of the eleventh switch tube is connected to a common node, a gate of the twelfth switch tube is connected to the current-stage control signal, a source of the twelfth switch tube is connected to a low-potential signal, and a drain of the twelfth switch tube is connected to the common node.
In an embodiment of the present application, the second pull-down maintaining module includes a thirteenth switch tube and a fourteenth switch tube, wherein a gate and a source of the thirteenth switch tube are connected to the second potential signal, a drain of the thirteenth switch tube is connected to the common node, a gate of the fourteenth switch tube is connected to the current-level control signal, a source of the fourteenth switch tube is connected to the low potential signal, and a drain of the fourteenth switch tube is connected to the common node.
In an embodiment of the present application, the pull-down maintaining module further includes a fifteenth switching tube and a sixteenth switching tube, wherein gates of the fifteenth switching tube and the sixteenth switching tube are both connected to the common node, sources of the fifteenth switching tube and the sixteenth switching tube are both connected to the low potential signal, a drain of the fifteenth switching tube is connected to the present-stage control signal, and a drain of the sixteenth switching tube is connected to the present-stage scanning signal.
In an embodiment of the present application, the pull-up control module includes a twenty-first switching tube, a gate of the twenty-first switching tube is connected to a scanning signal of the n-6 th-level GOA unit, a source of the twenty-first switching tube is connected to a high potential signal, and a drain of the twenty-first switching tube is connected to the current-level control signal.
In an embodiment of the present application, the pull-up module includes a thirty-first switch transistor, a gate of the thirty-first switch transistor is connected to the present-stage control signal, a source of the thirty-first switch transistor is connected to a clock signal, and a drain of the thirty-first switch transistor is connected to the present-stage scan signal.
In an embodiment of the present application, the pull-down module includes a forty-first switching tube, and a gate of the forty-first switching tube is connected to the scan signal of the (n + 8) -th stage GOA unit, a source of the forty-first switching tube is connected to the low potential signal, and a drain of the forty-first switching tube is connected to the present stage control signal.
In an embodiment of the present application, the nth GOA unit further includes a bootstrap capacitor, and two ends of the bootstrap capacitor are respectively connected to the current-stage control signal and the current-stage scan signal.
In one embodiment of the present application, the first potential signal is at a high potential for a half period and at a low potential for another half period in an alternating period, the second potential signal is opposite in phase to the first potential signal in the alternating period, and the alternating period is at least 2 times or an integer multiple of 2 times of the scanning period.
According to the above object of the present application, there is provided a display device including the GOA circuit.
The beneficial effect of this application: this application can alternate use maintain module and second drop-down through setting up first drop-down, has avoided same switch tube device to last for a long time to receive the effect of high potential, has prolonged the life of switch tube device, has improved the stability of GOA circuit, has improved display device's life-span.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a GOA circuit unit according to an embodiment of the present disclosure.
Fig. 2 is a timing diagram of signals of the GOA circuit unit according to the embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The embodiment of the application aims at the existing GOA circuit, and the switch tube device in the pull-down maintaining module continuously receives high voltage for a long time, so that the GOA circuit is easy to damage, the instability of the GOA circuit is caused, and the service life of the display device cannot be guaranteed.
In order to solve the foregoing technical problem, an embodiment of the present application provides a GOA circuit, where the GOA circuit includes n cascaded GOA units, and n is a positive integer, where the nth GOA unit includes:
the pull-up control module is electrically connected with the current-level control signal and pulls up the current-level control signal to a high potential;
the pull-up module outputs the scanning signal of the current stage according to the control of the control signal of the current stage;
the pull-down module is electrically connected with the current-stage control signal and pulls down the current-stage control signal to a low potential;
the pull-down maintaining module comprises a first pull-down maintaining module and a second pull-down maintaining module, wherein the first pull-down maintaining module receives a first potential signal and maintains the current-stage control signal and the current-stage scanning signal at a low potential according to the control of the first potential signal, the second pull-down maintaining module receives a second potential signal and maintains the current-stage control signal and the current-stage scanning signal at a low potential according to the control of the second potential signal, and the phase of the first potential signal is opposite to that of the second potential signal.
Specifically, referring to fig. 1, the nth GOA unit includes a pull-up control module 20, a pull-up module 30, a pull-down module 40, and a pull-down maintaining module 10, where the pull-up control module 20 is electrically connected to the current-stage control signal Qn and pulls up the current-stage control signal Qn to a high potential, the pull-up module 30 outputs the current-stage scanning signal Gn according to the control of the current-stage control signal Qn, and the pull-down module 40 is electrically connected to the current-stage control signal Qn and pulls down the current-stage control signal Qn to a low potential.
The pull-down maintaining module 10 includes a first pull-down maintaining module and a second pull-down maintaining module, wherein the first pull-down maintaining module receives a first potential signal LC1 and maintains the present-stage control signal Qn and the present-stage scan signal Gn at a low potential according to the control of the first potential signal LC1, and the second pull-down maintaining module receives a second potential signal LC2 and maintains the present-stage control signal Qn and the present-stage scan signal Gn at a low potential according to the control of the second potential signal LC2, wherein the phase of the first potential signal LC1 is opposite to the phase of the second potential signal LC 2.
In implementing the application process, among the present simplified version GOA, because the setting of drive power, so pull down the effect that receives the high voltage that the switching tube device in maintaining the module will last for a long time, very easily lead to pull down to maintain the module inefficacy, lead to the GOA circuit unstability, and then influence display device's life, and this application embodiment provides a GOA circuit, through set up first pull down that uses in turn in pulling down maintaining the module and pull down maintaining the module with the second, the switching tube device in having avoided pulling down maintaining the module lasts for a long time and receives the effect of high voltage, thereby the life of switching tube device has been increased, the stability of GOA circuit has been improved, display device's life has been prolonged.
Further, with reference to fig. 1, a structure of the GOA circuit unit according to the embodiment of the present disclosure will be described in detail.
The pull-up control module 20 includes a twenty-first switch transistor T21, a gate of the twenty-first switch transistor T21 receives a scan signal Gn-6 of the nth-6 th GOA unit, a source of the twenty-first switch transistor T21 receives a high potential signal VGH, a drain of the twenty-first switch transistor T21 is connected to the present-stage control signal Qn, and the twenty-first switch transistor T21 outputs the high potential signal VGH to the present-stage control signal Qn according to control of the scan signal Gn-6 of the nth-6 th GOA unit, so as to pull up the present-stage control signal Qn to a high potential.
The pull-up module 30 includes a thirty-first switch T31, a gate of the thirty-first switch T31 is connected to the present-stage control signal Qn, a source of the thirty-first switch T31 is connected to a clock signal CK, a drain of the thirty-first switch T31 is connected to the present-stage scan signal Gn, and the thirty-first switch T31 outputs the clock signal CK to the present-stage scan signal Gn according to the control of the present-stage control signal Qn.
The pull-down module 40 includes a forty-first switch transistor T41, a gate of the forty-first switch transistor T41 is connected to the scan signal Gn +8 of the n +8 th GOA unit, a source of the forty-first switch transistor T41 is connected to the low potential signal VSS, a drain of the forty-first switch transistor T41 is connected to the present-stage control signal Qn, and the forty-first switch transistor T41 outputs the low potential signal VSS to the present-stage control signal Qn according to the control of the scan signal Gn +8 of the n +8 th GOA unit, so as to pull down the present-stage control signal Qn to a low potential.
Since the GOA circuit is designed to be asymmetric pull-down, the current-stage control signal Qn is pulled down later, so that the gate of the forty-first switching transistor T41 is connected to the scan signal Gn +8 of the n + 8-th-stage GOA unit, and the twenty-first switching transistor T21 is normally charged, and the gate thereof is connected to the scan signal Gn-6 of the n-6-th-stage GOA unit.
The pull-down maintaining module 10 includes a first pull-down maintaining module and a second pull-down maintaining module, and the first pull-down maintaining module includes an eleventh switch tube T11 and a twelfth switch tube T12, wherein a gate and a source of the eleventh switch tube T11 are both connected to the first potential signal LC1, a drain of the eleventh switch tube T11 is connected to a common node P to output the first potential signal LC1 to the common node P according to the control of the first potential signal LC1, a gate of the twelfth switch tube T12 is connected to the present-stage control signal Qn, a source of the twelfth switch tube T12 is connected to the low-potential signal VSS, and a drain of the twelfth switch tube T12 is connected to the common node P to output the low-potential signal VSS to the common node P according to the control of the present-stage control signal Qn; the second pull-down maintaining module includes a thirteenth switch tube T13 and a fourteenth switch tube T14, a gate and a source of the thirteenth switch tube T13 are connected to the second potential signal LC2, a drain of the thirteenth switch tube T13 is connected to the common node P, so as to output the second potential signal LC2 to the common node P according to the control of the second potential signal LC2, a gate of the fourteenth switch tube T14 is connected to the present-stage control signal Qn, a source of the fourteenth switch tube T14 is connected to the low-potential signal VSS, and a drain of the fourteenth switch tube T14 is connected to the common node P, so as to output the low-potential signal VSS to the common node P according to the control of the present-stage control signal Qn, wherein a phase of the first potential signal LC1 is opposite to a phase of the second potential signal LC 2.
In addition, the pull-down maintaining module 10 further includes a fifteenth switch tube T15 and a sixteenth switch tube T16, wherein a gate of the fifteenth switch tube T15 is connected to the common node P, a source of the fifteenth switch tube T15 is connected to the low-potential signal VSS, a drain of the fifteenth switch tube T15 is connected to the present-stage control signal Qn, so as to output the low-potential signal VSS to the present-stage control signal Qn according to the control of the potential signal of the common node P, a gate of the sixteenth switch tube T16 is connected to the common node P, a source of the sixteenth switch tube T16 is connected to the low-potential signal VSS, and a drain of the sixteenth switch tube T16 is connected to the present-stage scanning signal Gn, so as to output the low-potential signal VSS to the present-stage scanning signal Gn according to the control of the potential signal of the common node P.
The nth-level GOA unit further includes a bootstrap capacitor Ct, and two ends of the bootstrap capacitor Ct are respectively connected to the current-level control signal Qn and the current-level scanning signal Gn.
It should be noted that, the first potential signal LC1 is at a high potential in a half period of an alternating period, and the other half period is at a low potential, the second potential signal LC2 is opposite in phase to the first potential signal LC1 in the alternating period, and the alternating period is at least 2 times or an integer multiple of 2 times of the scanning period, that is, the alternating period may be 2 frames or an integer multiple of 2 frames, and the alternating period may have other arrangements.
Next, an operation process of the GOA circuit unit provided in the embodiment of the present application is described in detail with reference to fig. 1 and fig. 2.
When the gate of the twenty-first switch transistor T21 receives the scan signal Gn-6 of the n-6 th GOA unit as a high potential, the twenty-first switch transistor T21 is turned on, and outputs the high potential signal VGH received by the source thereof to the current-stage control signal Qn connected to the drain thereof, so as to pull up the current-stage control signal Qn to a high potential.
The gate of the thirty-first switch transistor T31 receives the current-stage control signal Qn, and since the current-stage control signal Qn is at a high level, the thirty-first switch transistor T31 is turned on, and outputs the clock signal CK received by the source thereof to the current-stage scan signal Gn connected to the drain thereof, so as to complete the output of the current-stage scan signal Gn.
And the gates of the twelfth switch T12 and the fourteenth switch T14 are both connected to the present-stage control signal Qn, so that the twelfth switch T12 and the fourteenth switch T14 are both turned on and output the low-potential signal VSS to the common node P, the gates of the fifteenth switch T15 and the sixteenth switch T16 are both connected to the common node P, and when the potential signal of the common node P is at a low potential, the fifteenth switch T15 and the sixteenth switch T16 are both not turned on.
When the gate of the forty-first switch transistor T41 is connected to the scan signal Gn +8 of the n +8 th GOA unit and is at a high potential, the forty-first switch transistor T41 is turned on, and outputs the low potential signal VSS received by the source thereof to the drain thereof, which is connected to the present-stage control signal Qn, so as to pull down the present-stage control signal Qn to a low potential.
When the gates of the twelfth and fourteenth switching tubes T12 and T14 are connected to the present-stage control signal Qn, the twelfth and fourteenth switching tubes T12 and T14 are both in a non-conducting state, and in this case, in a period T1, the first potential signal LC1 is at a high potential, the second potential signal LC2 is at a low potential, the eleventh switching tube T11 is conducting, the thirteenth switching tube T13 is turned off, the eleventh switching tube T11 outputs the first potential signal LC1 to the common node P, and pulls up the potential of the common node P to a high potential, the fifteenth switching tube T15 and the sixteenth switching tube T16 are both conducting, the fifteenth switching tube T15 outputs the low potential signal VSS to the present-stage control signal Qn, and the sixteenth switching tube T16 outputs the low potential signal VSS to the present-stage scanning signal VSS, so as to maintain the present-level control signal Qn and the present-level scanning signal Gn at low potentials, so as to ensure the normal operation of the display, when the first potential signal LC1 is at a low potential, the second potential signal LC2 is at a high potential, the thirteenth switching tube T13 is turned on, the eleventh switching tube T11 is turned off, the thirteenth switching tube T13 outputs the second potential signal LC2 to a common node P, the potential of the common node P is pulled up to a high potential, both the fifteenth switching tube T15 and the sixteenth switching tube T16 are turned on, the fifteenth switching tube T15 outputs the low potential signal VSS to the present-level control signal Qn, the sixteenth switching tube T16 outputs the low potential signal VSS to the present-level scanning signal Gn, so as to maintain the present-level control signal Qn and the present-level scanning signal Gn at a low potential, to ensure the normal operation of the display.
The embodiment of the present application provides only one potential alternation setting scheme for the first potential signal LC1 and the second potential signal LC2, but is not limited thereto, wherein the alternation duration, alternation period and potential level of the potential signal can be adjusted accordingly, and can be set according to actual situations.
To sum up, the embodiment of the present application provides a GOA circuit, through setting up the first pull-down maintaining module and the second pull-down maintaining module that can use alternately for eleventh switching tube T11 and thirteenth switching tube T13 can use alternately, avoid the effect that receives the high potential that one of them switching tube device lasts for a long time, have improved the life of switching tube device among the pull-down maintaining module, have improved the stability of GOA circuit.
In addition, an embodiment of the present application further provides a display device, and the display device includes the GOA circuit described in the above embodiments, and the structure and principle thereof are the same, and are not described herein again.
The display device that this application embodiment provided with display device has improved display device's life, just the GOA circuit is carried out the design on the GOA circuit of simplifying the version, maintains the alternative work of module through two pulldowns, has improved the stability of GOA circuit, just switching tube device in the GOA circuit is less, has very big space advantage, realization narrow frame display device that can be further.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The foregoing detailed description is directed to a GOA circuit and a display device having the same provided in the embodiments of the present application, and specific examples are applied herein to illustrate the principles and implementations of the present application, and the description of the foregoing embodiments is only used to help understand the technical solutions and core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A GOA circuit, comprising n cascaded GOA units, where n is a positive integer, and wherein an nth stage of GOA units comprises:
the pull-up control module is electrically connected with the current-level control signal and pulls up the current-level control signal to a high potential;
the pull-up module outputs the scanning signal of the current stage according to the control of the control signal of the current stage;
the pull-down module is electrically connected with the current-stage control signal and pulls down the current-stage control signal to a low potential;
the pull-down maintaining module comprises a first pull-down maintaining module and a second pull-down maintaining module, wherein the first pull-down maintaining module receives a first potential signal and maintains the current-stage control signal and the current-stage scanning signal at a low potential according to the control of the first potential signal, the second pull-down maintaining module receives a second potential signal and maintains the current-stage control signal and the current-stage scanning signal at a low potential according to the control of the second potential signal, and the phase of the first potential signal is opposite to that of the second potential signal.
2. The GOA circuit of claim 1, wherein the first pull-down sustain module comprises an eleventh switch and a twelfth switch, wherein a gate and a source of the eleventh switch are connected to the first potential signal, a drain of the eleventh switch is connected to a common node, a gate of the twelfth switch is connected to the present-stage control signal, a source of the twelfth switch is connected to a low-potential signal, and a drain of the twelfth switch is connected to the common node.
3. The GOA circuit of claim 2, wherein the second pull-down sustain module comprises a thirteenth switch transistor and a fourteenth switch transistor, wherein a gate and a source of the thirteenth switch transistor are connected to the second potential signal, a drain of the thirteenth switch transistor is connected to the common node, a gate of the fourteenth switch transistor is connected to the present-stage control signal, a source of the fourteenth switch transistor is connected to the low potential signal, and a drain of the fourteenth switch transistor is connected to the common node.
4. The GOA circuit of claim 3, wherein the pull-down maintaining module further comprises a fifteenth switch tube and a sixteenth switch tube, wherein gates of the fifteenth switch tube and the sixteenth switch tube are both connected to the common node, sources of the fifteenth switch tube and the sixteenth switch tube are both connected to the low-potential signal, a drain of the fifteenth switch tube is connected to the present-stage control signal, and a drain of the sixteenth switch tube is connected to the present-stage scan signal.
5. The GOA circuit according to claim 1, wherein the pull-up control module comprises a twenty-first switch tube, a gate of the twenty-first switch tube is connected to the scanning signal of the GOA unit of the (n-6) th stage, a source of the twenty-first switch tube is connected to the high potential signal, and a drain of the twenty-first switch tube is connected to the current-stage control signal.
6. The GOA circuit of claim 1, wherein the pull-up module comprises a thirty-first switch, a gate of the thirty-first switch is connected to the present-stage control signal, a source of the thirty-first switch is connected to a clock signal, and a drain of the thirty-first switch is connected to the present-stage scan signal.
7. The GOA circuit of claim 1, wherein the pull-down module comprises a forty-first switch tube, a gate of the forty-first switch tube is connected to a scan signal of an n +8 GOA unit, a source of the forty-first switch tube is connected to a low-potential signal, and a drain of the forty-first switch tube is connected to the present-stage control signal.
8. The GOA circuit of claim 1, wherein the n-th GOA unit further comprises a bootstrap capacitor, and two ends of the bootstrap capacitor are respectively connected to the current-stage control signal and the current-stage scan signal.
9. The GOA circuit of claim 1, wherein the first potential signal is high for one half of an alternating period and low for another half of the alternating period, wherein the second potential signal is opposite in phase to the first potential signal for the alternating period, and wherein the alternating period is at least 2 times the scan period or an integer multiple of 2.
10. A display device, characterized in that the display device comprises a GOA circuit according to any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010242085.XA CN111312188A (en) | 2020-03-31 | 2020-03-31 | GOA circuit and display device |
| PCT/CN2020/084736 WO2021196280A1 (en) | 2020-03-31 | 2020-04-14 | Goa circuit and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010242085.XA CN111312188A (en) | 2020-03-31 | 2020-03-31 | GOA circuit and display device |
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| CN111312188A true CN111312188A (en) | 2020-06-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111986623A (en) * | 2020-08-04 | 2020-11-24 | 邵阳学院 | GOA circuit with multi-channel line scanning signal output |
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Also Published As
| Publication number | Publication date |
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| WO2021196280A1 (en) | 2021-10-07 |
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