CN114241968A - GOA circuit with adjusting function, adjusting method and display panel - Google Patents
GOA circuit with adjusting function, adjusting method and display panel Download PDFInfo
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- CN114241968A CN114241968A CN202111536912.7A CN202111536912A CN114241968A CN 114241968 A CN114241968 A CN 114241968A CN 202111536912 A CN202111536912 A CN 202111536912A CN 114241968 A CN114241968 A CN 114241968A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
Abstract
The embodiment of the application discloses a GOA circuit with an adjusting function, an adjusting method and a display panel; the embodiment of the application comprises a level conversion module, a processing module and a plurality of GOA circuit groups working under different preset working level signals, wherein the level conversion module is connected with the processing module and the GOA circuit groups, and the GOA circuit groups are connected with the processing module and the GOA circuit groups, wherein: the level conversion module is used for monitoring a current signal of the GOA circuit, and sending overcurrent protection information to the processing module when the monitored current signal exceeds a preset threshold value; the processing module is used for determining a fault GOA circuit group and a normal GOA circuit group from the plurality of GOA circuit groups according to the overcurrent protection information; and the GOA circuit group is used for acquiring the working level signal from the level conversion module so as to enable at least one normal GOA circuit group to work. Therefore, the scheme prolongs the service life of the display panel by controlling the normal work of part of GOA circuits.
Description
Technical Field
The application relates to the field of GOA circuits, in particular to a GOA circuit with an adjusting function, an adjusting method and a display panel.
Background
The GOA (Gate Driver on Array, line scan integrated on Array substrate) technology utilizes the original process of liquid crystal display panel to make the driving circuit of horizontal scanning line on the substrate around the display area, so that it can replace the external IC to complete the driving of horizontal scanning line. The GOA technology can reduce the binding procedure of an external integrated circuit board, and the display panel is more suitable for manufacturing narrow-frame or frameless display products.
The GOA circuit is a core module in the display panel, and whether it can work normally directly affects the light emitting performance of the display panel. The main function of the GOA circuit is to control the thin film transistors to be turned on row by row when the panel displays. When the GOA circuit is short-circuited, the level converter continuously enters a protection state, so that the display panel cannot normally display, the GOA circuit is integrated on the panel glass through an etching process and is difficult to repair, and once the GOA circuit is short-circuited, the display panel needs to be replaced, so that the service life of the display panel is short.
Disclosure of Invention
The embodiment of the application provides a GOA circuit with an adjusting function, an adjusting method and a display panel, and the service life of the display panel can be prolonged.
The embodiment of the application provides a GOA circuit with regulatory function, including level transition module, processing module and a plurality of GOA circuit group of working under different preset work level signals, the level transition module with processing module and a plurality of GOA circuit group connects, wherein: the level conversion module is used for monitoring a current signal of the GOA circuit, sending overcurrent protection information to the processing module when the current signal is monitored to exceed a preset threshold value, acquiring a waveform adjusting signal from the processing module, and generating a working level signal according to the waveform adjusting signal; the processing module is used for determining a fault GOA circuit group and a normal GOA circuit group from the plurality of GOA circuit groups according to the overcurrent protection information, generating a waveform adjusting signal and sending the waveform adjusting signal to the level conversion module; and the GOA circuit group is used for acquiring the working level signal from the level conversion module so as to enable at least one normal GOA circuit group to work.
In some embodiments, the processing module is further configured to record adjustment information, so as to control the at least one normal GOA circuit group to operate according to the adjustment information when the GOA circuit is started, where the adjustment information includes the waveform adjustment signal.
In some embodiments, there are two of the groups of GOA circuits.
The embodiment of the present application further provides a method for adjusting a GOA circuit having an adjusting function, where the GOA circuit includes a level conversion module, a processing module, and a plurality of GOA circuit groups operating under different preset operating level signals, and the method includes: the level conversion module monitors a current signal of the GOA circuit, and when the current signal is monitored to exceed a preset threshold value, the level conversion module sends overcurrent protection information to the processing module; the processing module determines a fault GOA circuit group and a normal GOA circuit group from the plurality of GOA circuit groups according to the overcurrent protection information, generates a waveform adjusting signal and sends the waveform adjusting signal to the level conversion module; the level conversion module acquires the waveform adjusting signal and generates a working level signal according to the waveform adjusting signal; and the GOA circuit group acquires the working level signal from the level conversion module so as to enable at least one normal GOA circuit group to work.
In some embodiments, the determining, by the processing module, a failed GOA circuit group and a normal GOA circuit group from the plurality of GOA circuit groups according to the over-current protection information includes: the processing module determines the occurrence frequency of overcurrent protection according to overcurrent protection information in a preset time period; when the occurrence frequency of the over-current protection meets a preset condition, determining a target level signal according to an over-current level signal, wherein the over-current level signal is a level signal when the over-current protection occurs in the preset time period; and determining a fault GOA circuit group and a normal GOA circuit group from the plurality of GOA circuit groups according to the target level signal and the preset working level signal.
In some embodiments, the preset condition is that the number of occurrences of over-current protection reaches or exceeds a preset number within the preset time period.
In some embodiments, the determining a target level signal from the over-current level signal comprises: and when the overcurrent level signals are all at the same level, determining the overcurrent level signals as target level signals.
In some embodiments, the determining, according to the target level signal and the preset operating level signal, a faulty GOA circuit group and a normal GOA circuit group from among the plurality of GOA circuit groups includes: and determining a GOA circuit group corresponding to a preset working level signal which is the same as a target level signal as a fault GOA circuit group from the plurality of GOA circuit groups, and determining all GOA circuit groups except the fault GOA circuit group in the plurality of GOA circuit groups as normal GOA circuit groups.
In some embodiments, the method further comprises: and the processing module records adjustment information so as to control the at least one normal GOA circuit group to work according to the adjustment information when the GOA circuit is started, wherein the adjustment information comprises the waveform adjustment signal.
The embodiment of the present application further provides a display panel, including panel main part, level conversion module, processing module and a plurality of different working level signal working's GOA circuit group is predetermine to the work, the level conversion module the processing module and a plurality of GOA circuit group sets up in the panel main part, the level conversion module with the processing module and a plurality of GOA circuit group connects, wherein: the level conversion module is used for monitoring a current signal of the GOA circuit, sending overcurrent protection information to the processing module when the current signal is monitored to exceed a preset threshold value, acquiring a waveform adjusting signal from the processing module, and generating a working level signal according to the waveform adjusting signal; the processing module is used for determining a fault GOA circuit group and a normal GOA circuit group from the plurality of GOA circuit groups according to the overcurrent protection information, generating a waveform adjusting signal and sending the waveform adjusting signal to the level conversion module; and the GOA circuit group is used for acquiring the working level signal from the level conversion module so as to enable at least one normal GOA circuit group to work.
The GOA circuit of adjustment function that this application embodiment provided, including level conversion piece, processing module and a plurality of GOA circuit group of working under different preset work level signals, level conversion module with processing module and a plurality of GOA circuit group connects, wherein: the level conversion module is used for monitoring a current signal of the GOA circuit, sending overcurrent protection information to the processing module when the current signal is monitored to exceed a preset threshold value, acquiring a waveform adjusting signal from the processing module, and generating a working level signal according to the waveform adjusting signal; the processing module is used for determining a fault GOA circuit group and a normal GOA circuit group from the plurality of GOA circuit groups according to the overcurrent protection information, generating a waveform adjusting signal and sending the waveform adjusting signal to the level conversion module; and the GOA circuit group is used for acquiring the working level signal from the level conversion module so as to enable at least one normal GOA circuit group to work. Therefore, the current signal is monitored through the level conversion module, when the level conversion module is in an overcurrent protection state due to short circuit, overcurrent protection information is recorded through the processing module, a fault GOA circuit group is identified according to the overcurrent protection information, and the normal GOA circuit group is controlled to work through adjusting waveforms.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a GOA circuit with an adjustment function according to an embodiment of the present disclosure;
fig. 2 is a schematic flowchart illustrating an adjusting method of a GOA circuit with an adjusting function according to an embodiment of the present disclosure;
fig. 3 is a schematic flowchart of an adjusting method of a GOA circuit with an adjusting function according to another embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a GOA circuit with an adjustment function according to another 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, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the 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.
The embodiment of the application provides a GOA circuit with an adjusting function, an adjusting method and a display panel.
The embodiment of the application provides a GOA circuit with regulatory function, including level conversion module, processing module and a plurality of GOA circuit group of working under different preset work level signals, level conversion module and processing module and a plurality of GOA circuit group link, wherein: the level conversion module is used for monitoring a current signal of the GOA circuit, sending overcurrent protection information to the processing module when the monitored current signal exceeds a preset threshold value, acquiring a waveform adjusting signal from the processing module, and generating a working level signal according to the waveform adjusting signal; the processing module is used for determining a fault GOA circuit group and a normal GOA circuit group from the plurality of GOA circuit groups according to the overcurrent protection information, generating a waveform adjusting signal and sending the waveform adjusting signal to the level conversion module; and the GOA circuit group is used for acquiring the working level signal from the level conversion module so as to enable at least one normal GOA circuit group to work.
Because the existing control panel generally adopts two sets of GOA circuit groups to work in turn (such as comprising a GOA circuit group 1 and a GOA circuit group 2), the switching action is generally triggered by LC waveforms once every 1.67S, and because the level is switched and overturned once every 100 frames (1.67S-60Hz refreshing), the GOA circuit groups can also be switched once, so that the GOA circuit groups on two sides work alternately. Because two sets of GOA circuits in the control panel work alternately without stop, when one GOA circuit group breaks down, the display pictures of the control panel can be displayed alternately by normal pictures and abnormal pictures, so that the control panel cannot be used. Therefore, in the embodiment of the application, the current signal is monitored through the level conversion module, when the level conversion module is in an overcurrent protection state due to short circuit, overcurrent protection information is recorded through the processing module, a fault GOA circuit group is identified according to the overcurrent protection information, and the normal GOA circuit group is controlled to work through adjusting waveforms.
The GOA circuit with the adjusting function provided by the embodiment of the application can be integrated in a display panel. For example, the display panel is a liquid crystal display panel, and the display panel includes a panel main body, a level conversion module and a processing module which are arranged on the panel main body, and a plurality of GOA circuit groups which are realized by GOA counting.
The following are detailed below. The numbers in the following examples are not intended to limit the order of preference of the examples.
In this embodiment, a GOA circuit with an adjustment function is provided, as shown in fig. 1, including a level conversion module 110, a processing module 120, and a plurality of GOA circuit groups 130 operating under different preset operating level signals, where the level conversion module 110 is connected to the processing module 120 and the plurality of GOA circuit groups 130.
The level shift module 110 is configured to monitor a current signal of the GOA circuit, send overcurrent protection information to the processing module when the monitored current signal exceeds a preset threshold, obtain a waveform adjustment signal from the processing module, and generate a working level signal according to the waveform adjustment signal.
The level converting module is a module for converting a level, and may be a level converter. The processing module is a module for processing the acquired information and outputting the waveform adjustment signal, and may be an SoC (system on chip, also called system on chip) or a T-CON IC (logic board). The waveform adjustment signal is a signal for adjusting the LC waveform, and may be an LC waveform signal. The preset threshold value refers to a predetermined maximum current value. The over-current protection information may include, but is not limited to, at least one of an over-current protection time, a number of over-current protections, and a level at the time of the over-current protection, wherein the number of over-current protections may be counted each time the over-current protection is transmitted. Specifically, when the current exceeds a predetermined maximum current value, the level shifter enters a protection state due to overcurrent protection, and sends overcurrent protection information to the SoC.
The SoC or T-CON IC outputs LC waveform, and generates working level signal after level converter conversion and outputs the working level signal to GOA circuit group. The preset working level signal refers to a level determined according to the level of the GOA circuit group during working, each GOA circuit group corresponds to one preset working level signal, the working level signal refers to a level signal enabling at least one GOA circuit group to work, and the working level signal can correspond to one preset working level signal so that the GOA circuit group corresponding to the preset working level signal works. Because a plurality of GOA circuit groups work under different preset working level signals, the working level signals are output at the level converter, and only the GOA circuit group corresponding to the level signals works. Generally, one preset working level signal corresponds to one GOA circuit group, but the corresponding relationship between the preset working level signal and the GOA circuit group may also be adjusted as required, for example, by setting a plurality of GOA circuit groups corresponding to the same preset working level signal, more than one GOA circuit group can work under the preset working level signal.
And the processing module 120 is configured to determine a faulty GOA circuit group and a normal GOA circuit group from the multiple GOA circuit groups according to the overcurrent protection information, and generate a waveform adjustment signal and send the waveform adjustment signal to the level conversion module.
Because a plurality of GOA circuit groups in the GOA circuit work under different preset working level signals, only the GOA circuit group corresponding to the level at the moment works at the same time, and when the level signal is adjusted, the GOA circuit group corresponding to the adjusted level signal can be switched to work. Because the overcurrent protection information can include the level when overcurrent protection to this processing module can confirm the GOA circuit group that this level corresponds according to the level when overcurrent protection, confirm this GOA circuit group and had taken place the trouble with this, for example short circuit burn and lose, fusing scheduling problem, can also confirm for normal GOA circuit group for other GOA circuit groups, wherein normal GOA circuit group is the GOA circuit group that can normally work. Therefore, the processing module can determine the failed GOA circuit group and the normal GOA circuit group according to the acquired over-current protection information.
After the faulty and normal GOA circuit groups are determined, the processing module may determine a waveform adjustment signal according to a preset working level signal corresponding to the normal GOA circuit group, that is, the waveform adjustment signal is a signal for adjusting the GOA circuit level signal to the working level signal corresponding to the normal GOA circuit group. When the number of the preset working level signals corresponding to the normal GOA circuit group is only one, the waveform adjusting signal is used for adjusting the GOA circuit level signals to be the preset working level signals, and when the number of the preset working level signals is multiple, the waveform adjusting signal can be used for adjusting the GOA circuit level signals to be one of the preset working level signals through setting.
In some embodiments, the processing module 120 is further configured to record adjustment information, so as to control at least one normal GOA circuit group to operate according to the adjustment information when the GOA circuit is started, where the adjustment information includes the waveform adjustment signal.
Through recording the adjustment information, the processing module can output the waveform adjustment signal determined in the previous working process when the GOA circuit is started next time, so that the GOA circuit directly enters a normal GOA circuit group working mode when being started, and the phenomenon of short circuit again is avoided.
And the GOA circuit group 130 is configured to obtain a working level signal from the level conversion module, so that at least one normal GOA circuit group works.
Any one of the plurality of GOA circuits can be independently used for controlling the GOA circuit of the panel to work. When normal GOA circuit group has a plurality ofly, can adjust the wave form adjustment signal of output through processing module to through adjustment work level signal, make a plurality of normal GOA circuit group work in turn, also can make work level signal keep at the same level through processing module, make one in a plurality of normal GOA circuit group continuously work, when normal GOA circuit group only has one, can make work level signal keep at the same level through processing module, make this normal GOA circuit group continuously work.
Because the existing control panel generally adopts two sets of GOA circuit groups to work in turn, generally, the switching action is triggered by LC waveforms once every 1.67S, because two sets of GOA circuits in the control panel work alternately without stop, when one GOA circuit group breaks down, the display pictures of the control panel can be displayed alternately by normal and abnormal pictures, and therefore the control panel cannot be used. However, the GOA circuit group of this application embodiment can make the work of the normal GOA circuit group that corresponds with this work level signal after obtaining the work level signal, makes the GOA circuit get into normal GOA circuit group mode of operation, also only lets normal GOA circuit group continuous work, avoids trouble and normal GOA circuit group alternate work, leads to control panel unable use, has prolonged control panel's life.
In order to simplify the circuit arrangement within the display panel, in some embodiments, there are two GOA circuit groups.
In specific implementation, the above modules may be implemented as independent entities, or may be combined arbitrarily and implemented as the same or several entities, and specific implementation of the above modules may refer to subsequent method embodiments, which are not described herein again.
As can be seen from the above, the GOA circuit with adjustment function provided by this embodiment includes a level conversion module, a processing module, and a plurality of GOA circuit groups working under different preset working level signals, where the level conversion module is connected to the processing module and the plurality of GOA circuit groups, where: the level conversion module is used for monitoring a current signal of the GOA circuit, sending overcurrent protection information to the processing module when the monitored current signal exceeds a preset threshold value, acquiring a waveform adjusting signal from the processing module, and generating a working level signal according to the waveform adjusting signal; the processing module is used for determining a fault GOA circuit group and a normal GOA circuit group from the plurality of GOA circuit groups according to the overcurrent protection information, generating a waveform adjusting signal and sending the waveform adjusting signal to the level conversion module; and the GOA circuit group is used for acquiring the working level signal from the level conversion module so as to enable at least one normal GOA circuit group to work. Therefore, according to the embodiment of the application, the current signal is monitored through the level conversion module, when the level conversion module is in an overcurrent protection state due to short circuit, overcurrent protection information is recorded through the processing module, a fault GOA circuit group is identified according to the overcurrent protection information, and the normal GOA circuit group is controlled to work through adjusting waveforms.
The embodiment of the present application further provides a method for adjusting a GOA circuit having an adjusting function, where the GOA circuit includes a level conversion module, a processing module, and a plurality of GOA circuit groups operating under different preset operating level signals, and as shown in fig. 2, the method includes:
210. the level conversion module monitors a current signal of the GOA circuit, and when the monitored current signal exceeds a preset threshold value, the level conversion module sends over-current protection information to the processing module.
The terms of the level conversion module, the preset threshold, the over-current protection information, the processing module, the preset working level signal, the waveform adjustment signal, and the like, and some embodiments in this embodiment have been described in the foregoing embodiments, and are not described in detail in this embodiment.
220. And the processing module determines a fault GOA circuit group and a normal GOA circuit group from the plurality of GOA circuit groups according to the overcurrent protection information, generates a waveform adjusting signal and sends the waveform adjusting signal to the level conversion module.
In some embodiments, step 220 may further include steps 1.1-1.3, as follows:
1.1, the processing module determines the occurrence frequency of overcurrent protection according to the overcurrent protection information in the preset time period.
And 1.2, when the occurrence frequency of the overcurrent protection meets a preset condition, determining a target level signal according to the overcurrent level signal, wherein the overcurrent level signal is a level signal when the overcurrent protection occurs in a preset time period.
And 1.3, determining a fault GOA circuit group and a normal GOA circuit group from the plurality of GOA circuit groups according to the target level signal and the preset working level signal.
The preset time period is a preset time period, and the occurrence frequency of the overcurrent protection refers to the occurrence frequency of the overcurrent protection within the preset time period. By determining the occurrence frequency of the overcurrent protection in the preset time period, accidental overcurrent protection caused by non-circuit faults can be eliminated, so that the faulted circuit group can be accurately positioned.
In some embodiments, the preset condition may be that the number of occurrences of the over-current protection reaches or exceeds a preset number within a preset time period, where the preset time period and the preset number may be set or adjusted according to actual needs. For example, the preset number of times of occurrence of overcurrent protection in a preset time period is n, after m times of overcurrent protection, whether m is greater than n is judged, and when m is greater than n, a target level signal is further determined according to an overcurrent level signal obtained by m times of overcurrent protection.
When a GOA circuit fails, usually a group of GOA circuits fails, in order to quickly locate the failed group of GOA circuits, in some embodiments, determining a target level signal according to an over-current level signal may include: and when the overcurrent level signals are all at the same level, determining the overcurrent level signals as target level signals.
When the GOA circuit fails, if there is a plurality of GOA circuit group failures, in order to quickly locate the failed GOA circuit group, in some embodiments, determining the target level signal according to the over-current level signal may include: when the overcurrent level signals are all at different levels, the overcurrent level signal with the highest frequency is determined as the target level signal. Alternatively, in some embodiments, determining the target level signal from the over-current level signal may include: when the overcurrent level signals are all different levels, determining the occurrence frequency of each overcurrent level signal in a preset time period, and determining the overcurrent level signals with the occurrence frequency reaching or exceeding the preset frequency as target level signals.
In order to determine a failed GOA circuit group and a normal GOA circuit group from a plurality of GOA circuit groups, in some embodiments, step 1.3 may further include the steps of: and determining the GOA circuit group corresponding to the preset working level signal which is the same as the target level signal as a fault GOA circuit group from the plurality of GOA circuit groups, and determining all the GOA circuit groups except the fault GOA circuit group in the plurality of GOA circuit groups as normal GOA circuit groups.
230. The level conversion module acquires the waveform adjustment signal and generates a working level signal according to the waveform adjustment signal.
240. And the GOA circuit group acquires the working level signal from the level conversion module so as to enable at least one normal GOA circuit group to work.
In order to directly use the normal GOA circuit group to work when the GOA circuit is started next time, the display panel can normally display, in some embodiments, the method further comprises the following steps: the processing module records the adjustment information so as to control at least one normal GOA circuit group to work according to the adjustment information when the GOA circuit is started, and the adjustment information comprises a waveform adjustment signal.
According to the adjusting method of the GOA circuit with the adjusting function, the current signal of the GOA circuit is monitored through the level conversion module, and when the monitored current signal exceeds the preset threshold value, the level conversion module sends overcurrent protection information to the processing module; the processing module determines a fault GOA circuit group and a normal GOA circuit group from the plurality of GOA circuit groups according to the overcurrent protection information, generates a waveform adjusting signal and sends the waveform adjusting signal to the level conversion module; the level conversion module acquires the waveform adjustment signal and generates a working level signal according to the waveform adjustment signal; and the GOA circuit group acquires the working level signal from the level conversion module so as to enable at least one normal GOA circuit group to work. Therefore, according to the embodiment of the application, the current signal is monitored through the level conversion module, when the level conversion module is in an overcurrent protection state due to short circuit, overcurrent protection information is recorded through the processing module, a fault GOA circuit group is identified according to the overcurrent protection information, and the normal GOA circuit group is controlled to work through adjusting waveforms.
The method described in the above embodiments is further described in detail below.
In this embodiment, a method of the embodiment of the present application will be described in detail by taking a GOA circuit having two GOA circuit groups as an example.
As shown in fig. 3, a specific flow of an adjusting method for a GOA circuit with an adjusting function is as follows:
310. after the display panel is turned on, a Levelshift IC (PMIC, level shifter) performs OCP (over current protection) monitoring on the CK signal.
In a normal state, two GOA circuit groups in the GOA circuits work alternately along with level switching and inversion, and the Levelshift IC can perform OCP monitoring but not limited to the OCP status bit data change in its register.
320. And when the Levelshift IC monitors the OCP, transmitting the OCP information to the SoC terminal.
The information transmission may be, but not limited to, through transmission protocols such as I2C and SPI, or IO status bit detection. And when the Levelshift IC monitors the OCP, the Levelshift IC enters a protection state due to the OCP of the CK.
330. The SoC records OCP information, which includes the time and frequency of the level shift IC OCP and the LC level state when the OCP occurs.
340. Whether a problem occurs in a single-side GOA circuit group is judged through the OCP expression of a Levelshift IC, wherein the judgment method can be that n OCPs are detected within a fixed time and the n OCPs are all generated in the same level bit time of the LC.
In some embodiments, the SoC starts to time and count the OCP after receiving the OCP information for the first time to determine the occurrence frequency of the over-current protection. By timing and counting the OCP, the number of times of overcurrent protection after a preset time period from the first timing can be obtained and used as the frequency of overcurrent protection, and the specific frequency of overcurrent protection can be represented by the number of times of overcurrent protection in the preset time period.
In some embodiments, as shown in fig. 4, the GOA circuit includes a GOA circuit group 1 and a GOA circuit group 2, and the Levelshift IC is connected to the SoC, the GOA circuit group 1, and the GOA circuit group 2, where the LC includes mirror-symmetric LCs 1 and 2, and when the LC1 is high and the LC2 is low, the GOA circuit group 1 starts operating, and the GOA circuit group 2 stops operating, and when the LC1 is low and the LC2 is high, the GOA circuit group 2 starts operating, and the GOA circuit group 1 stops operating. When n times of OCP protection in X period of time is detected to be performed when LC1 is at low level and LC2 is at high level, it can be determined that working GOA circuit group 2 is abnormal when LC1 is at low level, and it can be determined that GOA circuit group 2 is a fault circuit group.
If the determination result is that no GOA circuit group has a fault, step 310 is continuously executed. The single-sided GOA circuit group refers to one of the two GOA circuit groups.
350. If the single-side GOA circuit fails, the SoC and the T-CON IC control the LC waveform to enable the normal circuit group to work on one side. The LC waveform is output by the SoC or the T-CON IC, and is output to the surface after level conversion by the level shift IC, so that the circuit is in the same level.
When the GOA circuit group 2 is a fault circuit group, the SoC control LC1 is always in a high level state, so that the GOA circuit group 1 works normally.
360. And the SoC records LC waveform control information so as to directly enter a single-side working mode of the GOA circuit after the display panel is started next time.
As can be seen from the above, in the adjustment method for the GOA circuit with the adjustment function provided in the embodiment of the present application, the state of the GOA circuit on the display panel is detected through the OCP function of the Levelshift IC, when it is recognized that the unilateral GOA circuit has the problems of short circuit, burning, fusing, etc., and cannot continue to work, the Levelshift IC feeds back a signal to the SoC end, the SoC end recognizes that side of the GOA circuit has the problems through the LC waveform, and then controls one side of the intact half of the GOA circuit to work by replacing the LC waveform, so as to prolong the service life of the panel.
The embodiment of the present application further provides a display panel, including panel main body, level shift module 110, processing module 120 and a plurality of GOA circuit groups 130 working under different preset working level signals, level shift module 110, processing module 120 and a plurality of GOA circuit groups 130 are disposed on the panel main body, the level shift module is connected with the processing module and the plurality of GOA circuit groups, wherein:
the level shift module 110 is configured to monitor a current signal of the GOA circuit, send overcurrent protection information to the processing module when the monitored current signal exceeds a preset threshold, obtain a waveform adjustment signal from the processing module, and generate a working level signal according to the waveform adjustment signal.
And the processing module 120 is configured to determine a faulty GOA circuit group and a normal GOA circuit group from the multiple GOA circuit groups according to the overcurrent protection information, and generate a waveform adjustment signal and send the waveform adjustment signal to the level conversion module.
In some embodiments, the processing module is further configured to record adjustment information, so as to control at least one normal GOA circuit group to operate according to the adjustment information when the GOA circuit is started, where the adjustment information includes the waveform adjustment signal.
And the plurality of GOA circuit groups 130 are configured to obtain an operating level signal from the level conversion module, so that at least one normal GOA circuit group operates.
In some embodiments, there are two GOA circuit groups.
In a specific implementation, the above modules may be implemented as independent entities, or may be combined arbitrarily to be implemented as the same or several entities, and the specific implementation of the above modules may refer to the foregoing embodiments, which are not described herein again.
The display panel that this application embodiment provided passes through level conversion module monitoring current signal, when leading to level conversion module overcurrent protection state because of the short circuit, through processing module record overcurrent protection information, and discern trouble GOA circuit group according to overcurrent protection information, with through the work of the normal GOA circuit group of adjustment waveform control, even consequently, the GOA circuit has taken place the short circuit, still can control normal partial GOA circuit work, make control panel can normally show, in order to prolong control panel's life.
The foregoing detailed description is directed to a GOA circuit with an adjustment function, an adjustment method, and a display panel, which are provided in the embodiments of the present application, and specific examples are applied herein to illustrate the principles and implementations of the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. The utility model provides a GOA circuit with regulatory function, its characterized in that includes level transition module, processing module and a plurality of GOA circuit group that work under different preset work level signals, level transition module with processing module and a plurality of GOA circuit group link, wherein:
the level conversion module is used for monitoring a current signal of the GOA circuit, sending overcurrent protection information to the processing module when the current signal is monitored to exceed a preset threshold value, acquiring a waveform adjusting signal from the processing module, and generating a working level signal according to the waveform adjusting signal;
the processing module is used for determining a fault GOA circuit group and a normal GOA circuit group from the plurality of GOA circuit groups according to the overcurrent protection information, generating a waveform adjusting signal and sending the waveform adjusting signal to the level conversion module;
and the GOA circuit group is used for acquiring the working level signal from the level conversion module so as to enable at least one normal GOA circuit group to work.
2. The GOA circuit with scaling capability of claim 1, wherein the processing module is further configured to record scaling information, including the waveform scaling signal, for controlling the at least one normal GOA circuit group to operate according to the scaling information when the GOA circuit is enabled.
3. The GOA circuit with scaling capability of claim 1, wherein there are two GOA circuit groups.
4. A method for adjusting a GOA circuit with an adjusting function, wherein the GOA circuit comprises a level conversion module, a processing module and a plurality of GOA circuit groups which work under different preset working level signals, the method comprising:
the level conversion module monitors a current signal of the GOA circuit, and when the current signal is monitored to exceed a preset threshold value, the level conversion module sends overcurrent protection information to the processing module;
the processing module determines a fault GOA circuit group and a normal GOA circuit group from the plurality of GOA circuit groups according to the overcurrent protection information, generates a waveform adjusting signal and sends the waveform adjusting signal to the level conversion module;
the level conversion module acquires the waveform adjusting signal and generates a working level signal according to the waveform adjusting signal;
and the GOA circuit group acquires the working level signal from the level conversion module so as to enable at least one normal GOA circuit group to work.
5. The method for adjusting a GOA circuit with an adjusting function according to claim 4, wherein said processing module determines a failed GOA circuit group and a normal GOA circuit group from a plurality of said GOA circuit groups according to said over-current protection information, comprising:
the processing module determines the occurrence frequency of overcurrent protection according to overcurrent protection information in a preset time period;
when the occurrence frequency of the over-current protection meets a preset condition, determining a target level signal according to an over-current level signal, wherein the over-current level signal is a level signal when the over-current protection occurs in the preset time period;
and determining a fault GOA circuit group and a normal GOA circuit group from the plurality of GOA circuit groups according to the target level signal and the preset working level signal.
6. The method according to claim 5, wherein the predetermined condition is that the occurrence number of over-current protection reaches or exceeds a predetermined number within the predetermined time period.
7. The method for adjusting a GOA circuit with an adjusting function according to claim 5, wherein said determining a target level signal based on an over-current level signal comprises:
and when the overcurrent level signals are all at the same level, determining the overcurrent level signals as target level signals.
8. The method for adjusting a GOA circuit having an adjusting function according to claim 5, wherein said determining a faulty GOA circuit group and a normal GOA circuit group from a plurality of GOA circuit groups according to the target level signal and the preset operation level signal comprises:
and determining a GOA circuit group corresponding to a preset working level signal which is the same as a target level signal as a fault GOA circuit group from the plurality of GOA circuit groups, and determining all GOA circuit groups except the fault GOA circuit group in the plurality of GOA circuit groups as normal GOA circuit groups.
9. The method for adjusting a GOA circuit with an adjusting function according to claim 4, further comprising:
and the processing module records adjustment information so as to control the at least one normal GOA circuit group to work according to the adjustment information when the GOA circuit is started, wherein the adjustment information comprises the waveform adjustment signal.
10. The utility model provides a display panel, its characterized in that, includes panel main part, level transition module, processing module and a plurality of GOA circuit group that work under different preset work level signals, level transition module, processing module and a plurality of GOA circuit group sets up on the panel main part, level transition module with processing module and a plurality of GOA circuit group connects, wherein:
the level conversion module is used for monitoring a current signal of the GOA circuit, sending overcurrent protection information to the processing module when the current signal is monitored to exceed a preset threshold value, acquiring a waveform adjusting signal from the processing module, and generating a working level signal according to the waveform adjusting signal;
the processing module is used for determining a fault GOA circuit group and a normal GOA circuit group from the plurality of GOA circuit groups according to the overcurrent protection information, generating a waveform adjusting signal and sending the waveform adjusting signal to the level conversion module;
and the GOA circuit group is used for acquiring the working level signal from the level conversion module so as to enable at least one normal GOA circuit group to work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111536912.7A CN114241968A (en) | 2021-12-15 | 2021-12-15 | GOA circuit with adjusting function, adjusting method and display panel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111536912.7A CN114241968A (en) | 2021-12-15 | 2021-12-15 | GOA circuit with adjusting function, adjusting method and display panel |
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| CN114241968A true CN114241968A (en) | 2022-03-25 |
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| CN202111536912.7A Pending CN114241968A (en) | 2021-12-15 | 2021-12-15 | GOA circuit with adjusting function, adjusting method and display panel |
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