CN118173062A - Driving control method, driving control circuit and display device - Google Patents

Abstract

The invention relates to the technical field of display and discloses a driving control method, a driving control circuit and a display device, wherein the driving control method is applied to a time sequence controller TCON IC, continuous driving time length of a GOA unit is determined through a count value of a timing module, if the continuous driving time length reaches any one target regulating time length in a preset regulating time length set, a target regulating signal corresponding to the target regulating time length is sent to a PMIC so that the PMIC generates a grid line regulating voltage corresponding to the target regulating time length, each regulating time length in the regulating time length set is determined based on a critical driving voltage curve of a driving transistor included in the GOA unit, the grid line regulating voltage is determined according to the critical driving voltage corresponding to the critical driving voltage curve and a preset safety floating value, and the scheme for changing the grid line regulating voltage along with characteristic drift of the driving transistor ensures display effect of a display panel and prolongs service life of a product.

Description

Driving control method, driving control circuit and display device

Technical Field

The disclosure relates to the technical field of display, and provides a drive control method, a drive control circuit and a display device.

Background

With the popularization of the application market of the liquid crystal display panel, the outdoor advertising board, the indication board, the indoor monitoring and education machines and other products are widely used. The products often employ a highlighting backlight during use and are often operated continuously, for example, 7 x 24 hours.

Under the above-mentioned usage scenario, the characteristics of the driving transistors in the Array substrate row driving (GOA) unit continuously drift in the same direction. When the characteristics of the driving transistor drift to a certain degree, the constant grid line regulation voltage (VGH/VGL) cannot ensure the normal operation of the GOA unit, so that the condition that multiple rows of grid lines are simultaneously opened can occur, the pixel unit is charged in a wrong way, the picture display is abnormal, and the service life of the display panel is seriously influenced.

Disclosure of Invention

The embodiment of the disclosure provides a driving control method, a driving control circuit and a display device, which are used for ensuring the display effect of a display panel and prolonging the service life of a product by changing the voltage regulated and controlled by a grid line.

The specific technical scheme provided by the disclosure is as follows:

In a first aspect, an embodiment of the present disclosure provides a driving control method applied to a timing controller TCON IC, where a Flash and a power management unit PMIC are both coupled to the TCON IC, the PMIC is coupled to a timing conversion unit LEVEL SHIFT, and LEVEL SHIFT is coupled to a GOA unit, the method includes:

Determining continuous driving time length of the GOA unit through a counting value of the timing module, wherein the timing starting point of the counting value is the moment when the GOA unit provides driving voltage for the grid line for the first time;

If the continuous driving time length reaches any one target regulation time length in a preset regulation time length set, a target regulation signal corresponding to the target regulation time length is sent to the PMIC, so that the PMIC generates a grid line regulation voltage corresponding to the target regulation signal, wherein each regulation time length in the regulation time length set is determined based on a critical driving voltage curve of a driving transistor included in the GOA unit, and the grid line regulation voltage is determined according to the critical driving voltage corresponding to the critical driving voltage curve and a preset safe floating value.

Optionally, determining the continuous driving duration of the GOA unit by the count value of the timing module includes:

When the GOA unit is monitored to provide driving voltage for the grid line for the first time, starting a timing module to count, and obtaining a plurality of count values;

And determining the continuous driving time length of the GOA unit according to each counting value and the preset unit counting time length, wherein the unit counting time length is used for representing the time length corresponding to the single counting of the timing module.

Optionally, when it is detected that the GOA unit first provides the driving voltage to the gate line, starting the timing module to start counting, and obtaining a plurality of count values, the method further includes:

sending the plurality of count values to Flash so that the Flash stores the plurality of count values respectively;

If the GOA unit is powered off and restarted, the largest counting value is read from a plurality of counting values stored in Flash, and the largest counting value is used as a timing starting point.

Optionally, the method further comprises:

If the GOA unit is powered off and restarted, reading the stored current count value from the register, and acquiring the grid line regulation voltage from the PMIC;

Determining a counting range value according to the grid line regulation voltage and a unit counting time length, wherein the counting range value represents a plurality of counting values between a counting range minimum value and a counting range maximum value, the counting range minimum value is determined according to a first regulation time length corresponding to the grid line regulation voltage, the counting range maximum value is determined according to a second regulation time length, and the second regulation time length is the next regulation time length of the first regulation time length;

and if the current count value exceeds the count value represented by the count range value, taking the minimum value of the count range as a timing starting point.

Alternatively, the threshold drive voltage curve is determined by:

The driving voltage extreme value required by the GOA unit to normally drive at each moment is obtained in advance, wherein the driving voltage extreme value comprises the minimum value of the first driving voltage and the maximum value of the second driving voltage;

If the extremum change value of any two continuous driving voltage extremums exceeds a preset change threshold, respectively determining two regulation and control duration based on a timing starting point and the moment corresponding to the any two continuous driving voltage extremums, and determining a regulation and control duration set according to each regulation and control duration;

Determining a plurality of grid line regulation voltages according to each driving voltage extreme value and a preset safe floating value;

And determining a critical driving voltage curve according to the regulation voltage and the regulation duration set of each grid line.

Optionally, if the driving voltage extremum is the minimum value of the first driving voltage, determining a plurality of gate line regulation voltages according to each driving voltage extremum and a preset safe floating value includes:

And adding a preset safe floating value to each driving voltage extreme value to obtain a plurality of grid line regulating voltages.

Optionally, if the driving voltage extremum is the maximum value of the second driving voltage, determining a plurality of gate line regulation voltages according to each driving voltage extremum and a preset safe floating value, including:

subtracting a preset safe floating value from each driving voltage extreme value to obtain a plurality of grid line regulating voltages.

Optionally, if the continuous driving time length reaches any one target regulation time length in the preset regulation time length set, sending a target regulation signal corresponding to the target regulation time length to the PMIC, so that the PMIC generates a gate line regulation voltage corresponding to the target regulation signal, including:

Comparing the continuous driving time length with each control time length in a preset control time length set, and determining the control time length which is equal to the continuous driving time length as a target control time length;

And sending a target regulation signal to the PMIC at a moment corresponding to the target regulation duration, so that the PMIC searches for a regulation voltage corresponding to the target regulation signal in a regulation voltage set, and determines the searched regulation voltage as a grid line regulation voltage.

In a second aspect, embodiments of the present disclosure further provide a driving control circuit including: flash, power management unit PMIC, timing conversion unit LEVEL SHIFT, GOA unit, and timing controller TCON IC applying the driving control method as any one of the above;

Both Flash and power management unit PMIC are coupled to TCON IC, PMIC is coupled to timing conversion unit LEVEL SHIFT, LEVEL SHIFT is coupled to GOA unit.

In a third aspect, an embodiment of the present disclosure further provides a display apparatus, including: a display panel and the drive control circuit described above;

the display panel is driven by the drive control circuit to display.

The beneficial effects of the present disclosure are as follows:

In summary, the embodiments of the present disclosure provide a driving control method, a driving control circuit and a display device, where the driving control method is applied to a timing controller TCON IC, a Flash and a power management unit PMIC are both coupled to the TCON IC, the PMIC is coupled to a timing conversion unit LEVEL SHIFT, and LEVEL SHIFT is coupled to a GOA unit, and the method includes: determining continuous driving time length of the GOA unit through a counting value of a timing module, wherein a timing starting point of the counting value is time when the GOA unit provides driving voltage for the grid line for the first time, if the continuous driving time length reaches any one target regulation time length in a preset regulation time length set, a target regulation signal corresponding to the target regulation time length is sent to the PMIC, so that the PMIC generates grid line regulation voltage corresponding to the target regulation signal, each regulation time length in the regulation time length set is determined based on a critical driving voltage curve of a driving transistor included in the GOA unit, the grid line regulation voltage is determined according to the critical driving voltage corresponding to the critical driving voltage curve and a preset safe floating value, and when the TCON IC timing reaches different using time lengths, different control signals are sent to the PMIC, so that the grid line regulation voltage changes along with characteristic drift of the driving transistor, display effect of a display panel is ensured, and service life of a product is prolonged.

Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the disclosure. The objectives and other advantages of the disclosure will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate and explain the present disclosure, and together with the description serve to explain the present disclosure. In the drawings:

fig. 1 is a schematic diagram of hardware connection corresponding to a driving control method in an embodiment of the disclosure;

FIG. 2 is a flow chart of a driving control method according to an embodiment of the disclosure;

FIG. 3 is a schematic flow chart of determining a continuous driving duration of a GOA unit by a timing module in an embodiment of the disclosure;

FIG. 4 is a schematic diagram of generating a gate line regulation voltage according to a threshold driving voltage curve and a safe floating value in an embodiment of the disclosure;

FIG. 5 is a schematic flow chart of generating a gate line regulation voltage by a PMIC according to a target regulation signal corresponding to a target regulation duration in an embodiment of the present disclosure;

FIG. 6 is a connection diagram of a drive control circuit according to an embodiment of the present disclosure;

Fig. 7 is a schematic connection diagram of a display device according to an embodiment of the disclosure.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are some embodiments of the technical solutions of the present disclosure, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments described in the present disclosure are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be capable of being practiced otherwise than as specifically illustrated and described.

In the related art, products such as outdoor billboards, signs, indoor monitoring and education machines are increasingly used. The products often employ a highlighting backlight during use and are often operated continuously, for example, 7 x 24 hours.

Under the above-mentioned usage scenario, the characteristics of the driving transistors in the Array substrate row driving (GOA) unit continuously drift in the same direction. When the characteristics of the driving transistor drift to a certain extent, the constant grid line regulation voltage (VGH/VGL) cannot ensure the normal operation of the GOA unit, so that the condition that multiple rows of grid lines are simultaneously opened can occur, the pixel unit is charged in a wrong way, the picture is displayed abnormally, the characteristics of the driving transistor drift is irreversible, and the service life of the display panel can be directly influenced by serious characteristics drift.

Preferred embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, a driving control method according to an embodiment of the present application is applied to a timing controller TCON IC, a Flash and a Power management unit (Power MANAGEMENT IC, PMIC) are both coupled to the (Timing Controller, TCON) IC, the PMIC is coupled to a timing conversion unit LEVEL SHIFT, and the LEVEL SHIFT is coupled to the GOA unit.

In the embodiment of the application, an execution main body of the driving control method is a TCON IC, and in the execution process of the driving control method, the TCON IC is respectively communicated with Flash and a PMIC to generate grid line regulation voltages with different values at different moments corresponding to different use time periods of the display panel so as to ensure the driving capability of the GOA unit, thereby improving the display effect and the service life of the display panel.

Referring to fig. 2, the steps of a driving control method according to an embodiment of the present application specifically include:

step 201: and determining the continuous driving time length of the GOA unit through the counting value of the timing module, wherein the timing starting point of the counting value is the moment when the GOA unit provides driving voltage for the grid line for the first time.

In the embodiment of the application, the timing module of the TCON IC is started, and the continuous driving duration of the GOA unit is counted through the counting function of the timing module. It should be noted that, the continuous driving time period is a period of time from a time when the display panel is first displayed under the driving of the GOA unit to a current use time, where the period of time does not include a time period when the display panel is in a shutdown state, but the period of time includes a continuous time period when the display panel is in a use state or a total time period of a plurality of discontinuous time periods.

The determining the continuous driving duration of the GOA unit by the count value of the timing module, as shown in fig. 3, specifically includes:

step 2011: when the GOA unit is monitored to provide driving voltage for the grid line for the first time, the timing module is started to count, and a plurality of count values are obtained.

In the implementation process, when the GOA unit is monitored to provide the driving voltage for the grid line for the first time, namely, the display panel starts to be put into use, the timing module is started to start timing from zero, namely, the moment when the display panel starts to display is taken as the first numerical value of the counting numerical value. With the use of the display panel, the count value of the timing module gradually becomes larger, and a plurality of count values are obtained in the counting process. It should be noted that, how much the count value of the timing module is related to the usage duration of the display panel and the unit count duration.

In addition, when the GOA unit is monitored to provide the driving voltage to the gate line for the first time, the starting timing module starts to count, and after obtaining a plurality of count values, the method further includes:

step 1: and sending the plurality of count values to the Flash so that the Flash stores the plurality of count values respectively.

In order to ensure the accuracy of the count value of the timing module, in the implementation process, the TCON IC also sends each count value recorded by the timing module to the Flash for storage, that is, the register in the Flash is used for storing each count value respectively, so that the backup of each count value recorded by the TCON IC is realized. It should be noted that, in order to save the storage space of Flash, when the next unit counting time is reached, the counting value stored in Flash is erased, and the counting value corresponding to the next unit counting time is written in, so as to update the counting value in Flash.

Step 2: if the GOA unit is powered off and restarted, the largest counting value is read from a plurality of counting values stored in Flash, and the largest counting value is used as a timing starting point.

When the display panel is turned off and turned on again, that is, the GOA unit is turned off and turned on again, the real-time count value recorded in the TCON IC is lost, so as to effectively record the continuous driving duration.

Therefore, the maximum count value is used as a new timing starting point of the timing module of the TCON IC, that is, when the GOA unit is powered off and restarted, the continuous driving duration of the GOA unit is continuously recorded on the basis of the maximum count value.

In addition, in order to prevent the count value of the timing module from being wrong, the method further comprises the following steps:

(1) If the GOA unit is powered off and restarted, the stored current count value is read from the register, and the grid line regulation voltage is obtained from the PMIC.

In the embodiment of the application, when the display panel is turned off and turned on again, namely the GOA unit is turned off and turned on again, the current count value and the grid line regulation voltage stored in the register can be read to verify the count value.

Because the count value of the timing module is a plurality of continuous count values continuously driven by the GOA unit, when the GOA unit is powered off and restarted, the stored current count value is firstly read from the register, and the current count value represents the corresponding real-time count value after the GOA unit is powered off and restarted.

Meanwhile, the TCON IC acquires the grid line regulation voltage from the PMIC, wherein the grid line regulation voltage is the actual value of the corresponding grid line regulation voltage after the GOA unit is powered off and restarted.

(2) Determining a counting range value according to the grid line regulation voltage and the unit counting time length, wherein the counting range value represents a plurality of counting values between a counting range minimum value and a counting range maximum value, the counting range minimum value is determined according to a first regulation time length corresponding to the grid line regulation voltage, the counting range maximum value is determined according to a second regulation time length, and the second regulation time length is the next regulation time length of the first regulation time length.

Considering that the time length of the grid line regulation voltage applied to the GOA unit is a regulation time length, in the implementation process, a counting range value can be obtained by dividing the regulation time length corresponding to the grid line regulation voltage by the unit counting time length. It should be noted that, the starting point of the above-mentioned counting range value, i.e. the minimum value of the counting range, is determined by the first regulation duration when the gate line regulation voltage starts to act on the GOA unit, and the ending point of the above-mentioned counting range value, i.e. the maximum value of the counting range, is determined according to the second regulation duration when the gate line regulation voltage immediately ends to act on the GOA unit, i.e. the second regulation duration is the next regulation duration of the first regulation duration, i.e. the second regulation duration is the duration when the next gate line regulation voltage starts to act on the GOA unit.

(3) And if the current count value exceeds the count value represented by the count range value, taking the minimum value of the count range as a timing starting point.

In the implementation process, comparing whether the current count value exceeds the count value represented by the count range value, and if the current count value exceeds the count range value, taking the minimum value of the count range as a new timing starting point to continue the counting process; if the current count value does not exceed the count value represented by the count range value, the counting is continued on the basis of the current count value, so that the accuracy of the count value is effectively ensured.

Step 2012: and determining the continuous driving time length of the GOA unit according to each counting value and the preset unit counting time length, wherein the unit counting time length is used for representing the time length corresponding to the single counting of the timing module.

In the implementation process, after the timing module obtains a plurality of count values, the count values need to be converted into continuous driving time lengths of the GOA units, namely, the count values are multiplied by preset unit count time lengths, wherein the unit count time lengths are used for representing the time length corresponding to the single count of the timing module, namely, how long one recorded count value represents, and the obtained product is determined to be the continuous driving time length of the GOA units.

It should be noted that, the above-mentioned numerical value of unit count duration needs to be set in combination with the switching frequency and the storage space size of the register under the use scene of the display panel, and in principle, the basis is that the count numerical value is effective and the storage space of the register is saved.

Step 202: if the continuous driving time length reaches any one target regulation time length in a preset regulation time length set, a target regulation signal corresponding to the target regulation time length is sent to the PMIC, so that the PMIC generates a grid line regulation voltage corresponding to the target regulation signal, wherein each regulation time length in the regulation time length set is determined based on a critical driving voltage curve of a driving transistor included in the GOA unit, and the grid line regulation voltage is determined according to the critical driving voltage corresponding to the critical driving voltage curve and a preset safe floating value.

It should be noted that, referring to fig. 4, the threshold driving voltage curve is determined by:

1) And acquiring a driving voltage extreme value required by normal driving of the GOA unit at each moment in advance, wherein the driving voltage extreme value comprises a minimum value of the first driving voltage and a maximum value of the second driving voltage.

In the embodiment of the application, each regulation duration in the regulation duration set is determined based on a critical driving voltage curve of a driving transistor included in the GOA unit, and in general, the critical driving voltage curve is obtained in advance by using some products of the same type before the timing module starts counting. In the specific implementation process, starting from a timing starting point of providing driving voltage for the gate line for the first time by the GOA unit, driving voltage extreme values required by normal driving of the GOA unit at all moments are respectively obtained, and the driving voltage extreme values are critical voltage values required by normal driving of the GOA unit.

The driving voltage extremum includes the minimum value of the first driving voltage, that is, the driving voltage extremum is the minimum value of the first driving voltage VGH, and when the driving voltage extremum is smaller than the minimum value of the first driving voltage VGH, the driving voltage provided by the GOA unit to the gate line cannot make the display panel work normally; the driving voltage extremum further includes a maximum value of the second driving voltage, that is, the driving voltage extremum is the maximum value of the second driving voltage VGL, and when the driving voltage extremum is greater than the maximum value of the second driving voltage VGL, the driving voltage provided by the GOA unit to the gate line cannot make the display panel work normally.

2) If the extreme value change value of any two continuous driving voltage extreme values exceeds the preset change threshold value, respectively determining two regulation and control duration based on the timing starting point and the moment corresponding to any two continuous driving voltage extreme values, and determining a regulation and control duration set according to each regulation and control duration.

In the implementation process, in the process that the GOA unit provides continuous driving voltages for the gate line, after each driving voltage extremum is obtained, the obtained driving voltage extremum is compared with the previous driving voltage extremum, for example, difference is made or a quotient is made, when the extremum change value of any two continuous driving voltage extremums exceeds a preset change threshold (for example, 1V or 0.5V), a timing starting point is used as a timing reference, the time corresponding to the two continuous driving voltage extremums is respectively recorded, and compared with the timing starting point, the two time periods are obtained, namely, two regulation time periods are determined.

In this way, in the whole process that the GOA unit provides continuous driving voltage for the grid line, a plurality of regulation and control duration are determined, and the regulation and control duration respectively form a regulation and control duration set.

3) And determining a plurality of grid line regulation voltages according to each driving voltage extreme value and a preset safe floating value.

Because the driving voltage extreme value is a critical voltage value required by normal driving of the GOA unit, in order to ensure continuous and stable operation of the GOA unit under the influence of various environmental factors, in the implementation process, a preset safe floating value is superimposed on the basis of each driving voltage extreme value, so that a plurality of grid line regulation voltages can be determined.

In a first case, if the driving voltage extremum is the minimum value of the first driving voltage, determining a plurality of gate line regulation voltages according to each driving voltage extremum and a preset safe floating value, including:

And adding a preset safe floating value to each driving voltage extreme value to obtain a plurality of grid line regulating voltages.

In the implementation process, a preset safe floating value (for example, 10V) is added to the minimum value of each first driving voltage corresponding to different modulating duration to obtain a plurality of grid line modulating voltages. When the extreme value of the driving voltage is the minimum value of the first driving voltage, the value of the first driving voltage is larger through the setting of the safe floating value, and the higher grid line regulation voltage is obtained, so that the GOA unit is ensured to have enough driving capability.

In a second case, if the driving voltage extremum is the maximum value of the second driving voltage, determining a plurality of gate line regulation voltages according to each driving voltage extremum and a preset safe floating value, including:

subtracting a preset safe floating value from each driving voltage extreme value to obtain a plurality of grid line regulating voltages.

In the implementation process, the preset safe floating value (for example, 3V) is subtracted from the maximum value of each second driving voltage corresponding to different modulating duration to obtain a plurality of grid line modulating voltages. When the extreme value of the driving voltage is the maximum value of the second driving voltage, the second driving voltage is smaller in value through the setting of the safe floating value, and the lower grid line regulation voltage is obtained, so that the GOA unit is ensured to have enough driving capability.

It should be noted that the above-mentioned safe floating value may be a constant value or a floating value that varies with time.

4) And determining a critical driving voltage curve according to the regulation voltage and the regulation duration set of each grid line.

In the implementation process, after each grid line regulation voltage is determined, the amplitude of the critical driving voltage curve on the vertical axis is determined by each grid line regulation voltage; after the regulation duration set is obtained, determining time points (T1, T2 … T9) of the critical driving voltage curve on the transverse axis according to each regulation duration in the regulation duration set, and further determining the critical driving voltage curve according to the amplitude and the time points.

If the continuous driving time length reaches any one target control time length in the preset control time length set, sending a target control signal corresponding to the target control time length to the PMIC, so that the PMIC generates a gate line control voltage corresponding to the target control signal, as shown in fig. 5, including:

Step 2021: comparing the continuous driving time length with each control time length in a preset control time length set, and determining the control time length equal to the continuous driving time length as a target control time length.

In the embodiment of the application, after the continuous driving time length of the GOA unit is determined in the working process of the display panel, the continuous driving time length is compared with each regulation time length in a preset regulation time length set, and the purpose of the comparison is to determine whether the use time length of the regulation voltage of the grid line is required to be regulated or not.

When the duration of the continuous driving duration reaches a certain regulation duration in the regulation duration set, determining the certain regulation duration equal to the duration of the continuous driving duration as a target regulation duration.

Step 2022: and sending a target regulation signal to the PMIC at a moment corresponding to the target regulation duration, so that the PMIC searches for a regulation voltage corresponding to the target regulation signal in a regulation voltage set, and determines the searched regulation voltage as a grid line regulation voltage.

In the implementation process, after determining the moment corresponding to the target regulation time length of the grid line regulation voltage to be changed, the TCON IC sends target regulation signals to the PMIC, and the regulation signals in the embodiment of the application correspond to the regulation voltages one by one, namely the PMIC can call a certain regulation voltage in a regulation voltage set, namely the grid line regulation voltage, according to different regulation signals; and the purposes of larger first driving voltage and smaller second driving voltage in the later stage of the display panel are achieved, so that the enough driving capability of the grid line regulation voltage is ensured, and the display effect of the display panel is ensured.

In the embodiment of the application, the corresponding relation between the regulation voltage set and the regulation signals, the regulation voltage set and each regulation signal are stored in the PMIC in advance, and in the implementation process, after the TCON IC sends the target regulation signal to the PMIC, the PMIC can search the corresponding regulation voltage in the regulation voltage set according to the target regulation signal, and the searched regulation voltage is determined to be the grid line regulation voltage, so that the scheme that the PMIC generates the first driving voltage VGH and the second driving voltage VGL at different moments is realized.

Based on the same inventive concept, referring to fig. 6, in an embodiment of the present disclosure, there is provided a driving control circuit including: flash, power management unit PMIC, timing conversion unit LEVEL SHIFT, GOA unit and timing controller TCON IC applying any one of the above drive control methods;

Both Flash and power management unit PMIC are coupled to TCON IC, PMIC is coupled to timing conversion unit LEVEL SHIFT, LEVEL SHIFT is coupled to GOA unit.

In the drive control circuit, flash is electrically connected with TCON IC, TCON IC is electrically connected with PMIC, PMIC is electrically connected with LEVEL SHIFT, LEVEL SHIFT is electrically connected with GOA unit.

In the embodiment of the application, the Flash is stored with an initial regulation voltage which can be sent to the TCON IC as a reference voltage, and the Flash is also provided with a register which is mainly used for storing the count value of the TCON IC and is used for the TCON IC to read the count value so that the TCON IC can be used for continuous counting, and the count value is the data recorded by the TCON IC through a timing module. In addition, a regulation duration set is stored in the TCON IC, and the TCON IC sends a target regulation signal corresponding to the target regulation duration to the PMIC by executing a driving control method, so that the PMIC generates a gate line regulation voltage, and it should be noted that the gate line regulation voltage may be a plurality of VGH and VGL voltages that change along with the target regulation duration. Further, LEVEL SHIFT converts the above-mentioned gate line control voltage into a driving voltage, for example, STV, CLK, VSS, VDDO, VDDE, etc., and the display panel displays under the driving voltage provided by the GOA unit.

Based on the same inventive concept, referring to fig. 7, in an embodiment of the present disclosure, there is provided a display device including: a display panel and the drive control circuit described above;

the display panel is driven by the drive control circuit to display.

In the implementation process, the display panel scans the gate lines, loads data signals and the like according to the driving voltage (STV, CLK, VSS, VDDO, VDDE) and the like provided by the driving control circuit at different use moments, so that the display and the like of the picture are performed.

In an embodiment of the present invention, the display device may be: any product or component with display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. Other essential components of the display device will be understood by those skilled in the art, and are not described herein in detail, nor should they be considered as limiting the invention.

In summary, the embodiment of the disclosure provides a driving control method, a driving control circuit and a display device, where the driving control method is applied to a timing controller TCON IC, a Flash and a power management unit PMIC are both coupled to the TCON IC, the PMIC is coupled to a timing conversion unit LEVEL SHIFT, and LEVEL SHIFT is coupled to a GOA unit, and the method includes: determining continuous driving time length of the GOA unit through a counting value of a timing module, wherein a timing starting point of the counting value is time when the GOA unit provides driving voltage for the grid line for the first time, if the continuous driving time length reaches any one target regulation time length in a preset regulation time length set, a target regulation signal corresponding to the target regulation time length is sent to the PMIC, so that the PMIC generates grid line regulation voltage corresponding to the target regulation signal, each regulation time length in the regulation time length set is determined based on a critical driving voltage curve of a driving transistor included in the GOA unit, the grid line regulation voltage is determined according to the critical driving voltage corresponding to the critical driving voltage curve and a preset safe floating value, and when the TCON IC timing reaches different using time lengths, different control signals are sent to the PMIC, so that the grid line regulation voltage changes along with characteristic drift of the driving transistor, display effect of a display panel is ensured, and service life of a product is prolonged.

It will be appreciated by those skilled in the art that embodiments of the present disclosure may be provided as a method, system, or computer program product system. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product system embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program product systems according to the disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present disclosure without departing from the spirit or scope of the disclosure. Thus, the present disclosure is intended to include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. A driving control method, applied to a timing controller TCON IC, a Flash and a power management unit PMIC are coupled to the TCON IC, the PMIC is coupled to a timing conversion unit LEVEL SHIFT, and the LEVEL SHIFT is coupled to a GOA unit, the method comprising:

Determining continuous driving time length of the GOA unit through a counting value of a timing module, wherein the timing starting point of the counting value is the moment when the GOA unit provides driving voltage for a grid line for the first time;

If the continuous driving time length reaches any one target regulation time length in a preset regulation time length set, a target regulation signal corresponding to the target regulation time length is sent to the PMIC, so that the PMIC generates a grid line regulation voltage corresponding to the target regulation signal, wherein each regulation time length in the regulation time length set is determined based on a critical driving voltage curve of a driving transistor included in the GOA unit, and the grid line regulation voltage is determined according to the critical driving voltage corresponding to the critical driving voltage curve and a preset safe floating value.

2. The method of claim 1, wherein the determining the continuous drive time of the GOA unit by the count value of the timing module comprises:

When the GOA unit is monitored to provide driving voltage for the grid line for the first time, starting the timing module to start counting, and obtaining a plurality of counting values;

And determining the continuous driving time length of the GOA unit according to each counting value and the preset unit counting time length, wherein the unit counting time length is used for representing the time length corresponding to the single counting of the timing module.

3. The method of claim 2, wherein starting the timing module to start counting when the GOA unit is monitored to provide the driving voltage to the gate line for the first time, and obtaining a plurality of count values, further comprises:

Sending a plurality of count values to Flash so that the Flash stores the count values respectively;

And if the GOA unit is powered off and restarted, reading the largest count value from the plurality of count values stored in the Flash, and taking the largest count value as the timing starting point.

4. A method as claimed in claim 3, wherein the method further comprises:

If the GOA unit is powered off and restarted, reading a stored current count value from the register, and acquiring the grid line regulation voltage from the PMIC;

Determining a counting range value according to the grid line regulation voltage and the unit counting time length, wherein the counting range value represents a plurality of counting values between a counting range minimum value and a counting range maximum value, the counting range minimum value is determined according to a first regulation time length corresponding to the grid line regulation voltage, the counting range maximum value is determined according to a second regulation time length, and the second regulation time length is the next regulation time length of the first regulation time length;

And if the current count value exceeds the count value represented by the count range value, taking the count range minimum value as the timing starting point.

5. The method of claim 1, wherein the threshold drive voltage curve is determined by:

the driving voltage extreme value required by the GOA unit to normally drive at each moment is obtained in advance, wherein the driving voltage extreme value comprises the minimum value of the first driving voltage and the maximum value of the second driving voltage;

If the extremum change value of any two continuous driving voltage extremums exceeds a preset change threshold, respectively determining two regulating and controlling duration based on the timing starting point and the moment corresponding to the any two continuous driving voltage extremums, and determining a regulating and controlling duration set according to each regulating and controlling duration;

Determining a plurality of grid line regulation voltages according to each driving voltage extreme value and a preset safe floating value;

And determining the critical driving voltage curve according to the grid line regulation voltage and the regulation duration set.

6. The method of claim 5, wherein if the driving voltage extremum is the minimum value of the first driving voltage, determining the plurality of gate line regulated voltages based on each of the driving voltage extremum and a preset safe floating value comprises:

And adding the preset safe floating value to each driving voltage extreme value to obtain a plurality of grid line regulating voltages.

7. The method of claim 5, wherein if the driving voltage extremum is the maximum value of the second driving voltage, determining a plurality of the gate line regulated voltages according to each of the driving voltage extremum and a preset safe floating value comprises:

Subtracting the preset safe floating value from each driving voltage extreme value to obtain a plurality of grid line regulating voltages.

8. The method of claim 1, wherein if the continuous driving time period reaches any one of the target control time periods in the preset control time period set, sending a target control signal corresponding to the target control time period to the PMIC, so that the PMIC generates a gate line control voltage corresponding to the target control signal, comprising:

comparing the continuous driving time length with each regulation time length in the preset regulation time length set, and determining the regulation time length which is equal to the continuous driving time length as the target regulation time length;

And sending the target regulation and control signal to the PMIC at the moment corresponding to the target regulation and control duration, so that the PMIC searches the regulation and control voltage corresponding to the target regulation and control signal in a regulation and control voltage set, and determines the searched regulation and control voltage as the grid line regulation and control voltage.

9. A drive control circuit, characterized by comprising: flash, power management unit PMIC, timing conversion unit LEVEL SHIFT, GOA unit, and timing controller TCONIC to which the drive control method according to any one of claims 1 to 8 is applied;

the Flash and power management unit PMIC are both coupled to the TCON IC, the PMIC is coupled to the timing conversion unit LEVEL SHIFT, and the LEVEL SHIFT is coupled to the GOA unit.

10. A display device, comprising: a display panel and the drive control circuit according to claim 9;

the display panel is driven by the drive control circuit to display.