Display driving method, system, device, computer equipment and storage medium

Abstract

The present application relates to a display driving method, system, device, computer equipment and storage medium. The method is applied to a display screen driving circuit including a voltage discharge module and a row output switch module which are respectively arranged corresponding to the row lines of a display array. The method includes: in response to a display driving signal, periodically sending a row scanning signal to the row output switch modules corresponding to different row lines; when the row output switch module corresponding to the row line currently receiving the row scanning signal operates in the amplification region, driving the voltage discharge module corresponding to the current row line to operate so as to discharge the voltage on the current row line to the ground; otherwise, controlling the voltage discharge module to stop operating; when the light beads on the current row line are lit and the row output switch module corresponding to the current row line transitions from the conducting state to the cut-off state, driving the voltage discharge modules corresponding to the current row line and the next row line to operate. By adopting this method, the problems of smear and crosstalk in the display array can be avoided.

Description

Technical Field

[0001] The present application relates to the technical field of display screen display technology, and in particular, to a display driving method, system, device, computer device, storage medium, and computer program product. Background Art

[0002] In the existing LED (Light Emitting Diode) display screen driving method, the main method used is the dynamic scanning driving method. The so-called dynamic scanning driving means that the row output MOS (Metal-Oxide-Semiconductor Field-Effect Transistor) is used to sequentially light up the lamp beads in the LED array, and only one row of lamp beads is lit each time. Among the lamp beads in the lit row, to turn on the corresponding lamp bead, the column data of the corresponding lamp bead is turned on, and this lamp bead will light up. For the lamp beads in this row that do not need to be lit, their column data is turned off, so the lamp beads cannot form a conduction loop and will not light up. In the time of one frame, through the high-speed switching of the row transistors, the lamp beads on the array will be lit row by row, thereby forming a complete picture content.

[0003] However, when the LED display screen applies the above dynamic scanning driving method, a ghosting phenomenon will occur. Specifically, in the row scanning interval (i.e., the line change interval), the data of the previous row is displayed in the next row or the data of the next row is displayed in the previous row. In order to eliminate the ghosting phenomenon, some scholars have proposed the idea of adding a discharge circuit, that is, pulling down the voltage on the row line to the blanking voltage and a precharging circuit in the dynamic scanning driving scheme. However, through practice, it is found that during the discharge process, the voltage on the row line discharges quickly, but the blanking voltage value is too low, which is likely to cause the lamp beads to light up in series, that is, the caterpillar phenomenon occurs.

[0004] Therefore, it is necessary to provide a driving scheme with better effect for eliminating ghosting. Summary of the Invention

[0005] Based on this, in view of the above technical problems, it is necessary to provide a display driving method, device, computer device, computer-readable storage medium, and computer program product that can eliminate ghosting.

[0006] The present application provides a display driving method. It is applied to a display screen driving circuit, and the display screen driving circuit includes a voltage discharge module and a row output switch module that are connected to each other and are correspondingly arranged with the row lines of the display array;

[0007] The display driving method includes:

[0008] In response to the display driving signal, periodically send row scanning signals to the row output switch modules corresponding to different row lines;

[0009] When the row output switch module corresponding to the current row line operates in the amplification region, drive the voltage discharge module corresponding to the current row line to operate, so as to discharge the voltage on the current row line to the ground. The current row line is the row line corresponding to the currently received scan signal;

[0010] When the row output switch module corresponding to the current row line does not operate in the amplification region, control the voltage discharge module corresponding to the current row line to be in the cut-off state;

[0011] When the light-emitting diodes on the current row line are lit and the row output switch module corresponding to the current row line transitions from the conducting state to the cut-off state, drive the voltage discharge module corresponding to the current row line and the voltage discharge module corresponding to the next row line to operate, so as to discharge the voltages on the current row line and the next row line to the ground.

[0012] In one embodiment, the method further includes:

[0013] If the row output switch modules corresponding to the row lines other than the current row line are in the cut-off state, control the voltage discharge modules corresponding to the row lines other than the current row line to be in the cut-off state, so that the row lines other than the current row line are in the open-circuit state.

[0014] In one embodiment, the row output switch module corresponding to the current row line not operating in the amplification region includes the row output switch module corresponding to the current row line being in the conducting state;

[0015] After controlling the voltage discharge module corresponding to the current row line to be in the cut-off state when the row output switch module corresponding to the current row line does not operate in the amplification region, it further includes:

[0016] Send a discharge signal to the voltage discharge module corresponding to the current row line to control the voltage discharge module corresponding to the current row line to be in the conducting state;

[0017] After delaying a preset duration, send a state switching signal to the row output switch module corresponding to the current row line to control the row output switch module corresponding to the current row line to transition from the conducting state to the cut-off state.

[0018] In a second aspect, the present application further provides a display driving system, the system includes a controller, and a voltage discharge module and a row output switch module respectively arranged corresponding to the row lines of the display array;

[0019] The controller responds to the display driving signal and periodically sends a row scanning signal to the row output switch modules corresponding to different row lines. When the row output switch module corresponding to the current row line operates in the amplification region, the controller drives the voltage discharge module corresponding to the current row line to operate so as to discharge the voltage on the current row line to the ground. The current row line is the row line corresponding to the scanning signal currently received. When the row output switch module corresponding to the current row line does not operate in the amplification region, the controller controls the voltage discharge module corresponding to the current row line to be in the cut-off state. When the light beads on the current row line are lit and the row output switch module corresponding to the current row line transitions from the conducting state to the cut-off state, the controller drives the voltage discharge module corresponding to the current row line and the voltage discharge module corresponding to the next row line to operate so as to discharge the voltages on the current row line and the next row line to the ground.

[0020] In one embodiment, the system further includes a charge-discharge module, and the controller is connected to the row output switch module through the charge-discharge module.

[0021] In one embodiment, if the row output switch modules corresponding to the row lines other than the current row line are in the cut-off state, the controller controls the voltage discharge modules corresponding to the row lines other than the current row line to be in the cut-off state so that the row lines other than the current row line are in the open-circuit state.

[0022] In one embodiment, the row output switch module corresponding to the current row line not operating in the amplification region includes the row output switch module corresponding to the current row line being in the conducting state;

[0023] When the row output switch module corresponding to the current row line does not operate in the amplification region and after the controller controls the voltage discharge module corresponding to the current row line to be in the cut-off state, it further includes:

[0024] Sending a discharge signal to the voltage discharge module corresponding to the current row line to control the voltage discharge module corresponding to the current row line to be in the conducting state;

[0025] After delaying a preset duration, sending a state switching signal to the row output switch module corresponding to the current row line to control the row output switch module corresponding to the current row line to transition from the conducting state to the cut-off state.

[0026] In a third aspect, the present application further provides a display driving device applied to a display screen driving circuit. The display screen driving circuit includes a voltage discharge module and a row output switch module that are connected to each other and are correspondingly arranged with the row lines of the display array. The device includes:

[0027] A display driving signal response module for responding to the display driving signal and periodically sending a row scanning signal to the row output switch modules corresponding to different row lines;

[0028] The out-of-order broken circuit control module is used to drive the voltage discharge module corresponding to the current row line to work when the row output switch module corresponding to the current row line works in the amplification region, so as to discharge the voltage on the current row line to the ground. The current row line is the row line corresponding to the currently received scan signal. When the row output switch module corresponding to the current row line does not work in the amplification region, it controls the voltage discharge module corresponding to the current row line to be in the cut-off state;

[0029] The voltage discharge control module is used to drive the voltage discharge module corresponding to the current row line and the voltage discharge module corresponding to the next row line to work when the lamp beads on the current row line are lit and the row output switch module corresponding to the current row line transitions from the conduction state to the cut-off state, so as to discharge the voltages on the current row line and the next row line to the ground.

[0030] In a fourth aspect, the present application also provides a computer device. The computer device includes a memory and a processor. The memory stores a computer program. When the processor executes the computer program, the following steps are implemented:

[0031] Respond to the display drive signal and periodically send row scan signals to the row output switch modules corresponding to different row lines;

[0032] When the row output switch module corresponding to the current row line works in the amplification region, drive the voltage discharge module corresponding to the current row line to work, so as to discharge the voltage on the current row line to the ground. The current row line is the row line corresponding to the currently received scan signal;

[0033] When the row output switch module corresponding to the current row line does not work in the amplification region, control the voltage discharge module corresponding to the current row line to be in the cut-off state;

[0034] When the lamp beads on the current row line are lit and the row output switch module corresponding to the current row line transitions from the conduction state to the cut-off state, drive the voltage discharge module corresponding to the current row line and the voltage discharge module corresponding to the next row line to work, so as to discharge the voltages on the current row line and the next row line to the ground.

[0035] In a fifth aspect, the present application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, the following steps are implemented:

[0036] Respond to the display drive signal and periodically send row scan signals to the row output switch modules corresponding to different row lines;

[0037] When the row output switch module corresponding to the current row line works in the amplification region, drive the voltage discharge module corresponding to the current row line to work, so as to discharge the voltage on the current row line to the ground. The current row line is the row line corresponding to the currently received scan signal;

[0038] When the row output switch module corresponding to the current row line is not operating in the amplification region, control the voltage discharge module corresponding to the current row line to be in the cut-off state;

[0039] When the light-emitting diodes on the current row line are lit and the row output switch module corresponding to the current row line transitions from the conducting state to the cut-off state, drive the voltage discharge module corresponding to the current row line and the voltage discharge module corresponding to the next row line to operate, so as to discharge the voltages on the current row line and the next row line to the ground.

[0040] In a sixth aspect, the present application further provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0041] Respond to the display driving signal and periodically send row scanning signals to the row output switch modules corresponding to different row lines;

[0042] When the row output switch module corresponding to the current row line is operating in the amplification region, drive the voltage discharge module corresponding to the current row line to operate, so as to discharge the voltage on the current row line to the ground, where the current row line is the row line corresponding to the currently received scanning signal;

[0043] When the row output switch module corresponding to the current row line is not operating in the amplification region, control the voltage discharge module corresponding to the current row line to be in the cut-off state;

[0044] When the light-emitting diodes on the current row line are lit and the row output switch module corresponding to the current row line transitions from the conducting state to the cut-off state, drive the voltage discharge module corresponding to the current row line and the voltage discharge module corresponding to the next row line to operate, so as to discharge the voltages on the current row line and the next row line to the ground.

[0045] The above display driving method, system, device, computer equipment, storage medium and computer program product are different from traditional solutions. Instead of pulling the row line down to the blanking voltage, a voltage discharge module and a row output switch module are correspondingly arranged for each row line of the display array, so that the voltage on each row line can be independently controlled for discharge, and the method of breaking the loop in a staggered order is adopted. That is, when the row output switch module works in the amplification region, the voltage discharge module corresponding to the current row line is driven to work to discharge the voltage on the current row line to the ground. When the row output switch module corresponding to the current row line does not work in the amplification region, the voltage discharge module is controlled to stop working. When the lamp beads on the current row line are turned on and the row output switch module corresponding to the current row line transitions from the conduction state to the cut-off state, the voltage discharge module corresponding to the current row line and the voltage discharge module corresponding to the next row line are driven to work, realizing that when the row output switch module works in the amplification region, the voltage on the corresponding row line is pulled down. That is, during the off-cycle of the row data of the current row, the residual charge generated is continuously discharged to the ground, eliminating the influence of the output of the row output switch module and the row parasitic capacitance on the next row. And, when the row data of the next row is about to be turned on, the potential of the next row is pulled down through the voltage discharge circuit. In this way, even if the column data is turned on again, the potential at both ends of the lamp beads is at a low potential and does not form a conduction loop. Thus, the smear in the display screen can be effectively eliminated. Description of the Drawings

[0046] Figure 1 It is a schematic flowchart of the display driving method in an embodiment;

[0047] Figure 2 It is a timing diagram of the control of breaking the loop in a staggered order in an embodiment;

[0048] Figure 3 It is a block diagram of the architecture of the display driving system in an embodiment;

[0049] Figure 4 It is a schematic circuit diagram of the control of breaking the loop in a staggered order in an embodiment;

[0050] Figure 5 It is a detailed block diagram of the architecture of the display driving system in an embodiment;

[0051] Figure 6 It is a circuit diagram of the charging and discharging of the gate capacitance in an embodiment;

[0052] Figure 7 It is a block diagram of the structure of the display driving device in an embodiment;

[0053] Figure 8 It is an internal structure diagram of the computer equipment in an embodiment. Detailed Implementation Modes

[0054] In order to make the objectives, technical solutions, and advantages of the present application more clear and understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0055] In one embodiment, as Figure 1 shown, a display driving method is provided. In this embodiment, it is exemplified by the method being applied to a controller for controlling a display driving circuit of a display screen. The display driving circuit includes a display array, a controller, row transistors, and a voltage discharging module. Among them, the row transistors are composed of several row output switch modules. The row lines of the display array are respectively provided with a voltage discharging module and a row output switch module connected to each other. The controller is connected to the row output switch module. The voltage discharging module is used to discharge the voltage on the row line to the ground, that is, to control whether the row line is grounded. In this embodiment, the method includes the following steps:

[0056] Step 100, in response to a display driving signal, periodically send a row scanning signal to the row output switch modules corresponding to different row lines.

[0057] In this embodiment, the display driving circuit may be an LED display driving circuit, and the row output switch module may be a row output MOS module (hereinafter referred to as row output MOS). The voltage discharging module is used to discharge the voltage on the row line of the display array to the ground, that is, to control whether the row line is grounded. Further, it is to discharge the residual current on the row line when the row data is not fully turned on and not fully turned off to the ground, isolating the influence of the residual current on the circuit. Specifically, the voltage discharging module may be a voltage discharging circuit. The control terminal of the voltage discharging circuit itself is also a switching transistor, which may be a discharging MOS transistor. When the discharging MOS is turned on, the row line is grounded. When the discharging MOS is turned off, the row line is floating. In this embodiment, there are two ways for the voltage discharging module to pull down the potential (i.e., voltage) on the row line. The first is strong pull-down, and the second is weak pull-down. The so-called strong pull-down means that when the voltage discharging module is working, regardless of whether the row output MOS is in a saturated conduction state, it will not pull up the potential on the row line. Only after the voltage discharging module is turned off, the potential on the row line can be pulled up by the driving of the row output MOS. The so-called weak pull-down means that when the discharging circuit is working and the row output MOS is in the amplification region, it cannot pull up the potential on the row line. However, when the row output MOS is in a saturated conduction state, regardless of whether the discharging circuit is working or not, the row output MOS can quickly pull up the potential on the row line. Depending on the actual situation, both strong pull-down and weak pull-down can be applied in the actual driving process, and no limitation is made here.

[0058] In specific implementation, different from the traditional method of pulling down the potential on the row lines to the blanking voltage, in this embodiment, not all row lines are connected to the blanking voltage. Instead, a row output MOS module and a voltage discharge module are correspondingly arranged for each row line of the LED display array, so that the voltage of each row line can be independently controlled, and there is no need to maintain the blanking voltage on the row lines. It can be understood that a column output MOS is correspondingly arranged for each column line on the display array. The column output MOS is used to conduct the column line to the ground to realize the conduction of the constant-current PWM (Pulse Width Modulation) driving bead loop and light up the beads. When receiving the display driving signal, in response to the display driving signal, a row scanning signal is sent to the row output MOS corresponding to different row lines according to the clock signal period. Specifically, the row scanning signal can be sent to the row output MOS corresponding to the row line row by row periodically, so that the beads of the LED display array are lit row by row. It can be understood that in other embodiments, the row output switch module can also be other types of transistors, which are not specifically limited herein.

[0059] Step 200, when the row output switch module corresponding to the current row line works in the amplification region, drive the voltage discharge module corresponding to the current row line to work to discharge the voltage on the current row line to the ground. The current row line is the row line corresponding to the currently received scanning signal. When the row output switch module corresponding to the current row line does not work in the amplification region, control the voltage discharge module corresponding to the current row line to be in the cut-off state.

[0060] The row output switch module working in the amplification region means that the row output switch module transitions from the saturated cut-off state (hereinafter referred to as cut-off for short) to the saturated conduction state (hereinafter referred to as conduction for short), or from the saturated conduction to the saturated cut-off state. That is, the working state of the row output switch module is an unstable period. The core of this embodiment is that when the row output switch module works in the amplification region, the voltage discharge module works to discharge the voltage on the corresponding row line to the ground. When the row output switch module does not work in the amplification region, that is, in the conduction state or the cut-off state, the voltage discharge module does not work, and the voltage discharge module is controlled to be in the cut-off state to pull down the voltage on the row line in the way of misordering and breaking the loop.

[0061] When specifically implemented, taking the voltage discharge module pulling down the potential on the row line in a strong pull-down manner as an example, the process by which the controller responds to the display driving signal to sequentially turn on and realize row data switching can be as follows: Output an effective row scanning signal G1 to the row output MOS corresponding to the first row line (hereinafter referred to as the row one output MOS). The row one output MOS changes from the saturation cut-off state to the saturation conduction state. At this time, the voltage discharge module corresponding to the first row line (hereinafter referred to as the row one voltage discharge module) starts to work, discharges the voltage on the first row line to the ground, so that even if the row one output MOS has a signal output, the lamp beads do not conduct. Then, when the row one output MOS is completely in the saturation conduction state, control the row one voltage discharge module to stop working, that is, disconnect the voltage discharge circuit, and the row one voltage discharge module is in the cut-off state. At this time, the voltage on the first row line is quickly pulled up, and the lamp beads on the first row line conduct, and the lamp beads are lit.

[0062] Step 300, when the lamp beads on the current row line are lit and the row output switch module corresponding to the current row line transitions from the conduction state to the cut-off state, drive the voltage discharge module corresponding to the current row line and the voltage discharge module corresponding to the next row line to work to discharge the voltages on the current row line and the next row line to the ground.

[0063] After the LED beads on the first row line are all lit, the row one output MOS quickly changes from the conducting state to the cut-off state. At this time, the row one voltage discharge module is controlled to work again to discharge the voltage on the first row line to the ground. At this time, even if the row one output MOS still maintains a certain output, the LED beads on the first row line are not conducting. It should be particularly noted that in this embodiment, the voltage discharge module corresponding to the second row line (hereinafter referred to as the row two voltage discharge module) can be synchronously turned on when the row one voltage discharge module is working. After the row one voltage discharge module works and the row two voltage discharge module changes from the saturated cut-off state to the saturated conducting state, a valid row scan signal G2 is output to the second row line, that is, the G2 signal starts to be valid, and the row output MOS of the second row line (hereinafter referred to as the row two output MOS) starts to change from the saturated cut-off state to the saturated conducting state. At this time, the row two voltage discharge module is always working, and the row one voltage discharge module can be turned off after the row one output MOS is in the saturated cut-off state. When the row two output MOS is in the saturated conducting state, at this time, the row two voltage discharge module can start to change from the saturated conducting state to the saturated cut-off state. When the voltage discharge module of the second row line is in the saturated cut-off state, the row two output MOS will quickly light up the LED beads on the second row line, and at this time, the line change is completed. It can be understood that in other embodiments, the row one voltage discharge module can be made to work first, and then the row two voltage discharge module can be made to work, as long as it is satisfied that the row two voltage discharge module starts to work before the LED beads on the second row are lit. When the LED beads on the second row line are all lit, the LED beads on the subsequent row lines can also be scanned and driven in the above manner, which will not be elaborated here. Because the voltage discharge module pulls the row line low during the line change, the row line is always at a low potential, so the blanking voltage does not need to be maintained during the line change. For the column data corresponding to the line change, it can be controlled to be synchronized with the time point when the row output MOS is in the saturated conducting state, that is, when the voltage discharge module starts to turn off. At this time, the row scan signal can be used to correspond to the refresh of the column data, which will not be elaborated here either. In this embodiment, during the line change scanning drive process, by making the voltage discharge circuits corresponding to the current row line and the next row line work synchronously, the current row potential and the next row potential are both pulled low by the discharge circuit during the line change gap, so that the LED beads of adjacent two rows are both at a low potential, thus not forming a conducting loop. At this time, the column data is switched from the previous row to the next row. Since no conducting loop is formed, the replacement of the data on the column will not affect the LED beads, thereby further solving the problem of ghosting caused by timing mismatch.

[0064] In the above display driving method, different from the traditional scheme, the row lines are not pulled down to the blanking voltage. Instead, a voltage discharge module and a row output switch module are respectively arranged corresponding to each row line of the display array, so that the voltage on each row line can be independently controlled for discharge. And the method of breaking the loop in a staggered order is adopted, that is, when the row output switch module works in the amplification region, the voltage discharge module corresponding to the current row line is driven to work to discharge the voltage on the current row line to the ground. When the row output switch module corresponding to the current row line does not work in the amplification region, the voltage discharge module is controlled to stop working. When the lamp beads on the current row line are turned on and the row output switch module corresponding to the current row line transitions from the on state to the off state, the voltage discharge module corresponding to the current row line and the voltage discharge module corresponding to the next row line are driven to work, so as to pull down the voltage on the corresponding row line when the row output switch module works in the amplification region, that is, in the off cycle of the row data of the current row, the residual charge generated is continuously discharged to the ground, eliminating the influence of the output of the row output switch module and the row parasitic capacitance on the next row. And, when the row data of the next row is about to be turned on, the potential of the next row is pulled down through the voltage discharge circuit. In this way, even if the column data is turned on again, the potentials at both ends of the lamp beads are at a low potential and no conduction loop is formed. Thus, the smear in the display screen can be effectively eliminated.

[0065] Furthermore, this solution does not need to maintain the blanking voltage on the row lines. Therefore, it can also avoid the generation of the caterpillar phenomenon to a certain extent.

[0066] In one embodiment, that the row output switch module corresponding to the current row line does not work in the amplification region includes that the row output switch module corresponding to the current row line is in the on state;

[0067] When the row output switch module corresponding to the current row line does not work in the amplification region, after the controller controls the voltage discharge module corresponding to the current row line to be in the off state, it further includes:

[0068] Sending a discharge signal to the voltage discharge module corresponding to the current row line to control the voltage discharge module corresponding to the current row line to be in the on state, and after delaying a preset time period, sending a state switching signal to the row output switch module corresponding to the current row line to control the row output switch module corresponding to the current row line to transition from the on state to the off state.

[0069] As Figure 2 shown, at the beginning of the entire scan drive, the first effective signal is the discharge signal, which is different from all existing drive methods. When the discharge signal works in the saturation conduction state, the row signal starts to be effective, that is, it is ensured that when the row signal works in the amplification region, the discharge signal remains in the saturation conduction state. As Figure 2As shown, when the LED beads on the current row line are all lit and it is necessary to change to the next row for lighting, first, a discharge signal is sent to the voltage discharge module corresponding to the current row line to control the voltage discharge module corresponding to the current row line to be in the conducting state. Then, after a preset delay, a state switching signal is sent to the row output switch module corresponding to the current row line to control the row output switch module corresponding to the current row line to transition from the conducting state to the cut-off state. Specifically, it can be understood that the preset delay can be a very short duration, such as a millisecond-level duration. The discharge signal can be sent in advance according to the time point when the row one output signal is disconnected, ensuring that the discharge circuit is already in the saturated conducting state before the row one output signal changes from saturated conduction to saturated cut-off, so as to isolate the influence of the change of the row output signal on the circuit.

[0070] In one embodiment, if the row output switch modules corresponding to the row lines other than the current row line are in the cut-off state, control the voltage discharge modules corresponding to the row lines other than the current row line to be in the cut-off state, so that the row lines other than the current row line are in the open circuit state.

[0071] The open circuit state means a state that is neither connected to high nor grounded, that is, in a floating state. As described in the above embodiment, the function of the voltage discharge module is to control whether the row line is grounded. Specifically, when implementing, if the row output switch modules corresponding to other row lines except the current row line are in the cut-off state, then control the voltage discharge modules corresponding to the other row lines to be in the cut-off state, so that the other row lines are in the open circuit state. That is to say, when a certain row line is selected and other row lines are not selected, the other row lines are also in the open circuit state, and the row output MOS of the other row lines is also in the open circuit state. In this embodiment, the row line is in the open circuit floating state when not selected. Even if the LED bead has a short circuit or leakage, the circuit it conducts is still in the open circuit state. When the short-circuited LED bead is not selected, there will be no loop for conducting and lighting the LED bead. Therefore, the phenomenon of cross-lighting, that is, the caterpillar phenomenon, will not occur.

[0072] Specifically, assume that lamp beads A and C are lamp beads located on the same column line, and lamp bead C is the short-circuit point. For lamp bead C, its row and column can be regarded as conducting. That is, the second row (hereinafter referred to as row two) is conducting with the first column (hereinafter referred to as column one). In this embodiment, avoiding the series lighting of lamp beads can be divided into three stages. The first stage: Lamp bead A is normally conducting. Although lamp bead C has a short circuit, no conducting loop is formed. The second stage: When performing line-by-line scanning, lamp beads A and C switch between the corresponding two rows. At this time, the blanking and discharging circuits corresponding to the two rows work, and the residual current generated when row one is not completely turned off is discharged from the discharging circuit. The participation current generated when row two is not completely turned on is also discharged from the discharging circuit. For lamp bead A, its anode terminal is pulled low by the blanking and discharging. For lamp bead C, its anode terminal is also pulled low by the blanking and discharging circuit. At this time, even if lamp bead C conducts row two and column one, making there be a low potential on column one, for lamp bead A, both of its two ends are at low potential, so no potential for conducting the lamp bead is formed, thus avoiding the lighting of lamp bead A. The third stage: Light up lamp bead C. At this time, the discharging circuit of row two is turned off, the potential of row two rises, the data of column one conducts, and column one is at low potential, then lamp bead C is forward-conducted and lit. At this time, although lamp bead C has a reverse leakage situation, it can still be normally lit. For other lamp beads in the same column as lamp bead C, since the row corresponding to lamp bead C is in an open state when other rows are selected, it will not cause abnormal lighting of other rows. Although lamp bead C has a short-circuit situation, it can still be normally used. Therefore, by adopting the method of out-of-order loop-breaking control, the problem of series lighting of lamp beads can be fundamentally solved.

[0073] As Figure 3 shown, in one embodiment, the present application provides a display driving system, which includes a controller 310, and a row output switch module 320 and a voltage discharging module 330 that are connected to each other and are correspondingly arranged with the row lines of the display array;

[0074] The controller responds to the display driving signal and periodically sends a row scanning signal to the row output switch module corresponding to different row lines. When the row output switch module corresponding to the current row line works in the amplification region, the controller drives the voltage discharging module corresponding to the current row line to work to discharge the voltage on the current row line to the ground. The current row line is the row line corresponding to the currently received scanning signal. When the row output switch module corresponding to the current row line does not work in the amplification region, the controller controls the voltage discharging module corresponding to the current row line to be in a cut-off state. When the lamp bead on the current row line is lit and the row output switch module corresponding to the current row line transitions from the conducting state to the cut-off state, the controller drives the voltage discharging module corresponding to the current row line and the voltage discharging module corresponding to the next row line to work to discharge the voltages on the current row line and the next row line to the ground.

[0075] In this embodiment, the line output switch module may be a line output MOS, and the voltage discharge module may be a voltage discharge loop. For each row line on the display array, a line output MOS module and a voltage discharge module are correspondingly provided, so that the voltage of each row line can be independently controlled, and there is no need to maintain the blanking voltage on the row line. It can be understood that a column output MOS is also correspondingly provided for each column line on the display array. Specifically in implementation, the display driving system still performs scanning driving in the way of staggering and breaking the loop as described in the above embodiment. In response to the display driving signal, a row scanning signal is periodically sent to the line output MOS corresponding to the row line row by row. Combining Figure 4 with the circuit schematic diagram of the way of staggering and breaking the loop shown in FIG. Figure 4 , G1 to G4 are the row scanning signals for driving the rows to light up. Since the LED array is scanned and driven, the row scanning signals will cycle from G1 to G4, and only one row signal is valid within a time segment, lighting up one row of lamp beads. By alternately scanning on these 4 rows of lamp beads, the content to be displayed can be shown. The voltage discharge control module is invalid when the line output MOS works in the saturation conduction and saturation cut-off states, and is valid when the line MOS output works in the amplification region according to the row refresh clock.

[0076] Specifically in implementation, taking the example that the voltage discharge module pulls down the potential on the row line in a strong pull-down manner, the process of the controller responding to the display driving signal to conduct row by row to achieve row data switching can be as follows: Output an effective row scanning signal G1 to the line output MOS corresponding to the first row line (hereinafter referred to as the row one output MOS). The row one output MOS changes from the saturation cut-off state to the saturation conduction state. At this time, the controller drives the row one voltage discharge module to start working, discharging the voltage on the first row line to the ground. Even if the row one output MOS has a signal output, the lamp beads are not conducted. Then, when the row one output MOS is completely in the saturation conduction state, the controller controls the row one voltage discharge module to stop working, that is, disconnects the voltage discharge circuit, and the row one voltage discharge module is in the cut-off state. At this time, the voltage on the first row line is quickly pulled up, and the lamp beads on the first row line are conducted and the lamp beads are lit.

[0077] After the LEDs on the first row line are all lit, the row one output MOS quickly changes from the conducting state to the cut-off state. At this time, the row one voltage discharge module is controlled to work again to discharge the voltage on the first row line to ground. At this time, even if the row one output MOS still maintains a certain output, the LEDs on the first row line are not conducting. It should be noted that in this embodiment, when the row one voltage discharge module is working, the row two voltage discharge module is synchronously turned on. After the row one voltage discharge module finishes working and the row two voltage discharge module changes from the saturated cut-off state to the saturated conducting state, the G2 signal becomes valid, and the row two output MOS starts to change from the saturated cut-off state to the saturated conducting state. At this time, the row two voltage discharge module is always working, and the row one voltage discharge module can be turned off after the row one output MOS is in the saturated cut-off state. When the row two output MOS is in the saturated conducting state, at this time, the row two voltage discharge module can start to change from the saturated conducting state to the saturated cut-off state. When the voltage discharge module on the second row line is in the saturated cut-off state, the row two output MOS will quickly light up the LEDs on the second row line, and at this time, the line change is completed. It can be understood that in other embodiments, the row one voltage discharge module can be made to work first, and then the row two voltage discharge module can be made to work, as long as it is satisfied that the row two voltage discharge module starts to work before the LEDs on the second row are lit. And when the LEDs on the second row line are all lit, to light up the LEDs on the subsequent row lines, the scanning drive can also be performed in the above manner, which will not be elaborated here. For the column data corresponding to the line change, it can be controlled to be synchronized with the time point when the row output MOS is in the saturated conducting state, that is, when the voltage discharge module starts to turn off. At this time, the row scanning signal can be used to correspond to the refresh of the column data, which will not be elaborated here either. In this embodiment, during the line change scanning drive process, by making the voltage discharge circuits corresponding to the current row line and the next row line work synchronously, the current row potential and the next row potential are both pulled down by the discharge circuit during the line change interval, so that the LEDs on adjacent two rows are both at a low potential, thus not forming a conducting loop. At this time, the column data is switched from the previous row to the next row. Since no conducting loop is formed, the replacement of the data on the column will not affect the LEDs, thereby further solving the ghosting problem caused by timing mismatch.

[0078] In the above display driving system, different from the traditional solution, the row lines are not pulled down to the blanking voltage. Instead, a voltage discharging module and a row output switch module are respectively arranged corresponding to each row line of the display array, so that the voltage on each row line can be independently controlled for discharging, and the method of breaking the loop in disorder is adopted. That is, when the row output switch module works in the amplification region, the voltage discharging module corresponding to the current row line is driven to work to discharge the voltage on the current row line to the ground. When the row output switch module corresponding to the current row line does not work in the amplification region, the voltage discharging module is controlled to stop working by the controller. When the light-emitting diodes on the current row line are turned on and the row output switch module corresponding to the current row line transitions from the on state to the off state, the voltage discharging module corresponding to the current row line and the voltage discharging module corresponding to the next row line are driven to work, so as to pull down the voltage on the row line when the row output switch module works in the amplification region. That is, in the off period of the row data of the current row, the residual charge generated is continuously discharged to the ground, eliminating the influence of the output of the row output switch module and the row parasitic capacitance on the next row. Moreover, when the row data of the next row is about to be turned on, the potential of the next row is pulled down through the voltage discharging circuit. In this way, even if the column data is turned on again, the potentials at both ends of the light-emitting diodes are at a low potential and no conduction loop is formed. Thus, the smear in the display screen can be effectively eliminated.

[0079] Moreover, this solution does not need to maintain the blanking voltage on the row lines. Therefore, the generation of the caterpillar phenomenon can also be avoided to a certain extent.

[0080] As Figure 5 shown, in one embodiment, the system further includes a charge-discharge module 340, and the controller 310 is connected to the row output switch module 320 through the charge-discharge module 340.

[0081] In this embodiment, the charge-discharge module can be a fast charge-discharge module. As Figure 5 shown, the source of the row output MOS transistor is connected to the power supply, the drain is connected to the row line, and the charge-discharge module is connected between the controller and the row output MOS. The gate of each row output MOS is driven by a fast charge-discharge module to accelerate the fast conduction and cut-off of the gate. The fast charge-discharge module is driven by the controller to realize the switching of row data by sequentially conducting rows. Specifically, the circuit form of the fast charge-discharge module for accelerating the charging and discharging of the gate capacitance is as Figure 6As shown. Among the output pins of the line transistor, the source is connected to the 5V power supply, the drain is connected to the line, and the gate is connected to two transistors, namely the totem pole circuit shown in the figure. The upper transistor is an NPN (Negative-Positive-Negative) transistor, and the lower transistor is a PNP (Positive-Negative-Positive) transistor. By controlling the signal switching of the previous stage, the upper transistor and the lower transistor are respectively turned on, so that the gate capacitance of the MOS transistor can be quickly charged and discharged. Its specific charge and discharge mechanism is to control the output drive control signal of the previous stage. For example, when the drive signal is set to "1", it is a high level, and the upper transistor is turned on. At this time, the gate capacitance corresponding to the line transistor is directly connected to 5V and quickly charged. To avoid the influence of the spike voltage, a resistor R is set in series with the gate. When the drive signal is set to "0", it is a low level. At this time, the lower transistor is turned on, and the gate capacitance corresponding to the line transistor is directly grounded, and the capacitance is quickly pulled down. Applying the above fast charge and discharge mechanism to the LED display drive means that before the current line is turned on, first, by controlling the previous stage, the gate capacitance of the line transistor is quickly charged, so that the gate of the line transistor quickly reaches the conduction voltage and the line signal is output. When it is necessary to turn off the line signal, it is to quickly discharge the gate capacitance of the line transistor by controlling the previous stage, so that the gate of the line transistor quickly reaches the turn-off voltage and the signal is disconnected. In this way, the conduction speed of the line MOS output is accelerated.

[0082] During specific implementation, when the controller generates an effective line scan signal, the fast charge and discharge module quickly charges the gate of the line output MOS of the line corresponding to the received line scan signal, and the gate of the line output MOS quickly changes from the saturation cut-off state to the saturation conduction state. When the lamp beads on the current line are lit up, the fast charge and discharge circuit of the current line quickly discharges the gate of the line output MOS corresponding to the current line, so that the line output MOS corresponding to the current line quickly changes from the saturation conduction state to the saturation cut-off state. In this embodiment, the fast charge and discharge module can solve the problem that the conduction and cut-off speeds of the gate capacitance are relatively slow, and further provide assistance for solving the problem of smear caused by the existence of parasitic capacitance on the line and the relatively slow conduction and cut-off times of the line MOS output.

[0083] As Figure 5 shown, in one embodiment, the system further includes a pre-charge module 350. The pre-charge module 350 is connected to the column lines of the display array and is connected to the column output switch module 360 (which can be a column output MOS) for pre-charging and raising the potential on the column lines. The pre-charge module 350 and the column output MOS 360 are provided on the constant current drive chip. In this embodiment, by raising the potential on the column lines, it can be ensured that both ends of the lamp beads are in a high potential state and no voltage difference will be generated.

[0084] In one embodiment, the row output switch module corresponding to the current row line not operating in the amplification region includes that the row output switch module corresponding to the current row line is in the conducting state;

[0085] When the row output switch module corresponding to the current row line does not operate in the amplification region, after the controller controls the voltage discharge module corresponding to the current row line to be in the cut-off state, it further includes: sending a discharge signal to the voltage discharge module corresponding to the current row line to control the voltage discharge module corresponding to the current row line to be in the conducting state, and after delaying a preset duration, sending a state switching signal to the row output switch module corresponding to the current row line to control the row output switch module corresponding to the current row line to transition from the conducting state to the cut-off state.

[0086] During specific implementation, as Figure 2 shown, at the beginning of the entire scan drive, the first effective signal is the discharge signal. When the discharge signal operates in the saturation conduction state, the row signal starts to be effective, that is, it is ensured that when the row signal operates in the amplification region, the discharge signal remains in the saturation conduction state. As Figure 2 shown, during the process of finishing lighting the light beads on the current row line and needing to change to the next row for lighting, first, send a discharge signal to the voltage discharge module corresponding to the current row line to control the voltage discharge module corresponding to the current row line to be in the conducting state, and then, after delaying a preset duration, send a state switching signal to the row output switch module corresponding to the current row line to control the row output switch module corresponding to the current row line to transition from the conducting state to the cut-off state. Specifically, it can be understood that the preset duration of the delay can be a very short duration such as a millisecond-level duration, and the discharge signal can be sent in advance according to the time node when the row output signal is disconnected, ensuring that the discharge circuit is already in the saturation conduction state before the row output signal changes from saturation conduction to saturation cut-off, so as to isolate the influence of the change of the row output signal on the circuit.

[0087] In one embodiment, if the row output switch module corresponding to the row line does not operate in the amplification region, the controller controls the voltage discharge module corresponding to the row line to be in the cut-off state, so that the row line is in an open circuit state.

[0088] During specific implementation, if the row output switch module corresponding to the row line does not operate in the amplification region, the controller controls the voltage discharge module corresponding to the row line to be in the cut-off state, making the row line in an open circuit state. That is to say, when a certain row line is selected and other row lines are not selected, other row lines are in an open circuit state, and the row output MOS of other row lines is also in an open circuit state. In this embodiment, the row line is in an open circuit and floating state when not selected. Even if the light bead has a short circuit or leakage, the circuit it conducts is still in an open circuit state. When the short-circuited light bead is not selected, there will be no loop for conducting and lighting the light bead, so the phenomenon of string lighting, that is, the caterpillar phenomenon, will not occur.

[0089] Specifically, in combination withFigure 3 , the lamp bead C is a short - circuit point. For the lamp bead C, its row and column can be regarded as conducting. That is, the second row (hereinafter referred to as row two) is conducting with the first column (hereinafter referred to as column one). In this embodiment, avoiding the series - lighting of lamp beads can be divided into three stages. The first stage: The lamp bead A conducts normally. Although the lamp bead C has a short - circuit, no conducting loop is formed. The second stage: When switching rows during scanning, the lamp beads A and C switch between the corresponding two rows. At this time, the blanking and discharging circuits corresponding to the two rows work. The residual current generated when row one is not completely turned off is discharged from the discharging circuit. The participation current generated when row two is not completely turned on is also discharged from the discharging circuit. For the lamp bead A, its anodic end is pulled low by the blanking and discharging. For the lamp bead C, its anodic end is also pulled low by the blanking and discharging circuit. At this time, even if the lamp bead C conducts row two and column one, making there be a low potential on column one, for the lamp bead A, both ends of it are at low potential, so no potential for conducting the lamp bead is formed, thus avoiding the lighting of the lamp bead A. The third stage: Light the lamp bead C. At this time, the discharging circuit of row two is turned off, the potential of row two rises, the data of column one conducts, and column one is at low potential, then the lamp bead C is forward - conducted and lit. At this time, although the lamp bead C has reverse leakage, it can still be normally lit. For other lamp beads in the same column as the lamp bead C, since when other rows are selected, the row corresponding to the lamp bead C is in an open - circuit state, it will not cause abnormal lighting of other rows. Although the lamp bead C has a short - circuit situation, it can still be used normally. Therefore, by adopting the method of out - of - order broken - loop control, the problem of series - lighting of lamp beads can be fundamentally solved.

[0090] It should be understood that although each step in the flowcharts involved in the above - mentioned embodiments is shown in sequence according to the indication of the arrow, these steps do not necessarily need to be executed in the order indicated by the arrow. Unless there is a clear description in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above - mentioned embodiments may include multiple steps or multiple stages. These steps or stages do not necessarily need to be executed at the same moment, but can be executed at different moments. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or steps or stages in other steps.

[0091] Based on the same inventive concept, the embodiment of the present application also provides a display driving device for implementing the above - mentioned display driving method. The solution provided by this device to solve the problem is similar to the solution described in the above - mentioned method. Therefore, the specific limitations in one or more embodiments of the following display driving devices can refer to the limitations on the display driving method in the above text, and will not be repeated here.

[0092] In one embodiment, as Figure 7As shown, a display driving device is provided, which is applied to a display driving circuit. The display driving circuit includes a voltage discharging module and a row output switch module that are connected to each other and are correspondingly arranged with the row lines of the display array. The device includes a display driving signal response module 710, a misaligned circuit-breaking control module 720, and a voltage discharging control module 730:

[0093] The display driving signal response module 710 is configured to respond to the display driving signal and periodically send a row scanning signal to the row output switch module corresponding to different row lines;

[0094] The misaligned circuit-breaking control module 720 is configured to drive the voltage discharging module corresponding to the current row line to work to discharge the voltage on the current row line to the ground when the row output switch module corresponding to the current row line is operating in the amplification region. The current row line is the row line corresponding to the currently received scanning signal. When the row output switch module corresponding to the current row line is not operating in the amplification region, it controls the voltage discharging module corresponding to the current row line to be in the cut-off state;

[0095] The voltage discharging control module 730 is configured to drive the voltage discharging module corresponding to the current row line and the voltage discharging module corresponding to the next row line to work to discharge the voltages on the current row line and the next row line to the ground when the lamp beads on the current row line are lit and the row output switch module corresponding to the current row line transitions from the conducting state to the cut-off state.

[0096] In the above display driving device, different from the traditional scheme, the row line is not pulled down to the blanking voltage. Instead, a voltage discharging module and a row output switch module are correspondingly arranged for each row line of the display array, so that the voltage on each row line can be independently controlled for discharging. And the misaligned circuit-breaking method is adopted, that is, when the row output switch module is operating in the amplification region, the voltage discharging module corresponding to the current row line is driven to work to discharge the voltage on the current row line to the ground. When the row output switch module corresponding to the current row line is not operating in the amplification region, the voltage discharging module is controlled to stop working. When the lamp beads on the current row line are turned on and the corresponding row output switch module of the current row line transitions from the conducting state to the cut-off state, the voltage discharging module corresponding to the current row line and the voltage discharging module corresponding to the next row line are driven to work, so as to pull down the voltage on the row line when the row output switch module is operating in the amplification region, that is, during the off period of the row data of the current row, the residual charge generated is continuously discharged to the ground, eliminating the influence of the output of the row output switch module and the row parasitic capacitance on the next row. And when the row data of the next row is about to be turned on, the potential of the next row is pulled down through the voltage discharging circuit. In this way, even if the column data is turned on again, the potentials at both ends of the lamp beads are at a low potential and do not form a conducting loop. Thus, the smear in the display screen can be effectively eliminated.

[0097] In one embodiment, the out-of-order line break circuit control module 720 is further configured to control the voltage discharge module corresponding to the row lines other than the current row line to be in a cut-off state if the row output switch module corresponding to the row lines other than the current row line is in a cut-off state, so that the row lines other than the current row line are in an open circuit state.

[0098] In one embodiment, the out-of-order line break circuit control module 720 is further configured to, when the row output switch module corresponding to the current row line is in a conducting state, after the controller controls the voltage discharge module corresponding to the current row line to be in a cut-off state, send a discharge signal to the voltage discharge module corresponding to the current row line to control the voltage discharge module corresponding to the current row line to be in a conducting state, and after a preset time delay, send a state switching signal to the row output switch module corresponding to the current row line to control the row output switch module corresponding to the current row line to transition from a conducting state to a cut-off state.

[0099] Each module in the above display driving device can be implemented in whole or in part by software, hardware, and their combination. Each of the above modules can be embedded in the processor in the computer device in hardware form or be independent of it, or can be stored in the memory in the computer device in software form, so that the processor can call and execute the operations corresponding to each of the above modules.

[0100] In one embodiment, a computer device is provided. The computer device can be a server, and its internal structure diagram can be as Figure 8 shown. The computer device includes a processor, a memory, and a network interface connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data to be displayed and data. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, it implements a display driving method.

[0101] Those skilled in the art can understand that Figure 8 the structure shown in

[0102] is only a block diagram of some structures related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine some components, or have different component arrangements.

[0103] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above display driving method are implemented.

[0104] In one embodiment, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the steps in the above display driving method are implemented.

[0105] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, database, or other medium used in the various embodiments provided in this application can include at least one of non-volatile and volatile memories. Non-volatile memories can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memories can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The databases involved in the various embodiments provided in this application can include at least one of relational databases and non-relational databases. Non-relational databases can include distributed databases based on blockchain, etc., without limitation. The processors involved in the various embodiments provided in this application can be general-purpose processors, central processors, graphics processors, digital signal processors, programmable logic devices, data processing logics based on quantum computing, etc., without limitation.

[0106] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0107] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A display driving method, characterized in that, Applied to a display driving circuit, the display driving circuit includes a voltage discharge module and a row output switch module which are connected to each other and are correspondingly arranged with the row lines of a display array; The display driving method includes: In response to a display driving signal, periodically sending a row scanning signal to the row output switch modules corresponding to different row lines; When the row output switch module corresponding to the current row line operates in the amplification region, driving the voltage discharge module corresponding to the current row line to operate to discharge the voltage on the current row line to the ground. The current row line is the row line corresponding to the scanning signal currently received. When the row output switch module corresponding to the current row line does not operate in the amplification region, controlling the voltage discharge module corresponding to the current row line to be in a saturation cut-off state. The row output switch module operating in the amplification region means the process that the row output switch module transitions from the saturation cut-off state to the saturation conduction state, or from the saturation conduction state to the saturation cut-off state; When the light beads on the current row line are lit and the row output switch module corresponding to the current row line transitions from the saturation conduction state to the saturation cut-off state, driving the voltage discharge module corresponding to the current row line and the voltage discharge module corresponding to the next row line to operate to discharge the voltages on the current row line and the next row line to the ground.

2. The display driving method according to claim 1, wherein The row output switch module corresponding to the current row line not operating in the amplification region includes the row output switch module corresponding to the current row line being in the saturation conduction state; When the row output switch module corresponding to the current row line does not operate in the amplification region and after controlling the voltage discharge module corresponding to the current row line to be in the saturation cut-off state, it further includes: Sending a discharge signal to the voltage discharge module corresponding to the current row line to control the voltage discharge module corresponding to the current row line to be in the saturation conduction state; After delaying a preset duration, sending a state switching signal to the row output switch module corresponding to the current row line to control the row output switch module corresponding to the current row line to transition from the saturation conduction state to the saturation cut-off state.

3. The display driving method according to claim 1, wherein The display driving circuit includes an LED display driving circuit.

4. A display driving system, characterized in that, The system includes a controller, and a voltage discharge module and a row output switch module which are correspondingly arranged with the row lines of a display array; The controller, in response to a display driving signal, periodically sends a row scanning signal to the row output switch modules corresponding to different row lines. When the row output switch module corresponding to the current row line operates in the amplification region, the controller drives the voltage discharge module corresponding to the current row line to operate to discharge the voltage on the current row line to the ground. The current row line is the row line corresponding to the scanning signal currently received. When the row output switch module corresponding to the current row line does not operate in the amplification region, the controller controls the voltage discharge module corresponding to the current row line to be in the saturation cut-off state. When the light beads on the current row line are lit and the row output switch module corresponding to the current row line transitions from the saturation conduction state to the saturation cut-off state, the controller drives the voltage discharge module corresponding to the current row line and the voltage discharge module corresponding to the next row line to operate to discharge the voltages on the current row line and the next row line to the ground; Wherein, the line output switch module operating in the amplification region means the process that the line output switch module transitions from the saturation cut-off state to the saturation conduction state, or from the saturation conduction state to the saturation cut-off state.

5. The display driving system according to claim 4, wherein, The system further includes a charge and discharge module, and the controller is connected to the line output switch module through the charge and discharge module.

6. The display driving system according to claim 4, characterized in that, The line output switch module corresponding to the current row line not operating in the amplification region includes that the line output switch module corresponding to the current row line is in the saturation conduction state; When the line output switch module corresponding to the current row line does not operate in the amplification region, after the controller controls the voltage discharge module corresponding to the current row line to be in the saturation cut-off state, it further includes: Sending a discharge signal to the voltage discharge module corresponding to the current row line to control the voltage discharge module corresponding to the current row line to be in the saturation conduction state; After delaying a preset duration, sending a state switching signal to the line output switch module corresponding to the current row line to control the line output switch module corresponding to the current row line to transition from the saturation conduction state to the saturation cut-off state.

7. A display driving device, characterized in that, Applied to a display screen driving circuit, the display screen driving circuit includes a voltage discharge module and a line output switch module that are connected to each other and are correspondingly arranged with the row lines of the display array; The display driving device includes: A display driving signal response module, configured to respond to a display driving signal and periodically send a row scanning signal to the line output switch modules corresponding to different row lines; A misorder break loop control module, configured to drive the voltage discharge module corresponding to the current row line to operate to discharge the voltage on the current row line to the ground when the line output switch module corresponding to the current row line operates in the amplification region, where the current row line is the row line corresponding to the currently received scanning signal, and to control the voltage discharge module corresponding to the current row line to be in the saturation cut-off state when the line output switch module corresponding to the current row line does not operate in the amplification region, wherein the line output switch module operating in the amplification region means the process that the line output switch module transitions from the saturation cut-off state to the saturation conduction state, or from the saturation conduction state to the saturation cut-off state; A voltage discharge control module, configured to drive the voltage discharge module corresponding to the current row line and the voltage discharge module corresponding to the next row line to operate to discharge the voltages on the current row line and the next row line to the ground when the light-emitting diodes on the current row line are lit and the line output switch module corresponding to the current row line transitions from the saturation conduction state to the saturation cut-off state.

8. A computer device, comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 3.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the method according to any one of claims 1 to 3.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the method according to any one of claims 1 to 3.

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