Display driving method, display driving circuit and display device

Abstract

The present application provides a display driving method, a display driving circuit, and a display device, relating to the field of display technology. The display driving method includes: during the display period of a current frame, obtaining a polarity cumulative value corresponding to the current frame based on a polarity cumulative value corresponding to a previous frame, the display duration of the previous frame, and the polarity of a driving voltage within the previous frame; if the polarity cumulative value corresponding to the current frame meets a compensation condition, determining a compensation frame based on the polarity of the driving voltage within the current frame and a target polarity; wherein the target polarity is the polarity corresponding to the polarity cumulative value of the current frame; the compensation frame is a display frame located after the current frame; when displaying the compensation frame, driving a display panel using a driving voltage of a polarity opposite to the target polarity. This can avoid display panel polarization, reduce screen flicker, and improve display quality.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display driving method, a display driving circuit, and a display device. Background Art

[0002] Liquid crystal display panels are typically driven by alternating positive and negative polarity frames. When the refresh rate changes, the duration of the displayed frames varies, resulting in a difference in the duration of the positive and negative polarity frames.

[0003] Due to the difference in duration between positive and negative polarity frames, the positive and negative polarity drive voltages last for different durations, resulting in a prolonged imbalance in the positive and negative electric fields of the liquid crystal. When a certain polarity drive voltage accumulates for too long, it can easily cause panel polarization, resulting in screen flicker. Summary of the Invention

[0004] The present application provides a display driving method, a display driving circuit, and a display device, which can solve the problem that excessive accumulation of a certain polarity easily causes panel polarization and screen flickering.

[0005] In a first aspect, the present application provides a display driving method, the display driving method comprising:

[0006] During the display of the current frame, the polarity cumulative value corresponding to the current frame is obtained according to the polarity cumulative value corresponding to the previous frame, the display duration of the previous frame, and the polarity of the driving voltage in the previous frame;

[0007] When the polarity cumulative value corresponding to the current frame meets the compensation condition, a compensation frame is determined according to the polarity of the driving voltage in the current frame and a target polarity; wherein the target polarity is the polarity corresponding to the polarity cumulative value of the current frame; and the compensation frame is a display frame located after the current frame;

[0008] When displaying the compensation frame, the display panel is driven by a driving voltage having a polarity opposite to the target polarity.

[0009] Optionally, determining the compensation frame according to the polarity of the driving voltage in the current frame and the target polarity includes:

[0010] According to the polarity of the driving voltage in the current frame, a frame subsequent to the target frame is determined as the compensation frame; wherein the target frame is the first display frame starting from the current frame that adopts a driving voltage with a polarity opposite to the target polarity.

[0011] Optionally, determining a subsequent frame of the target frame as the compensation frame according to the polarity of the driving voltage in the current frame includes:

[0012] In a case where the polarity of the driving voltage of the current frame is different from the target polarity, determining a first frame after the current frame as the compensation frame; wherein the target frame is the current frame;

[0013] When the polarity of the driving voltage of the current frame is the same as the target polarity, the second frame after the current frame is determined as the compensation frame; wherein the target frame is the first frame after the current frame.

[0014] Optionally, the method further includes:

[0015] When the polarity cumulative value corresponding to the current frame does not meet the compensation condition, when displaying the next frame of the current frame, the display panel is driven by a driving voltage with a polarity opposite to that of the current frame.

[0016] Optionally, obtaining the polarity cumulative value corresponding to the current frame according to the polarity cumulative value corresponding to the previous frame, the display duration of the previous frame, and the polarity of the driving voltage in the previous frame includes:

[0017] Obtaining a polarity cumulative value corresponding to the current frame according to the polarity cumulative value corresponding to the previous frame, a level state of the polarity control signal in the previous frame, and a duration of the level state;

[0018] The polarity control signal is used to control the polarity of the driving voltage of the corresponding display frame; the polarity control signal has a first level state and a second level state, the duration of the first level state is a positive value, and the duration of the second level state is a negative value.

[0019] Optionally, before determining the compensation frame according to the polarity of the driving voltage in the current frame and the target polarity, the method further includes:

[0020] When the target cumulative value is greater than a preset cumulative threshold, determining that the polarity cumulative value corresponding to the current frame meets the compensation condition;

[0021] When the target cumulative value is less than or equal to the cumulative threshold, it is determined that the polarity cumulative value corresponding to the current frame does not meet the compensation condition; wherein the target cumulative value is the absolute value of the polarity cumulative value corresponding to the current frame.

[0022] Optionally, the method further includes:

[0023] When displaying the compensation frame, the row turn-on voltage provided to the display panel is lower than the row turn-on voltage provided during the target frame.

[0024] In a second aspect, the present application provides a display driving circuit, the display driving circuit comprising a timing control circuit and a source driving circuit;

[0025] The timing control circuit is electrically connected to the source driver circuit and is configured to, during a display period of a current frame, obtain a polarity cumulative value corresponding to the current frame based on a polarity cumulative value corresponding to a previous frame, a display duration of the previous frame, and a polarity of a driving voltage in the previous frame; determine a compensation frame based on the polarity of the driving voltage in the current frame and a target polarity if the polarity cumulative value corresponding to the current frame meets a compensation condition; and send a first control signal to the source driver circuit when displaying the compensation frame;

[0026] The source driving circuit is configured to provide a driving voltage of corresponding polarity to the display panel in response to the first control signal; wherein the target polarity is the polarity corresponding to the polarity accumulated value of the current frame; the compensation frame is a display frame located after the current frame; the first control signal is a polarity control signal, and the polarity corresponding to the level state of the first control signal is opposite to the target polarity.

[0027] Optionally, the display driving circuit further includes a gate driving circuit;

[0028] The timing control circuit is electrically connected to the gate driving circuit and is configured to control the gate driving circuit so that a row start voltage provided to the display panel when displaying the compensation frame is smaller than a row start voltage provided during the target frame.

[0029] Optionally, the display driving circuit further includes a power management circuit and a level conversion circuit;

[0030] The timing control circuit is electrically connected to the power management circuit and is configured to control the output voltage provided by the power management circuit to the level conversion circuit to be reduced to a compensation voltage;

[0031] The level conversion circuit is electrically connected to the gate driving circuit and is configured to provide an input signal to the gate driving circuit according to the compensation voltage when displaying the compensation frame, so that the gate driving circuit provides a row start voltage to the display panel according to the input signal.

[0032] Optionally, the display driving circuit further includes a power management circuit, a level conversion circuit and a switching circuit;

[0033] The timing control circuit is electrically connected to the switch circuit and is configured to send a switch control signal to the switch circuit;

[0034] The switching circuit is also electrically connected to the power management circuit and the level conversion circuit, respectively, and is configured to, in response to the switching control signal, turn on the power management circuit and the level conversion circuit so that the output voltage provided by the power management circuit to the level conversion circuit is reduced to a compensation voltage. When displaying the compensation frame, the level conversion circuit provides an input signal to the gate drive circuit according to the compensation voltage, and the gate drive circuit provides a row start-up voltage to the display panel according to the input signal.

[0035] In a third aspect, the present application provides a display device, comprising a display panel and a display driving circuit;

[0036] The display driving circuit is the display driving circuit as described in the second aspect,

[0037] Alternatively, the display driving circuit is used to execute the display driving method as described in the first aspect.

[0038] The present application provides a display driving method, display driving circuit, and display device, which have at least the following advantages: by obtaining the polarity cumulative value corresponding to the current frame based on the polarity cumulative value corresponding to the previous frame, the display duration of the previous frame, and the polarity of the driving voltage in the previous frame during the display of the current frame, the polarity cumulative result of the driving voltage can be detected in real time, thereby improving the timeliness of polarity detection. When the polarity cumulative value corresponding to the current frame meets the compensation condition, a compensation frame is determined within the current frame based on the polarity of the driving voltage in the current frame and the target polarity. When the compensation frame is displayed, a driving voltage with a polarity opposite to the target polarity is used to drive the display panel. The compensation frame is a display frame located after the current frame, which can avoid the problem of overcompensation. Since the target polarity is the polarity corresponding to the polarity cumulative value of the current frame, compensation can be performed for a frame with a polarity opposite to the target polarity through the compensation frame, reducing the polarity residue of the panel, avoiding polarization of the display panel, reducing screen flicker, and improving display quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application or related technologies. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] Figure 1 This is a schematic diagram of the steps of a display driving method provided by an embodiment of the present application;

[0041] Figure 2 This is one of the signal timing diagrams of a display driving method provided in an embodiment of the present application;

[0042] Figure 3 is a logic diagram of a display driving method provided in an embodiment of the present application;

[0043] Figure 4 It is a waveform diagram of a display driving signal in the related art;

[0044] Figure 5 This is the second signal timing diagram of a display driving method provided by an embodiment of the present application;

[0045] Figure 6 This is a schematic structural diagram of a display driving circuit provided in an embodiment of the present application;

[0046] Figure 7 This is a structural diagram of another display driving circuit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] The following will be combined with the accompanying drawings in some embodiments to clearly and completely describe the technical solutions in some embodiments. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0048] Figure 1 This is a schematic diagram of the steps of a display driving method provided by an embodiment of the present application. Figure 1 As shown, the display driving method includes:

[0049] Step S1, during the display period of the current frame, obtaining the polarity cumulative value corresponding to the current frame according to the polarity cumulative value corresponding to the previous frame, the display duration of the previous frame, and the polarity of the driving voltage in the previous frame;

[0050] Step S2, when the polarity cumulative value corresponding to the current frame meets the compensation condition, determining a compensation frame based on the polarity of the driving voltage in the current frame and the target polarity; wherein the target polarity is the polarity corresponding to the polarity cumulative value of the current frame; and the compensation frame is a display frame located after the current frame;

[0051] Step S3 : when displaying the compensation frame, driving the display panel with a driving voltage having a polarity opposite to the target polarity.

[0052] In some embodiments, the display driving method is used to drive a liquid crystal display (LCD) panel and can be applied to scenarios where the refresh rate varies, such as display devices that support a variable refresh rate range (VRR). VRR refers to a mode in which the display device supports real-time frequency changes during the display process.

[0053] In some embodiments, the driving voltage includes a positive driving voltage and a negative driving voltage. The display panel can generate a positive / negative electric field under the action of the positive / negative driving voltage, causing the liquid crystal molecules to deflect under the action of the electric field. The driving voltage can be a data voltage provided to the LCD panel by a source driver circuit in a display driver circuit.

[0054] The polarity cumulative value represents the cumulative result of the polarity of the positive / negative driving voltage provided to the display panel by the display driving circuit before the current frame. A positive polarity cumulative value indicates that the positive polarity driving voltage lasted longer before the current frame, and a negative polarity cumulative value indicates that the negative polarity driving voltage lasted longer before the current frame.

[0055] Each display frame can use a positive or negative driving voltage, and a display frame generally maintains a driving voltage of the same polarity. The duration of the driving voltage within a display frame is the display duration of the display frame. For example, the display duration can be the total duration of the entire display frame, or the duration of a display phase within a display frame. This embodiment of the present application does not impose any restrictions on this.

[0056] In some embodiments, the polarity and duration of the driving voltage can be detected in real time for each frame, and the polarity cumulative value can be updated based on the polarity and duration of the driving voltage. During the display of the current frame, the sign corresponding to the display duration of the previous frame is determined based on the polarity of the driving voltage in the previous frame, and the polarity cumulative value corresponding to the previous frame is updated based on the signed display duration to obtain the polarity cumulative value corresponding to the current frame.

[0057] Specifically, if the previous frame had a positive driving voltage, the display duration of the previous frame is a positive value; if the previous frame had a negative driving voltage, the display duration of the previous frame is a negative value. The polarity cumulative value obtained from the previous frame detection is then added to the signed display duration detected in the current frame. The sum is the polarity cumulative value corresponding to the current value.

[0058] Among them, if the polarity cumulative value corresponding to the current frame is a positive value, it means that the positive polarity driving voltage before the current frame lasts longer, and if the polarity cumulative value corresponding to the current frame is a negative value, it means that the negative polarity driving voltage before the current frame lasts longer. If the polarity cumulative value is zero, the duration of the positive / negative polarity driving voltage before the current frame is equal.

[0059] Alternatively, the polarity cumulative value may be the difference between the polarity duration of the positive polarity drive voltage and the polarity duration of the negative polarity drive voltage from the start time of the first frame to the end time of the previous frame. If the previous frame was a positive polarity drive voltage, the display duration of the previous frame is added to the polarity cumulative value; if the previous frame was a negative polarity drive voltage, the display duration of the previous frame is subtracted from the polarity cumulative value to obtain the polarity cumulative value corresponding to the current frame.

[0060] In an embodiment of the present application, during the display of the current frame, the polarity accumulation result of the driving voltage is detected in real time based on the polarity accumulation value corresponding to the previous frame, the display duration of the previous frame, and the polarity of the driving voltage in the previous frame, so as to obtain the polarity accumulation value corresponding to the current frame, thereby improving the timeliness of the polarity detection. When the polarity accumulation value corresponding to the current frame meets the compensation condition, the compensation frame is determined in the current frame based on the polarity of the driving voltage in the current frame and the target polarity. When the compensation frame is displayed, the display panel is driven by a driving voltage with a polarity opposite to the target polarity. Since the compensation frame is a display frame located after the current frame, the problem of over-compensation can be avoided. Since the target polarity is the polarity corresponding to the polarity accumulation value of the current frame, the compensation frame can be used to compensate for a frame of opposite polarity, thereby reducing the polarity residue of the panel, avoiding polarization of the display panel, reducing screen flickering, and improving display quality.

[0061] Optionally, step S1 includes the following sub-steps:

[0062] Sub-step A1, obtaining a polarity cumulative value corresponding to a current frame based on the polarity cumulative value corresponding to a previous frame, the level state of the polarity control signal in the previous frame, and the duration of the level state;

[0063] The polarity control signal is used to control the polarity of the driving voltage of the corresponding display frame; the polarity control signal has a first level state and a second level state, the duration of the first level state is positive, and the duration of the second level state is negative.

[0064] In some embodiments, a timing control circuit in a display driver circuit sends a polarity control (POL) signal to a source driver circuit within a display frame, thereby controlling the source driver circuit to provide a positive / negative polarity drive voltage to the display panel within the display frame via the POL signal. A polarity control signal in a first level state is used to control the provision of a positive polarity drive voltage in the corresponding display frame, and a polarity control signal in a second level state is used to control the provision of a negative polarity drive voltage in the corresponding display frame.

[0065] In some embodiments, the first level state is different from the second level state, and the first level state and the second level state are two opposite level states, such as a high level state and a low level state. If the first level state is a high level state, the second level state is a low level state, and vice versa. For example, a high level state of the POL signal indicates that a positive polarity driving voltage needs to be provided, and a low level state of the POL signal indicates that a negative polarity driving voltage needs to be provided. This is merely an example, and the embodiments of the present application are not limited thereto.

[0066] In some embodiments, the duration of the level state corresponding to the polarity control signal can be detected in real time for each frame, and the polarity cumulative value can be updated based on the duration of the level state. During the display of the current frame, the sign corresponding to the duration of the level state is determined based on the level state of the polarity control signal in the previous frame, and the polarity cumulative value corresponding to the previous frame is updated based on the signed duration to obtain the polarity cumulative value corresponding to the current frame.

[0067] Specifically, during the display of the current frame, the duration of the level state corresponding to the polarity control signal in the previous frame can be detected. If the polarity control signal in the previous frame maintains the first level state, the duration is a positive value; if the polarity control signal in the previous frame maintains the second level state, the duration is a negative value. Then, the signed duration is added to the polarity cumulative value corresponding to the previous frame to update the polarity cumulative value. The sum is the polarity cumulative value corresponding to the current frame.

[0068] In the embodiment of the present application, the polarity control signal is used to control the polarity of the drive voltage corresponding to the display frame; the polarity control signal has a first level state and a second level state, the duration of the first level state is a positive value, and the duration of the second level state is a negative value. Thus, within the current frame, the polarity accumulated value can be simply and conveniently updated based on the duration of the polarity control signal level state of the previous frame to obtain the polarity accumulated value corresponding to the current frame, thereby improving the practicality of the display driving method.

[0069] In some embodiments, the polarity accumulated value is detected and updated in real time during the current frame, but compensation is not performed during the current frame. Instead, compensation is performed during the compensation frame by providing a driving voltage with a polarity opposite to the target polarity. Specifically, after updating the polarity accumulated value during the compensation frame, the focus can be on polarity compensation without performing conditional determination. In the frame following the compensation frame, the updated polarity accumulated value is then determined to determine whether it meets the compensation conditions.

[0070] The target polarity is the polarity corresponding to the accumulated polarity value for the current frame. A positive accumulated polarity value indicates positive polarity, while a negative accumulated polarity value indicates negative polarity. The compensation frame is a single display frame. This avoids flickering caused by excessive compensation at once or excessive compensation time. Real-time detection and judgment improves compensation timeliness and optimizes compensation effectiveness.

[0071] Optionally, the following steps are further included before step S2:

[0072] Step S4: if the target cumulative value is greater than the preset cumulative threshold, determining whether the polarity cumulative value corresponding to the current frame meets the compensation condition;

[0073] Step S5 , when the target cumulative value is less than or equal to the cumulative threshold, determining that the polarity cumulative value corresponding to the current frame does not meet the compensation condition; wherein the target cumulative value is the absolute value of the polarity cumulative value corresponding to the current frame.

[0074] In some embodiments, the polarity accumulated value is initialized to zero before the start of this display, and the polarity accumulated value can be updated starting from the second frame based on the display duration of the first frame and the polarity of the driving voltage. In addition, the second frame uses a driving voltage with opposite polarity to the first frame to drive the display panel. Therefore, after the first two frames, there is a problem of panel polarization caused by the different durations of the positive polarity driving voltage and the negative polarity driving voltage, resulting in a driving voltage of a certain polarity lasting too long.

[0075] In some embodiments, whether compensation is needed can be determined starting from the third frame. Based on whether the polarity of the driving voltage in the current frame is consistent with the polarity corresponding to the accumulated polarity value, the next display frame after the current frame is determined to be the compensation frame. This allows for timely compensation for polarization issues that occur two or three frames prior to the current frame, thus reducing screen flicker.

[0076] In some embodiments, a cumulative threshold can be preset to determine whether the polarity cumulative value corresponding to the current frame meets the compensation conditions. The absolute value of the polarity cumulative value corresponding to the current frame can be compared with the preset cumulative threshold. If the absolute value of the polarity cumulative value corresponding to the current frame, i.e., the target cumulative value, is greater than the cumulative threshold, then the polarity cumulative value corresponding to the current frame is determined to meet the compensation conditions. Otherwise, the polarity cumulative value corresponding to the current frame does not meet the compensation conditions, and the detection and determination steps can be repeated for the next frame.

[0077] Optionally, step S1 further includes the following steps:

[0078] Step S6 , when the polarity accumulated value corresponding to the current frame does not meet the compensation condition, when displaying the next frame of the current frame, a driving voltage with a polarity opposite to that of the current frame is used to drive the display panel.

[0079] In some embodiments, for display frames other than the compensation frame, a frame inversion driving method is employed, specifically, alternating between positive polarity and negative polarity driving. If the accumulated polarity value corresponding to the current frame does not meet the compensation conditions, the display panel is driven using a driving voltage of opposite polarity in the next frame, and the next frame detects and determines in real time whether compensation is required.

[0080] In some embodiments, when the compensation frame focuses solely on polarity compensation without performing conditional determination, the next frame after the compensation frame undergoes polarity inversion and repeats the detection and determination steps. Otherwise, only if the accumulated polarity value within the compensation frame fails to meet the compensation conditions is the polarity of the next frame after the compensation frame reversed, i.e., the display panel is driven using a drive voltage with a polarity opposite to that of the compensation frame.

[0081] Optionally, step S2 may include the following sub-steps:

[0082] Sub-step A2, determining the next frame after the target frame as the compensation frame according to the polarity of the driving voltage in the current frame; wherein the target frame is the first display frame starting from the current frame that uses a driving voltage with a polarity opposite to the target polarity.

[0083] In some embodiments, for display frames other than the compensation frame, a frame inversion drive method is used, in which one frame has positive polarity and one frame has negative polarity. Taking the current frame as an example, if the current frame is not a previously determined compensation frame, the current frame uses a drive voltage with a polarity opposite to that of the previous frame.

[0084] In some embodiments, after the current frame determines which display frame the compensation frame is, it takes time to complete the command adjustment action. Therefore, in this embodiment, the display frame after the current frame is used as the compensation frame to ensure successful command adjustment. Polarity compensation can be performed on the display panel when the compensation frame is displayed. The target frame can also be the current frame, depending on whether the polarity of the driving voltage in the current frame is the same as the target polarity.

[0085] If the polarity of the driving voltage in the current frame is the same as the target polarity, due to the frame inversion driving method, the polarity of the next frame after the current frame will be reversed, so the target frame is the first frame after the current frame. If the polarity of the driving voltage in the current frame is different from the target polarity, the target frame is the current frame.

[0086] Optionally, sub-step A2 may include the following steps:

[0087] In a case where the polarity of the driving voltage of the current frame is different from the target polarity, determining the first frame after the current frame as the compensation frame; wherein the target frame is the current frame;

[0088] When the polarity of the driving voltage of the current frame is the same as the target polarity, the second frame after the current frame is determined as the compensation frame; wherein the target frame is the first frame after the current frame.

[0089] In some embodiments, when the polarity of the driving voltage of the current frame is different from the target polarity, the target frame is the current frame, and therefore the first frame after the current frame is determined as the compensation frame, for example, if the current frame is the Nth frame, then the N+1th frame is the compensation frame. When the polarity of the driving voltage of the current frame is the same as the target polarity, the target frame is the first frame after the current frame, and therefore the second frame after the current frame is determined as the compensation frame, for example, if the current frame is the Nth frame, then the N+2th frame is the compensation frame. The target frame uses a driving voltage with a polarity opposite to that of the current frame, and the compensation frame uses a driving voltage with a polarity opposite to that of the target polarity. In this way, the polarity of the driving voltage in both the target frame and the compensation frame is opposite to the target polarity.

[0090] In some embodiments, if the polarity of the driving voltage in the current frame is the same as the polarity corresponding to the accumulated polarity value of the current frame, the second frame after the current frame is determined to be the compensation frame. In this case, starting from the current frame, the polarity of the driving voltage is as follows: the polarity of the current frame is reversed, the polarity of the first frame after the current frame is further reversed, and then the compensation frame, i.e., the second frame after the current frame, uses a driving voltage with a polarity opposite to the target polarity to drive the display panel for polarity compensation.

[0091] Among them, since the polarity of the driving voltage of the current frame is the same as the target polarity, the polarity of the first frame after the current frame is reversed, and the polarity of the driving voltage of the first frame after the current frame is also opposite to the polarity corresponding to the polarity cumulative value of the current frame. Therefore, the two display frames after the current frame are opposite to the target polarity.

[0092] In some embodiments, if the polarity of the driving voltage of the current frame is different from the polarity corresponding to the polarity accumulation value of the current frame, the first frame after the current frame is determined as the compensation frame. In this case, the polarity of the first frame after the current frame is not reversed, that is, the polarity of the driving voltage of the current frame and the next frame is the same, thereby performing polarity compensation on the display panel.

[0093] In an embodiment of the present application, the next frame after the target frame is determined as the compensation frame based on the polarity of the driving voltage in the current frame. The display frame after the current frame can be flexibly determined as the compensation frame based on whether the polarity of the driving voltage of the current frame is the same as the polarity corresponding to the polarity cumulative value of the current frame. This can avoid the problem of insufficient compensation or excessive compensation and make the polarity compensation more accurate and reasonable.

[0094] Figure 2 This is one of the signal timing diagrams of a display driving method provided in an embodiment of the present application. Figure 2The waveforms of the original polarity control (POL) signal and the compensated POL signal in the compensation frame of this embodiment are shown. In the related art, the driving mode of frame inversion, even if the duration of each frame is different, the polarity of the driving voltage of each frame will be reversed, such as Figure 2 The original POL signal shown switches between levels every frame. When the original POL signal is high, the driving voltage is positive, and when it is low, the driving voltage is negative. This switching between positive and negative polarity can easily cause polarization issues on the display panel due to the different durations of the positive and negative frames.

[0095] An embodiment of the present application provides a display driving method in which a polarity cumulative value is updated within a current frame based on the duration of the level state of a polarity control signal in a previous frame. When the absolute value of the updated polarity cumulative value is greater than a cumulative threshold, i.e., when a compensation condition is met, a compensation frame is determined within the current frame based on the polarity of the driving voltage of the current frame and the polarity corresponding to the polarity cumulative value of the current frame. When displaying the compensated frame, the polarity control signal is switched to a target level state, thereby controlling the polarity of the driving voltage of the compensation frame to be opposite to the polarity corresponding to the polarity cumulative value of the current frame, thereby performing polarity compensation on the display panel. The target level state is a level state corresponding to a driving voltage of a polarity opposite to the target polarity.

[0096] like Figure 2 As shown, the Nth frame is judged to exceed the threshold, that is, the absolute value of the polarity cumulative value of the current frame is greater than the cumulative threshold. At this time, the polarity cumulative value is negative (-), and the POL signal of the Nth frame is in a low level state. The polarity of the driving voltage of the Nth frame is the same as the target polarity. The normal polarity of the N+1 frame is reversed, as shown in FIG. Figure 2 As shown, the POL signal is in a high level state. The N+2 frame is a compensation frame, and compensation is performed in the N+2 frame. The POL signal is still in a high level state, and the polarity of the driving voltage in the N+2 frame is the same as that in the N+1 frame.

[0097] like Figure 2 As shown, after the N+2 frame ends, the N+3 frame undergoes a normal polarity reversal, and the POL signal becomes low. The N+3 frame determines that the accumulated polarity value is negative and still exceeds the threshold. Since the polarity of the drive voltage in the N+3 frame is still the same as the target polarity, the next frame, the N+4 frame, undergoes a normal polarity reversal. The N+5 frame is the compensation frame, and after the compensation of the N+5 frame is completed, the POL signal returns to a low state.

[0098] like Figure 2As shown, the Mth frame is determined to have exceeded the threshold. At this time, the polarity cumulative value is positive (+), and the POL signal of the Mth frame is low. The polarity of the drive voltage in the Mth frame is opposite to the target polarity, and the M+1 frame is the compensation frame. Compensation is performed in the M+1th frame, and the POL signal remains low. The polarity of the drive voltage in the M+1th frame is the same as that of the Mth frame. Then, the normal polarity is reversed in the M+2th frame, and real-time detection and judgment of whether compensation is required continue.

[0099] Figure 3 This is a logic diagram of a display driving method provided by an embodiment of the present application. The polarity cumulative value is updated according to the display duration of each frame and the polarity corresponding to the driving voltage. After the first two frames, there may be a problem that the driving voltage of a certain polarity lasts too long. In order to avoid polarization of the display panel, the display panel needs to be polarity compensated. Starting from the third frame (N≥3), real-time detection and judgment on whether compensation is required are performed. Specifically, whether the compensation conditions are met is judged based on whether the absolute value of the polarity cumulative value obtained in the current frame exceeds the cumulative threshold. In this way, the phenomenon that the polarization has already occurred in the first two or three frames in actual applications can be compensated in time to improve screen flicker.

[0100] like Figure 3 As shown, when the target cumulative value is less than or equal to the cumulative threshold, the compensation condition is determined to be not met, the polarity of the driving voltage of the next frame is reversed, and the detection and judgment steps are repeated. When the target cumulative value is greater than the cumulative threshold, the compensation condition is determined to be met, and it is necessary to further determine whether the polarity of the driving voltage of the Nth frame is the same as the target polarity. The target polarity is the polarity corresponding to the polarity cumulative value of the current frame. If the polarity of the driving voltage of the Nth frame is the same as the target polarity, the N+2 frame is the compensation frame, the N+1 frame is normally polarity-reversed, the N+2 frame is not polarity-reversed relative to the N+1 frame, and the polarity of the driving voltage of the N+2 frame is the same as that of the N+1 frame and opposite to the target polarity. Otherwise, the N+1 frame is the compensation frame, the N+1 frame is not polarity-reversed, the polarity of the driving voltage of the N+1 frame is the same as that of the N frame and opposite to the target polarity. Then, the polarity of the N+2 frame is polarity-reversed again, and the detection and judgment steps are repeated.

[0101] In some embodiments, if the current frame is the Nth frame, under the frame inversion driving mode, such as Figure 3 As shown, the polarity of the driving voltage in both the N+1 and N+2 frames has been pre-determined in the Nth frame. Therefore, the polarity determination is not performed in the N+1 frame. In the N+2 frame, the updated polarity cumulative value of the N+2 frame is then determined to see if it meets the compensation conditions. In other words, the polarity determination process is omitted in the N+1 frame and resumed in the N+2 frame. This simplifies the logic determination process, saves program code, and reduces system resource usage.

[0102] Figure 4It is a waveform diagram of a display driving signal in the related art. Figure 4 The waveforms of the POL and GOACLK signals are shown. Due to the change in refresh frequency, the duration of each display frame is different. As shown in the figure, after the four frames ①②③④ are completed, the accumulated polarity will shift, resulting in polarization of the display panel.

[0103] Optionally, after step S3, the following steps are further included:

[0104] Step S7 : When displaying the compensation frame, the row start voltage provided to the display panel is lower than the row start voltage provided during the target frame.

[0105] In some embodiments, if the row turn-on voltage provided to the display panel during the compensation frame is consistent with that of other display frames, since the polarity of the compensation frame is not reversed, that is, the compensation frame has the same driving voltage polarity as the previous frame, the display panel pixels are significantly better charged, which may cause the display panel to be too bright and cause flickering problems.

[0106] In the embodiment of the present application, when displaying a compensation frame, the display panel is driven using a drive voltage with a polarity opposite to the target polarity, and the row turn-on voltage supplied to the display panel is reduced. Specifically, the row turn-on voltage supplied to the display panel during the compensation frame is lower than the row turn-on voltage supplied to the display panel during the target frame, where the target frame is the frame immediately preceding the compensation frame. This reduces the aperture ratio of the thin-film transistors (TFTs) within the display panel, resulting in a weaker charge during the compensation frame than during the previous frame, thus avoiding flicker.

[0107] Figure 5 This is the second signal timing diagram of a display driving method provided by an embodiment of the present application. Figure 5 The figure shows the compensated POL signal, the original GOA CLK signal, the compensated GOA CLK signal, and the panel brightness before and after the GOA CLK signal is compensated. Figure 2 The POL signal waveform of the compensation frame is the same as shown in FIG. Figure 5 As shown, before the GOACLK signal is compensated, the compensation frame has the problem of the panel being too bright. In this embodiment, when compensating the frame, the voltage value of the GOA CLK signal is reduced, thereby reducing the charging effect in the compensation frame, thereby avoiding the problem of the display panel being too bright in the compensation frame.

[0108] The embodiment of the present application further provides a display driving circuit, the display driving circuit including a timing control circuit and a source driving circuit;

[0109] The timing control circuit is electrically connected to the source driver circuit and is configured to, during a display period of a current frame, obtain a polarity cumulative value corresponding to the current frame based on the polarity cumulative value corresponding to the previous frame, the display duration of the previous frame, and the polarity of the driving voltage in the previous frame; determine a compensation frame based on the polarity of the driving voltage in the current frame and a target polarity if the polarity cumulative value corresponding to the current frame meets a compensation condition; and send a first control signal to the source driver circuit when displaying the compensation frame;

[0110] The source driver circuit is configured to provide a driving voltage of corresponding polarity to the display panel in response to a first control signal; wherein the target polarity is the polarity corresponding to the polarity accumulated value of the current frame; the compensation frame is a display frame located after the current frame; the first control signal is a polarity control signal, and the polarity corresponding to the level state of the first control signal is opposite to the target polarity.

[0111] In some embodiments, the timing control circuit may be a timing controller (TCON) or a system on chip (SOC), and the source driver circuit may be a source driver chip (Source IC). The TCON or SOC may receive display signals such as USB, HDMI, and DTV, and output timing signals that can be used to drive a display panel, such as a P2P signal and a clock pulse signal provided to a level shift circuit. The clock pulse signal may be denoted as CK, CPV, or CLKPulse.

[0112] The timing control circuit is electrically connected to the source driver circuit. The timing control circuit can send a polarity control signal to the source driver circuit, causing the source driver circuit to provide a driving voltage of the polarity indicated by the polarity control signal to the display panel. The display panel is an LCD panel, and the driving voltage provided by the source driver circuit includes a positive polarity data voltage and a negative polarity data voltage to drive the deflection of liquid crystal molecules in the LCD panel to display an image.

[0113] In some embodiments, the source driver circuit provides a driving voltage of corresponding polarity to the display panel based on the level of the polarity control signal. Specifically, if the polarity control signal is at a first level, the source driver circuit provides a driving voltage of positive polarity to the display panel in response to the first control signal. If the polarity control signal is at a second level, the source driver circuit provides a driving voltage of negative polarity to the display panel in response to the first control signal.

[0114] In some embodiments, when displaying a compensation frame, the timing control circuit sends a first control signal to the source driver circuit. The polarity corresponding to the first control signal is opposite to the polarity corresponding to the accumulated polarity value of the current frame, i.e., the target polarity. If the target polarity is positive, the first control signal is at the second level; if the target polarity is negative, the first control signal is at the first level.

[0115] In some embodiments, the timing control circuit requires time to complete the command adjustment action and issue the polarity control signal. Therefore, in this embodiment, the display frame after the current frame is used as a compensation frame, and polarity compensation is performed on the display panel within the compensation frame. For example, if the absolute value of the accumulated polarity value is greater than the accumulation threshold in the Nth frame, the compensation condition is met, and the TCON or SOC performs command adjustment in the Nth frame. Most chips cannot prepare for command adjustment in such a short time. Moreover, at high refresh rates, the blank period of each frame is short, so compensation is not performed in the Nth frame.

[0116] Optionally, the timing control circuit is configured as:

[0117] According to the polarity of the driving voltage in the current frame, the next frame after the target frame is determined as the compensation frame; wherein the target frame is the first display frame starting from the current frame that adopts the driving voltage with a polarity opposite to the target polarity.

[0118] Optionally, the timing control circuit is configured as:

[0119] In a case where the polarity of the driving voltage of the current frame is different from the target polarity, determining the first frame after the current frame as the compensation frame; wherein the target frame is the current frame;

[0120] When the polarity of the driving voltage of the current frame is the same as the target polarity, the second frame after the current frame is determined as the compensation frame; wherein the target frame is the first frame after the current frame.

[0121] Optionally, the timing control circuit is configured as:

[0122] When the polarity accumulated value corresponding to the current frame does not meet the compensation condition, a second control signal is sent to the source driving circuit when displaying the next frame of the current frame;

[0123] The source driving circuit is configured to provide a driving voltage of corresponding polarity to the display panel in response to a second control signal; wherein the second control signal is a polarity control signal, and the level state of the second control signal is opposite to the level state of the polarity control signal of the current frame.

[0124] In some embodiments, if the polarity cumulative value corresponding to the current frame does not meet the compensation condition, the polarity of the first frame after the current frame is reversed, that is, the display panel is driven by a drive voltage having a polarity opposite to that of the current frame in the frame following the current frame. The timing control circuit sends a second control signal to the source driver circuit, causing the source driver circuit to provide the display panel with a drive voltage having a polarity corresponding to the level of the second control signal in response to the second control signal.

[0125] If the polarity control signal of the current frame is at the first level, the polarity control signal of the next frame, i.e., the second control signal, is at the second level. The first level and the second level are opposite levels. That is, the level of the second control signal is opposite to the level of the polarity control signal of the current frame, so that the polarity of the first frame after the current frame is reversed, and the second frame after the current frame is then a compensation frame.

[0126] Optionally, the timing control circuit is configured as:

[0127] Obtaining a polarity cumulative value corresponding to a current frame according to the polarity cumulative value corresponding to the previous frame, the level state of the polarity control signal in the previous frame, and the duration of the level state;

[0128] The polarity control signal is used to control the polarity of the driving voltage of the corresponding display frame; the polarity control signal has a first level state and a second level state, the duration of the first level state is positive, and the duration of the second level state is negative.

[0129] In some embodiments, a register in the timing control circuit can store a polarity accumulated value. The polarity accumulated value in the register is initialized to zero before the current display begins. The polarity accumulated value in the register is updated in the current frame directly based on the level and duration of the polarity control signal sent to the source driver circuit in the previous frame. The polarity control signal has a first level and a second level. The duration of the first level is a positive value, and the duration of the second level is a negative value.

[0130] Optionally, the timing control circuit is configured as:

[0131] When the target cumulative value is greater than a preset cumulative threshold, determining that the polarity cumulative value corresponding to the current frame meets the compensation condition;

[0132] When the target cumulative value is less than or equal to the cumulative threshold, it is determined that the polarity cumulative value corresponding to the current frame does not meet the compensation condition; wherein the target cumulative value is the absolute value of the polarity cumulative value corresponding to the current frame.

[0133] In the embodiment of the present application, the implementation of the circuit embodiment can refer to the relevant description in the aforementioned display driving method embodiment, which will not be repeated here.

[0134] Optionally, the display driving circuit further includes a gate driving circuit;

[0135] The timing control circuit is electrically connected to the gate driving circuit and is configured to control the gate driving circuit so that when displaying the compensation frame, the row start voltage provided to the display panel is smaller than the row start voltage provided during the target frame.

[0136] In some embodiments, the gate driver circuit may be a gate driver chip (Gate IC) or a gate driver integrated circuit on an array substrate (Gate On Array, GOA). The timing control circuit controls the gate driver circuit to reduce the voltage value of the row turn-on voltage provided to the display panel within the compensation frame to avoid the problem of the display panel being overbright.

[0137] In some embodiments, the output voltage of the gate drive circuit is provided by a power supply circuit. For example, the GOA circuit outputs a row-on voltage based on a clock (CLK) signal provided by a level shift circuit. The CLK signal received by the GOA circuit is denoted as GOA CLK. The high-level voltage (VGH) of the GOA CLK signal is provided by a power management circuit to the level shift circuit. The level shift circuit can convert the input voltage into a CLK pulse voltage for switching pixels in each row of the display panel. In this embodiment, the row-on voltage within the compensation frame is reduced from the VGH voltage to the VGH-L voltage.

[0138] Optionally, the display driving circuit further includes a power management circuit and a level conversion circuit;

[0139] The timing control circuit is electrically connected to the power management circuit and is configured to control the output voltage provided by the power management circuit to the level conversion circuit to be reduced to a compensation voltage;

[0140] The level conversion circuit is electrically connected to the gate driving circuit and is configured to provide an input signal to the gate driving circuit according to the compensation voltage when displaying the compensation frame, so that the gate driving circuit provides a row start voltage to the display panel according to the input signal.

[0141] In some embodiments, the timing control circuit controls the power management circuit to switch between an uncompensated voltage and a compensated voltage by sending a control instruction to the power management circuit, where the voltage value of the compensated voltage is less than the voltage value of the uncompensated voltage. For example, the TCON or SOC is connected to the power management circuit via an Inter-Integrated Circuit (IIC) bus, and the TCON or SOC can control the power management circuit to switch its output between a VGH voltage and a VGH-L voltage by sending an IIC instruction to the power management circuit. The VGH-L voltage is the compensated voltage, the VGH voltage is the uncompensated voltage, and the VGH-L voltage is less than the VGH voltage.

[0142] In some embodiments, the gate drive circuit is a GOA circuit, which is electrically connected to a level shift circuit. The level shift circuit provides a CLK signal to the GOA circuit based on the voltage output by the power management circuit, as the input signal to the GOA circuit. If the output voltage provided by the power management circuit is an uncompensated voltage, the level shift circuit provides a CLK signal derived from the uncompensated voltage to the GOA circuit, for example, the high level of the CLK signal is VGH. If the output voltage provided by the power management circuit is reduced to a compensated voltage, the level shift circuit provides a CLK signal derived from the compensated voltage to the GOA circuit, for example, the high level of the CLK signal is VGH-L.

[0143] In some embodiments, because the timing control circuit determines whether compensation is required and which compensation frame is required within the current frame, the timing control circuit can send a control instruction to the power management circuit before the compensation frame. For example, the timing control circuit can send a control instruction to the power management circuit within the current frame, causing the power management circuit to provide a compensation voltage to the level shifting circuit during the compensation frame. The timing control circuit can then send a control instruction to the power management circuit during the compensation frame, causing the power management circuit to switch back to a non-compensated voltage output in the frame following the compensation frame.

[0144] In some embodiments, the timing control circuit controls the power management circuit to provide a compensation voltage to the level conversion circuit. When displaying a compensation frame, the level conversion circuit sends an input signal to the gate drive circuit according to the compensation voltage. The input signal is a CLK signal, so that the gate drive circuit provides a row turn-on voltage to the display panel according to the input CLK signal.

[0145] Figure 6 is a structural diagram of a display driving circuit provided in an embodiment of the present application, such as Figure 6 As shown, the TCON or SOC controls the switching between the VGH voltage and the VGH-L voltage by sending an IIC instruction to the power management circuit. The Level Shift circuit then outputs a GOA CLK signal based on the VGH and VGH-L voltages. In the previous frame of the compensation frame, the TCON or SOC sends an IIC instruction to the power management circuit, causing it to switch to outputting the VGH-L voltage during the compensation frame. During this frame, the high level of the CLK signal output by the Level Shift circuit is the compensation voltage VGH-L. Within the compensation frame, the TCON or SOC sends another IIC instruction to the power management circuit, causing it to switch to outputting the VGH voltage during the next frame. After the compensation frame, the high level of the CLK signal output by the Level Shift circuit returns to the non-compensated voltage VGH.

[0146] Optionally, the display driving circuit further includes a power management circuit, a level conversion circuit and a switch circuit;

[0147] The timing control circuit is electrically connected to the switch circuit and is configured to send a switch control signal to the switch circuit;

[0148] The switching circuit is also electrically connected to the power management circuit and the level conversion circuit, respectively, and is configured to, in response to a switching control signal, turn on the power management circuit and the level conversion circuit so that the output voltage provided by the power management circuit to the level conversion circuit is reduced to a compensation voltage. When displaying a compensation frame, the level conversion circuit provides an input signal to the gate drive circuit according to the compensation voltage, and the gate drive circuit provides a row turn-on voltage to the display panel according to the input signal.

[0149] In some embodiments, a switch circuit may be provided between a power management circuit and a level shifting circuit. The power management circuit has two output terminals, one for outputting an uncompensated voltage and the other for outputting a compensated voltage. The input terminal of the switch circuit is electrically connected to the two output terminals of the power management circuit, the output terminal of the switch circuit is electrically connected to the input terminal of the level shifting circuit, and the control terminal of the switch circuit is electrically connected to the timing control circuit. Under the control of the timing control circuit, the switch circuit can switch the voltage path between the power management circuit and the level shifting circuit, causing the power management circuit to switch between outputting an uncompensated voltage and a compensated voltage.

[0150] In some embodiments, the timing control circuit can send a switch control signal to the switch circuit before the compensation frame, causing the switch circuit to connect the compensation voltage output terminal of the power management circuit to the level shifter circuit in response to the switch control signal. In this way, when displaying the compensation frame, the level shifter circuit can provide an input signal to the gate driver circuit based on the compensation voltage provided by the power management circuit. The input signal is a CLK signal. The gate driver circuit then provides a row-on voltage with a compensation value to the display panel based on the input CLK signal.

[0151] Figure 7 is a structural diagram of another display driving circuit provided in an embodiment of the present application, such as Figure 7 As shown, a switch circuit is provided between the power management circuit and the level shift circuit. Its inputs are connected to the VGH and VGH-L outputs of the power management circuit, respectively. Its output is connected to the level shift circuit as the high-level input for the CLK signal. The TCON or SOC is electrically connected to the control terminal of the switch circuit via an IO port. High / low voltage control can be used to control whether the switch circuit conducts the VGH or VGH-L voltage path.

[0152] like Figure 7As shown, in the previous compensation frame, the TCON or SOC sends a high level to the switch circuit through the IO port, which controls the VGH-L voltage path. The level shift circuit inputs the VGH-L voltage, so the high level of the CLK signal generated by the level shift circuit during the compensation frame is the VGH-L voltage. Within the compensation frame, the TCON or SOC sends a low level to the switch circuit through the IO port, and the level shift circuit inputs the VGH voltage. The high level of the CLK signal generated in the next compensation frame returns to the VGH voltage. The TCON or SOC can perform command adjustments during the blank time at the end of the frame to improve control efficiency.

[0153] A display driver circuit provided by an embodiment of the present application uses a timing control circuit to obtain a polarity cumulative value corresponding to the current frame based on the polarity cumulative value corresponding to the previous frame, the display duration of the previous frame, and the polarity of the driving voltage within the previous frame during the display period of the current frame. This allows real-time detection of the polarity cumulative result of the driving voltage, thereby improving the timeliness of polarity detection. The timing control circuit determines whether the polarity cumulative value corresponding to the current frame meets the compensation condition. If the polarity cumulative value corresponding to the current frame meets the compensation condition, the circuit determines a compensation frame based on the polarity of the driving voltage within the current frame and a target polarity. When the compensation frame is displayed, a first control signal is sent to a source driver circuit, which responds to the first control signal to provide a driving voltage of the corresponding polarity to the display panel. Because the compensation frame is displayed after the current frame, overcompensation can be avoided. Because the target polarity is the polarity corresponding to the polarity cumulative value of the current frame, the compensation frame can be used to compensate for a frame with a polarity opposite to the target polarity, thereby reducing panel polarity residue, avoiding display panel polarization, and reducing image flicker and improving display quality.

[0154] An embodiment of the present application further provides a display device, the display device comprising a display panel and a display driving circuit;

[0155] The display driving circuit is the display driving circuit as described in the aforementioned embodiment, or the display driving circuit is used to execute the display driving method as described in the aforementioned embodiment.

[0156] A display device provided in an embodiment of the present application can achieve the same or similar technical effects as the display driving method in the aforementioned embodiment. To avoid repetition, it will not be described here.

[0157] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0158] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0159] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they become aware of the basic inventive concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0160] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0161] The above is a detailed introduction to a display driving method, display driving circuit and display device provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core ideas of the present application. At the same time, for those skilled in the art, according to the ideas of the present application, there may be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. A display driving method, characterized in that: The display driving method includes: During the display of a current frame, a polarity cumulative value corresponding to the current frame is obtained based on the polarity cumulative value corresponding to the previous frame, the display duration of the previous frame, and the polarity of the driving voltage in the previous frame; wherein the polarity cumulative value corresponding to the current frame is a polarity cumulative result of the driving voltage provided to the display panel by the display driving circuit before the current frame; if the duration of the positive polarity driving voltage before the current frame is greater than the duration of the negative polarity driving voltage, the polarity cumulative value corresponding to the current frame is a positive value; if the duration of the negative polarity driving voltage before the current frame is greater than the duration of the positive polarity driving voltage, the polarity cumulative value corresponding to the current frame is a negative value; When the polarity cumulative value corresponding to the current frame meets the compensation condition, a compensation frame is determined according to the polarity of the driving voltage in the current frame and a target polarity; wherein the target polarity is the polarity corresponding to the polarity cumulative value of the current frame; and the compensation frame is a display frame located after the current frame; When displaying the compensation frame, the display panel is driven by a driving voltage having a polarity opposite to the target polarity.

2. The display driving method according to claim 1, wherein: The determining of the compensation frame according to the polarity of the driving voltage in the current frame and the target polarity includes: According to the polarity of the driving voltage in the current frame, a frame subsequent to the target frame is determined as the compensation frame; wherein the target frame is the first display frame starting from the current frame that adopts a driving voltage with a polarity opposite to the target polarity.

3. The display driving method according to claim 2, wherein: The step of determining a subsequent frame of the target frame as the compensation frame according to the polarity of the driving voltage in the current frame includes: In a case where the polarity of the driving voltage of the current frame is different from the target polarity, determining a first frame after the current frame as the compensation frame; wherein the target frame is the current frame; When the polarity of the driving voltage of the current frame is the same as the target polarity, the second frame after the current frame is determined as the compensation frame; wherein the target frame is the first frame after the current frame.

4. The display driving method according to claim 1, wherein: The method further comprises: When the polarity cumulative value corresponding to the current frame does not meet the compensation condition, when displaying the next frame of the current frame, the display panel is driven by a driving voltage with a polarity opposite to that of the current frame.

5. The display driving method according to claim 1, wherein: The step of obtaining the polarity cumulative value corresponding to the current frame according to the polarity cumulative value corresponding to the previous frame, the display duration of the previous frame, and the polarity of the driving voltage in the previous frame includes: Obtaining a polarity cumulative value corresponding to the current frame according to the polarity cumulative value corresponding to the previous frame, a level state of the polarity control signal in the previous frame, and a duration of the level state; The polarity control signal is used to control the polarity of the driving voltage of the corresponding display frame; the polarity control signal has a first level state and a second level state, the duration of the first level state is a positive value, and the duration of the second level state is a negative value.

6. The display driving method according to claim 1, wherein: Before determining the compensation frame according to the polarity of the driving voltage in the current frame and the target polarity, the method further includes: When the target cumulative value is greater than a preset cumulative threshold, determining that the polarity cumulative value corresponding to the current frame meets the compensation condition; When the target cumulative value is less than or equal to the cumulative threshold, it is determined that the polarity cumulative value corresponding to the current frame does not meet the compensation condition; wherein the target cumulative value is the absolute value of the polarity cumulative value corresponding to the current frame.

7. The display driving method according to any one of claims 1 to 6, wherein: The method further comprises: When displaying the compensation frame, the row turn-on voltage provided to the display panel is lower than the row turn-on voltage provided during the target frame.

8. A display driving circuit, characterized in that: The display driving circuit includes a timing control circuit and a source driving circuit; The timing control circuit is electrically connected to the source driver circuit and is configured to, during a display period of a current frame, obtain a polarity cumulative value corresponding to the current frame based on a polarity cumulative value corresponding to a previous frame, a display duration of the previous frame, and a polarity of a driving voltage in the previous frame; and, if the polarity cumulative value corresponding to the current frame meets a compensation condition, determine a compensation frame based on the polarity of the driving voltage in the current frame and a target polarity; and, when displaying the compensation frame, send a first control signal to the source driver circuit; wherein the polarity cumulative value corresponding to the current frame is a polarity cumulative result of the driving voltage provided to the display panel by the display driver circuit before the current frame; if the duration of the positive driving voltage before the current frame is longer than the duration of the negative driving voltage, the polarity cumulative value corresponding to the current frame is a positive value; if the duration of the negative driving voltage before the current frame is longer than the duration of the positive driving voltage, the polarity cumulative value corresponding to the current frame is a negative value; The source driving circuit is configured to provide a driving voltage of corresponding polarity to the display panel in response to the first control signal; wherein the target polarity is the polarity corresponding to the polarity accumulated value of the current frame; the compensation frame is a display frame located after the current frame; the first control signal is a polarity control signal, and the polarity corresponding to the level state of the first control signal is opposite to the target polarity.

9. The display driving circuit according to claim 8, wherein: The display driving circuit further includes a gate driving circuit; The timing control circuit is electrically connected to the gate driving circuit and is configured to control the gate driving circuit so that a row start voltage provided to the display panel when displaying the compensation frame is smaller than a row start voltage provided during the target frame.

10. The display driving circuit according to claim 9, wherein: The display driving circuit further includes a power management circuit and a level conversion circuit; The timing control circuit is electrically connected to the power management circuit and is configured to control the output voltage provided by the power management circuit to the level conversion circuit to be reduced to a compensation voltage; The level conversion circuit is electrically connected to the gate driving circuit and is configured to provide an input signal to the gate driving circuit according to the compensation voltage when displaying the compensation frame, so that the gate driving circuit provides a row start voltage to the display panel according to the input signal.

11. The display driving circuit according to claim 9, wherein: The display driving circuit further includes a power management circuit, a level conversion circuit and a switch circuit; The timing control circuit is electrically connected to the switch circuit and is configured to send a switch control signal to the switch circuit; The switching circuit is also electrically connected to the power management circuit and the level conversion circuit, respectively, and is configured to, in response to the switching control signal, turn on the power management circuit and the level conversion circuit so that the output voltage provided by the power management circuit to the level conversion circuit is reduced to a compensation voltage. When displaying the compensation frame, the level conversion circuit provides an input signal to the gate drive circuit according to the compensation voltage, and the gate drive circuit provides a row start-up voltage to the display panel according to the input signal.

12. A display device, characterized in that: The display device includes a display panel and a display driving circuit; The display driving circuit is a display driving circuit as claimed in any one of claims 8 to 11, Alternatively, the display driving circuit is used to execute the display driving method according to any one of claims 1 to 7.

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