Driving method, driving device and display device of display panel

Abstract

The application discloses a display panel driving method, a driving device and a display device. The display panel comprises a plurality of pixels arranged in an array and a plurality of data lines. Each pixel in the same column is electrically connected with the same data line. The data line is used for providing data signals to each pixel in stages. The driving method comprises the following steps: obtaining voltage differences between data signals provided to each data line in adjacent two stages; determining charging currents of each data line according to each voltage difference; and providing the data signals to the data line with the charging currents. According to the above technical scheme, the charging currents of each data line can be dynamically adjusted according to different frame pictures or different row pixel load conditions, and the problems of power consumption increase and heat increase caused by uniformly increasing the charging currents of each data line in all data signal writing stages in the prior art can be improved.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a driving method, driving device, and display apparatus for a display panel. Background Technology

[0002] In OLED display panels, pixel driving circuits receive data signals and drive connected light-emitting units to emit light based on these signals. Typically, a single data line connects multiple pixel driving circuits. When a data line sequentially writes data signals to different pixel driving circuits, the voltage of the data signal on the line does not switch instantaneously, which can cause display problems. Summary of the Invention

[0003] This invention provides a driving method, driving device, and display equipment for a display panel, in order to improve the display problem caused by voltage switching of data signals on data lines and enhance the display effect.

[0004] According to one aspect of the present invention, a driving method for a display panel is provided. The display panel includes a plurality of pixels arranged in an array and a plurality of data lines; each pixel located in the same column is electrically connected to the same data line; the data lines are used to provide data signals to each pixel in stages; the driving method includes:

[0005] Obtain the voltage difference between the data signals provided to each data line in two adjacent stages;

[0006] Determine the charging current of each data line based on the voltage differences;

[0007] The charging current provides data signals to the data line.

[0008] According to another aspect of the present invention, a driving device for a display panel is provided. The display panel includes a plurality of pixels arranged in an array and a plurality of data lines; each pixel located in the same column is electrically connected to the same data line; the data lines are used to provide data signals to each pixel in stages; the driving device includes:

[0009] The voltage difference acquisition module is used to acquire the voltage difference between the data signals provided to each data line in two adjacent stages;

[0010] The charging current determination module is used to determine the charging current of each data line based on the voltage difference.

[0011] The driver module is used to provide data signals to the data line with charging current.

[0012] According to another aspect of the present invention, a display device is provided, comprising: a display panel and a display driving circuit;

[0013] The display panel includes multiple pixels arranged in an array and multiple data lines; each pixel in the same column is electrically connected to the same data line; the data lines are used to provide data signals to each pixel in stages; the display driving circuit is used to execute the driving method of the display panel described above.

[0014] The technical solution of this invention obtains the voltage difference between the data signals provided to each data line in two adjacent stages. Based on each voltage difference, the charging current of each data line can be determined, enabling the display driving circuit to write data signals to each data line with the charging current determined by each voltage difference. The voltage value of the data signal on the data line can reach the required set value in a shorter time, thereby increasing the time for the data signal to be written to the gate of the driving transistor. When the light-emitting element emits light, the gate voltage of the driving transistor can be equal to the voltage of the data signal, improving the accuracy of the display. In addition, the voltage difference between the data signals provided to each data line in two adjacent stages is dynamically changing in different frames or different rows of pixels. According to the heavy load of different frames or different rows of pixels, the charging current of each data line can be dynamically adjusted, improving the problems of increased power consumption and increased heat generation caused by uniformly increasing the charging current of each data line in all data signal writing stages in the prior art.

[0015] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a top view of a display panel structure in the prior art;

[0018] Figure 2 yes Figure 1 A schematic diagram of the circuit structure of pixels in the display panel;

[0019] Figure 3 yes Figure 2 A schematic diagram of the driving timing of the middle pixel;

[0020] Figure 4 This is a flowchart of a driving method for a display panel provided in an embodiment of the present invention;

[0021] Figure 5This is a schematic diagram of the driving timing of a pixel provided in an embodiment of the present invention;

[0022] Figure 6 This is another driving timing diagram of a pixel provided in an embodiment of the present invention.

[0023] Figure 7 This is a flowchart of another display panel driving method provided in an embodiment of the present invention;

[0024] Figure 8 This is a flowchart of another display panel driving method provided in an embodiment of the present invention;

[0025] Figure 9 This is a flowchart of another display panel driving method provided in an embodiment of the present invention;

[0026] Figure 10 This is a flowchart of another display panel driving method provided in an embodiment of the present invention;

[0027] Figure 11 This is a schematic diagram of the structure of a driving device for a display panel provided in an embodiment of the present invention;

[0028] Figure 12 This is a schematic diagram of the structure of another display panel driving device provided in an embodiment of the present invention;

[0029] Figure 13 This is a schematic diagram of the structure of another display panel driving device provided in an embodiment of the present invention;

[0030] Figure 14 This is a schematic diagram of the structure of another display panel driving device provided in an embodiment of the present invention;

[0031] Figure 15 This is a schematic diagram of the structure of another display panel driving device provided in an embodiment of the present invention;

[0032] Figure 16 This is a schematic diagram of the structure of another display panel driving device provided in an embodiment of the present invention;

[0033] Figure 17 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] Figure 1 This is a top view of a display panel structure in the prior art. The accompanying drawings are for simplification and ease of explanation. Figure 1 Only a portion of the display panel's structure is shown in the image. (Reference) Figure 1 The display area AA of the display panel includes multiple pixels P arranged in an array. The display area AA also includes multiple scan lines SL extending in the row direction and arranged in the parallel direction, multiple light emission control lines EL extending in the row direction and arranged in the parallel direction, and multiple data lines DL extending in the column direction and arranged in the parallel direction. The data lines DL are electrically connected to the display driving circuit (not shown in the figure). Pixels P located in the same row are electrically connected to the same scan line SL(n), which simultaneously provides a scan signal Scan(n) to the pixel P in that row. Pixels P in that row can also be electrically connected to the scan line SL(n-1) of the previous row, and can also receive the scan signal Scan(n-1) from the previous row. Pixels P located in the same row are electrically connected to the same light emission control line EL, which simultaneously provides a light emission control signal Emit to the pixel P in that row. Pixels P located in the same column are electrically connected to the same data line DL, which provides data signals Data to each pixel P in that column in stages.

[0037] It is understood that the display area AA also includes a first power signal line, a second power signal line, a first reset signal line, and a second reset signal line (not shown in the figure). The first power signal line is coupled to the power write transistor M1 of all pixels P to provide the first power signal PVDD. The second power signal line is coupled to the light-emitting element OLED of all pixels P to provide the second power signal PVEE. The light-emitting element OLED is driven by the pixel driving circuit in pixel P, and the light-emitting element OLED includes, but is not limited to, light-emitting devices such as Micro LED and Mini LED. The first reset signal line is coupled to the first reset transistor M5 of all pixels P to provide the first reset signal Vref1. The second reset signal line is coupled to the second reset transistor M7 of all pixels P to provide the second reset signal Vref2. Generally, the first power signal PVDD, the second power signal PVEE, the first reset signal Vref1, and the second reset signal Vref2 are all fixed signals. Of course, in some application scenarios, at least one of the first power signal PVDD, the second power signal PVEE, the first reset signal Vref1, and the second reset signal Vref2 can be set as a variable signal. This embodiment of the present invention will not describe this further.

[0038] Figure 2 yes Figure 1 A schematic diagram of the circuit structure of the pixels in the display panel. Figure 3 yes Figure 2 A schematic diagram of the driving timing for the middle pixel. (Reference) Figure 1 , Figure 2 and Figure 3Pixel P includes a power writing transistor M1, a data writing transistor M2, a driving transistor M3, a compensation transistor M4, a first reset transistor M5, a light-emitting control transistor M6, a second reset transistor M7, and a storage capacitor C. The scan line SL(n-1) of the previous row is coupled to the gate of the first reset transistor M5 of pixel P in the same row. It provides the scan signal Scan(n-1) of the previous row as a reset control signal to the gate of the first reset transistor M5. When the reset control signal is enabled, the gate potential of the driving transistor M3 is reset. The scan line SL(n) of the current row is coupled to the gate of the data writing transistor M2 of pixel P in the same row. It provides the scan signal Scan(n) of the current row as a write control signal to the gate of the data writing transistor M2. When the write control signal is enabled, the data signal Data on the data line DL is written to the gate of the driving transistor M3. The light emission control line EL is coupled to the gate of the power write transistor M1 and the gate of the light emission control transistor M6 of the pixel P located in the same row, and is used to provide the light emission control signal. When the light emission control signal is at the enable level, the circuit in which the light emission element OLED is located is formed, and the current in the light emission element OLED is related to the voltage of the data signal Data.

[0039] Continue to refer to Figure 1 , Figure 2 and Figure 3When the scan signal Scan(n-1) of the previous row is enabled low, during this stage, the gate of the driving transistor M3 of each pixel P in the previous row writes the data signal Data on each data line DL. When the scan signal Scan(n) of the current row is enabled low, during this stage, the gate of the driving transistor M3 of each pixel P in the current row writes the data signal Data on each data line DL. However, when the voltage VS2 of the data signal Data to be written to the pixel P in the current row of the same column differs significantly from the voltage VS1 of the data signal Data to be written to the pixel P in the previous row of the same column, the data signal Data on the data line DL will require a longer time to change from voltage VS1 to voltage VS2. At the moment t1 when pixel P in this row begins writing the data signal Data on the data line DL electrically connected to pixel P into the gate of driving transistor M3, i.e., at the moment t1 when data writing transistor M2 is turned on, the data signal Data has not yet reached a stable state. At the moment t2 when the data signal Data on the data line DL electrically connected to pixel P in this row tends to stabilize, the data writing transistor M2 of pixel P in this row has been turned on for time Δt, reducing the time for the data signal Data to be written into the gate of driving transistor M3. It is highly likely that at the moment t3 when data writing transistor M2 is turned off, the gate of driving transistor M3 will fail to successfully write the data signal Data. As a result, when the light-emitting element OLED emits light, the gate voltage of driving transistor M3 is not equal to the voltage VS2 of the data signal Data, causing inaccurate display problems.

[0040] In existing technologies, a common approach is to uniformly increase the charging current of all data lines DL during all data signal writing stages, thereby shortening the charging time of the data signal Data on the data lines DL and enabling the data signal Data to quickly reach a stable state. However, this leads to increased power consumption and heat generation of the display panel, affecting the lifespan of the display panel and the battery life of the display device.

[0041] To address the aforementioned technical problems, embodiments of the present invention provide a driving method for a display panel. The display panel includes multiple pixels arranged in an array and multiple data lines. Each pixel located in the same column is electrically connected to the same data line. The data lines are used to provide data signals to each pixel in stages. The driving method includes: acquiring the voltage difference between the data signals provided to each data line in two adjacent stages; determining the charging current of each data line based on the voltage difference; and providing data signals to the data lines using the charging current.

[0042] By adopting the above technical solution, the voltage difference between the data signals provided to each data line in two adjacent stages is obtained. Based on each voltage difference, the charging current of each data line can be determined, enabling the display driving circuit to write data signals to each data line with the charging current determined by each voltage difference. The voltage value of the data signal on the data line can reach the required set value in a shorter time, thereby increasing the time for the data signal to be written to the gate of the driving transistor. When the light-emitting element emits light, the gate voltage of the driving transistor can be equal to the voltage of the data signal, improving the accuracy of the display. In addition, the voltage difference between the data signals provided to each data line in two adjacent stages is dynamically changed in different frames or different rows of pixels. According to the heavy load of different frames or different rows of pixels, the charging current of each data line can be dynamically adjusted, improving the problems of increased power consumption and increased heat generation caused by uniformly increasing the charging current of each data line in all data signal writing stages in the prior art.

[0043] The above is the core idea of ​​this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0044] by Figure 1 Taking a display panel as an example, the display panel includes multiple pixels P arranged in an array and multiple data lines DL. Each pixel P located in the same column is electrically connected to the same data line DL. The data line DL is used to provide data signals Data to each pixel P in stages. The driving method for the display panel provided in this embodiment of the invention can drive such... Figure 1 The display panel shown in this embodiment of the invention is similar to that of the prior art, and the differences will not be repeated here.

[0045] It should be noted that, Figure 1 This is merely an exemplary display panel that can be driven by the display panel driving method provided in this embodiment of the invention. The display panel driving method provided in this embodiment of the invention can also drive display panels with other structures, and this embodiment of the invention does not limit this.

[0046] Figure 4 This is a flowchart of a display panel driving method provided in an embodiment of the present invention, see reference. Figure 4 The driving method includes:

[0047] S101. Obtain the voltage difference between the data signals provided to each data line in two adjacent stages.

[0048] In this context, the "stage" in two adjacent stages refers to the stage where the display driver circuit writes the data signal Data to the data line DL. In two adjacent stages, the data signal Data written by the display driver circuit to the data line DL can be the same or different. Generally, the stage where the display driver circuit writes the data signal Data to the data line DL is located after the data writing stage of the previous row of pixels P and before the data writing stage of the current row of pixels P.

[0049] The data signal Data provided to each data line DL refers to the data signal Data that needs to be written to each data line DL during the stage when the display driver circuit writes the data signal Data to each data line DL. It is a set value for the data signal Data on the data line DL. Before the data signal Data is written to the data line DL, the display driver circuit has already determined the voltage value of the data signal Data that needs to be written to each data line DL during this stage.

[0050] Voltage difference refers to the difference in voltage value of the data signal Data that needs to be written on the same data line DL in two adjacent stages.

[0051] For details, please refer to Figure 1 , Figure 2 and Figure 4 Before a frame is displayed, the display driving circuit can acquire the voltage value of the data signal Data that needs to be written to the gate of the driving transistor M3 of each pixel P in the array to enable the display panel to display the frame. That is, the voltage value of the data signal Data that each data line DL needs to write at different stages. Alternatively, before a row of pixels P is displayed, the display driving circuit can acquire the voltage of the data signal Data that needs to be written to the gate of the driving transistor M3 of each pixel P in that row to enable the display panel to display the row of pixels P. That is, the voltage value of the data signal Data that each data line DL needs to write before the data writing stage of the row of pixels P. Therefore, based on the voltage values ​​of the data signals Data that each data line DL needs to write at different stages, the difference in voltage values ​​of the data signals Data that the same data line DL needs to write in two adjacent stages can be calculated; or, based on the voltage values ​​of the data signals Data that each data line DL needs to write before the data writing stage of pixel P in this row, and the voltage values ​​of the data signals Data that each data line DL needs to write before the data writing stage of pixel P in the previous row, the difference in voltage values ​​of the data signals Data that the same data line DL needs to write in the current stage and the previous stage can be calculated.

[0052] S102. Determine the charging current of each data line based on the voltage difference.

[0053] The voltage differences include the voltage difference of the data signal Data that the first data line DL needs to write in two adjacent stages, the voltage difference of the data signal Data that the second data line DL needs to write in two adjacent stages, ..., and the voltage difference of the data signal Data that the last data line DL needs to write in two adjacent stages.

[0054] Charging current refers to the current when the display driver circuit writes the data signal Data to the data line DL. The larger the charging current, the faster the data signal Data on the data line DL changes, until the data signal Data reaches the set value that needs to be written.

[0055] For example, before a frame is displayed, multiple voltage differences between two adjacent stages of each data line DL can be obtained. Based on these voltage differences, it can be determined whether the frame is overloaded, i.e., the voltage variation of the data signal Data that needs to be written to each data line DL in different stages of the frame. When the voltage variation of the data signal Data that needs to be written to each data line DL in the frame is large, the charging current of each data line DL in each stage of the frame can be set to a large value, that is, the charging current when the display driving circuit writes the data signal Data to each data line DL in multiple stages of the frame can be set to a large value; or, only the charging current of the data lines DL with large variation amplitudes can be set to a large value, that is, the charging current when the display driving circuit writes the data signal Data to the data lines DL with large voltage variation amplitudes in multiple stages of the frame can be set to a large value.

[0056] Before a row of pixels P is displayed, the voltage difference between each data line DL in the adjacent two stages before the data writing stage of the current row of pixels P and before the data writing stage of the previous row of pixels P can be obtained. Based on the voltage difference of each data line DL, it can be determined whether the row of pixels P is overloaded, that is, the voltage variation range of the data signal Data that each data line DL in the current row of pixels P needs to write in the current stage and the previous stage can be determined. When the voltage variation range of the data signal Data on each data line DL in the row of pixels P is large, the charging current of each data line DL in the current stage can be set to a large value, that is, the charging current when the display driving circuit writes the data signal Data to each data line DL in the current stage can be set to a large value; or, only the charging current of the data lines DL with large voltage variation ranges can be set to a large value, that is, the charging current when the display driving circuit writes the data signal Data to the data lines DL with large voltage variation ranges in the current stage can be set to a large value.

[0057] S103: Provide data signals to the data line using the charging current.

[0058] Specifically, in different frames or different rows of pixels P, the display driving circuit can write data signals Data to the data lines DL with different charging currents. Then, a row of pixels P can write the data signals Data of each data line DL to the gate of the driving transistor M3. Depending on the load situation of different frames, the display driving circuit can write data signals Data to all or some data lines DL with a larger charging current in multiple stages of one or more heavily loaded frames; or, depending on the load situation of different rows of pixels P, the display driving circuit can write data signals Data to all or some data lines DL with a larger charging current before the data writing stage of one or more heavily loaded rows of pixels P.

[0059] For example, Figure 5 This is a schematic diagram of the driving timing of a pixel provided in an embodiment of the present invention. Figure 6 This is another driving timing diagram of a pixel provided in an embodiment of the present invention. When the voltage VS2 of the data signal Data to be written to pixel P in the same row of the same column is small compared with the voltage VS1 of the data signal Data to be written to pixel P in the previous row of the same column, such as... Figure 5 As shown, the voltage value of the data signal Data to be written on the data line DL changes relatively little, so there is no need to set the charging current to be large. Even if the display driving circuit writes the data signal Data to the data line DL with a small charging current, the data signal Data on the data line DL can change from voltage VS1 to voltage VS2 in a very short time. Before the moment t1 when the pixel P in this row starts writing the data signal Data on the data line DL that is electrically connected to the pixel P in this column to the gate of the driving transistor M3, that is, before the moment t1 when the data writing transistor M2 is turned on, the data signal Data can reach a stable state.

[0060] When the voltage VS2 of the data signal Data that needs to be written to pixel P in the same row of the same column differs significantly from the voltage VS1 of the data signal Data that needs to be written to pixel P in the previous row of the same column, such as Figure 6As shown, the voltage value of the data signal Data to be written on the data line DL varies significantly. Therefore, the charging current can be set larger, allowing the display driving circuit to write the data signal Data to the data line DL with a larger charging current. Even with a large voltage variation, the data signal Data on the data line DL can change from voltage VS1 to voltage VS2 in a very short time. Before the moment t1 when pixel P in this row begins writing the data signal Data from the data line DL electrically connected to pixel P into the gate of the driving transistor M3, i.e., before the moment t1 when the data writing transistor M2 turns on, the data signal Data can reach a stable state. Alternatively, the turn-on time of the data writing transistor M2 of pixel P in this row can be effectively shortened when the data signal Data on the data line DL tends to stabilize, thereby increasing the time for the data signal Data to be written into the gate of the driving transistor M3. This ensures that when the OLED emits light, the gate voltage of the driving transistor M3 is equal to the voltage VS2 of the data signal Data, improving display accuracy.

[0061] In this embodiment of the invention, by obtaining the voltage difference between the data signals provided to each data line in two adjacent stages, the charging current of each data line can be determined based on the voltage difference. This enables the display driving circuit to write data signals to each data line with the charging current determined by the voltage difference. The voltage value of the data signal of the data line can reach the required set value in a shorter time, thereby increasing the time for the data signal to be written to the gate of the driving transistor. When the light-emitting element emits light, the gate voltage of the driving transistor can be equal to the voltage of the data signal, thus improving the accuracy of the display.

[0062] Furthermore, in different frames or different rows of pixels, the voltage difference between the data signals provided to each data line in two adjacent stages is dynamically changing. According to the heavy load of different frames or different rows of pixels, the charging current of each data line can be dynamically adjusted to improve the problems of increased power consumption and increased heat generation caused by uniformly increasing the charging current of each data line in all data signal writing stages in the existing technology.

[0063] Optionally, the charging current of each data line is determined based on the voltage difference, including: obtaining the mapping relationship between the voltage difference on each data line and the charging current of each data line; and determining the charging current of each data line based on the mapping relationship and the voltage difference.

[0064] For example, the mapping relationship between voltage difference ΔV and charging current I can be shown in Table 1. When the absolute value of the voltage difference ΔV between two adjacent stages providing data signals to the data line, |ΔV|, is within the first range of 0 to ΔV1, the charging current of the data line can be determined as I(i) according to the mapping relationship. When the absolute value of the voltage difference ΔV between two adjacent stages providing data signals to the data line, |ΔV|, is within the second range of ΔV1 to ΔV2, the charging current of the data line can be determined as I(i+1) according to the mapping relationship. When the absolute value of the voltage difference ΔV between two adjacent stages providing data signals to the data line, |ΔV|, is within the third range of ΔV2 to ΔV3, the charging current of the data line can be determined as I(i+2) according to the mapping relationship. When the absolute value of the voltage difference ΔV between two adjacent stages provided to the data line, |ΔV|, is located in the range ΔV(j-1) to ΔV(j), the charging current of the data line can be determined as I(i+j-1) according to the mapping relationship. When the absolute value of the voltage difference ΔV between two adjacent stages provided to the data line, |ΔV|, is located in the range ΔV(j) to ΔV(max) of (j+1), the charging current of the data line can be determined as I(i+j) according to the mapping relationship. Here, ΔV(max) is the absolute value of the difference between the set value of the data signal Data corresponding to the maximum gray level of the OLED and the set value of the data signal Data corresponding to the minimum gray level of the OLED.

[0065] Table 1. Mapping relationship between voltage difference ΔV and charging current I

[0066]

[0067] When the absolute value of the voltage difference ΔV between the data signals Data provided to the data lines DL in two adjacent stages, |ΔV|, is within different ranges, the smaller the absolute value of the voltage difference |ΔV|, the smaller the charging current I of the data lines DL; conversely, the larger the absolute value of the voltage difference |ΔV|, the larger the charging current I of the data lines DL. In this way, while increasing the time for the data signal Data to be written to the gate of the driving transistor M3, thus improving display accuracy, the charging current of each data line DL can be adaptively adjusted, reducing the power consumption of the display panel.

[0068] Optionally, when the absolute value of the voltage difference |ΔV| is greater than or equal to the first threshold, the charging current I is greater than or equal to the minimum charging current of the data line DL in the display panel.

[0069] The minimum charging current refers to the charging current of each data line DL when a frame or a row of pixels P is lightly loaded, i.e., when the voltage value of the data signal Data to be written to the data line DL changes little. This is also the charging current of the data lines DL in ordinary display panels before the improvement of the display panel driving method provided in this embodiment of the invention, which was not uniformly increased. In one embodiment, the first threshold is ΔV1, and the minimum charging current of the data line DL is I(i). When the display panel is working, the charging current of all data lines DL at all stages is greater than or equal to I(i). This ensures the normal operation of the display panel and avoids the display driving circuit being unable to effectively write the set value of the data signal Data to the data lines DL if the charging current I of the data lines DL is too small.

[0070] Optionally, a single frame may include multiple stages, namely, stages in which multiple display driving circuits write data signals (Data) to each data line (DL). In each stage, the display driving circuit can simultaneously write data signals (Data) to all data lines (DL). Within a single frame, the display driving circuit needs to write data signals (Data) to all data lines (DL) multiple times.

[0071] In an alternative embodiment, Figure 7 This is a flowchart of another display panel driving method provided in an embodiment of the present invention, see reference. Figure 7 The driving method includes:

[0072] S201. Before displaying the current frame, obtain the voltage difference between the data signals provided to each data line in every two adjacent stages of the current frame.

[0073] Specifically, the current frame includes multiple line scanning stages. In each line scanning stage, the gate of the driving transistor M3 of the pixel P located in the same line will write the data signal Data on each data line DL. Before each line scanning stage, the display driving circuit must write the voltage value of the corresponding data signal Data to each data line DL. Each data line DL includes multiple voltage differences between two adjacent stages.

[0074] S202. The absolute value of the voltage difference on the same data line is determined as the data difference.

[0075] S203. Calculate the average value of the data differences of the same data line in the current frame as the first average value.

[0076] S204. Based on the first average value, determine the charging current when providing data signals to each data line in the current frame.

[0077] Specifically, based on the first average value, the overload status of each data line DL in the current frame can be determined, which means that the voltage value of the data signal Data that needs to be written to each data line DL in the current frame at different stages can be determined.

[0078] In one embodiment, the charging current on each data line DL in the current frame is positively correlated with the first average value of the data line DL. That is, the charging current of each data line DL can be different in the current frame. The larger the first average value of the data line DL, the greater the variation in the voltage value of the data signal Data that needs to be written to the data line DL at different stages in the current frame. Consequently, the charging current of the display driving circuit when writing the data signal Data to the data line DL at multiple stages in the current frame is larger. In this way, the speed at which the display driving circuit writes the data signal Data to the data line DL with a large variation in the voltage value of the data signal Data at multiple stages in the current frame can be accelerated, the writing time of the data signal Data on the data line DL can be shortened, thereby increasing the time for the data signal Data to be written to the gate of the driving transistor M3 and improving the accuracy of displaying one or more columns of images under heavy load.

[0079] S205: Provides data signals to the data line using charging current.

[0080] For example, depending on the load conditions of different data lines DL, the display driving circuit can write data signals Data to the heavily loaded data lines DL with a larger charging current and write data signals Data to the lightly loaded data lines DL with a smaller charging current at multiple stages in the current frame.

[0081] It should be noted that when the display driving circuit writes the data signal Data to the lightly loaded data line DL at multiple stages in the current frame with a small charging current, the charging current should also be greater than or equal to the minimum charging current of the data line DL in the display panel. This is to ensure the normal operation of the display panel and to avoid the display driving circuit being unable to effectively write the set value of the data signal Data to the data line DL if the charging current of the data line DL is too small.

[0082] It is understandable that when the load conditions of each data line DL change in different frames, the charging current of each data line DL can also change accordingly.

[0083] In this embodiment of the invention, before displaying the current frame, the voltage difference between the data signals provided to each data line in every two adjacent stages of the current frame is obtained, and the average value of the absolute values ​​of the voltage differences on the same data line is calculated. This allows the determination of the overload status of each data line in the current frame. Based on the overload status of each data line, the charging current of each data line is adaptively adjusted so that the voltage value of the data signal of each data line can reach the required set value in a shorter time. This increases the time for the data signal of each column of pixels to be written to the gate of the driving transistor, thereby improving the accuracy of the display.

[0084] Furthermore, the load conditions of the data lines may vary in different frames or even within the same frame. The charging current of each data line can be dynamically adjusted to improve the problems of increased power consumption and heat generation caused by uniformly increasing the charging current of each data line during all data signal writing stages in the existing technology.

[0085] In another alternative embodiment, Figure 8 This is a flowchart of another display panel driving method provided in an embodiment of the present invention, see reference. Figure 8 The driving method includes:

[0086] S301. Before displaying the current frame, obtain the voltage difference between the data signals provided to each data line by each of the two adjacent stages of the current frame.

[0087] S302. The absolute value of the voltage difference on the same data line is determined as the data difference.

[0088] S303. Calculate the average value of the data differences of the same data line in the current frame as the first average value.

[0089] S304. Calculate the average of the first average values ​​of each data line in the current frame as the second average value.

[0090] S305. Based on the second average value, determine the charging current when providing data signals to each data line in the current frame.

[0091] Specifically, based on the second average value, the overload situation of the current frame can be determined, that is, the average change of the voltage value of the data signal Data that needs to be written to all data lines DL in the current frame at different stages can be determined.

[0092] In one embodiment, the charging current on each data line DL in the current frame is positively correlated with the second average value. That is, in the current frame, the charging current of each data line DL is the same, and the charging current of each data line DL increases as the second average value increases. This speeds up the writing of data signals Data to all data lines DL in a heavily loaded frame, shortens the writing time of data signals Data on the data lines DL, increases the time for data signals Data to be written to the gate of the driving transistor M3, and improves the display accuracy of that frame.

[0093] S306: Provides data signals to the data line using charging current.

[0094] For example, if the second average value is large, the current frame is heavily loaded, and the display driving circuit can write data signals Data to all data lines DL with a large charging current in multiple stages of the current frame; if the second average value is small, the current frame is lightly loaded, and the display driving circuit can write data signals Data to all data lines DL with a small charging current in multiple stages of the current frame.

[0095] It should be noted that when the display driving circuit writes data signals Data to all data lines DL with a small charging current at multiple stages in the current frame, the charging current should also be greater than or equal to the minimum charging current of the data lines DL in the display panel. This is to ensure the normal operation of the display panel and to avoid the display driving circuit being unable to effectively write the set value of the data signal Data to the data lines DL if the charging current of the data lines DL is too small.

[0096] It is understandable that when the load condition of the current frame changes in different frames, the charging current of all data lines DL can also change accordingly.

[0097] In this embodiment of the invention, before displaying the current frame, the voltage difference between the data signals provided to each data line in every two adjacent stages of the current frame is obtained, and the average value of the absolute values ​​of all voltage differences on all data lines is calculated. This allows the determination of the overload situation of the current frame. Based on the overload situation of the current frame, the charging current of all data lines is adaptively adjusted so that the voltage values ​​of the data signals of all data lines in the current frame can reach the required set value in a shorter time. This increases the time for the pixel data signal to be written to the gate of the driving transistor, improving the accuracy of the display. When the overload situations of different frames are inconsistent, the charging current of all data lines can be dynamically adjusted, improving the problems of increased power consumption and heat generation caused by uniformly increasing the charging current of each data line in all data signal writing stages in the prior art.

[0098] Furthermore, within the same frame, the display driving circuit can provide data signals to all data lines with the same charging current, reducing the computational workload of determining the charging current process when providing data signals to each data line in the current frame, which helps to simplify the driving method of the display panel.

[0099] Optionally, each stage corresponds to refreshing the data signal of one row of pixels, and each stage is a stage in which the display driving circuit writes the data signal Data to each data line DL. After each stage, the data writing transistor M2 of one row of pixels is turned on, and the gate of the driving transistor M3 of that row of pixels writes the data signal Data on each data line DL.

[0100] In an optional embodiment, Figure 9 This is a flowchart of another display panel driving method provided in an embodiment of the present invention, see reference. Figure 9 The driving method includes:

[0101] S401. Before refreshing the data signal of the next row of pixels, obtain the voltage difference between the data signal expected to be provided to each data line in the next stage and the data signal provided to each data line in the current stage.

[0102] The current stage corresponds to refreshing the data signal Data of the current row pixel P, and the next stage corresponds to refreshing the data signal Data of the next row pixel P.

[0103] Specifically, when refreshing the data signal Data of the next row of pixels P, the gate of the driving transistor M3 of the next row of pixels P writes the data signal Data on each data line DL. Before this, the display driving circuit writes the voltage value of the corresponding data signal Data to each data line DL. Before the display driving circuit writes the voltage value of the corresponding data signal Data to each data line DL, it first obtains the voltage difference between the data signal Data that the display driving circuit expects to write to each data line DL in the next stage and the data signal Data that the display driving circuit wants to write to each data line DL in the current stage. Each data line DL includes a voltage difference between two adjacent stages, that is, the difference between the voltage value of the data signal Data that the data line DL needs to write in the current stage and the voltage value of the data signal Data that the data line DL needs to write in the next stage.

[0104] S402. The absolute value of the voltage difference between the data signal expected to be received by each data line in the next stage and the data signal received in the current stage is determined as the data difference.

[0105] S403. Determine the charging current when providing data signals to each data line in the next stage based on the data difference between each data line.

[0106] Specifically, based on the data difference of each data line DL, the overload status of each data line DL in the next row of pixel P can be determined, which in turn determines the voltage change of the data signal Data that each data line DL in the next row of pixel P needs to write in the next stage.

[0107] In one embodiment, in the next stage, the charging current on each data line DL is positively correlated with the data difference of that data line DL. That is, in the next stage, the charging current of each data line DL can be different. The larger the absolute value of the voltage difference between the data signal expected to be received by the data line DL in the next stage and the data signal received in the current stage, the greater the voltage change of the data signal Data that needs to be written to the data line DL in the next stage. Therefore, the charging current of the display driving circuit when writing the data signal Data to the data line DL in the next stage is larger. This speeds up the writing of the data signal Data to the data line DL with a larger voltage change in the data signal Data in the next stage, shortens the writing time of the data signal Data on the data line DL, increases the time for the data signal Data to be written to the gate of the driving transistor M3, and improves the display accuracy of one or more heavily loaded pixels P.

[0108] S404 provides data signals to the data line using charging current.

[0109] For example, based on the voltage variation of the data signal Data that different data lines DL need to write in the next stage, the display driving circuit can write the data signal Data to the data line DL with a larger voltage variation of the data signal Data that needs to be written in the next stage with a larger charging current, and write the data signal Data to the data line DL with a smaller voltage variation of the data signal Data that needs to be written in the next stage with a smaller charging current.

[0110] It should be noted that when the display driver circuit writes the data signal Data to the data line DL, which has a smaller voltage value change amplitude, in the next stage with a smaller charging current, the charging current should also be greater than or equal to the minimum charging current of the data line DL in the display panel. This is to ensure the normal operation of the display panel and to avoid the display driver circuit being unable to effectively write the set value of the data signal Data to the data line DL if the charging current of the data line DL is too small.

[0111] It is understandable that when the voltage value of the data signal Data that each data line DL needs to write changes at different stages, the charging current of each data line DL can also change accordingly.

[0112] In this embodiment of the invention, before refreshing the data signal of the next row of pixels, the voltage difference between the data signal expected to be provided to each data line in the next stage and the data signal provided to each data line in the current stage is obtained. This allows the determination of the voltage change range of the data signal to be written to each data line in the next stage. Based on the voltage change range of each data line in the next stage, the charging current of each data line is adaptively adjusted so that the voltage value of the data signal of each data line can reach the required set value in a shorter time before refreshing the data signal of the next row of pixels. This increases the time for the data signal of each pixel to be written to the gate of the driving transistor, thereby improving the accuracy of the display of the next row of pixels.

[0113] Furthermore, the voltage values ​​of the data signals to be written may vary at different stages. The charging current of each data line can be dynamically adjusted to improve the problems of increased power consumption and heat generation caused by uniformly increasing the charging current of each data line in all data signal writing stages in the existing technology.

[0114] In another alternative embodiment, Figure 10 This is a flowchart of another display panel driving method provided in an embodiment of the present invention, see reference. Figure 10 The driving method includes:

[0115] S501. Before refreshing the data signal of the next row of pixels, obtain the voltage difference between the data signal expected to be provided to each data line in the next stage and the data signal provided to each data line in the current stage.

[0116] S502. The absolute value of the voltage difference between the data signal expected to be received by each data line in the next stage and the data signal received in the current stage is determined as the data difference.

[0117] S503. Calculate the average of the data differences of each data line as the third average.

[0118] S504. Based on the third average value, determine the charging current when providing data signals to each data line in the next stage.

[0119] Specifically, based on the third average value, the overload situation of the next row pixel P can be determined, that is, the average change amplitude of the voltage value of the data signal Data that all data lines DL in the next row pixel P need to write in the next stage can be determined.

[0120] In one embodiment, in the next stage, the charging current on each data line is positively correlated with the third average value. That is, in the next stage, the charging current of each data line DL is the same, and in the next stage, the charging current of each data line DL increases as the third average value increases. This speeds up the process of the display driving circuit writing the data signal Data to all data lines DL before the heavily loaded row pixel P is written with the data signal Data, shortening the data signal Data writing time on the data lines DL. This increases the time for the data signal Data to be written to the gate of the driving transistor M3 of the heavily loaded row pixel P, thereby improving the display accuracy of that row pixel P.

[0121] S505 provides data signals to the data line using charging current.

[0122] For example, if the third average value is large, the next row pixel P is heavily loaded, and the display driving circuit can write the data signal Data to all data lines DL with a larger charging current in the next stage; if the third average value is small, the next row pixel P is lightly loaded, and the display driving circuit can write the data signal Data to all data lines DL with a smaller charging current in the next stage.

[0123] It should be noted that when the display driver circuit writes the data signal Data to all data lines DL with a smaller charging current in the next stage, the charging current should also be greater than or equal to the minimum charging current of the data lines DL in the display panel. This is to ensure the normal operation of the display panel and to avoid the display driver circuit being unable to effectively write the set value of the data signal Data to the data lines DL if the charging current of the data lines DL is too small.

[0124] It is understandable that when the load conditions of pixels P in different rows change, the charging current of all data lines DL can also change accordingly.

[0125] In this embodiment of the invention, before refreshing the data signal of the next row of pixels, the voltage difference between the data signal expected to be provided to each data line in the next stage and the data signal provided to each data line in the current stage is obtained, and the average value of the absolute value of the voltage difference on all data lines is calculated. This allows the determination of the overload situation of the next row of pixels. Based on the overload situation of the next row of pixels, the charging current of all data lines is adaptively adjusted so that the voltage value of the data signal of all data lines can reach the required set value in a short time before refreshing the data signal of the next row of pixels. This increases the time for the data signal of the next row of pixels to be written to the gate of the driving transistor, improving the accuracy of the display of the next row of pixels. When the overload situation of different rows of pixels is inconsistent, the charging current of all data lines in the corresponding stage can be dynamically adjusted, improving the problems of increased power consumption and increased heat generation caused by uniformly increasing the charging current of each data line in all data signal writing stages in the prior art.

[0126] Furthermore, before refreshing the data signals of the same row of pixels, the display driving circuit can provide data signals to all data lines with the same charging current, which reduces the amount of calculation required to determine the charging current process when providing data signals to each data line in the next stage, and helps to simplify the driving method of the display panel.

[0127] Based on the same inventive concept, embodiments of the present invention also provide a driving device for a display panel. Figure 1 Taking a display panel as an example, the display panel includes multiple pixels P arranged in an array and multiple data lines DL. Each pixel P located in the same column is electrically connected to the same data line DL. The data line DL is used to provide data signals Data to each pixel P in stages. The driving device for the display panel provided in this embodiment of the invention can drive such... Figure 1 The display panel shown in this embodiment of the invention is similar to that of the prior art, and the differences will not be repeated here.

[0128] It should be noted that, Figure 1 This is merely an exemplary display panel that can be driven by the display panel driving device provided in this embodiment of the invention. The display panel driving device provided in this embodiment of the invention can also drive display panels with other structures, and this embodiment of the invention does not limit this.

[0129] Figure 11 This is a schematic diagram of the structure of a display panel driving device provided in an embodiment of the present invention, with reference to... Figure 11 The drive unit includes:

[0130] The voltage difference acquisition module 600 is used to acquire the voltage difference between the data signals provided to each data line in two adjacent stages;

[0131] The charging current determination module 700 is used to determine the charging current of each data line based on the voltage difference.

[0132] The driver module 800 is used to provide data signals to the data line with charging current.

[0133] In this embodiment of the invention, by setting a voltage difference acquisition module, the voltage difference between the data signals provided to each data line in two adjacent stages can be acquired. Furthermore, by setting a charging current determination module and a driving module, the charging current of each data line can be determined based on the voltage difference. When the display driving circuit writes a data signal to the data line with the charging current determined by the voltage difference, the voltage value of the data signal on the data line can reach the required set value in a shorter time. This increases the time for the data signal to be written to the gate of the driving transistor, ensuring that when the light-emitting element emits light, the gate voltage of the driving transistor is equal to the voltage of the data signal, thus improving display accuracy.

[0134] Furthermore, in different frames or different rows of pixels, the voltage difference between the data signals provided to each data line in two adjacent stages is dynamically changing. The voltage difference acquisition module can acquire the changing voltage difference in real time, and the charging current determination module can dynamically adjust the charging current of each data line according to the heavy load of different frames or different rows of pixels. This improves the problems of increased power consumption and heat generation caused by uniformly increasing the charging current of each data line in all data signal writing stages in the existing technology.

[0135] Optional, Figure 12 This is a schematic diagram of the structure of another display panel driving device provided in an embodiment of the present invention, with reference to... Figure 12 The charging current determination module 700 includes:

[0136] The mapping relationship acquisition module 701 is used to acquire the mapping relationship between the voltage difference on each data line and the charging current of each data line;

[0137] The charging current determination submodule 702 determines the charging current of each data line based on the mapping relationship and the voltage difference.

[0138] In this way, the display accuracy can be improved by increasing the time it takes for the data signal to be written to the gate of the driving transistor, while the charging current of each data line can be adjusted adaptively to reduce the power consumption of the display panel.

[0139] In one embodiment, when the absolute value of the voltage difference is greater than or equal to a first threshold, the charging current is greater than or equal to the minimum charging current of the data lines in the display panel. This ensures the normal operation of the display panel and prevents the charging current of the data lines from being too low, which would prevent the display driving circuit from effectively writing the set values ​​of the data signals into the data lines.

[0140] Optionally, multiple stages can be included in a single frame. Figure 13 This is a schematic diagram of the structure of another display panel driving device provided in an embodiment of the present invention, with reference to... Figure 13 The voltage difference acquisition module 600 includes:

[0141] The first acquisition module 610 is used to acquire the voltage difference between the data signals provided to each data line in every two adjacent stages of the current frame before displaying the current frame.

[0142] Optional, continue to refer to Figure 13 The charging current determination module 700 includes:

[0143] The first absolute value calculation module 711 is used to determine the absolute value of each voltage difference on the same data line as the data difference.

[0144] The first average value calculation module 712 is used to calculate the average value of the data differences of the same data line in the current frame as the first average value.

[0145] The first charging current determination module 713 is used to determine the charging current when providing data signals to each data line in the current frame based on each first average value.

[0146] In the current frame, the charging current on each data line is positively correlated with the first average value of that data line.

[0147] In this embodiment of the invention, a first acquisition module acquires the voltage difference between the data signals provided to each data line in every two adjacent stages of the current frame before displaying the current frame. A first absolute value calculation module and a first average value calculation module calculate the average of the absolute values ​​of the voltage differences on the same data line. Furthermore, a first charging current determination module determines the overload status of each data line in the current frame. Based on the overload status of each data line, the charging current of each data line is adaptively adjusted, allowing the voltage value of the data signal on each data line to reach the required set value in a shorter time. This increases the time for the data signal of each column of pixels to be written to the gate of the driving transistor, improving display accuracy. Moreover, the overload status of the data lines may differ in different frames or even within the same frame. The first acquisition module can acquire the changing voltage differences, and the first charging current determination module can dynamically adjust the charging current of each data line, improving upon the problems of increased power consumption and heat generation caused by uniformly increasing the charging current of each data line in all data signal writing stages in the prior art.

[0148] Optional, Figure 14 This is a schematic diagram of the structure of another display panel driving device provided in an embodiment of the present invention, with reference to... Figure 14 The charging current determination module 700 includes:

[0149] The second absolute value calculation module 721 is used to determine the absolute value of each voltage difference on the same data line as the data difference.

[0150] The second average value calculation module 722 is used to calculate the average value of the data differences of the same data line in the current frame as the first average value.

[0151] The third average value calculation module 723 is used to calculate the average of the first average value of each data line in the current frame as the second average value;

[0152] The second charging current determination module 724 is used to determine the charging current when providing data signals to each data line in the current frame based on each second average value.

[0153] In the current frame, the charging current on each data line is positively correlated with the second average value.

[0154] In this embodiment of the invention, by setting a second absolute value calculation module, a second average value calculation module, and a third average value calculation module, the average value of the absolute values ​​of all voltage differences on all data lines is calculated. Furthermore, by setting a second charging current determination module, the overload situation of the current frame can be determined. Based on the overload situation of the current frame, the charging current of all data lines is adaptively adjusted, ensuring that the voltage values ​​of the data signals of all data lines in the current frame can reach the required set values ​​in a shorter time. This increases the time for the pixel data signal to be written to the gate of the driving transistor, improving display accuracy. When the overload situations of different frames are inconsistent, the first acquisition module can acquire the changing voltage differences, and the second charging current determination module can dynamically adjust the charging current of each data line. This improves upon the problems of increased power consumption and heat generation caused by uniformly increasing the charging current of each data line during all data signal writing stages in the prior art. Moreover, in the same frame, the display driving circuit can provide data signals to all data lines with the same charging current, reducing the computational workload of the second charging current determination module in determining the charging current process when providing data signals to each data line in the current frame. This simplifies the driving device of the display panel and reduces the power consumption of the driving device.

[0155] Optionally, each stage corresponds to refreshing one row of pixel data signals. Figure 15 This is a schematic diagram of the structure of another display panel driving device provided in an embodiment of the present invention, with reference to... Figure 15 The voltage difference acquisition module 600 includes:

[0156] The second acquisition module 620 is used to acquire the voltage difference between the data signal expected to be provided to each data line in the next stage and the data signal provided to each data line in the current stage before refreshing the data signal of the next row of pixels.

[0157] Optional, continue to refer to Figure 15 The charging current determination module 700 includes:

[0158] The third absolute value calculation module 731 is used to determine the absolute value of the voltage difference between the data signal expected to be received by each data line in the next stage and the data signal received in the current stage as the data difference.

[0159] The third charging current determination module 732 is used to determine the charging current when providing data signals to each data line in the next stage based on the data difference between each data line.

[0160] In the next stage, the charging current on each data line is positively correlated with the data difference of that data line.

[0161] In this embodiment of the invention, a second acquisition module is provided to acquire the voltage difference between the data signal expected to be provided to each data line in the next stage and the data signal provided to each data line in the current stage before refreshing the data signal of the next row of pixels. A third absolute value calculation module is provided to determine the magnitude of the voltage change of the data signal to be written to each data line in the next stage. Furthermore, a third charging current determination module is provided to adaptively adjust the charging current of each data line according to the magnitude of the voltage change in the next stage. This ensures that the voltage value of the data signal of each data line reaches the required set value in a shorter time before refreshing the data signal of the next row of pixels, increasing the time for the data signal of each pixel to be written to the gate of the driving transistor and improving the accuracy of the next row of pixels display. In addition, the magnitude of the voltage change of the data signal to be written may differ in different stages. The second acquisition module can acquire the changing voltage difference, and the third charging current determination module can dynamically adjust the charging current of each data line, improving the problems of increased power consumption and heat generation caused by uniformly increasing the charging current of each data line in all data signal writing stages in the prior art.

[0162] Optional, Figure 16 This is a schematic diagram of the structure of another display panel driving device provided in an embodiment of the present invention, with reference to... Figure 16 The charging current determination module 700 includes:

[0163] The fourth absolute value calculation module 741 is used to determine the absolute value of the voltage difference between the data signal expected to be received by each data line in the next stage and the data signal received in the current stage as the data difference.

[0164] The fourth average value calculation module 742 is used to calculate the average value of the data differences of each data line as the third average value;

[0165] The fourth charging current determination module 743 is used to determine the charging current when providing data signals to each data line in the next stage based on the third average value.

[0166] In the next stage, the charging current on each data line is positively correlated with the third average value.

[0167] In this embodiment of the invention, by setting a fourth absolute value calculation module and a fourth average value calculation module, the average value of the absolute values ​​of the voltage differences on all data lines is calculated. Furthermore, by setting a fourth charging current determination module, the overload status of the next row of pixels can be determined. Based on the overload status of the next row of pixels, the charging current of all data lines is adaptively adjusted, ensuring that the voltage values ​​of the data signals on all data lines reach the required set values ​​within a short time before refreshing the data signals of the next row of pixels. This increases the time for the data signals of the next row of pixels to be written to the gate of the driving transistor, improving the accuracy of the next row of pixel display. When the overload status of pixels in different rows is inconsistent, the second acquisition module can acquire the changing voltage differences, and the fourth charging current determination module can dynamically adjust the charging current of each data line. This improves upon the problems of increased power consumption and heat generation caused by uniformly increasing the charging current of each data line during all data signal writing stages in the prior art. Moreover, before refreshing the data signals of the same row of pixels, the display driving circuit can provide data signals to all data lines with the same charging current, reducing the computational workload of the fourth charging current determination module in determining the charging current for providing data signals to each data line in the next stage. This simplifies the driving device of the display panel and reduces power consumption.

[0168] Based on the same inventive concept, embodiments of the present invention also provide a display device. Figure 17 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention, such as... Figure 17 The display device includes a display panel 10 and a display driving circuit 20. The display panel 10 includes multiple pixels P arranged in an array and multiple data lines DL. Each pixel P located in the same column is electrically connected to the same data line DL. The data lines DL are used to provide data signals to each pixel P in stages. The display driving circuit 10 is used to execute the driving method of the display panel provided in any embodiment of the present invention. The display device provided in the embodiments of the present invention can be... Figure 17 The mobile phone shown can also be any electronic product with display function, including but not limited to the following categories: television, laptop, desktop monitor, tablet computer, digital camera, smart bracelet, smart glasses, in-vehicle display, medical equipment, industrial control equipment, touch interactive terminal, etc. The embodiments of the present invention do not make any special limitations on this.

[0169] The display driving circuit of the display device provided in the embodiments of the present invention can execute the driving method of the display panel provided in any embodiment of the present invention to drive the display panel of the display device provided in the embodiments of the present invention. For the contents not described in detail in the embodiments of the display device, please refer to the above description of the driving method of the display panel, and will not be repeated here.

[0170] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A driving method for a display panel, characterized in that, The display panel includes multiple pixels arranged in an array and multiple data lines; each pixel located in the same column is electrically connected to the same data line; The data line is used to provide data signals to each pixel in stages; A single frame includes multiple stages; the driving method includes: Before displaying the current frame, the voltage difference between the data signals provided to each of the data lines in every two adjacent stages of the current frame is obtained; The absolute value of each voltage difference on the same data line is determined as the data difference. Calculate the average of the data differences along the same data line in the current frame, and use it as the first average. Based on the first average values, determine the charging current when providing the data signal to each of the data lines in the current frame, wherein the charging current of the same data line in the current frame is the same; or, calculate the average of the first average values ​​of each of the data lines in the current frame as the second average value, and determine the charging current when providing the data signal to each of the data lines in the current frame based on the second average values, wherein the charging current of all the data lines in the current frame is the same. The charging current is used to provide a data signal to the data line.

2. The driving method for the display panel according to claim 1, characterized in that, The driving method further includes: Obtain the mapping relationship between the voltage difference on each of the data lines and the charging current of each of the data lines; Based on the mapping relationship and the voltage differences, the charging current of each data line is determined.

3. The driving method for the display panel according to claim 2, characterized in that, When the absolute value of the voltage difference is greater than or equal to the first threshold, the charging current is greater than or equal to the minimum charging current of the data line in the display panel.

4. The driving method for a display panel according to claim 1, characterized in that, The charging current on each of the data lines in the current frame is positively correlated with the first average value of the data line.

5. The driving method for a display panel according to claim 1, characterized in that, The charging current on each of the data lines in the current frame is positively correlated with the second average value.

6. A driving device for a display panel, characterized in that, The display panel includes multiple pixels arranged in an array and multiple data lines; each pixel located in the same column is electrically connected to the same data line; The data line is used to provide data signals to each pixel in stages; A single frame includes multiple stages; the driving device includes: The voltage difference acquisition module is used to acquire the voltage difference between the data signals provided to each of the data lines in every two adjacent stages of the current frame before displaying the current frame. A charging current determination module is used to determine the absolute value of each voltage difference on the same data line as a data difference; calculate the average value of each data difference on the same data line in the current frame as a first average value; determine the charging current when providing the data signal to each data line in the current frame based on each of the first average values, wherein the charging current of the same data line in the current frame is the same; or, calculate the average value of the first average values ​​of each data line in the current frame as a second average value, and determine the charging current when providing the data signal to each data line in the current frame based on each of the second average values, wherein the charging current of all data lines in the current frame is the same; A driving module is used to provide data signals to the data line with the charging current.

7. A display device, characterized in that, include: Display panel and display driving circuit; The display panel includes multiple pixels arranged in an array and multiple data lines; each pixel in the same column is electrically connected to the same data line; the data line is used to provide data signals to each pixel in stages; the display driving circuit is used to execute the driving method of the display panel according to any one of claims 1-5.

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