Display panel and its driving method

Abstract

This invention discloses a display panel and its driving method. The driving method for the display panel includes: determining driving data for each sub-pixel under each display mode based on the display mode of the display panel, the emission color of the sub-pixel, and a pre-stored correspondence, wherein the driving data includes a power supply voltage; and providing corresponding driving data to the sub-pixel; wherein the correspondence includes the correspondence between the display mode, the emission color of the sub-pixel, and the driving data. The technical solution of this invention reduces the power consumption of the display panel.

Description

Technical Field

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

[0002] With the continuous development of display technology, the display functions of display panels are becoming increasingly rich.

[0003] However, the rich display functions of the display panel require high refresh rate, high brightness and high PPI (Pixels Per Inch), which increases the power consumption of the display panel and makes it impossible for the display panel to standby for a long time. Summary of the Invention

[0004] This invention provides a display panel and its driving method to solve the problem of high power consumption in display panels.

[0005] According to one aspect of the present invention, a driving method for a display panel is provided, the driving method for the display panel comprising:

[0006] Based on the display mode of the display panel, the emission color of the sub-pixel, and the pre-stored correspondence, determine the driving data of the sub-pixel in each display mode, wherein the driving data includes the power supply voltage;

[0007] Provide the corresponding driving data to the sub-pixel;

[0008] The correspondence includes the correspondence between the display mode, the emission color of the sub-pixel, and the driving data.

[0009] Optionally, the correspondence includes a first correspondence, which includes the correspondence between the display mode, the emission color of the sub-pixel, and the power supply voltage;

[0010] Preferably, the first correspondence includes the correspondence between the display mode, the emission color of the sub-pixel, and the cathode power supply voltage connected to the sub-pixel.

[0011] Optionally, the driving data includes a driving voltage for driving the sub-pixel to emit light; the correspondence includes a second correspondence, which includes the correspondence between the display mode, display grayscale, the emission color of the sub-pixel and the driving voltage;

[0012] Based on the display mode of the display panel, the emission color of the sub-pixels, and the pre-stored correspondence, the driving data of the sub-pixels in each display mode is determined, including:

[0013] The driving voltage corresponding to the sub-pixel is determined based on the display mode, grayscale, emission color of the sub-pixel, and the pre-stored second correspondence of the display panel.

[0014] Providing the corresponding driving data to the sub-pixel includes:

[0015] The corresponding driving voltage is provided to the sub-pixel.

[0016] Optionally, before determining the driving data of the sub-pixel in each display mode based on the display mode of the display panel, the emission color of the sub-pixel, and the pre-stored correspondence, the method further includes:

[0017] For a sub-pixel with a set emission color, gamma adjustment is performed on the sub-pixel using different preset power supply voltages according to a preset display mode and a preset grayscale. By using the optical parameters of the sub-pixel at the target position and the difference in optical parameters between the sub-pixel at the set position and the sub-pixel at the target position, the driving data of the sub-pixel in the preset display mode is determined, and the corresponding relationship is obtained.

[0018] Wherein, the sub-pixel for setting the emission color includes any emission color sub-pixel; the optical parameters include at least brightness and color coordinates;

[0019] Store the correspondence.

[0020] Optionally, determining the driving data of the sub-pixel in the preset display mode and obtaining the correspondence includes:

[0021] Under the preset display mode and preset grayscale, the power supply voltage is provided to the sub-pixels of the same luminous color according to the preset power supply voltage;

[0022] The display state of the sub-pixel is adjusted by gamma until the first current optical parameter of the sub-pixel at the target position is consistent with the target optical parameter;

[0023] Detect the second current optical parameter of at least one sub-pixel at the set position under the preset display mode and the preset grayscale;

[0024] Update the preset power supply voltage according to the step value, and return to execute the step of providing power supply voltage to sub-pixels of the same luminous color according to the preset power supply voltage until the preset power supply voltage reaches the voltage threshold.

[0025] The power supply voltage corresponding to the preset display mode and the emission color of the sub-pixel is determined based on the differences between all the second current optical parameters and the corresponding first current optical parameters;

[0026] Preferably, the target position is the center position of the display panel;

[0027] Preferably, the preset grayscale is the maximum grayscale.

[0028] Optionally, before performing gamma adjustment on the display state of the sub-pixel until the first current optical parameter of the target position sub-pixel matches the target optical parameter, the method further includes:

[0029] The overall optical parameters of a pixel unit are obtained when the display panel displays a white image under a preset display mode and preset grayscale; wherein, the pixel unit includes a sub-pixel of at least one luminous color;

[0030] The target optical parameters corresponding to each sub-pixel of a certain luminous color are determined based on the overall optical parameters.

[0031] Optionally, determining the power supply voltage corresponding to the preset display mode and the emission color of the sub-pixel based on the differences between all the second current optical parameters and the corresponding first current optical parameters includes:

[0032] Under the preset display mode and the preset grayscale, calculate the difference values ​​between all the second current optical parameters and the corresponding first current optical parameters;

[0033] The preset power supply voltage when the difference value is less than a first preset threshold and the absolute value of the corresponding preset power supply voltage is less than a second preset threshold is taken as the power supply voltage of the sub-pixel.

[0034] Optionally, determining the power supply voltage corresponding to the preset display mode and the emission color of the sub-pixel includes:

[0035] The target power supply voltage is a preset power supply voltage that satisfies the following conditions: the difference between the second current optical parameter and the corresponding first current optical parameter is less than a first preset threshold, the absolute value of the preset power supply voltage is less than a second preset threshold, and the brightness change of the sub-pixel within a preset time period is less than a third preset threshold.

[0036] If there are multiple target power supply voltages, the target power supply voltage with the smallest absolute value shall be used as the power supply voltage of the sub-pixel.

[0037] Optionally, before determining the driving data of the sub-pixel in each display mode based on the display mode of the display panel, the emission color of the sub-pixel, and the pre-stored correspondence, the method further includes:

[0038] Determine the preset display mode and the power supply voltage under the preset grayscale;

[0039] The power supply voltage is used to perform gamma adjustment on the sub-pixel under different display gray levels to obtain the correspondence between the display mode, display gray level, the emission color of the sub-pixel and the driving voltage.

[0040] According to another aspect of the present invention, a display panel is provided, which is driven by the driving method of the display panel described in any embodiment of the present invention.

[0041] The technical solution of this invention determines the driving data corresponding to the sub-pixels in each display mode based on the display mode of the display panel, the emission color of the sub-pixels, and a pre-stored correspondence. Furthermore, in at least one display mode, the power supply voltages corresponding to sub-pixels with different emission colors are not entirely the same. Thus, different power supply voltages are provided for different display modes and sub-pixel emission colors. Specifically, different power supply voltages are provided for the different operating voltages required by the light-emitting devices in sub-pixels with different display modes and emission colors. This allows for providing a larger absolute value of power supply voltage to sub-pixels requiring a higher operating voltage and a smaller absolute value of power supply voltage to sub-pixels requiring a lower operating voltage, thereby avoiding power loss, reducing the power consumption of the display panel, and increasing the standby time of the display panel.

[0042] 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

[0043] 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.

[0044] Figure 1 This is a flowchart of a driving method for a display panel provided in an embodiment of the present invention;

[0045] Figure 2 This is a schematic diagram of a pixel circuit provided in an embodiment of the present invention;

[0046] Figure 3 This is a flowchart of another display panel driving method provided in an embodiment of the present invention;

[0047] Figure 4 This is a flowchart of another display panel driving method provided in an embodiment of the present invention;

[0048] Figure 5 This is a flowchart of a power supply voltage determination method provided in an embodiment of the present invention;

[0049] Figure 6This is a graph showing the absolute value of the power supply voltage changing with the display mode, provided by an embodiment of the present invention.

[0050] Figure 7 This is a flowchart of another power supply voltage determination method provided in an embodiment of the present invention;

[0051] Figure 8 This is a flowchart of another power supply voltage determination method provided in an embodiment of the present invention;

[0052] Figure 9 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention. Detailed Implementation

[0053] 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.

[0054] 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.

[0055] As mentioned in the background section, display panels suffer from high power consumption and short standby time. The inventors discovered that this problem arises because display panels tend towards high PPI, high refresh rates, and high brightness. High brightness requires more current, leading to higher power consumption; high PPI displays have a larger number of pixels per unit size, resulting in higher power consumption; and high refresh rates require a higher frequency of data writing voltage, also leading to higher power consumption. All these factors contribute to the high power consumption of display panels and their inability to maintain a long standby time. Display panels include pixel circuits, which can be 7T1C pixel circuits and their extension circuits, or 2T1C pixel circuits and their extension circuits. To overcome the short standby time issue, most display panels use Low Temperature Poly-oxide (LTPO) technology to form the pixel circuits. This means that at least some transistors in the pixel circuit use Indium Gallium Zinc Oxide (IGZO) transistors. IGZO transistors have lower leakage current, reducing current loss in the pixel circuit and thus lowering the power consumption of the display panel. At low refresh rates, most power loss in display panels is due to leakage current, and LTPO technology can reduce power consumption. However, at high refresh rates, the main reason for high power consumption in display panels is not leakage current of transistors, so LTPO technology cannot solve the problem of high power consumption in display panels with high PPI, high refresh rate, and high brightness.

[0056] To address the aforementioned technical problems, this embodiment provides a method for driving a display panel. Figure 1 This is a flowchart of a display panel driving method provided in an embodiment of the present invention, see reference. Figure 1 The driving methods for the display panel include:

[0057] S110. Based on the display mode of the display panel, the emission color of the sub-pixel, and the pre-stored correspondence, determine the driving data of the sub-pixel in each display mode. The driving data includes the power supply voltage. Different display modes have different maximum brightness values. The correspondence includes the correspondence between the display mode, the emission color of the sub-pixel, and the driving data. In at least one display mode, the power supply voltages corresponding to sub-pixels with different emission colors are not completely the same.

[0058] The display panel includes multiple pixel units, each comprising a sub-pixel of at least one luminous color, such as red, green, and blue sub-pixels. The display panel includes multiple display modes, such as High Dynamic Range (HDR) mode, High Brightness Mode (HBM) mode, and multiple Normal modes. Normal modes are further divided into Normal1-Normal8, each with a different maximum brightness value at the same grayscale level. HDR, HBM, and Normal modes can be selected and set, with different maximum brightness values ​​corresponding to different display modes, such as 2 nits, 30 nits, 600 nits, 1100 nits, or 2000 nits. The driving data includes power supply voltage and may also include driving voltage, which is the voltage supplied by the pixel circuit to the anode of the sub-pixel. The driving voltage generated by the pixel circuit is determined, for example, based on the data voltage and / or pulse width modulation voltage.

[0059] Specifically, the display panel stores the correspondence between display modes, the emission colors of sub-pixels, and driving data. This correspondence is stored, for example, in the form of a table or graph. When driving a sub-pixel to emit light, by obtaining the current display mode of the display panel and the emission color of the driven sub-pixel, and substituting the display mode and emission color of the display panel into the correspondence, the driving data corresponding to the display mode and the emission color of the sub-pixel can be determined.

[0060] Specifically, sub-pixels of different emission colors can be light-emitting devices of different emission colors. Under the same display mode and grayscale, the operating voltage (voltage difference across the light-emitting device) required for different emission colors to emit light varies. If the power supply voltage corresponding to sub-pixels of different emission colors is the same, all sub-pixels would need to provide a larger absolute value of power supply voltage to meet the needs of sub-pixels requiring a higher operating voltage, resulting in significant power loss. Therefore, by setting the power supply voltage corresponding to sub-pixels of different emission colors to be different in at least one display mode, a larger absolute value of power supply voltage can be provided to sub-pixels requiring a higher operating voltage, and a smaller absolute value of power supply voltage can be provided to sub-pixels requiring a lower operating voltage. This avoids power loss, reduces the power consumption of the display panel, and increases the standby time of the display panel. Furthermore, the driving data corresponding to different display modes is not completely the same, meaning the power supply voltage corresponding to different display modes is not completely the same. This results in a smaller absolute value of the power supply voltage corresponding to the display mode with the smaller maximum brightness value, further reducing the power consumption of the display panel.

[0061] S120, provides corresponding driving data to the sub-pixels.

[0062] In this system, sub-pixels emit light through pixel circuitry. Driving a sub-pixel requires providing data voltage and / or pulse width modulation voltage to the pixel circuitry and supplying power voltage to the light-emitting device, causing the device to emit light in response to the driving current. For example, Figure 2 This is a schematic diagram of a pixel circuit provided in an embodiment of the present invention, such as... Figure 2 As shown, the pixel circuit includes a driving transistor T1, a threshold compensation transistor T2, a data writing transistor T3, a first initialization transistor T4, a second initialization transistor T5, a first light-emitting control transistor T6, a second light-emitting control transistor T7, and a storage capacitor C1. The first initialization transistor T4 is connected between the initialization signal Vref and the control terminal of the driving transistor T1, and the second initialization transistor T5 is connected between the initialization signal Vref and the anode of the light-emitting device D1. The control terminals of the first initialization transistor T4 and the second initialization transistor T5 are connected to the first scan signal S1. The control terminals of the threshold compensation transistor T2 and the data writing transistor T3 are connected to the second scan signal S2.

[0063] By providing a data voltage Data to the data writing transistor T3, the data writing transistor T3 writes the data voltage Data to the control terminal of the driving transistor T1 through the threshold compensation transistor T2, thereby controlling the magnitude of the driving current generated by the driving transistor T1, and thus controlling the brightness of the light-emitting device D1. By providing a pulse width modulation voltage EM to the first light-emitting control transistor T6 and the second light-emitting control transistor T7, the conduction sequence of the first light-emitting control transistor T6 and the second light-emitting control transistor T7 is controlled, thereby controlling the duration of the driving current generated by the driving transistor T1, and thus controlling the brightness of the light-emitting device D1. Therefore, by controlling the data voltage and / or pulse width modulation voltage provided to the pixel circuit, the driving current generated by the pixel circuit can be controlled, thereby controlling the brightness of the light-emitting device.

[0064] Specifically, by determining the corresponding power supply voltage and driving voltage based on the display mode and the emission color of the sub-pixels, a larger absolute value of power supply voltage can be provided to sub-pixels requiring a higher operating voltage, while a smaller absolute value of power supply voltage can be provided to sub-pixels requiring a lower operating voltage. This avoids power loss, helps reduce the power consumption of the display panel, and increases its standby time. Furthermore, at the same grayscale, different display modes require slightly different driving voltages, and different emission colors at the same grayscale also require slightly different driving voltages. This allows for providing corresponding driving voltages to sub-pixels based on different display modes and emission colors, enabling the sub-pixels to better display the required brightness and improving the display effect of the display panel.

[0065] In summary, depending on the display mode of the display panel, the operating voltage required by sub-pixels is not entirely the same at the same grayscale level. Furthermore, the operating voltage required by sub-pixels varies depending on their emission color. The technical solution of this embodiment determines the driving data corresponding to the sub-pixels in each display mode based on the display mode of the display panel, the emission color of the sub-pixels, and a pre-stored correspondence. At least in one display mode, the power supply voltage corresponding to sub-pixels with different emission colors is not entirely the same. Thus, by providing different power supply voltages for different display modes and sub-pixel emission colors—that is, providing different power supply voltages for the different operating voltages required by the light-emitting devices in sub-pixels with different display modes and emission colors—a larger absolute value of power supply voltage can be provided to sub-pixels requiring a higher operating voltage, and a smaller absolute value of power supply voltage can be provided to sub-pixels requiring a lower operating voltage. This avoids power loss, helps reduce the power consumption of the display panel, and increases the standby time of the display panel.

[0066] Based on the above technical solution, optionally, the correspondence relationship includes a first correspondence relationship, which includes the correspondence between display mode, the luminous color of sub-pixels and power supply voltage.

[0067] Specifically, the power supply voltage corresponding to the sub-pixel can be determined through the first correspondence, so that different power supply voltages can be provided for the different operating voltages required by the light-emitting devices in sub-pixels with different display modes and different emission colors. A larger absolute value of power supply voltage can be provided to sub-pixels that require a larger operating voltage, and a smaller absolute value of power supply voltage can be provided to sub-pixels that require a smaller operating voltage.

[0068] Optionally, the first correspondence includes the correspondence between the display mode, the emission color of the sub-pixel, and the cathode power supply voltage connected to the sub-pixel.

[0069] The cathode insulation setting for sub-pixels of different emitting colors allows for the provision of different cathode power supply voltages to these sub-pixels. For example, under the same display mode and grayscale, the cathode power supply voltage can be provided according to the operating voltage required by the light-emitting devices of sub-pixels with different emitting colors. Since the cathode power supply voltage is negative, when the anode power supply voltage of the light-emitting device is the same, the larger the absolute value of the cathode power supply voltage, the greater the voltage difference across the light-emitting device. Therefore, under the same display mode and grayscale, a larger absolute value of the cathode power supply voltage can be provided to sub-pixels requiring a higher operating voltage to emit light, while a smaller absolute value can be provided to the light-emitting device itself. This avoids power loss and helps reduce the power consumption of the display panel.

[0070] Specifically, the display panel stores a first correspondence between the display mode, the emission color of the sub-pixel, and the cathode power supply voltage. By substituting the display mode and the emission color of the sub-pixel into the first correspondence, the corresponding cathode power supply voltage of the sub-pixel can be found. This facilitates providing the cathode power supply voltage to the light-emitting device based on the display mode and the emission color of the sub-pixel, thereby providing the cathode power supply voltage to the light-emitting device according to the current required for emission, avoiding excessive power consumption due to a large absolute value of the provided cathode power supply voltage.

[0071] Optionally, the driving data includes a driving voltage for driving the sub-pixel to emit light; the correspondence includes a second correspondence, which includes the correspondence between display mode, display grayscale, the emission color of the sub-pixel and the driving voltage.

[0072] Based on the display panel's display mode, the sub-pixel's emission color, and the pre-stored correspondence, determine the driving data for the sub-pixels in each display mode, including:

[0073] The driving voltage corresponding to the sub-pixel is determined based on the display mode of the display panel, the display grayscale, the emission color of the sub-pixel, and the pre-stored second correspondence.

[0074] The driving voltage is used to provide a driving voltage to the anode of the light-emitting device (sub-pixel) and to provide a driving current to the light-emitting device. The driving voltage is generated by the pixel circuit according to a data voltage and / or a pulse width modulation voltage. By writing the data voltage and / or the pulse width modulation voltage to the pixel circuit, the pixel circuit generates a corresponding driving current, which facilitates driving the light-emitting device to emit light.

[0075] Specifically, the display panel stores a second correspondence between display mode, display grayscale, sub-pixel emission color, and driving voltage. By substituting the display mode, display grayscale, and sub-pixel emission color into the second correspondence, the corresponding driving voltage for the sub-pixel can be found. This facilitates the supply of data voltage and / or pulse width modulation voltage to the pixel circuit based on the display mode, display grayscale, and sub-pixel emission color, thereby providing a corresponding driving voltage to the sub-pixel. This ensures that the driving voltage is provided to the sub-pixel according to the current required for the light-emitting device to emit light, avoiding excessive power consumption caused by excessive driving current corresponding to the provided driving voltage. Simultaneously, the power supply voltage of the sub-pixel is determined based on the display mode and sub-pixel emission color, meaning each sub-pixel will be under optimal power supply and driving voltage, which is beneficial for improving display performance.

[0076] Based on the aforementioned technical solutions, the first correspondence includes the correspondence between the display mode, the emission color of the sub-pixel, and the cathode power supply voltage connected to the sub-pixel. Therefore, providing the corresponding driving data to the sub-pixel includes providing the corresponding cathode power supply voltage to the cathode of the sub-pixel. Based on this, Figure 3This is a flowchart of another display panel driving method provided in an embodiment of the present invention. Optionally, refer to... Figure 3 The driving methods for the display panel include:

[0077] S210. Based on the display mode of the display panel, the emission color of the sub-pixel, and the pre-stored correspondence, determine the driving data of the sub-pixel in each display mode. The driving data includes the power supply voltage. Different display modes have different maximum brightness values. The correspondence includes the correspondence between the display mode, the emission color of the sub-pixel, and the driving data. In at least one display mode, the power supply voltages corresponding to sub-pixels with different emission colors are not completely the same.

[0078] S220, provides the corresponding cathode power supply voltage to the cathode of the sub-pixel.

[0079] Specifically, the cathode power supply voltage supplied to the sub-pixel is determined based on the display mode of the display panel and the emission color of the sub-pixel. In other words, it is determined based on the brightness to be displayed by the sub-pixel and the working voltage required for emission. Therefore, the cathode power supply voltage is determined with a relatively small absolute value on the basis of meeting the working voltage required for the sub-pixel to emit light. This avoids the problem of excessive power consumption caused by an excessively large absolute value of the cathode power supply voltage.

[0080] S230 provides the corresponding driving voltage to the sub-pixel.

[0081] Specifically, by providing the pixel circuit with corresponding data voltage and / or pulse width modulation voltage, the pixel circuit provides the corresponding driving voltage to the sub-pixel to drive the light-emitting device to emit light. The driving voltage provided to the sub-pixel is determined according to the display mode of the display panel, the display grayscale, and the emission color of the sub-pixel. The data voltage and / or pulse width modulation voltage provided to the pixel circuit are determined according to the corresponding driving voltage, so that the driving current generated by the pixel circuit based on the data voltage and / or pulse width modulation voltage is more in line with the current required by the sub-pixel to display the display grayscale in the display mode. This allows the sub-pixel to better display the brightness to be displayed, which is beneficial to improving the display effect of the display panel.

[0082] The following section describes the driving method for the display panel in detail, based on the method for determining the corresponding relationship, but this is not intended to limit this application.

[0083] Based on the above technical solutions, Figure 4 This is a flowchart of another display panel driving method provided in an embodiment of the present invention. Optionally, refer to... Figure 4 The driving methods for the display panel include:

[0084] S310. For a sub-pixel with a set emission color, gamma adjustment is performed on the sub-pixel using different preset power supply voltages according to a preset display mode and preset grayscale. By using the optical parameters of the sub-pixel at the target position and the difference in optical parameters between the sub-pixel at the set position and the sub-pixel at the target position, the driving data of the sub-pixel in the preset display mode is determined, and the corresponding relationship is obtained. The sub-pixel with a set emission color includes any emission color sub-pixel. The optical parameters include at least brightness and color coordinates.

[0085] Specifically, by changing the preset power supply voltage under the same preset display mode and preset grayscale, multiple sets of optical parameters for sub-pixels at set positions and target positions are obtained. The corresponding driving data is determined by identifying the difference in optical parameters between the set and target positions in each set. Driving data corresponding to smaller optical parameter differences and smaller absolute values ​​of the preset power supply voltage can be selected. This reduces the power consumption of sub-pixels while ensuring small differences in optical parameters between different positions, thus improving the display effect while reducing the power consumption of the display panel. Furthermore, in this embodiment, the sub-pixel for the set emission color is any color sub-pixel. That is, for any color sub-pixel, gamma adjustment can be performed under different preset power supply voltages according to the preset display mode and preset grayscale. The driving data corresponding to the sub-pixel for the set emission color in the preset display mode is determined based on the difference in optical parameters between the set and target positions when the target position sub-pixel meets the target optical parameters, and the corresponding relationship is obtained. Optionally, the driving data of each sub-pixel of a certain luminous color in a preset display mode can be determined sequentially. This allows for the determination of the corresponding driving data based on the luminous requirements of sub-pixels of different luminous colors, thus avoiding the provision of driving data that would result in a large current in the sub-pixels (greater than the current required for the sub-pixels to emit light), thereby increasing the power consumption of the display panel and causing a deterioration in the display effect.

[0086] S320. Store the corresponding relationship.

[0087] Specifically, the correspondence is stored in the display panel in the form of a table, graph, or dot plot, for example. In some other embodiments, the correspondence may also be stored in the display panel in the form of a formula. This facilitates the subsequent retrieval of the corresponding driving data from the correspondence based on the display mode of the display panel and the emission color of the sub-pixels.

[0088] S330. Based on the display mode of the display panel, the emission color of the sub-pixel, and the pre-stored correspondence, determine the driving data of the sub-pixel in each display mode. The driving data includes the power supply voltage. Different display modes have different maximum brightness values. The correspondence includes the correspondence between the display mode, the emission color of the sub-pixel, and the driving data. In at least one display mode, the power supply voltages corresponding to sub-pixels with different emission colors are not completely the same.

[0089] S340 provides corresponding driving data to the sub-pixels.

[0090] It should be noted that the above statement that the driving data corresponding to sub-pixels of different emitting colors are not completely the same under the same display mode and the same display grayscale means that the driving data corresponding to sub-pixels of different emitting colors are not completely the same. In other words, all comparisons are made under the same display grayscale.

[0091] As a further implementation of this embodiment, based on the above technical solution, the specific method for determining the power supply voltage will be described below, but this is not intended to limit this application.

[0092] Figure 5 This is a flowchart of a power supply voltage determination method provided by an embodiment of the present invention. Optionally, refer to... Figure 5 The methods for determining the power supply voltage include:

[0093] S410. In the preset display mode and preset grayscale, provide power supply voltage to sub-pixels of the same luminous color according to the preset power supply voltage.

[0094] Specifically, the preset power supply voltage is provided, for example, by an external power supply device. When the power supply voltage is first provided to the sub-pixel, the maximum absolute value of the power supply voltage that the external power supply device can provide is provided to the sub-pixel. Furthermore, the power supply voltage is provided to sub-pixels of the same emission color to facilitate the determination of the power supply voltage corresponding to the emission color. For example, a power supply voltage of -5.5V is first provided to the cathode of the light-emitting device in the red sub-pixel.

[0095] S420: Perform gamma adjustment on the display state of the sub-pixel until the first current optical parameter of the sub-pixel at the target position is consistent with the target optical parameter.

[0096] The first current optical parameter of the sub-pixel is obtained, for example, by an optical device. Optical parameters include, but are not limited to, brightness and color coordinates. Sub-pixels of different emission colors may correspond to different target brightnesses, and sub-pixels of different emission colors may correspond to different target color coordinates.

[0097] Specifically, the driving voltage written to the sub-pixel is adjusted according to the preset display mode and preset grayscale until the driving voltage input to the sub-pixel at the target position makes the first current optical parameter of the sub-pixel at the target position consistent with the target optical parameter. That is, the luminance of the sub-pixel at the target position is the same as the luminance value corresponding to the target optical parameter, and the color coordinates of the sub-pixel at the target position are consistent with the color coordinates corresponding to the target optical parameter. In some embodiments, due to the existence of measurement error, if the difference between the first current optical parameter of the sub-pixel at the target position and the target optical parameter is within a preset difference range, it can also be considered that the first current optical parameter of the sub-pixel at the target position is consistent with the target optical parameter. For example, if the color coordinates corresponding to the optical parameters of the target position are (0.682, 0.317), then if the first coordinate of the color coordinates of the sub-pixel at the target position is in the range of (0.682-0.02, 0.682+0.02), and the second coordinate of the color coordinates of the sub-pixel at the target position is in the range of (0.317-0.02, 0.317+0.02), then the current color coordinates of the sub-pixel at the target position are considered to be consistent with the target color coordinates, that is, the first current optical parameter is consistent with the target optical parameter. When the first current optical parameter is consistent with the target optical parameter, the driving voltage corresponding to the sub-pixel is the optimal driving voltage.

[0098] S430, Detect the second current optical parameters of at least one sub-pixel at a set position under a preset display mode and a preset grayscale.

[0099] Specifically, the adjusted driving voltage corresponding to the target position sub-pixel is written to all sub-pixels of the same emitting color as the target position sub-pixel, making the emitting brightness of the same emitting color more consistent, thus improving the display effect of the display panel. The target position sub-pixel can be, for example, a sub-pixel located between the target position sub-pixel and the top edge of the display panel, or between the target position sub-pixel and the bottom edge of the display panel, or between the target position sub-pixel and the left edge of the display panel, or between the target position sub-pixel and the right edge of the display panel. The positions of different target position sub-pixels can vary. An optical device is used to detect the second current optical parameters of at least one target position sub-pixel under a preset display mode and preset grayscale, such as detecting the brightness and color coordinates of the target position sub-pixel.

[0100] S440, Update the preset power supply voltage according to the step value.

[0101] Specifically, the step value can be determined based on the required accuracy of the power supply voltage and the time required to determine the power supply voltage. When time needs to be saved, a larger step value can be set, such as 0.2V; when higher accuracy of the power supply voltage is required, a smaller step value can be set, such as 0.05V. In some embodiments, the step value can also be 0.1V or other values, and this embodiment does not limit this. The current preset power supply voltage is added to or subtracted from the step value (updating in the direction of reducing the absolute value of the preset power supply voltage) to obtain the updated preset power supply voltage. For example, if the current preset power supply voltage is -5.5V, adding a step value of 0.1V results in an updated preset power supply voltage of -5.4V.

[0102] S450. Determine whether the preset power supply voltage has reached the voltage threshold. If yes, proceed to step S460; otherwise, return to step S410.

[0103] Specifically, the voltage threshold is the minimum absolute power supply voltage that the external power supply equipment can provide, or the minimum absolute power supply voltage required to drive the light-emitting device to emit light. If the absolute value is too small, the light-emitting device cannot be driven to emit light. After updating the preset power supply voltage, the preset power supply voltage is compared with the voltage threshold. If the preset power supply voltage does not reach the voltage threshold, the power supply voltage is continued to be provided to the sub-pixels of the same emitting color according to the preset power supply voltage. This facilitates obtaining multiple first current optical parameters and second current optical parameters under the same display mode and the same preset grayscale. That is, it obtains the first current optical parameters and second current optical parameters corresponding to the same display mode, the same preset grayscale, and different preset power supply voltages.

[0104] S460. Determine the power supply voltage corresponding to the preset display mode and the emission color of the sub-pixel based on the differences between all the second current optical parameters and the corresponding first current optical parameters.

[0105] Specifically, by comparing all the second current optical parameters with the corresponding first current optical parameters, it can be determined which preset power supply voltage results in the smallest difference between the second and first current optical parameters. The preset power supply voltage corresponding to the smallest difference between the second and first current optical parameters and the smallest absolute value of the preset power supply voltage is then used as the power supply voltage corresponding to the preset display mode and the emission color of the sub-pixels. In this way, while determining the power supply voltage with the smallest absolute value, the emission effect of sub-pixels at different positions tends to be consistent, thereby improving the display effect of the display panel while ensuring reduced power consumption.

[0106] Thus, by determining the power supply voltage of a sub-pixel with a set emission color in one display mode, and by changing the preset display mode and repeating steps S410-S460, the power supply voltage of the sub-pixel with the same emission color in other display modes can be determined. By changing the set emission color and repeating steps S410-S460, the power supply voltage of sub-pixels with other emission colors in the preset display modes can be determined, thereby determining the power supply voltage corresponding to each sub-pixel with a different emission color in each display mode.

[0107] For example, Figure 6 This is a graph showing the absolute value of the power supply voltage changing with the display mode, provided by an embodiment of the present invention. Figure 6 As shown, the horizontal axis represents the maximum brightness value corresponding to different display modes, and the vertical axis represents the absolute value of the power supply voltage. Curve a is a curve showing the change of the absolute value of the power supply voltage of the same pixel unit with the display mode; curve b is a curve showing the change of the absolute value of the power supply voltage of the blue sub-pixel with the display mode as determined by the above technical solution; curve c is a curve showing the change of the absolute value of the power supply voltage of the red sub-pixel with the display mode as determined by the above technical solution; and curve d is a curve showing the change of the absolute value of the power supply voltage of the green sub-pixel with the display mode as determined by the above technical solution. Figure 6 As shown, in the prior art, the power supply voltage corresponding to sub-pixels with different emitting colors is the same, and the absolute value of the power supply voltage in different display modes is relatively large. However, according to the power supply voltage provided by the technical solution of this embodiment, the power supply voltage corresponding to sub-pixels with different emitting colors is different, the power supply voltage corresponding to different display modes is different, and the absolute value of the power supply voltage corresponding to all sub-pixels is relatively small, thereby effectively reducing the power consumption of the display panel.

[0108] In the above technical solution, optionally, the target position is the center position of the display panel. Thus, the set position sub-pixel can be, for example, a sub-pixel located between the target position sub-pixel and the top edge of the display panel, or a sub-pixel located between the target position sub-pixel and the bottom edge of the display panel. By adjusting the first current optical parameter of the target position sub-pixel to match the corresponding target optical parameter, and using the first current optical parameter of the target position sub-pixel as a reference, the second current optical parameter of the set position sub-pixel is compared with the corresponding first current optical parameter. This facilitates determining the power supply voltage corresponding to a better display effect of the display panel (small differences in optical parameters between sub-pixels at different positions).

[0109] Optionally, the preset grayscale is the maximum grayscale. For example, if the display panel's grayscale range is 0-255, then the maximum grayscale is 255. Alternatively, the display panel's grayscale range can be 0-1023, in which case the maximum grayscale is 1023. In the same display mode, for sub-pixels of the same luminous color, the power supply voltage corresponding to the maximum grayscale is used as the power supply voltage for that sub-pixel across all grayscale levels in that display mode. This saves time determining the power supply voltage and improves the production efficiency of the display panel.

[0110] Based on the above technical solution, the following description further explains the method for determining the power supply voltage, combining the method for determining the target optical parameters and the specific method for determining the power supply voltage based on the differences between all the second current optical parameters and the corresponding first current optical parameters. However, this description is not intended to limit the scope of this application.

[0111] In some implementations... Figure 7 This is a flowchart of another power supply voltage determination method provided by an embodiment of the present invention. Optionally, refer to... Figure 7 The methods for determining the power supply voltage include:

[0112] S510. In the preset display mode and preset grayscale, provide power supply voltage to sub-pixels of the same luminous color according to the preset power supply voltage.

[0113] S520: Obtain the overall optical parameters of the pixel unit when the display panel displays a white image under the preset display mode and preset grayscale; wherein, the pixel unit includes at least one sub-pixel of emitting light color.

[0114] Specifically, when the display panel displays a white image, all sub-pixels within the pixel unit emit light. Therefore, obtaining the overall optical parameters of the pixel unit allows us to obtain the optical parameters of each sub-pixel. By obtaining the overall optical parameters of the pixel unit when the display panel displays a white image, it is easier to determine the optical parameters of each sub-pixel based on the overall optical parameters. This avoids a situation where, after determining the driving data, all sub-pixels emit light according to the driving data, resulting in a poor display effect for the synthesized white image.

[0115] S530: Determine the target optical parameters corresponding to each sub-pixel of a certain luminous color based on the overall optical parameters.

[0116] Specifically, by determining the target optical parameters corresponding to each sub-pixel of a certain emission color, it is convenient to perform gamma adjustment on the corresponding sub-pixels of the emission color according to their respective target optical parameters, thereby determining the driving data of each sub-pixel of the emission color.

[0117] S540: Perform gamma adjustment on the display state of the sub-pixel until the first current optical parameter of the sub-pixel at the target position is consistent with the target optical parameter.

[0118] S550, detect the second current optical parameters of at least one sub-pixel at a set position under a preset display mode and a preset grayscale.

[0119] S560, update the preset power supply voltage according to the step value.

[0120] S570. Determine whether the preset power supply voltage has reached the voltage threshold. If yes, proceed to step S580; otherwise, return to step S510.

[0121] S580. Under the preset display mode and preset grayscale, calculate the difference values ​​between all the second current optical parameters and the corresponding first current optical parameters.

[0122] Specifically, the difference value is, for example, the difference or ratio between the second current optical parameter and the corresponding first current optical parameter, that is, the difference or ratio between the brightness value in the second current optical parameter and the brightness value in the first current optical parameter, or the difference between the color coordinates in the second current optical parameter and the color coordinates in the first current optical parameter. By calculating the difference value between the second current optical parameter and the corresponding first current optical parameter, it is convenient to determine the display effect of the display panel based on the difference value, and thus determine the corresponding power supply voltage based on the display effect.

[0123] S590, the preset power supply voltage when the difference value is less than the first preset threshold and the absolute value of the corresponding preset power supply voltage is less than the second preset threshold is taken as the power supply voltage of the sub-pixel.

[0124] Specifically, when the difference between the second current optical parameter and the corresponding first current optical parameter is less than the first preset threshold, it indicates that the optical parameters of sub-pixels at different positions on the display panel are close, that is, the luminous brightness of sub-pixels at different positions is close, and the color coordinates of sub-pixels at different positions are close, meaning that the display uniformity of the display panel is good. During the adjustment of the preset power supply voltage, the luminous brightness of the sub-pixels needs to be within a reasonable fluctuation range. When the absolute value of the preset power supply voltage is less than the second preset threshold, the luminous brightness of the sub-pixels exceeds the reasonable brightness range, and the brightness further increases with the step adjustment of the power supply voltage, indicating that the transistors in the pixel circuit of the sub-pixel are working in the saturation region, not the nonlinear region. At this time, with the instability of the power supply voltage, the luminous brightness of the sub-pixels is also unstable, resulting in poor display effect. For example, for the red sub-pixel, the luminous brightness is maintained at around 700 nits during the step process of the power supply voltage from -3.5V to -2.3V, with a fluctuation value of no more than 20 nits. However, when it is higher than -2.3V, the brightness increases by more than 10 nits for every 0.1V step. At this time, the luminous brightness of the sub-pixel is easily affected by the fluctuation of the power supply voltage.

[0125] By considering the voltage redundancy in the transistor saturation region of the sub-pixel circuit and the luminous stability of the sub-pixel, a second preset threshold is set to eliminate power supply voltages that can affect the luminous stability of the sub-pixel. Thus, by providing the sub-pixel with the power supply voltage determined according to the technical solution of this embodiment, not only can the power consumption of the display panel be reduced, but the display effect of the display panel can also be improved.

[0126] In some implementations... Figure 8 This is a flowchart of another power supply voltage determination method provided by an embodiment of the present invention. Optionally, refer to... Figure 8 The methods for determining the power supply voltage include:

[0127] S610. In the preset display mode and preset grayscale, provide power supply voltage to sub-pixels of the same luminous color according to the preset power supply voltage.

[0128] S620: Obtain the overall optical parameters of the pixel unit when the display panel displays a white image under the preset display mode and preset grayscale; wherein, the pixel unit includes at least one sub-pixel of emitting light color.

[0129] S630: Determine the target optical parameters corresponding to each sub-pixel of a certain luminous color based on the overall optical parameters.

[0130] S640: Perform gamma adjustment on the display state of the sub-pixel until the first current optical parameter of the sub-pixel at the target position is consistent with the target optical parameter.

[0131] S650, detect the second current optical parameters of at least one sub-pixel at a set position under a preset display mode and a preset grayscale.

[0132] S660, update the preset power supply voltage according to the step value.

[0133] S670. Determine whether the preset power supply voltage has reached the voltage threshold. If yes, proceed to step S680; otherwise, return to step S610.

[0134] S680, the target power supply voltage is a preset power supply voltage that satisfies the following conditions: the difference between the second current optical parameter and the corresponding first current optical parameter is less than the first preset threshold, the absolute value of the preset power supply voltage is less than the second preset threshold, and the brightness change of the sub-pixel within a preset time period is less than the third preset threshold; if there are multiple target power supply voltages, the target power supply voltage with the smallest absolute value is taken as the power supply voltage of the sub-pixel.

[0135] If there is only one target power supply voltage, then that target power supply voltage is the power supply voltage of the sub-pixel; if there are two target power supply voltages, then the target power supply voltage with the smaller absolute value is used as the power supply voltage of the sub-pixel; if there are multiple target power supply voltages, then the target power supply voltage with the smallest absolute value is used as the power supply voltage of the sub-pixel.

[0136] Specifically, when the difference between the second current optical parameter and the corresponding first current optical parameter is less than a first preset threshold, it indicates that the optical parameters of sub-pixels at different positions on the display panel are similar, meaning that the luminous brightness and color coordinates of sub-pixels at different positions are similar, indicating good display uniformity of the display panel. When the brightness change of a sub-pixel within a preset time period is less than a third preset threshold, it indicates that the sub-pixel can maintain stable light emission within the preset time period, thus indicating that the transistors in the pixel circuit of the sub-pixel are operating in the saturation region, not the nonlinear region, thereby ensuring stable light emission of the display panel. Therefore, the target power supply voltage can ensure a good display effect of the display panel. Furthermore, the target power supply voltage with the smallest absolute value among all target power supply voltages is used as the power supply voltage of the sub-pixel. Thus, by providing the power supply voltage to the sub-pixel according to the power supply voltage determined in this embodiment, the display effect of the display panel can be effectively improved while reducing the power consumption of the display panel.

[0137] Based on the above technical solutions, optionally, before determining the driving data of the sub-pixels in each display mode according to the display mode of the display panel, the emission color of the sub-pixels, and the pre-stored correspondence, the following method is also included:

[0138] Determine the preset display mode and the power supply voltage under the preset grayscale;

[0139] The power supply voltage is used to perform gamma adjustment on the sub-pixels under different display gray levels to obtain the correspondence between the display mode, display gray level, the emission color of the sub-pixel and the driving voltage.

[0140] Specifically, after determining the power supply voltage of a sub-pixel under a preset display mode and preset grayscale according to any of the above implementation schemes, the power supply voltage is used as the power supply voltage for gamma adjustment under all display grayscales of the same luminous color sub-pixel. This yields the optimal luminous driving voltage for different grayscales (e.g., a driving voltage that satisfies the difference between the second current optical parameter and the corresponding first current optical parameter being less than a first preset threshold). This establishes the correspondence between display mode, display grayscale, luminous color of the sub-pixel, and the driving voltage. This ensures that different screens can achieve a win-win situation of reduced power consumption and improved display effect.

[0141] When the difference between the second current optical parameter and the corresponding first current optical parameter is less than a first preset threshold, it indicates that the optical parameters of sub-pixels at different positions on the display panel are similar, and the display uniformity of the display panel is good. Therefore, the optimal driving voltage determined according to the technical solution of this embodiment helps to improve the display effect of the display panel.

[0142] This embodiment also provides a display panel. Figure 9 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention, such as... Figure 9 As shown, the display panel can be any product or component with display function, such as a mobile phone, smart bracelet, tablet computer, television, monitor, laptop computer, digital photo frame, VR, etc. The display panel is driven by the driving method of the display panel provided in any embodiment of the present invention, and therefore has the same beneficial effects as the driving method of the display panel provided in any embodiment of the present invention, which will not be elaborated further here.

[0143] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0144] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A driving method for a display panel, characterized in that, include: Based on the display mode of the display panel, the emission color of the sub-pixels, and the pre-stored correspondence, the driving data of the sub-pixels in each display mode is determined. The driving data includes the power supply voltage. The maximum brightness value corresponding to different display modes is different. In at least one display mode, the operating voltage of a sub-pixel with at least one emission color is greater than the operating voltage of a sub-pixel with another emission color, and the absolute value of the power supply voltage corresponding to the sub-pixel with at least one emission color is greater than the absolute value of the power supply voltage corresponding to the sub-pixel with another emission color. Provide the corresponding driving data to the sub-pixel; The correspondence includes the correspondence between the display mode, the emission color of the sub-pixel, and the driving data.

2. The method according to claim 1, characterized in that, The correspondence includes a first correspondence, which includes the correspondence between the display mode, the emission color of the sub-pixel, and the power supply voltage.

3. The method according to claim 2, characterized in that, The first correspondence includes the correspondence between the display mode, the emission color of the sub-pixel, and the cathode power supply voltage connected to the sub-pixel.

4. The method according to claim 1, characterized in that, The driving data includes a driving voltage for driving the sub-pixel to emit light; the correspondence includes a second correspondence, which includes the correspondence between the display mode, display grayscale, the emission color of the sub-pixel and the driving voltage. Based on the display mode of the display panel, the emission color of the sub-pixels, and the pre-stored correspondence, the driving data of the sub-pixels in each display mode is determined, including: The driving voltage corresponding to the sub-pixel is determined based on the display mode, grayscale, emission color of the sub-pixel, and the pre-stored second correspondence of the display panel. Providing the corresponding driving data to the sub-pixel includes: The corresponding driving voltage is provided to the sub-pixel.

5. The method according to any one of claims 1-3, characterized in that, Before determining the driving data of the sub-pixels in each display mode based on the display mode of the display panel, the emission color of the sub-pixels, and the pre-stored correspondence, the method further includes: For a sub-pixel with a set emission color, gamma adjustment is performed on the sub-pixel using different preset power supply voltages according to a preset display mode and a preset grayscale. By using the optical parameters of the sub-pixel at the target position and the difference in optical parameters between the sub-pixel at the set position and the sub-pixel at the target position, the driving data of the sub-pixel in the preset display mode is determined, and the corresponding relationship is obtained. Wherein, the sub-pixel for setting the emission color includes any emission color sub-pixel; the optical parameters include at least brightness and color coordinates; Store the correspondence.

6. The method according to claim 5, characterized in that, Determining the driving data of the sub-pixel in the preset display mode and obtaining the correspondence includes: Under the preset display mode and preset grayscale, the power supply voltage is provided to the sub-pixels of the same luminous color according to the preset power supply voltage; The display state of the sub-pixel is adjusted by gamma until the first current optical parameter of the sub-pixel at the target position is consistent with the target optical parameter; Detect the second current optical parameter of at least one sub-pixel at the set position under the preset display mode and the preset grayscale; Update the preset power supply voltage according to the step value, and return to execute the step of providing power supply voltage to sub-pixels of the same luminous color according to the preset power supply voltage until the preset power supply voltage reaches the voltage threshold. The power supply voltage corresponding to the preset display mode and the emission color of the sub-pixel is determined based on the differences between all the second current optical parameters and the corresponding first current optical parameters.

7. The method according to claim 5, characterized in that, The target position is the center of the display panel.

8. The method according to claim 6, characterized in that, The preset grayscale is the maximum grayscale.

9. The method according to claim 6, characterized in that, Before performing gamma adjustment on the display state of the sub-pixel until the first current optical parameter of the target position sub-pixel matches the target optical parameter, the method further includes: The overall optical parameters of a pixel unit are obtained when the display panel displays a white image under a preset display mode and preset grayscale; wherein, the pixel unit includes a sub-pixel of at least one luminous color; The target optical parameters corresponding to each sub-pixel of a certain luminous color are determined based on the overall optical parameters.

10. The method according to claim 6, characterized in that, Determining the power supply voltage corresponding to the preset display mode and the emission color of the sub-pixel based on the differences between all the second current optical parameters and the corresponding first current optical parameters includes: Under the preset display mode and the preset grayscale, calculate the difference values ​​between all the second current optical parameters and the corresponding first current optical parameters; The preset power supply voltage when the difference value is less than a first preset threshold and the absolute value of the corresponding preset power supply voltage is less than a second preset threshold is taken as the power supply voltage of the sub-pixel.

11. The method according to claim 6, characterized in that, Determining the power supply voltage corresponding to the preset display mode and the emission color of the sub-pixel includes: a preset power supply voltage that satisfies the following conditions: the difference between the second current optical parameter and the corresponding first current optical parameter is less than a first preset threshold, the absolute value of the preset power supply voltage is less than a second preset threshold, and the brightness change value of the sub-pixel within a preset time period is less than a third preset threshold. If there are multiple target power supply voltages, the target power supply voltage with the smallest absolute value shall be used as the power supply voltage of the sub-pixel.

12. The method according to claim 4, characterized in that, Before determining the driving data of the sub-pixels in each display mode based on the display mode of the display panel, the emission color of the sub-pixels, and the pre-stored correspondence, the method further includes: Determine the preset display mode and the power supply voltage under the preset grayscale; The power supply voltage is used to perform gamma adjustment on the sub-pixel under different display gray levels to obtain the correspondence between the display mode, display gray level, the emission color of the sub-pixel and the driving voltage.

13. A display panel, characterized in that, The display panel is driven using the driving method described in any one of claims 1-12.

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