Display module, driving method thereof and display device

Abstract

This application discloses a display module, its driving method, and a display device. The driving method of the display module includes: acquiring backlight image data of a target display frame; determining the target power of each light-emitting device based on the backlight image data; determining the target emission order of the first, second, and third light-emitting devices when the display module displays the image of the target display frame based on the target power of each light-emitting device; and controlling the first, second, and third light-emitting devices to emit light in a time-division manner according to the target emission order when the display module displays the image of the target display frame. The technical solution provided by this application can reduce the power consumption of the display module, improve the operational reliability of the display module, and improve the display effect.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display module, its driving method, and a display device. Background Technology

[0002] With the development of display technology, liquid crystal displays (LCDs) have become the most common display devices. Among them, LCDs that use field-sequential color (FSC) to display images do not require the setting of red, green, and blue color filter layers, thereby reducing light loss and improving backlight utilization.

[0003] The existing FSC LCD display works by dividing the display time of each frame of an image into three time subframes. Within each time subframe, the backlight module emits only one of the following: red light, blue light, and green light. These colors are then superimposed on the human eye through the temporal sequence.

[0004] Since the display time of each frame of an image is divided into three time subframes, when displaying a frame of solid color, the backlight corresponding to the solid color can only emit light within one time subframe. In order to ensure high brightness within a short light emission time, a larger driving current is usually required to drive the backlight to emit light. However, this also increases the instantaneous power consumption generated by the driving circuit, reduces the display effect and lifespan of the display module, etc. Summary of the Invention

[0005] This application provides a display module, its driving method, and a display device to reduce the power consumption of the display module and improve its operational reliability.

[0006] According to one aspect of this application, a driving method for a display module is provided. The display module includes a substrate, a backlight display layer located on one side of the substrate, and a liquid crystal display layer located on the side of the backlight display layer away from the substrate. The backlight display layer includes a plurality of pixel driving circuits electrically connected to light-emitting devices. The pixel driving circuits include a first pixel driving circuit electrically connected to a first light-emitting device, a second pixel driving circuit electrically connected to a second light-emitting device, and a third pixel driving circuit electrically connected to a third light-emitting device, wherein the first light-emitting device, the second light-emitting device, and the third light-emitting device emit different colors. The driving method includes: Acquire backlight image data of the target display frame, and determine the target power of each of the light-emitting devices based on the backlight image data; Based on the target power of each of the light-emitting devices, the target light-emitting order of the first light-emitting device, the second light-emitting device, and the third light-emitting device is determined when the display module displays the image of the target display frame; When the display module displays the image of the target display frame, the first light-emitting device, the second light-emitting device, and the third light-emitting device are controlled to emit light in a time-division manner according to the target light emission sequence.

[0007] According to another aspect of this application, a display module is provided, comprising: a substrate, a backlight display layer located on one side of the substrate, and a liquid crystal display layer located on the side of the backlight display layer away from the substrate; the backlight display layer includes a plurality of pixel driving circuits electrically connected to light-emitting devices, the pixel driving circuits including a first pixel driving circuit electrically connected to a first light-emitting device, a second pixel driving circuit electrically connected to a second light-emitting device, and a third pixel driving circuit electrically connected to a third light-emitting device, wherein the first light-emitting device, the second light-emitting device, and the third light-emitting device emit different colors; The display module further includes a driving device; the driving device is used to execute the driving method of the display module described in this application.

[0008] According to another aspect of this application, a display device is provided, including the display module described in this application.

[0009] The technical solution of this application acquires backlight image data of the target display frame, determines the target power of each light-emitting device based on the backlight image data, and determines the target emission order of the first, second, and third light-emitting devices when the display module displays the image of the target display frame based on the target emission order. This allows the first, second, and third light-emitting devices to emit light in a time-division manner when the display module displays the image of the target display frame, thus avoiding large current surges caused by excessively large differences in the target power of two light-emitting devices with adjacent emission orders. This reduces device malfunctions caused by current surges, lowers the power of the display module, and improves the operational reliability of the display module.

[0010] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application, 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1This is a schematic diagram of the structure of a display module provided in an embodiment of this application; Figure 2 A flowchart of a display module driving method provided in this application embodiment Figure 1 ; Figure 3 A flowchart of a display module driving method provided in this application embodiment Figure 2 ; Figure 4 This is a schematic diagram of a pixel driving circuit provided in an embodiment of this application; Figure 5 A flowchart of a display module driving method provided in this application embodiment Figure 3 ; Figure 6 A flowchart of a display module driving method provided in this application embodiment Figure 4 ; Figure 7 A schematic diagram illustrating the duration of a target display frame provided in an embodiment of this application; Figure 8 A flowchart of a display module driving method provided in this application embodiment Figure 5 ; Figure 9 A flowchart of a display module driving method provided in this application embodiment Figure 6 ; Figure 10 This is a schematic diagram of another display module provided in an embodiment of this application; Figure 11 A flowchart of a display module driving method provided in this application embodiment Figure 7 ; Figure 12 This is a schematic diagram of the structure of another display module provided in an embodiment of this application; Figure 13 This is a top view of a display module provided in an embodiment of this application; Figure 14 A circuit structure diagram of a pixel driving circuit provided in an embodiment of this application; Figure 15 This is a top view of another display module provided in an embodiment of this application; Figure 16 A circuit structure diagram of another pixel driving circuit provided in an embodiment of this application; Figure 17 This is a partial timing diagram of the pixel driving circuit provided in an embodiment of this application; Figure 18 This is a top view of another display module provided in an embodiment of the present application; Figure 19 This is a top view of another display module provided in an embodiment of the present application; Figure 20 This is a top view of a display module provided in an embodiment of this application; Figure 21 This is a schematic diagram of the structure of a display device provided in an embodiment of this application. Detailed Implementation

[0013] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0014] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application 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 this application 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 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.

[0015] As described in the background section, existing FCS (Flatform Cryo-Semiconductor Display) divides the display time of each image frame into three time subframes. Within each time subframe, the backlight module emits only one of red, blue, or green light, which is then superimposed on the human eye through temporal sequence to create a color image. Although FCS LCDs without filters have higher luminous efficiency, because the display time of each image frame is divided into three time subframes, when displaying a solid color image, the backlight corresponding to that solid color can only emit light within one time subframe. This extended emission period necessitates a larger drive current to power the backlight, which also increases the instantaneous power consumption of the drive circuit, reducing the display effect and lifespan of the display module.

[0016] To address the aforementioned technical problems, this application provides a display module including a substrate, a backlight display layer located on one side of the substrate, and a liquid crystal display layer located on the side of the backlight display layer away from the substrate. The backlight display layer includes multiple pixel driving circuits electrically connected to light-emitting devices. Each pixel driving circuit includes a first pixel driving circuit electrically connected to a first light-emitting device, a second pixel driving circuit electrically connected to a second light-emitting device, and a third pixel driving circuit electrically connected to a third light-emitting device. The first, second, and third light-emitting devices emit different colors. The driving method includes: acquiring backlight image data of a target display frame; determining a target power for each light-emitting device based on the backlight image data; determining a target emission order for the first, second, and third light-emitting devices when the display module displays the image of the target display frame based on the target emission order; and controlling the first, second, and third light-emitting devices to emit light in a time-division manner when the display module displays the image of the target display frame.

[0017] By adopting the above technical solution, the backlight image data of the target display frame is acquired, and the target power of each light-emitting device is determined based on the backlight image data. Based on the target power of each light-emitting device, the target emission order of the first, second, and third light-emitting devices when the display module displays the image of the target display frame is determined. In order to control the first, second, and third light-emitting devices to emit light in a time-division manner when the display module displays the image of the target display frame, the target emission order can be used to avoid large current surges caused by excessive difference in the target power of two light-emitting devices with adjacent emission orders. This reduces device malfunctions caused by current surges, lowers the power of the display module, and improves the operational reliability of the display module.

[0018] The above is the core idea of ​​this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0019] It should be noted that the implementation methods provided in this application can be combined with each other without contradiction.

[0020] Figure 1 This is a schematic diagram of the structure of a display module provided in an embodiment of this application, as shown below. Figure 1As shown, the display module 100 includes a substrate 10, a backlight display layer 20 located on one side of the substrate 10, and a liquid crystal display layer 30 located on the side of the backlight display layer 20 away from the substrate 10. The backlight display layer 20 includes a plurality of pixel driving circuits electrically connected to light-emitting devices. The pixel driving circuits include a first pixel driving circuit 21 electrically connected to a first light-emitting device L1, a second pixel driving circuit 22 electrically connected to a second light-emitting device L2, and a third pixel driving circuit 23 electrically connected to a third light-emitting device L3. The first light-emitting device L1, the second light-emitting device L2, and the third light-emitting device L3 emit different colors.

[0021] The substrate 10 may include materials such as silicon carbide, sapphire, or silicon, and can provide sufficient support for the backlight display layer 20 and the liquid crystal display layer 30. The pixel driving circuit is used to drive the light-emitting devices to emit light to achieve the display function. The light-emitting devices include light-emitting diodes (LEDs) or mini LEDs, etc. The pixel driving circuit includes 7T1C pixel circuits, 5T2C pixel circuits, 6T2C pixel circuits, or 8T1C pixel circuits, etc., which can be set according to actual needs and are not specifically limited here. In some embodiments, the first light-emitting device L1, the second light-emitting device L2, and the third light-emitting device L3 can constitute a backlight unit, and the area where the backlight unit is located is a backlight partition. The first pixel driving circuit 21, the second pixel driving circuit 22, and the third pixel driving circuit 23 can drive the first light-emitting device L1, the second light-emitting device L2, and the third light-emitting device L3 in the backlight partition to achieve different brightness and color.

[0022] Based on the fact that the first light-emitting device L1, the second light-emitting device L2, and the third light-emitting device L3 emit different colors, in some embodiments, the light-emitting color of the first light-emitting device L1 can be one of red, blue, and green; the light-emitting color of the second light-emitting device L2 can be one of red, blue, and green that is different from the light-emitting color of the first light-emitting device L1; and the light-emitting color of the third light-emitting device L3 can be the remaining one of red, blue, and green that is different from the light-emitting colors of the first light-emitting device L1 and the second light-emitting device L2. For ease of description, this is illustrated by taking the example of the first light-emitting device L1 emitting red, the second light-emitting device L2 emitting green, and the third light-emitting device L3 emitting blue.

[0023] Understandably, compared to display modules where all light-emitting devices in the backlight display layer emit white light, the display module 100 of this application, by setting the backlight display layer 20 to include three light-emitting devices with different light-emitting colors, switches the backlight spectrum from the original broadband spectrum to a narrowband spectrum, making the three light-emitting colors generated after passing through the liquid crystal display layer 30 purer and achieving a higher color gamut.

[0024] In some embodiments, the liquid crystal display layer 30 includes a common electrode, pixel electrodes, and a liquid crystal control switch connected to the pixel electrodes. Figure 1 (Not shown in the image) and a liquid crystal layer located between the common electrode and the pixel electrode. The materials of the pixel electrode and the common electrode can be transparent conductive materials such as ITO or AZO to improve light transmittance. The liquid crystal display layer 30 also includes a plurality of liquid crystal control areas (also called liquid crystal sub-pixels) arranged in an array. The liquid crystal control areas are provided with pixel electrodes, which can form a perpendicular electric field with the common electrode to control the tilt angle of the liquid crystal molecules in the liquid crystal layer, thereby controlling the transmittance of the emitted light from the backlight display layer 20 in the liquid crystal control areas. The area of ​​the liquid crystal control areas is smaller than the area of ​​the backlight partitions, which can improve the resolution and enable the display module 100 to present a clear display image.

[0025] The following will be based on Figure 1 The display module 100 provided herein is described, and the driving method of the display module 100 is explained. Figure 2 A flowchart of a display module driving method provided in this application embodiment Figure 1 ,like Figure 2 As shown, the driving method includes: S101. Obtain the backlight image data of the target display frame, and determine the target power of each light-emitting device based on the backlight image data.

[0026] The target display frame refers to the frame of the image to be displayed. To achieve the target display frame, the color and brightness of each backlight zone in the backlight display layer 20 need to be controlled. The backlight image data includes the display data of each backlight zone. The backlight image data can be a set of two-dimensional array matrices, where each value in the two-dimensional array matrix represents the required display brightness level of the corresponding backlight zone, or it can be a low-resolution grayscale image. It can be set according to actual needs, and no specific limitation is made here. The target power of each light-emitting device refers to the total power consumed by each color light-emitting device when displaying the target display frame, that is, the total instantaneous power consumption consumed by each color light-emitting device when displaying the target display frame.

[0027] For example, the backlight image data of the target display frame can be acquired through a driver chip. Based on the acquired backlight image data, the display grayscale of each light-emitting device can be determined, i.e., the luminance and duration of each light-emitting device. The duration of illumination can be assumed to be one-third of the total illumination duration of a display frame. Based on the correspondence between luminance and driving current, the required driving current for each light-emitting device can be determined. Based on the voltage difference between the positive and negative power supply terminals in the pixel driving circuit and the driving current, the target power of each light-emitting device can be calculated. The sum of the target powers of light-emitting devices of the same color is the target power of all light-emitting devices of that color. For example, the target power of a single light-emitting device P = I × ΔU, where I is the required driving current of that light-emitting device, and ΔU is the voltage difference between the positive power supply terminal PVDD and the negative power supply terminal PVEE. The target power of all light-emitting devices of that color P(total) = I(total) × ΔU, where I(total) is the sum of the required driving currents of all light-emitting devices of that color.

[0028] S102. Based on the target power of each light-emitting device, determine the target light-emitting order of the first, second, and third light-emitting devices when the display module displays the image of the target display frame.

[0029] The target light emission sequence refers to the order in which the first, second, and third light-emitting devices emit light.

[0030] Specifically, the target emission order of the first, second, and third light-emitting devices can be set according to their target power. This can be done either in descending order of target power or in ascending order of target power. For example, if the target power of the first light-emitting device is greater than that of the second, and the target power of the second is greater than that of the third, then the target emission order could be: the first light-emitting device emits light first, the second light-emitting device emits light later, and the third light-emitting device emits light last. Alternatively, the target emission order could be: the third light-emitting device emits light first, the second light-emitting device emits light later, and the first light-emitting device emits light last. By rationally setting the emission order of each light-emitting device according to its target power, the current surges caused by the switching of emission periods between different colors can be reduced. This reduces problems such as device malfunctions, abnormal noise, and excessive electromagnetic interference caused by current surges, which helps to reduce the instantaneous power consumption of the display module and improve its operational reliability.

[0031] S103. When the display module displays the image of the target display frame, the first light-emitting device, the second light-emitting device, and the third light-emitting device are controlled to emit light in a time-division manner according to the target light emission sequence.

[0032] Specifically, the display duration of the target display frame can be divided into three consecutive time periods: a first time period, a second time period, and a third time period. Based on the target emission sequence, a light-emitting device is controlled to emit light during each of the first, second, and third time periods to achieve time-division multiplexing. For example, when the target emission sequence is the first, second, and third light-emitting device, the first light-emitting device emits light during the first time period, the second light-emitting device emits light during the second time period, and the third light-emitting device emits light during the third time period. The first, second, and third time periods are three consecutive time periods within a single display frame, and the mixing of the first, second, and third colors can be achieved using the persistence of vision characteristic of the human eye. In some implementations, the single-color emission period for each color within a display frame can be a display subframe; that is, the first, second, and third time periods can represent the emission periods of different display subframes.

[0033] The technical solution of this application embodiment acquires backlight image data of the target display frame, determines the target power of each light-emitting device based on the backlight image data, and determines the target emission order of the first, second, and third light-emitting devices when the display module displays the image of the target display frame based on the target emission power of each light-emitting device. This allows the first, second, and third light-emitting devices to emit light in a time-division manner according to the target emission order when the display module displays the image of the target display frame. This avoids large current surges caused by excessively large differences in the target power of two light-emitting devices with adjacent emission orders, reduces device malfunctions caused by current surges, lowers the power of the display module, and improves the operational reliability of the display module.

[0034] Based on the above embodiments, this application also provides a detailed description of acquiring backlight image data of the target display frame and determining the target power of each light-emitting device based on the backlight image data. Figure 3 A flowchart of a display module driving method provided in this application embodiment Figure 2 ,like Figure 3 As shown, the driving method includes: S201. Obtain the backlight image data of the target display frame and the light emission duration of each light-emitting device when the display module displays the image of the target display frame.

[0035] The light emission duration of each light-emitting device can be one-third of the total light emission duration of a display frame by default, or the light emission duration of each light-emitting device can be the light emission duration of the corresponding color light-emitting device in the previous display frame of the target display frame, that is, the duration for each light-emitting device to emit light when the display module displays the image of the previous display frame.

[0036] Specifically, the backlight image data of the target display frame, and the emission duration of each light-emitting device when the display module displays the image of the target display frame, can be obtained through the driver chip, etc. The method of obtaining the backlight image data and emission duration is not limited here. The emission duration of each light-emitting device can be referenced as follows: the emission duration of the first light-emitting device is the first emission duration, the emission duration of the second light-emitting device is the second emission duration, and the emission duration of the third light-emitting device is the third emission duration.

[0037] S202. Based on the backlight image data and the light emission duration, determine the data signal that the pixel driving circuit needs to receive.

[0038] For example, the display grayscale of the light-emitting device is obtained based on the backlight image data of the target display frame. The required luminous brightness of the light-emitting device can be determined by the display grayscale and the luminous duration. Based on the luminous brightness, the data signal that the pixel driving circuit needs to receive can be determined. For instance, based on the backlight image data, the corresponding data signal can be acquired and calculated to determine information such as the display grayscale, luminous duration, and luminous brightness of the light-emitting device. Then, it is converted into a data signal corresponding to the luminous brightness through a digital-to-analog converter. The pixel driving circuit can provide a corresponding driving current to the light-emitting device based on the data signal, enabling the light-emitting device to present the corresponding luminous brightness. Under the combined effect of the luminous brightness and luminous duration of the light-emitting device, the corresponding display grayscale can be achieved.

[0039] It should be noted that the above method for determining the data signal is only illustrative and can be set according to actual needs in practical applications. Other implementation methods for determining the data signal can also be used, including: determining the display grayscale of the light-emitting device based on the backlight image data and the light emission duration; obtaining the mapping relationship between the light emission duration of the light-emitting device and the data signal under the display grayscale of the light-emitting device; and determining the data signal that the pixel driving circuit needs to receive based on the mapping relationship.

[0040] Grayscale is used to describe the brightness level of an image. The smaller the grayscale value, the lower the brightness level; the larger the grayscale value, the higher the brightness level. Grayscale represents the brightness level perceived by the human eye within a single display frame. The perceived brightness level is related to both brightness and time. Grayscale can be considered the level corresponding to the integral of the light-emitting brightness and light-emitting time of a light-emitting device. The mapping relationship between the light-emitting duration of a light-emitting device and the data signal can be a mapping curve or a mapping table. Table 1 below shows the mapping table between the light-emitting duration and the data signal of a light-emitting device of a certain color at different grayscale levels. As shown in Table 1, the first row represents different light-emitting durations, where T represents the total light-emitting duration of a display frame. The first column represents different grayscale levels. The signals in the table corresponding to different grayscale levels in different rows and light-emitting durations in different columns are data signals. Table 1 only shows four different light-emitting durations; more different light-emitting durations can be set, which are not specifically limited here.

[0041] Specifically, under the same display grayscale, the longer the emission duration, the smaller the driving current corresponding to the data signal. That is, under the same display grayscale, the data signal is related to the emission duration. For example, referring to Table 1, when the display grayscale is 0, the second data signal Vdata02 corresponds to an emission duration of (1 / 3)×T, and the first data signal Vdata01 corresponds to an emission duration of (1 / 6)×T. The driving current corresponding to the second data signal Vdata02 is less than the driving current corresponding to the first data signal Vdata01. When the emission duration is different, the driving current can be controlled by adjusting the data signal, thereby regulating the emission brightness so that the light-emitting device can achieve the same display grayscale.

[0042] Table 1 For example, the backlight image data can be a grayscale image, from which the display grayscale of each light-emitting device can be directly determined. Based on the mapping relationship between the light-emitting duration of the light-emitting device and the data signal under the display grayscale of the light-emitting device, the data signal corresponding to the display grayscale and the light-emitting duration is used as the data signal that the pixel driving circuit needs to receive. This ensures that when the light-emitting device emits light within the light-emitting duration, the data signal enables the pixel circuit to provide the corresponding driving current to the light-emitting device, causing the light-emitting device to produce the corresponding brightness and achieve the corresponding display grayscale. In this way, by pre-storing the mapping relationship between the light-emitting duration and the data signal under different display grayscales, the data signal can be quickly determined without traversing according to a specific step size, or calculating the required brightness based on the display grayscale and the light-emitting duration, and then determining the data signal based on the required brightness, thus reducing the amount of calculation. The data signal can be obtained directly through curves or tables. The mapping relationship can also be matched with the visual characteristics of the human eye for non-linear compensation, improving the display effect of the display module and avoiding pure mathematical calculations based on the same formula, which may lead to a mismatch with the visual characteristics of the eye and affect the display effect.

[0043] S203. Based on the data signal, determine the driving current required by the pixel driving circuit, and based on the driving current, determine the target power of each light-emitting device.

[0044] Specifically, the drive current I is related to the data signal Vdata, and can be determined based on the specific circuit structure of the pixel driving circuit and the data signal Vdata. For example, Figure 4 This is a schematic diagram of a pixel driving circuit provided in an embodiment of this application, as shown below. Figure 4 As shown, the pixel driving circuit is a 7T1C structure, and the driving current I flowing through the light-emitting device L is I = K × (Vdata - Vdd). 2 K represents the performance parameter of the driving transistor M1, Vdata is the data signal, and Vdd is the positive voltage signal at the positive power supply terminal PVDD. The target power P is the product of the driving current and the driving voltage. The driving voltage is the voltage difference between the positive voltage signal Vdd at the positive power supply terminal PVDD and the negative voltage signal Vee at the negative power supply terminal PVEE. Therefore, the target power P = I × (Vdd - Vee). Thus, the target power corresponding to each type of light-emitting device can be determined based on the driving current of each pixel driving circuit. The target power corresponding to the first light-emitting device can be the first target power, the target power corresponding to the second light-emitting device can be the second target power, and the target power corresponding to the third light-emitting device can be the third target power.

[0045] S204. Based on the target power of each light-emitting device, determine the target light-emitting order of the first, second, and third light-emitting devices when the display module displays the image of the target display frame.

[0046] S205. When the display module displays the image of the target display frame, the first light-emitting device, the second light-emitting device, and the third light-emitting device are controlled to emit light in a time-division manner according to the target light emission sequence. The technical solution provided in this application, by acquiring the backlight image data of the target display frame and the light emission duration of each light-emitting device when the display module displays the image of the target display frame, can determine the data signal that the pixel driving circuit needs to receive when displaying the image of the target display frame within the light emission duration based on the backlight image data and the light emission duration. Then, based on the data signal, it can determine the driving current that the pixel driving circuit needs to provide. Based on the driving current, it can determine the target power of each light-emitting device, so as to realize the calculation of the target power of each light-emitting device. This allows for subsequent adjustment of the light emission order of each light-emitting device based on the target power of each light-emitting device, thereby reducing the power of the display module and improving the display effect.

[0047] Based on the above embodiments, this application embodiment also describes the target light emission order of the first light-emitting device, the second light-emitting device, and the third light-emitting device when the display module displays the image of the target display frame according to the target power of each light-emitting device. Figure 5 A flowchart of a display module driving method provided in this application embodiment Figure 3 ,like Figure 5 As shown, the driving method for this display module includes: S301. Obtain the backlight image data of the target display frame, and determine the target power of each light-emitting device based on the backlight image data.

[0048] S302. Based on the target power of each light-emitting device corresponding to the target display frame, sort the target power in ascending or descending order.

[0049] Specifically, the target power values ​​of each light-emitting device are compared to determine the order of target power from largest to smallest or smallest to largest. For example, if the first light-emitting device has the largest first target power, the third light-emitting device has the second largest third target power, and the second light-emitting device has the smallest second target power, then the order from smallest to largest would be second target power, third target power, first target power, and the order from largest to smallest would be first target power, third target power, second target power.

[0050] S303. Determine the target light emission order of the first light-emitting device, the second light-emitting device, and the third light-emitting device according to the order of target power.

[0051] Specifically, when the target power is sorted in ascending order, the target emission order of each light-emitting device is consistent with the target power sorting. For example, if the target power of the first light-emitting device is the first target power, the target power of the second light-emitting device is the second target power, and the target power of the third light-emitting device is the third target power, and the second target power is less than the third target power, and the third target power is less than the first target power, then the target emission order is the second light-emitting device, the third light-emitting device, and the first light-emitting device. (The repetition of the first instance is likely an error in the original text.) In this way, by setting the target light emission sequence of each light-emitting device to be arranged in order of target power from large to small or from small to large, the current surge caused by the large difference between the target power of two adjacent light-emitting devices (that is, the target power of adjacent display sub-frames) can be reduced, thereby reducing the difference in driving current changes between different display sub-frames, reducing instantaneous power consumption, and improving the display effect.

[0052] S304. When the display module displays the image of the target display frame, the first light-emitting device, the second light-emitting device, and the third light-emitting device are controlled to emit light in a time-division manner according to the target light emission sequence.

[0053] Specifically, by controlling the light emission sequence of each light-emitting device based on the target power of each light-emitting device in ascending or descending order, the order of the driving current corresponding to each light-emitting device when it emits light can also be arranged in ascending or descending order. This can reduce the difference in driving current between adjacent display sub-frames, avoid large differences in driving current, and prevent large current surges that increase power (i.e., increase instantaneous power consumption), which is detrimental to the display effect.

[0054] The technical solution of this application embodiment sorts the target power of each light-emitting device corresponding to the target display frame in ascending or descending order, so that the first light-emitting device, the second light-emitting device and the third light-emitting device determine the target light-emitting order according to the sorting order of the target power, thereby reducing the difference in driving current between adjacent display sub-frames, reducing the power generated by the display module and improving the display effect.

[0055] In another optional embodiment, this application embodiment describes the target light emission order of the first light-emitting device, the second light-emitting device, and the third light-emitting device when the display module displays the image of the target display frame based on the target power of each light-emitting device. Figure 6A flowchart of a display module driving method provided in this application embodiment Figure 4 ,like Figure 6 As shown, the driving method for this display module includes: S401. Obtain the backlight image data of the target display frame, and determine the target power of each light-emitting device based on the backlight image data.

[0056] S402. Obtain the initial light-emitting sequence of the first light-emitting device, the second light-emitting device, and the third light-emitting device.

[0057] The initial light emission order is either the first light-emitting device, the second light-emitting device, and the third light-emitting device arranged in sequence, or the initial light emission order is the target light emission order of the previous display frame of the target display frame.

[0058] Specifically, the initial light emission order can be obtained from the driver chip. The initial light emission order can be a fixed order set by default, or a changing order that is adjusted in real time during the display process.

[0059] S403. Based on the initial light emission sequence, determine the absolute value of the first difference between the target power of the first light-emitting device that needs to emit light and the target power of the second light-emitting device that needs to emit light, and the absolute value of the second difference between the target power of the second light-emitting device that needs to emit light and the target power of the third light-emitting device that needs to emit light.

[0060] Specifically, the target power of the first light-emitting device is P1, the target power of the second light-emitting device is P2, and the target power of the third light-emitting device is P3. The absolute value of the first difference is |P1-P2|, and the absolute value of the second difference is |P3-P2|.

[0061] S404. When the absolute value of the first difference and the absolute value of the second difference are both less than or equal to the preset difference threshold, the initial emission sequence is determined as the target emission sequence.

[0062] The preset difference threshold can be a fixed value or a non-fixed value, and can be set according to actual needs. No specific limitation is made here.

[0063] Specifically, if both the absolute values ​​of the first and second differences are less than or equal to a preset difference threshold, it indicates that the difference between the target power of the first emitting light device and the target power of the second emitting light device is small, and the difference between the target power of the second emitting light device and the target power of the third emitting light device is also small. When the first emitting light device finishes emitting light and then switches to the second emitting light device, the small difference in their target power results in a small difference in the driving current flowing through them, effectively reducing power. Therefore, when both the absolute values ​​of the first and second differences are less than or equal to the preset difference threshold, the initial light emission sequence is determined to be the target light emission sequence. This ensures that power is reduced without changing the original light emission sequence, and there is no need to adjust the timing of the driving signals of the pixel driving circuit, thus simplifying the control process.

[0064] S405. When any one or more of the absolute values ​​of the first and second differences are greater than the preset difference threshold, the target power is sorted in ascending or descending order according to the target power of each light-emitting device corresponding to the target display frame.

[0065] Specifically, if at least one of the absolute values ​​of the first and second differences is greater than a preset difference threshold, it indicates that within a target display frame, there is a significant difference in the target power of two adjacent light-emitting devices. If the initial light-emitting order is still used as the target light-emitting order, a significant difference in the target power of two adjacent light-emitting devices will result in a significant difference in the driving current flowing through them, easily causing large current surges and high power (instantaneous power consumption), which is detrimental to reducing power and improving display effects. Therefore, when any one or more of the absolute values ​​of the first and second differences are greater than the preset difference threshold, the target power is sorted in ascending or descending order according to the target power of each light-emitting device corresponding to the target display frame, so that the light-emitting order of each light-emitting device can be set according to the target power sorting, thereby reducing the target power difference of the display sub-frames.

[0066] S406. Based on the ranking order of the target power, determine the target light emission order of the first light-emitting device, the second light-emitting device, and the third light-emitting device, so that in the target light emission order, the absolute value of the third difference between the target power corresponding to the first light-emitting device and the target power corresponding to the second light-emitting device, and the absolute value of the fourth difference between the target power corresponding to the second light-emitting device and the target power corresponding to the third light-emitting device are all less than or equal to a preset difference threshold.

[0067] Specifically, when the target power is sorted in ascending order, the target emission order of each light-emitting device is consistent with the target power sorting. For example, if the target power of the first light-emitting device is the first target power, the target power of the second light-emitting device is the second target power, and the target power of the third light-emitting device is the third target power, and the second target power is less than the third target power, and the third target power is less than the first target power, then the target emission order is the second light-emitting device, the third light-emitting device, and the first light-emitting device. (The repetition of the first instance is likely an error in the original text.) Thus, by setting the target emission sequence of each light-emitting device to be arranged in descending or ascending order of target power, the absolute value of the third difference between the target power of the first light-emitting device and the target power of the second light-emitting device in the target emission sequence is less than or equal to a preset difference threshold, and the absolute value of the fourth difference between the target power of the second light-emitting device and the target power of the third light-emitting device is less than or equal to a preset difference threshold. This reduces the instantaneous power consumption caused by excessive power differences between two adjacent light-emitting devices in the emission sequence, reduces the difference in driving current changes between different display subframes, reduces power consumption, and improves display effect.

[0068] S407. When any one or more of the absolute values ​​of the third and fourth differences are greater than the preset difference threshold, increase the light emission duration of the light-emitting device corresponding to the maximum target power, and / or decrease the light emission duration of the light-emitting device corresponding to the minimum target power; then, based on the adjusted light emission duration, redetermine the target power of each light-emitting device so that the absolute values ​​of the third and fourth differences are both less than or equal to the preset difference threshold.

[0069] Specifically, when the target emission order of each light-emitting device is set in descending or ascending order of target power, if the absolute value of the third difference between the target power of the first light-emitting device and the target power of the second light-emitting device is greater than a preset difference threshold, and / or the absolute value of the fourth difference between the target power of the second light-emitting device and the target power of the third light-emitting device is greater than a preset difference threshold, it indicates that the power difference between two adjacent light-emitting devices in the emission order is still large, and there is a risk of a large current surge. Therefore, when any one or more of the absolute values ​​of the third and fourth differences exceed the preset difference threshold, the light-emitting duration of the light-emitting device corresponding to the maximum target power is increased, and / or the light-emitting duration of the light-emitting device corresponding to the minimum target power is decreased. Under the same display grayscale, the light-emitting duration is inversely proportional to the target power; the longer the light-emitting duration, the lower the target power. Therefore, by increasing the light-emitting duration of the light-emitting device corresponding to the maximum target power, the target power of that light-emitting device can be reduced, so that the absolute values ​​of the third and fourth differences are both less than or equal to the preset difference threshold; and / or by decreasing the light-emitting duration of the light-emitting device corresponding to the minimum target power, the target power of that light-emitting device can be increased, so that the absolute values ​​of the third and fourth differences are both less than or equal to the preset difference threshold. In this way, the instantaneous power difference between two light-emitting devices with adjacent light-emitting sequences can be effectively reduced, the difference in driving current when switching light-emitting devices of different colors can be reduced, and problems such as device abnormalities, abnormal noise, and excessive electromagnetic interference caused by sudden current changes can be reduced, thereby improving the working reliability of the display module.

[0070] For example, Figure 7 This is a schematic diagram illustrating the duration of a target display frame provided in an embodiment of this application. Figure 7Three different implementation methods for achieving the target display frame are shown. T1 is the first implementation method, T2 is the second implementation method, and T3 is the third implementation method. The total light emission duration of the three implementation methods is T. Taking the target power of the first light-emitting device L1 being greater than the target power of the second light-emitting device L2, and the target power of the second light-emitting device L2 being greater than the target power of the third light-emitting device L3 under the default light emission duration or the initial light emission duration as an example, the first implementation method T1 increases the light emission duration of the first light-emitting device L1. The first light emission duration t1 of the first light-emitting device L1 is greater than the second light emission duration t2 of the second light-emitting device L2, and also greater than the second light emission duration t3 of the third light-emitting device L3, so as to reduce the target power generated by the first light-emitting device L1 in the first light emission duration t1, so that the absolute values ​​of the third and fourth differences are both less than or equal to the preset difference threshold, thereby reducing the difference in target power between two light-emitting devices with adjacent light emission sequences, reducing current surges, and improving the display effect. In the second implementation T2, the light-emitting duration of the third light-emitting device L3 is reduced. The first light-emitting duration t1 of the first light-emitting device L1 and the second light-emitting duration t2 of the second light-emitting device L2 are both greater than the third light-emitting duration t3 of the third light-emitting device L3. This increases the target power of the third light-emitting device L3 and reduces the difference in target power between two adjacent light-emitting devices, ensuring that the absolute values ​​of the third and fourth differences are both less than or equal to a preset difference threshold, reducing current surges and improving display performance. In the third implementation T3, the light-emitting duration of the first light-emitting device L1 is increased, and the light-emitting duration of the third light-emitting device L3 is reduced. The first light-emitting duration t1 of the first light-emitting device L1 is greater than the second light-emitting duration t2 of the second light-emitting device L2, and the second light-emitting duration t2 of the second light-emitting device L2 is greater than the third light-emitting duration t3 of the third light-emitting device L3. This reduces the target power of the first light-emitting device L1 and increases the target power of the third light-emitting device L3, reducing the difference in target power between two adjacent light-emitting devices. It should be noted that... Figure 7 The filling pattern is only used to indicate the emission period of different colored light-emitting devices, and is not used to indicate the structure of the light-emitting devices.

[0071] S408. When the display module displays the image of the target display frame, the first light-emitting device, the second light-emitting device, and the third light-emitting device are controlled to emit light in a time-division manner according to the target light emission sequence.

[0072] The technical solution of this application embodiment indicates that when any one or more of the first and second absolute differences are greater than a preset difference threshold, it means that within a target display frame, there is a significant difference in the target power of two adjacent light-emitting devices, leading to a high risk of current surge. Therefore, when any one or more of the first and second absolute differences are greater than the preset difference threshold, the target light-emitting order of each light-emitting device is set according to the target power of each light-emitting device corresponding to the target display frame, either in ascending or descending order of target power, so that the third and fourth absolute differences are both less than or equal to the preset difference threshold, thereby reducing the difference in target power between two adjacent light-emitting devices, reducing the risk of current surge, and improving the display effect. Furthermore, when the target emission order of each light-emitting device is set according to the target power in descending or ascending order, if any one or more of the absolute values ​​of the third and fourth differences are still greater than the preset difference threshold, the emission duration of the light-emitting device corresponding to the highest target power is increased, and / or the emission duration of the light-emitting device corresponding to the lowest target power is decreased. This adjusts the target power of each light-emitting device by adjusting its emission duration, reducing the difference in target power between two adjacent light-emitting devices in the emission order, so that the absolute values ​​of the third and fourth differences are both less than or equal to the preset difference threshold, thereby reducing instantaneous power consumption and improving the display effect.

[0073] In another optional embodiment, this application embodiment describes the target light emission order of the first light-emitting device, the second light-emitting device, and the third light-emitting device when the display module displays the image of the target display frame based on the target power of each light-emitting device. Figure 8 A flowchart of a display module driving method provided in this application embodiment Figure 5 ,like Figure 8 As shown, the driving method for this display module includes: S501. Obtain the backlight image data of the target display frame, and determine the target power of each light-emitting device based on the backlight image data.

[0074] S502. Obtain the absolute value of the fifth difference between the power of the last light-emitting device that needs to emit light in the previous display frame and the minimum target power, and the absolute value of the sixth difference between the power of the previous frame and the maximum target power.

[0075] The minimum target power refers to the minimum target power of each light-emitting device in the target display frame to be displayed, and the maximum target power refers to the maximum target power of each light-emitting device in the target display frame to be displayed.

[0076] Specifically, the power of the previous frame is the power corresponding to the last light-emitting device to emit light in the previous display frame. The power of the previous frame can be obtained through the driver chip. The absolute value of the power difference between the previous frame power and the minimum target power is calculated as the fifth absolute value of the difference, and the absolute value of the power difference between the previous frame power and the maximum target power is calculated as the sixth absolute value of the difference. For example, if the power of the previous frame is P01, and the minimum target power of the light-emitting device in the target display frame is Pmin, and the maximum target power is Pmax, then the absolute value of the fifth absolute value of the difference is |P01-Pmin|, and the absolute value of the sixth absolute value of the difference is |P01-Pmax|.

[0077] S503. When the absolute value of the fifth difference is less than the absolute value of the sixth difference, the target power is sorted in ascending order according to the target power of each light-emitting device corresponding to the target display frame. When the absolute value of the sixth difference is less than the absolute value of the fifth difference, the target power is sorted in descending order according to the target power of each light-emitting device corresponding to the target display frame.

[0078] Specifically, if the absolute value of the fifth difference is less than the absolute value of the sixth difference, it indicates that the difference between the power of the previous frame and the minimum target power is small, while the difference between the power of the previous frame and the maximum target power is large. In this case, the target power of each light-emitting device corresponding to the target display frame is sorted in ascending order so that subsequent light-emitting devices can emit light in ascending order of target power, thereby reducing the power difference when the screen switches from the previous display frame to the target display frame and reducing current surges. Conversely, if the absolute value of the sixth difference is less than the absolute value of the fifth difference, it indicates that the difference between the power of the previous frame and the maximum target power is small, while the difference between the power of the previous frame and the minimum target power is large. In this case, the target power of each light-emitting device corresponding to the target display frame is sorted in descending order so that subsequent light-emitting devices can emit light in descending order of target power, thereby reducing the power difference when the screen switches from the previous display frame to the target display frame and reducing current surges.

[0079] S504. Determine the target light emission order of the first light-emitting device, the second light-emitting device, and the third light-emitting device according to the target power ranking order.

[0080] Specifically, by setting the target emission sequence of each light-emitting device to be arranged in descending or ascending order of target power, the power difference between the target power of the first light-emitting device in the target emission sequence and the power of the previous frame is minimized. This reduces the power difference when the display screen switches from the previous display frame to the target display frame, reduces the current surge when switching from the previous display frame to the target display frame, reduces device malfunctions caused by current surges, reduces the difference in driving current changes between different sub-frames, reduces instantaneous power consumption, and improves the display effect.

[0081] S505. When the display module displays the image of the target display frame, the first light-emitting device, the second light-emitting device, and the third light-emitting device are controlled to emit light in a time-division manner according to the target light emission sequence.

[0082] The technical solution provided in this application obtains the fifth absolute value of the difference between the power of the last light-emitting device that needs to emit light in the previous display frame and the minimum target power, and the sixth absolute value of the difference between the power of the previous frame and the maximum target power. When the fifth absolute value of the difference is less than the sixth absolute value of the difference, the target light-emitting order of the light-emitting devices is set in ascending order of target power. When the sixth absolute value of the difference is less than the fifth absolute value of the difference, the target light-emitting order of the light-emitting devices is set in descending order of target power. This reduces the degree of current surge when switching from the previous display frame to the target display frame, reduces the difference in driving current changes between different display subframes, mitigates device abnormalities caused by current surges, and improves the display effect.

[0083] In another optional embodiment, this application embodiment describes the target light emission order of the first light-emitting device, the second light-emitting device, and the third light-emitting device when the display module displays the image of the target display frame based on the target power of each light-emitting device. Figure 9 A flowchart of a display module driving method provided in this application embodiment Figure 6 ,like Figure 9 As shown, the driving method for this display module includes: S601. Obtain the backlight image data of the target display frame, and determine the target power of each light-emitting device based on the backlight image data.

[0084] S602. Obtain the absolute value of the seventh difference between the next frame power of the light-emitting device that needs to emit light first and the minimum target power, and the absolute value of the eighth difference between the next frame power and the maximum target power in the next display frame of the target display frame.

[0085] Specifically, the next frame power is the target power corresponding to the light-emitting device that needs to emit light first in the next display frame. The next frame power can be obtained through the driver chip. The absolute value of the power difference between the next frame power and the minimum target power is calculated as the seventh absolute value of difference, and the absolute value of the power difference between the next frame power and the maximum target power is calculated as the eighth absolute value of difference. For example, if the next frame power is P02, and the minimum target power of the light-emitting device in the target display frame is Pmin, and the maximum target power is Pmax, then the seventh absolute value of difference is |P02-Pmin|, and the eighth absolute value of difference is |P02-Pmax|.

[0086] S603. When the absolute value of the seventh difference is less than the absolute value of the eighth difference, the target power is sorted in descending order according to the target power of each light-emitting device corresponding to the target display frame. When the absolute value of the eighth difference is less than the absolute value of the seventh difference, the target power is sorted in ascending order according to the target power of each light-emitting device corresponding to the target display frame.

[0087] Specifically, if the absolute value of the seventh difference is less than the absolute value of the eighth difference, it indicates that the difference between the power of the next frame and the minimum target power is small, while the difference between the power of the next frame and the maximum target power is large. In this case, the target power of each light-emitting device corresponding to the target display frame is sorted in descending order so that subsequent light-emitting devices can emit light in descending order of target power. When the display screen switches from the target display frame to the next display frame, the difference in target power between two adjacent light-emitting devices is small, thus reducing the power difference when the screen switches from the previous display frame to the target display frame. Conversely, if the absolute value of the eighth difference is less than the absolute value of the seventh difference, it indicates that the difference between the power of the next frame and the maximum target power is small, while the difference between the power of the next frame and the minimum target power is large. In this case, the target power of each light-emitting device corresponding to the target display frame is sorted in ascending order so that subsequent light-emitting devices can emit light in ascending order of target power. When the display screen switches from the target display frame to the next display frame, the difference in target power between two adjacent light-emitting devices is small, thus reducing the power difference when the screen switches from the target display frame to the next display frame.

[0088] S604. Determine the target light emission order of the first light-emitting device, the second light-emitting device, and the third light-emitting device according to the target power sorting order.

[0089] Specifically, by setting the target emission sequence of each light-emitting device to be arranged in descending or ascending order of target power, the power difference between the target power of the last light-emitting device in the target emission sequence and the power of the next frame is minimized. This reduces the power difference when the display screen switches from the target display frame to the next display frame, reduces the current surge when switching from the target display frame to the next display frame, reduces device malfunctions caused by current surges, reduces the difference in driving current changes between different display sub-frames, reduces instantaneous power consumption, and improves the display effect.

[0090] S605. When the display module displays the image of the target display frame, the first light-emitting device, the second light-emitting device, and the third light-emitting device are controlled to emit light in a time-division manner according to the target light emission sequence.

[0091] The technical solution provided in this application obtains the seventh absolute value of the difference between the next frame power and the minimum target power of the light-emitting device that needs to emit light first in the next display frame of the target display frame, and the eighth absolute value of the difference between the next frame power and the maximum target power. When the seventh absolute value of the difference is less than the eighth absolute value of the difference, the target emission order of the light-emitting devices is set according to the order of target power from large to small. When the eighth absolute value of the difference is less than the seventh absolute value of the difference, the target emission order of the light-emitting devices is set according to the order of target power from small to large. This reduces the degree of current change when switching from the target display frame to the next display frame, reduces the difference in driving current change between different subframes, mitigates device abnormalities caused by current change, and improves the display effect.

[0092] Figure 10 This is a schematic diagram of another display module provided in an embodiment of this application, as shown below. Figure 10 As shown, the liquid crystal display layer 30 includes a plurality of liquid crystal control switches 34 connected to the pixel electrodes 33. The liquid crystal display layer 30 also includes a common electrode 31 located on the side of the liquid crystal layer 32 opposite to the pixel electrodes 33.

[0093] The liquid crystal control switch 34 includes thin-film transistors, etc., and can be configured according to actual needs; no specific limitations are made here.

[0094] Specifically, by setting a liquid crystal control switch 34 connected to the pixel electrode 33, the driving signal can be written into the pixel electrode 33 through the liquid crystal control switch 34. The electric field between the pixel electrode 33 and the common electrode 31 drives the liquid crystal molecules in the liquid crystal layer 32 to rotate, thereby controlling the light transmittance, so that the display module 100 can present a clear display image.

[0095] Figure 11 A flowchart of a display module driving method provided in this application embodiment Figure 7 ,like Figure 11As shown, the driving method for the display module includes: S701. Obtain the backlight image data of the target display frame, and determine the target power of each light-emitting device based on the backlight image data.

[0096] S702. Based on the target power of each light-emitting device, determine the target light-emitting order of the first, second, and third light-emitting devices when the display module displays the image of the target display frame.

[0097] S703. When the display module displays the image of the target display frame, the first light-emitting device, the second light-emitting device, and the third light-emitting device are controlled to emit light in a time-division manner according to the target light emission sequence.

[0098] S704. Obtain the liquid crystal image data of the target display frame.

[0099] In order to achieve the target display frame, it is also necessary to control the transmittance of each liquid crystal control area (also known as liquid crystal sub-pixel) in the backlight display layer 20. The liquid crystal image data includes the transmittance data or grayscale data of each liquid crystal sub-pixel.

[0100] Specifically, the liquid crystal image data of the target display frame can be obtained through a driver chip, etc., and the method of obtaining the liquid crystal image data is not specifically limited here.

[0101] S705. When the display module displays the image of the target display frame, the pixel driving circuit is controlled to provide a corresponding driving current to the light-emitting device according to the backlight image data, and the liquid crystal control switch is controlled to provide a corresponding driving voltage to the pixel electrode according to the liquid crystal image data.

[0102] Specifically, the luminous brightness of each light-emitting device can be determined based on the acquired backlight image data. The driving current of each device can be determined based on the correlation between luminous brightness and driving current. This allows the pixel driving circuit to provide the corresponding driving current to the light-emitting devices, enabling the display module to adjust the emission sequence according to the target power of the light-emitting devices in the backlight layer. This reduces power consumption during light emission, and using three different colored light-emitting devices increases the color gamut of the backlight module. While the backlight layer emits light according to the target emission sequence, the liquid crystal display layer also controls the liquid crystal control switch to provide a corresponding driving voltage to each pixel electrode according to the timing sequence, based on the liquid crystal image data. This allows the liquid crystal molecules in the liquid crystal layer to rotate under the voltage difference between the pixel electrode and the common electrode, thereby regulating the transmittance through the liquid crystal layer, improving the display contrast of the display module, and enhancing the display effect.

[0103] The technical solution of this application embodiment acquires backlight image data of the target display frame, determines the target power of each light-emitting device based on the backlight image data, determines the target emission order of each light-emitting device based on the target power, and controls the pixel driving circuit to provide corresponding driving current to the light-emitting devices. This allows each light-emitting device to emit light in a time-division manner according to the target emission order under the action of each driving current, reducing the power consumption generated by the backlight display layer during emission and improving the display effect. Simultaneously, when the display module displays the image of the target display frame, it controls the liquid crystal control switch to provide corresponding driving voltage to the pixel electrodes based on the liquid crystal image data. This allows the liquid crystal molecules in the liquid crystal display layer to match the image requirements of the target display frame, improving the display contrast of the display module and enhancing the display effect.

[0104] Based on the same inventive concept, this application also provides a display module. Figure 12 This is a schematic diagram of the structure of another display module provided in an embodiment of this application, as shown below. Figure 12 As shown, the display module 100 includes a substrate 10, a backlight display layer 20 located on one side of the substrate 10, and a liquid crystal display layer 30 located on the side of the backlight display layer 20 away from the substrate 10. The backlight display layer 20 includes a plurality of pixel driving circuits electrically connected to light-emitting devices. The pixel driving circuits include a first pixel driving circuit 21 electrically connected to a first light-emitting device L1, a second pixel driving circuit 22 electrically connected to a second light-emitting device L2, and a third pixel driving circuit 23 electrically connected to a third light-emitting device L3. The first light-emitting device L1, the second light-emitting device L2, and the third light-emitting device L3 emit different colors. The display module also includes a driving device 40. The driving device 40 is used to execute the driving method of the display module provided in any embodiment of this application. Therefore, the display module 100 can achieve the beneficial effects of the driving method of the display module provided in the embodiments of this application. The similarities can be referred to the above description of the driving method of the display module provided in the embodiments of this application, and will not be repeated here.

[0105] Optional, Figure 13 This is a top view of a display module provided in an embodiment of this application. Figure 14 This application provides a circuit structure diagram of a pixel driving circuit, with reference to... Figure 13 and Figure 14 The backlight display layer 20 includes multiple light-emitting control lines, including a first light-emitting control line EM1, a second light-emitting control line EM2, and a third light-emitting control line EM3. The pixel driving circuit includes a driving transistor T1 and light-emitting control transistors (T6 and T7) electrically connected to the driving transistor T1.

[0106] The first light-emitting control line EM1 is electrically connected to the gate of the light-emitting control transistor of the plurality of first pixel driving circuits 21, the second light-emitting control line EM2 is electrically connected to the gate of the light-emitting control transistor of the plurality of second pixel driving circuits 22, and the third light-emitting control line EM3 is electrically connected to the gate of the light-emitting control transistor of the plurality of third pixel driving circuits 23.

[0107] It should be noted that, Figure 14 The diagram shows a light-emitting control transistor including a first light-emitting control transistor T6 and a second light-emitting control transistor T7. In other optional embodiments, the light-emitting control transistor may include only the first light-emitting control transistor T6, or only the second light-emitting control transistor T7, depending on actual needs. For ease of description, this example uses a light-emitting control transistor including the first light-emitting control transistor T6 and the second light-emitting control transistor T7.

[0108] Specifically, when the driving transistor T1 is in the on state, the light emission control signal provided by the light emission control line controls the light emission control transistor to be in the on state. When the voltage of the positive power supply terminal PVDD can flow through the first light emission control transistor T6, the driving transistor T1, the second light emission control transistor T7 and the light emission device L through the negative power supply terminal PVEE, the light emission device L emits light, and the light emission duration of the light emission device L can be adjusted by controlling the on-time of the light emission control transistor through the light emission control signal. Therefore, by setting three light-emitting control lines, the first light-emitting control line EM1, the second light-emitting control line EM2, and the third light-emitting control line EM3 can respectively provide the first light-emitting control signal Em1, the second light-emitting control signal Em2, and the third light-emitting control signal Em3 to the first pixel driving circuit 21, the second pixel driving circuit 22, and the third pixel driving circuit 23. By controlling the order in which the first light-emitting control signal line EM1, the second light-emitting control line EM2, and the third light-emitting control line EM3 provides the light-emitting control signal and the duration of the effective level, the light-emitting order and light-emitting time of the first light-emitting device L1, the second light-emitting device L2, and the third light-emitting device L3 are controlled. This satisfies the different light-emitting order and light-emitting time of each light-emitting device under different target display frames, reduces instantaneous power consumption, and improves the display effect.

[0109] Optional, Figure 15 This is a top view of another display module provided in an embodiment of this application. Figure 16 A circuit structure diagram of another pixel driving circuit provided in an embodiment of this application is shown below. Figure 15 and Figure 16The backlight display layer 20 also includes multiple data signal lines DATA and multiple scan signal lines SCAN; the pixel driving circuit 21 also includes a write transistor T2 electrically connected to the driving transistor T1; the data signal line DATA is electrically connected to the first terminal of the write transistor T2 of the multiple first pixel driving circuits 21, second pixel driving circuits 22 and third pixel driving circuits 23 located in the same column, and the second terminal of the write transistor T2 is electrically connected to the driving transistor T1; the scan signal line SCAN is electrically connected to the gate of the write transistor T2 of the multiple first pixel driving circuits 21, second pixel driving circuits 22 and third pixel driving circuits 23 located in the same row.

[0110] Among them, the data signal line DATA is used to provide the data signal Vdata to the pixel driving circuit, and the scan signal line SCAN is used to provide the scan signal Scan to the pixel driving circuit, so as to control the pixel driving circuit to write the data signal Vdata line by line.

[0111] Specifically, the pixel driving circuits connecting light-emitting devices of different colors can be connected to the same data signal line DATA and scan signal line SCAN. Each pixel driving circuit in the same column receives the data signal Vdata provided by the same data signal line DATA in a time-division manner, and each pixel driving circuit in the same row simultaneously receives the scan signal Scan provided by the same scan signal line SCAN. The pixel driving circuit writes the data signal Vdata row by row, so that the driving transistor T1 remains in the conducting state under the action of the data signal Vdata, in preparation for the subsequent light-emitting device to emit light.

[0112] The pixel driving circuit can scan row by row. After scanning each row, the pixel driving circuit sequentially transmits the first light-emitting control signal Em1, the second light-emitting control signal Em2, and the third light-emitting control signal Em3 according to the target light-emitting order, so as to control the light-emitting devices in each row to emit light according to the target light-emitting order. Alternatively, Figure 17 This is a partial timing diagram of the pixel driving circuit provided in an embodiment of this application, with reference to... Figures 15-17The first row of the scan signal line SCAN is used to provide the first scan signal Scan1, the second row of the scan signal line SCAN is used to provide the second scan signal Scan2, ..., the nth row of the scan signal line SCAN is used to provide the nth scan signal Scann. The first light emission control line EM1 is used to provide the first light emission control signal Em1 to the first pixel driving circuit 21, the second light emission control line EM2 is used to provide the second light emission control signal Em2 to the second pixel driving circuit 22, and the third light emission control line EM3 is used to provide the third light emission control signal Em3 to the third pixel driving circuit 23. Each row of the scanning signal line SCAN sequentially provides an effective scanning signal level to the pixel driving circuit of each row. After all the pixel driving circuits have completed scanning row by row, the first light emission control line EM1 simultaneously provides a first scanning signal Em1 to each first pixel driving circuit 21, causing each first light emission device L1 electrically connected to each first pixel driving circuit 21 to emit light. Then, the second light emission control line EM2 simultaneously provides a second scanning signal Em2 to each second pixel driving circuit 22, causing each second light emission device L2 electrically connected to each second pixel driving circuit 22 to emit light. Finally, the third light emission control line EM3 simultaneously provides a third scanning signal Em3 to each third pixel driving circuit 23, causing each third light emission device L3 electrically connected to each third pixel driving circuit 23 to emit light. The scanning control method and light emission control method of each pixel driving circuit in the backlight display layer 20 can be set according to actual needs. The above only illustrates two control methods; other methods are also possible and are not specifically limited here.

[0113] Optional, Figure 18 This is a top view of another display module provided in an embodiment of this application, as shown in the diagram. Figure 18 As shown, the light-emitting control line EM includes multiple first sub-lines E1 extending along a first direction X and arranged along a second direction Y, and a second sub-line E2 extending along the second direction Y; the first direction X and the second direction Y intersect; the second sub-line E2 is electrically connected to the multiple first sub-lines E1.

[0114] The first sub-line E1 and the second sub-line E2 are both located in the display area AA of the display module. The display area AA is the effective area in the display module 100 for displaying images. The display area AA includes multiple pixel driving circuits and light-emitting devices arranged in an array. The light-emitting device L is electrically connected to the pixel driving circuit, and the pixel driving circuit is used to drive the light-emitting device L to emit light, thereby realizing the display function.

[0115] The first sub-line E1 electrically connected to the first pixel driving circuit 21 is the first light emission control sub-line E11; the first sub-line E1 electrically connected to the second pixel driving circuit 22 is the second light emission control sub-line E12; and the first sub-line E1 electrically connected to the third pixel driving circuit 23 is the third light emission control sub-line E13. Correspondingly, the second sub-line E2 electrically connected to each of the first light emission control sub-lines E11 is the first light emission control sub-line E21; the second sub-line E2 electrically connected to each of the second light emission control sub-lines E12 is the second light emission control sub-line E22; and the second sub-line E2 electrically connected to each of the third light emission control sub-lines E13 is the third light emission control sub-line E23.

[0116] Specifically, the first direction X is the row direction of the display module 100, and the second direction Y is the column direction of the display module 100. The second sub-line E2 is located in the display area AA. A pixel driving circuit can be provided on one side of the second sub-line E2, or pixel driving circuits can be provided on both sides of the second sub-line E2. Figure 18 The diagram illustrates a structure where pixel driving circuits are arranged on both sides of the second sub-line E2 along the first direction X. By providing a second sub-line E2 extending along the second direction Y and a first sub-line E1 extending along the first direction X, with the same first sub-line E1 electrically connected to each pixel driving circuit in the same row, the light-emitting control signal provided by the second sub-line E2 can be transmitted to each pixel driving circuit through the first sub-line E1. This allows the pixel driving circuit to control the light-emitting device to emit light under the action of the light-emitting control signal. Thus, by positioning the second sub-line E2 within the display area AA, the light-emitting control signal provided by the second sub-line E2 can be directly transmitted to the first sub-line E1 within the display area AA. This helps reduce the line voltage drop on the first sub-line E1, preventing the display module 100 from having an excessively large size in the first direction X, which would result in a large line voltage drop on the first sub-line E1. This improves the accuracy of the light-emitting control signal transmitted to each pixel driving circuit, thereby enhancing the display effect.

[0117] It should be noted that the position of the second sub-line E2 in the display area AA can be set according to actual needs. Figure 18 The diagram shows that the second sub-line E2 is located in the center of the display area AA, ensuring that the signal transmission rate from the second sub-line E2 to the first sub-line E1 located on both sides of the second sub-line E2 is consistent. This increases the rate at which the pixel driving circuit receives the light emission control signal, thereby improving the display effect. In other optional embodiments, the second sub-line E2 may also be located in the left or right region of the center of the display area AA; no specific limitation is made here.

[0118] Optional, Figure 19 This is a top view of another display module provided in an embodiment of this application, as shown in the diagram. Figure 19As shown, along the first direction X, on both sides of the first center line E0 of the display area AA, there are second sub-lines E2 of the first light-emitting control line EM1, second sub-lines E2 of the second light-emitting control line EM2, and second sub-lines E2 of the third light-emitting control line EM3.

[0119] Wherein, the first center line E0 extends along the second direction Y, and the display area AA includes a first edge Eg1 and a second edge Eg2 that are set opposite to each other along the first direction X. Along the first direction X, the distance d1 between the first center line E0 and the first edge Eg1 is equal to the distance d2 between the first center line E0 and the second edge Eg2.

[0120] Specifically, the first center line E0 is the center line of the display area AA in the first direction X. By setting second sub-lines E2 of the first light-emitting control line EM1, second sub-lines E2 of the second light-emitting control line EM2, and second sub-lines E2 of the third light-emitting control line EM3 on both sides of the first center line E0, that is, second sub-lines E2 are set on both sides of the first center line E0, so that the first sub-line E1 in the same row can be electrically connected to the two second sub-lines E2 on both sides of the first center line E0. The light-emitting control signals provided by the two second sub-lines E2 can be directly transmitted to the same first sub-line E1 in the display area AA, which helps to further reduce the line voltage drop on the first sub-line E1, improve the accuracy of the light-emitting control signals transmitted to each pixel driving circuit, and improve the display effect.

[0121] It should be noted that, Figure 19 The description only exemplifies the provision of second sub-lines E3 on both sides of the first center line E0. The specific positions of the second sub-lines E2 on both sides of the first center line E0 can be set according to actual needs. In another optional embodiment, Figure 20 This is a top view of a display module provided in an embodiment of this application, as shown in the diagram. Figure 20As shown, the display area AA includes two second line groups. Each second line group consists of the second sub-line E2 of the first light-emitting control line EM1, the second sub-line E2 of the second light-emitting control line EM2, and the second sub-line E2 of the third light-emitting control line EM3, which are arranged adjacently. Specifically, the second line group near the first edge Eg1 consists of E211, E221, and E231, while the second line group near the second edge Eg2 consists of E222, E222, and E232. The two second line groups are located on both sides of the first center line E0. In the second line group near the first edge Eg1, the distance d3 of the second sub-line E2 located in the middle position is equal to the distance d4 of the first center line E0. In the second line group near the second edge Eg2, the distance d5 of the second sub-line E2 located in the middle position is equal to the distance d6 of the first center line E0. This arrangement makes the second line groups located on both sides of the first center line E0 symmetrical about the first center line E0, improving the signal uniformity of the first sub-line receiving the light emission control signal, reducing signal delay and voltage drop during signal transmission, and improving display uniformity.

[0122] Figure 20 The diagram only shows two second line groups in the display area AA. In other optional embodiments, more than three second line groups can be set in the display area AA, depending on the specific size of the display area AA. No specific limitation is made here. When n second line groups are set in the display area AA, the distance between the second sub-line located in the middle position of the second line group near the first edge Eg1 and the first edge Eg1 is 1 / 2n×D; the distance between the second sub-line located in the middle position of the second line group near the second edge Eg2 and the second edge Eg2 is 1 / 2n×D; and the distance between the second sub-lines located in the middle positions of two adjacent second line groups is 1 / 2n×D, where D is the width of the display area AA along the first direction X. This effectively shortens the charging distance from the second sub-line to the first sub-line, thereby improving the signal delay and voltage drop on the first sub-line, enhancing display uniformity, and achieving narrow bezels or no bezels.

[0123] Based on the above embodiments, continue to refer to Figures 18-20 Along the first direction X, a pixel driving circuit is provided between two adjacent second sub-lines E2.

[0124] Among them, the two adjacent second sub-lines E2 can be connected to the same light-emitting control line or connected to different light-emitting control lines. They can be set according to actual needs, and no specific limitation is made here.

[0125] Specifically, by setting a pixel driving circuit between any two adjacent second sub-lines E2, the second sub-lines of different light emission control lines are not all set on one side of the pixel driving circuit of the same column, which would affect the arrangement of the pixel driving circuit. At the same time, the gap between adjacent columns of pixel driving circuits is fully utilized to improve space utilization and avoid space waste.

[0126] Based on the same inventive concept, embodiments of this application also provide a display device, which includes the display module provided in any embodiment of this application. Therefore, the display device possesses the technical features of the display module provided in the embodiments of this application and can achieve the beneficial effects of the display module provided in the embodiments of this application. Similarities can be referred to the above description of the display module provided in the embodiments of this application, and will not be repeated here.

[0127] For example, Figure 21 This is a schematic diagram of the structure of a display device provided in an embodiment of this application, such as... Figure 21 As shown, the display device 200 includes the display module 100 provided in this application embodiment. The display device 200 provided in this application embodiment can be any electronic product with display function, including but not limited to the following categories: mobile phones, televisions, laptops, desktop monitors, tablet computers, digital cameras, smart bracelets, smart glasses, vehicle displays, medical devices, industrial control equipment, touch interactive terminals, etc., and this application embodiment does not make any special limitations on them.

[0128] Note that the above description is merely a preferred embodiment and the technical principles employed in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of this application, the scope of which is determined by the scope of the appended claims.

Claims

1. A driving method for a display module, characterized in that, The display module includes a substrate, a backlight display layer located on one side of the substrate, and a liquid crystal display layer located on the side of the backlight display layer away from the substrate; the backlight display layer includes a plurality of pixel driving circuits electrically connected to light-emitting devices, the pixel driving circuits including a first pixel driving circuit electrically connected to a first light-emitting device, a second pixel driving circuit electrically connected to a second light-emitting device, and a third pixel driving circuit electrically connected to a third light-emitting device, wherein the first light-emitting device, the second light-emitting device, and the third light-emitting device emit different colors; The driving method includes: Acquire backlight image data of the target display frame, and determine the target power of each of the light-emitting devices based on the backlight image data; Based on the target power of each of the light-emitting devices, the target light-emitting order of the first light-emitting device, the second light-emitting device, and the third light-emitting device is determined when the display module displays the image of the target display frame; When the display module displays the image of the target display frame, the first light-emitting device, the second light-emitting device, and the third light-emitting device are controlled to emit light in a time-division manner according to the target light emission sequence.

2. The driving method for the display module according to claim 1, characterized in that, Acquire backlight image data of the target display frame, and determine the target power of each of the light-emitting devices based on the backlight image data, including: When acquiring the backlight image data of the target display frame and when the display module displays the image of the target display frame, the light emission duration of each light-emitting device is determined; wherein, the light emission duration of each light-emitting device is one-third of the total light emission duration of a display frame, or, the light emission duration of each light-emitting device is the light emission duration of the light-emitting device in the previous display frame of the target display frame; Based on the backlight image data and the light emission duration, the data signal that the pixel driving circuit needs to receive is determined; Based on the data signal, the driving current required by the pixel driving circuit is determined, and based on the driving current, the target power of each of the light-emitting devices is determined.

3. The driving method for the display module according to claim 2, characterized in that, Based on the backlight image data and the emission duration, the data signals that the pixel driving circuit needs to receive are determined, including: The display grayscale of the light-emitting device is determined based on the backlight image data; Obtain the mapping relationship between the light-emitting duration of the light-emitting device and the data signal under the display grayscale of the light-emitting device; Based on the mapping relationship, the data signals that the pixel driving circuit needs to receive are determined.

4. The driving method for the display module according to claim 1, characterized in that, Determining the target emission order of the first, second, and third light-emitting devices when the display module displays the image of the target display frame, based on the target power of each of the light-emitting devices, includes: Based on the target power of each of the light-emitting devices corresponding to the target display frame, the target power is sorted in ascending or descending order; Based on the sorting order of the target power, the target light emission order of the first light-emitting device, the second light-emitting device, and the third light-emitting device is determined.

5. The driving method for the display module according to claim 1, characterized in that, Determining the target emission order of the first, second, and third light-emitting devices when the display module displays the image of the target display frame, based on the target power of each of the light-emitting devices, includes: Obtain the initial light-emitting order of the first light-emitting device, the second light-emitting device, and the third light-emitting device; wherein, the initial light-emitting order is the first light-emitting device, the second light-emitting device, and the third light-emitting device ordered sequentially, or, the initial light-emitting order is the target light-emitting order of the previous display frame of the target display frame; Based on the initial light emission sequence, determine the absolute value of the first difference between the target power of the light-emitting device that needs to emit light first and the target power of the light-emitting device that needs to emit light second, and the absolute value of the second difference between the target power of the light-emitting device that needs to emit light second and the target power of the light-emitting device that needs to emit light third. When both the absolute value of the first difference and the absolute value of the second difference are less than or equal to a preset difference threshold, the initial emission sequence is determined to be the target emission sequence.

6. The driving method for the display module according to claim 5, characterized in that, Determining the target emission order of the first, second, and third light-emitting devices when the display module displays the image of the target display frame, based on the target power of each of the light-emitting devices, further includes: When any one or more of the first absolute value of the difference and the second absolute value of the difference are greater than the preset difference threshold, the target power is sorted in ascending or descending order according to the target power of each light-emitting device corresponding to the target display frame. Based on the sorting order of the target power, the target light emission order of the first light-emitting device, the second light-emitting device, and the third light-emitting device is determined, such that in the target light emission order, the absolute value of the third difference between the target power corresponding to the first light-emitting device and the target power corresponding to the second light-emitting device, and the absolute value of the fourth difference between the target power corresponding to the second light-emitting device and the target power corresponding to the third light-emitting device are all less than or equal to the preset difference threshold.

7. The driving method for a display module according to claim 6, characterized in that, Determining the target emission order of the first, second, and third light-emitting devices when the display module displays the image of the target display frame, based on the target power of each of the light-emitting devices, further includes: When any one or more of the absolute values ​​of the third and fourth differences are greater than the preset difference threshold, the light emission duration of the light-emitting device corresponding to the highest target power is increased, and / or the light emission duration of the light-emitting device corresponding to the lowest target power is decreased; then, based on the adjusted light emission duration, the target power of each light-emitting device is re-determined so that the absolute values ​​of the third and fourth differences are both less than or equal to the preset difference threshold.

8. The driving method for a display module according to claim 1, characterized in that, Determining the target emission order of the first, second, and third light-emitting devices when the display module displays the image of the target display frame, based on the target power of each of the light-emitting devices, includes: Obtain the absolute value of the fifth difference between the power of the light-emitting device that needs to emit light last in the previous display frame and the minimum target power, and the absolute value of the sixth difference between the power of the previous frame and the maximum target power. When the absolute value of the fifth difference is less than the absolute value of the sixth difference, the target power is sorted in ascending order according to the target power of each of the light-emitting devices corresponding to the target display frame; and when the absolute value of the sixth difference is less than the absolute value of the fifth difference, the target power is sorted in descending order according to the target power of each of the light-emitting devices corresponding to the target display frame. Based on the sorting order of the target power, the target light emission order of the first light-emitting device, the second light-emitting device, and the third light-emitting device is determined.

9. The driving method for a display module according to claim 1, characterized in that, Determining the target emission order of the first, second, and third light-emitting devices when the display module displays the image of the target display frame, based on the target power of each of the light-emitting devices, includes: Obtain the absolute value of the seventh difference between the power of the light-emitting device that needs to emit light first in the next display frame of the target display frame and the minimum target power, and the absolute value of the eighth difference between the power of the next frame and the maximum target power. When the absolute value of the seventh difference is less than the absolute value of the eighth difference, the target power is sorted in descending order according to the target power of each of the light-emitting devices corresponding to the target display frame; and when the absolute value of the eighth difference is less than the absolute value of the seventh difference, the target power is sorted in ascending order according to the target power of each of the light-emitting devices corresponding to the target display frame. Based on the sorting order of the target power, the target light emission order of the first light-emitting device, the second light-emitting device, and the third light-emitting device is determined.

10. The driving method for a display module according to claim 1, characterized in that, The liquid crystal display layer includes a plurality of liquid crystal control switches connected to pixel electrodes; The driving method further includes: Acquire the liquid crystal image data of the target display frame; When the display module displays the image of the target display frame, the pixel driving circuit is controlled to provide a corresponding driving current to the light-emitting device according to the backlight image data, and the liquid crystal control switch is controlled to provide a corresponding driving voltage to the pixel electrode according to the liquid crystal image data.

11. A display module, characterized in that, include: The backlight display layer comprises a substrate, a backlight display layer located on one side of the substrate, and a liquid crystal display layer located on the side of the backlight display layer away from the substrate; the backlight display layer includes a plurality of pixel driving circuits electrically connected to light-emitting devices, the pixel driving circuits including a first pixel driving circuit electrically connected to a first light-emitting device, a second pixel driving circuit electrically connected to a second light-emitting device, and a third pixel driving circuit electrically connected to a third light-emitting device, wherein the first light-emitting device, the second light-emitting device, and the third light-emitting device emit different colors; The display module further includes a driving device; the driving device is used to perform the driving method of the display module according to any one of claims 1-10.

12. The display module according to claim 11, characterized in that, The backlight display layer includes multiple light-emitting control lines, including a first light-emitting control line, a second light-emitting control line, and a third light-emitting control line; The pixel driving circuit includes a driving transistor and a light-emitting control transistor electrically connected to the driving transistor. The first light-emitting control line is electrically connected to the gate of the light-emitting control transistor of the plurality of first pixel driving circuits, the second light-emitting control line is electrically connected to the gate of the light-emitting control transistor of the plurality of second pixel driving circuits, and the third light-emitting control line is electrically connected to the gate of the light-emitting control transistor of the plurality of third pixel driving circuits.

13. The display module according to claim 12, characterized in that, The backlight display layer also includes multiple data signal lines and multiple scan signal lines; The pixel driving circuit also includes a write transistor electrically connected to the driving transistor; The data signal line is electrically connected to the first terminal of the write transistor of the plurality of first pixel driving circuits, second pixel driving circuits and third pixel driving circuits located in the same column, and the second terminal of the write transistor is electrically connected to the driving transistor. The scan signal line is electrically connected to the gate of the write transistor of a plurality of first pixel driving circuits, second pixel driving circuits and third pixel driving circuits located in the same row.

14. The display module according to claim 12, characterized in that, The light-emitting control line includes multiple first sub-lines extending along a first direction and arranged along a second direction, as well as second sub-lines extending along the second direction; wherein the first direction and the second direction intersect. The second sub-line is electrically connected to multiple first sub-lines; Both the first sub-line and the second sub-line are located in the display area of ​​the display module.

15. The display module according to claim 14, characterized in that, Along the first direction, on both sides of the first center line of the display area, there are second sub-lines of the first light-emitting control line, second sub-lines of the second light-emitting control line, and second sub-lines of the third light-emitting control line; Wherein, the first center line extends along the second direction, and the display area includes a first edge and a second edge disposed opposite to each other along the first direction. Along the first direction, the distance between the first center line and the first edge is equal to the distance between the first center line and the second edge.

16. The display module according to claim 14, characterized in that, Along the first direction, the pixel driving circuit is disposed between two adjacent second sub-lines.

17. A display device, characterized in that, include: The display module according to any one of claims 11-16.

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