Display panel, driving method thereof, driving module and display device

Abstract

The embodiment of the invention provides a display panel and a driving method thereof, a driving module and a display device, the display panel comprises at least two partitions, at least two first power supply voltage signal lines and at least two first initialization signal lines, one partition comprises at least one sub-pixel, and the sub-pixel comprises a light-emitting element; the first initialization signal lines connected with the first electrodes of the light-emitting elements in the at least two subareas are different, the second electrodes of the light-emitting elements in the at least two subareas are insulated from each other, and the first power supply voltage signal lines connected with the second electrodes of the light-emitting elements in the at least two subareas are different. The first initialization signal line is used for transmitting a first initialization signal for initializing a first electrode of the light-emitting element, and the first power supply voltage signal line is used for transmitting a negative power supply voltage signal. According to the embodiment of the invention, the initial cross-voltage value difference and the brightness difference of the light-emitting elements in different partitions can be reduced.

Description

Technical Field

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

[0002] With the continuous development of display technology, the application scope of display panels is becoming more and more extensive, and people's requirements for display panels are also becoming higher and higher. The inventors of this application have found that the initial voltage difference of light emitting elements in different areas of some display panels is large, resulting in large brightness differences in different areas. Summary of the invention

[0003] The embodiments of the present application provide a display panel and a driving method, a driving module, and a display device thereof, which can realize independent setting of the first initialization signal line between different partitions, and are beneficial to reducing the initial voltage difference and brightness difference of the light-emitting elements in different partitions.

[0004] In a first aspect, an embodiment of the present application provides a display panel, which includes at least two partitions, at least two first power supply voltage signal lines and at least two first initialization signal lines, one partition includes at least one sub-pixel, and the sub-pixel includes a light-emitting element; the first electrodes of the light-emitting elements in at least two partitions are connected to different first initialization signal lines, the second electrodes of the light-emitting elements in at least two partitions are insulated from each other, the second electrodes of the light-emitting elements in at least two partitions are connected to different first power supply voltage signal lines, the first initialization signal line is used to transmit a first initialization signal for initializing the first electrode of the light-emitting element, and the first power supply voltage signal line is used to transmit a negative power supply voltage signal.

[0005] According to an implementation scheme of the first aspect of the present application, at least two partitions include a first partition and a second partition, the first power supply voltage signal line corresponding to the first partition provides a negative power supply voltage signal of a first voltage value, and the first initialization signal line corresponding to the first partition provides a first initialization signal of a second voltage value; the first power supply voltage signal line corresponding to the second partition provides a negative power supply voltage signal of a third voltage value, and the first initialization signal line corresponding to the second partition provides a first initialization signal of a fourth voltage value; wherein the first voltage value is different from the third voltage value, and the second voltage value is different from the fourth voltage value.

[0006] According to any of the aforementioned embodiments of the first aspect of the present application, the difference between the first voltage value and the second voltage value is a first difference, the difference between the third voltage value and the fourth voltage value is a second difference, and the difference between the first difference and the second difference is less than a preset threshold.

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, the first electrodes of the light-emitting elements in the same partition are connected to the same first initialization signal line, and the second electrodes of the light-emitting elements in the same partition are connected to the same first power supply voltage signal line.

[0008] In this way, the first electrodes of the light-emitting elements in the same partition are connected to the same first initialization signal line, and the second electrodes of the light-emitting elements in the same partition are connected to the same first power supply voltage signal line. This can reduce the number of first initialization signal lines and first power supply voltage signal lines in the display panel, which is beneficial to wiring design and saves production costs.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel includes a display area and a non-display area, the first initialization signal line includes a first sub-initialization signal line located in the display area and a second sub-initialization signal line located in the non-display area, the first electrodes of the light-emitting elements in at least two partitions are connected to different first sub-initialization signal lines, and different first sub-initialization signal lines are connected to different second sub-initialization signal lines.

[0010] According to any of the aforementioned embodiments of the first aspect of the present application, the first sub-initialization signal line connected to the first electrode of the light-emitting element in the same partition includes a first routing portion extending along the first direction and a second routing portion extending along the second direction, and the first routing portion is electrically connected to the second routing portion.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, the first sub-initialization signal line connected to the first electrode of the light-emitting element in the same partition includes multiple first routing portions and multiple second routing portions, and the multiple first routing portions and the multiple second routing portions are cross-connected to form a mesh structure.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, along the thickness direction of the display panel, the area formed by the orthographic projection of the mesh structure includes the first electrodes of N light-emitting elements in the corresponding partition, 1≤N≤M, M represents the number of light-emitting elements in the corresponding partition of the mesh structure, and N and M are both positive integers.

[0013] According to any of the aforementioned implementations of the first aspect of the present application, N=1.

[0014] According to any of the aforementioned embodiments of the first aspect of the present application, the first sub-initialization signal line connected to the first electrode of the light-emitting element in the same partition includes multiple first routing portions and one second routing portion, and the multiple first routing portions and the second routing portion are connected to form a comb-like structure.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel also includes multiple first solder pads, different second sub-initialization signal lines are connected to different first solder pads, different first solder pads are electrically connected to different first initialization signal output terminals of the driving module, and the first initialization signal output terminals are used to provide a first initialization signal.

[0016] According to any of the aforementioned embodiments of the first aspect of the present application, the non-display area includes a first non-display area and a second non-display area relative to each other and a third non-display area and a fourth non-display area relative to each other, the first non-display area, the display area and the second non-display area are arranged in sequence along the column direction of the display panel, the third non-display area, the display area and the fourth non-display area are arranged in sequence along the row direction of the display panel, and the column direction intersects the row direction; the first solder pad is located in the second non-display area and is electrically connected to the first initialization signal output terminal of the driving module, and the second sub-initialization signal line is located in the third non-display area and / or the fourth non-display area and extends to the first solder pad.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, along the thickness direction of the display panel, the display panel includes a substrate, a first metal layer, a second metal layer, a third metal layer and a fourth metal layer and an insulating layer between any two adjacent metal layers; one of the first routing portion and the second routing portion is located in the second metal layer, and the other is located in the third metal layer or the fourth metal layer.

[0018] According to any of the aforementioned embodiments of the first aspect of the present application, for any i-th partition in the display panel, the voltage value of the first initialization signal transmitted by the first initialization signal line corresponding to the i-th partition is determined based on the voltage value of the negative power supply voltage signal transmitted by the first power supply voltage signal line corresponding to the i-th partition and a preset initial cross-voltage value, and the initial cross-voltage value is the voltage difference between the voltage value of the first initialization signal and the voltage value of the negative power supply voltage signal, and i is a positive integer.

[0019] According to any of the aforementioned implementations of the first aspect of the present application, different partitions correspond to the same initial cross-pressure value.

[0020] According to any of the aforementioned implementations of the first aspect of the present application, the initial voltage span value is greater than 0V.

[0021] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel also includes a first scanning signal line, a second scanning signal line and a second initialization signal line, the sub-pixel also includes a pixel circuit, the pixel circuit is electrically connected to the first electrode of the light-emitting element, and the pixel circuit includes: a driving module; a first initialization module, the control end of the first initialization module is electrically connected to the first scanning signal line, the first end of the first initialization module is electrically connected to the first initialization signal line, and the second end of the first initialization module is electrically connected to the first electrode of the light-emitting element; a second initialization module, the control end of the second initialization module is electrically connected to the second scanning signal line, the first end of the second initialization module is electrically connected to the second initialization signal line, and the second end of the second initialization module is electrically connected to the control end of the driving module, and the second initialization module is used to transmit the second initialization signal of the second initialization signal line to the control end of the driving module to initialize the control end of the driving module; wherein the second initialization signal line reuses the first initialization signal line, or the second initialization signal line connected to the pixel circuits in at least two partitions is different from the first initialization signal line.

[0022] In a second aspect, an embodiment of the present application provides a method for driving a display panel, which is applied to a display panel provided in the first aspect, and the driving method includes: providing different first initialization signals to first electrodes of light-emitting elements in at least two partitions through at least two first initialization signal lines; providing different first voltage source signals to second electrodes of light-emitting elements in at least two partitions through at least two first voltage source signal lines.

[0023] According to any of the aforementioned embodiments of the second aspect of the present application, different first initialization signals are provided to the first electrodes of the light-emitting elements in at least two partitions through at least two first initialization signal lines, including: for any i-th partition in the display panel, obtaining the voltage value of the negative power supply voltage signal provided to the i-th partition and a preset initial cross-voltage value, where i is a positive integer; determining the voltage value of the first initialization signal transmitted by the first initialization signal line corresponding to the i-th partition according to the voltage value of the negative power supply voltage signal corresponding to the i-th partition and the preset initial cross-voltage value, the initial cross-voltage value being the voltage difference between the voltage value of the first initialization signal and the voltage value of the negative power supply voltage signal; based on the determined voltage value of the first initialization signal transmitted by the first initialization signal line corresponding to the i-th partition, providing a first initialization signal of a corresponding voltage value to the first initialization signal line corresponding to the i-th partition.

[0024] According to any of the aforementioned implementations of the second aspect of the present application, different partitions correspond to the same initial cross-pressure value.

[0025] In a third aspect, an embodiment of the present application provides a driving module, which is electrically connected to the display panel of the first aspect, and the driving module includes: an acquisition unit, used to acquire the voltage value of the negative power supply voltage signal provided to the i-th partition and a preset initial cross-voltage value for any i-th partition in the display panel, where i is a positive integer; a calculation unit, used to determine the voltage value of the first initialization signal transmitted by the first initialization signal line corresponding to the i-th partition based on the voltage value of the negative power supply voltage signal corresponding to the i-th partition and the preset initial cross-voltage value, wherein the initial cross-voltage value is the voltage difference between the voltage value of the first initialization signal and the voltage value of the negative power supply voltage signal; an output unit, used to provide a first initialization signal of a corresponding voltage value to the first initialization signal line corresponding to the i-th partition based on the determined voltage value of the first initialization signal transmitted by the first initialization signal line corresponding to the i-th partition.

[0026] In a fourth aspect, an embodiment of the present application provides a display device, which includes the display panel provided in the first aspect and / or the driving module provided in the third aspect.

[0027] The display panel and its driving method, driving module, and display device of the embodiment of the present application, the display panel includes at least two partitions, at least two first power supply voltage signal lines, and at least two first initialization signal lines, one partition includes at least one sub-pixel, and the sub-pixel includes a light-emitting element; the first electrodes of the light-emitting elements in at least two partitions are connected to different first initialization signal lines, the second electrodes of the light-emitting elements in at least two partitions are insulated from each other, the second electrodes of the light-emitting elements in at least two partitions are connected to different first power supply voltage signal lines, the first initialization signal line is used to transmit a first initialization signal for initializing the first electrode of the light-emitting element, and the first power supply voltage signal line is used to transmit a negative power supply voltage signal. In the embodiment of the present application, the first initialization signal line and the first power supply voltage signal line are independently set for each partition, which is conducive to realizing the independent setting of the first initialization signal between different partitions, and the light-emitting elements in each partition can obtain a suitable initial cross-voltage value in conjunction with the change of the negative power supply voltage signal transmitted by the first power supply voltage signal line, which is conducive to reducing the difference in initial cross-voltage values ​​and brightness of the light-emitting elements in different partitions. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 A schematic diagram of the structure of a display panel provided in an embodiment of the present application;

[0030] Figure 2 Another schematic diagram of the structure of a display panel provided in an embodiment of the present application;

[0031] Figure 3 A circuit diagram of a display panel provided in an embodiment of the present application;

[0032] Figure 4 Another circuit diagram of a display panel provided in an embodiment of the present application;

[0033] Figure 5 A further circuit diagram of a display panel provided in an embodiment of the present application;

[0034] Figure 6 A further circuit diagram of a display panel provided in an embodiment of the present application;

[0035] Figure 7 A partial cross-sectional schematic diagram of a display panel provided in an embodiment of the present application;

[0036] Figure 8 A circuit diagram of a pixel circuit in a display panel provided in an embodiment of the present application;

[0037] Fig. 9 A further circuit diagram of a display panel provided in an embodiment of the present application;

[0038] Fig.10 A schematic diagram of a flow chart of a method for driving a display panel provided in an embodiment of the present application;

[0039] Fig.11 A schematic diagram of a flow chart of S1001 in the method for driving a display panel provided in an embodiment of the present application;

[0040] Fig.12 A schematic diagram of the structure of a driving module provided in an embodiment of the present application;

[0041] Fig.13 A schematic diagram of the structure of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0044] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0045] It should be noted that the transistor in the embodiment of the present application can be an N-type transistor or a P-type transistor. For an N-type transistor, the on-level is a high level and the off-level is a low level. That is, when the gate of the N-type transistor is at a high level, the first and second poles thereof are connected, and when the gate of the N-type transistor is at a low level, the first and second poles thereof are disconnected. For a P-type transistor, the on-level is a low level and the off-level is a high level. That is, when the control pole of the P-type transistor is at a low level, the first and second poles thereof are connected, and when the control terminal of the P-type transistor is at a high level, the first and second poles thereof are disconnected. In a specific implementation, the gate of each of the above-mentioned transistors serves as its control pole, and, according to the signal of the gate of each transistor and its type, the first pole thereof can be used as the source and the second pole as the drain, or the first pole thereof can be used as the drain and the second pole as the source, and no distinction is made here. In addition, the on-level and the off-level in the embodiment of the present invention are both general terms, and the on-level refers to any level that can turn on the transistor, and the off-level refers to any level that can turn off / turn off the transistor.

[0046] In the embodiments of the present application, the term “electrically connected” may refer to a direct electrical connection between two components, or may refer to an electrical connection between two components via one or more other components.

[0047] It is obvious to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover modifications and changes of the present application that fall within the scope of the corresponding claims (technical solutions for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0048] Before describing the technical solutions provided by the embodiments of the present application, in order to facilitate the understanding of the embodiments of the present application, the present application first specifically describes the problems existing in the related art:

[0049] With the continuous development of display technology, the application scope of display panels is becoming more and more extensive, and people's requirements for display panels are also becoming higher and higher. At present, some display panels can realize the partition control of negative power supply voltage signal (ie, ELVSS signal) by auxiliary cathode patterning. The voltage value of the negative power supply voltage signal in each partition can obtain a reasonable voltage value of the negative power supply voltage signal according to the display brightness and total current of each partition, so as to achieve the purpose of saving power consumption.

[0050] One end of the light-emitting element receives a negative power supply voltage signal, and the other end receives an initialization voltage signal (i.e., a Vref signal). The initial voltage across the two ends of the light-emitting element is equal to the difference between the voltage value of the initialization voltage signal and the voltage value of the negative power supply voltage signal. Since the voltage values ​​of the negative power supply voltage signals of different partitions are different, when the voltage values ​​of the initialization voltage signals are the same, the initial voltage across the two ends of the light-emitting element will be significantly different, which will lead to large differences in brightness in different areas. Especially at low grayscale, the brightness difference in different areas is more obvious.

[0051] In view of the above research findings of the inventors, the embodiments of the present application provide a display panel and a driving method thereof, a driving module, and a display device, which can solve the above technical problems existing in the related art.

[0052] The technical concept of the embodiments of the present application is that the first initialization signal line and the first power supply voltage signal line are independently set for each partition, which is conducive to realizing independent setting of the first initialization signal between different partitions. In conjunction with the change of the negative power supply voltage signal transmitted by the first power supply voltage signal line, the light-emitting elements in each partition can obtain a suitable initial cross-voltage value, which is conducive to reducing the difference in initial cross-voltage values ​​and brightness of the light-emitting elements in different partitions.

[0053] The following first introduces the display panel provided in the embodiment of the present application.

[0054] Figure 1 A schematic diagram of the structure of a display panel provided in an embodiment of the present application. Figure 1As shown, the display panel 10 provided in the embodiment of the present application may include at least two partitions F, at least two first power supply voltage signal lines ELVSS and at least two first initialization signal lines Vref. Among them, the number of partitions F in the display panel 10 can be flexibly adjusted according to actual conditions, and the embodiment of the present application does not limit this. In some examples, one partition F can correspond to one first power supply voltage signal line ELVSS, and at the same time, one partition F can correspond to one first initialization signal line Vref, thereby realizing the partition setting of the first power supply voltage signal line ELVSS and the first initialization signal line Vref.

[0055] A partition F may include at least one sub-pixel, and the sub-pixel may include a light-emitting element D. Wherein, the number of sub-pixels in the partition F can be flexibly adjusted according to actual conditions, and the embodiment of the present application is not limited to this. Exemplarily, the light-emitting element D includes but is not limited to an organic light-emitting diode (OLED). The first initialization signal line Vref may be electrically connected to the first electrode of the light-emitting element D, and the first initialization signal line Vref may be used to transmit a first initialization signal for initializing the first electrode of the light-emitting element D. The first power supply voltage signal line ELVSS may be electrically connected to the second electrode of the light-emitting element D, and the first power supply voltage signal line ELVSS may be used to transmit a negative power supply voltage signal. Exemplarily, the first electrode of the light-emitting element D may be the anode of the light-emitting element D, and the second electrode of the light-emitting element D may be the cathode of the light-emitting element D.

[0056] In the embodiment of the present application, the first electrodes of the display area of ​​the display panel are insulated from each other, and the first electrodes of the light-emitting elements D in at least two partitions F are connected to different first initialization signal lines Vref. The second electrodes of the light-emitting elements D in at least two partitions F are insulated from each other, that is, they are not electrically connected to each other. For example, in some examples, the display panel may be provided with an isolation structure, and the isolation structure may be located between the light-emitting elements D in different partitions F to isolate the second electrodes of the light-emitting elements D in different partitions F. The second electrodes of the light-emitting elements D in at least two partitions F are connected to different first power supply voltage signal lines ELVSS.

[0057] Since the first power supply voltage signal lines ELVSS connected to different partitions F may be different, the voltage value of the negative power supply voltage signal received by the light-emitting elements D of different partitions F may be flexibly set according to different partitions. Similarly, since the first initialization signal lines Vref connected to different partitions F may be different, the voltage value of the first initialization signal received by the light-emitting elements D of different partitions F may also be flexibly set according to different partitions. For example, for the partition F with a larger voltage value of the negative power supply voltage signal, the voltage value of the first initialization signal received may also be set larger. For the partition F with a smaller voltage value of the negative power supply voltage signal, the voltage value of the first initialization signal received may also be set smaller. In this way, it is beneficial to reduce the difference in initial cross-voltage values ​​of the light-emitting elements of different partitions, and further to reduce the difference in brightness of the light-emitting elements of different partitions.

[0058] The display panel of the embodiment of the present application includes at least two partitions, at least two first power supply voltage signal lines and at least two first initialization signal lines, one partition includes at least one sub-pixel, and the sub-pixel includes a light-emitting element; the first electrodes of the light-emitting elements in at least two partitions are connected to different first initialization signal lines, the second electrodes of the light-emitting elements in at least two partitions are insulated from each other, the second electrodes of the light-emitting elements in at least two partitions are connected to different first power supply voltage signal lines, the first initialization signal line is used to transmit a first initialization signal for initializing the first electrode of the light-emitting element, and the first power supply voltage signal line is used to transmit a negative power supply voltage signal. In the embodiment of the present application, the first initialization signal line and the first power supply voltage signal line are independently set for each partition, which is conducive to realizing the independent setting of the first initialization signal between different partitions, and in conjunction with the change of the negative power supply voltage signal transmitted by the first power supply voltage signal line, the light-emitting elements in each partition can obtain a suitable initial cross-voltage value, which is conducive to reducing the difference in initial cross-voltage values ​​and brightness of the light-emitting elements in different partitions.

[0059] Figure 2 A schematic diagram of the structure of a display panel provided in an embodiment of the present application. Figure 2 As shown, according to some embodiments of the present application, optionally, at least two partitions F may include a first partition F1 and a second partition F2. The first partition F1 and the second partition F2 are any different partitions F. The first power supply voltage signal line ELVSS corresponding to the first partition F1 can provide a negative power supply voltage signal of a first voltage value, and the first initialization signal line Vref corresponding to the first partition F1 can provide a first initialization signal of a second voltage value. The specific sizes of the first voltage value and the second voltage value can be flexibly set according to actual conditions, and the embodiments of the present application are not limited to this.

[0060] The first power supply voltage signal line ELVSS connected to the second partition F2 provides a negative power supply voltage signal of a third voltage value, and the first initialization signal line Vref connected to the second partition F2 provides a first initialization signal of a fourth voltage value. The specific values ​​of the third voltage value and the fourth voltage value can be flexibly set according to actual conditions, and the embodiment of the present application does not limit this.

[0061] The first voltage value is different from the third voltage value, and the second voltage value is different from the fourth voltage value.

[0062] That is, the first power supply voltage signal line ELVSS connected to the first partition F1 and the first power supply voltage signal line ELVSS connected to the second partition F2 can provide negative power supply voltage signals with different voltage values. Accordingly, the first initialization signal line Vref connected to the first partition F1 and the first initialization signal line Vref connected to the second partition F2 can provide first initialization signals with different voltage values.

[0063] For example, when the voltage value of the negative power supply voltage signal transmitted by the first power supply voltage signal line ELVSS corresponding to the first partition F1 is greater than the voltage value of the negative power supply voltage signal transmitted by the first power supply voltage signal line ELVSS corresponding to the second partition F2, the voltage value of the first initialization signal transmitted by the first initialization signal line Vref corresponding to the first partition F1 may also be greater than the voltage value of the first initialization signal transmitted by the first initialization signal line Vref corresponding to the second partition F2. In this way, it is helpful to reduce the difference in initial voltage values ​​of light-emitting elements in different partitions, and further help to reduce the brightness difference of light-emitting elements in different partitions.

[0064] In some specific embodiments, optionally, the difference between the first voltage value and the second voltage value is the first difference, that is, the initial voltage-to-voltage value of the light-emitting element in the first partition F1 is the absolute value of the first difference, and the difference between the third voltage value and the fourth voltage value is the second difference, that is, the initial voltage-to-voltage value of the light-emitting element in the second partition F2 is the absolute value of the second difference. The difference between the first difference and the second difference is less than a preset threshold. The preset threshold can be flexibly adjusted according to actual conditions, and the embodiments of the present application do not limit this.

[0065] The smaller the preset threshold is, the smaller the difference between the initial cross-voltage value of the light-emitting element in the first partition F1 and the initial cross-voltage value of the light-emitting element in the second partition F2 is. For example, in some examples, the preset threshold can be equal to 0, that is, the initial cross-voltage value of the light-emitting element in the first partition F1 and the initial cross-voltage value of the light-emitting element in the second partition F2 can be equal, thereby greatly reducing the difference in initial cross-voltage values ​​and brightness of light-emitting elements in different partitions.

[0066] Continue to see Figure 2 As shown, according to some embodiments of the present application, optionally, the first electrodes of the light-emitting elements D in the same partition F can be connected to the same first initialization signal line Vref, and the second electrodes of the light-emitting elements D in the same partition F can be connected to the same first power supply voltage signal line ELVSS.

[0067] That is, the first electrodes of the light emitting elements D in the same partition F can receive the first initialization signal with the same voltage value, and the second electrodes of the light emitting elements D in the same partition F can receive the negative power supply voltage signal with the same voltage value.

[0068] In this way, the first electrode of the light-emitting element D in the same partition F is connected to the same first initialization signal line Vref, and the second electrode of the light-emitting element D in the same partition F is connected to the same first power supply voltage signal line ELVSS. This can reduce the number of first initialization signal lines Vref and first power supply voltage signal lines ELVSS in the display panel, which is beneficial to wiring design and saves production costs.

[0069] Figure 3 A circuit diagram of a display panel provided in an embodiment of the present application. Figure 3 As shown, according to some embodiments of the present application, optionally, the display panel 10 may include a display area AA and a non-display area NA. Multiple partitions F may be located in the display area AA. The first initialization signal line Vref may include a first sub-initialization signal line V1 located in the display area AA and a second sub-initialization signal line V2 located in the non-display area NA. The first electrodes of the light-emitting elements D in at least two partitions F are connected to different first sub-initialization signal lines V1, for example, the first electrodes of the light-emitting elements D in different partitions F may be connected to different first sub-initialization signal lines V1. Different first sub-initialization signal lines V1 are connected to different second sub-initialization signal lines V2.

[0070] In some examples, the display panel 10 may include a plurality of first pads P, and different second sub-initialization signal lines V2 may be connected to different first pads P. Different first pads P may be electrically connected to different first initialization signal output terminals of a driving module (not shown). The first initialization signal output terminal is used to provide a first initialization signal. Exemplarily, the driving module includes but is not limited to a driving display chip or a power chip.

[0071] In this way, since different second sub-initialization signal lines V2 are electrically connected to different first initialization signal output terminals of the driving module through different first pads P, and different first initialization signal output terminals can output first initialization signals with the same voltage value or different voltage values, different second sub-initialization signal lines V2 can transmit first initialization signals with the same voltage value or different voltage values, and then different first sub-initialization signal lines V1 can receive first initialization signals with the same voltage value or different voltage values.

[0072] Figure 3 Take the display panel including three partitions F (ie, partition F1', partition F2' and partition F3') as an example. Figure 3 As shown, corresponding to the three partitions, the first sub-initialization signal line V1 may include a first sub-initialization signal line V1-1, a first sub-initialization signal line V1-2, and a first sub-initialization signal line V1-3, and the second sub-initialization signal line V2 may include a second sub-initialization signal line V2-1, a second sub-initialization signal line V2-2, and a second sub-initialization signal line V2-3. The first pad P may include a first pad P1, a first pad P2, and a first pad P3. The first pad P1, the first pad P2, and the first pad P3 may be connected to different first initialization signal output terminals.

[0073] The first electrode of the light-emitting element D in the partition F1' may be connected to the first sub-initialization signal line V1-1, and the first sub-initialization signal line V1-1 may be electrically connected to the first pad P1 through the second sub-initialization signal line V2-1. The first electrode of the light-emitting element D in the partition F2' may be connected to the first sub-initialization signal line V1-2, and the first sub-initialization signal line V1-2 may be electrically connected to the first pad P2 through the second sub-initialization signal line V2-2. The first electrode of the light-emitting element D in the partition F3' may be connected to the first sub-initialization signal line V1-3, and the first sub-initialization signal line V1-3 may be electrically connected to the first pad P3 through the second sub-initialization signal line V2-3.

[0074] In some examples, the first pad P1, the first pad P2 and the first pad P3 can receive first initialization signals of different voltage values, and then the second sub-initialization signal line V2-1, the second sub-initialization signal line V2-2 and the second sub-initialization signal line V2-3 can transmit first initialization signals of different voltage values ​​to partitions F1', partitions F2' and partitions F3'.

[0075] Continue to see Figure 3According to some embodiments of the present application, optionally, the non-display area NA may include a first non-display area NA1 and a second non-display area NA2 relative to each other and a third non-display area NA3 and a fourth non-display area NA4 relative to each other. The first non-display area NA1, the display area AA, and the second non-display area NA2 may be arranged in sequence along the column direction W1 of the display panel, and the third non-display area NA3, the display area AA, and the fourth non-display area NA4 may be arranged in sequence along the row direction W2 of the display panel, and the column direction W1 intersects the row direction W2. In some examples, the first non-display area NA1 may be an upper frame, the second non-display area NA2 may be a lower frame, the third non-display area NA3 may be a left frame, and the fourth non-display area NA4 may be a right frame.

[0076] The first pad P may be located in the second non-display area NA2 and electrically connected to the first initialization signal output terminal of the driving module. The second sub-initialization signal line V2 may be located in the third non-display area NA3 and / or the fourth non-display area NA4 and extend to the first pad P. For example, in some examples, the first sub-initialization signal line V1 connected to a partition F may be connected to two second sub-initialization signal lines V2, and the two second sub-initialization signal lines V2 may be located in the third non-display area NA3 and the fourth non-display area NA4, respectively. For example, in other examples, the first sub-initialization signal line V1 connected to a partition F may be connected to a second sub-initialization signal line V2, and the second sub-initialization signal line V2 may be located in either the third non-display area NA3 or the fourth non-display area NA4.

[0077] Figure 4 Another circuit diagram of a display panel provided in an embodiment of the present application is shown in FIG. Figure 4 As shown, according to some embodiments of the present application, optionally, the first sub-initialization signal line V1 connected to the first electrode of the light-emitting element D in the same partition F may include a first wiring portion Z1 extending along a first direction X and a second wiring portion Z2 extending along a second direction Y, and the first wiring portion Z1 is electrically connected to the second wiring portion Z2. Exemplarily, the first direction X may be the row direction of the display panel, and the second direction Y may be the column direction of the display panel. Of course, the first direction X may also be the column direction of the display panel, and the second direction Y may be the row direction of the display panel, which is not limited in the embodiments of the present application.

[0078] Continue to see Figure 4 According to some embodiments of the present application, optionally, the first sub-initialization signal line V1 connected to the first electrode of the light-emitting element D in the same partition F may include multiple first routing portions Z1 and multiple second routing portions Z2, and the multiple first routing portions Z1 and the multiple second routing portions Z2 are cross-connected to form a mesh structure.

[0079] In this way, since multiple first routing sections Z1 and multiple second routing sections Z2 are cross-connected to form a mesh structure, the routing impedance of the first sub-initialization signal line V1 and the first initialization signal line Vref is greatly reduced, which can ensure that the voltage values ​​of the first initialization signals received by the light-emitting elements D in the same partition F are the same or similar, and ensure that the initial voltage-crossing values ​​of the light-emitting elements D in the same partition F are the same or similar.

[0080] Continue to see Figure 4 According to some embodiments of the present application, optionally, along the thickness direction of the display panel, the area formed by the orthographic projection of the mesh structure (such as Figure 4 The dashed area Q) shown includes the first electrodes of N light-emitting elements in the corresponding partition F, 1≤N≤M, M represents the number of light-emitting elements in the corresponding partition of the mesh structure, and N and M are both positive integers.

[0081] Figure 4 Take a partition including 6 light-emitting elements as an example, that is, M=6. Figure 4 As shown, the area formed by the positive projection of the mesh structure (such as Figure 4 The dotted area Q) shown may include the first electrode of a light-emitting element in the corresponding partition F, that is, N=1. In other words, the first electrode of each light-emitting element D may have a first routing portion Z1 and / or a second routing portion Z2 around it (such as up, down, left, and right).

[0082] Figure 5 This is another circuit diagram of a display panel provided in an embodiment of the present application. Figure 5 As shown, according to other embodiments of the present application, optionally, still taking one partition including 6 light-emitting elements as an example, the area formed by the positive projection of the mesh structure (such as Figure 5 The dotted area Q) shown may include first electrodes of multiple light-emitting elements (such as 3 light-emitting elements) in the corresponding partition F, that is, N<M, and the mesh structure may surround the first electrodes of multiple light-emitting elements in the corresponding partition F.

[0083] In order to better reduce the routing impedance of the first sub-initialization signal line V1, in some specific examples, it can be used Figure 4 The mesh structure shown can surround the first electrode of one light-emitting element in the corresponding partition F, that is, N=1, thereby increasing the number of first routing portions Z1 and / or second routing portions Z2 in the first sub-initialization signal line V1 and reducing the routing impedance of the first sub-initialization signal line V1 as much as possible.

[0084] Figure 6 This is another circuit diagram of a display panel provided in an embodiment of the present application. Figure 6 As shown, Figure 4Different from the embodiment shown, according to other embodiments of the present application, optionally, the first sub-initialization signal line V1 connected to the first electrode of the light-emitting element D in the same partition F may include multiple first wiring portions Z1 and one second wiring portion Z2, and multiple first wiring portions Z1 are connected to one second wiring portion Z2 to form a comb-like structure. The so-called comb-like structure can be understood as a shape similar to a comb, one second wiring portion Z2 can be regarded as a "comb handle", and multiple first wiring portions Z1 can be regarded as "comb teeth". For example, Figure 6 As shown, when the first sub-initialization signal line V1 may include two first routing portions Z1 and one second routing portion Z2, the comb-shaped structure is in the shape of a capital letter "F", that is, includes a "comb handle" and two "comb teeth".

[0085] In this way, since multiple first routing sections Z1 and one second routing section Z2 are connected to form a comb-like structure, the routing impedance of the first sub-initialization signal line V1 and the first initialization signal line Vref is greatly reduced, which can ensure that the voltage value of the first initialization signal received by the light-emitting element D in the same partition F is the same or similar, and ensure that the initial voltage-crossing value of the light-emitting element D in the same partition F is the same or similar.

[0086] Figure 7 A partial cross-sectional schematic diagram of a display panel provided in an embodiment of the present application. Figure 7 As shown, according to some embodiments of the present application, optionally, along the thickness direction Z of the display panel, the display panel 10 may include a substrate 01, a first metal layer M1, a second metal layer M2, a third metal layer M3 and a fourth metal layer M4, and an insulating layer between any two adjacent metal layers. For example, a gate insulating layer GI is provided between the substrate 01 and the first metal layer M1, a capacitor insulating layer CI is provided between the first metal layer M1 and the second metal layer M2, an interlayer dielectric layer ILD is provided between the second metal layer M2 and the third metal layer M3, and a planarization layer PLN is provided between the third metal layer M3 and the fourth metal layer M4. The substrate 01 may be a flexible substrate or a rigid substrate, which is not limited in the embodiments of the present application. In some examples, the first metal layer M1 may be used to form the gate of a transistor, the second metal layer M2 may be used to form the plate of a capacitor, and the third metal layer M3 may be used to form the connection structure of the source and drain of the transistor. Along the thickness direction Z of the display panel, on the side of the fourth metal layer M4 away from the third metal layer M3, the display panel is also provided with an anode layer RE. The first electrode of the light emitting element may be located on the anode layer RE.

[0087] Combination Figure 4 and Figure 7As shown, one of the first routing portion Z1 and the second routing portion Z2 may be located in the second metal layer M2, and the other may be located in the third metal layer M3 or the fourth metal layer M4. For example, the first routing portion Z1 is located in the second metal layer M2, and the second routing portion Z2 is located in the third metal layer M3 or the fourth metal layer M4. For another example, the second routing portion Z2 is located in the second metal layer M2, and the first routing portion Z1 is located in the third metal layer M3 or the fourth metal layer M4. The first routing portion Z1 and the second routing portion Z2 are connected through vias.

[0088] In this way, by setting the first routing portion Z1 and the second routing portion Z2 through at least two metal layers, a first sub-initialization signal line V1 with a mesh structure or a comb structure can be formed, which is beneficial to greatly reduce the routing impedance of the first sub-initialization signal line V1 and the first initialization signal line Vref, and can ensure that the voltage values ​​of the first initialization signal received by the light-emitting elements D in the same partition F are the same or similar, and ensure that the initial voltage-crossing values ​​of the light-emitting elements D in the same partition F are the same or similar.

[0089] Continue to see Figure 7 As shown, according to some embodiments of the present application, the display panel 10 may optionally be provided with an isolation structure 501, and the isolation structures 501 of different partitions are insulated from each other, and the isolation structure 501 may at least be used to isolate the second electrode SE of the light-emitting element. That is, the second electrodes SE of the light-emitting elements of different partitions may be insulated from each other.

[0090] According to some embodiments of the present application, optionally, the voltage value of the first initialization signal received by each partition can be flexibly adjusted. For example, for any i-th partition in the display panel, the voltage value of the first initialization signal transmitted by the first initialization signal line Vref connected to the i-th partition is determined according to the voltage value of the negative power supply voltage signal transmitted by the first power supply voltage signal line ELVSS connected to the i-th partition and a preset initial cross-voltage value, and the initial cross-voltage value is the voltage difference between the voltage value of the first initialization signal and the voltage value of the negative power supply voltage signal, and i is a positive integer. For example, the initial cross-voltage value may include the above-mentioned first difference and second difference, and the first difference and the second difference may be the same.

[0091] For example, the voltage value of the first initialization signal transmitted by the first initialization signal line Vref connected to the i-th partition may be calculated according to the following expression.

[0092] Vint=A+ELVSS' (1)

[0093] Among them, Vint represents the voltage value of the first initialization signal transmitted by the first initialization signal line Vref connected to the i-th partition, A represents the preset initial cross-voltage value, and ELVSS' represents the voltage value of the negative power supply voltage signal transmitted by the first power supply voltage signal line ELVSS connected to the i-th partition.

[0094] The initial voltage-to-voltage value A can be predetermined, and the specific value of the initial voltage-to-voltage value A can be flexibly adjusted according to actual conditions, such as flexibly adjusted according to display quality (such as brightness and / or chromaticity uniformity), which is not limited in the present embodiment. After the voltage value ELVSS' of the negative power supply voltage signal is determined, the voltage value Vint of the first initialization signal can be determined.

[0095] In some embodiments, the initial cross-voltage values ​​corresponding to different partitions may be the same, that is, the initial cross-voltage values ​​of the light-emitting elements in different partitions are ensured to be the same, so that the brightness difference of the light-emitting elements in different partitions is small.

[0096] In some embodiments, the initial voltage value is greater than 0V, that is, the voltage value Vint of the first initialization signal is greater than the voltage value ELVSS' of the negative power supply voltage signal, so that the first electrode of the light-emitting element has a relatively high potential, which is beneficial to shorten the charging time of the subsequent light-emitting element and make the light-emitting element light up quickly.

[0097] According to some embodiments of the present application, optionally, the brightness range of the partition display can be divided into multiple different brightness intervals. When displaying a complex picture, different partitions may be in different brightness intervals. In order to minimize the initial cross-pressure difference of the light-emitting elements in different partitions, optionally, different brightness intervals can correspond to the same initial cross-pressure value. For example, for example, the brightness range of the partition display is 0~1000nit, and 0~1000nit can be divided into multiple different brightness intervals. For example, 0~100nit is a brightness interval, 101~200nit is a brightness interval, ..., 901~1000nit is a brightness interval. Different brightness intervals can correspond to the same initial cross-pressure value, for example, 0~100nit corresponds to the initial cross-pressure value A, 101~200nit also corresponds to the initial cross-pressure value A, ..., 901~1000nit also corresponds to the initial cross-pressure value A.

[0098] When the partitions are in different brightness ranges, the same initial voltage value A can be used to calculate the voltage value Vint of the first initialization signal.

[0099] According to some embodiments of the present application, optionally, the voltage value of the negative power supply voltage signal transmitted by the first power supply voltage signal line connected to the corresponding i-th partition may be determined according to the following steps one and two.

[0100] Step 1: Obtain the target brightness of the sub-picture to be displayed in the i-th partition, where the target brightness includes the average brightness or the maximum brightness.

[0101] The grayscale to be displayed by each sub-pixel in the ith partition is known, and accordingly, the brightness to be displayed by each sub-pixel in the ith partition can also be determined. For example, there are N sub-pixels in the ith partition, and in step 1, the average value of the brightness to be displayed by the N sub-pixels can be calculated or the maximum value of the brightness to be displayed by the N sub-pixels can be selected as the target brightness of the sub-image to be displayed in the ith partition.

[0102] Step 2: Determine the target voltage value of the negative power supply voltage signal corresponding to the current brightness interval according to the current brightness interval where the target brightness is located and the first corresponding relationship between the brightness interval and the voltage value of the negative power supply voltage signal.

[0103] A first corresponding relationship between the brightness interval and the voltage value of the negative power supply voltage signal can be predetermined, wherein different brightness intervals can correspond to different voltage values ​​of the negative power supply voltage signal to reduce power consumption. According to the current brightness interval where the target brightness is located and the first corresponding relationship, the target voltage value of the negative power supply voltage signal corresponding to the current brightness interval can be determined.

[0104] In this way, according to the actual brightness to be displayed in each partition, the voltage value of the negative power supply voltage signal received by each partition can be flexibly adjusted, which is conducive to reducing power consumption.

[0105] Figure 8 A circuit diagram of a pixel circuit in a display panel provided in an embodiment of the present application. Figure 8 As shown, according to some embodiments of the present application, optionally, the display panel may further include a first scan signal line S1, a second scan signal line S2, and a second initialization signal line Vref2. The sub-pixel may further include a pixel circuit 70, and the pixel circuit 70 is electrically connected to the first electrode of the light-emitting element D. The pixel circuit 70 may include a driving module 701, a first initialization module 702, and a second initialization module 703. Among them, the control end of the first initialization module 702 is electrically connected to the first scan signal line S1, the first end of the first initialization module 702 is electrically connected to the first initialization signal line Vref, and the second end of the first initialization module 702 is electrically connected to the first electrode of the light-emitting element D. The first initialization module 702 can be turned on under the control of the first scan signal line S1, and the first initialization signal of the first initialization signal line Vref is transmitted to the first electrode of the light-emitting element D to initialize the first electrode of the light-emitting element D.

[0106] The control end of the second initialization module 703 is electrically connected to the second scan signal line S2, the first end of the second initialization module 703 is electrically connected to the second initialization signal line Vref2, and the second end of the second initialization module 703 is electrically connected to the control end of the driving module 701. The second initialization module 703 can be used to transmit the second initialization signal of the second initialization signal line Vref2 to the control end of the driving module 701 to initialize the control end of the driving module 701.

[0107] exist Figure 8 In the illustrated embodiment, the second initialization signal line Vref2 can reuse the first initialization signal line Vref. That is, the first initialization signal line Vref in each partition can be connected to the first initialization module 702 and the second initialization module 703 at the same time, and the first initialization signal provided by the first initialization signal line Vref in each partition can be used to initialize the first electrode of the light-emitting element D and can also be used to initialize the control end of the driving module 701.

[0108] It should be noted that the pixel circuit in the embodiment of the present application is not limited to Figure 8 The pixel circuit shown is applicable to all pixel circuits having a first initialization signal (ie, resetting the first electrode of the light emitting element).

[0109] Continue to see Figure 8 According to some embodiments of the present application, optionally, the pixel circuit 70 may further include a data writing module 704, a threshold compensation module 705, a first light emitting control module 706, a second light emitting control module 707 and a storage capacitor Cst. Each module may include a thin film transistor. For example, the driving module 701 includes a first transistor T1, the first initialization module 702 includes a second transistor T2, the second initialization module 703 includes a third transistor T3, the data writing module 704 includes a fourth transistor T4, the threshold compensation module 705 includes a fifth transistor T5, the first light emitting control module 706 includes a sixth transistor T6, and the second light emitting control module 707 includes a seventh transistor T7. The connection method of each thin film transistor is as follows: Figure 8 As shown, no further details are given here.

[0110] and Figure 8 Different from the illustrated embodiment, according to other embodiments of the present application, optionally, the second initialization signal line Vref2 may not reuse the first initialization signal line Vref, that is, the second initialization signal line Vref2 and the first initialization signal line Vref are different signal lines.

[0111] Fig. 9 This is another circuit diagram of a display panel provided in an embodiment of the present application. Fig. 9As shown, unlike the first initialization signal line Vref arranged in partitions, the second initialization signal line Vref2 can be arranged on the entire surface. Specifically, the second initialization signal line Vref2 connected to the pixel circuits in at least two partitions F is different from the first initialization signal line Vref. The second initialization signal line Vref2 can be electrically connected to the second initialization module 703 of the pixel circuits in multiple partitions F.

[0112] Thus, since the second initialization signal transmitted by the second initialization signal line Vref2 will not affect the cross-voltage of the light-emitting element, the second initialization signal line Vref2 is electrically connected to the second initialization modules 703 of the pixel circuits in the plurality of partitions F, which can facilitate the wiring of the second initialization signal line Vref2.

[0113] Based on the display panel provided in the above embodiment, accordingly, the embodiment of the present application also provides a specific implementation of a display panel driving method. The display panel driving method can be applied to the display panel 10 provided in the above embodiment, please refer to the following embodiments.

[0114] Fig.10 A schematic flow chart of a method for driving a display panel provided in an embodiment of the present application.

[0115] like Fig.10 As shown, the driving method of the display panel may include the following steps:

[0116] S1001, providing different first initialization signals to first electrodes of light-emitting elements in at least two partitions through at least two first initialization signal lines;

[0117] S1002. Provide different first voltage source signals to second electrodes of light-emitting elements in at least two partitions through at least two first voltage source signal lines.

[0118] The specific implementation process of S1001 and S1002 can be found above and will not be repeated here.

[0119] In the driving method of the display panel of the embodiment of the present application, the first initialization signal line and the first power supply voltage signal line are independently set for each partition, and the voltage value of the first initialization signal of each partition can be independently set according to the voltage value of the negative power supply voltage signal of each partition and the initial cross-voltage value corresponding to each partition. In conjunction with the change of the negative power supply voltage signal transmitted by the first power supply voltage signal line, the light-emitting elements in each partition can obtain a suitable initial cross-voltage value, which is beneficial to reducing the difference in initial cross-voltage values ​​and brightness of the light-emitting elements in different partitions.

[0120] Fig.11 1 is a flow chart of S1001 in the method for driving a display panel provided in an embodiment of the present application. Fig.11 As shown, S1001, providing different first initialization signals to first electrodes of light-emitting elements in at least two partitions through at least two first initialization signal lines, specifically may include the following steps S1101 to S1103.

[0121] S1101. For any i-th partition in the display panel, obtain a voltage value of a negative power supply voltage signal provided to the i-th partition and a preset initial cross-voltage value, where i is a positive integer.

[0122] S1102 , determining a voltage value of a first initialization signal transmitted by a first initialization signal line connected to the i-th partition according to a voltage value of a negative power supply voltage signal corresponding to the i-th partition and a preset initial cross-voltage value.

[0123] The initial voltage-crossing value is the voltage difference between the voltage value of the first initialization signal and the voltage value of the negative power supply voltage signal.

[0124] For example, the voltage value of the first initialization signal transmitted by the first initialization signal line Vref connected to the i-th partition may be calculated according to the following expression.

[0125] Vint=A+ELVSS' (1)

[0126] Wherein, Vint represents the voltage value of the first initialization signal transmitted by the first initialization signal line Vref connected to the i-th partition, A represents the preset initial voltage drop, and ELVSS' represents the voltage value of the negative power supply voltage signal corresponding to the i-th partition.

[0127] The initial voltage-to-voltage value A can be predetermined, and the specific value of the initial voltage-to-voltage value A can be flexibly adjusted according to actual conditions, such as flexibly adjusted according to display quality (such as brightness and / or chromaticity uniformity), which is not limited in the present embodiment. After the voltage value ELVSS' of the negative power supply voltage signal is determined, the voltage value Vint of the first initialization signal can be determined.

[0128] S1103 . Based on the determined voltage value of the first initialization signal transmitted by the first initialization signal line corresponding to the i-th partition, provide a first initialization signal of a corresponding voltage value to the first initialization signal line corresponding to the i-th partition.

[0129] According to some embodiments of the present application, optionally, S1101, obtaining a voltage value of a negative power supply voltage signal provided to the i-th partition, may specifically include the following steps 1 and 2.

[0130] Step 1: Obtain the target brightness of the sub-picture to be displayed in the i-th partition, where the target brightness includes the average brightness or the maximum brightness.

[0131] The grayscale to be displayed by each sub-pixel in the ith partition is known, and accordingly, the brightness to be displayed by each sub-pixel in the ith partition can also be determined. For example, there are N sub-pixels in the ith partition, and in step 1, the average value of the brightness to be displayed by the N sub-pixels can be calculated or the maximum value of the brightness to be displayed by the N sub-pixels can be selected as the target brightness of the sub-image to be displayed in the ith partition.

[0132] Step 2: Determine the target voltage value of the negative power supply voltage signal corresponding to the current brightness interval according to the current brightness interval where the target brightness is located and the first corresponding relationship between the brightness interval and the voltage value of the negative power supply voltage signal.

[0133] A first corresponding relationship between the brightness interval and the voltage value of the negative power supply voltage signal can be predetermined, wherein different brightness intervals can correspond to different voltage values ​​of the negative power supply voltage signal to reduce power consumption. According to the current brightness interval where the target brightness is located and the first corresponding relationship, the target voltage value of the negative power supply voltage signal corresponding to the current brightness interval can be determined.

[0134] In this way, according to the actual brightness to be displayed in each partition, the voltage value of the negative power supply voltage signal received by each partition can be flexibly adjusted, which is conducive to reducing power consumption.

[0135] According to some embodiments of the present application, optionally, the brightness range of the partition display can be divided into multiple different brightness intervals. When displaying a complex picture, different partitions may be in different brightness intervals. In order to minimize the initial cross-pressure difference of the light-emitting elements in different partitions, optionally, different brightness intervals can correspond to the same initial cross-pressure value. For example, for example, the brightness range of the partition display is 0~1000nit, and 0~1000nit can be divided into multiple different brightness intervals. For example, 0~100nit is a brightness interval, 101~200nit is a brightness interval, ..., 901~1000nit is a brightness interval. Different brightness intervals can correspond to the same initial cross-pressure value, for example, 0~100nit corresponds to the initial cross-pressure value A, 101~200nit also corresponds to the initial cross-pressure value A, ..., 901~1000nit also corresponds to the initial cross-pressure value A.

[0136] When the partitions are in different brightness ranges, the same initial voltage value A can be used to calculate the voltage value Vint of the first initialization signal.

[0137] Fig.10 and Fig.11 The specific implementation method of each step in the driving method shown has been described in detail in the above product embodiment, which can achieve its corresponding technical effect. For the sake of concise description, it will not be repeated here.

[0138] Based on the display panel provided in the above embodiment, accordingly, the embodiment of the present application further provides a driving module. The driving module can be electrically connected to the display panel 10 provided in the above embodiment, see the following embodiment. Exemplarily, the driving module includes but is not limited to a driving display chip or a power chip.

[0139] Fig.12 A schematic diagram of the structure of the driving module provided in the embodiment of the present application. Fig.12 As shown, the driving module 1200 provided in the embodiment of the present application may include the following units:

[0140] The acquisition unit 1201 is used to acquire, for any i-th partition in the display panel, a voltage value of a negative power supply voltage signal provided to the i-th partition and a preset initial cross-voltage value, where i is a positive integer;

[0141] The calculation unit 1202 is used to determine the voltage value of the first initialization signal transmitted by the first initialization signal line connected to the i-th partition according to the voltage value of the negative power supply voltage signal corresponding to the i-th partition and a preset initial cross-voltage value, wherein the initial cross-voltage value is the voltage difference between the voltage value of the first initialization signal and the voltage value of the negative power supply voltage signal;

[0142] The output unit 1203 is used to provide a first initialization signal of a corresponding voltage value to the first initialization signal line corresponding to the i-th partition based on the determined voltage value of the first initialization signal transmitted by the first initialization signal line corresponding to the i-th partition.

[0143] Specifically, the voltage value of the negative power supply voltage signal provided by the driving module 1200 to each partition is known, and the preset initial cross-voltage value is also known. Therefore, for any i-th partition, the voltage value of the first initialization signal transmitted by the first initialization signal line corresponding to the i-th partition can be determined according to the voltage value of the negative power supply voltage signal corresponding to the i-th partition and the preset initial cross-voltage value.

[0144] In the driving module provided in the embodiment of the present application, the voltage value of the first initialization signal of each partition can be independently set according to the voltage value of the negative power supply voltage signal of each partition and the preset initial cross-voltage value, which can ensure that the light-emitting elements in each partition can obtain the same or similar initial cross-voltage value, which is beneficial to reducing the difference in initial cross-voltage value and brightness of the light-emitting elements in different partitions.

[0145] In some embodiments, the acquisition unit 1201 is specifically used to obtain the target brightness of the sub-screen to be displayed in the i-th partition, where the target brightness includes the average brightness or the maximum brightness; based on the current brightness interval in which the target brightness is located and the first correspondence between the brightness interval and the voltage value of the negative power supply voltage signal, the target voltage value of the negative power supply voltage signal corresponding to the current brightness interval is determined.

[0146] Based on the display panel and / or driving module provided in the above embodiments, the present application also provides a display device, including the display panel and / or driving module provided in the present application. Fig.13 , Fig.13 A schematic diagram of the structure of a display device provided in an embodiment of the present application. Fig.13 The provided display device 1000 includes the display panel 10 and / or the driving module 1200 provided in any one of the above embodiments of the present application. Fig.13 In the embodiment, a mobile phone is used as an example to illustrate the display device 1000. It can be understood that the display device provided in the embodiment of the present application can be a wearable product, a computer, a television, a car display device, or other display devices with display functions, and the present application does not impose specific restrictions on this. The display device provided in the embodiment of the present application has the beneficial effects of the display panel 10 provided in the embodiment of the present application. For details, please refer to the specific description of the display panel 10 in the above embodiments, and this embodiment will not be repeated here.

[0147] It should be understood that the specific structure of the circuit and the cross-sectional structure of the display panel provided in the drawings of the embodiments of the present application are only some examples and are not used to limit the present application. In addition, the above embodiments provided by the present application can be combined with each other if there is no contradiction.

[0148] It should be clear that each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. According to the embodiments described above in this application, these embodiments do not describe all the details in detail, nor do they limit the application to only the specific embodiments described. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that technicians in the relevant technical field can make good use of the application and the modified use based on the application. The application is only limited by the claims and their full scope and equivalents.

[0149] Those skilled in the art should understand that the above embodiments are exemplary rather than restrictive. Different technical features appearing in different embodiments can be combined to achieve beneficial effects. Based on the study of the drawings, the specification and the claims, those skilled in the art should be able to understand and implement other variations of the disclosed embodiments. In the claims, the term "comprising" does not exclude other structures; the quantity involves "one" but does not exclude multiple; the terms "first" and "second" are used to indicate names rather than to indicate any specific order. Any figure marks in the claims should not be understood as limiting the scope of protection. The appearance of certain technical features in different dependent claims does not mean that these technical features cannot be combined to achieve beneficial effects.

Claims

1. A display panel, characterized in that: The display panel includes at least two partitions, at least two first power supply voltage signal lines and at least two first initialization signal lines, one partition includes at least one sub-pixel, and the sub-pixel includes a light-emitting element; The first electrodes of the light-emitting elements in at least two of the partitions are connected to different first initialization signal lines, the second electrodes of the light-emitting elements in at least two of the partitions are insulated from each other, and the second electrodes of the light-emitting elements in at least two of the partitions are connected to different first power supply voltage signal lines, the first initialization signal line is used to transmit a first initialization signal for initializing the first electrode of the light-emitting element, and the first power supply voltage signal line is used to transmit a negative power supply voltage signal.

2. The display panel according to claim 1, characterized in that: The at least two partitions include a first partition and a second partition, the first power supply voltage signal line corresponding to the first partition provides a negative power supply voltage signal of a first voltage value, and the first initialization signal line corresponding to the first partition provides a first initialization signal of a second voltage value; The first power supply voltage signal line corresponding to the second partition provides a negative power supply voltage signal with a third voltage value, and the first initialization signal line corresponding to the second partition provides a first initialization signal with a fourth voltage value; Wherein, the first voltage value is different from the third voltage value, and the second voltage value is different from the fourth voltage value; Preferably, the difference between the first voltage value and the second voltage value is a first difference, the difference between the third voltage value and the fourth voltage value is a second difference, and the difference between the first difference and the second difference is less than a preset threshold.

3. The display panel according to claim 1, characterized in that: The first electrodes of the light emitting elements in the same partition are connected to the same first initialization signal line, and the second electrodes of the light emitting elements in the same partition are connected to the same first power supply voltage signal line; Preferably, the display panel comprises a display area and a non-display area, the first initialization signal line comprises a first sub-initialization signal line located in the display area and a second sub-initialization signal line located in the non-display area, the first electrodes of the light-emitting elements in at least two of the subareas are connected to different first sub-initialization signal lines, and different first sub-initialization signal lines are connected to different second sub-initialization signal lines; Preferably, the first sub-initialization signal line connected to the first electrode of the light-emitting element in the same partition includes a first routing portion extending along a first direction and a second routing portion extending along a second direction, and the first routing portion is electrically connected to the second routing portion; Preferably, the first sub-initialization signal line connected to the first electrode of the light-emitting element in the same partition includes a plurality of the first routing portions and a plurality of the second routing portions, and the plurality of the first routing portions and the plurality of the second routing portions are cross-connected to form a mesh structure; Preferably, along the thickness direction of the display panel, the area formed by the orthographic projection of the mesh structure includes first electrodes corresponding to N light-emitting elements in the partition, 1≤N≤M, M represents the number of the light-emitting elements in the partition corresponding to the mesh structure, and N and M are both positive integers; Preferably, N=1; Preferably, the first sub-initialization signal line connected to the first electrode of the light-emitting element in the same partition includes a plurality of the first routing portions and a second routing portion, and the plurality of the first routing portions and the second routing portion are connected to form a comb-shaped structure; Preferably, the display panel further comprises a plurality of first pads, different second sub-initialization signal lines are connected to different first pads, different first pads are electrically connected to different first initialization signal output terminals of the driving module, and the first initialization signal output terminals are used to provide the first initialization signal; Preferably, the non-display area includes a first non-display area and a second non-display area opposite to each other and a third non-display area and a fourth non-display area opposite to each other, the first non-display area, the display area and the second non-display area are sequentially arranged along a column direction of the display panel, the third non-display area, the display area and the fourth non-display area are sequentially arranged along a row direction of the display panel, and the column direction intersects the row direction; The first pad is located in the second non-display area and is electrically connected to the first initialization signal output terminal of the driving module. The second sub-initialization signal line is located in the third non-display area and / or the fourth non-display area and extends to the first pad.

4. The display panel according to claim 3, characterized in that: Along the thickness direction of the display panel, the display panel includes a substrate, a first metal layer, a second metal layer, a third metal layer, a fourth metal layer, and an insulating layer between any two adjacent metal layers; One of the first routing portion and the second routing portion is located in the second metal layer, and the other is located in the third metal layer or the fourth metal layer.

5. The display panel according to claim 1, characterized in that: For any i-th partition in the display panel, a voltage value of a first initialization signal transmitted by a first initialization signal line connected to the i-th partition is determined according to a voltage value of a negative power supply voltage signal transmitted by a first power supply voltage signal line connected to the i-th partition and a preset initial cross-voltage value, and the initial cross-voltage value is a voltage difference between a voltage value of the first initialization signal and a voltage value of the negative power supply voltage signal, where i is a positive integer; Preferably, different partitions correspond to the same initial cross-pressure value; Preferably, the initial voltage span value is greater than 0V.

6. The display panel according to claim 1, characterized in that: The display panel further includes a first scanning signal line, a second scanning signal line, and a second initialization signal line. The sub-pixel further includes a pixel circuit, which is electrically connected to the first electrode of the light-emitting element. The pixel circuit includes: Driver module; a first initialization module, wherein a control end of the first initialization module is electrically connected to the first scanning signal line, a first end of the first initialization module is electrically connected to the first initialization signal line, and a second end of the first initialization module is electrically connected to the first electrode of the light-emitting element; a second initialization module, wherein the control end of the second initialization module is electrically connected to the second scanning signal line, the first end of the second initialization module is electrically connected to the second initialization signal line, the second end of the second initialization module is electrically connected to the control end of the driving module, and the second initialization module is used to transmit the second initialization signal of the second initialization signal line to the control end of the driving module to initialize the control end of the driving module; The second initialization signal line reuses the first initialization signal line, or the second initialization signal line connected to the pixel circuits in at least two of the partitions is different from the first initialization signal line.

7. A method for driving a display panel, characterized in that: Applied to the display panel according to any one of claims 1 to 6, the driving method comprises: providing different first initialization signals to the first electrodes of the light emitting elements in at least two partitions through at least two first initialization signal lines; Different first voltage source signals are provided to the second electrodes of the light emitting elements in at least two subareas through at least two first voltage source signal lines.

8. The driving method according to claim 7, characterized in that: The providing different first initialization signals to the first electrodes of the light emitting elements in at least two partitions through at least two first initialization signal lines comprises: For any i-th partition in the display panel, obtaining a voltage value of a negative power supply voltage signal provided to the i-th partition and a preset initial cross-voltage value, where i is a positive integer; Determine, according to the voltage value of the negative power supply voltage signal corresponding to the i-th partition and the preset initial cross-voltage value, the voltage value of the first initialization signal transmitted by the first initialization signal line corresponding to the i-th partition, wherein the initial cross-voltage value is the voltage difference between the voltage value of the first initialization signal and the voltage value of the negative power supply voltage signal; Based on the determined voltage value of the first initialization signal transmitted by the first initialization signal line corresponding to the i-th partition, providing a first initialization signal of a corresponding voltage value to the first initialization signal line corresponding to the i-th partition; Preferably, different partitions correspond to the same initial cross-pressure value.

9. A driving module, characterized in that: The driving module is electrically connected to the display panel according to any one of claims 1 to 6, and comprises: An acquisition unit, configured to acquire, for any i-th partition in the display panel, a voltage value of a negative power supply voltage signal provided to the i-th partition and a preset initial cross-voltage value, where i is a positive integer; a calculation unit, configured to determine, according to the voltage value of the negative power supply voltage signal corresponding to the i-th partition and the preset initial cross-voltage value, a voltage value of a first initialization signal transmitted by a first initialization signal line connected to the i-th partition, wherein the initial cross-voltage value is a voltage difference between the voltage value of the first initialization signal and the voltage value of the negative power supply voltage signal; The output unit is used to provide a first initialization signal of a corresponding voltage value to the first initialization signal line corresponding to the i-th partition based on the determined voltage value of the first initialization signal transmitted by the first initialization signal line corresponding to the i-th partition.

10. A display device, characterized in that: It comprises the display panel according to any one of claims 1 to 6 and / or the driving module according to claim 9.

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