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

Abstract

Embodiments of the present application provide a display panel, a driving method and a driving module thereof, and a display device. The display panel comprises at least two partitions, at least two first power 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 electrodes of the light emitting elements in the at least two partitions are connected to different first initialization signal lines. The second electrodes of the light emitting elements in the at least two partitions are insulated from each other. The second electrodes of the light emitting elements in the at least two partitions are connected to different first power voltage signal lines. The first initialization signal lines are used to transmit first initialization signals for initializing the first electrodes of the light emitting elements. The first power voltage signal lines are used to transmit negative power voltage signals. The embodiments of the present application are beneficial to reducing the initial cross-voltage difference and the brightness difference of the light emitting elements in different partitions.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of display, and particularly relates to a display panel and a driving method, a driving module and a display device thereof. BACKGROUND

[0002] With the continuous development of display technology, the application range of display panels is more and more extensive, and the requirements for display panels are also higher and higher. The present inventor has found that the initial cross-voltage values of the light emitting elements in different regions of some display panels are quite different, resulting in a large difference in brightness of different regions. SUMMARY

[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 lines between different partitions, and are beneficial to reducing the initial cross-voltage value difference and the brightness difference of the light emitting elements in different partitions.

[0004] In a first aspect, the embodiments of the present application provide a display panel, which comprises at least two partitions, at least two first power 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 electrodes of the light emitting elements in the at least two partitions are connected to different first initialization signal lines, the second electrodes of the light emitting elements in the at least two partitions are insulated from each other, the second electrodes of the light emitting elements in the at least two partitions are connected to different first power voltage signal lines, the first initialization signal lines are used to transmit first initialization signals for initializing the first electrodes of the light emitting elements, and the first power voltage signal lines are used to transmit first power voltage signals.

[0005] According to the embodiments of the first aspect of the present application, the at least two partitions comprise a first partition and a second partition. The first partition is provided with a negative power voltage signal of a first voltage value corresponding to the connected first power voltage signal line, and the first partition is provided with a first initialization signal of a second voltage value corresponding to the connected first initialization signal line. The second partition is provided with a negative power voltage signal of a third voltage value corresponding to the connected first power voltage signal line, and the second partition is provided with a first initialization signal of a fourth voltage value corresponding to the connected first initialization signal line. 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 one of the preceding 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 value.

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

[0008] In this way, the first electrodes of the light emitting elements in the same subregion are connected to the same first initialization signal line, and the second electrodes of the light emitting elements in the same subregion are connected to the same first power voltage signal line, which can reduce the number of first initialization signal lines and first power voltage signal lines in the display panel, facilitate wiring design, and save production costs.

[0009] According to the first aspect of the present application, in any of the foregoing embodiments, the display panel comprises a display region and a non-display region, the first initialization signal line comprises a first sub-initialization signal line located in the display region and a second sub-initialization signal line located in the non-display region, and the first electrodes of the light emitting elements in at least two subregions 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 the first aspect of the present application, in any of the foregoing embodiments, the first sub-initialization signal line to which the first electrodes of the light emitting elements in the same subregion are connected comprises a first wire portion extending in a first direction and a second wire portion extending in a second direction, and the first wire portion is electrically connected to the second wire portion.

[0011] According to the first aspect of the present application, in any of the foregoing embodiments, the first sub-initialization signal line to which the first electrodes of the light emitting elements in the same subregion are connected comprises a plurality of first wire portions and a plurality of second wire portions, and the plurality of first wire portions and the plurality of second wire portions are cross-connected to form a mesh structure.

[0012] According to the first aspect of the present application, in any of the foregoing embodiments, in the thickness direction of the display panel, the area formed by the orthogonal projection of the mesh structure comprises the first electrodes of N light emitting elements in the corresponding subregion, 1≤N≤M, M represents the number of light emitting elements in the corresponding subregion of the mesh structure, and N and M are positive integers.

[0013] According to the first aspect of the present application, in any of the foregoing embodiments, N=1.

[0014] According to the first aspect of the present application, in any of the foregoing embodiments, the first sub-initialization signal line to which the first electrodes of the light emitting elements in the same subregion are connected comprises a plurality of first wire portions and a second wire portion, and the plurality of first wire portions and the second wire portion are connected to form a comb structure.

[0015] According to any one of the foregoing embodiments of the first aspect of the present application, the display panel further comprises a plurality of first pads, different second sub-initialization signal lines are connected to different first pads, and different first pads are electrically connected to different first initialization signal output ends of the driving module, and the first initialization signal output end is configured to provide a first initialization signal.

[0016] According to any one of the foregoing embodiments of the first aspect of the present application, the non-display area comprises opposite first and second non-display areas and opposite third and fourth non-display areas, the first non-display area, the display area, and the second non-display area are arranged in sequence along a 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 a row direction of the display panel, and the column direction and the row direction intersect; the first pad is located in the second non-display area and is electrically connected to the first initialization signal output end 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 pad.

[0017] According to any one of the foregoing embodiments of the first aspect of the present application, in a thickness direction of the display panel, the display panel comprises 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 and second wiring portions is located in the second metal layer, and the other is located in the third or fourth metal layer.

[0018] According to any one of the foregoing embodiments of the first aspect of the present application, for any ith sub-area in the display panel, a voltage value of a first initialization signal transmitted by a first initialization signal line corresponding to the ith sub-area is determined according to a voltage value of a first power voltage signal transmitted by a first power voltage signal line corresponding to the ith sub-area and a preset initial cross voltage value, the initial cross voltage value is a voltage difference between the voltage value of the first initialization signal and the voltage value of the first power voltage signal, and i is a positive integer.

[0019] According to any one of the foregoing embodiments of the first aspect of the present application, different sub-areas correspond to the same initial cross voltage value.

[0020] According to any one of the foregoing embodiments of the first aspect of the present application, the initial cross voltage value is greater than 0V.

[0021] According to any one of the foregoing embodiments of the first aspect of the present application, the display panel further comprises a first scan signal line, a second scan signal line, and a second initialization signal line, and the sub-pixel further comprises a pixel circuit electrically connected to the first electrode of the light-emitting element, the pixel circuit comprising: a driving module; a first initialization module, a control end of the first initialization module being electrically connected to the first scan signal line, a first end of the first initialization module being electrically connected to the first initialization signal line, and a second end of the first initialization module being electrically connected to the first electrode of the light-emitting element; and a second initialization module, a control end of the second initialization module being electrically connected to the second scan signal line, a first end of the second initialization module being electrically connected to the second initialization signal line, and a second end of the second initialization module being electrically connected to the control end of the driving module, the second initialization module being configured 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 is multiplexed with the first initialization signal line, or the second initialization signal lines connected to the pixel circuits in at least two partitions are different from the first initialization signal line.

[0022] In a second aspect, the embodiments of the present application provide a driving method of a display panel, applied to the display panel provided in the first aspect, the driving method comprising: providing different first initialization signals to the first electrodes of the light-emitting elements in the at least two partitions through the at least two first initialization signal lines; and providing different first power voltage signals to the second electrodes of the light-emitting elements in the at least two partitions through the at least two first power voltage signal lines.

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

[0024] According to any one of the foregoing embodiments of the second aspect of the present application, the different partitions correspond to the same initial cross-voltage value.

[0025] In a third aspect, an embodiment of the present application provides a driving module, the driving module being electrically connected with the display panel of the first aspect, and the driving module comprising: an acquisition unit, configured to acquire, for any ith subregion in the display panel, a voltage value of a first power voltage signal provided to the ith subregion and a preset initial cross voltage value, i being a positive integer; a calculation unit, configured to determine, according to the voltage value of the first power voltage signal corresponding to the ith subregion and the preset initial cross voltage value, a voltage value of a first initialization signal transmitted by a first initialization signal line corresponding to the ith subregion, the initial cross voltage value being a voltage difference between the voltage value of the first initialization signal and the voltage value of the first power voltage signal; and an output unit, configured to provide, based on the determined voltage value of the first initialization signal transmitted by the first initialization signal line corresponding to the ith subregion, the first initialization signal with a corresponding voltage value to the first initialization signal line corresponding to the ith subregion.

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

[0027] The display panel, the driving method thereof, the driving module, and the display device provided in the embodiments of the present application have the following beneficial effects. The display panel comprises at least two subregions, at least two first power voltage signal lines, and at least two first initialization signal lines, one subregion comprises at least one subpixel, and the subpixel comprises a light emitting element. The first initialization signal lines to which the first electrodes of the light emitting elements in the at least two subregions are connected are different, the second electrodes of the light emitting elements in the at least two subregions are insulated from each other, the first power voltage signal lines to which the second electrodes of the light emitting elements in the at least two subregions are connected are different, the first initialization signal lines are used to transmit first initialization signals for initializing the first electrodes of the light emitting elements, and the first power voltage signal lines are used to transmit first power voltage signals. In the embodiments of the present application, the first initialization signal lines and the first power voltage signal lines are both independently set for the subregions, thereby facilitating independent setting of the first initialization signals between different subregions, cooperating with changes of the first power voltage signals transmitted by the first power voltage signal lines, and enabling the light emitting elements in each subregion to obtain a suitable initial cross voltage value, thereby facilitating reduction of initial cross voltage value differences and brightness differences of the light emitting elements in different subregions. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0029] Figure 1 A structural schematic diagram of the display panel provided in the embodiments of the present application;

[0030] Figure 2 Another structural schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 6B.

[0031] Figure 3 Another structural schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 6B.

[0032] Figure 4 Another structural schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 6B.

[0033] Figure 5 Another structural schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 6B.

[0034] Figure 6 Another structural schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 6B.

[0035] Figure 7 Another structural schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 6B.

[0036] Figure 8 Another structural schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 6B.

[0037] Figure 9 Another structural schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 6B.

[0038] Figure 10 Another structural schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 6B.

[0039] Figure 11 Another structural schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 6B.

[0040] Figure 12 Another structural schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 6B.

[0041] Figure 13 Another structural schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 6B. DETAILED DESCRIPTION

[0042] The features and exemplary embodiments of various aspects of the present application will be described in detail below with reference to the drawings. The following detailed description is merely intended to explain the present application, and is not intended to limit the present application. The present application can be implemented without some of the specific details, which are well known to those skilled in the art. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application.

[0043] It should be noted that the relative terms, such as first and second, and the like are used herein only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between such entities or operations. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... " does not, without more limitations, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0044] It should be understood that the term "and / or" used herein only describes an association relationship of associated objects, which means that there can be three relationships, for example, A and / or B can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0045] It should be noted that the transistors in the embodiments of the present application can be N-type transistors or P-type transistors. For an N-type transistor, the on level is high and the off level is low. That is, when the gate of the N-type transistor is high, the first pole and the second pole are turned on, and when the gate of the N-type transistor is low, the first pole and the second pole are turned off. For a P-type transistor, the on level is low and the off level is high. That is, when the control pole of the P-type transistor is low, the first pole and the second pole are turned on, and when the control end of the P-type transistor is high, the first pole and the second pole are turned off. In specific implementation, the gate of each transistor is used as its control pole, and according to the signal of the gate of each transistor and its type, the first pole can be used as the source pole and the second pole as the drain pole, or the first pole can be used as the drain pole and the second pole as the source pole, which is not distinguished here. In addition, the on level and the off level in the embodiments of the present application are generic, 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" can mean that two components are directly electrically connected, or that two components are electrically connected via one or more other components.

[0047] Various modifications and changes can be made to the application hereof without departing from the spirit and scope thereof. It is intended, therefore, to cover all modifications and changes as fall within the scope of the claims (technical solutions claimed) and their equivalents. It should be noted that the embodiments provided by the present application can be combined with each other if not contrary.

[0048] Before the technical solutions provided by the embodiments of the present application are described, the problems existing in the related art are first described in detail to facilitate the understanding of the embodiments of the present application.

[0049] With the continuous development of display technology, the application range 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 first power voltage signal (i.e. ELVSS signal) partition control by using auxiliary cathode patterning. The voltage value of the first power voltage signal in each partition can be reasonably obtained 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 the first power voltage signal, and the other end receives the initialization voltage signal (i.e. Vref signal). The initial cross voltage value between 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 first power voltage signal. Since the voltage values of the first power voltage signals of different partitions are different, when the voltage value of the initialization voltage signal is the same, the initial cross voltage value between the two ends of the light emitting element will have obvious difference, which further causes the brightness difference of different regions to be large. Especially at low gray scale, the brightness difference of different regions 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, a driving module and a display device thereof, 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 voltage signal line are both independently set in partitions, thereby facilitating the independent setting of the first initialization signal between different partitions, cooperating with the change of the first power voltage signal transmitted by the first power voltage signal line, and the light emitting element in each partition can obtain a suitable initial cross voltage value, which is conducive to reducing the initial cross voltage value difference and brightness difference of the light emitting elements in different partitions.

[0053] First, the display panel provided by the embodiments of the present application is introduced.

[0054] Figure 1 A structural schematic diagram of the display panel provided by the embodiments of the present application. As shown in FIG. 1, the display panel comprises a substrate 1, a first initialization signal line 2, a first power voltage signal line 3, a plurality of light emitting elements 4, and a plurality of auxiliary cathodes 5. Figure 1As shown, the display panel 10 provided by the embodiment of the present application can include at least two partitions F, at least two first power voltage signal lines ELVSS, and at least two first initialization signal lines Vref. The number of partitions F in the display panel 10 can be flexibly adjusted according to actual conditions, which is not limited in the embodiment of the present application. In some examples, one partition F can correspond to one first power voltage signal line ELVSS, and one partition F can correspond to one first initialization signal line Vref, so as to realize the partition setting of the first power voltage signal line ELVSS and the first initialization signal line Vref.

[0055] One partition F can include at least one sub-pixel, and the sub-pixel can include a light emitting element D. The number of sub-pixels in the partition F can be flexibly adjusted according to actual conditions, which is not limited in the embodiment of the present application. For example, the light emitting element D includes but is not limited to an organic light emitting diode (OLED). The first initialization signal line Vref can be electrically connected with a first electrode of the light emitting element D, and the first initialization signal line Vref can be used to transmit a first initialization signal for initializing the first electrode of the light emitting element D. The first power voltage signal line ELVSS can be electrically connected with a second electrode of the light emitting element D, and the first power voltage signal line ELVSS can be used to transmit a first power voltage signal. For example, the first electrode of the light emitting element D can be an anode of the light emitting element D, and the second electrode of the light emitting element D can be a 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 initialization signal lines Vref to which the first electrodes of the light emitting elements D in the at least two partitions F are connected are different. The second electrodes of the light emitting elements D in at least two partitions F are insulated from each other, that is, not electrically connected with each other. For example, in some examples, the display panel can be provided with an isolation structure, which can be located between the light emitting elements D in different partitions F, and used to isolate the second electrodes of the light emitting elements D in different partitions F. The first power voltage signal lines ELVSS to which the second electrodes of the light emitting elements D in the at least two partitions F are connected are different.

[0057] Since the first power supply voltage signal line ELVSS connected to different partitions F can be different, the voltage value of the first power supply voltage signal received by the light-emitting element D in different partitions F can be flexibly set according to the different partitions. Similarly, since the first initialization signal line Vref connected to different partitions F can be different, the voltage value of the first initialization signal received by the light-emitting element D in different partitions F can also be flexibly set according to the different partitions. For example, for partition F with a larger first power supply voltage signal value, the voltage value of the first initialization signal received can also be set to be larger. For partition F with a smaller first power supply voltage signal value, the voltage value of the first initialization signal received can also be set to be smaller. This helps to reduce the difference in the initial voltage across the light-emitting elements in different partitions, and thus helps to reduce the difference in brightness between the light-emitting elements in different partitions.

[0058] The display panel of this application embodiment includes at least two partitions, at least two first power supply voltage signal lines, and at least two first initialization signal lines. Each 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 the at least two partitions are connected to different first initialization signal lines, the second electrodes of the light-emitting elements in the at least two partitions are mutually insulated, and the second electrodes of the light-emitting elements in the at least two partitions are connected to different first power supply voltage signal lines. The first initialization signal lines are used to transmit a first initialization signal to initialize the first electrodes of the light-emitting elements, and the first power supply voltage signal lines are used to transmit a first power supply voltage signal. In this application embodiment, the first initialization signal lines and the first power supply voltage signal lines are independently set for each partition, which is beneficial to achieve independent setting of the first initialization signal in different partitions. With the change of the first 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 voltage value, which is beneficial to reduce the difference in the initial voltage value and brightness of the light-emitting elements in different partitions.

[0059] Figure 2 This is a schematic diagram of a display panel provided in an embodiment of this application. Figure 2 As shown, according to some embodiments of this application, optionally, at least two partitions F may include a first partition F1 and a second partition F2. Wherein, the first partition F1 and the second partition F2 are arbitrarily different partitions F. The first power supply voltage signal line ELVSS connected to the first partition F1 can provide a negative power supply voltage signal with a first voltage value, and the first initialization signal line Vref connected to the first partition F1 can provide a first initialization signal with a second voltage value. The specific magnitudes of the first voltage value and the second voltage value can be flexibly set according to actual conditions, and this application embodiment does not limit this.

[0060] The second sub-area F2 corresponds to the first power voltage signal line ELVSS to provide a negative power voltage signal of a third voltage value, and the second sub-area F2 corresponds to the first initialization signal line Vref to provide a first initialization signal of a fourth voltage value. The specific sizes of the third voltage value and the fourth voltage value can be flexibly set according to actual conditions, and the embodiments of the present application do 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 voltage signal line ELVSS corresponding to the first sub-area F1 and the first power voltage signal line ELVSS corresponding to the second sub-area F2 can provide a first power voltage signal of different voltage values, that is, a negative power voltage signal. The first power voltage signal is a negative power voltage signal. Correspondingly, the first initialization signal line Vref corresponding to the first sub-area F1 and the first initialization signal line Vref corresponding to the second sub-area F2 can provide a first initialization signal of different voltage values.

[0063] For example, when the voltage value of the first power voltage signal transmitted by the first power voltage signal line ELVSS corresponding to the first sub-area F1 is greater than the voltage value of the first power voltage signal transmitted by the first power voltage signal line ELVSS corresponding to the second sub-area F2, the voltage value of the first initialization signal transmitted by the first initialization signal line Vref corresponding to the first sub-area F1 can also be greater than the voltage value of the first initialization signal transmitted by the first initialization signal line Vref corresponding to the second sub-area F2. In this way, it is beneficial to reduce the initial cross-voltage value difference of the light emitting elements in different sub-areas, and further beneficial to reduce the brightness difference of the light emitting elements in different sub-areas.

[0064] In some specific embodiments, optionally, the difference between the first voltage value and the second voltage value is a first difference, that is, the initial cross-voltage value of the light emitting element in the first sub-area F1 is the absolute value of the first difference, and the difference between the third voltage value and the fourth voltage value is a second difference, that is, the initial cross-voltage value of the light emitting element in the second sub-area 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 sub-area F1 and the initial cross-voltage value of the light emitting element in the second sub-area F2. 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 sub-area F1 and the initial cross-voltage value of the light emitting element in the second sub-area F2 can be equal, thereby greatly reducing the initial cross-voltage value difference and the brightness difference of the light emitting elements in different sub-areas.

[0066] See also Figure 2 As shown, according to some embodiments of this application, optionally, the first electrode of the light-emitting element D in the same partition F can be connected to the same first initialization signal line Vref, and the second electrode of the light-emitting element D in the same partition F can be connected to the same first power supply voltage signal line ELVSS.

[0067] That is, the first electrode of the light-emitting element D in the same partition F can receive the first initialization signal with the same voltage value, and the second electrode of the light-emitting element D in the same partition F can receive the first 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 for wiring design and saves production costs.

[0069] Figure 3 This is a circuit diagram of a display panel provided in an embodiment of this application. Figure 3 As shown, according to some embodiments of this 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 multiple 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 in the figure). The first initialization signal output terminal is used to provide a first initialization signal. Exemplarily, the driving module includes, but is not limited to, driving a display chip or a power supply chip.

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

[0072] Figure 3 For example, the display panel includes three partitions F (i.e., the partition F1', the partition F2', and the partition F3'), as shown in Figure 3 As shown, the first sub initialization signal line V1 can include the first sub initialization signal line V1-1, the first sub initialization signal line V1-2, and the first sub initialization signal line V1-3, and the second sub initialization signal line V2 can include 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, corresponding to the three partitions. The first pad P can include the first pad P1, the first pad P2, and the first pad P3. The first pad P1, the first pad P2, and the first pad P3 can be connected to different first initialization signal output ends.

[0073] The first electrode of the light emitting element D in the partition F1' can be connected to the first sub initialization signal line V1-1, and the first sub initialization signal line V1-1 can 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' can be connected to the first sub initialization signal line V1-2, and the first sub initialization signal line V1-2 can 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' can be connected to the first sub initialization signal line V1-3, and the first sub initialization signal line V1-3 can 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 the first initialization signals with 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 the first initialization signals with different voltage values to the partition F1', the partition F2', and the partition F3'.

[0075] Continuing to refer to Figure 3According to some embodiments of this application, optionally, the non-display area NA may include a first non-display area NA1 and a second non-display area NA2, as well as a third non-display area NA3 and a fourth non-display area NA4. The first non-display area NA1, the display area NA1, and the second non-display area NA2 may be arranged sequentially along the column direction W1 of the display panel, and the third non-display area NA3, the display area NA1, and the fourth non-display area NA4 may be arranged sequentially along the row direction W2 of the display panel, with the column direction W1 intersecting the row direction W2. In some examples, the first non-display area NA1 may be the top border, the second non-display area NA2 may be the bottom border, the third non-display area NA3 may be the left border, and the fourth non-display area NA4 may be the right border.

[0076] The first pad P can be located in the second non-display area NA2 and electrically connected to the first initialization signal output terminal of the driver module. The second sub-initialization signal line V2 can 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 can be connected to two second sub-initialization signal lines V2, which can 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 can be connected to one second sub-initialization signal line V2, which can be located in either the third non-display area NA3 or the fourth non-display area NA4.

[0077] Figure 4 Another circuit diagram of the display panel provided in an embodiment of this application. For example... Figure 4 As shown, according to some embodiments of this 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 trace portion Z1 extending along a first direction X and a second trace portion Z2 extending along a second direction Y, wherein the first trace portion Z1 and the second trace portion Z2 are electrically connected. 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; this embodiment of the application does not limit this.

[0078] See also Figure 4 According to some embodiments of this 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 traces Z1 and multiple second traces Z2, which are cross-connected to form a mesh structure.

[0079] Thus, since the plurality of first wiring portions Z1 and the plurality of second wiring portions Z2 are cross-connected to form the mesh structure, the wiring impedance of the first sub-initialization signal line V1 and the first initialization signal line Vref is greatly reduced, so that the voltage value of the first initialization signal received by the light emitting elements D in the same sub-region F is ensured to be the same or similar, and the initial cross voltage value of the light emitting elements D in the same sub-region F is ensured to be the same or similar.

[0080] Continuing to refer to 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 the dashed area Q shown in Figure 4 ) includes the first electrodes of the N light emitting elements in the corresponding sub-region F, 1≤N≤M, M represents the number of light emitting elements in the corresponding sub-region of the mesh structure, and N and M are both positive integers.

[0081] Figure 4 Taking an example of a sub-region including 6 light emitting elements, that is, M=6, as shown in Figure 4 , the area formed by the orthographic projection of the mesh structure (such as the dashed area Q shown in Figure 4 ) can include the first electrodes of 1 light emitting element in the corresponding sub-region F, that is, N=1, in other words, the first electrodes of each light emitting element D can have the first wiring portion Z1 and / or the second wiring portion Z2 around (such as up, down, left and right).

[0082] Figure 5 Another circuit schematic diagram of a display panel provided by embodiments of the present application is shown in Figure 5 , according to some other embodiments of the present application, still taking an example of a sub-region including 6 light emitting elements, the area formed by the orthographic projection of the mesh structure (such as the dashed area Q shown in Figure 5 ) can include the first electrodes of a plurality of light emitting elements (such as 3 light emitting elements) in the corresponding sub-region F, that is, N

[0083] In order to better reduce the wiring impedance of the first sub-initialization signal line V1, in some specific examples, the mesh structure shown in Figure 4 may surround the first electrodes of 1 light emitting element in the corresponding sub-region F, that is, N=1, so as to increase the number of the first wiring portion Z1 and / or the second wiring portion Z2 in the first sub-initialization signal line V1, and reduce the wiring impedance of the first sub-initialization signal line V1 as much as possible.

[0084] Figure 6 Another circuit schematic diagram of a display panel provided by embodiments of the present application is shown in Figure 6 , compared with Figure 4The difference between the embodiments shown is that, according to some other embodiments of the present application, the first sub-initialization signal line V1 to which the first electrodes of the light emitting elements D in the same partition F are connected can alternatively include a plurality of first wiring portions Z1 and a second wiring portion Z2, and the plurality of first wiring portions Z1 and the second wiring portion Z2 are connected to form a comb-shaped structure. The so-called comb-shaped structure can be understood as a shape similar to a comb, and the second wiring portion Z2 can be regarded as a "comb handle", and the plurality of first wiring portions Z1 can be regarded as "comb teeth". For example, as shown in Figure 6 When the first sub-initialization signal line V1 can include two first wiring portions Z1 and a second wiring portion Z2, the comb-shaped structure has the shape of a capital letter "F", that is, it includes one "comb handle" and two "comb teeth".

[0085] Thus, since the plurality of first wiring portions Z1 and the second wiring portion Z2 are connected to form a comb-shaped structure, the wiring 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 cross-voltage values of the light emitting elements D in the same partition F are the same or similar.

[0086] Figure 7 A partial cross-sectional schematic view of a display panel provided by an embodiment of the present application is shown in Figure 7 As shown, according to some embodiments of the present application, along the thickness direction Z of the display panel 10, the display panel 10 can 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 can be a flexible substrate or a rigid substrate, and the embodiments of the present application do not limit this. In some examples, the first metal layer M1 can be used to form the gate of a transistor, the second metal layer M2 can be used to form the plate of a capacitor, and the third metal layer M3 can be used to form the connection structure of the source and drain of a transistor. Along the thickness direction Z of the display panel, the fourth metal layer M4 is away from the side of the third metal layer M3, and the display panel further includes an anode layer RE. The first electrode of the light emitting element can be located in the anode layer RE.

[0087] In combination with Figure 4 and Figure 7As shown, one of the first trace part Z1 and the second trace part Z2 can be located at the second metal layer M2, and the other one is located at the third metal layer M3 or the fourth metal layer M4. For example, the first trace part Z1 is located at the second metal layer M2, and the second trace part Z2 is located at the third metal layer M3 or the fourth metal layer M4. For another example, the second trace part Z2 is located at the second metal layer M2, and the first trace part Z1 is located at the third metal layer M3 or the fourth metal layer M4. The first trace part Z1 and the second trace part Z2 are connected through a via.

[0088] In this way, by arranging the first trace part Z1 and the second trace part Z2 through at least two metal layers, the first sub-initialization signal line V1 in a mesh structure or a comb structure can be formed, which is conducive to greatly reducing the trace impedance of the first sub-initialization signal line V1 and the first initialization signal line Vref, and ensuring that the voltage values of the first initialization signals received by the light emitting elements D in the same sub-region F are the same or similar, and the initial cross voltage values of the light emitting elements D in the same sub-region F are the same or similar.

[0089] Continuing to refer to Figure 7 As shown, according to some embodiments of the present application, the display panel 10 can be provided with an isolation structure 501, and the isolation structures 501 of different sub-regions are insulated from each other, and the isolation structure 501 can be used at least for isolating the second electrode SE of the light emitting element. That is, the second electrodes SE of the light emitting elements of different sub-regions can be insulated from each other.

[0090] According to some embodiments of the present application, the voltage value of the first initialization signal received by each sub-region can be flexibly adjusted. For example, for any ith sub-region in the display panel, the voltage value of the first initialization signal transmitted by the first initialization signal line Vref connected to the ith sub-region is determined according to the voltage value of the first power voltage signal transmitted by the first power voltage signal line ELVSS connected to the ith sub-region 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 first power voltage signal, and i is a positive integer. For example, the initial cross voltage value can include the first difference value and the second difference value described above, and the first difference value and the second difference value can 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 ith sub-region can be calculated according to the following expression.

[0092] Vint=A+ELVSS’ (1)

[0093] Vint = A - ELVSS ’, wherein Vint represents a voltage value of the first initialization signal transmitted by the first initialization signal line Vref connected to the i-th subregion, A represents a preset initial cross voltage value, and ELVSS’ represents a voltage value of the first power voltage signal transmitted by the first power voltage signal line ELVSS connected to the i-th subregion.

[0094] The initial cross voltage value A can be determined in advance, and the specific size of the initial cross voltage value A can be flexibly adjusted according to actual conditions, such as display quality (such as luminance and / or color uniformity), which is not limited in the embodiments of the present application. After the voltage value of the first power voltage signal ELVSS’ 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 subregions can be the same. That is, the initial cross voltage values of the light emitting elements in different subregions are ensured to be the same, so that the luminance difference of the light emitting elements in different subregions is small.

[0096] In some embodiments, the initial cross 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 first power voltage signal, so that the first electrode of the light emitting element has a relatively high potential, which is beneficial to reduce the subsequent charging time of the light emitting element, so that the light emitting element is quickly turned on.

[0097] According to some embodiments of the present application, optionally, the luminance range of the subregion display can be divided into a plurality of different luminance intervals. When displaying complex pictures, different subregions can be in different luminance intervals. In order to reduce the initial cross voltage difference of the light emitting elements in different subregions as much as possible, optionally, different luminance intervals can correspond to the same initial cross voltage value. For example, the luminance range of the subregion display is 0-1000nit, which can be divided into a plurality of different luminance intervals. For example, 0-100nit is a luminance interval, 101-200nit is a luminance interval, and so on, 901-1000nit is a luminance interval. Different luminance intervals can correspond to the same initial cross voltage value, for example, 0-100nit corresponds to the initial cross voltage value A, 101-200nit also corresponds to the initial cross voltage value A, and so on, 901-1000nit also corresponds to the initial cross voltage value A.

[0098] When the subregion is in different luminance intervals, the same initial cross 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 first power voltage signal transmitted by the first power voltage signal line connected to the i-th subregion can be determined according to the following steps one and step two.

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

[0101] The grayscale to be displayed for each sub-pixel in the i-th partition is known, and correspondingly, the brightness to be displayed for each sub-pixel in the i-th partition can also be determined. For example, if there are N sub-pixels in the i-th partition, in step one, the average brightness of the N sub-pixels to be displayed can be calculated, or the maximum brightness among the N sub-pixels to be displayed can be selected as the target brightness of the sub-image to be displayed in the i-th partition.

[0102] Step 2: Based on the current brightness range where the target brightness is located and the first correspondence between the brightness range and the voltage value of the first power supply voltage signal, determine the target voltage value of the first power supply voltage signal corresponding to the current brightness range.

[0103] A first correspondence between brightness ranges and the voltage values ​​of a first power supply voltage signal can be predetermined, wherein different brightness ranges can correspond to different voltage values ​​of the first power supply voltage signal to reduce power consumption. Based on the current brightness range in which the target brightness is located and the first correspondence, the target voltage value of the first power supply voltage signal corresponding to the current brightness range can be determined.

[0104] In this way, the voltage value of the first power supply voltage signal received by each zone can be flexibly adjusted according to the actual brightness to be displayed in each zone, which helps to reduce power consumption.

[0105] Figure 8 This is a schematic diagram of a pixel circuit in a display panel provided in an embodiment of this application. Figure 8 As shown, according to some embodiments of this 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, which 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. The control terminal of the first initialization module 702 is electrically connected to the first scan signal line S1, the first terminal of the first initialization module 702 is electrically connected to the first initialization signal line Vref, and the second terminal 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, transmitting the first initialization signal of the first initialization signal line Vref to the first electrode of the light-emitting element D to initialize the first electrode of the light-emitting element D.

[0106] The control terminal of the second initialization module 703 is electrically connected to the second scan signal line S2, the first terminal of the second initialization module 703 is electrically connected to the second initialization signal line Vref2, and the second terminal of the second initialization module 703 is electrically connected to the control terminal of the drive 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 terminal of the drive module 701 to initialize the control terminal of the drive 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 simultaneously. The first initialization signal provided by the first initialization signal line Vref in each partition can be used not only to initialize the first electrode of the light-emitting element D, but also to initialize the control terminal of the driving module 701.

[0108] It should be noted that the pixel circuits in the embodiments of this application are not limited to... Figure 8 The pixel circuit shown is not applicable to all pixel circuits that have a first initialization signal (i.e., reset the first electrode of the light-emitting element).

[0109] See also Figure 8 According to some embodiments of this 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, it will not be elaborated further here.

[0110] and Figure 8 Unlike the illustrated embodiment, according to some other embodiments of this 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] Figure 9 This is another circuit diagram of a display panel provided in an embodiment of this application. For example... Figure 9As shown, unlike the first initialization signal line Vref, the second initialization signal line Vref2 can be provided in the whole area. Specifically, the second initialization signal line Vref2 connected to the pixel circuit in at least two sub-regions 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 circuit in the plurality of sub-regions F.

[0112] Therefore, since the second initialization signal transmitted by the second initialization signal line Vref2 does not affect the cross voltage of the light emitting element, the second initialization signal line Vref2 is electrically connected to the second initialization module 703 of the pixel circuit in the plurality of sub-regions F, which facilitates the wiring of the second initialization signal line Vref2.

[0113] Based on the display panel provided in the above embodiments, correspondingly, 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 embodiments, please refer to the following embodiments.

[0114] Figure 10 A flowchart of the display panel driving method provided in the embodiments of the present application.

[0115] As Figure 10 shown, the display panel driving method can include the following steps:

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

[0117] S1002, providing different first power voltage signals to the second electrodes of the light emitting elements in the at least two sub-regions through at least two first power voltage signal lines.

[0118] The specific implementation process of S1001 and S1002 is described above, which will not be repeated here.

[0119] The display panel driving method of the present application, the first initialization signal line and the first power voltage signal line are independently set for each sub-region, and the voltage value of the first initialization signal of each sub-region can be independently set according to the voltage value of the first power voltage signal of each sub-region and the initial cross voltage value corresponding to each sub-region. With the change of the first power voltage signal transmitted by the first power voltage signal line, the light emitting element in each sub-region can obtain a suitable initial cross voltage value, which is beneficial to reduce the initial cross voltage value difference and the brightness difference of the light emitting elements in different sub-regions.

[0120] Figure 11 A flowchart of S1001 in the display panel driving method provided in the embodiments of the present application. AsFigure 11 As shown, S1001, different first initialization signals are provided to the first electrodes of the light emitting elements in the at least two partitions through at least two first initialization signal lines, which can specifically include the following steps S1101 to S1103.

[0121] S1101, for any ith partition in the display panel, the voltage value of the first power voltage signal provided to the ith partition and the preset initial cross voltage value are obtained, i is a positive integer.

[0122] S1102, according to the voltage value of the first power voltage signal corresponding to the ith 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 connection of the ith partition is determined.

[0123] 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 first power voltage signal.

[0124] For example, the voltage value of the first initialization signal transmitted by the first initialization signal line Vref corresponding to the connection of the ith partition can 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 corresponding to the connection of the ith partition, A represents the preset initial cross voltage value, and ELVSS' represents the voltage value of the first power voltage signal corresponding to the ith partition.

[0127] Wherein, the initial cross voltage value A can be determined in advance, and the specific size of the initial cross voltage value A can be flexibly adjusted according to the actual situation, such as the display quality (such as brightness and / or color uniformity), which is not limited by the embodiments of the application. After the voltage value of the first power voltage signal ELVSS' 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 connection of the ith partition, the first initialization signal with the corresponding voltage value is provided to the first initialization signal line corresponding to the connection of the ith partition.

[0129] According to some embodiments of the application, S1101, the voltage value of the first power voltage signal provided to the ith partition is obtained, which can specifically include the following step one and step two.

[0130] Step one, the target brightness of the sub-picture to be displayed by the ith partition is obtained, and the target brightness includes average brightness or maximum brightness.

[0131] The gray scale to be displayed by each sub-pixel in the i-th partition is known, and accordingly, the brightness to be displayed by each sub-pixel in the i-th partition can also be determined. For example, there are N sub-pixels in the i-th partition, and in step one, the average of the brightness to be displayed by the N sub-pixels or the maximum of the brightness to be displayed by the N sub-pixels can be calculated as the target brightness of the sub-picture to be displayed by the i-th partition.

[0132] In step two, according to the current brightness interval in which the target brightness is located and the first correspondence relationship between the brightness intervals and the voltage values of the first power supply voltage signals, the target voltage value of the first power supply voltage signal corresponding to the current brightness interval is determined.

[0133] The first correspondence relationship between the brightness intervals and the voltage values of the first power supply voltage signals can be determined in advance, where different brightness intervals can correspond to different voltage values of the first power supply voltage signals, so as to reduce power consumption. According to the current brightness interval in which the target brightness is located and the first correspondence relationship, the target voltage value of the first 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 by each partition, the voltage value of the first power supply voltage signal received by each partition can be flexibly adjusted, which is beneficial to reduce power consumption.

[0135] According to some embodiments of the present application, optionally, the brightness range of the partition display can be divided into a plurality of different brightness intervals, and when displaying a complex picture, different partitions can be in different brightness intervals. In order to reduce the initial voltage difference of the light emitting elements in different partitions as much as possible, optionally, different brightness intervals can correspond to the same initial voltage difference. For example, the brightness range of the partition display is 0-1000 nit, and 0-1000 nit can be divided into a plurality of different brightness intervals. For example, 0-100 nit is a brightness interval, 101-200 nit is a brightness interval, and 901-1000 nit is a brightness interval. Different brightness intervals can correspond to the same initial voltage difference, for example, 0-100 nit corresponds to an initial voltage difference A, 101-200 nit also corresponds to an initial voltage difference A, and 901-1000 nit also corresponds to an initial voltage difference A.

[0136] When the partitions are in different brightness intervals, the voltage value Vint of the first initialization signal can be calculated using the same initial voltage difference A.

[0137] Figure 10 And Figure 11 The specific implementation of each step in the driving method shown in FIGS. 1A-1D has been described in detail in the product embodiments described above, and the corresponding technical effects can be achieved. For brevity, the description is not repeated here.

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

[0139] Figure 12 A structural schematic diagram of the driving module provided in the embodiment of the present application. As shown in the figure, the driving module 1200 provided in the embodiment of the present application can include the following units: Figure 12

[0140] The acquisition unit 1201 is configured to acquire, for any i-th sub-region in the display panel, a voltage value of a first power voltage signal provided to the i-th sub-region and a preset initial cross-voltage value, i being a positive integer;

[0141] The calculation unit 1202 is configured to determine, according to the voltage value of the first power voltage signal corresponding to the i-th sub-region and the preset initial cross-voltage value, a voltage value of a first initialization signal transmitted by a first initialization signal line corresponding to the i-th sub-region, the initial cross-voltage value being a voltage difference between the voltage value of the first initialization signal and the voltage value of the first power voltage signal;

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

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

[0144] The driving module provided in the embodiment of the present application can independently set the voltage value of the first initialization signal of each sub-region according to the voltage value of the first power voltage signal of each sub-region and the preset initial cross-voltage value, which can ensure that the light emitting elements in each sub-region can obtain the same or similar initial cross-voltage value, and is beneficial to reduce the initial cross-voltage value difference and the brightness difference of the light emitting elements in different sub-regions.

[0145] ​In some embodiments, the acquisition unit 1201 is specifically configured to acquire a target brightness of the sub-pictures to be displayed by the i-th partition, the target brightness including an average brightness or a maximum brightness; and determine a target voltage value of the first power voltage signal corresponding to a current brightness interval according to the first corresponding relationship between the current brightness interval and the voltage value of the first power voltage signal.

[0146] Based on the display panel and / or the driving module provided in the above embodiments, the present application further provides a display device including the display panel and / or the driving module provided in the present application. Please refer to Figure 13 , Figure 13 FIG. 1 shows a structural schematic diagram of a display device provided in an embodiment of the present application. Figure 13 The display device 1000 provided in the present application includes the display panel 10 and / or the driving module 1200 provided in any of the above embodiments of the present application. Figure 13 The display device 1000 is described by taking a mobile phone as an example in the embodiments. It can be understood that the display device provided in the embodiments of the present application can be a wearable product, a computer, a television, a vehicle-mounted display device, or other display devices having a display function, which are not specifically limited in the present application. The display device provided in the embodiments of the present application has the beneficial effects of the display panel 10 provided in the embodiments of the present application, and specific descriptions can be made with reference to the specific descriptions of the display panel 10 in the above embodiments, which 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 in the present application can be combined with each other without contradiction.

[0148] 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 in the present application can be combined with each other without contradiction.

[0149] It should be understood by those skilled in the art that the above embodiments are exemplary but not limiting. Different technical features appearing in different embodiments can be combined to achieve beneficial effects. Other changed embodiments of the disclosed embodiments can be understood and implemented by those skilled in the art based on the drawings, the specification and the claims. In the claims, the term "comprising" does not exclude other structures; the number relates to "one" but does not exclude multiple; the terms "first", "second" are used to mark names and not to indicate any specific order. Any reference signs in the claims should not be understood as limiting the scope of protection. The fact that certain technical features appear 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. Each partition includes at least one sub-pixel, and the sub-pixel includes a light-emitting element. The first initialization signal lines connected to the first electrodes of the light-emitting elements in at least two of the partitions are different; the second electrodes of the light-emitting elements in at least two of the partitions are mutually insulated; and the first power supply voltage signal lines connected to the second electrodes of the light-emitting elements in at least two of the partitions are different. The first initialization signal line is used to transmit a first initialization signal to initialize the first electrode of the light-emitting element, and the first power supply voltage signal line is used to transmit a first power supply voltage signal. The display panel is provided with an isolation structure located between the light-emitting elements in different partitions to isolate the second electrodes of the light-emitting elements in different partitions. The at least two partitions include a first partition and a second partition. The first power supply voltage signal line connected to the first partition provides a negative power supply voltage signal with a first voltage value, and the first initialization signal line connected to the first partition provides a first initialization signal with a second voltage value. The first power supply voltage signal line connected to the second partition provides a negative power supply voltage signal with a third voltage value, and the first initialization signal line connected 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; the difference between the first voltage value and the second voltage value is a first difference, and the difference between the third voltage value and the fourth voltage value is a second difference; the difference between the first difference and the second difference is less than a preset threshold; when the first voltage value is greater than the third voltage value, the second voltage value is greater than the fourth voltage value; when the first voltage value is less than the third voltage value, the second voltage value is less than the fourth voltage value. Different partitions correspond to the same initial transvoltage value, which is greater than 0V; The brightness range of the partition display is divided into multiple different brightness intervals. When different partitions are in different brightness intervals, the different brightness intervals correspond to the same initial transvoltage value. 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 of the partitions are connected to different first sub-initialization signal lines, and different first sub-initialization signal lines are connected to different second initialization signal lines. The first initialization signal line connected to the first electrode of the light-emitting element in the same partition includes a first trace extending along a first direction and a second trace extending along a second direction, and the first trace and the second trace are electrically connected. The first sub-initialization signal line connected to the first electrode of the light-emitting element in the same partition includes multiple first traces and multiple second traces, which are cross-connected to form a mesh structure. Alternatively, the first sub-initialization signal line connected to the first electrode of the light-emitting element in the same partition includes multiple first traces and one second trace, which are connected to form a comb structure.

2. The display panel according to claim 1, characterized in that, The first electrode of the light-emitting element in the same partition is connected to the same first initialization signal line, and the second electrode of the light-emitting element in the same partition is connected to the same first power supply voltage signal line.

3. The display panel according to claim 1, characterized in that, Along the thickness direction of the display panel, the area formed by the orthographic projection of the mesh structure includes the first electrode corresponding to N light-emitting elements in the partition, 1≤N≤M, where M represents the number of light-emitting elements in the partition corresponding to the mesh structure, and N and M are both positive integers.

4. The display panel according to claim 3, characterized in that, N=1。 5. The display panel according to claim 1, characterized in that, The display panel also includes a plurality of first pads, different second sub-initialization signal lines are connected to different first pads, and different first pads are electrically connected to different first initialization signal output terminals of the driving module. The first initialization signal output terminal is used to provide the first initialization signal.

6. The display panel according to claim 5, characterized in that, The non-display area includes a first non-display area and a second non-display area, as well as a third non-display area and a fourth non-display area. The first non-display area, the display area, and the second non-display area are arranged sequentially along the column direction of the display panel, and the third non-display area, the display area, and the fourth non-display area are arranged sequentially along the row direction of the display panel. 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.

7. The display panel according to claim 1, 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, and a fourth metal layer, as well as an insulating layer between any two adjacent metal layers; One of the first trace portion and the second trace portion is located in the second metal layer, and the other is located in the third metal layer or the fourth metal layer.

8. The display panel according to claim 1, characterized in that, For any i-th partition in the display panel, the voltage value of the first initialization signal transmitted by the first initialization signal line connected to the i-th partition is determined based on the voltage value of the first power supply voltage signal transmitted by the first power supply voltage signal line connected to the i-th partition and a preset initial cross-voltage value. The initial cross-voltage value is the voltage difference between the voltage value of the first initialization signal and the voltage value of the first power supply voltage signal, where i is a positive integer.

9. The display panel according to claim 1, characterized in that, The display panel further includes a first scan signal line, a second scan signal line, and a second initialization signal line. Each 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 the control terminal of the first initialization module is electrically connected to the first scan signal line, the first terminal of the first initialization module is electrically connected to the first initialization signal line, and the second terminal of the first initialization module is electrically connected to the first electrode of the light-emitting element; The second initialization module has a control terminal electrically connected to the second scan signal line, a first terminal electrically connected to the second initialization signal line, and a second terminal electrically connected to the control terminal of the drive module. The second initialization module is used to transmit the second initialization signal of the second initialization signal line to the control terminal of the drive module to initialize the control terminal of the drive 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 of the partitions is different from the first initialization signal line.

10. The display panel according to claim 1, characterized in that, The first power supply voltage signal is a negative power supply voltage signal.

11. A driving method for a display panel, characterized in that, Applied to a display panel as described in any one of claims 1-10, the driving method includes: 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; Different first power supply voltage signals are provided to the second electrodes of the light-emitting elements in at least two partitions through at least two first power supply voltage signal lines; the display panel is provided with an isolation structure located between the light-emitting elements in different partitions, for isolating the second electrodes of the light-emitting elements in different partitions; The at least two partitions include a first partition and a second partition. The first power supply voltage signal line connected to the first partition provides a negative power supply voltage signal with a first voltage value, and the first initialization signal line connected to the first partition provides a first initialization signal with a second voltage value. The first power supply voltage signal line connected to the second partition provides a negative power supply voltage signal with a third voltage value, and the first initialization signal line connected 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; the difference between the first voltage value and the second voltage value is the first difference, the difference between the third voltage value and the fourth voltage value is the second difference, and the difference between the first difference and the second difference is less than a preset threshold. When the first voltage value is greater than the third voltage value, the second voltage value is greater than the fourth voltage value; when the first voltage value is less than the third voltage value, the second voltage value is less than the fourth voltage value. Different partitions correspond to the same initial transvoltage value, which is greater than 0V; The brightness range of the partition display is divided into multiple different brightness intervals. When different partitions are in different brightness intervals, the different brightness intervals correspond to the same initial transvoltage value. 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 of the partitions are connected to different first sub-initialization signal lines, and different first sub-initialization signal lines are connected to different second initialization signal lines. The first initialization signal line connected to the first electrode of the light-emitting element in the same partition includes a first trace extending along a first direction and a second trace extending along a second direction, and the first trace and the second trace are electrically connected. The first sub-initialization signal line connected to the first electrode of the light-emitting element in the same partition includes multiple first traces and multiple second traces, which are cross-connected to form a mesh structure. Alternatively, the first sub-initialization signal line connected to the first electrode of the light-emitting element in the same partition includes multiple first traces and one second trace, which are connected to form a comb structure.

12. The driving method according to claim 11, characterized in that, The provision of different first initialization signals to the first electrodes of the light-emitting elements in at least two partitions via at least two first initialization signal lines includes: For any i-th partition in the display panel, obtain the voltage value of the first power supply voltage signal provided to the i-th partition and the preset initial cross-voltage value, where i is a positive integer; Based on the voltage value of the first 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 connected to the i-th partition is determined, 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 first power supply voltage signal. Based on the voltage value of the first initialization signal transmitted on the first initialization signal line connected to the i-th partition, a first initialization signal with the corresponding voltage value is provided to the first initialization signal line connected to the i-th partition.

13. A driving module, characterized in that, The driving module is electrically connected to the display panel as described in any one of claims 1-10, and includes: The acquisition unit is used to acquire, for any i-th partition in the display panel, the voltage value of the first power supply voltage signal provided to the i-th partition and the preset initial cross-voltage value, where i is a positive integer; The calculation unit 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 based on the voltage value of the first 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 first power supply voltage signal. The output unit is used to provide a first initialization signal with a corresponding voltage value to the first initialization signal line connected to the i-th partition, based on the voltage value of the first initialization signal transmitted on the first initialization signal line connected to the i-th partition.

14. A display device, characterized in that, It includes the display panel as described in any one of claims 1-10 and / or the driving module as described in claim 13.

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