Display panel, display driving method thereof and display device

Abstract

The invention provides a display panel, a display driving method thereof and a display device, and belongs to the technical field of display. At least one light-emitting part in the display panel comprises at least two light-emitting units which are stacked and sequentially connected in series, and each light-emitting unit can emit light under the control of a power signal received by a first pole and a power signal received by a second pole of the light-emitting unit. Therefore, the at least two light-emitting units can be controlled to emit light at the same time or independently emit light in a time-sharing manner by flexibly setting the potential of each power supply signal. On the basis of controlling the at least two light-emitting units to emit light simultaneously, the light-emitting brightness can be improved; on the basis of controlling the at least two light-emitting units to emit light independently, the service life of the light-emitting units can be prolonged. In this way, it can be ensured that the yield of the display panel is good while it is ensured that the light-emitting brightness of the display panel is good.

Description

Technical Field

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

[0002] Organic light-emitting diode (OLED) lighting devices are lighting devices that use organic light-emitting diodes (OLEDs) as light-emitting devices. They are a type of display device and offer advantages such as self-illumination, wide viewing angles, high contrast, and low energy consumption. However, due to structural limitations, current OLED lighting devices have relatively low brightness and short lifespans. Summary of the Invention

[0003] A display panel, its display driving method, and a display device are provided, which can solve the technical problems of low brightness and short lifespan in related technologies. The technical solution is as follows:

[0004] On one hand, a display panel is provided, the display panel comprising: a substrate, and a plurality of light-emitting portions located on one side of the substrate; at least one of the light-emitting portions comprises: at least two light-emitting units, the at least two light-emitting units being stacked sequentially on one side of the substrate and connected in series via a first electrode and a second electrode;

[0005] One end of the at least two light-emitting units connected in series is used to receive a first power signal, the other end of the at least two light-emitting units connected in series is used to receive a second power signal, and the serial node of any two light-emitting units in the at least two light-emitting units is used to receive a third power signal.

[0006] Furthermore, each of the light-emitting units is used to emit light based on a power signal received by the first electrode and a power signal received by the second electrode; wherein the power signal includes at least one of the first power signal, the second power signal, and the third power signal.

[0007] Optionally, the substrate has multiple sides to surround and form a display area, and the plurality of light-emitting portions are located in the display area;

[0008] At least one of the multiple sides has a set of signal interfaces, the set of signal interfaces including a first interface, at least one second interface and a third interface, the at least one second interface corresponding one-to-one with at least one serial node included in the at least two light-emitting units;

[0009] The first interface is used to connect one end of the at least two light-emitting units connected in series to a peripheral circuit independent of the display panel, so as to receive the first power signal provided by the peripheral circuit;

[0010] Each of the second interfaces is used to connect the corresponding serial node to the peripheral circuit to receive the third power signal provided by the peripheral circuit;

[0011] The third interface is used to connect the other end of the at least two light-emitting units connected in series to the peripheral circuit to receive the second power signal provided by the peripheral circuit.

[0012] Optionally, each side of the polygon has the set of signal interfaces.

[0013] Optionally, at least one of the light-emitting parts includes two light-emitting units; the set of signal interfaces includes a second interface.

[0014] Optionally, at least one of the light-emitting parts includes: at least two sets of light-emitting units, each set of light-emitting units including the at least two light-emitting units;

[0015] In each group of light-emitting units, one end of the series connection of at least two light-emitting units is connected in parallel with each other, and the other end of the series connection of at least two light-emitting units is connected in parallel with each other.

[0016] Optionally, the display panel includes at least two repair electrodes corresponding one-to-one with the at least two groups of light-emitting units, and each group of light-emitting units has an independent light-emitting opening;

[0017] The at least two repair electrodes are respectively connected to the light-emitting opening of each group of light-emitting units through the first electrode of each light-emitting unit in each group of light-emitting units;

[0018] Each of the repair electrodes is used to disconnect any one of the at least two groups of light-emitting units when the light emission of any one group of light-emitting units is abnormal, thereby breaking the connection between the one group of light-emitting units and other groups of light-emitting units.

[0019] Optionally, at least one of the light-emitting parts includes two sets of light-emitting units.

[0020] Optionally, the at least two light-emitting units include:

[0021] A first electrode layer, at least two light-emitting layers, and a second electrode layer are sequentially stacked in a direction away from the substrate, and a third electrode layer is located between each pair of adjacent light-emitting layers;

[0022] Wherein, the first electrode layer is used to receive the first power signal, the second electrode layer is used to receive the second power signal, and the third electrode layer is used to receive the third power signal.

[0023] Optionally, at least one of the first electrode layer and the second electrode layer, as well as the third electrode layer, are made of a transparent conductive material.

[0024] Optionally, the display panel further includes:

[0025] A buffer layer, a passivation layer, and a pixel defining layer are stacked sequentially between the substrate and the at least two light-emitting units, in a direction away from the substrate;

[0026] The pixel defining layer has a plurality of first defining openings, and the plurality of light-emitting parts are located in the plurality of first defining openings in a corresponding manner.

[0027] Optionally, the plurality of light-emitting portions are spaced apart, and at least one of the first electrode layer, the second electrode layer, and the third electrode layer includes: a main electrode portion and an auxiliary electrode portion, wherein the sheet resistance of the auxiliary electrode portion is less than the sheet resistance of the main electrode portion;

[0028] The main electrode portion is located in the first defining opening, and the auxiliary electrode portion is located in the interval region between two adjacent light-emitting portions. The auxiliary electrode portion is used to connect the main electrode portions of two adjacent light-emitting portions.

[0029] Optionally, the third electrode layer includes: a main electrode portion and an auxiliary electrode portion;

[0030] The pixel defining layer also has a second defining opening located in the spaced region between two adjacent light-emitting portions, and the auxiliary electrode portion in the third electrode layer is located in the second defining opening;

[0031] The auxiliary electrode portion in the third electrode layer includes a first metal layer, a first electrode layer, a second metal layer, and an auxiliary electrode layer stacked sequentially in a direction away from the buffer layer. The auxiliary electrode layer is used to disconnect the at least two light-emitting layers and the second electrode layer in two adjacent light-emitting portions in the second defining opening.

[0032] Optionally, the auxiliary electrode layer is shared with the first electrode layer.

[0033] Optionally, the at least two light-emitting units are identical devices of the same color.

[0034] On the other hand, a display driving method for a display panel is provided, for driving the display panel as described in the above aspect; the method includes:

[0035] During the light-emitting stage, power signals with different potentials are provided to the first and second electrodes of one or more of the at least two light-emitting units included in a light-emitting part, so as to drive the one or more light-emitting units to emit light; wherein, the power signals include at least one of a first power signal, a second power signal and a third power signal.

[0036] Optionally, the light-emitting stage includes at least two light-emitting sub-stages in which the at least two light-emitting units are sequentially driven to emit light;

[0037] During the light-emitting phase, providing power signals of different potentials to the first and second electrodes of one or more of the at least two light-emitting units in a light-emitting section includes:

[0038] In each of the light-emitting sub-stages, power signals of different potentials are provided to the first and second electrodes of one of the at least two light-emitting units, and power signals of the same potential are provided to the first and second electrodes of the other light-emitting units, in order to drive the light-emitting unit to emit light and cause the other light-emitting units to stop emitting light.

[0039] Optionally, the method further includes: a shutdown phase performed between two adjacent light-emitting sub-phases in the at least two light-emitting sub-phases;

[0040] During the shutdown phase, a power signal with the same potential is provided to the first and second electrodes of each of the at least two light-emitting units, so that each light-emitting unit stops emitting light.

[0041] Optionally, during the light-emitting stage, providing power signals of different potentials to the first and second electrodes of one or more of the at least two light-emitting units in a light-emitting section includes:

[0042] During the light-emitting phase, power signals of different potentials are provided to the first and second electrodes of each of the at least two light-emitting units to drive each light-emitting unit to emit light simultaneously.

[0043] Optionally, the potential difference of the power supply signals provided to the first and second electrodes of different light-emitting units is the same.

[0044] In another aspect, a display device is provided, the display device comprising: peripheral circuitry, and a display panel as described in the preceding aspect;

[0045] The peripheral circuit is connected to the light-emitting part in the display panel and is used to provide power signals to at least two light-emitting units included in the light-emitting part so as to drive the at least two light-emitting units to emit light.

[0046] In summary, the beneficial effects of the technical solution provided in this application can include at least the following:

[0047] A display panel and its display driving method and display device are provided. Since at least one light-emitting portion in the display panel includes at least two light-emitting units stacked and connected in series, and each light-emitting unit can emit light under the control of a power signal received at its first electrode and a power signal received at its second electrode, the potentials of each power signal can be flexibly set to control the at least two light-emitting units to emit light simultaneously or independently in a time-division manner. By controlling at least two light-emitting units to emit light simultaneously, the brightness can be improved; by controlling at least two light-emitting units to emit light independently, the lifespan of the light-emitting units can be improved. Therefore, while ensuring good brightness, the yield rate of the display panel can also be ensured. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application;

[0050] Figure 2 This is a schematic diagram of the structure of a light-emitting part provided in an embodiment of this application;

[0051] Figure 3 This is a schematic diagram of another light-emitting part provided in an embodiment of this application;

[0052] Figure 4 This is one of the embodiments provided in this application. Figure 3 A schematic diagram of the layout of the light-emitting part is shown;

[0053] Figure 5 This is one of the embodiments provided in this application. Figure 2 A cross-sectional schematic diagram of the light-emitting part shown;

[0054] Figure 6 This is another embodiment provided in this application. Figure 2 A cross-sectional schematic diagram of the light-emitting part shown;

[0055] Figure 7 This is a schematic flowchart of a display panel display driving method provided in an embodiment of this application;

[0056] Figure 8This is a schematic diagram of the signal timing for driving a light-emitting part to emit light, provided in an embodiment of this application.

[0057] Figure 9 This is a schematic diagram of the signal timing for driving the light-emitting part to emit light, provided in another embodiment of this application.

[0058] Figure 10 This is one of the embodiments provided in this application. Figure 2 A schematic diagram illustrating the light-emitting principle of the light-emitting part shown.

[0059] Figure 11 This is another embodiment provided in this application. Figure 2 A schematic diagram illustrating the light-emitting principle of the light-emitting part shown.

[0060] Figure 12 This is yet another embodiment provided in this application. Figure 2 A schematic diagram illustrating the light-emitting principle of the light-emitting part shown.

[0061] Figure 13 This is a schematic diagram of the structure of a display device provided in an embodiment of this application. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0063] It should be noted that the transistors used in all embodiments of this application can be thin-film transistors, field-effect transistors, or other devices with similar characteristics. Based on their function in the circuit, the transistors used in the embodiments of this application are mainly switching transistors. Since the source and drain of the switching transistors used here are symmetrical, their sources and drains are interchangeable. The source is referred to as the first terminal, and the drain as the second terminal, or vice versa. According to the configuration shown in the accompanying drawings, the middle terminal of the transistor is the gate, the signal input terminal is the source, and the signal output terminal is the drain. Furthermore, the switching transistors used in the embodiments of this application can include any one or a combination of P-type and N-type transistors. Specifically, the P-type transistor conducts when the gate voltage is low and is cut off when the gate voltage is high, while the N-type transistor conducts when the gate voltage is high and is cut off when the gate voltage is low.

[0064] Currently, in OLED lighting devices, each light-emitting part typically includes only one light-emitting unit, resulting in poor brightness, short lifespan, and low product yield. Therefore, this application provides a display panel applicable to OLED lighting devices. This display panel offers better brightness, a longer lifespan, and consequently, a higher product yield. Figure 1As shown, the display panel includes a substrate 10 and a plurality of light-emitting portions 00 located on one side of the substrate.

[0065] exist Figure 1 Based on this, continue to refer to Figure 2 It can be seen that among the plurality of light-emitting parts 00, at least one light-emitting part 00 includes at least two light-emitting units 01, which are sequentially stacked on one side of the substrate 10 and connected in series via a first electrode and a second electrode. That is, each light-emitting part 00 may include two or more stacked light-emitting units 01, and in the at least two stacked light-emitting units 01, the first electrode and the second electrode of every two adjacent light-emitting units 01 can be connected.

[0066] Optionally, each of the at least two light-emitting units 01 can be the same type of device capable of emitting light of the same color. For example, each light-emitting unit 01 can be an OLED capable of emitting white light. The first electrode of the OLED can be an anode, and the second electrode can be a cathode; of course, the first and second electrodes can also be interchanged. The light-emitting parts 00 of the OLED stacked arrangement can also be called a stacked OLED architecture. Of course, in some other embodiments, each of the at least two light-emitting units 01 can also be different types and / or different devices emitting light of different colors.

[0067] It is understood that, based on the fact that each light-emitting unit 01 emits white light, the display panel can be applied to a lighting scene to achieve a lighting effect. Based on the fact that each light-emitting unit 01 emits light of a different color, the display panel can be applied to a display scene to achieve a display effect. This application's embodiment uses the application of the display panel in a lighting scene as an example for illustration.

[0068] Continue to combine Figure 2 At least two light-emitting units 01 are connected in series at one end to receive a first power signal, and at least two light-emitting units 01 are connected in series at the other end to receive a second power signal. Among the at least two light-emitting units 01, the series connection node N of any two light-emitting units 01 is used to receive a third power signal. Optionally, different series connection nodes N can be used to receive the same third power signal, or they can receive different third power signals.

[0069] That is, in at least two light-emitting units 01 connected in series, the first and second poles of the two light-emitting units 01 located at the beginning and end can receive the first power signal and the second power signal respectively. The first and second poles of each two adjacent light-emitting units 01 in the other light-emitting units 01 are connected (the connection node is the series node N) and used to receive the third power signal.

[0070] Furthermore, each light-emitting unit 01 emits light based on the power signal received by the first electrode and the power signal received by the second electrode. For example, each light-emitting unit 01 can emit light based on the voltage difference between the power signals received by the first electrode and the second electrode. That is, for each light-emitting unit 01, when there is a certain voltage difference between the power signals received by its first electrode and the second electrode, the light-emitting unit 01 can be lit to emit light. Of course, based on the first electrode being the anode and the second electrode being the cathode, the voltage difference between the power signal received by the first electrode and the power signal received by the second electrode generally needs to be greater than 0 for the light-emitting unit 01 to be lit.

[0071] It is understood that the power signal here includes at least one of the first power signal, the second power signal, and the third power signal. For example, the power signals received by the first and second electrodes of the light-emitting unit 01 located at the beginning can be the first power signal and the third power signal, respectively. The power signals received by the first and second electrodes of the light-emitting unit 01 located at the end can be the third power signal and the second power signal, respectively. The power signals received by the first and second electrodes of other light-emitting units 01 located at other points (not at the beginning or end) can be different or the same third power signal, respectively.

[0072] For example, combining Figure 1 and Figure 2 Each light-emitting part 00 shown may include two light-emitting units 01. For distinction, the two light-emitting units 01 are labeled 01-1 and 01-2, respectively. The first electrode of light-emitting unit 01-1 can be used to receive a first power signal, and the second electrode of light-emitting unit 01-1 can be connected to the first electrode of light-emitting unit 01-2 to form a series node N, and used to receive a third power signal. The second electrode of light-emitting unit 01-2 can be used to receive a second power signal. Based on this, light-emitting unit 01-1 can emit light under the voltage difference between the first and third power signals, and light-emitting unit 01-2 can emit light under the voltage difference between the third and second power signals. Thus, by flexibly setting the potentials of the first, second, and third power signals, the at least two light-emitting units 01 included in the light-emitting part 00 can be controlled to emit light independently or simultaneously.

[0073] For example, still combined Figure 2Taking the independent illumination of two light-emitting units 01-1 and 01-2 included in the light-emitting section 00 as an example, in one driving method: First, by setting the potential of the first power signal to a high potential VGH, and simultaneously setting the potentials of the second power signal and the third power signal to the same low potential VSS, the light-emitting unit 01-1 can be controlled to emit light under the action of the voltage difference between the first power signal and the third power signal. Then, by setting the potential of the third power signal to a high potential VGH, and simultaneously setting the potentials of the first power signal and the second power signal to the same low potential VSS, the light-emitting unit 01-2 can be controlled to emit light under the action of the voltage difference between the third power signal and the second power signal. In this way, the purpose of controlling the two light-emitting units 01-1 and 01-2 to emit light independently, without emitting light simultaneously, is achieved.

[0074] Taking the simultaneous illumination of two light-emitting units 01-1 and 01-2 included in the light-emitting section 00 as an example, in another driving method: the potential of the first power signal can be set to a high potential VGH, the potential of the second power signal can be set to a low potential VSS, and the potential of the third power signal can be set between the high potential and the low potential, such as setting the potential of the third power signal to VGH / 2, so that the light-emitting unit 01-1 is controlled to emit light under the action of the voltage difference between the first power signal and the third power signal, and the light-emitting unit 01-2 is simultaneously controlled to emit light under the action of the voltage difference between the third power signal and the second power signal. In this way, the purpose of controlling the two light-emitting units 01-1 and 01-2 to emit light simultaneously is achieved.

[0075] It is understandable that by controlling at least two light-emitting units 01 within a light-emitting section 00 to emit light independently, the lifespan of each light-emitting unit 01 can be extended while maintaining high brightness on the display panel. For example, combined with Figure 2 A counter unit can be added via external hardware to calculate the light-emitting time of each of the two light-emitting units 01-1 and 01-2, thereby flexibly selecting the driving mode and providing power signals. The aging time of the two light-emitting units 01-1 and 01-2 can be averaged, thus doubling the lifespan of each light-emitting unit 01. This also improves the product quality of the display panel. By controlling at least two light-emitting units 01 in a light-emitting section 00 to emit light simultaneously, the brightness of the display panel can be increased, i.e., the illumination brightness can be improved. For example, combined with... Figure 2By controlling the two light-emitting units 01-1 and 01-2 to emit light in a time-sharing manner, the lifespan of the two light-emitting units 01-1 can be doubled compared to controlling them to emit light simultaneously. Furthermore, by controlling the two light-emitting units 01-1 and 01-2 to emit light simultaneously, the illumination brightness can be doubled compared to controlling them to emit light at different times. In other words, the display panel provided in this embodiment not only has better brightness but also a longer lifespan, resulting in a higher product yield.

[0076] In summary, this application provides a display panel. Since at least one light-emitting portion in the display panel includes at least two light-emitting units stacked and connected in series, and each light-emitting unit can emit light under the control of a power signal received at its first electrode and a power signal received at its second electrode, the potentials of each power signal can be flexibly set to control the at least two light-emitting units to emit light simultaneously or independently in a time-sharing manner. Controlling at least two light-emitting units to emit light simultaneously improves the brightness; controlling at least two light-emitting units to emit light independently improves the lifespan of the light-emitting units. Therefore, while ensuring good brightness, the yield rate of the display panel is also ensured.

[0077] Optionally, continue to refer to Figure 1 As can be seen, the substrate 10 can have polygons to surround and form the display area AA, and multiple light-emitting parts 00 can be located in the display area AA.

[0078] For example, Figure 1 The substrate 10 shown is rectangular, with four sides: top, bottom, left, and right. Of course, in some other embodiments, the substrate 10 may also have other shapes, such as a hexagon with six sides. This application does not limit the shape of the substrate 10.

[0079] In this configuration, at least one side may have a set of signal interface Ports (also called Port ports). A set of signal interface Ports may include a first interface Port A, at least one second interface Port B, and a third interface Port C. At least one second interface Port B corresponds one-to-one with at least one serial node N included in at least two light-emitting units 01. That is, for any two adjacent serial nodes N of light-emitting units 01, there is a corresponding second interface Port B. Of course, in some other embodiments, multiple serial nodes N may also correspond to one second interface Port B.

[0080] Combination Figure 2The first interface, Port A, is used to connect one end of at least two light-emitting units 01 connected in series to a peripheral circuit (not shown in the figure) independent of the display panel to receive a first power signal provided by the peripheral circuit. Each second interface, Port B, is used to connect the corresponding series node N to the peripheral circuit to receive a third power signal provided by the peripheral circuit. The third interface, Port C, is used to connect the other end of at least two light-emitting units 01 connected in series to the peripheral circuit to receive a second power signal provided by the peripheral circuit. That is, the peripheral circuit can provide the required power signal to at least two light-emitting units 01 included in a light-emitting section 00 through the first interface, Port A, the second interface, Port B, and the third interface, Port C.

[0081] Alternatively, the peripheral circuitry can be, for example, a power supply circuit capable of providing a power signal, such as a charge pump circuit.

[0082] Optionally, in some embodiments, each of the polygons of the substrate 10 may have a set of signal interface ports.

[0083] Understandably, each of the multiple signal interface ports can be used to connect peripheral circuits to at least two light-emitting units 01 included in a light-emitting part 00, so as to receive power signals provided by the peripheral circuits from the multiple signal interface ports. In this way, the voltage drop (IR drop) of the power signal can be reduced, ensuring that the potential uniformity of the power signal received by each light-emitting part 00 is better, thereby ensuring that the brightness of each light-emitting part 00 is more uniform, and the display effect of the display panel can be better.

[0084] For example, combining Figure 1 The substrate 10 shown has four sides, and correspondingly, the substrate 10 can have four sets of signal interface Ports, forming a four-sided power effect, that is, providing power signals (also called power supply) from all four sides to at least two light-emitting units 01 in each light-emitting part 00. For distinction, the signal interface Ports located on the left, right, top, and bottom sides are respectively labeled as Port-1, Port-2, Port-3, and Port-4.

[0085] Optionally, such as Figure 2 As shown, at least one light-emitting part 00 (e.g., each light-emitting part 00) may include two light-emitting units 01-1 and 01-2. Since the two light-emitting units 01-1 and 01-2 have a series node N, a set of signal interface Ports may include a second interface Port B. The second interface Port B corresponds to and is connected to the series node N of the two light-emitting units 01-1 and 01-2.

[0086] Optionally, combined Figure 3 It can be seen that at least one light-emitting part 00 may include at least two sets of light-emitting units 01Z, and each set of light-emitting units 01Z may include at least two light-emitting units 01 as described above.

[0087] In each group of light-emitting units 01Z, at least two light-emitting units 01 connected in series can be connected in parallel at one end, and at least two light-emitting units 01 connected in series at the other end can be connected in parallel.

[0088] In other words, at least two light-emitting units 01 in a light-emitting part 00 can be divided into multiple groups to increase signal channels, facilitate maintenance of different signal channels, and thus increase product yield.

[0089] For example, in some embodiments, such as Figure 3 As shown, at least one light-emitting part 00 may include: two sets of light-emitting units 01Z. Furthermore, each set of light-emitting units 01Z may include, as shown below: Figure 2 The two light-emitting units shown are 01-1 and 01-2. That is, at least two light-emitting units 01 in a single light-emitting section 00 can be divided into two groups, totaling four modules. For distinction, Figure 3 The two sets of light-emitting units 01Z are labeled as 01Z-1 and 01Z-2 respectively. The two light-emitting units 01-1 and 01-2 included in one set of light-emitting units 01Z-1 are labeled as 01-1_1 and 01-2_1 respectively. The two light-emitting units 01-1 and 01-2 included in the other set of light-emitting units 01Z-2 are labeled as 01-1_2 and 01-2_2 respectively.

[0090] Furthermore, refer to Figure 3As can be seen, the first electrodes of light-emitting units 01-1_1 and 01-1_2 can be connected in parallel as one end of the series connection of two light-emitting units 01, and connected to the peripheral circuit through the first interface Port A to receive the first power signal provided by the peripheral circuit. The second electrodes of light-emitting units 01-2_1 and 01-2_2 can be connected in parallel as one end of the series connection of two light-emitting units 01, and connected to the peripheral circuit through the third interface Port C to receive the second power signal provided by the peripheral circuit. Furthermore, the second electrodes of light-emitting units 01-1_1 and 01-2_1 are connected to the series node N_1 and connected to the peripheral circuit through the second interface Port B1 to receive the third power signal provided by the peripheral circuit. The second electrodes of light-emitting units 01-1_2 and 01-2_2 are connected to the series node N_2 and connected to the peripheral circuit through the second interface Port B2 to receive the third power signal provided by the peripheral circuit. Optionally, the second interface Port B1 and Port B2 can be the same second interface Port B to receive the same third power signal, or they can be different second interface Port B to receive different third power signals.

[0091] Optionally, in Figure 3 Based on this, continue to refer to Figure 4 It can be seen that the display panel may also include at least two repair electrodes corresponding to at least two sets of light-emitting units 01Z, and each set of light-emitting units 01Z may have an independent light-emitting opening.

[0092] At least two repair electrodes can be connected to the light-emitting opening of each group of light-emitting units 01 through the first electrode of each light-emitting unit 01 in each group of light-emitting units 01Z.

[0093] Each repair electrode is used to disconnect any one of the at least two groups of light-emitting units 01Z when the light emission of any one group of light-emitting units 01Z is abnormal, so as to break the connection between the one group of light-emitting units 01Z and other groups of light-emitting units 01Z.

[0094] In other words, based on dividing at least two light-emitting units 01 of a light-emitting part 00 into at least two groups of light-emitting units 01Z, a repair electrode can be provided for each group of light-emitting units 01Z. Of course, different groups of light-emitting units 01Z correspond to different repair electrodes. Furthermore, when any group of light-emitting units 01Z experiences a display defect, such as particle defects, the repair electrode corresponding to that group of light-emitting units 01Z can be cut off by a method similar to laser cutting. This disconnects the group of light-emitting units 01Z from other normally emitting groups of light-emitting units 01Z, thereby avoiding affecting the normal light emission of the light-emitting units 01 in the other normally emitting groups of light-emitting units 01Z, and thus improving the product yield of the display panel.

[0095] For example, with Figure 3 Taking the structure shown as an example, which includes two sets of light-emitting units 01Z-1 and 01Z-2, combined with... Figure 4 As can be seen, the display panel may include two repair electrodes corresponding one-to-one with the two sets of light-emitting units 01Z-1 and 01Z-2. Furthermore, in the two sets of light-emitting units 01Z-1 and 01Z-2, the two light-emitting units 01-1_1 and 01-2_1 in one set of light-emitting units 01Z-1 may have a light-emitting opening A, and the two light-emitting units 01-1_2 and 01-2_2 in the other set of light-emitting units 01Z-2 may have a light-emitting opening B. Of the two repair electrodes, one repair electrode may be located on the left side and connected to the first electrode of the light-emitting unit 01-1_1 in one set of light-emitting units 01Z-1, and connected to the first electrode of the light-emitting unit 01-1_2 in the other set of light-emitting units 01Z-2, respectively, to access the light-emitting openings A and B of the two sets of light-emitting units 01Z-1 and 01Z-2. That is, this one repair electrode may be shared with the end connected to the peripheral circuit via the first interface Port A. Another repair electrode can be located on the right side and connected to the first electrode of light-emitting unit 01-2_1 included in one set of light-emitting units 01Z-1, and to the first electrode of light-emitting unit 01-2_2 included in another set of light-emitting units 01Z-2, so as to connect to the light-emitting openings A and B of the two sets of light-emitting units 01Z-1 and 01Z-2 respectively. That is, this other repair electrode can be shared with the series node of the peripheral circuit connected through the second interface Port B.

[0096] In other words, combining Figure 4 In the embodiments of this application, it can be Figure 3The light-emitting openings of the two sets of light-emitting units 01Z-1 and 01Z-2 are divided into two regions, A and B, with repair electrodes set on the left and right sides respectively. The repair electrode on the left can be divided into two channels through the anodes of light-emitting units 01-1_1 and 01-1_2, connecting to regions A and B respectively. Here, the anodes of light-emitting units 01-1_1 and 01-1_2 are connected in parallel to receive the first power signal provided by the external circuit through the first interface Port A. Similarly, the repair electrode on the right can be divided into two channels through the anodes of light-emitting units 01-2_1 and 01-2_2, connecting to regions A and B respectively. Here, the anodes of light-emitting units 01-2_1 and 01-2_2 are connected in parallel to receive the second power signal provided by the external circuit through the third interface Port C. Based on this, assuming a particle defect occurs in region B, the channel connecting to region B can be laser-cut to disconnect region B from region A. This also disconnects the two sets of light-emitting units 01Z-1 and 01Z-2, thus avoiding affecting the light emission display in region A. (Example) Figure 4 The location of the laser cutting is also schematically shown.

[0097] Optionally, combined Figure 1 and Figure 2 , Figure 5 A schematic cross-sectional view of a display panel in the MM' direction is shown. Figure 5 As shown, at least two light-emitting units 01 in a light-emitting part 00 may include:

[0098] A first electrode layer 101, at least two light-emitting layers EL, and a second electrode layer 102 are sequentially stacked in a direction away from the substrate 10, and a third electrode layer 103 is located between each two adjacent light-emitting layers EL.

[0099] Specifically, the first electrode layer 101 can be used to receive a first power signal, the second electrode layer 102 can be used to receive a second power signal, and the third electrode layer 103 can be used to receive a third power signal. That is, the first electrode layer 101 can... Figure 1 The first interface, Port A, is connected to an external circuit to receive a first power signal provided by that external circuit; the second electrode layer 102 can be connected via... Figure 1 The third interface, Port C, shown is connected to an external circuit to receive a second power signal provided by that external circuit; the third electrode layer 103 can be connected via... Figure 1The second interface, Port B, shown is connected to an external circuit to receive a third power signal provided by that external circuit. Correspondingly, the first electrode layer 101 can also be referred to as Port A, the third electrode layer 103 as Port B, and the second electrode layer 102 as Port C.

[0100] For example, with Figure 2 Taking the structure shown as an example, specifically a light-emitting part 00 comprising two light-emitting units 01-1 and 01-2, combined with... Figure 5 As can be seen, the two light-emitting units 01-1 and 01-2 may include a first electrode layer 101 stacked sequentially along the direction away from the substrate 10, a light-emitting layer EL included in one light-emitting unit 01-1, a third electrode layer 103, a light-emitting layer EL included in the other light-emitting unit 01-2, and a second electrode layer 102. That is, the light-emitting layer EL of light-emitting unit 01-1 can be disposed between Port A layer and Port B layer, and the light-emitting layer EL of light-emitting unit 01-2 can be disposed between Port B layer and Port C layer. For distinction, the light-emitting layer EL included in light-emitting unit 01-1 is labeled as EL-1, and the light-emitting layer EL included in light-emitting unit 01-2 is labeled as EL-2.

[0101] Optionally, in this embodiment, the material of at least one of the first electrode layers 101 and the second electrode layer 102, and the material of the third electrode layer 103, may include a transparent conductive material. That is, the third electrode layer 103 located in the middle may be a transparent conductive layer, and the first electrode layer 101 and / or the second electrode layer 102 may be transparent conductive layers. Furthermore, considering the placement of the first electrode layer 101 and the second electrode layer 102, it can be seen that, based on the first electrode layer 101 being a transparent conductive layer, a bottom-emitting method can be used to drive the display panel to emit light; based on the second electrode layer 102 being a transparent conductive layer, a top-emitting method can be used to drive the display panel to emit light. That is, the display panel provided in this embodiment can emit light using either a top-emitting or bottom-emitting light mode. The transparent conductive material may, for example, be indium tin oxide (ITO).

[0102] Optionally, continue to refer to Figure 5 As can be seen, the display panel may also include: a buffer layer, a passivation layer PVX and a pixel delimiting layer PDL, which are located between the substrate 10 and at least two light-emitting units 01 and are stacked sequentially in a direction away from the substrate 10.

[0103] The pixel defining layer has multiple first defining openings K1, and multiple light-emitting parts 00 can be located one-to-one in the multiple first defining openings K1.

[0104] It is understood that the plurality of first defining openings K1 can be spaced sequentially along a direction parallel to the bearing surface of the substrate 10, and expose the passivation layer PVX. Each light-emitting part 00 can be located in a corresponding first defining opening K1, and different light-emitting parts 00 can be located in different first defining openings K1.

[0105] Optionally, combined Figure 1 It can also be seen that multiple light-emitting parts 00 can be arranged at intervals. Based on this, Figure 6 A schematic cross-sectional view of a display panel along the NN' direction is shown. (Combined with...) Figure 6 It can be seen that at least one of the first electrode layer 101, the second electrode layer 102, and the third electrode layer 103 may include a main electrode portion B1 and an auxiliary electrode portion B2, wherein the sheet resistance of the auxiliary electrode portion B2 may be less than the sheet resistance of the main electrode portion B1. In this way, the overall sheet resistance of the at least one electrode layer can be reduced, thereby ensuring reliable transmission of the power signal.

[0106] Furthermore, the main electrode portion B1 can be located within the first defining opening K1, and the auxiliary electrode portion B2 can be located in the spacer region between two adjacent light-emitting portions 00. The auxiliary electrode portion B2 can be used to connect the main electrode portions B1 of the two adjacent light-emitting portions 00. That is, in some embodiments, at least one electrode layer can be divided into two parts: the main electrode portion B1 and the auxiliary electrode portion B2. Of course, in some other embodiments, at least one electrode layer can also be a single-layer structure, without distinguishing between the main electrode portion B1 and the auxiliary electrode portion B2.

[0107] For example, Figure 6 In the display panel shown, the third electrode layer 103 may include a main electrode portion B1 and an auxiliary electrode portion B2.

[0108] The pixel defining layer PDL may also have a second defining opening K2 located in the spaced area between two adjacent light-emitting parts 00, and the auxiliary electrode part B2 in the third electrode layer 103 may be located in the second defining opening K2.

[0109] The auxiliary electrode portion B2 in the third electrode layer 103 may include a first metal layer Metal1, a first electrode layer 101 and a second metal layer Metal2, which are sequentially stacked in a direction away from the buffer layer.

[0110] The auxiliary electrode layer 104 can be used to disconnect at least two light-emitting layers EL and the second electrode layer 102 in the second defining opening K2 of two adjacent light-emitting parts 00.

[0111] That is, an auxiliary electrode layer 104 can be set to form such a Figure 6The I-shaped (RIB) topography shown cuts off the connection between at least two light-emitting layers EL and the second electrode layer 102 at the second defining opening K2, and also disconnects the third electrode layer 103 within the second defining opening K2. An auxiliary electrode portion B2 is provided at the disconnected portion to establish a connection between the main electrode portions B1 of the third electrode layers 103 of two adjacent light-emitting portions 00, thereby reducing the sheet resistance of the third electrode layer 103 and ensuring reliable transmission of the third power signal.

[0112] Alternatively, in some embodiments, such as Figure 6 As shown, the auxiliary electrode layer 104 and the first electrode layer 101 can be shared. That is, the auxiliary electrode layer 104 and the first electrode layer 101 can be made of the same material. This can save costs.

[0113] Optionally, as described above, in the embodiments of this application, at least two light-emitting units 01 included in a light-emitting part 00 can be the same device of the same color. That is, they can be the same type of device, such as OLEDs that emit white light. Of course, in some other embodiments, at least two light-emitting units 01 can also be different devices. The differences here include different colors of the emitted light and / or different device types.

[0114] Optionally, as described above, in the embodiments of this application, the first electrode of the light-emitting unit 01 can be an anode, and the second electrode can be a cathode. That is, the anode of the light-emitting unit 01 located at the first end can be used to receive a first power signal, and the cathode of the light-emitting unit 01 located at the tail end can be used to receive a second power signal.

[0115] As described above, this application provides a display panel with a Lighting display driving architecture, which can significantly improve product lifespan and brightness. For example, by controlling multiple light-emitting units 01 in a light-emitting part 00 to emit light independently, the product can maintain high brightness while also extending the lifespan of each light-emitting unit 01. By controlling multiple light-emitting units 01 in a light-emitting part 00 to emit light simultaneously, the brightness of the light-emitting part 00 can be effectively increased, thus improving lighting brightness in lighting scenarios. Furthermore, by adopting... Figure 3 and Figure 4 The grouping design also enables the repair of dark spots and dead pixels, improving product yield. These features provide excellent technical support for Lighting products.

[0116] In summary, this application provides a display panel. Since at least one light-emitting portion in the display panel includes at least two light-emitting units stacked and connected in series, and each light-emitting unit can emit light under the control of a power signal received at its first electrode and a power signal received at its second electrode, the potentials of each power signal can be flexibly set to control the at least two light-emitting units to emit light simultaneously or independently in a time-sharing manner. Controlling at least two light-emitting units to emit light simultaneously improves the brightness; controlling at least two light-emitting units to emit light independently improves the lifespan of the light-emitting units. Therefore, while ensuring good brightness, the yield rate of the display panel is also ensured.

[0117] This application also provides a display driving method for a display panel, which is used to drive the display panel as described above. Figure 7 As shown, the method includes:

[0118] Step 701: In the light-emitting stage, power signals of different potentials are provided to the first and second electrodes of one or more of the at least two light-emitting units included in a light-emitting part, so as to drive one or more light-emitting units to emit light.

[0119] The power signal includes at least one of the first power signal, the second power signal, and the third power signal.

[0120] Optionally, in the first embodiment, the light-emitting stage may include at least two light-emitting sub-stages in which at least two light-emitting units are driven to emit light sequentially. That is, at least two light-emitting units included in a light-emitting part can be driven to emit light independently in a time-division manner. In this way, the lifespan of each light-emitting unit can be improved. Correspondingly, step 701 above, that is, in the light-emitting stage, providing power signals of different potentials to the first and second electrodes of one or more light-emitting units among the at least two light-emitting units included in a light-emitting part, may include:

[0121] In each light-emitting stage, power signals of different potentials can be provided to the first and second electrodes of one of the at least two light-emitting units, and power signals of the same potential can be provided to the first and second electrodes of the other light-emitting units, in order to drive the light-emitting unit to emit light and cause the other light-emitting units to stop emitting light.

[0122] Optionally, in this first embodiment, the method may further include a shutdown phase performed between two adjacent light-emitting sub-phases in at least two light-emitting sub-phases.

[0123] During the shutdown phase, a power signal with the same potential can be provided to the first and second electrodes of each of the at least two light-emitting units, so that each light-emitting unit stops emitting light.

[0124] Optionally, in the second embodiment, step 701 above, i.e., during the light-emitting stage, involves providing power signals of different potentials to the first and second electrodes of one or more of the at least two light-emitting units included in a light-emitting part, respectively. This may include:

[0125] During the light-emitting phase, power signals of different potentials are provided to the first and second electrodes of each of the at least two light-emitting units to drive each light-emitting unit to emit light simultaneously. That is, at least two light-emitting units comprising a light-emitting section can be driven to emit light simultaneously. This increases the brightness of the light-emitting section.

[0126] Optionally, in some embodiments, the potential difference of the power supply signals provided to the first and second electrodes of different light-emitting units can be the same. This allows each light-emitting unit to emit light with the same brightness, thus improving the uniformity of the light emission.

[0127] Optionally, with Figure 2 Taking the light-emitting part 00 shown as an example, Figure 8 A signal timing diagram of the first embodiment described above is shown. Figure 9 A signal timing diagram of the second embodiment described above is shown. (Combined with...) Figure 8 and Figure 9 The driving principles of the two embodiments described above are explained below:

[0128] 1. Combination Figure 8 It can be seen that in the first embodiment, the driving process may include a light-emitting stage T1, a power-off stage T2, and a light-emitting stage T3 executed sequentially.

[0129] 1.1 During the light-emitting stage T1, such as the first lighting on stage, i.e., 1 stDuring the Lighting On phase, the peripheral circuit can provide a high-potential VGH first power signal to one end of the series connection of the two light-emitting units 01-1 and 01-2 included in the light-emitting part 00 (i.e., the anode of light-emitting unit 01-1) through the first interface Port A, and can provide a low-potential VSS third power signal to the series connection node N of the two light-emitting units 01-1 and 01-2 included in the light-emitting part 00 (i.e., the cathode of light-emitting unit 01-1 / the anode of light-emitting unit 01-2) through the second interface Port B, and can provide a low-potential VSS second power signal to the other end of the series connection of the two light-emitting units 01-1 and 01-2 included in the light-emitting part 00 (i.e., the cathode of light-emitting unit 01-2) through the third interface Port C, and the low-potential VSS of the provided second power signal is the same as the low-potential VSS of the third power signal.

[0130] That is, during the light-emitting stage T1, the first interface Port A can be at high voltage, while the second interface Port B and the third interface Port C can both be at the same low voltage. Thus, combined with... Figure 10 Because the power supply signals received by the anode and cathode of light-emitting unit 01-1 have a voltage difference greater than 0 (transverse voltage is VGH-VSS), while the power supply signals received by the anode and cathode of light-emitting unit 01-2 do not have a voltage difference, light-emitting unit 01-1 can be turned on to emit light, and light-emitting unit 01-2 can be turned off to not emit light. That is, in this light-emitting stage T1, as... Figure 10 As shown, the light-emitting driving current can be controlled to flow from the anode of the light-emitting unit 01-1 into the cathode of the light-emitting unit 01-1, that is, from the first interface Port A into the second interface Port B, so that only one of the two light-emitting units 01-1 and 01-2 included in the light-emitting part 00 is driven to emit light.

[0131] 1.2 During the power-off phase T2, the peripheral circuit can provide a first power signal with a low potential VSS to one end of the series connection of the two light-emitting units 01-1 and 01-2 included in the light-emitting part 00 (i.e., the anode of the light-emitting unit 01-1) through the first interface Port A, and can provide a third power signal with a low potential VSS to the series connection node N of the two light-emitting units 01-1 and 01-2 included in the light-emitting part 00 (i.e., the cathode of the light-emitting unit 01-1 / the anode of the light-emitting unit 01-2) through the second interface Port B, and can provide a second power signal with a low potential VSS to the other end of the series connection of the two light-emitting units 01-1 and 01-2 included in the light-emitting part 00 (i.e., the cathode of the light-emitting unit 01-2) through the third interface Port C, and the low potential VSS of the first power signal, the second power signal, and the third power signal are all the same.

[0132] That is, during the shutdown phase T2, the first interface Port A, the second interface Port B, and the third interface Port C can all be at the same low voltage. Thus, since there is no voltage difference between the power signals received by the anode and cathode of light-emitting unit 01-1, and also no voltage difference between the power signals received by the anode and cathode of light-emitting unit 01-2, both light-emitting units 01-1 and 01-2 can be turned off and stop emitting light. In other words, during the shutdown phase T2, both light-emitting units 01-1 and 01-2 included in the light-emitting section 00 can be driven to stop emitting light.

[0133] 1.3. During the light-emitting stage T3, such as in the second Lighting On stage, i.e., 2... nd During the Lighting On phase, the peripheral circuit can provide a first power signal with a low potential VSS to one end of the series connection of the two light-emitting units 01-1 and 01-2 included in the light-emitting part 00 (i.e., the anode of light-emitting unit 01-1) through the first interface Port A. It can provide a third power signal with a high potential VGH to the series connection node N of the two light-emitting units 01-1 and 01-2 included in the light-emitting part 00 (i.e., the cathode of light-emitting unit 01-1 / the anode of light-emitting unit 01-2) through the second interface Port B. It can also provide a second power signal with a low potential VSS to the other end of the series connection of the two light-emitting units 01-1 and 01-2 included in the light-emitting part 00 (i.e., the cathode of light-emitting unit 01-2) through the third interface Port C. The low potential VSS of the provided second power signal is the same as the low potential VSS of the first power signal.

[0134] That is, during the light-emitting stage T3, the second interface Port B can be at high voltage, while the first interface Port A and the third interface Port C can both be at the same low voltage. Thus, combined with... Figure 10 Because the power signals received by the anode and cathode of light-emitting unit 01-1 have no voltage difference, while the power signals received by the anode and cathode of light-emitting unit 01-2 have a voltage difference greater than 0 (cross-voltage is VGH-VSS), light-emitting unit 01-1 can be turned off and not emit light, while light-emitting unit 01-2 can be turned on and emit light. That is, in this light-emitting stage T3, as... Figure 11 As shown, the light-emitting driving current can be controlled to flow from the anode of the light-emitting unit 01-2 into the cathode of the light-emitting unit 01-2, that is, from the second interface Port B into the third interface Port C, so as to drive only the other light-emitting unit 01-2 of the two light-emitting units 01-1 and 01-2 included in the light-emitting part 00 to emit light.

[0135] Thus, in the driving mode of this first embodiment, as described above, a counter unit can be added to calculate the light emission time of the two light-emitting units 01-1 and 01-2, thereby selecting the driving mode, averaging the aging time of the two light-emitting units 01-1 and 01-2, thereby improving the lifespan of each light-emitting unit 01, improving the product lifespan of the display panel, and thus improving the product quality of the display panel.

[0136] 2. Combining Figure 9 It can be seen that in the second embodiment, the driving process may include a light-emitting stage T1.

[0137] During a light-emitting stage T1, i.e., a Lighting On stage, the peripheral circuit can provide a high-potential VGH first power signal to one end of the series connection of the two light-emitting units 01-1 and 01-2 included in the light-emitting part 00 (i.e., the anode of light-emitting unit 01-1) through the first interface Port A, and can provide a high-potential VGH / 2 third power signal to the series connection node N of the two light-emitting units 01-1 and 01-2 included in the light-emitting part 00 (i.e., the cathode of light-emitting unit 01-1 / the anode of light-emitting unit 01-2) through the second interface Port B, and can provide a low-potential VSS second power signal to the other end of the series connection of the two light-emitting units 01-1 and 01-2 included in the light-emitting part 00 (i.e., the cathode of light-emitting unit 01-2) through the third interface Port C.

[0138] That is, during the Lighting On phase, the first interface (Port A) can be at high voltage, the third interface (Port C) at low voltage, and the second interface (Port B) at a voltage between high and low voltage. Thus, combined with... Figure 12 Because the power signals received by the anode and cathode of light-emitting unit 01-1 have a voltage difference greater than 0 (cross-voltage is VGH-VGH / 2), and the power signals received by the anode and cathode of light-emitting unit 01-2 have a voltage difference greater than 0 (cross-voltage is VGH / 2-VSS), light-emitting unit 01-1 can be turned on to emit light, and light-emitting unit 01-2 can also be turned on to emit light. That is, during this Lighting On stage, as... Figure 12 As shown, the light-emitting driving current can be controlled to flow from the anode of the light-emitting unit 01-1 into the cathode of the light-emitting unit 01-2, that is, from the first interface Port A into the third interface Port C, thereby driving the two light-emitting units 01-1 and 01-2 included in the light-emitting part 00 to emit light simultaneously.

[0139] Thus, in the driving mode of this second embodiment, the luminous brightness can be increased to twice that of the first embodiment while ensuring that the lifespan of the display panel remains unchanged, making the application scenarios more extensive.

[0140] It is understood that since this display driving method has essentially the same technical effect as the aforementioned display panel, for the sake of brevity, the technical effect of this display driving method will not be described again here.

[0141] This application also provides a display device. For example... Figure 13 As shown, the display device includes: peripheral circuitry 100, and a display panel 000 as described above.

[0142] The peripheral circuit 100 is connected to the light-emitting part 00 in the display panel 000 and is used to provide power signals to at least two light-emitting units 01 included in the light-emitting part 00 so as to drive the at least two light-emitting units 01 to emit light.

[0143] For example, combining Figure 1 The peripheral circuit 100 can be connected to at least two light-emitting units 01 included in the light-emitting part 00 through the first interface Port A, the second interface Port B and the third interface Port C, and provide a first power signal, a third power signal and a second power signal to the at least two light-emitting units 01 through the first interface Port A, the second interface Port B and the third interface Port C respectively.

[0144] Optionally, the display device can be an OLED display device or an AMOLED display device, etc. OLED display technology, benefiting from its high resolution and high contrast, has gained widespread market acceptance. Furthermore, the display device can also be a lighting device.

[0145] It is understandable that, since the display device has essentially the same technical effect as the aforementioned display panel, for the sake of brevity, the technical effect of the display device will not be described again here.

[0146] It should be understood that the terminology used in the embodiments of this application is for explaining the embodiments of this application and is not intended to limit this application. Unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains.

[0147] For example, in the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined. Similarly, words such as "a" or "one" do not indicate a quantity limitation, but rather indicate the presence of at least one. Words such as "including" or "comprising" mean that the element or object preceding "including" covers the element or object listed after "including" or "comprising" and its equivalents, and do not exclude other elements or objects. "Above," "below," "left," or "right" are used only to indicate relative positional relationships, and the relative positional relationship may also change accordingly when the absolute position of the described object changes.

[0148] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display panel, characterized in that, The display panel includes: a substrate, and a plurality of light-emitting portions located on one side of the substrate; at least one of the light-emitting portions includes: at least two light-emitting units, the at least two light-emitting units being stacked sequentially on one side of the substrate and connected in series via a first electrode and a second electrode; One end of the at least two light-emitting units connected in series is used to receive a first power signal, the other end of the at least two light-emitting units connected in series is used to receive a second power signal, and the serial node of any two light-emitting units in the at least two light-emitting units is used to receive a third power signal. Furthermore, each of the light-emitting units is used to emit light based on a power signal received by the first electrode and a power signal received by the second electrode; wherein the power signal includes at least one of the first power signal, the second power signal, and the third power signal.

2. The display panel according to claim 1, characterized in that, The substrate has polygons to surround and form a display area, and the plurality of light-emitting portions are located in the display area; At least one of the multiple sides has a set of signal interfaces, the set of signal interfaces including a first interface, at least one second interface and a third interface, the at least one second interface corresponding one-to-one with at least one serial node included in the at least two light-emitting units; The first interface is used to connect one end of the at least two light-emitting units connected in series to a peripheral circuit independent of the display panel, so as to receive the first power signal provided by the peripheral circuit; Each of the second interfaces is used to connect the corresponding serial node to the peripheral circuit to receive the third power signal provided by the peripheral circuit; The third interface is used to connect the other end of the at least two light-emitting units connected in series to the peripheral circuit to receive the second power signal provided by the peripheral circuit.

3. The display panel according to claim 2, characterized in that, Each side of the polygon has the set of signal interfaces.

4. The display panel according to claim 2 or 3, characterized in that, At least one of the light-emitting parts includes: two light-emitting units; the set of signal interfaces includes: one second interface.

5. The display panel according to any one of claims 1 to 3, characterized in that, At least one of the light-emitting parts includes: at least two sets of light-emitting units, each set of light-emitting units including the at least two light-emitting units; In each group of light-emitting units, one end of the series connection of at least two light-emitting units is connected in parallel with each other, and the other end of the series connection of at least two light-emitting units is connected in parallel with each other.

6. The display panel according to claim 5, characterized in that, The display panel includes at least two repair electrodes that correspond one-to-one with the at least two groups of light-emitting units, and each group of light-emitting units has an independent light-emitting opening; The at least two repair electrodes are respectively connected to the light-emitting opening of each group of light-emitting units through the first electrode of each light-emitting unit in each group of light-emitting units; Each of the repair electrodes is used to disconnect any one of the at least two groups of light-emitting units when the light emission of any one group of light-emitting units is abnormal, thereby breaking the connection between the one group of light-emitting units and other groups of light-emitting units.

7. The display panel according to claim 5, characterized in that, At least one of the light-emitting parts includes: two sets of light-emitting units.

8. The display panel according to any one of claims 1 to 3, characterized in that, The at least two light-emitting units include: A first electrode layer, at least two light-emitting layers, and a second electrode layer are sequentially stacked in a direction away from the substrate, and a third electrode layer is located between each pair of adjacent light-emitting layers; Wherein, the first electrode layer is used to receive the first power signal, the second electrode layer is used to receive the second power signal, and the third electrode layer is used to receive the third power signal.

9. The display panel according to claim 8, characterized in that, The material of at least one of the first electrode layer and the second electrode layer, and the material of the third electrode layer, includes: a transparent conductive material.

10. The display panel according to claim 8, characterized in that, The display panel also includes: A buffer layer, a passivation layer, and a pixel defining layer are stacked sequentially between the substrate and the at least two light-emitting units, in a direction away from the substrate; The pixel defining layer has a plurality of first defining openings, and the plurality of light-emitting parts are located in the plurality of first defining openings in a corresponding manner.

11. The display panel according to claim 10, characterized in that, The plurality of light-emitting portions are spaced apart, and at least one of the first electrode layer, the second electrode layer and the third electrode layer includes: a main electrode portion and an auxiliary electrode portion, wherein the sheet resistance of the auxiliary electrode portion is less than the sheet resistance of the main electrode portion; The main electrode portion is located in the first defining opening, and the auxiliary electrode portion is located in the interval region between two adjacent light-emitting portions. The auxiliary electrode portion is used to connect the main electrode portions of two adjacent light-emitting portions.

12. The display panel according to claim 11, characterized in that, The third electrode layer includes: a main electrode portion and an auxiliary electrode portion; The pixel defining layer also has a second defining opening located in the spaced region between two adjacent light-emitting portions, and the auxiliary electrode portion in the third electrode layer is located in the second defining opening; The auxiliary electrode portion in the third electrode layer includes a first metal layer, a first electrode layer, a second metal layer, and an auxiliary electrode layer stacked sequentially in a direction away from the buffer layer. The auxiliary electrode layer is used to disconnect the at least two light-emitting layers and the second electrode layer in two adjacent light-emitting portions in the second defining opening.

13. The display panel according to claim 12, characterized in that, The auxiliary electrode layer is shared with the first electrode layer.

14. The display panel according to any one of claims 1 to 3, characterized in that, The at least two light-emitting units are identical devices of the same color.

15. A display driving method for a display panel, characterized in that, For driving a display panel as described in any one of claims 1 to 14; the method includes: During the light-emitting stage, power signals with different potentials are provided to the first and second electrodes of one or more of the at least two light-emitting units included in a light-emitting part, so as to drive the one or more light-emitting units to emit light; wherein, the power signals include at least one of a first power signal, a second power signal and a third power signal.

16. The method according to claim 15, characterized in that, The light-emitting stage includes at least two light-emitting sub-stages that sequentially drive the at least two light-emitting units to emit light; During the light-emitting phase, providing power signals of different potentials to the first and second electrodes of one or more of the at least two light-emitting units in a light-emitting section includes: In each of the light-emitting sub-stages, power signals of different potentials are provided to the first and second electrodes of one of the at least two light-emitting units, and power signals of the same potential are provided to the first and second electrodes of the other light-emitting units, in order to drive the light-emitting unit to emit light and cause the other light-emitting units to stop emitting light.

17. The method according to claim 16, characterized in that, The method further includes: a shutdown phase performed between two adjacent light-emitting sub-phases in the at least two light-emitting sub-phases; During the shutdown phase, a power signal with the same potential is provided to the first and second electrodes of each of the at least two light-emitting units, so that each light-emitting unit stops emitting light.

18. The method according to claim 15, characterized in that, During the light-emitting phase, providing power signals of different potentials to the first and second electrodes of one or more of the at least two light-emitting units in a light-emitting section includes: During the light-emitting phase, power signals of different potentials are provided to the first and second electrodes of each of the at least two light-emitting units to drive each light-emitting unit to emit light simultaneously.

19. The method according to any one of claims 15 to 18, characterized in that, The potential difference of the power supply signals provided to the first and second electrodes of the different light-emitting units is the same.

20. A display device, characterized in that, The display device includes: peripheral circuitry, and a display panel as described in any one of claims 1 to 14; The peripheral circuit is connected to the light-emitting part in the display panel and is used to provide power signals to at least two light-emitting units included in the light-emitting part so as to drive the at least two light-emitting units to emit light.

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