Display panel, display device

Abstract

The present application relates to a display panel and a display device, including a light-emitting drive circuit, a scan drive circuit, a first drive power line, a second drive power line, and at least one first connecting line. The light-emitting drive circuit has multiple light-emitting drive units, and the output end of the light-emitting drive unit is used to output a light-emitting control signal. The first drive power line is respectively connected to each light-emitting drive unit and is used to transmit a first voltage signal to each light-emitting drive unit. The scan drive circuit has multiple cascaded scan drive units, and the output end of the scan drive unit is used to output a scan signal. The second drive power line is respectively connected to each scan drive unit and is used to transmit a first voltage signal to each scan drive unit. Both ends of the first connecting line are respectively connected to the first drive power line and the second drive power line. The first connecting line is located in a non-display area where the light-emitting drive circuit and the scan drive circuit are located. The display panel of the present application has good picture uniformity.

Description

Technical Field

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

[0002] With the development of display technology, people have higher and higher requirements for the performance of display products. The brightness adjustment mode of display panels has gradually changed from DC (Direct Current) mode to PWM (Pulse Width Modulation) mode.

[0003] However, the gate drive circuit in PWM mode is prone to poor screen uniformity in display products. Summary of the Invention

[0004] Based on this, it is necessary to provide a display panel and a display device with better picture uniformity to address the above technical problems.

[0005] In a first aspect, the present application provides a display panel, comprising:

[0006] A light-emitting driving circuit, comprising a plurality of cascaded light-emitting driving units, wherein the output end of each light-emitting driving unit is used to output a light-emitting control signal;

[0007] A scan driving circuit comprising a plurality of cascaded scan driving units, wherein the output terminals of the scan driving units are used to output scan signals;

[0008] a first driving power line, connected to each of the light-emitting driving units, for transmitting a first voltage signal to each of the light-emitting driving units;

[0009] a second driving power line, connected to each of the scan driving units, for transmitting the first voltage signal to each of the scan driving units;

[0010] At least one first connecting line, wherein both ends of the first connecting line are respectively connected to the first driving power line and the second driving power line; wherein the first connecting line is located in the non-display area where the light-emitting driving circuit and the scanning driving circuit are located.

[0011] In a second aspect, the present application provides a display device, characterized in that the display device includes the display panel as described in the above embodiment.

[0012] The above-mentioned display panel and display device include a light-emitting drive circuit, a scan drive circuit, a first drive power line, a second drive power line, and at least one first connecting line. The light-emitting drive circuit has multiple light-emitting drive units, and the output end of the light-emitting drive unit is used to output a light-emitting control signal. The first drive power line is respectively connected to each light-emitting drive unit and is used to transmit a first voltage signal to each light-emitting drive unit. The scan drive circuit has multiple cascaded scan drive units, and the output end of the scan drive unit is used to output a scan signal. The second drive power line is respectively connected to each scan drive unit and is used to transmit a first voltage signal to each scan drive unit. The two ends of the first connecting line are respectively connected to the first drive power line and the second drive power line. The first connecting line is located in the non-display area where the light-emitting drive circuit and the scan drive circuit are located. In this application, the first drive power line and the second drive power line are connected through the first connecting line, and the magnitude of the first voltage signal on the first drive power line is pulled to the same magnitude as the first voltage signal on the second drive power line through the second drive power line, thereby alleviating the voltage drop on the first drive power line and thereby improving the picture uniformity of the display product. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 is a schematic diagram of a display panel in one embodiment;

[0015] Figure 2 is a schematic diagram of a display panel in another embodiment;

[0016] Figure 3 is a circuit structure diagram of a light-emitting driving unit in one embodiment;

[0017] Figure 4 is a circuit structure diagram of a scan driving unit in one embodiment;

[0018] Figure 5 is a schematic diagram of a display panel in yet another embodiment;

[0019] Figure 6 is a schematic diagram of a display panel in yet another embodiment;

[0020] Figure 7 is a schematic diagram of a display panel in yet another embodiment;

[0021] Figure 8is a schematic diagram of a display panel in yet another embodiment;

[0022] Figure 9 is a schematic diagram of a display panel in yet another embodiment;

[0023] Figure 10 is a schematic diagram of a display panel in yet another embodiment;

[0024] Figure 11 is a cross-sectional schematic diagram of a display panel in one embodiment;

[0025] Figure 12 is a cross-sectional schematic diagram of a display panel in another embodiment;

[0026] Figure 13 is a cross-sectional schematic diagram of a display panel in yet another embodiment;

[0027] Figure 14 FIG. 1 is a schematic diagram of a display device in one embodiment.

[0028] Explanation of Reference Numerals: 100 - display panel, 10 - light-emitting driving circuit, 11 - light-emitting driving unit, 20 - scan driving circuit, 21 - scan driving unit, 31 - first driving power line, 32 - second driving power line, 33 - first connecting wire, 34 - third driving power line, 35 - fourth driving power line, 36 - second connecting wire, 40 - pixel circuit, 51 - substrate, 52 - array layer, 53 - array layer, 54 - connecting wire layer. DETAILED DESCRIPTION

[0029] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0031] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Furthermore, when a layer is referred to as being "under" another layer, it can be directly under or one or more intervening elements may also be present. It will also be understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or one or more intervening elements may also be present.

[0032] In the case of using “including,” “having,” and “comprising” described herein, another component may be added unless a clear limiting term such as “only,” “consisting of,” etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as having one number.

[0033] It should be understood that although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of this application.

[0034] It should also be understood that when interpreting an element, even if not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately," "approximately," or "substantially" can mean within one or more standard deviations, and is not limited here.

[0035] Furthermore, in the specification, the phrase “planar distribution diagram” refers to a drawing when the target portion is viewed from above, and the phrase “cross-sectional diagram” refers to a drawing when a section taken by vertically cutting the target portion is viewed from the side.

[0036] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0037] As described in the background technology section, in order to improve the display performance of the display panel, the brightness adjustment mode of the display panel is gradually transformed from the DC mode to the PWM mode. The PWM mode includes a low pulse mode and a high pulse mode. In the related art, the light-emitting drive circuit is usually controlled by a multi-pulse mode. However, when the light-emitting drive circuit is controlled by the multi-pulse mode, the problem of poor screen uniformity of the display product is prone to occur. The inventor found that the reason for the above phenomenon is that when the light-emitting drive circuit adopts the multi-pulse mode, the light-emitting drive circuit drives multiple rows of pixel circuits at the same time, resulting in a large load on the light-emitting drive circuit, resulting in a large voltage drop on the first drive power line that provides the first voltage signal to the light-emitting drive circuit, which in turn leads to a large difference in the potential of the light-emitting drive signal output by each light-emitting drive unit in the light-emitting drive circuit, resulting in a difference in the drive current in each pixel circuit, affecting the brightness uniformity of the display panel.

[0038] Based on the above technical problems, the inventors have found that the control mode of the scanning drive circuit that provides the scanning signal to each pixel circuit is a low pulse mode, that is, the scanning drive circuit only drives one row of pixel circuits at the same time, the load borne by the scanning drive circuit is relatively small, and the voltage drop on the second driving power line that provides the first voltage signal to the scanning drive circuit is relatively small. The present application sets at least one first connecting line connected to the first driving power line and the second driving power line respectively. Since the voltage drop on the second driving power line is relatively small, the first voltage signal on the second driving power line is closer to the theoretical value of the first voltage signal. Therefore, the first voltage signal on the second driving power line can pull the first voltage signal on the first driving power line closer to the theoretical value of the first voltage signal, thereby alleviating the voltage drop on the first driving power line, thereby alleviating the difference in the light-emitting drive signals output by each light-emitting drive unit in the light-emitting drive circuit, and improving the brightness uniformity of the display panel.

[0039] The above is the core concept of this application. The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of this application.

[0040] In an exemplary embodiment, see Figure 1 and Figure 2 The present application provides a display panel 100, which has a display area AA and a non-display area FA that at least partially surrounds the display area AA. The display panel includes: a light-emitting driving circuit 10, a scanning driving circuit 20, a first driving power line 31, a second driving power line 32 and at least one first connecting line 33.

[0041] The light-emitting drive circuit 10 includes a plurality of cascaded light-emitting drive units 11, the output end of each light-emitting drive unit 11 being used to output a light-emitting control signal. The scanning drive circuit 20 includes a plurality of cascaded scanning drive units 21, the output end of each scanning drive unit 21 being used to output a scanning signal. A first driving power line 31 is connected to each light-emitting drive unit 11, respectively, for transmitting a first voltage signal to each light-emitting drive unit 11. A second driving power line 32 is connected to each scanning drive unit 21, respectively, for transmitting a first voltage signal to each scanning drive unit 21. At least one first connecting line 33 is provided, and the two ends of the first connecting line 33 are connected to the first driving power line 31 and the second driving power line 32, respectively, wherein the first connecting line 33 is located in the non-display area FA where the light-emitting drive circuit 11 and the scanning drive circuit 21 are located.

[0042] It can be understood that there are multiple rows of pixel circuits 40 in the display area AA of the display panel 100, and each light-emitting driving unit 11 and each scanning driving unit 21 are located in the non-display area FA on one side of the display area AA. The light-emitting driving unit 11 can provide a light-emitting control signal for the pixel circuit 40, and the scanning driving unit 21 can provide a scanning signal for the pixel circuit 40.

[0043] In an example, see Figure 1 , each light-emitting driving unit 11 provides a light-emitting control signal for a row of pixel circuits 40, and each scanning driving unit 21 provides a scanning signal for a row of pixel circuits 40. In another example, see Figure 2 Each light-emitting driving unit 11 provides a light-emitting control signal to two adjacent rows of pixel circuits 40 , and each scanning driving unit 21 provides a scanning signal to one row of pixel circuits 40 .

[0044] In a data refresh frame, the light-emitting driving circuit 10 may include N pulses. When the light-emitting control signal in a data refresh frame includes only 1 pulse, that is, N=1, the light-emitting driving circuit 10 is in a low-pulse mode. When each light-emitting driving unit 11 provides a light-emitting control signal for a row of pixel circuits 40, the light-emitting driving circuit 10 only needs to drive one row of pixel circuits 40 at the same time; when each light-emitting driving unit 11 provides a light-emitting control signal for two adjacent rows of pixel circuits 40, the light-emitting driving circuit 10 only needs to drive two rows of pixel circuits 40 at the same time.

[0045] When the light-emitting driving circuit 10 includes multiple pulses in a data refresh frame, that is, N>1, the light-emitting driving circuit 10 is in high pulse mode. When each light-emitting driving unit 11 provides a light-emitting control signal for a row of pixel circuits 40 respectively, the light-emitting driving circuit 10 needs to drive N rows of pixel circuits 40 at the same time; when each light-emitting driving unit 11 provides a light-emitting control signal for two adjacent rows of pixel circuits 40 respectively, the light-emitting driving circuit 10 needs to drive 2N rows of pixel circuits 40 in the same time frame.

[0046] It can be seen that when the light-emitting driving circuit 10 is in the low-pulse mode, the number of rows of pixel circuits 40 that the light-emitting driving circuit 10 needs to drive at the same time is relatively small, while when the light-emitting driving circuit 10 is in the high-pulse mode, the number of rows of pixel circuits 40 that the light-emitting driving circuit 10 needs to drive at the same time is relatively large, resulting in a greater load on the light-emitting driving circuit 10 in the high-pulse mode. The first driving power line 31 is used to provide the first voltage signal to the light-emitting driving circuit 10. When the load on the light-emitting driving circuit 10 is greater, the voltage drop on the first driving power line 31 is greater. Therefore, when the light-emitting driving circuit 10 is in the high-pulse mode, the magnitude of the first voltage signal provided by the first driving power line 31 to each light-emitting driving unit 11 varies greatly, and thus the potential magnitude of the light-emitting control signal output by each light-emitting driving unit 11 varies greatly, resulting in a large difference in the driving current in each pixel circuit and poor brightness uniformity of the display panel.

[0047] Taking one scan drive unit driving one as an example, each scan drive unit 21 provides a scan signal for a row of pixel circuits 40. In a data refresh frame, the scan drive circuit 20 only includes one pulse, that is, the scan drive circuit 20 only needs to drive a row of pixel circuits 40 at the same time, so the load of the scan drive circuit 20 is small, and the voltage drop on the second drive power line 32 that provides the first voltage signal to the scan drive circuit 20 is small. The magnitude of the first voltage signal provided by the second drive power line 32 to each scan drive unit 21 is almost close to the set value of the first voltage signal, and the magnitude of the first voltage signal received by each scan drive unit 21 is almost the same. Therefore, a first connecting line 33 is provided in the present application, and the first drive power line 31 is connected to the second drive power line 32 through the first connecting line 33, so that the first voltage signal on the second drive power line 32 pulls the first voltage signal on the first drive power line 31 to be close to the set value of the first voltage signal, and thus the difference in the potential of the light-emitting control signal output by each light-emitting drive unit 11 is small, so that the difference in the driving current in each pixel circuit is small, thereby improving the brightness uniformity of the display panel.

[0048] The above-mentioned display panel includes a light-emitting driving circuit, a scan driving circuit, a first driving power line, a second driving power line and at least one first connecting line. The light-emitting driving circuit has multiple light-emitting driving units, and the output end of the light-emitting driving unit is used to output a light-emitting control signal. The first driving power line is respectively connected to each light-emitting driving unit and is used to transmit a first voltage signal to each light-emitting driving unit. The scan driving circuit has multiple cascaded scan driving units, and the output end of the scan driving unit is used to output a scan signal. The second driving power line is respectively connected to each scan driving unit and is used to transmit a first voltage signal to each scan driving unit. The two ends of the first connecting line are respectively connected to the first driving power line and the second driving power line. The first connecting line is located in the non-display area where the light-emitting driving circuit and the scan driving circuit are located. In this application, the first driving power line and the second driving power line are connected through the first connecting line, and the magnitude of the first voltage signal on the first driving power line is pulled to the same as the magnitude of the first voltage signal on the second driving power line through the second driving power line, thereby alleviating the voltage drop on the first driving power line and thereby improving the picture uniformity of the display product.

[0049] In an example, see Figure 3 and Figure 4 , Figure 3 This is a circuit diagram of a light-emitting drive unit. Figure 3 As can be seen from the figure, the light-emitting driving unit 11 includes transistors M1~M11, capacitors C1~C4, a first power supply terminal P1 and a second power supply terminal P2. In this example, the first power supply terminal P1 of the light-emitting driving unit is used as a port for receiving the first electrical signal VGH, and the second power supply terminal P2 of the light-emitting driving unit is used as a port for receiving the second electrical signal VGL. Among them, the first end of the transistor M9, the first end of the capacitor C2, the first end of the transistor M8, the first end of the capacitor C4 and the first end of the transistor M5 are all connected to the first power supply terminal P1 to receive the first electrical signal VGH through the first power supply terminal P1, the second end of the transistor M10 and the second end of the transistor M3 are both connected to the second power supply terminal P2 to receive the second electrical signal VGL through the second power supply terminal P2, and the first end of the transistor M10 is connected to the second end of the transistor M9. By controlling the on and off of each transistor in the light-emitting driving unit 11, the light-emitting control signal EM output by the output node N1 can be controlled to be the first electrical signal VGH or the second electrical signal VGL.

[0050] Figure 4 is a circuit structure diagram of a scan driving unit 21, from Figure 4As can be seen, the scan driving unit 21 includes transistors T1-1 to T8, capacitors C5 to C6, a first power supply terminal P3, and a second power supply terminal P4. In this example, the first power supply terminal P3 of the scan driving unit can be a port for receiving the first electrical signal VGH, and the second power supply terminal P4 of the scan driving unit can be a port for receiving the second electrical signal VGL. The first end of the transistor T7, the first end of the capacitor C5, and the first end of the transistor T5 are all connected to the first power supply terminal P3 to receive the first electrical signal VGH through the first power supply terminal P3. The first end of the transistor T3 and the control end of the transistor T6 are both connected to the second power supply terminal P4 to receive the second electrical signal VGL through the second power supply terminal P4. The second end of the transistor T7 is connected to the first end of the transistor T8, and the second end of the transistor T7 is used to receive the third electrical signal XCK. By controlling the on and off of each transistor in the scan driving unit 21, the scan signal Gn output by the output node N2 can be controlled to be the first electrical signal VGH or the third electrical signal XCK. The first electrical signal VGH is a high-level signal, the second electrical signal VGL is a low-level signal, and the third electrical signal XCK is a pulse signal.

[0051] In an application, the first voltage signal may be one of the first electrical signal VGH or the second electrical signal VGL. When the first voltage signal is the first electrical signal VGH, the first power supply terminal P1 of the light-emitting driving unit 11 is connected to the first driving power line 31, and the first power supply terminal P3 of the scan driving unit 21 is connected to the second driving power line 32. When the first voltage signal is the second electrical signal VGL, the second power supply terminal P2 of the light-emitting driving unit 11 is connected to the first driving power line 31, and the second power supply terminal P4 of the scan driving unit 21 is connected to the second driving power line 32.

[0052] In an exemplary embodiment, the first driving power line 31 is respectively connected to the first power terminal P1 of each light-emitting driving unit 11, and the second driving power line 32 is respectively connected to the first power terminal P3 of each scanning driving unit 21, wherein the first end of the first connecting line 33 is connected to the first node of the first driving power line 31, and the second end of the first connecting line 33 is connected to the first node of the second driving power line 32, and the first node of the first driving power line 31 is connected to the first power terminal P1 of the i-th level light-emitting driving unit 11; the first node of the second driving power line 32 is connected to the first power terminal P3 of the i-th level scanning driving unit 21; wherein 1≤i≤n, wherein n is the number of levels of the scanning driving unit or the light-emitting driving unit.

[0053] In this example, see Figure 5Each light-emitting driving unit 11 provides a light-emitting control signal for a row of pixel circuits 40, and each scanning driving unit 21 provides a scanning signal for a row of pixel circuits 40. When the display panel includes n rows of pixel circuits 40, the display panel includes n levels of light-emitting driving units 11 and n levels of scanning driving units 21. The following description takes the first voltage signal as the first electrical signal VGH as an example. The first nodes S1 of the first driving power line 31 are respectively connected to the first power terminal P1 of the corresponding light-emitting driving unit 11, that is, the first node S1 of the first driving power line 31 is connected to the first ends of the transistor M5, the capacitor C2, the capacitor C4, the transistor M8 and the transistor M9 in the light-emitting driving unit 11 through the corresponding first power terminal P1, so as to provide the first electrical signal VGH to the light-emitting driving unit 11. At the same time, the first nodes S2 of the second driving power line 32 are respectively connected to the first power terminal P3 of the corresponding scan driving unit 21, that is, the first node S2 of the second driving power line 32 is connected to the first ends of the transistor T2, the capacitor C5 and the transistor T7 in the scan driving unit 21 through the corresponding first power terminal P3, so as to provide the first electrical signal VGH to the scan driving unit 21.

[0054] When the light-emitting driving circuit 10 is in the high pulse mode, a large voltage drop is generated on the first driving power line 31, resulting in a large difference in the potential of each first node S1 on the first driving power line 31, which in turn causes the first voltage signal received by each light-emitting driving unit 11 to have a large difference. For example, the theoretical value of the first voltage signal is 5V. Since a large voltage drop is generated on the first driving power line 31, the first voltage signal received by the first-stage light-emitting driving unit 11 may be 5V, the first voltage signal received by the second-stage light-emitting driving unit 11 may be 4.95V, the first voltage signal received by the third-stage light-emitting driving unit 11 may be 4.9V, ..., the first voltage signal received by the i-th stage light-emitting driving unit 11 may be 4.7V, ..., and the first voltage signal received by the n-th stage light-emitting driving unit 11 may be 4.5V. Since the scan drive circuit 20 is in low pulse mode, the potential difference at each first node S2 on the second drive power line 32 is small. Without considering the voltage drop caused by the resistance of the second drive power line 32 itself, there is no difference in the potential at each first node S2 on the second drive power line 32. For example, the potential at each first node S2 on the second drive power line 32 is 5V. By setting the first end of the first connecting line 33 to be connected to the first node S1 of the first drive power line 31, and the second end of the first connecting line 33 to be connected to the first node S2 of the second drive power line 32, the potential of each first node S2 can be correspondingly raised, thereby reducing or eliminating the potential difference of each first node S1 on the first drive power line 31, thereby ensuring that the difference in the magnitude of the first voltage signal received by each light-emitting drive unit 11 is small or non-existent, and is close to the theoretical value of the first voltage signal, thereby improving the uniformity of the display panel.

[0055] In the application, m first connection lines 33 can be set in the display panel, and the number m of the first connection lines 33 can be less than or equal to the number n of the scan driving unit 21 or the light-emitting driving unit 11, that is, m≤n, and the first end of each first connection line 33 is different from the connection node of the first driving power line 31, and the second end of each first connection line 33 is different from the connection node of the second driving power line 32. For example, the display panel includes 2000 rows of pixel units, that is, the display panel includes 2000 levels of light-emitting driving units 11 and 2000 levels of scanning driving units 21. 2000 first nodes S1 can be set on the first driving power line 31, and 2000 first nodes S2 can be set on the second driving power line 32. Each first node S1 on the first driving power line 31 is respectively connected to the first power supply end P1 of each light-emitting driving unit 11, and each first node S2 of the second driving power line 32 is respectively connected to the first power supply end P3 of each scanning driving unit 21. Then, each first node S1 of the first driving power line 31 and each first node S2 of the second driving power line 32 are correspondingly connected through the first connecting line 33. In this way, 2000 first connecting lines 33 can be set in the display panel.

[0056] In another example, 20 first nodes S1 can be set on the first driving power line 31, and 20 first nodes S2 can be set on the second driving power line 32. The first first node S1 on the first driving power line 31 is connected to the first power supply terminal P1 of the 100th-level light-emitting driving unit 11, and the second first node S1 on the first driving power line 31 is connected to the first power supply terminal P1 of the 200th-level light-emitting driving unit 11, ..., the 20th first node S1 on the first driving power line 31 is connected to the first power supply terminal P1 of the 2000th-level light-emitting driving unit 11, and similarly, the 20th first node S1 on the first driving power line 31 is connected to the first power supply terminal P1 of the 2000th-level light-emitting driving unit 11. The first first node S2 on the line 32 is connected to the first power supply terminal P3 of the 100th-level scan driving unit 21, the second first node S2 on the second driving power line 32 is connected to the first power supply terminal P3 of the 200th-level scan driving unit 21, ..., the 20th first node S2 on the second driving power line 32 is connected to the first power supply terminal P3 of the 200th-level scan driving unit 21, and then the first nodes S1 of the first driving power line 31 and the first nodes S2 of the second driving power line 32 are correspondingly connected through the first connecting line 33, so that 20 first connecting lines 33 can be set in the display panel.

[0057] In an exemplary embodiment, the first driving power line 31 is respectively connected to the first power terminal P1 of each light-emitting driving unit 11, and the second driving power line 32 is respectively connected to the first power terminal P3 of each scanning driving unit 21, wherein the first end of the first connecting line 33 is connected to the first node S1 of the first driving power line 31, and the second end of the first connecting line 33 is connected to the first node S2 of the second driving power line 32, and the first node S1 of the first driving power line 31 is connected to the first power terminal of the i-th level light-emitting driving unit 11; the first node S2 of the second driving power line 32 is connected to the first power terminal of the 2i-th level scanning driving unit 21; wherein 1≤i≤n, wherein n is the number of levels of the light-emitting driving unit, and 2n is the number of levels of the scanning driving unit.

[0058] In this example, see Figure 6 , each light-emitting driving unit 11 provides a light-emitting control signal to the adjacent row of pixel circuits 40, and each scanning driving unit 21 provides a scanning signal to a row of pixel circuits 40. In the case where the display panel includes 2n rows of pixel circuits 40, the display panel includes n levels of light-emitting driving units 11 and 2n levels of scanning driving units 21. Still taking the first voltage signal as the first electrical signal VGH as an example for explanation, each first node S1 of the first driving power supply line 31 is respectively connected to the first power supply terminal P1 of the corresponding light-emitting driving unit 11 to provide the first electrical signal VGH to each light-emitting driving unit 11. At the same time, each second driving power supply line 32 is respectively connected to the first power supply terminal P3 of the corresponding scanning driving unit 21 to provide the first electrical signal VGH to each scanning driving unit 21. In the present application, by setting the first end of the first connecting line 33 to be connected to the first node S1 of the first driving power line 31, and the second end of the first connecting line 33 to be connected to the first node S2 of the second driving power line 32, each first node S2 can correspondingly pull up the potential of each first node S1, thereby reducing or eliminating the potential difference of each first node S1 on the first driving power line 31, thereby ensuring that the difference in the size of the first voltage signal received by each light-emitting driving unit 11 is small or non-existent, and is close to the theoretical value of the first voltage signal, thereby improving the uniformity of the display panel.

[0059] In an application, m first connection lines 33 may be provided in the display panel. The number m of the first connection lines 33 may be less than or equal to the number 2n of the levels of the scan drive units 21, that is, m≤2n, and the first end of each first connection line 33 is respectively different from the connection node of the first drive power line 31, and the second end of each first connection line 33 is respectively different from the connection node of the second drive power line 32. For example, the display panel includes 2000 rows of pixel units, that is, the display panel includes 1000 levels of light-emitting drive units 11 and 2000 levels of scan drive units 21. 1000 first nodes S1 may be provided on the first drive power line 31, and 1000 first nodes S2 may be provided on the second drive power line 32. Each first node S1 on the first drive power line 31 is respectively connected to the first power terminal P1 of each light-emitting drive unit 11, and each first node S2 on the second drive power line 32 is respectively connected to the first power terminal P3 of some scan drive units 21. For example, the second drive power line 32 is respectively connected to the first power terminal P3 of some scan drive units 21. The first first node S2 of the line 32 is connected to the first power supply terminal P3 of the second-level scan driving unit 21, the second first node S2 of the second driving power line 32 is connected to the first power supply terminal P3 of the fourth-level scan driving unit 21, ..., the 1000th first node S2 of the second driving power line 32 is connected to the first power supply terminal P3 of the 2000th-level scan driving unit 21, and then the first nodes S1 of the first driving power line 31 and the first nodes S2 of the second driving power line 32 are correspondingly connected through the first connecting line 33, so that 1000 first connecting lines 33 can be set in the display panel.

[0060] In an exemplary embodiment, see Figure 7 and Figure 8 The display panel 100 further includes: a third driving power line 34 , a fourth driving power line 35 and at least one second connecting line 36 .

[0061] The third driving power lines 34 are connected to each light-emitting driving unit 11, respectively, for transmitting a second voltage signal to each light-emitting driving unit 11. The fourth driving power lines 35 are connected to each scan driving unit 21, respectively, for transmitting a second voltage signal to each scan driving unit 21. The ends of the second connecting trace 36 are connected to the third driving power lines 34 and the fourth driving power lines 35, respectively. The second connecting trace 36 is located in the non-display area where the light-emitting driving circuit 10 and the scan driving circuit 20 are located. One of the first voltage signal and the second voltage signal is a high-level signal, and the other is a low-level signal.

[0062] Figure 7 A circuit structure diagram of a display panel in which each light-emitting driving unit 11 provides a light-emitting control signal to a row of pixel circuits 40, and each scan driving unit 21 provides a scan signal to a row of pixel circuits 40, Figure 8 The circuit structure of the display panel is shown in Figure 1, where each light-emitting driving unit 11 provides light-emitting control signals to two adjacent rows of pixel circuits 40, and each scan driving unit 21 provides scan signals to one row of pixel circuits 40. When the light-emitting driving circuit 10 is in high-pulse mode, and each light-emitting driving unit 11 provides light-emitting control signals to one row of pixel circuits 40, the light-emitting driving circuit 10 needs to drive N rows of pixel circuits 40 at the same time. When each light-emitting driving unit 11 provides light-emitting control signals to two adjacent rows of pixel circuits 40, the light-emitting driving circuit 10 needs to drive 2N rows of pixel circuits 40 at the same time.

[0063] Similarly, there is a large voltage drop on the third driving power line 34 that provides the second voltage signal to the light-emitting driving circuit 10. The second voltage signals provided by the third driving power line 34 to each light-emitting driving unit 11 have large differences in magnitude. As a result, the potentials of the light-emitting control signals output by each light-emitting driving unit 11 have large differences in magnitude. As a result, there are large differences in the driving currents of each pixel circuit, and the brightness uniformity of the display panel is poor.

[0064] Therefore, a second connecting line 36 is provided in the present application, and the third driving power line 34 is connected to the fourth driving power line 35 through the second connecting line 36, so that the second voltage signal on the fourth driving power line 35 pulls the second voltage signal on the third driving power line 34 to a value close to the set value of the second voltage signal, thereby making the difference in the potential of the light-emitting control signal output by each light-emitting driving unit 11 small, so that the difference in the driving current in each pixel circuit is small, thereby improving the brightness uniformity of the display panel.

[0065] In an exemplary embodiment, see Figure 9 , the third driving power line 34 is respectively connected to the second power supply terminal P2 of each light-emitting driving unit 44, and the fourth driving power line 35 is respectively connected to the second power supply terminal P4 of each scanning driving unit 21, wherein the first end of the second connecting line 36 is connected to the first node S3 of the third driving power line 34, and the second end of the second connecting line 36 is connected to the first node S4 of the fourth driving power line 35, and the first node S3 of the third driving power line 34 is connected to the second power supply terminal of the i-th level light-emitting driving unit 11; the first node S4 of the fourth driving power line 35 is connected to the second power supply terminal of the i-th level scanning driving unit 21; wherein, 1≤i≤n, wherein n is the number of levels of the scanning driving unit or the light-emitting driving unit.

[0066] In this embodiment, the first voltage signal is the first electrical signal VGH, and the second voltage signal is the second electrical signal VGL, that is, the first voltage signal is a high level signal and the second voltage signal is a low level signal. Figure 3 、 Figure 4and Figure 9 , each first node S3 of the third driving power line 34 is respectively connected to the second power terminal P2 of the corresponding light-emitting driving unit 11, that is, the first node S3 of the third driving power line 34 is connected to the second end of the transistor M3 and the second end of the transistor M10 in the light-emitting driving unit 11 through the corresponding second power terminal P2, so as to provide the second electrical signal VGL to the light-emitting driving unit 11. At the same time, each first node S4 of the fourth driving power line 35 is respectively connected to the second power terminal P4 of the corresponding scan driving unit 21, that is, the first node S2 of the second driving power line 32 is connected to the second end of the transistor T3 and the control end of the transistor T6 in the corresponding scan driving unit 21 through the second power terminal P4, so as to provide the second electrical signal VGL to the scan driving unit 21.

[0067] When the light-emitting driving circuit 10 is in the high-pulse mode, a large voltage drop is generated on the third driving power line 34, resulting in a large difference in the potential of each first node S3 on the third driving power line 34, which in turn causes a large difference in the magnitude of the second voltage signal received by each light-emitting driving unit 11. For example, the theoretical value of the second voltage signal is -5V. Due to the large voltage drop generated on the first driving power line 31, the second voltage signal received by the first-stage light-emitting driving unit 11 may be -5V, the second voltage signal received by the second-stage light-emitting driving unit 11 may be -4.95V, the second voltage signal received by the third-stage light-emitting driving unit 11 may be -4.9V, ..., the second voltage signal received by the i-th stage light-emitting driving unit 11 may be -4.7V, ..., and the second voltage signal received by the n-th stage light-emitting driving unit 11 may be -4.5V. Since the scan driving circuit 20 is in the low pulse mode, the potential difference at each first node S4 on the fourth driving power line 35 is small. Without considering the voltage drop caused by the resistance of the fourth driving power line 35 itself, there is no difference in the potential at each first node S4 on the fourth driving power line 35. For example, the potential at each first node S4 on the fourth driving power line 35 is -5V. By setting the first end of the second connecting line 36 to be connected to the first node S3 of the third driving power line 34, and the second end of the second connecting line 36 to be connected to the first node S4 of the fourth driving power line 35, the potential of each first node S4 can be correspondingly lowered, thereby reducing or eliminating the potential difference of each first node S3 on the third driving power line 34, thereby ensuring that the difference in the magnitude of the second voltage signal received by each light-emitting driving unit 11 is small or non-existent, and is close to the theoretical value of the second voltage signal, thereby improving the uniformity of the display panel.

[0068] In the application, k second connecting lines 36 can be set in the display panel, and the number k of the second connecting lines 36 can be less than or equal to the number n of the scan driving unit 21 or the light-emitting driving unit 11, that is, m≤n, and the first end of each second connecting line 36 is different from the connection node of the third driving power line 34, and the second end of each second connecting line 36 is different from the connection node of the fourth driving power line 35. Exemplarily, the display panel includes 2000 rows of pixel units, that is, the display panel includes 2000 levels of light-emitting driving units 11 and 2000 levels of scanning driving units 21. 2000 first nodes S3 can be set on the third driving power line 34, and 2000 first nodes S4 can be set on the fourth driving power line 35. Each first node S3 on the third driving power line 34 is respectively connected to the second power supply terminal P2 of each level of light-emitting driving unit 11, and each first node S4 of the fourth driving power line 35 is respectively connected to the second power supply terminal P4 of each level of scanning driving unit 21. Then, each first node S3 on the third driving power line 34 and each first node S4 on the fourth driving power line 35 are correspondingly connected through multiple second connecting lines 36. In this way, 2000 second connecting lines 36 can be set in the display panel.

[0069] In another example, 20 first nodes S3 can be set on the third driving power line 34, and 20 first nodes S4 can be set on the fourth driving power line 35. The first first node S3 on the third driving power line 34 is connected to the second power supply terminal P2 of the 100th-level light-emitting driving unit 11, and the second first node S3 on the third driving power line 34 is connected to the second power supply terminal P2 of the 200th-level light-emitting driving unit 11, ..., the 20th first node S3 on the third driving power line 34 is connected to the second power supply terminal P2 of the 2000th-level light-emitting driving unit 11, and similarly, the fourth driving power line 35 is connected to the 200th first node S3 on the third driving power line 34. The first first node S4 on the source line 35 is connected to the second power supply terminal P4 of the 100th-level scan driving unit 21, the second first node S4 on the fourth driving power line 35 is connected to the second power supply terminal P4 of the 200th-level scan driving unit 21, ..., the 20th first node S4 on the fourth driving power line 35 is connected to the second power supply terminal P4 of the 200th-level scan driving unit 21, and then the first nodes S3 of the third driving power line 34 and the first nodes S4 of the fourth driving power line 35 are connected through the second connecting line 36, so that 20 second connecting lines 36 can be set in the display panel.

[0070] In an exemplary embodiment, the third driving power line 34 is respectively connected to the second power terminal of each light-emitting driving unit 11, and the fourth driving power line 35 is respectively connected to the second power terminal of each scanning driving unit 21, wherein the first end of the second connecting line 36 is connected to the first node S3 of the third driving power line 34, the second end of the second connecting line 36 is connected to the first node S4 of the fourth driving power line 35, the first node S3 of the third driving power line 34 is connected to the second power terminal P2 of the i-th level light-emitting driving unit 11; the first node S4 of the fourth driving power line 35 is connected to the second power terminal P4 of the 2i-th level scanning driving unit 21; wherein, 1≤i≤n, wherein n is the number of levels of the light-emitting driving unit, and 2n is the number of levels of the scanning driving unit.

[0071] In this example, see Figure 10 Each light-emitting driving unit 11 provides a light-emitting control signal to an adjacent row of pixel circuits 40, and each scan driving unit 21 provides a scan signal to a row of pixel circuits 40. When the display panel includes 2n rows of pixel circuits 40, the display panel includes n levels of light-emitting driving units 11 and 2n levels of scan driving units 21. Each first node S3 of the third driving power line 34 is connected to the second power supply terminal P2 of the corresponding light-emitting driving unit 11 to provide the second electrical signal VGL to each light-emitting driving unit 11. At the same time, each fourth driving power line 35 is connected to the second power supply terminal P4 of the corresponding scan driving unit 21 to provide the second electrical signal VGL to each scan driving unit 21. In the present application, by setting the first end of the second connecting line 36 to be connected to the first node S3 of the third driving power line 34, and the second end of the second connecting line 36 to be connected to the first node S4 of the fourth driving power line 35, each first node S4 can correspondingly pull down the potential of each first node S3, thereby reducing or eliminating the potential difference of each first node S3 on the third driving power line 34, thereby ensuring that the difference in the size of the second voltage signal received by each light-emitting driving unit 11 is small or non-existent, and is close to the theoretical value of the second voltage signal, thereby improving the uniformity of the display panel.

[0072] In an application, k second connecting lines 36 can be provided in the display panel. The number k of second connecting lines 36 can be less than or equal to the number 2n of the scan drive units 21, i.e., m≤2n. The first end of each second connecting line 36 is connected to a different node of the third drive power line 34, and the second end of each second connecting line 36 is connected to a different node of the fourth drive power line 35. For example, the display panel includes 2000 rows of pixel units, i.e., the display panel includes 1000 levels of light-emitting drive units 11 and 2000 levels of scan drive units 21. 1000 first nodes S3 can be provided on the third drive power line 34, and 1000 first nodes S4 can be provided on the fourth drive power line 35. Each first node S3 on the third drive power line 34 is connected to the second power supply terminal of each level of the light-emitting drive unit 11, and each first node S4 on the fourth drive power line 35 is connected to the second power supply terminal of some of the scan drive units 21. For example, the first first node S4 of the fourth driving power line 35 is connected to the second power supply terminal of the first-stage scan driving unit 21, the second first node S4 of the fourth driving power line 35 is connected to the second power supply terminal of the third-stage scan driving unit 21, ..., the 1000th first node S4 of the fourth driving power line 35 is connected to the second power supply terminal of the 1999th-stage scan driving unit 21, and then the first nodes S3 of the third driving power line 34 are correspondingly connected to the first nodes S4 of the fourth driving power line 35 via the second connecting wires 36. In this way, 1000 second connecting wires 36 can be provided in the display panel. The second connecting wires 36 can be provided in parallel.

[0073] In an exemplary embodiment, please refer to Figure 9The first connecting trace 33 and the second connecting trace 36 can be set in a one-to-one correspondence, and the corresponding two ends of the first connecting trace 33 and the two ends of the second connecting trace 36 are respectively connected to the first power supply terminal P1 of the light-emitting driving unit 11, the first power supply terminal P3 of the scanning driving unit 21, the second power supply terminal P2 of the light-emitting driving unit 11, and the second power supply terminal P4 of the scanning driving unit 21 of the same level. Exemplarily, two ends of a first connecting wire 33 are respectively connected to the first power supply terminal P1 of the first-stage light-emitting driving unit 11 and the first power supply terminal P3 of the first-stage scan driving unit 21, and two ends of a second connecting wire 36 are respectively connected to the second power supply terminal P2 of the first-stage light-emitting driving unit 11 and the second power supply terminal P4 of the first-stage scan driving unit 21; two ends of a first connecting wire 33 are respectively connected to the first power supply terminal P1 of the second-stage light-emitting driving unit 11 and the first power supply terminal P3 of the second-stage scan driving unit 21, and two ends of a second connecting wire 36 are respectively connected to the second power supply terminal P2 of the second-stage light-emitting driving unit 11 and the second power supply terminal P4 of the second-stage scan driving unit 21; ...; two ends of a first connecting wire 33 are respectively connected to the first power supply terminal P1 of the n-stage light-emitting driving unit 11 and the first power supply terminal P3 of the n-stage scan driving unit 21, and two ends of a second connecting wire 36 are respectively connected to the second power supply terminal P2 of the n-stage light-emitting driving unit 11 and the second power supply terminal P4 of the n-stage scan driving unit 21.

[0074] In the application, please continue to see Figure 10, the first connection line 33 and the second connection line 36 may also not be set in a one-to-one correspondence. For example, each light-emitting driving unit 11 provides a light-emitting control signal to the adjacent row pixel circuit 40, and each scan driving unit 21 provides a scan signal to a row of pixel circuits 40. The display panel includes 2000 rows of pixel units, that is, the display panel includes 1000-level light-emitting driving units 11 and 2000-level scan driving units 21. The two ends of a first connection line 33 can be respectively connected to the first power supply terminal P1 of the first-level light-emitting driving unit 11 and the first power supply terminal P3 of the second-level scan driving unit 21, and the two ends of a second connection line 36 can be respectively connected to the second power supply terminal P2 of the first-level light-emitting driving unit 11 and the second power supply terminal P4 of the first-level scan driving unit 21; a first connection line 33 is connected to the first power supply terminal P1 of the first-level light-emitting driving unit 11 and the second power supply terminal P3 of the second-level scan driving unit 21. The two ends of the line 33 are respectively connected to the first power supply terminal P1 of the second-stage light-emitting driver unit 11 and the first power supply terminal P3 of the fourth-stage scan driver unit 21. The two ends of a second connecting line 36 are respectively connected to the second power supply terminal P2 of the second-stage light-emitting driver unit 11 and the second power supply terminal P4 of the third-stage scan driver unit 21. ...; the two ends of a first connecting line 33 are respectively connected to the first power supply terminal P1 of the 1000th-stage light-emitting driver unit 11 and the first power supply terminal P3 of the 2000th-stage scan driver unit 21. The two ends of a second connecting line 36 are respectively connected to the second power supply terminal P2 of the 1000th-stage light-emitting driver unit 11 and the second power supply terminal P4 of the 1999th-stage scan driver unit 21. The first connecting line 33 and the second connecting line 36 can be arranged on the same layer.

[0075] In an exemplary embodiment, see Figure 11 The display panel includes a substrate 51, an array layer 52, and a first metal layer 53. The array layer 52 is disposed on one side of the substrate 51 and includes a light-emitting drive circuit 10 and a scan drive circuit 20. The first metal layer 53 includes a first drive power line 31, a second drive power line 32, and a first connection line 33. The first metal layer 53 may also include a third drive power line 34, a fourth drive power line 35, and a second connection line 36.

[0076] In the application, the first driving power line 31, the second driving power line 32, the third driving power line 34 and the fourth driving power line 35 are all arranged in the metal structure M3 in the first metal layer 53. The first connecting line 33 and the second connecting line 36 can be directly set in the first metal layer 53 to connect the first driving power line 31 and the second driving power line 32, and to connect the third driving power line 34 and the fourth driving power line 35.

[0077] In an exemplary embodiment, see Figure 12 The display panel includes: a substrate 51 , an array layer 52 , a first metal layer 53 and a connection wiring layer 54 .

[0078] The array layer 52 is disposed on one side of the substrate 51 and includes the light-emitting drive circuit 10 and the scan drive circuit 20. The first metal layer 53 includes a first drive power line 31, a second drive power line 32, a third drive power line 34, and a fourth drive power line 35. The connection wiring layer 54 is disposed on a separate layer from the first metal layer 53 and includes at least one first connection wiring 33 and at least one second connection wiring 36.

[0079] In addition to directly connecting the first driving power line 31 and the second driving power line 32 in the first metal layer 53, and directly connecting the third driving power line 34 and the fourth driving power line 352 in the first metal layer 53, a connecting wiring layer 54 can be added to the display panel. The connecting wiring layer 54 can be located between the substrate 51 and the array layer 52. The first driving power line 31 and the second driving power line 32 in the first metal layer 53 can be respectively connected to the first connecting wiring 33 in the connecting wiring layer 54 through vias. Similarly, the third driving power line 34 and the fourth driving power line 35 in the first metal layer 53 can be respectively connected to the second connecting wiring 36 in the connecting wiring layer 54 through vias.

[0080] In particular, the orthographic projection of at least one first connecting trace 33 on the substrate 51 can be arranged to overlap with the orthographic projection of the channel of at least one transistor in the array layer 52 on the substrate 51, and / or the orthographic projection of at least one second connecting trace 36 on the substrate 51 can be arranged to overlap with the orthographic projection of the channel of at least one transistor in the array layer 52 on the substrate 51, so as to prevent the transistors in the array layer 52 from experiencing characteristic changes due to the influence of light, charged particles, etc.

[0081] In an exemplary embodiment, see Figure 13 The connection wiring layer 54 further includes a light shielding structure, and the orthographic projection of the light shielding structure on the substrate overlaps with the orthographic projection of the channel of at least one transistor in the array layer 51 on the substrate 51 .

[0082] It is understood that a light-shielding layer (BSM) is typically provided in a display panel. The light-shielding layer (BSM) is located between the substrate 51 and the array layer 52. The light-shielding layer (BSM) includes a light-shielding structure that can block bottom-reflected light, thereby protecting the transistors in the array layer 52 and preventing the transistors in the array layer 52 from experiencing characteristic changes due to exposure to light, charged particles, and the like. In applications, the light-shielding layer (BSM) can be directly reused as the connection wiring layer 54. In one example, the light-shielding structure can be directly reused as the first connection wiring 33 and / or the second connection wiring 36. In another example, the first connection wiring 33 and the second connection wiring 36 can be additionally provided in the light-shielding layer (BSM), i.e., the connection wiring layer 54, without reusing the light-shielding structure as the first connection wiring 33 and the second connection wiring 36.

[0083] Based on the same application concept, an embodiment of the present application also provides a display device. Figure 14 This is a schematic diagram of the structure of the display device 200 provided in an embodiment of the present application, as shown in FIG. Figure 14 As shown, the display device 200 includes the display panel 100 in any of the above embodiments. Figure 14 As shown, the display device 200 includes a display panel 100. Therefore, the display device 200 also has the beneficial effects of the display panel 100 in the above embodiment. The similarities can be understood by referring to the above explanation of the display panel 100, which will not be repeated below.

[0084] The display device 200 provided in the embodiment of the present application can be Figure 14 The mobile phone shown can also be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop monitors, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, industrial control equipment, medical display screens, touch interactive terminals, etc. The embodiments of this application do not specifically limit this.

[0085] Throughout this specification, references to terms such as "some embodiments," "other embodiments," and "desired embodiments" indicate that a particular feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Although these terms are used interchangeably throughout this specification, they do not necessarily refer to the same embodiment or example.

[0086] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0087] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A display panel, characterized in that: include: A light-emitting driving circuit, comprising a plurality of cascaded light-emitting driving units, wherein the output end of each light-emitting driving unit is used to output a light-emitting control signal; A scan driving circuit comprising a plurality of cascaded scan driving units, wherein the output terminals of the scan driving units are used to output scan signals; a first driving power line, connected to each of the light-emitting driving units, for transmitting a first voltage signal to each of the light-emitting driving units; a second driving power line, connected to each of the scan driving units, for transmitting the first voltage signal to each of the scan driving units; At least one first connecting line, wherein both ends of the first connecting line are respectively connected to the first driving power line and the second driving power line; wherein the first connecting line is located in the non-display area where the light-emitting driving circuit and the scanning driving circuit are located.

2. The display panel according to claim 1, wherein: The first driving power lines are respectively connected to the first power terminals of the light-emitting driving units, and the second driving power lines are respectively connected to the first power terminals of the scanning driving units, wherein: The first end of the first connecting line is connected to the first node of the first driving power line, the second end of the first connecting line is connected to the first node of the second driving power line, the first node of the first driving power line is connected to the first power terminal of the i-th level light-emitting driving unit; the first node of the second driving power line is connected to the first power terminal of the i-th level scanning driving unit; wherein, 1≤i≤n, wherein n is the number of levels of the scanning driving unit or the light-emitting driving unit.

3. The display panel according to claim 2, wherein: The display panel includes m first connecting wires, wherein m≤n, and the first connecting wires are arranged in parallel.

4. The display panel according to claim 2, wherein: The display panel includes m first connecting lines, where m≤n, n is the number of stages of the scanning drive unit or the light-emitting drive unit, and the first connecting lines are arranged in parallel, the first ends of the first connecting lines are different from the connection nodes of the first drive power lines, and the second ends of the first connecting lines are different from the connection nodes of the second drive power lines.

5. The display panel according to any one of claims 1 to 4, characterized in that: The display panel further includes: a third driving power line, connected to each of the light-emitting driving units, for transmitting a second voltage signal to each of the light-emitting driving units; a fourth driving power line, connected to each of the scan driving units, for transmitting the second voltage signal to each of the scan driving units, wherein one of the first voltage signal and the second voltage signal is a high level signal, and the other is a low level signal; At least one second connecting line, both ends of which are connected to the third driving power line and the fourth driving power line respectively; wherein the second connecting line is located in the non-display area where the light-emitting driving circuit and the scan driving circuit are located.

6. The display panel according to claim 5, wherein: The third driving power line is connected to the second power supply terminal of each light-emitting driving unit, and the fourth driving power line is connected to the second power supply terminal of each scanning driving unit, wherein: The first end of the second connecting line is connected to the first node of the third driving power line, the second end of the second connecting line is connected to the first node of the fourth driving power line, the first node of the third driving power line is connected to the second power terminal of the i-th level light-emitting driving unit; the first node of the fourth driving power line is connected to the second power terminal of the i-th level scanning driving unit; wherein 1≤i≤n, wherein n is the number of levels of the scanning driving unit or the light-emitting driving unit.

7. The display panel according to claim 6, wherein: The display panel includes k second connecting wires, wherein k≤n, and the second connecting wires are arranged in parallel.

8. The display panel according to claim 6, wherein: The display panel includes k second connecting lines, where k≤n, n is the number of stages of the scanning drive unit or the light-emitting drive unit, and the second connecting lines are arranged in parallel, the first ends of the second connecting lines are different from the connection nodes of the third drive power line, and the second ends of the second connecting lines are different from the connection nodes of the fourth drive power line.

9. The display panel according to claim 6, wherein: The first connecting wire and the second connecting wire are arranged in a one-to-one correspondence, and the two ends of the corresponding first connecting wire and the two ends of the second connecting wire are respectively connected to the first power supply end of the light-emitting driving unit, the first power supply end of the scanning driving unit, the second power supply end of the light-emitting driving unit, and the second power supply end of the scanning driving unit of the same level.

10. The display panel according to claim 5, wherein: The first connecting wiring and the second connecting wiring are arranged on the same layer.

11. The display panel according to any one of claims 1 to 4, characterized in that: The display panel includes: substrate; an array layer, disposed on one side of the substrate, the array layer comprising the light-emitting drive circuit and the scan drive circuit; A first metal layer includes the first driving power line, the second driving power line, and the first connecting line.

12. The display panel according to any one of claims 1 to 4, characterized in that: The display panel includes: substrate; an array layer, disposed on one side of the substrate, the array layer comprising the light-emitting drive circuit and the scan drive circuit; a first metal layer, the first metal layer including the first driving power line and the second driving power line; The connection wiring layer is provided in a different layer from the first metal layer, and the connection wiring layer includes at least one first connection wiring.

13. The display panel according to claim 12, wherein: The connection wiring layer is located between the substrate and the array layer; The orthographic projection of at least one of the first connecting traces on the substrate overlaps with the orthographic projection of a channel of at least one transistor in the array layer on the substrate.

14. The display panel according to claim 12, wherein: The connection wiring layer further includes a light-shielding structure, and an orthographic projection of the light-shielding structure on the substrate overlaps with an orthographic projection of a channel of at least one transistor in the array layer on the substrate.

15. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 14.

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