CN118918817A - Display panel and display device - Google Patents

Abstract

The application relates to a display panel and a display device, which comprises a light-emitting driving circuit, a scanning driving circuit, a first driving power line, a second driving power line and at least one first connecting wire, wherein the light-emitting driving circuit is provided with a plurality of light-emitting driving units, the output ends of the light-emitting driving units are used for outputting light-emitting control signals, the first driving power line is respectively connected with each light-emitting driving unit and is used for transmitting first voltage signals to each light-emitting driving unit, the scanning driving circuit is provided with a plurality of cascaded scanning driving units, the output ends of the scanning driving units are used for outputting scanning signals, the second driving power line is respectively connected with each scanning driving unit and is used for transmitting first voltage signals to each scanning driving unit, the two ends of the first connecting wire are respectively connected with the first driving power line and the second driving power line, and the first connecting wire is positioned in a non-display area where the light-emitting driving circuit and the scanning driving circuit are positioned.

Description

Display panel, display device

Technical Field

The present application relates to the field of display technology, and in particular to a display panel and a display device.

Background Art

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

However, the gate driving circuit in PWM mode is prone to poor screen uniformity of display products.

Summary of the invention

Based on this, it is necessary to provide a display panel and a display device with better picture uniformity in order to solve the above technical problems.

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

A light-emitting driving circuit, comprising a plurality of cascaded light-emitting driving units, wherein the output end of the 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 end of the scan driving unit is used to output a scan signal;

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 wire, two ends of which are respectively connected to the first driving power line and the second driving power line; wherein the first connecting wire is located in a non-display area where the light-emitting driving circuit and the scanning driving circuit are located.

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

The above-mentioned display panel and display device include a light-emitting driving circuit, a scanning 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 a plurality of 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 scanning driving circuit has a plurality of cascaded scanning driving units, and the output end of the scanning driving unit is used to output a scanning signal. The second driving power line is respectively connected to each scanning driving unit and is used to transmit a first voltage signal to each scanning 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 a non-display area where the light-emitting driving circuit and the scanning driving circuit are located. In the present 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 be 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, thereby improving the picture uniformity of the display product.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. 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.

FIG1 is a schematic diagram of a display panel in one embodiment;

FIG2 is a schematic diagram of a display panel in another embodiment;

FIG3 is a circuit structure diagram of a light-emitting driving unit in one embodiment;

FIG4 is a circuit structure diagram of a scan driving unit in one embodiment;

FIG5 is a schematic diagram of a display panel in yet another embodiment;

FIG6 is a schematic diagram of a display panel in yet another embodiment;

FIG7 is a schematic diagram of a display panel in yet another embodiment;

FIG8 is a schematic diagram of a display panel in yet another embodiment;

FIG9 is a schematic diagram of a display panel in yet another embodiment;

FIG10 is a schematic diagram of a display panel in yet another embodiment;

FIG11 is a cross-sectional schematic diagram of a display panel in one embodiment;

FIG12 is a cross-sectional schematic diagram of a display panel in another embodiment;

FIG13 is a cross-sectional schematic diagram of a display panel in yet another embodiment;

FIG. 14 is a schematic diagram of a display device in one embodiment.

Description of reference numerals: 100-display panel, 10-light-emitting driving circuit, 11-light-emitting driving unit, 20-scanning driving circuit, 21-scanning 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

In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

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

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 there may be intervening elements. Further, when a layer is referred to as being "under" another layer, it can be directly under or there may be one or more intervening elements. It is also understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or there may be one or more intervening elements.

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 being one in number.

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 element. 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 the present application.

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, which are not limited here.

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

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.

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 changed 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 driving circuit is usually controlled by a multi-pulse mode. However, when the light-emitting driving circuit is controlled by a 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 driving circuit adopts a multi-pulse mode, the light-emitting driving circuit will drive multiple rows of pixel circuits at the same time, resulting in a large load on the light-emitting driving circuit, resulting in a large voltage drop on the first driving power line that provides the first voltage signal to the light-emitting driving circuit, which in turn results in a large difference in the potential of the light-emitting driving signal output by each light-emitting driving unit in the light-emitting driving circuit, resulting in a difference in the driving current in each pixel circuit, affecting the brightness uniformity of the display panel.

Based on the above technical problems, the inventors have found that the control mode of the scanning driving circuit that provides scanning signals for each pixel circuit is a low pulse mode, that is, the scanning driving circuit only drives one row of pixel circuits at the same time, the load borne by the scanning driving circuit is relatively small, and the voltage drop on the second driving power line that provides the first voltage signal for the scanning driving 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, so as to alleviate the voltage drop on the first driving power line, thereby alleviating the difference in the light-emitting driving signals output by each light-emitting driving unit in the light-emitting driving circuit, and improving the brightness uniformity of the display panel.

The above is the core idea of this application. The technical solutions in the embodiments of this application will be described clearly and completely below in conjunction with the drawings in the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

In an exemplary embodiment, referring to Figures 1 and 2, the present application provides a display panel 100, the display panel 100 has a display area AA and a non-display area FA at least partially surrounding the display area AA, and 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.

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

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.

In one example, please refer to FIG1 , 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, please refer to FIG2 , each light-emitting driving unit 11 provides a light-emitting control signal for two adjacent rows of pixel circuits 40, and each scanning driving unit 21 provides a scanning signal for a row of pixel circuits 40.

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 one pulse, that is, N=1, the light-emitting driving circuit 10 is in a low pulse mode, and each light-emitting driving unit 11 provides a light-emitting control signal for a row of pixel circuits 40 respectively, and 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 respectively, the light-emitting driving circuit 10 only needs to drive two rows of pixel circuits 40 at the same time.

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 a high 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 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, the light-emitting driving circuit 10 needs to drive 2N rows of pixel circuits 40 in the same time frame.

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 small, and 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 large, resulting in a larger 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 driving power line 31 with a first voltage signal for 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 first driving power line 31 provides a large difference in the magnitude of the first voltage signal provided by the first driving power line 31 to each light-emitting driving unit 11, and thus the difference in the potential magnitude of the light-emitting control signal output by each light-emitting driving unit 11 is large, resulting in a large difference in the driving current in each pixel circuit, and poor brightness uniformity of the display panel.

Taking the scanning drive unit driving one by one as an example, each scanning drive unit 21 provides a scanning signal for a row of pixel circuits 40 respectively. In a data refresh frame, the scanning drive circuit 20 includes only one pulse, that is, the scanning drive circuit 20 only needs to drive a row of pixel circuits 40 at the same time, so the load of the scanning drive circuit 20 is small, and thus the voltage drop on the second driving power line 32 that provides the first voltage signal for the scanning drive circuit 20 is small, and the magnitude of the first voltage signal provided by the second driving power line 32 to each scanning drive unit 21 is almost close to the set value of the first voltage signal, and there is almost no difference in the magnitude of the first voltage signal received by each scanning drive unit 21. Therefore, a first connecting line 33 is set in the present application, and the first driving power line 31 is connected to the second driving power line 32 through the first connecting line 33, so that the first voltage signal on the second driving power line 32 pulls the first voltage signal on the first driving power line 31 to be close to the set value of the first voltage signal, and thus the difference in the potential magnitude 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.

The above-mentioned display panel includes a light-emitting driving circuit, a scanning 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 a plurality of 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 scanning driving circuit has a plurality of cascaded scanning driving units, and the output end of the scanning driving unit is used to output a scanning signal. The second driving power line is respectively connected to each scanning driving unit and is used to transmit a first voltage signal to each scanning driving unit. Both 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 a non-display area where the light-emitting driving circuit and the scanning driving circuit are located. In the present 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 be 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, thereby improving the picture uniformity of the display product.

In one example, please refer to FIG. 3 and FIG. 4 , FIG. 3 is a circuit structure diagram of a light-emitting driving unit. As can be seen from FIG. 3 , the light-emitting driving unit 11 includes transistors M1 to M11, capacitors C1 to 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 an example 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 all 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.

FIG4 is a circuit structure diagram of a scan driving unit 21. It can be seen from FIG4 that 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. For example, 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 all 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.

In the 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 in the light-emitting driving unit 11 is connected to the first driving power supply line 31, and the first power supply terminal P3 in the scanning driving unit 21 is connected to the second driving power supply line 32. When the first voltage signal is the second electrical signal VGL, the second power supply terminal P2 in the light-emitting driving unit 11 is connected to the first driving power supply line 31, and the second power supply terminal P4 in the scanning driving unit 21 is connected to the second driving power supply line 32.

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, the second end of the first connecting line 33 is connected to the first node of the second driving power line 32, 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.

5 , 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. 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. In the following, the first voltage signal is taken as the first electrical signal VGH as an example for explanation. Each first node S1 of the first driving power line 31 is 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 end 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 for the light-emitting driving unit 11. At the same time, each first node S2 of the second driving power line 32 is 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 end 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 for the scan driving unit 21.

When the light-emitting driving circuit 10 is in the high pulse mode, a large voltage drop will be 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 in size. By way of example, the theoretical value of the first voltage signal is 5V. Since a large voltage drop will be generated on the first driving power line 31, the first voltage signal received by the first-level light-emitting driving unit 11 may be 5V, the first voltage signal received by the second-level light-emitting driving unit 11 may be 4.95V, the first voltage signal received by the third-level light-emitting driving unit 11 may be 4.9V, ..., the first voltage signal received by the i-th level light-emitting driving unit 11 may be 4.7V, ..., and the first voltage signal received by the n-th level 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. By way of 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 wire 33 to be connected to the first node S1 of the first drive power line 31, and the second end of the first connecting wire 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, and the potential difference of each first node S1 on the first drive power line 31 can be reduced or eliminated, thereby ensuring that the difference in the size 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.

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 n of the scanning 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 respectively different from the connection node of the first driving power line 31, and the second end of each first connection line 33 is respectively different from the connection node of the second driving power line 32. 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 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 terminal 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 terminal 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, and 2000 first connecting lines 33 can be set in the display panel.

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 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 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 terminal P1 of the 2000th-level light-emitting driving unit 11, and similarly, the 20th first node S1 on the second driving power line 32 is connected to the first power 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 scanning 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 scanning 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 scanning 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 wiring 33, and 20 first connecting wirings 33 can be set in the display panel.

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 the light-emitting driving unit, and 2n is the number of the scanning driving unit.

In this embodiment, please refer to FIG. 6 , each light-emitting driving unit 11 provides a light-emitting control signal for the adjacent row pixel circuit 40, and each scanning driving unit 21 provides a scanning signal for a row pixel circuit 40. In the case where the display panel includes 2n rows of pixel circuits 40, the display panel includes n-level light-emitting driving units 11 and 2n-level 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 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, and at the same time, each second driving power 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 wire 33 to be connected to the first node S1 of the first driving power line 31, and the second end of the first connecting wire 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, reduce or eliminate the potential difference of each first node S1 on the first driving power line 31, and then ensure 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.

In an application, m first connection lines 33 may be provided in the display panel, and 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 unit 21, that is, m≤2n, and the first ends of the first connection lines 33 are respectively different from the connection nodes of the first drive power line 31, and the second ends of the first connection lines 33 are respectively different from the connection nodes of the second drive power line 32. By way of 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, and 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, and 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 of 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 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 scanning 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 scanning 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 scanning 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 wiring 33, and 1000 first connecting wirings 33 can be set in the display panel.

In an exemplary embodiment, referring to FIG. 7 and FIG. 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 .

The third driving power line 34 is connected to each light-emitting driving unit 11, and is used to transmit the second voltage signal to each light-emitting driving unit 11. The fourth driving power line 35 is connected to each scanning driving unit 21, and is used to transmit the second voltage signal to each scanning driving unit 21. The two ends of the second connecting wire 36 are respectively connected to the third driving power line 34 and the fourth driving power line 35. The second connecting wire 36 is located in the non-display area where the light-emitting driving circuit 10 and the scanning driving circuit 20 are located, and one of the first voltage signal and the second voltage signal is a high level signal, and the other is a low level signal.

Fig. 7 is a circuit structure diagram of a display panel when 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, and Fig. 8 is a circuit structure diagram of a display panel when each light-emitting driving unit 11 provides a light-emitting control signal for two adjacent rows of pixel circuits 40, and each scanning driving unit 21 provides a scanning signal for a row of pixel circuits 40. When 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, 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, the light-emitting driving circuit 10 needs to drive 2N rows of pixel circuits 40 at the same time.

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

Therefore, a second connecting line 36 is set 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, and then the difference in the potential size of the light-emitting control signal output by each light-emitting driving 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.

In an exemplary embodiment, please refer to Figure 9, the third driving power line 34 is respectively connected to the second power terminal P2 of each light-emitting driving unit 44, and the fourth driving power line 35 is respectively connected to the second power 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, 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 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 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.

In the present embodiment, the first voltage signal is the first electrical signal VGH, 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. Please refer to FIG3, FIG4 and FIG9, 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 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, and 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.

When the light-emitting driving circuit 10 is in the high pulse mode, a large voltage drop will be 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 results in a large difference in the magnitude of the second voltage signal received by each light-emitting driving unit 11. Exemplarily, the theoretical value of the second voltage signal is -5V. Since a large voltage drop will be generated on the first driving power line 31, the second voltage signal received by the first-level light-emitting driving unit 11 may be -5V, the second voltage signal received by the second-level light-emitting driving unit 11 may be -4.95V, the second voltage signal received by the third-level light-emitting driving unit 11 may be -4.9V, ..., the second voltage signal received by the i-th level light-emitting driving unit 11 may be -4.7V, ..., and the second voltage signal received by the n-th level 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 S4 on the fourth drive power line 35 is small. Without considering the voltage drop caused by the resistance of the fourth drive power line 35 itself, there is no difference in the potential at each first node S4 on the fourth drive power line 35. By way of example, the potential at each first node S4 on the fourth drive power line 35 is -5V. By setting the first end of the second connecting wire 36 to be connected to the first node S3 of the third drive power line 34, and the second end of the second connecting wire 36 to be connected to the first node S4 of the fourth drive power line 35, the potential of each first node S4 can be correspondingly lowered, and the potential difference of each first node S3 on the third drive power line 34 can be reduced or eliminated, thereby ensuring that the difference in the size of the second voltage signal received by each light-emitting drive 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.

In the application, k second connecting wires 36 can be set in the display panel, and the number k of the second connecting wires 36 can be less than or equal to the number n of the scanning driving unit 21 or the light-emitting driving unit 11, that is, m≤n, and the first end of each second connecting wire 36 is different from the connection node of the third driving power line 34, and the second end of each second connecting wire 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. The first nodes S3 on the third driving power line 34 are respectively connected to the second power supply terminals P2 of the light-emitting driving units 11 at each level, and the first nodes S4 on the fourth driving power line 35 are respectively connected to the second power supply terminals P4 of the scanning driving units 21 at each level. Then, the first nodes S3 on the third driving power line 34 and the first nodes S4 on the fourth driving power line 35 are correspondingly connected through multiple second connecting wires 36, and 2000 second connecting wires 36 can be set in the display panel.

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 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 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 terminal P2 of the 2000th-level light-emitting driving unit 11, and similarly, the 20th first node S3 on the third driving power line 34 is connected to the second power terminal P2 of the 2000th-level light-emitting driving unit 11. 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 wiring 36, and 20 second connecting wirings 36 can be set in the display panel.

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 the light-emitting driving unit, and 2n is the number of the scanning driving unit.

In this embodiment, please refer to FIG. 10 , each light-emitting driving unit 11 provides a light-emitting control signal for the adjacent row pixel circuit 40, each scanning driving unit 21 provides a scanning signal for a row pixel circuit 40, and when the display panel includes 2n rows of pixel circuits 40, the display panel includes n-level light-emitting driving units 11 and 2n-level scanning 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, and at the same time, each first node S3 of the fourth driving power line 35 is connected to the second power supply terminal P4 of the corresponding scanning driving unit 21 to provide the second electrical signal VGL to each scanning driving unit 21. In the present application, by setting the first end of the second connecting wiring 36 to be connected to the first node S3 of the third driving power line 34, and the second end of the second connecting wiring 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, reduce or eliminate the potential difference of each first node S3 on the third driving power line 34, and then ensure 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.

In application, k second connection lines 36 may be set in the display panel, the number k of the second connection lines 36 may be less than or equal to the number 2n of the levels of the scan drive unit 21, that is, m≤2n, and the first end of each second connection line 36 is respectively different from the connection node of the third drive power line 34, and the second end of each second connection line 36 is respectively different from the connection node of the fourth drive power line 35. Exemplarily, 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 S3 may be set on the third drive power line 34, and 1000 first nodes S4 may be set on the fourth drive power line 35, and each first node S3 on the third drive power line 34 is respectively connected to the second power supply end of each level of the light-emitting drive unit 11, and each first node S4 of the fourth drive power line 35 is respectively connected to the second power supply end of part of the scan drive unit 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-level scanning 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-level scanning 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-level scanning 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 correspondingly connected through the second connecting wire 36, so that 1000 second connecting wires 36 can be set in the display panel. Among them, each second connecting wire 36 can be set in parallel.

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

In application, please continue to refer to FIG. 10 , the first connection wiring 33 and the second connection wiring 36 may also be arranged in a non-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 scanning driving unit 21 provides a scanning signal to a row of pixel circuits 40, and 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 scanning driving units 21. The two ends of a first connection wiring 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 scanning driving unit 21, and the two ends of a second connection wiring 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 scanning driving unit 21; a first connection wiring 33 The two ends of the line 33 are respectively connected to the first power supply terminal P1 of the second-level light-emitting driving unit 11 and the first power supply terminal P3 of the fourth-level scanning driving unit 21, and the two ends of a second connecting line 36 are respectively connected to the second power supply terminal P2 of the second-level light-emitting driving unit 11 and the second power supply terminal P4 of the third-level scanning driving unit 21; ...; the two ends of a first connecting line 33 are respectively connected to the first power supply terminal P1 of the 1000th-level light-emitting driving unit 11 and the first power supply terminal P3 of the 2000th-level scanning driving unit 21, and the two ends of a second connecting line 36 are respectively connected to the second power supply terminal P2 of the 1000th-level light-emitting driving unit 11 and the second power supply terminal P4 of the 1999th-level scanning driving unit 21. Among them, the first connecting line 33 and the second connecting line 36 can be set in the same layer.

In an exemplary embodiment, referring to FIG. 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 the array layer 52 includes a light-emitting driving circuit 10 and a scanning driving circuit 20. The first metal layer 53 includes a first driving power line 31, a second driving power line 32, and a first connecting wire 33. The first metal layer 53 may also include a third driving power line 34, a fourth driving power line 35, and a second connecting wire 36.

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 arranged 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.

In an exemplary embodiment, referring to FIG. 12 , the display panel includes: a substrate 51 , an array layer 52 , a first metal layer 53 and a connection wiring layer 54 .

The array layer 52 is disposed on one side of the substrate 51, and the array layer 52 includes a light-emitting driving circuit 10 and a scanning driving circuit 20. The first metal layer 53 includes a first driving power line 31, a second driving power line 32, a third driving power line 34, and a fourth driving power line 35. The connecting wiring layer 54 is disposed in a different layer from the first metal layer 53, and the connecting wiring layer 54 includes at least one first connecting wiring 33 and at least one second connecting wiring 36.

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 connected to the first connecting wiring 33 in the connecting wiring layer 54 through vias, respectively. Similarly, the third driving power line 34 and the fourth driving power line 35 in the first metal layer 53 can be connected to the second connecting wiring 36 in the connecting wiring layer 54 through vias, respectively.

Among them, 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.

In an exemplary embodiment, referring to FIG. 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 .

It can be understood that a light shielding layer BSM is usually provided in the display panel, and the light shielding layer BSM is located between the substrate 51 and the array layer 52. The light shielding layer BSM has a light shielding structure that can block the bottom reflection, so as to protect the transistors in the array layer 52 and prevent the transistors in the array layer 52 from changing their characteristics due to the influence of light, charged particles, etc. In application, 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, that is, the connection wiring layer 54, that is, the light shielding structure is not reused as the first connection wiring 33 and the second connection wiring 36.

Based on the same application concept, the embodiment of the present application also provides a display device. FIG14 is a schematic diagram of the structure of a display device 200 provided in an embodiment of the present application. As shown in FIG14 , the display device 200 includes a display panel 100 in any of the above embodiments. Exemplarily, as shown in FIG14 , 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 embodiments. The similarities can be understood by referring to the above explanation of the display panel 100, which will not be repeated below.

The display device 200 provided in the embodiment of the present application can be the mobile phone shown in Figure 14, or it can be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, industrial control equipment, medical display screens, touch interactive terminals, etc. The embodiment of the present application does not make any special limitations on this.

In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", "ideal embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

The technical features of the above embodiments may 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.

The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims (15)

1. A display panel, comprising:

The light-emitting driving circuit comprises a plurality of cascaded light-emitting driving units, and the output end of each light-emitting driving unit is used for outputting a light-emitting control signal;

the scanning driving circuit comprises a plurality of cascaded scanning driving units, and the output end of each scanning driving unit is used for outputting scanning signals;

The first driving power line is respectively connected with each light-emitting driving unit and used for transmitting a first voltage signal to each light-emitting driving unit;

the second driving power line is respectively connected with each scanning driving unit and is used for transmitting the first voltage signal to each scanning driving unit;

The two ends of the first connecting wiring are respectively connected with the first driving power line and the second driving power line; the first connecting wire is positioned in a non-display area where the light-emitting driving circuit and the scanning driving circuit are positioned.

2. The display panel according to claim 1, wherein the first driving power line is connected to a first power terminal of each of the light emitting driving units, respectively, and the second driving power line is connected to a first power terminal of each of the scan driving units, respectively, wherein,

The first end of the first connecting wire is connected with a first node of the first driving power line, the second end of the first connecting wire is connected with a first node of the second driving power line, and the first node of the first driving power line is connected with a first power end of the ith stage of the light-emitting driving unit; the first node of the second driving power line is connected to the first power end of the scanning driving unit of the ith stage; wherein i is more than or equal to 1 and less than or equal to n, and n is the number of stages of the scanning driving unit or the light-emitting driving unit.

3. The display panel according to claim 2, wherein the display panel comprises m first connection wirings, wherein m is less than or equal to n, and each first connection wiring is arranged in parallel.

4. The display panel according to claim 2, wherein the display panel includes m first connection wirings, where m is equal to or less than n, n is a number of stages of the scan driving unit or the light emitting driving unit, and each of the first connection wirings is disposed in parallel, a first end of each of the first connection wirings is different from a connection node of the first driving power line, and a second end of each of the first connection wirings is different from a connection node of the second driving power line.

5. The display panel of any one of claims 1-4, further comprising:

the third driving power line is respectively connected with each light-emitting driving unit and used for transmitting a second voltage signal to each light-emitting driving unit;

A fourth driving power line connected to each of the scan driving units, respectively, 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;

The two ends of the second connecting wiring are respectively connected with the third driving power line and the fourth driving power line; the second connecting wire is positioned in a non-display area where the light-emitting driving circuit and the scanning driving circuit are positioned.

6. The display panel according to claim 5, wherein the third driving power line is connected to the second power terminal of each of the light emitting driving units, respectively, and the fourth driving power line is connected to the second power terminal of each of the scan driving units, respectively, wherein,

The first end of the second connecting wire is connected with the first node of the third driving power line, the second end of the second connecting wire is connected with the first node of the fourth driving power line, and the first node of the third driving power line is connected with the second power end of the ith stage of the light-emitting driving unit; the first node of the fourth driving power line is connected to the second power end of the scanning driving unit of the ith stage; wherein i is more than or equal to 1 and less than or equal to n, and n is the number of stages of the scanning driving unit or the light-emitting driving unit.

7. The display panel of claim 6, wherein the display panel comprises k second connection traces, wherein k n is less than or equal to n, and each of the second connection traces is disposed in parallel.

8. The display panel according to claim 6, wherein the display panel includes k second connection wirings, where k is equal to or less than n, n is a number of stages of the scan driving unit or the light emitting driving unit, and each of the second connection wirings is disposed in parallel, a first end of each of the second connection wirings is different from a connection node of the third driving power line, and a second end of each of the second connection wirings is different from a connection node of the fourth driving power line.

9. The display panel according to claim 6, wherein the first connection trace and the second connection trace are disposed in one-to-one correspondence, and two ends of the corresponding first connection trace and two ends of the corresponding second connection trace are connected to a first power supply terminal of the light emitting driving unit, a first power supply terminal of the scan driving unit, a second power supply terminal of the light emitting driving unit, and a second power supply terminal of the scan driving unit, respectively, of the same stage.

10. The display panel of claim 5, wherein the first connection trace and the second connection trace are disposed in a same layer.

11. The display panel according to any one of claims 1 to 4, wherein the display panel comprises:

A substrate;

The array layer is arranged on one side of the substrate and comprises the light-emitting driving circuit and the scanning driving circuit;

The first metal layer comprises the first driving power line, the second driving power line and the first connecting wire.

12. The display panel according to any one of claims 1 to 4, wherein the display panel comprises:

A substrate;

The array layer is arranged on one side of the substrate and comprises the light-emitting driving circuit and the scanning driving circuit;

A first metal layer including the first driving power line and the second driving power line;

The connecting wiring layer is arranged different from the first metal layer, and comprises at least one first connecting wiring.

13. The display panel of claim 12, wherein the connection trace layer is located between the substrate and the array layer;

Wherein, the orthographic projection of at least one first connecting wire on the substrate overlaps with the orthographic projection of the channel of at least one transistor in the array layer on the substrate.

14. The display panel of claim 12, wherein the connection trace layer further comprises a light shielding structure, an orthographic projection of the light shielding structure on the substrate overlapping an orthographic projection of a channel of at least one transistor in the array layer on the substrate.

15. A display device comprising a display panel according to any one of claims 1-14.