Display panel and display device

Abstract

A display panel includes a first electrode layer, an organic light-emitting layer, and a second electrode layer stacked in sequence. The display panel is divided into a display area and a frame area. The frame area includes a first end edge region and a second end edge region that are opposite to each other. The display panel includes a first flexible circuit board arranged in the first end edge region, a second flexible circuit board arranged in the second end edge region, and two power lines. The first flexible circuit board and the second flexible board obtain drive signals supplied to the first electrode layer through their respective traces. One end of each power line is connected to a trace of the first flexible circuit board, and the other end is connected to a trace of the second flexible circuit board. The resistivity of the power line is higher than the resistivity of the traces of the first flexible circuit board and the traces of the second flexible circuit board. The present application also provides a display device including the display panel. By using traces provided on the second flexible circuit board to connect the power traces, a low-impedance power trace design is achieved, thereby reducing voltage drop.

Description

Technical Field

[0001] The present application relates to a display panel and a display device including the display panel. Background Art

[0002] An organic light-emitting diode (OLED) display is a display made of organic light-emitting diodes. When different driving voltages are applied to the cathode and anode at both ends of the light-emitting diode, the light-emitting diode emits light. Existing OLED display products usually set power lines inside the display panel to provide driving voltage for the light-emitting diode. However, the power lines are generally TiAlTi (titanium aluminum titanium) lines with a large resistivity, resulting in limited improvement in voltage drop (IR Drop). By increasing the width of the power lines, the voltage drop can be reduced to a certain extent, but it will affect the space of the display panel and the narrow frame design of the entire machine. Voltage drop refers to the voltage consumed by the power supply from the chip source to the component (such as the electrode layer). The voltage actually obtained by the component (such as the electrode layer) is the power supply voltage minus the voltage drop. Summary of the Invention

[0003] In a first aspect, an embodiment of the present application provides a display panel, including a first electrode layer, an organic light-emitting layer, and a second electrode layer stacked in sequence. The display panel is divided into a display area and a frame area. The frame area includes a first end edge region, a second end edge region, and two opposite side edge regions connected between the first end edge region and the second end edge region, including:

[0004] A first flexible circuit board is provided in the first end edge region, and a second flexible circuit board is provided in the second end edge region, wherein the first flexible circuit board and the second flexible board obtain a driving signal supplied to the first electrode layer from the main board through respective wirings;

[0005] Two power lines, each power line has two opposite ends, one end of each power line is connected to the trace of the first flexible circuit board, and the other end is connected to the trace of the second flexible circuit board, so that the two power lines, the trace of the first flexible circuit board, and the trace of the second flexible circuit board are connected to form a loop, and the two power lines are electrically connected to the first electrode layer.

[0006] In the embodiment of the present application, the resistivity of the power line is higher than the resistivity of the wiring of the first flexible circuit board and the resistivity of the wiring of the second flexible circuit board.

[0007] The display panel of the present application cleverly utilizes a first flexible circuit board and a flexible circuit board to connect the driving signal and sets a low-resistivity trace (such as a metal copper material) to connect and lead out the driving signal, and the trace is connected to a power trace with a higher resistivity (such as a TiAlTi three-layer stacked structure), thereby realizing a low-impedance power trace layout design, reducing voltage drop, and improving display effects.

[0008] In the embodiment of the present application, the first flexible circuit board is a display flexible circuit board, and the second flexible circuit board is a touch flexible circuit board.

[0009] The first flexible circuit board is a display flexible circuit board, which is used to transmit input signals related to the display image to each pixel, such as data signals, power signals (such as ELVSS power signals), control signals, etc. The second flexible circuit board is a touch flexible circuit board. The touch flexible circuit board is electrically connected to the touch layer and is used to transmit touch drive signals to the touch electrodes (such as T X ) and receives the touch electrodes of the touch layer (such as R X )’s induction signal.

[0010] In the embodiment of the present application, the two power lines are respectively arranged in the two different side areas.

[0011] By arranging the two power lines in different side areas, it can be ensured that both opposite sides of the first electrode layer can receive consistent driving signals.

[0012] In the embodiment of the present application, the driving signal is an ELVSS voltage signal.

[0013] In the embodiment of the present application, the first electrode layer is a layer that at least covers the entire display area.

[0014] The first electrode layer is a cathode, is a continuous whole layer covering at least the display area, and is transparent to avoid affecting light emission of the organic light emitting layer.

[0015] In the embodiment of the present application, the wiring in the first flexible circuit board and the second flexible circuit board are both made of metal copper.

[0016] The resistivity of metallic copper is low, which can better realize the low-impedance power supply line layout design.

[0017] In the implementation manner of the present application, the power supply wiring is a TiAlTi wiring.

[0018] The wiring adopts a TiAlTi three-layer stacked structure.

[0019] In an embodiment of the present application, the display panel is flexible and includes a main body and a first bending portion and a second bending portion connecting opposite ends of the main body. The first bending portion and the second bending portion are bent relative to the main body and stacked on the back of the main body.

[0020] Setting the display panel to be flexible and bendable can effectively reduce the front area of ​​the display device occupied by the two end edge regions.

[0021] In the embodiment of the present application, the first flexible circuit board is arranged on the first bending portion and located on the surface of the first bending portion away from the main body, and the second flexible circuit board is arranged on the second bending portion and located on the surface of the second bending portion away from the main body.

[0022] In an embodiment of the present application, the display panel includes a thin film transistor substrate stacked on a side of the second electrode layer facing away from the organic light-emitting layer. The thin film transistor substrate is flexible and includes a flexible base.

[0023] In an embodiment of the present application, the display panel also includes a plurality of other power lines extending in the display area, the plurality of other power lines are connected in parallel and electrically connected to the first electrode layer, and the plurality of other power lines are electrically connected to the lines of the first flexible circuit board or the lines of the second flexible circuit board.

[0024] When the display panel is used in a tablet computer or other electronic device with a larger display screen, the first electrode layer is also relatively large. To ensure that different areas of the first electrode layer receive consistent drive voltage signals and thus maintain pixel consistency, multiple power supply lines are also provided in the display area. However, these power supply lines must avoid the areas where pixels are located and must be provided in the areas between pixels.

[0025] A second aspect of the embodiments of the present application provides a display panel including the display panel described in the first aspect of the embodiments of the present application, and a polarizer and a transparent cover plate arranged on the display substrate.

[0026] In an embodiment of the present application, the display device further includes a touch layer stacked on the display panel.

[0027] In an embodiment of the present application, the display device further includes a display driver circuit board, which is electrically connected to the mainboard to obtain the drive signal, and the first flexible circuit board and the second flexible circuit board are both electrically connected to the display driver circuit board to obtain the drive signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a cross-sectional schematic diagram of an OLED display panel.

[0029] Figure 2 Schematic top view of the OLED display panel according to an embodiment of the present application.

[0030] Figure 3 3 is a top view schematic diagram of the ELVSS power supply wiring and the first electrode layer of the OLED display panel according to an embodiment of the present application.

[0031] Figure 4 1 is a side view of an OLED display device according to an embodiment of the present application.

[0032] Figure 5 2 is a schematic diagram of the back side of the OLED display device according to an embodiment of the present application.

[0033] Figure 6 2 is a cross-sectional schematic diagram of a thin film transistor substrate of an OLED display panel according to an embodiment of the present application.

[0034] Description of main component symbols

[0035] OLED display panel 100

[0036] First electrode layer 10

[0037] Organic light-emitting layer 20

[0038] The second electrode layer 30

[0039] Substrate 40

[0040] Display area 120

[0041] Border area 110

[0042] End area 111

[0043] Side area 113

[0044] First flexible printed circuit board 50

[0045] Second flexible printed circuit board 60

[0046] ELVSS power trace 70

[0047] Driver chip 80

[0048] Display driver circuit board 90

[0049] Connector 91

[0050] Routing 51, 61

[0051] Gate driver 115

[0052] Light emitting driver 116

[0053] Dummy circuit 117

[0054] Multiplexer 118

[0055] OLED display device 200

[0056] Main body 101

[0057] First bending portion 102

[0058] Second bending portion 103

[0059] Polarizer 210

[0060] Transparent cover 230

[0061] Transparent optical adhesive 250

[0062] Encapsulation layer 220 DETAILED DESCRIPTION

[0063] The following describes the embodiments of the present application in conjunction with the accompanying drawings. Unless otherwise specified, the data range values ​​recorded in this application should include the end values.

[0064] See also Figure 1 The OLED display panel 100 includes a transparent first electrode layer 10, an organic light-emitting layer 20, a second electrode layer 30, and a substrate 40 stacked in sequence. In this embodiment, the substrate 40 is a thin film transistor (TFT) substrate. The organic light-emitting layer 20 is disposed between the first electrode layer 10 and the second electrode layer 30. The first electrode layer 10 and the second electrode layer 30 serve as the cathode and anode of the organic light-emitting layer 20. When the first electrode layer 10 and the second electrode layer 30 receive different voltages respectively to form a sufficient voltage difference between the two, the organic light-emitting layer 20 emits light. In this embodiment, the first electrode layer 10 serves as a cathode and the second electrode layer 30 serves as an anode.

[0065] Figure 2 FIG is a schematic diagram of a top view of the OLED display panel 100. Figure 2As shown, the area of ​​the OLED display panel 100 is divided into a display area 120 (Active Area, AA) and a border area 110 connected to and surrounding the display area 120 according to different functions. In this embodiment, the first electrode layer 10 is a continuous entire layer that at least covers the display area 120, and is transparent to avoid affecting the light emission of the organic light-emitting layer 20. The material of the first electrode layer 10 can be a transparent conductive material, usually indium tin oxide, but not limited to this. The display area 120 is defined as a plurality of pixels arranged in a matrix (not shown in the figure), and the second electrode layer 30 includes a plurality of electrodes with insulating intervals, and each pixel corresponds to an electrode. The second electrode layer 30 is usually a metal material with good conductive properties.

[0066] The power supply used in OLED displays typically includes an ELVDD power supply that provides a high-level voltage and an ELVSS power supply that provides a low-level voltage. ELVDD and ELVSS are the driving voltages for the organic light-emitting layer 20 to emit light. In this embodiment, the voltage of the first electrode layer 10 can be provided by the ELVSS power supply, and the ELVSS power supply signal is transmitted to the first electrode layer 10 via the ELVSS power supply trace. The voltage of the second electrode layer 30 is provided by the ELVDD power supply circuit, which is controlled and transmitted to the corresponding electrodes of each sub-pixel through the TFT substrate 40.

[0067] OLED displays are current-driven devices, and the current consistency of each pixel affects the consistency of display brightness. In the prior art, to ensure brightness uniformity, ELVSS power traces are usually set on both sides of the display panel's border area to reduce voltage drop (IR drop) and improve the display effect. However, due to the limited space in the display panel, the impedance of the ELVSS power trace is difficult to further reduce, affecting the display effect. For tablets and mobile phones with larger display screens, the larger the screen, the more difficult it is to control the voltage drop, and the higher the risk of display effect.

[0068] Therefore, the present application provides an OLED display panel that reduces the impedance of the power supply lines and thus the voltage drop by designing the power supply lines. The present application uses the ELVSS power supply line layout design as an example, but the present application is not limited to this. For example, the ELVDD power supply line can also be laid out in a similar manner to the ELVSS power supply line layout.

[0069] like Figure 2 As shown, the border region 110 of the OLED display panel 100 includes two opposing end regions 111 and two opposing side regions 113 connected between the two end regions 111. For a vertical screen scenario, the two end regions 111 are located at the upper and lower ends of the display area 120; for a horizontal screen scenario, the two end regions 111 are located at the left and right ends of the display area 120.

[0070] See also Figure 2 The OLED display panel 100 includes a first flexible circuit board 50 and a second flexible circuit board 60. The first flexible circuit board 50 is located in one of the edge regions 111, and the second flexible circuit board 60 is located in the other edge region 111. The first flexible circuit board 50 and the second flexible circuit board 60 are located at opposite ends of the display area 120. The edge regions 111 are respectively designated as the first edge region and the second edge region, with the first flexible circuit board 50 located in the first edge region and the second flexible circuit board 60 located in the second edge region.

[0071] In this embodiment, the first flexible circuit board 50 is a display flexible circuit board used to transmit input signals related to the displayed image to each pixel, such as data signals, power signals (such as ELVSS power signals), and control signals. The first flexible circuit board 50 is provided with traces 51 for connecting and transmitting the ELVSS power signals.

[0072] In this embodiment, the second flexible circuit board 60 is a touch flexible circuit board. The touch flexible circuit board is electrically connected to the touch layer (not shown) to transmit touch driving signals to the touch electrodes (e.g., T X ) and receives the touch electrodes of the touch layer (such as R X The second flexible circuit board 60 is also provided with a trace 61 for connecting and transmitting the ELVSS power signal.

[0073] In other embodiments, the second flexible circuit board 60 may also be a flexible circuit board additionally provided for the layout design of power lines, rather than a touch-sensitive flexible circuit board.

[0074] See also Figure 3 The display panel includes an ELVSS power line 70 , which is electrically connected to the first electrode layer 10 and transmits an ELVSS power signal to the first electrode layer 10 via the ELVSS power line 70 . The ELVSS power line 70 is located in the frame area 110 . Figure 3 As shown, in this embodiment, the ELVSS power trace 70 has a certain line width, and the edge portion of the first electrode layer 10 and the ELVSS power trace 70 may partially overlap, but this is not a limitation. The ELVSS power trace 70 and the first electrode layer 10 may be located on different layers and may be electrically connected to each other through vias.

[0075] Please continue reading Figure 2 , Figure 2Two ELVSS power traces 70 of the display panel are shown. Both ELVSS power traces 70 are located in the border area 110. The resistivity of the ELVSS power traces 70 is greater than that of the traces 51 on the first flexible circuit board 50 and greater than that of the traces 61 on the second flexible circuit board 60. One end of each ELVSS power trace 70 connects to the trace 51 on the first flexible circuit board 50 and extends across the side area 113 until the other end connects to the trace 61 on the second flexible circuit board 60. The two ELVSS power traces 70 extend through different side areas 113 and connect and merge at the traces 51 on the first flexible circuit board 50 and the traces 61 on the second flexible circuit board 60 at two end edge areas 111. The two ELVSS power traces 70, the traces 51 on the first flexible circuit board 50, and the traces 61 on the second flexible circuit board 60 are connected to form a loop. In this embodiment, both ends of the trace 51 on the first flexible circuit board 50 are connected to the two ELVSS power traces 70 , and both ends of the trace 61 on the second flexible circuit board 60 are also connected to the two ELVSS power traces 70 .

[0076] In order to reduce the front area of ​​the display device occupied by the two end edge regions 111, in this embodiment, the OLED display panel 100 is flexible and bendable, but the present invention is not limited thereto. In other embodiments, the OLED display panel 100 may also be non-flexible. The OLED display panel 100 may adopt a COP bending (Chip on PI bending) process. COP is a technical solution for flexible OLEDs. Usually, the display driver chip (IC) is bonded (bonded) to a flexible substrate (the material may be polyimide, PI) by hot pressing and then bent to the back of the display area, and then connected to the display driver circuit board through an irregular square conductive adhesive. Figure 2 is a planar unfolding diagram of the flexible bendable OLED display panel 100, and Figure 2 The position of the middle dotted line is the bending line where the OLED display panel 100 is bent.

[0077] The ELVSS power signal is provided by the motherboard (not shown), which is equipped with a power management integrated circuit (PMIC) to output the ELVSS power signal. In this application, the first flexible circuit board 50 and the second flexible circuit board 60 are both electrically connected to the motherboard to connect and transmit the ELVSS power signal.

[0078] Figure 4 A schematic side view of an OLED display device is shown in which the flexible and bendable OLED display panel 100 is applied to the OLED display device; Figure 5This is a schematic diagram of the back of an OLED display device. Figure 4 and Figure 5 Specifically, the motherboard is connected to a display driver circuit board 90 via a connector 91. The first and second flexible circuit boards 50 and 60 are both electrically connected to the display driver circuit board 90 to receive the ELVSS power signal. Traces 61 are provided on the first and second flexible circuit boards 50 and 60, respectively, to lead out the ELVSS power signal and connect to the ELVSS power trace 70. In this way, the ELVSS power signal output by the motherboard passes through the connector 91, the display driver circuit board 90, the first and second flexible circuit boards 50 and 60, and the ELVSS power trace 70 in sequence, reaching the first electrode layer 10 to provide power to the first electrode layer 10.

[0079] In some embodiments, the traces 61 in the first flexible circuit board 50 and the second flexible circuit board 60 are made of copper, but this is not a limitation. In some embodiments, the ELVSS power trace 70 is a TiAlTi trace, i.e., a trace having a three-layer stacked structure consisting of Ti, Al, and Ti layers, but this is not a limitation. TiAlTi multilayer metal is commonly used for power traces in OLED displays because this metal structure is easy to dry etch.

[0080] It is understandable that, since the OLED display panel has a multi-layer stacked structure, the second flexible circuit board 60 , the first flexible circuit board 50 , and the ELVSS power trace 70 may be disposed on different layers, or may be located on the same layer.

[0081] The display panel of the present application cleverly utilizes a second flexible circuit board 60 (e.g., a touch-sensitive flexible circuit board) to connect the ELVSS power signal and provides a low-resistivity trace 61 (e.g., made of metal copper) to connect and lead out the ELVSS power signal. The trace 61 is connected to the high-resistivity ELVSS power trace 70 (e.g., a three-layer stacked structure of TiAlTi). Therefore, a low-impedance layout design of the ELVSS power trace 70 can be achieved, thereby reducing voltage drop (the actual voltage is increased from 85% of the ELVSS voltage to 90% of the ELVSS voltage) and improving the display effect.

[0082] like Figure 2 As shown, the edge region 111 may further be provided with a display driver chip (IC) 80 , and the driver chip 80 and the first flexible circuit board 50 are located in the same edge region 111 .

[0083] Understandable, see Figure 2The OLED display panel 100 further includes a gate driver 115 and an emission driver 116 disposed in two side regions 113 for connecting to the pixel driving circuit in the TFT substrate 40. The gate driver 115 and the emission driver 116 are disposed between the display area 120 and the ELVSS power line 70.

[0084] Understandable, see Figure 2 The two end side regions 111 of the OLED display panel may further be provided with a dummy circuit (Dummy) 117, a multiplexer (MUX) 118, and the like.

[0085] In the present application, by providing a trace 51 with a low resistivity on the first flexible circuit board 50 and a trace 61 with a low resistivity on the second flexible circuit board 60, the resistance of the ELVSS power trace 70 is reduced, thereby reducing the trace width of the ELVSS power trace 70 in the border area 110. For example, the width of the ELVSS power trace 70 in the side area 113 is estimated to be reduced by 0.1 mm.

[0086] It is understandable that when the OLED display panel is applied to a tablet computer or other electronic device with a larger display screen, the area size of the first electrode layer 10 is also relatively large. To ensure that different areas of the first electrode layer 10 can receive a consistent ELVSS power supply voltage to ensure the consistency of the display pixels, the OLED display panel may also include multiple ELVSS power supply lines (not shown) extending in the display area 120. The multiple ELVSS power supply lines are connected in parallel; and are connected to the display flexible circuit board to receive the ELVSS power supply signal, and are connected to the first electrode layer 10 to transmit the ELVSS power supply signal to the first electrode layer 10. In this way, it is ensured that each area of ​​the entire first electrode layer 10 can uniformly receive the ELVSS power supply voltage signal, thereby ensuring the consistency of pixel luminescence. In addition, to prevent the multiple ELVSS power supply lines 70 extending in the display area 120 from blocking the light output of the organic light-emitting layer 20, the multiple ELVSS power supply lines 70 need to avoid the area where the pixels are located and be arranged in the area between the pixels.

[0087] It is understandable that the present application embodiment uses the layout design of the ELVSS power line as an example to illustrate. Similarly, the layout design of the ELVDD power line can also refer to the layout design of the ELVSS power line to reduce voltage drop, which will not be repeated here.

[0088] See also Figure 4The present application further provides an OLED display device 200 including the above-mentioned OLED display panel 100. The OLED display device 200 further includes a polarizer 210 and a transparent cover plate 230 stacked on the front surface of the OLED display panel 100, and a transparent optical adhesive 250 is further provided between the polarizer 210 and the transparent cover plate 230.

[0089] like Figure 4 As shown, in this embodiment, the OLED display panel 100 is flexible and bendable. The OLED display panel 100 includes a main body 101 and a first bending portion 102 and a second bending portion 103 connecting the opposite ends of the main body 101. The first bending portion 102 and the second bending portion 103 are bent relative to the main body 101 to the back side of the main body 101. Figure 2 The dotted line is the bending line where the first bending portion 102 and the second bending portion 103 are bent relative to the main body 101. Figure 4 As shown, the front side of the OLED display panel 100 is further covered with a flexible encapsulation layer 220 . In the OLED display device 200 , the encapsulation layer 220 is bent together with the OLED display panel 100 .

[0090] The first bending portion 102 and the second bending portion 103 are mainly formed by bending a portion of the TFT substrate 40 located in the edge region 111. Figure 6 shown.

[0091] The main body 101 defines the display area 120 and the two side regions 113. The two end regions 111 are defined by at least the first bent portion 102 and the second bent portion 103. As a result, the first bent portion 102 and the second bent portion 103 do not excessively occupy the front area of ​​the display panel, further reducing the front area of ​​the display panel occupied by the two end regions 111 of the frame region 110.

[0092] The first flexible circuit board 50 and the driving chip 80 are arranged on the first bending portion 102 and located on the surface of the first bending portion 102 away from the main body 101. The second flexible circuit board 60 is arranged on the second bending portion 103 and located on the surface of the second bending portion 103 away from the main body 101. Figure 4 and Figure 5As shown, the OLED display device 200 further includes a display driver circuit board 90 disposed on the back side of the main body 101, approximately located in the area between the first bend portion 102 and the second bend portion 103. The display driver circuit board 90 is electrically connected to the main board (not shown) via a connector 91 to receive an ELVSS power signal. The first flexible circuit board 50 and the second flexible circuit board 60 are both electrically connected to the display driver circuit board 90 to receive the ELVSS power signal.

[0093] It can be understood that the OLED display panel 100 is flexible and bendable, and the TFT substrate 40 is also flexible and bendable. The TFT substrate 40 is a conventional TFT substrate with a multi-layer stacked structure. Figure 6 As shown, the TFT substrate includes a flexible base (polyimide layer, shown as PI1), an insulating layer (SiO x ), a-Si layer, the second polyimide layer (PI2), the insulating layer (SiO x ), insulating layer (SiN x ), insulating layer (SiO x ), gate insulating layer (GI), insulating layer (CI), interlayer dielectric layer (ILD), passivation layer (PVX), planarization layer (PLN1 and PLN2) and other multiple layers, TFT (not shown) and capacitor (not shown) of the pixel driving circuit are formed in a multi-layer stacked structure. Figure 6 As shown, in this embodiment, the ELVSS power supply line 70 is disposed on the planarization layer (PLN1). In other embodiments, the ELVSS power supply line 70 may be disposed on any insulating layer, passivation layer, interlayer dielectric layer, or planarization layer of the TFT substrate.

[0094] The OLED display device 200 further includes a touch layer (not shown). The touch layer can be laminated between the display panel and the polarizer 210, or between the polarizer 210 and the transparent cover 230, but is not limited thereto. In this application, the touch layer is an external plug-in type. The touch layer is connected to the touch-sensitive flexible circuit board.

[0095] Understandably, Figure 4 As shown, the OLED display device 200 further includes some conventional stacked layers (not shown) stacked below the main body 101 of the OLED display panel 100 .

[0096] It should be noted that the above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by any person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application; the embodiments of the present application and the features of the embodiments can be combined with each other unless there is a conflict. Therefore, the scope of protection of the present application shall be based on the scope of protection of the claims.

Claims

1. A display panel comprising a first electrode layer, an organic light-emitting layer, and a second electrode layer stacked in sequence, the display panel being divided into a display area and a frame area, the frame area comprising a first end edge region, a second end edge region, and two opposite side edge regions connected between the first end edge region and the second end edge region, characterized in that: include: A first flexible circuit board is provided in the first end edge region, and a second flexible circuit board is provided in the second end edge region, wherein the first flexible circuit board and the second flexible circuit board obtain a driving signal supplied to the first electrode layer from the mainboard through respective wirings; Two power lines, each power line having opposite ends, one end of each power line connected to the trace of the first flexible circuit board, and the other end connected to the trace of the second flexible circuit board, so that the two power lines, the trace of the first flexible circuit board, and the trace of the second flexible circuit board are connected to form a loop, and the two power lines are electrically connected to the first electrode layer; The resistivity of the power line is higher than the resistivity of the wiring of the first flexible circuit board and the resistivity of the wiring of the second flexible circuit board.

2. The display panel according to claim 1, wherein: The first flexible circuit board is a display flexible circuit board, and the second flexible circuit board is a touch flexible circuit board.

3. The display panel according to claim 1, wherein: The two power lines are respectively arranged in the two different side areas.

4. The display panel according to claim 1, wherein: The driving signal is an ELVSS voltage signal.

5. The display panel according to claim 4, wherein: The first electrode layer is a layer that at least covers the entire display area.

6. The display panel according to claim 1, wherein: The wiring in the first flexible circuit board and the second flexible circuit board are both made of metal copper.

7. The display panel according to claim 1, wherein: The power line is a TiAlTi line.

8. The display panel according to claim 1, wherein: The display panel is flexible and includes a main body and a first bending portion and a second bending portion connecting opposite ends of the main body. The first bending portion and the second bending portion are bent relative to the main body and stacked on the back of the main body.

9. The display panel according to claim 8, wherein: The first flexible circuit board is disposed on the first bending portion and located on a surface of the first bending portion away from the main body portion. The second flexible circuit board is disposed on the second bending portion and located on a surface of the second bending portion away from the main body portion.

10. The display panel according to claim 8, wherein The display panel includes a thin film transistor substrate stacked on a side of the second electrode layer facing away from the organic light emitting layer. The thin film transistor substrate is flexible and includes a flexible base.

11. The display panel according to claim 1, wherein The display panel also includes a plurality of other power lines extending in the display area, the plurality of other power lines are connected in parallel and electrically connected to the first electrode layer, and the plurality of other power lines are electrically connected to the lines of the first flexible circuit board or the lines of the second flexible circuit board.

12. A display device, characterized in that: The device comprises a display panel according to any one of claims 1 to 11, and a polarizer and a transparent cover plate arranged on the display panel.

13. The display device according to claim 12, wherein: The display device further includes a touch layer stacked on the display panel.

14. The display device according to claim 12, wherein: The display device further includes a display driver circuit board, which is electrically connected to the mainboard to obtain the drive signal. The first flexible circuit board and the second flexible circuit board are both electrically connected to the display driver circuit board to obtain the drive signal.

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