Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device, relates to the technical field of display, and is used for reducing the risk that a light-emitting device is damaged due to local heating of the display panel. The display panel comprises a first data line, a first connecting line, a second connecting line, a first power supply auxiliary line, a first power supply bus and a first power supply fan-out line. The first end of the first connecting line is connected with the first data line, and the second end extends to the central area of the display area. The first end of the second connecting line is connected with the second end of the first connecting line, and the second end extends to the edge, close to the fan-out area, of the display area. The first power bus is connected with the plurality of first power auxiliary lines. The first power fan-out line comprises a contact part, the contact part is in contact connection with the first power bus, and the contact part comprises a first side wall. The first power supply auxiliary line comprises a current afflux point connected with the first power supply bus. The at least one current afflux point is closer to the central area of the display area than the first side wall. The display panel is used for displaying images.

Description

Technical Field

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

[0002] Organic Light-Emitting Diode (OLED) display devices have gradually become one of the mainstream products in the display field due to their excellent performance such as self-luminescence, no need for backlight, high contrast, thin thickness, wide viewing angle, fast response speed, can be used for flexible panels, wide operating temperature range, simple structure and process, etc. OLED display panels can be widely used in terminal products such as smartphones, tablets, TVs and wearable devices (such as watches). Among them, high pixel density (Pixels Per Inch; PPI) and narrow frame are currently an important development direction of OLED display devices. Summary of the invention

[0003] An object of the embodiments of the present disclosure is to provide a display panel and a display device, which are used to reduce the local heat generation of the display panel and reduce the risk of damage to the light-emitting device.

[0004] To achieve the above objectives, the embodiments of the present disclosure provide the following technical solutions:

[0005] On the one hand, a display panel is provided. The display panel has a display area and a fan-out area, and the fan-out area is adjacent to one side edge of the display area. The display panel includes a plurality of data lines, a plurality of first connection lines, a plurality of second connection lines, a plurality of first power auxiliary lines, a first power bus and a first power fan-out line. The plurality of data lines are arranged at intervals along a first direction, and the plurality of data lines extend along a second direction, and the second direction intersects with the first direction. The plurality of data lines include a plurality of first data lines and a plurality of second data lines, the plurality of first data lines are located in two edge areas of the display area along the first direction, and the plurality of second data lines are located in the center area of ​​the display area along the first direction. The plurality of first connection lines extend along the first direction; a first end of a first connection line is connected to a first data line, and a second end extends to the center area of ​​the display area along the first direction. The plurality of second connection lines extend along the second direction. A first end of a second connection line is connected to a second end of a first connection line, and the second end extends to the edge of the display area close to the fan-out area. The plurality of first power auxiliary lines are located on a side of the plurality of second connection lines close to the plurality of first data lines, the plurality of first power auxiliary lines are arranged at intervals along the first direction, and the plurality of first power auxiliary lines all extend along the second direction. The first power bus extends along the first direction and is connected to the plurality of first power auxiliary lines. The first power fan-out line is located on a side of the first power bus away from the display area, and the first power fan-out line includes a contact portion. The contact portion is in contact with and connected to the first power bus, and the contact portion includes a first side wall, and the first side wall is close to an edge area of ​​the display area along the first direction. The first power auxiliary line includes at least one current sink point connected to the first power bus. Along the first direction, at least one of the current sink points is closer to a central area of ​​the display area along the first direction than the first side wall.

[0006] In the display panel provided by the above-mentioned embodiment of the present disclosure, the area where the plurality of second connection lines are located is the first area. The contact portion is the portion of the first power fan-out line connected to the first power bus, and the side wall of the contact portion close to the edge area of ​​the display area along the first direction is the first side wall. The position where the first power auxiliary line is electrically connected to the first power bus forms a current sink point. At least one current sink point is closer to the central area of ​​the display area along the first direction than the first side wall, so that at least part of the current on the plurality of first power auxiliary lines can be directly transmitted to the contact portion from the above-mentioned at least one current sink point outward (along the first direction and away from the central area) or downward (along the second direction from the display area to the fan-out area), thereby reducing the current size of the connection position (target area) of the first power auxiliary line and the first power bus close to the first area, thereby reducing the current density of the target area, improving the problem of heat accumulation in the target area, and reducing the risk of failure of the light-emitting functional layer material of the light-emitting device in the target area.

[0007] In some embodiments, the first power auxiliary line includes a current sink point connected to the first power bus, and one end of the first power auxiliary line close to the fan-out region is electrically connected to the first power bus to form the current sink point. The first power bus includes a first extension section and a second extension section. Along the second direction, the first extension section is arranged opposite to the region where the plurality of first power auxiliary lines are located, and the second extension section is arranged opposite to the region where at least part of the plurality of second connection lines are located. At least part of the contact portion is in contact with and connected to the first extension section.

[0008] In some embodiments, the contact portion includes a first sub-portion and a second sub-portion. The first sub-portion is in contact with and connected to the second extension segment and is spaced apart from the first extension segment. The second sub-portion and the first sub-portion are spaced apart along the first direction, and the second sub-portion is located on a side of the first sub-portion away from a central area of ​​the display area along the first direction, a portion of the second sub-portion is in contact with and connected to the first extension segment, and another portion of the second sub-portion is in contact with and connected to the second extension segment.

[0009] In some embodiments, the contact portion includes a first sub-portion and a second sub-portion. The first sub-portion is in contact with and connected to the second extension segment and is spaced apart from the first extension segment. The second sub-portion and the first sub-portion are spaced apart along the first direction, and the second sub-portion is located on a side of the first sub-portion away from a central area of ​​the display area along the first direction, and the second sub-portion is in contact with and connected to the first extension segment.

[0010] In some embodiments, the side wall of the second sub-section close to the first sub-section is flush with the first reference line, or the side wall of the second sub-section close to the first sub-section is located on the side of the first reference line away from the second sub-section. The first reference line coincides with one of the plurality of first power auxiliary lines that is closest to the center area of ​​the display area along the first direction.

[0011] In some embodiments, the contact portion includes a first sub-portion and a second sub-portion. A portion of the first sub-portion is in contact with and connected to the first extension segment, and another portion is in contact with and connected to the second extension segment. The second sub-portion and the first sub-portion are spaced apart along the first direction, and the second sub-portion is located on a side of the first sub-portion away from a central area of ​​the display area along the first direction. The second sub-portion is in contact with and connected to the first extension segment.

[0012] In some embodiments, the contact portion includes a first sub-portion and a second sub-portion. The first sub-portion is in contact with and connected to the first extension segment. The second sub-portion and the first sub-portion are spaced apart along the first direction, and the second sub-portion is located on a side of the first sub-portion away from a central area of ​​the display area along the first direction. The second sub-portion is in contact with and connected to the first extension segment.

[0013] In some embodiments, the first sub-portion is close to a side wall of the center area of ​​the display area along the first direction, flush with the first reference line, or is located on a side of the first reference line away from the center area of ​​the display area along the first direction. The first reference line coincides with one of the plurality of first power auxiliary lines that is closest to the center area of ​​the display area along the first direction.

[0014] In some embodiments, the display panel further includes at least one second power auxiliary line and at least one third connection line. The at least one second power auxiliary line extends along the second direction, the second power auxiliary line is located between two adjacent second connection lines, and one end of the second power auxiliary line close to the fan-out area is connected to the first power bus. The third connection line extends along the first direction, and one end of one of the third connection lines is connected to the first power auxiliary line, and the other end is connected to one of the second power auxiliary lines. Among them, one end of the first power auxiliary line close to the fan-out area is connected to the first power bus to form a current sink point, and at least one of the first power auxiliary lines is connected to the first power bus through the third connection line and the second power auxiliary line in sequence to form a current sink point.

[0015] In some embodiments, the first power bus includes a first extension section and a second extension section. Along the second direction, the first extension section is arranged opposite to the region where the plurality of first power auxiliary lines are located, and the second extension section is arranged opposite to the region where the at least one second power auxiliary line and at least part of the plurality of second connection lines are located. The contact portion is at least partially connected to the second extension section.

[0016] In some embodiments, the contact portion is in contact with and connected to the second extension segment. Along the first direction, the first side wall is closer to the center area of ​​the display area along the first direction than the plurality of first power auxiliary lines. The contact portion further includes a second side wall, the second side wall being closer to the center area of ​​the display area along the first direction. The second side wall is flush with the second power auxiliary line closest to the center area of ​​the display area along the first direction, or the second side wall is closer to the first side wall than the second power auxiliary line closest to the center area of ​​the display area along the first direction.

[0017] In some embodiments, the contact portion includes a first sub-portion and a second sub-portion. At least a portion of the first sub-portion is in contact with and connected to the second extension segment. The second sub-portion and the first sub-portion are spaced apart along the first direction and are located on a side of the first sub-portion away from a central area of ​​the display area along the first direction, and at least a portion of the second sub-portion is in contact with and connected to the first extension segment.

[0018] In some embodiments, the display panel includes a plurality of the second power auxiliary lines, and 2 to 7 second connection lines are disposed between two adjacent second power auxiliary lines.

[0019] In some embodiments, the first sub-section and the second sub-section both extend along the second direction, and the first end of the first sub-section and the first end of the second sub-section are both connected to the first power bus. The first power fan-out line further includes a binding portion, the binding portion extends along the first direction, and the two ends are respectively connected to the second end of the first sub-section and the second end of the second sub-section.

[0020] In some embodiments, a dimension of the second sub-portion along the first direction is greater than a dimension of the first sub-portion along the first direction.

[0021] In some embodiments, the size of the first sub-section along the first direction is D1. The size of the second sub-section along the first direction is D2. Wherein, D1 and D2 satisfy: D2 = (1.2-4) * D1.

[0022] In some embodiments, the first power auxiliary line includes a third extension segment and a fourth extension segment. The third extension segment is connected to the first power bus. The fourth extension segment is located on a side of the third extension segment away from the fan-out region and is connected to the third extension segment. The dimension of the third extension segment along the first direction is greater than the dimension of the fourth extension segment along the first direction.

[0023] In some embodiments, the dimension of the third extension segment along the first direction is D3. The dimension of the fourth extension segment along the first direction is D4. D3 and D4 satisfy: D3 = (2-5) * D4.

[0024] In some embodiments, the first power bus includes a first sub-line and two second sub-lines. The first sub-line extends along the boundary of the fan-out area close to the display area and is electrically connected to the plurality of first power auxiliary lines. At least part of the two second sub-lines are located on a side of the first sub-line away from the display area, and the two second sub-lines are electrically connected to the first sub-line. The two second sub-lines are spaced apart along the first direction, and the two second sub-lines are respectively located at two edge areas of the fan-out area along the first direction. The second sub-line is electrically connected to the first power fan-out line.

[0025] In another aspect, a display device is provided, comprising a driving circuit board and a display panel as described in any one of the above embodiments, wherein the driving circuit board is configured to transmit a control signal to the display panel.

[0026] The above-mentioned display device has the same structure and beneficial technical effects as the display panels provided in some of the above-mentioned embodiments, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required to be used in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limitations on the actual size of the product involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of the signal, etc.

[0028] Figure 1 is a structural diagram of a display device according to some embodiments;

[0029] Figure 2 is another structural diagram of a display device according to some embodiments;

[0030] Figure 3 is a cross-sectional structural diagram of a display panel according to some embodiments;

[0031] Figure 4 is a planar structural diagram of a display panel according to some embodiments;

[0032] Figure 5 for Figure 4 A partial enlarged view of the middle A area;

[0033] Figure 6 is a structural diagram of a display panel according to some embodiments;

[0034] Figure 7 is another structural diagram of a display panel according to some embodiments;

[0035] Figure 8 is another structural diagram of a display panel according to some embodiments;

[0036] Fig. 9 is another structural diagram of a display panel according to some embodiments;

[0037] Fig.10 is another structural diagram of a display panel according to some embodiments;

[0038] Fig.11 is another structural diagram of a display panel according to some embodiments;

[0039] Fig.12 is another structural diagram of a display panel according to some embodiments;

[0040] Fig.13 is another structural diagram of a display panel according to some embodiments;

[0041] Fig.14 is another structural diagram of a display panel according to some embodiments;

[0042] Fig.15 is another structural diagram of a display panel according to some embodiments;

[0043] Fig.16 is another structural diagram of a display panel according to some embodiments;

[0044] Fig.17 is another structural diagram of a display panel according to some embodiments;

[0045] Fig.18 is another structural diagram of a display panel according to some embodiments;

[0046] Fig.19 FIG. 4 is a partially enlarged view of a first power auxiliary line of a display panel according to some embodiments. DETAILED DESCRIPTION

[0047] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present disclosure.

[0048] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and other forms thereof, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open, inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0049] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0050] When describing some embodiments, the term "connection" and its derivative expressions may be used. The term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0051] “At least one of A, B, and C” has the same meaning as “at least one of A, B, or C” and both include the following combinations of A, B, and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C.

[0052] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0053] As used herein, the term "if" is optionally interpreted to mean "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined that" or "if [a stated condition or event] is detected" are optionally interpreted to mean "upon determining that" or "in response to determining that" or "upon detecting [a stated condition or event]" or "in response to detecting [a stated condition or event]," depending on the context.

[0054] The use of "adapted to" or "configured to" herein is meant to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0055] Additionally, the use of “based on” is meant to be open and inclusive, as a process, step, calculation, or other action “based on” one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0056] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of variation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0057] As used herein, "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within the acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism may be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity may also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality may be, for example, the difference between the two equalities is less than or equal to 5% of either one.

[0058] It will be understood that when a layer or an element is referred to as being on another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may be present between the layer or element and the other layer or substrate.

[0059] Exemplary embodiments are described herein with reference to cross-sectional views and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of the layers and the area of ​​the regions are exaggerated for clarity. Therefore, variations in the shapes relative to the drawings due to, for example, manufacturing techniques and / or tolerances are conceivable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but include shape deviations due to, for example, manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shapes of the regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0060] Figure 1 is a structural diagram of a display device according to some embodiments.

[0061] See also Figure 1 The embodiment of the present disclosure provides a display device 1000, which is a product having an image display function. Exemplarily, the display device 1000 may be any device that displays either moving (e.g., video) or fixed (e.g., still image) and either text or image.

[0062] For example, the display device 1000 may be a television, a laptop computer, a tablet computer, a personal digital assistant (PDA), a mobile phone (cell phone), a watch, a clock, a calculator, a GPS receiver / navigator, a camera, a display of a camera view (e.g., a display of a rear-view camera in a vehicle), a wearable device, an augmented reality (AR) device, a virtual reality (VR) device, a vehicle display, a flight display, or any other product or component having a display function. For example, Figure 1 As shown, the display device 1000 may be a mobile phone.

[0063] From the perspective of the light-emitting type of the display device 1000, the display device 1000 may be an organic light-emitting diode display device, a quantum dot electroluminescent display device (Quantum Dot Light Emitting Diodes; referred to as: QLED) or a miniature light-emitting diode (Mini / Micro Light Emitting Display; referred to as: MLED), etc. From the perspective of the form of the display device 1000, the display device 1000 may be a flat display device, a curved display device or a foldable display device, etc. From the perspective of the shape of the display device 1000, the display device 1000 may be rectangular or circular, etc. The embodiments of the present disclosure do not specifically limit this. The following is an example of a rectangular and planar organic light-emitting diode display device to schematically illustrate some embodiments of the present disclosure, but the embodiments of the present disclosure are not limited to this, and any other display device may also be considered as long as the same technical idea is applied.

[0064] Figure 2 is a structural diagram of a display device according to some further embodiments.

[0065] In some embodiments, the display device 1000 includes a display panel 1100 and a driving circuit board 1200. The driving circuit board 1200 may include, for example, a timing controller (TCON), a power management chip DC / DC, and an adjustable resistor divider circuit (generating Vcom) and other driving circuits. The driving circuit board 1200 may also include other circuit structures, which are not listed here one by one. The driving circuit board 1200 is electrically connected to the display panel 1100, and is used to transmit a control signal to the display panel 1100, thereby driving the display panel 1100 to realize image display. In addition, the display device 1000 may also include a touch structure, an under-screen camera, and an under-screen fingerprint recognition sensor, so that the display device 1000 can realize a variety of different functions such as touch, photo taking, video recording, fingerprint recognition or face recognition, which are not specifically limited here.

[0066] Continue reading Figure 2 The display panel 1100 has a display area AA and a peripheral area BB, and the peripheral area BB is located at least on one side of the display area AA. Exemplarily, the peripheral area BB is arranged around the display area AA.

[0067] The display area AA is an area on the display panel 1100 for displaying images. The display area AA is provided with a plurality of sub-pixels P. The sub-pixel P is the smallest light-emitting unit on the display panel 1100 and is used to display images.

[0068] Among them, multiple sub-pixels P can emit light of the same color, such as white light or blue light. In this case, the display panel also includes a color filter layer arranged on the display side, that is, the display panel adopts a COE (full name in English: CF onEncapsulation; Chinese name: color filter layer on encapsulation film) structure. Alternatively, multiple sub-pixels P can emit light of different colors. For example, multiple sub-pixels P include red light sub-pixels emitting red light, green light sub-pixels emitting green light, and blue light sub-pixels emitting blue light.

[0069] A plurality of sub-pixels P are arranged in a plurality of rows and a plurality of columns, each row includes a plurality of sub-pixels P arranged along a first direction X, and a plurality of rows of sub-pixels P are arranged along a second direction Y. Each column includes a plurality of sub-pixels P arranged along a second direction Y, and a plurality of columns of sub-pixels P are arranged along the first direction X. The first direction X and the second direction Y intersect, for example, the first direction X is perpendicular to the second direction Y.

[0070] Each sub-pixel P includes a pixel circuit 100 and a light-emitting device 200. The pixel circuit 100 includes a plurality of thin film transistors (TFT) and at least one capacitor Cst. Exemplarily, the pixel circuit 100 may be a "3T1C" circuit, a "7T1C" circuit, or an "8T1C" circuit, etc. The embodiments of the present disclosure are not limited thereto, and any other pixel circuits may also be considered as long as the same technical idea is applied. Among them, "T" refers to TFT, and the number before "T" refers to the number of TFTs; "C" refers to the capacitor Cst, and the number before "C" refers to the number of capacitors Cst.

[0071] like Figure 2 As shown, the display panel 1100 further includes a plurality of data lines DL, the plurality of data lines DL are arranged at intervals along the first direction X, and the plurality of data lines DL extend along the second direction Y. Each data line DL may be electrically connected to a column of pixel circuits 100 of a column of sub-pixels P, and is configured to transmit a data signal to the column of pixel circuits 100 connected to the data line DL.

[0072] Continue reading Figure 2 The peripheral area BB can be used to set a gate drive circuit (Gate on Array; GOA for short) and control signal lines (such as clock signal lines, power supply voltage signal lines, etc.). Of course, the functions of the peripheral area BB are not limited to this, and the undisclosed embodiments will not be described one by one.

[0073] The peripheral area BB includes a fan-out area (Fanout) BB1 located on one side of the display area AA, that is, the fan-out area BB1 is an area in the peripheral area BB located on one side of the display area AA. The fan-out area BB1 is adjacent to one side edge of the display area AA, that is, the side edge of the fan-out area BB1 close to the display area AA coincides with the side edge of the display area AA close to the fan-out area BB1. The fan-out area BB1 can be used to lead out the signal line of the peripheral area and bind it to the driver circuit board or driver chip. Exemplarily, the fan-out area BB1 is adjacent to the lower edge of the display area AA.

[0074] Figure 3 is a cross-sectional structural diagram of a display panel according to some embodiments.

[0075] See also Figure 3 In some embodiments, the display panel 1100 includes a stacked array substrate 400, a light emitting device 200, and an encapsulation layer 300. Of course, the display panel 1100 may also include a functional stack disposed on the side of the encapsulation layer 300 away from the array substrate 400. The functional stack may be, for example, a touch function layer, an anti-reflection layer, a hardening layer, a color film layer (the display panel adopts a COE structure), and an anti-fingerprint layer. One or more layers, so that the display panel can achieve corresponding functions, the embodiments of the present disclosure do not specifically limit the types and quantities of the above-mentioned functional stacks.

[0076] The array substrate 400 includes a substrate 410. The substrate 410 may be a rigid substrate, the material of which includes, for example, glass. Alternatively, the substrate 410 may be a flexible substrate, the material of which includes, for example, any one of polyimide (PI), polycarbonate (PC), or polyvinyl chloride (PVC).

[0077] The array substrate 400 also includes a semiconductor layer ACT, a first gate insulation layer GI1, a first gate conductive layer GT1, a second gate insulation layer GI2, a second gate conductive layer GT2, an interlayer dielectric layer ILD, a first source-drain conductive layer SD1, a first planarization layer PLN1, a second source-drain conductive layer SD2, a second planarization layer PLN2, a third source-drain conductive layer SD3 and a third planarization layer PLN3, which are arranged in sequence along a direction perpendicular to the substrate 410 and away from the substrate 410.

[0078] The thin film transistor may include, for example, a semiconductor pattern 401 located on the semiconductor layer ACT, a gate 402 located on the first gate conductive layer GT1, and a source 403 and a drain 404 located on the first source-drain conductive layer SD1. The capacitor Cst may include a first electrode C1 located on the first gate conductive layer GT1 and a second electrode C2 located on the second gate conductive layer GT2.

[0079] The light emitting device 200 includes an anode 201, a light emitting functional layer 202, and a cathode layer 203 that are stacked. The cathode layers 203 of the plurality of light emitting devices 200 are interconnected to form a continuous whole layer structure. The display panel 1100 may further include a pixel defining layer PDL, which is disposed on a side of the anode 201 away from the array substrate 400, and the pixel defining layer PDL includes a plurality of openings, and at least a portion of each light emitting functional layer 202 is located in one opening.

[0080] The encapsulation layer 300 is configured to reduce the risk of water vapor and oxygen in the external environment entering the light emitting device 200, thereby increasing the service life of the display panel 1100. The encapsulation layer 300 may be an encapsulation film or an encapsulation substrate. Figure 3 As shown, the encapsulation layer 300 may be an encapsulation film. In this case, the encapsulation layer 300 may include a first inorganic encapsulation layer 301 , an organic encapsulation layer 302 , and a second inorganic encapsulation layer 303 which are sequentially stacked.

[0081] Figure 4 is a planar structural diagram of a display panel 1100 according to some embodiments.

[0082] See also Figure 4 , the plurality of data lines DL may include a plurality of first data lines DL1 and a plurality of second data lines DL2, the plurality of first data lines DL1 are located in two edge areas AA1 of the display area AA along the first direction X, and the plurality of second data lines DL2 are located in a central area AA2 of the display area AA along the first direction X. That is, the plurality of first data lines DL1 are respectively disposed on both sides of the plurality of second data lines DL2 along the first direction X.

[0083] Continue reading Figure 4 The display panel 1100 further includes a plurality of first connection lines 131 and a plurality of second connection lines 132 .

[0084] The plurality of first connection lines 131 are arranged at intervals along the second direction Y, and the plurality of first connection lines 131 extend along the first direction X. The plurality of first connection lines 131 correspond to the plurality of first data lines DL1 one by one. A first end (an end close to the edge area AA1 of the display area AA) of a first connection line 131 is connected to a first data line DL1, and a second end (an end close to the center area AA2 of the display area AA) extends to the center area AA2 of the display area AA along the first direction X. Exemplarily, an end of the first connection line 131 away from the first data line DL1 extends to a region of the center area AA2 close to the edge area AA1.

[0085] The plurality of second connection lines 132 are arranged at intervals along the first direction X, and the plurality of second connection lines 132 extend along the second direction Y. A first end (an end away from the fan-out area BB1) of a second connection line 132 is connected to a second end of a first connection line 131, and a second end (an end close to the fan-out area BB1) of the second connection line 132 extends to an edge of the display area AA close to the fan-out area BB1.

[0086] Each first data line DL1 is connected to the central area AA2 of the display area AA along the first direction X through a first connection line 131 and a second connection line 132 in sequence, and is led out from the edge of the central area AA2 close to the fan-out area BB1. This arrangement of the data lines DL is also called display area fan-out (Fanout In AA; abbreviated as: FIAA) or panel fan-out (Fanout In Panel; abbreviated as: FIP). It is beneficial to reduce the size of the fan-out area BB1 along the second direction Y, that is, to reduce the border width of the display panel 1100, which is beneficial to the display device 1000 to achieve a narrow border.

[0087] A first connection line 131 and a second connection line 132 connected to each other are called a transfer line 13 , and a first data line DL1 is led out from the edge of the central area AA2 close to the fan-out area BB1 through the transfer line 13 .

[0088] In order to simplify the description, in the following embodiments of the present disclosure, the area where the plurality of second connection lines 132 are located is referred to as the first area 101. It can be understood that the first area 101 includes the area between the adjacent second connection lines 132, and the plurality of second connection lines 132 connected to the plurality of first data lines DL1 on the same side together form one first area 101, so that the central area AA2 of the display area AA may include two first areas 101 spaced apart along the first direction X. The first area 101 is located within the range of the central area AA2 of the display area AA in the first direction X.

[0089] See also Figure 4 and Figure 5In some embodiments, in addition to other areas where the second connection line 132 is set in the display area AA, a plurality of auxiliary power lines 50 are also set. The plurality of auxiliary power lines 50 are arranged at intervals along the first direction X, and the plurality of auxiliary power lines 50 extend along the second direction Y. The auxiliary power line 50 is electrically connected to the cathode power line VSS1 of the peripheral area BB, and then electrically connected to the cathode layer, which can reduce the resistance of the cathode layer, thereby reducing the voltage drop on the cathode layer, and improving the display uniformity of the display area AA. The above-mentioned setting method of the auxiliary power line 50 is also called SIP (VSS In Panel) technology. Among them, the cathode power line VSS1 extends along the circumference of the display area AA and at least partially surrounds the display area AA. The cathode power line VSS1 is configured to be electrically connected to the cathode layer of the display panel 1100.

[0090] It is understandable that in Figure 5 In order to distinguish the data line DL, the first connection line 131, the second connection line 132 and the power auxiliary line 50, the data line DL, the first connection line 131, the second connection line 132 and the power auxiliary line 50 use different line types (solid line / dashed line / thin line / thick line). The thickness and virtuality of the line do not represent the width of the line itself or the continuity of the extension, but are only used to distinguish different signal lines. In other figures of the present disclosure, as specifically described in the figure, each signal line adopts a similar drawing method.

[0091] It can be understood that the plurality of data lines DL (a plurality of first data lines DL1 and a plurality of second data lines DL2), the plurality of second connection lines 132 and the plurality of power auxiliary lines 50 are arranged at intervals along the first direction X, and all extend along the second direction Y. Based on this, the plurality of data lines DL and the plurality of power auxiliary lines 50 can be arranged in the same conductive layer, for example, the plurality of data lines DL and the plurality of power auxiliary lines 50 can be arranged in the third source-drain conductive layer. The plurality of first connection lines 131 are arranged at intervals along the second direction Y, and the plurality of first connection lines 131 extend along the first direction X. In order to avoid cross interference between the first connection lines 131 and the data lines DL, the plurality of first connection lines 131 can be arranged in the second source-drain conductive layer.

[0092] The plurality of power auxiliary lines 50 include a plurality of first power auxiliary lines 501. The plurality of first power auxiliary lines 501 are arranged at intervals along the first direction X, and the plurality of first power auxiliary lines 501 extend along the second direction Y. The plurality of first power auxiliary lines 501 are located on a side of the plurality of second connection lines 132 close to the first data line DL1. In other words, the plurality of first power auxiliary lines 501 are located on a side of the first area 101 away from the central area AA2 of the display area AA, that is, the plurality of first power auxiliary lines 501 are located in the edge area AA1 of the display area AA along the first direction X.

[0093] like Figure 5As shown, the display panel 1100 further includes a first power bus VSS2, which extends along a first direction X and is connected to the ends of the plurality of first power auxiliary lines 501 close to the fan-out area BB1. The first power bus VSS2 is used to electrically connect to the plurality of first power auxiliary lines 501 and connect the plurality of first power auxiliary lines 501 to the fan-out area BB1, so as to facilitate transmission of voltage signals to the plurality of first power auxiliary lines 501.

[0094] In some embodiments, Figure 5 As shown, the first power bus VSS2 includes a first sub-line VSS21 and two second sub-lines VSS22 ( Figure 5 Only one second sub-line VSS22 is shown in the figure. The first sub-line VSS21 extends along the boundary of the fan-out area BB1 close to the display area AA, or in other words, the first sub-line VSS21 extends along the boundary line between the fan-out area BB1 and the display area AA. The first sub-line VSS21 is electrically connected to the plurality of first power auxiliary lines 501.

[0095] At least part of the two second sub-lines VSS22 is located on a side of the first sub-line VSS21 away from the display area AA, and is electrically connected to the first sub-line VSS21. The two second sub-lines VSS22 are arranged at intervals along the first direction X, and the two second sub-lines VSS22 are respectively located at two edge areas of the fan-out area BB1 along the first direction X. The second sub-line VSS22 is electrically connected to the first power fan-out line VSS3.

[0096] It is understandable that if Figure 4 As shown, the display panel 1100 may be symmetrically arranged about a center line along the first direction X, so that although Figure 5 Only one second sub-line VSS22 is shown, but it is easy to imagine that Figure 4 A second sub-line VSS22 is also included in the area symmetrical to area A.

[0097] Exemplarily, the first sub-line VSS21 and the second sub-line VSS22 may be located in different conductive layers to meet the wiring requirements of the display panel 1100. For example, the first sub-line VSS21 may be located in the third source-drain conductive layer, and the second sub-line VSS22 may be located in the first source-drain conductive layer. Of course, the embodiments of the present disclosure are not limited thereto, as long as the same technical idea is adopted.

[0098] like Figure 5 As shown, along the first direction X, the first power bus VSS2 may include a first extension section 21 and a second extension section 22. Along the second direction Y, the first extension section 21 is arranged opposite to the region where the plurality of first power auxiliary lines 501 are located, and the second extension section 22 is arranged opposite to the region where at least part of the second connection lines 132 (at least part of the second connection lines 132 among the plurality of second connection lines 132) are located.

[0099] It can be understood that the area where the multiple first power auxiliary lines 501 are located includes the area where the first power auxiliary lines 501 themselves are located, and the area between two adjacent first power auxiliary lines 501. In other words, the area where the multiple first power auxiliary lines 501 are located refers to the area between a first power auxiliary line 501 closest to the first area 101 and a first power auxiliary line 501 farthest from the first area 101, and includes the area where the above two first power auxiliary lines 501 (the first power auxiliary lines 501 closest to / farthest from the first area 101) are located. Based on this, along the first direction X, one end of the first extension section 21 is flush with a first power auxiliary line 501 closest to the first area 101, and the other end is flush with a first power auxiliary line 501 farthest from the first area 101. Based on this, the position of a first power auxiliary line 501 closest to the first area 101 is set as the first reference line L1, the first extension segment 21 and the second extension segment 22 are separated from the first reference line L1, one end of the first extension segment 21 extends to the first reference line L1, and the other end extends to a first power auxiliary line 501 closest to the edge of the display area AA.

[0100] The region where at least part of the plurality of second connection lines 132 are located may be a region where the plurality of second connection lines 132 are located near the first power auxiliary line 501 among the plurality of second connection lines 132. The region where the plurality of second connection lines 132 are located is similar to the division method of the region where the plurality of first power auxiliary lines 501 are located, and the embodiments of the present disclosure will not be repeated here. Exemplarily, one end of the second extension segment 22 along the first direction X extends to the first reference line L1 and is connected to the first extension segment 21, and the other end extends to the boundary of the first region 101 away from the first data line DL1.

[0101] It can be understood that the first power bus VSS2 is continuous along the first direction X, and both ends extend out of the boundaries of the display area AA. Based on this, the first power bus VSS2 may also include other extension segments, such as an extension segment located between the two second extension segments, and a portion located on the side of the first extension segment away from the second extension segment, which are not listed here one by one.

[0102] Continue reading Figure 5 The display panel 1100 further includes a first power fan-out line VSS3. The first power fan-out line VSS3 is located at a side of the first power bus VSS2 away from the display area AA and is electrically connected to the first power bus VSS2, and is used to connect the first power bus VSS2 to a side of the fan-out area BB1 away from the display area AA, so as to transmit a voltage signal to the first power fan-out line VSS3.

[0103] The first power auxiliary line 501 is electrically connected to the first power fan-out line VSS3 through the first sub-line VSS21 and the second sub-line VSS22 in sequence. Exemplarily, the first power fan-out line VSS3 and the second sub-line VSS22 are located in different conductive layers to meet the wiring requirements of the display panel 1100. For example, the first power fan-out line VSS3 can be located on the second source-drain conductive layer.

[0104] In some embodiments, the first power fan-out line VSS3 is further configured to be connected to the driving circuit board ( Figure 5 The power management chip of the driving circuit board is connected to the DC / DC of the power management chip (not shown in the figure). For example, the first power fan-out line VSS3 is connected to the power management chip of the driving circuit board through a flexible printed circuit (FPC). In this way, the power management chip can be electrically connected to the power auxiliary line 50 and the cathode layer through the FPC, the first power fan-out line VSS3, the first power bus VSS2, and the cathode power line VSS1 in sequence, and transmit the power signal to the cathode layer.

[0105] The study found that when the first power fan-out line VSS3 is arranged on a side of the first area 101 close to the fan-out area BB1, that is, along the first direction X, the first power fan-out line VSS3 is closer to the central area AA2 of the display area AA than the first power auxiliary line 501, the current on the first power auxiliary line 501 and the current on the cathode power line VSS1 located on both sides of the display area AA along the first direction X are first transmitted to the first power bus VSS2 along the second direction Y, and then transmitted to the first power fan-out line VSS3 along the first direction X on the first power bus VSS2. In this way, at the connection between (one or more) first power auxiliary lines 501 and the first power bus VSS2 near the first area 101, since the current transmitted along the first power bus VSS2 and along the first direction X is included at the same time, the current density is relatively large, that is, in the connection area between the first power auxiliary line 501 and the first power bus VSS2 near the first area 101, the current density is relatively large, there is heat accumulation and it is easy to cause burning at this position, resulting in an increased risk of failure of the light-emitting functional layer material of the light-emitting device in this area.

[0106] In order to solve the above technical problems and reduce the current density in the connection area between the first power auxiliary line 501 and the first power bus VSS2 near the first area 101, an embodiment of the present disclosure provides a display panel 1100, such as Figure 5As shown, the first power fan-out line VSS3 includes a contact portion 31, the contact portion 31 is in contact with the first power bus VSS2, and the contact portion 31 includes a first side wall 313, the first side wall 313 is close to the edge area AA1 of the display area AA along the first direction X, that is, the first side wall 313 is a side wall on the contact portion 31 close to the edge of the display area AA. Among them, the first power auxiliary line 501 includes at least one current sink point 11 connected to the first power bus VSS2. Along the first direction X, at least one current sink point 11 is closer to the center area AA2 of the display area AA along the first direction X than the first side wall 313.

[0107] The contact portion 31 refers to the portion of the first power fan-out line VSS3 connected to the first power bus VSS2, and the side wall of the contact portion 31 close to the edge area AA1 of the display area AA along the first direction X is the first side wall 313. The position where the first power auxiliary line 501 is electrically connected to the first power bus VSS2 forms a current sink point 11, and the current on the first power auxiliary line 501 can be transmitted from the current sink point 11 to the first power bus VSS2.

[0108] At least one current confluence point 11 is closer to the central area AA2 of the display area AA along the first direction X than the first side wall 313. In the embodiment of the present disclosure, the current confluence point 11 located on the first side wall 313 close to the central area AA2 of the display area AA along the first direction X is the first current confluence point 111. That is, at least a portion of the contact portion 31 is electrically connected to a side of the first current confluence point 111 away from the central area AA2 of the display area AA along the first direction X.

[0109] The first current confluence point 111 is closer to the central area AA2 of the display area AA along the first direction X than the first side wall 313. The first current confluence point 111 and the contact portion 31 are arranged opposite to each other along the second direction Y, or the first current confluence point 111 is located on a side of the contact portion 31 close to the central area AA2 of the display area AA along the first direction X.

[0110] Exemplarily, when the first current confluence point 111 and the contact portion 31 are arranged relative to each other along the second direction Y, the current transmitted from the first current confluence point 111 to the first power bus VSS2 by the first power auxiliary line 501 can be directly transmitted to the contact portion 31 along the second direction Y and in the direction close to the fan-out area BB1 (from top to bottom) on the first power bus VSS2, and transmitted to the first power fan-out line VSS3.

[0111] Exemplarily, when the first current confluence point 111 is located on a side of the contact portion 31 close to the central area AA2 of the display area AA along the first direction X, the current transmitted from the first current confluence point 111 to the first power bus VSS2 by the first power auxiliary line 501 can be transmitted on the first power bus VSS2 along the first direction X and away from the central area AA2 of the display area AA along the first direction X (along the first direction X and away from the central area AA2) to the contact portion 31, and transmitted to the first power fan-out line VSS3.

[0112] Based on this, when at least one current confluence point 11 is closer to the central area AA2 of the display area AA along the first direction X than the first side wall 313, at least part of the current on the multiple first power auxiliary lines 501 can be directly transmitted from the first current confluence point 111 to the contact portion 31 outward (along the first direction X and away from the central area AA2) or downward (along the second direction Y from the display area AA to the fan-out area BB1), which can reduce the current size of the connection position between the first power auxiliary line 501 and the first power bus VSS2 near the first area 101 (hereinafter referred to as: target area M), thereby reducing the current density of the target area M, improving the problem of heat accumulation in the target area M, and reducing the risk of failure of the light-emitting functional layer material of the light-emitting device in the target area M.

[0113] like Figure 5 As shown, in some embodiments, the first power auxiliary line 501 includes a current sink point 11 connected to the first power bus VSS2, and one end of the first power auxiliary line 501 close to the fan-out area BB1 is electrically connected to the first power bus VSS2 to form a current sink point 11.

[0114] In some embodiments, Figure 5 As shown, at least part of the contact portion 31 is in contact with the first extension section 21. In this way, at least part of the current of the first power auxiliary line 501 can be transmitted from the part of the contact portion 31 that is in contact with the first extension section 21 to the contact portion 31, and then to the first power fan-out line VSS3. The current density of the target area M is reduced, the problem of heat accumulation in the target area M is improved, and the risk of failure of the light-emitting functional layer material of the light-emitting device in the target area is reduced.

[0115] It is understood that in the embodiments of the present disclosure, "contact connection" means that the two are in direct contact and connected to each other, wherein the two may be located in the same conductive layer or in different conductive layers, and when the two are located in different conductive layers, the two may be connected through a via. Exemplarily, the contact portion 31 is in contact with the first extension segment 21, the contact portion 31 is located in the second source-drain conductive layer, the first extension segment 21 is located in the first source-drain conductive layer, and the contact portion 31 is connected to the first extension segment 21 through a via.

[0116] For example, the contact portion 31 may be partially in contact with the first extension segment 21 and partially in contact with the second extension segment 22 (eg, Figure 6 to Figure 9 Alternatively, the contact portion 31 may be completely in contact with the first extension section 21 (as shown). Figure 5 and Fig.10 shown).

[0117] In some embodiments, see Figure 6 The contact portion 31 includes a first sub-portion 311 and a second sub-portion 312. The first sub-portion 311 is in contact with the second extension segment 22 and has a spacing D5 with the first extension segment 21. The second sub-portion 312 and the first sub-portion 311 are spaced apart along the first direction X, and the second sub-portion 312 is located on one side of the first sub-portion 311 away from the central area AA2 of the display area AA along the first direction X ( Figure 6 ), a part of the second sub-portion 312 is in contact with and connected to the first extension section 21, and another part is in contact with and connected to the second extension section 22. That is to say, the contact portion 31 is only in contact with and connected to the first extension section 21 in a part of the area away from the central area AA2 of the display area AA, so that it is beneficial to increase the interval between the first power fan-out line VSS3 and the edge of the display panel 1100 in the first direction X (i.e., increase the left space of the first power fan-out line VSS3), which is beneficial to increase the wiring space of the fan-out area BB1, and is beneficial to the routing design of the signal line of the gate drive circuit.

[0118] Understandably, Figure 6 The structure diagram of the display panel is shown when part of the second sub-section is in contact with the first extension section and the entire first sub-section is in contact with the second extension section. In addition, the contact portion 31 is arranged as a first sub-section 311 and a second sub-section 312 arranged at intervals, which is conducive to setting other wiring between the first sub-section 311 and the second sub-section 312, for example, a signal line of a touch structure can be set between the first sub-section 311 and the second sub-section 312.

[0119] In other embodiments, see Figure 7The contact portion 31 includes a first sub-portion 311 and a second sub-portion 312. The first sub-portion 311 is in contact with the second extension segment 22 and is spaced apart from the first extension segment 21. The second sub-portion 312 and the first sub-portion 311 are spaced apart along the first direction X, and the second sub-portion 312 is located on one side of the first sub-portion 311 away from the central area AA2 of the display area AA along the first direction X ( Figure 7 ). Among them, Figure 7 This is a structural diagram of the display panel when the second sub-portion is in contact and connection with the first extension section, and the first sub-portion is in contact and connection with the second extension section.

[0120] The second sub-portion 312 (the entire portion along the first direction X) is in contact with the first extension section 21. In this way, the entire second sub-portion 312 is in contact with the first extension section 21, which can increase the contact length between the contact portion 31 and the first extension section 21, thereby increasing the current directly transmitted to the second sub-portion 312 and reducing the current density of the target area M. In addition, the interval between the first power fan-out line VSS3 and the edge of the display panel 1100 in the first direction X can be taken into account at the same time, which is conducive to increasing the wiring space on the side of the first power fan-out line VSS3 in the fan-out area BB1 away from the central area AA2 of the display area AA, and is conducive to the routing design of the signal line of the gate drive circuit.

[0121] For example, in some display panels with small wiring space, the following can be used: Figure 6 or Figure 7 The structural design of the first power fan-out line VSS3 shown can reduce the current density in the target area M while taking into account the wiring space of the first power fan-out line VSS3 away from the central area AA2 of the display area AA.

[0122] In some embodiments, Figure 7 As shown, the side wall 315 of the second sub-portion 312 close to the first sub-portion 311 (hereinafter referred to as the third side wall 315) is flush with the first reference line L1. In this way, while the current directly transmitted to the second sub-portion 312 by the first extension section 21 is increased and the current density in the target area M is reduced, the wiring space of the first power fan-out line VSS3 away from the side of the central area AA2 of the display area AA can be greatly increased.

[0123] Among them, the first reference line L1 coincides with a first power auxiliary line 501 that is closest to the central area AA2 of the display area AA along the first direction X. In other words, the position of the first power auxiliary line 501 that is closest to the central area AA2 of the display area AA along the first direction X among the multiple first power auxiliary lines 501 is the first reference line L1.

[0124] Of course, in some other embodiments, see Figure 8, the side wall (third side wall 315) of the second sub-section 312 close to the first sub-section 311 can also be located on the side of the first reference line L1 away from the second sub-section 312. In this way, the current transmitted to the first power bus VSS2 by the part of the first power auxiliary line 501 close to the first area 101 can be transmitted to the first sub-section 311 in a direction away from the first area 101, thereby reducing the current density in the target area M. Figure 8 This is a structural diagram of the display panel when the second sub-portion is spaced apart from the first reference line.

[0125] In some embodiments, see Fig. 9 The contact portion 31 includes a first sub-portion 311 and a second sub-portion 312. The second sub-portion 312 is spaced apart from the first sub-portion 311 along the first direction X, and the second sub-portion 312 is located on a side of the first sub-portion 311 away from the central area AA2 of the display area AA along the first direction X. Exemplarily, there is a gap between the second sub-portion 312 and the first sub-portion 311. Part of the first sub-portion 311 is in contact with and connected to the first extension segment 21, and the other part is in contact with and connected to the second extension segment 22; the second sub-portion 312 is in contact with and connected to the first extension segment 21. In this way, the connection length between the first power fan-out line VSS3 and the first extension section 21 of the first power bus VSS2 can be further increased, so that the current on the plurality of first power auxiliary lines 501 and the cathode power line VSS1 can be directly transmitted from the second sub-section 312 and the first sub-section 311 in contact with the first extension section 21 to the first power fan-out line VSS3, thereby reducing the current size of the target area M, thereby reducing the current density of the target area M, and reducing the risk of heat accumulation in the target area M and damage to the light-emitting device. Among them, Fig. 9 This is a structural diagram of the display panel when the second sub-portion is in contact and connection with the first extension section, and part of the first sub-portion is in contact and connection with the second extension section.

[0126] In other embodiments, see Fig.10 , the contact portion 31 includes a first sub-portion 311 and a second sub-portion 312. The second sub-portion 312 is spaced apart from the first sub-portion 311 along the first direction X, and the second sub-portion 312 is located on the side of the first sub-portion 311 away from the central area of ​​the display area AA along the first direction X. Exemplarily, there is a gap between the second sub-portion 312 and the first sub-portion 311. Among them, the first sub-portion 311 and the second sub-portion 312 are both in contact and connected with the first extension section 21. In this way, the connection length between the first power fan-out line VSS3 and the first extension section 21 of the first power bus VSS2 can be greatly increased, and the current on the first power auxiliary line 501 and the cathode power line VSS1 transmitted to the target area M can be greatly reduced, and the current density of the target area M can be greatly reduced, and the risk of heat accumulation in the target area M and damage to the light-emitting device can be reduced. Among them, Fig.10This is a structural diagram of the display panel when all the contact portions are in contact with and connected to the first extension section and are spaced apart from the first reference line.

[0127] For example, see Fig.10 , the side wall (second side wall 314) of the first sub-portion 311 close to the central area AA2 of the display area AA along the first direction X is located on the side of the first reference line L1 away from the central area AA2 of the display area AA along the first direction X. In this way, the current transmitted to the first power bus VSS2 by the part of the first power auxiliary line 501 close to the first area 101 can be transmitted to the first sub-portion 311 in a direction away from the first area 101, thereby reducing the current density in the target area M.

[0128] Among them, the first reference line L1 coincides with a first power auxiliary line 501 that is closest to the central area AA2 of the display area AA along the first direction X. In other words, the position of the first power auxiliary line 501 that is closest to the central area AA2 of the display area AA along the first direction X among the multiple first power auxiliary lines 501 is the first reference line L1.

[0129] For example, see Figure 5 , the side wall of the first sub-portion 311 close to the central area AA2 of the display area AA along the first direction X (hereinafter referred to as the second side wall 314) is flush with the first reference line L1. In this way, while increasing the current directly transmitted to the second sub-portion 312 by the first extension section 21 and reducing the current density in the target area M, the wiring space of the first power fan-out line VSS3 away from the central area AA2 of the display area AA can also be greatly increased.

[0130] For example, see Figure 5 , Fig. 9 and Fig.10 In some display panels where the wiring space of the fan-out area BB1 is sufficient, for example, when the wiring space of the first power fan-out line VSS3 is large and away from the central area AA2 of the display area AA, the following can be used: Figure 5 , Fig. 9 and Fig.10 The structural design of the first power fan-out line VSS3 shown can greatly reduce the current density of the target area M, thereby reducing the current density of the target area M and reducing the risk of heat accumulation in the target area M and damage to the light-emitting device.

[0131] See also Fig.11 In some embodiments, at least one first power auxiliary line 501 includes two current sink points 11 connected to the first power bus VSS2. At this time, the display panel 1100 also includes at least one second power auxiliary line 502 and at least one third connection line 133. Fig.11This is a structural diagram of a display panel including a second power auxiliary line.

[0132] The second power auxiliary line 502 extends along the second direction Y, each second power auxiliary line 502 is located between two adjacent second connection lines 132, and one end of the second power auxiliary line 502 close to the fan-out area BB1 is connected to the first power bus VSS2. In other words, the plurality of power auxiliary lines 50 also includes at least one second power auxiliary line 502, and the second power auxiliary line 502 is located in the first area 101.

[0133] One end of each first power auxiliary line 501 close to the fan-out area BB1 is connected to the first power bus VSS2 to form a current sink point 11, and at least one first power auxiliary line 501 is connected to the first power bus VSS2 through the third connection line 133 and the second power auxiliary line 502 in sequence to form a current sink point 11. In this way, the current on at least one first power auxiliary line 501 can be transmitted to the first power bus VSS2 through the third connection line 133 and the second power auxiliary line 502 in sequence, thereby reducing the current flowing through the target area M and reducing the current density of the target area M.

[0134] In some embodiments, Fig.11 As shown, the display panel 1100 further includes a plurality of auxiliary connection lines 134 , which are spaced apart along the second direction Y and extend along the first direction X. The third connection line 133 may be shared with the auxiliary connection line 134 .

[0135] It can be understood that each of the multiple auxiliary connection lines 134 is electrically connected to at least one power auxiliary line 50 to connect the multiple power auxiliary lines 50 to form a mesh structure, thereby reducing the resistance of the multiple power auxiliary lines 50 and the multiple auxiliary connection lines 134, and reducing the voltage drop of the multiple power auxiliary lines 50 and the multiple auxiliary connection lines 134.

[0136] Among them, multiple auxiliary connection lines 134 and multiple first power auxiliary lines 501 are located in different conductive layers to reduce the risk of signal interference between the multiple auxiliary connection lines 134 and the multiple first power auxiliary lines 501. Exemplarily, the multiple auxiliary connection lines 134 can be set in the second source-drain conductive layer, and the multiple first power auxiliary lines 501 can be set in the third source-drain conductive layer.

[0137] Continue reading Fig.11In some embodiments, the first power bus VSS2 includes a first extension section 21 and a second extension section 22. Along the second direction Y, the first extension section 21 is arranged opposite to the region where the plurality of first power auxiliary lines 501 are located, and the second extension section 22 is arranged opposite to the region where (all) the second power auxiliary lines 502 and at least part of the plurality of second connection lines 132 are located.

[0138] At least part of the contact portion 31 is connected to the second extension section 22, which is beneficial to increase the wiring space of the first power fan-out line VSS3 away from the central area AA2 of the display area AA, and reduce the size of the fan-out area BB1 along the first direction X. For example, Fig.11 As shown, the contact portion 31 may be completely connected to the second extension segment 22 , and there is a gap between the contact portion 31 (the second sub-portion 312 ) and the first reference line L1 .

[0139] It can be understood that the area where the multiple first power auxiliary lines 501 are located includes the area where the first power auxiliary lines 501 themselves are located, and the area between two adjacent first power auxiliary lines 501. In other words, the area where the multiple first power auxiliary lines 501 are located refers to the area between a first power auxiliary line 501 closest to the first area 101 and a first power auxiliary line 501 farthest from the first area 101, and includes the area where the above two first power auxiliary lines 501 are located. Based on this, along the first direction X, one end of the first extension section 21 is flush with a first power auxiliary line 501 closest to the first area 101, and the other end is flush with a first power auxiliary line 501 farthest from the first area 101.

[0140] The area where the second power auxiliary line 502 and at least part of the second connection lines 132 among the multiple second connection lines 132 are located includes the area where the second power auxiliary line 502 and part of the second connection lines 132 themselves are located, as well as the area located between adjacent second connection lines 132, adjacent second power auxiliary lines 502, and adjacent second power auxiliary lines 502 and second connection lines 132.

[0141] Continue reading Fig.11 In some embodiments, the contact portion 31 is completely in contact with the second extension section 22. Along the first direction X, the first side wall 313 of the contact portion 31 is closer to the central area AA2 of the display area AA along the first direction X than the plurality of first power auxiliary lines 501. In other words, the left boundary of the contact portion 31 is located on the left side of the first reference line L1, so that the wiring space of the first power fan-out line VSS3 away from the central area AA2 of the display area AA can be greatly increased.

[0142] The contact portion 31 further includes a second side wall 314, and the second side wall 314 is close to the central area AA2 of the display area AA along the first direction X. That is, the second side wall 314 is a side wall of the contact portion 31 close to the center of the display area AA. Fig.11 As shown, the second side wall 314 is closer to the first side wall 313 than the second power auxiliary line 502 (hereinafter referred to as the target second power auxiliary line 5021) which is closest to the central area AA2 of the display area AA along the first direction X, that is, there is a gap between the second side wall 314 and the target second power auxiliary line 5021 along the first direction X. Alternatively, the second side wall 314 is flush with the second power auxiliary line 502 which is closest to the central area AA2 of the display area AA along the first direction X (not shown in the figure).

[0143] For example, Fig.11 As shown, the second side wall 314 is flush with the edge of the second sub-line VSS22 close to the central area AA2 of the display area AA.

[0144] In other embodiments, see Fig.12 The contact portion 31 includes a first sub-portion 311 and a second sub-portion 312. The second sub-portion 312 and the first sub-portion 311 are spaced apart along the first direction X, and the second sub-portion 312 is located on a side of the first sub-portion 311 away from the central area AA2 of the display area AA along the first direction X ( Fig.12 ). At least part of the first sub-portion 311 is in contact with and connected to the second extension section 22, and at least part of the second sub-portion 312 is in contact with and connected to the first extension section 21. Based on this, the current flowing through the target area M can be further reduced, the current density of the target area M can be reduced, and the risk of heat accumulation in the target area M and damage to the light-emitting device can be reduced.

[0145] For example, Fig.12 As shown, the first sub-portion 311 is entirely in contact with the second extension section 22, and the second sub-portion 312 is entirely in contact with the first extension section 21. Of course, in some other examples, part of the first sub-portion 311 may be in contact with the second extension section 22, and part of it may be in contact with the first extension section 21; and the second sub-portion 312 may be entirely in contact with the first extension section 21 (not shown in the figure). Alternatively, the first sub-portion 311 may be entirely in contact with the second extension section 22, part of the second sub-portion 312 may be in contact with the first extension section 21, and another part of it may be in contact with the second extension section 22 (not shown in the figure).

[0146] In some embodiments, Fig.12As shown, the display panel 1100 includes a plurality of second power auxiliary lines 502, and 2 to 7 (including 2 and 7) second connection lines 132 are arranged between two adjacent second power auxiliary lines 502. The arrangement can be flexibly performed according to the number of the second power auxiliary lines 502 and the first data lines DL1. For example, 2, 3, 4, 5, 6 or 7 second connection lines 132 can be arranged between two adjacent second power auxiliary lines 502. For example, Fig.12 As shown, three second connection lines 132 may be provided between two adjacent second power auxiliary lines 502. Fig.12 It is a structural diagram when the display panel includes a second power auxiliary line and the contact portion is at least partially in contact with the first extension section.

[0147] In some embodiments, Fig.11 and Fig.12 As shown, the first sub-section 311 and the second sub-section 312 both extend along the second direction Y, and the first end of the first sub-section 311 (the end close to the display area AA) and the first end of the second sub-section 312 (the end close to the display area AA) are both connected to the first power bus VSS2 (the second sub-line VSS22). The first power fan-out line VSS3 also includes a binding portion 32, which extends along the first direction X, and the two ends of the binding portion 32 along the first direction X are respectively connected to the second end of the first sub-section 311 (the end away from the display area AA) and the second end of the second sub-section 312 (the end away from the display area AA), connecting the first sub-section 311 and the second sub-section 312 as a whole. Exemplarily, the binding portion 32 is configured to be bound and connected to the flexible circuit board, and is electrically connected to the driving circuit board through the flexible circuit board.

[0148] For example, Fig.11 As shown, the two ends of the binding portion 32 along the first direction X can be flush with the first side wall 313 of the first sub-portion 311 and the second side wall 314 of the second sub-portion 312 respectively; or Fig.12 As shown, one end of the binding portion 32 along the first direction X is flush with the first side wall 313 of the first sub-portion 311, and the other end extends out of the second side wall 314 of the second sub-portion 312; or, one end of the binding portion 32 along the first direction X extends out of the first side wall 313 of the first sub-portion 311, and the other end is flush with the second side wall 314 of the second sub-portion 312 (not shown in the figure).

[0149] See also Fig.13In some embodiments, the dimension D2 of the second sub-portion 312 along the first direction X is greater than the dimension D1 of the first sub-portion 311 along the first direction X. The cathode layer of the display panel 1100 is directly electrically connected to the cathode power line VSS1, and the current transmitted by the cathode layer is mainly concentrated on the cathode power line VSS1, or in other words, the current on the cathode power line VSS1 is greater than the current on the auxiliary power line 50. And the current on the cathode power line VSS1 converges from the side away from the fan-out area BB1 to the side close to the fan-out area BB1. Based on this, and because the second sub-portion 312 is closer to the cathode power lines VSS1 on both sides of the display area AA along the first direction X than the first sub-portion 311, the current on the second sub-portion 312 is greater than the current on the first sub-portion 311. The dimension D2 of the second sub-section 312 along the first direction X is greater than the dimension D1 of the first sub-section 311 along the first direction X, which can increase the area of ​​the second sub-section 312, thereby reducing the current density on the second sub-section 312, balancing the current density on the second sub-section 312 and the first sub-section 311, and reducing the risk of heat accumulation and temperature rise in the second sub-section 312. Fig.13 This is a structural diagram of the display panel when the width of the second sub-portion is greater than the width of the first sub-portion.

[0150] It is understandable that the embodiments of the present disclosure, such as Fig.13 As shown, the dimension D2 of the second sub-section 312 along the first direction X is greater than the dimension D1 of the first sub-section 311 along the first direction X, which can be implemented independently of other embodiments, or can be implemented in combination with any one or more of the above embodiments. That is, when the dimension D2 of the second sub-section 312 along the first direction X is greater than the dimension D1 of the first sub-section 311 along the first direction X, the connection positions between the first sub-section 311 and the second sub-section 312 and the first power bus VSS2 can be arbitrarily set as needed.

[0151] For example, Fig.13 As shown, the first sub-portion 311 and the second sub-portion 312 may both be in contact with and connected to the second extension section 22 of the first power bus VSS2 .

[0152] like Fig.14 As shown, in some embodiments, the dimension D2 of the second sub-portion 312 along the first direction X is greater than the dimension D1 of the first sub-portion 311 along the first direction X, so as to reduce the current density on the second sub-portion 312 and balance the current density on the second sub-portion 312 and the first sub-portion 311. In addition, a portion of the second sub-portion 312 is in contact with and connected to the first extension segment 21, another portion is in contact with and connected to the second extension segment 22, and the entire first sub-portion 311 is in contact with and connected to the second extension segment 22, so as to reduce the current density at the target area M, reduce the risk of heat accumulation in the target area M and damage to the light-emitting device. Fig.14This is a structural diagram of the display panel when part of the second sub-section is in contact with the first extension section.

[0153] like Fig.15 As shown, in other embodiments, the dimension D2 of the second sub-section 312 along the first direction X is greater than the dimension D1 of the first sub-section 311 along the first direction X, so as to reduce the current density on the second sub-section 312 and balance the current density on the second sub-section 312 and the first sub-section 311. The entire second sub-section 312 is in contact with the first extension section 21, and the first sub-section 311 is in contact with the second extension section 22. Based on this, the current density at the target area M can be further reduced, and the risk of heat accumulation in the target area M and damage to the light-emitting device can be reduced. Among them, Fig.15 This is a structural diagram of the display panel when the second sub-portion is in contact and connection with the first extension section, and the first sub-portion is in contact and connection with the second extension section.

[0154] like Fig.16 As shown, in some other embodiments, the dimension D2 of the second sub-section 312 along the first direction X is greater than the dimension D1 of the first sub-section 311 along the first direction X, so as to reduce the current density on the second sub-section 312 and balance the current density on the second sub-section 312 and the first sub-section 311. The first sub-section 311 and the second sub-section 312 are all in contact with the first extension section 21, which can greatly reduce the current density of the target area M and reduce the risk of heat accumulation in the target area M and damage to the light-emitting device. Fig.16 This is a structural diagram of the display panel when the first sub-portion and the second sub-portion are both in contact with and connected to the first extension section.

[0155] like Fig.17 As shown, in some other embodiments, the dimension D2 of the second subsection 312 along the first direction X is greater than the dimension D1 of the first subsection 311 along the first direction X, so as to reduce the current density on the second subsection 312 and balance the current density on the second subsection 312 and the first subsection 311. The multiple power auxiliary lines 50 include a second power auxiliary line 502, and the first subsection 311 and the second subsection 312 can all be in contact with and connected to the second extension section 21. Based on this, not only can the wiring space of the fan-out area BB1 be increased, which is beneficial to the routing design of the signal line of the gate drive circuit, but also the current density of the target area M can be reduced, reducing the risk of heat accumulation in the target area M and damage to the light-emitting device. Among them, Fig.17 This is a structural diagram of the display panel when the width of the second sub-portion is greater than that of the first sub-portion, and both the first sub-portion and the second sub-portion are in contact with and connected to the second extending section.

[0156] like Fig.18As shown, in some other embodiments, the dimension D2 of the second sub-portion 312 along the first direction X is greater than the dimension D1 of the first sub-portion 311 along the first direction X, so as to reduce the current density on the second sub-portion 312 and balance the current density on the second sub-portion 312 and the first sub-portion 311. The multiple power auxiliary lines 50 include a second power auxiliary line 502, and at least a portion of the first sub-portion 311 is in contact with and connected to the second extension section 22, and at least a portion of the second sub-portion 312 is in contact with and connected to the first extension section 21. Based on this, the wiring space of the fan-out area BB1 can be increased, which is beneficial to the routing design of the signal line of the gate drive circuit, and can further reduce the current density of the target area M, and reduce the risk of heat accumulation in the target area M and damage to the light-emitting device. Among them, Fig.18 This is a structural diagram of the display panel when the width of the second sub-portion is greater than that of the first sub-portion, the second sub-portion is in contact with and connected to the first extension section, and the first sub-portion is in contact with and connected to the second extension section.

[0157] In some embodiments, the size of the first sub-section 311 along the first direction is D1. The size of the second sub-section 312 along the first direction is D2. D1 and D2 satisfy: D2 = (1.2 ~ 4) * D1. That is, along the first direction X, the size of the second sub-section 312 is 1.2 times to 4 times the size of the first sub-section 311. Exemplarily, D2 = 1.2D1, D2 = 2D1, D2 = 3.5D1 or D2 = 4D1, which will not be listed one by one in the embodiments of the present disclosure.

[0158] In some embodiments, see Fig.19 , the first power auxiliary line 501 includes a third extension section 41 and a fourth extension section 42. The third extension section 41 is connected to the first power bus VSS2. The fourth extension section 42 is located on the side of the third extension section 41 away from the fan-out area BB1, and is connected to the third extension section 41. Among them, the dimension D3 of the third extension section 41 along the first direction X is greater than the dimension D4 of the fourth extension section 42 along the first direction X. It is beneficial for the current to be transmitted from the first power auxiliary line 501 to the first power bus VSS2, and can reduce the current density at the connection position between the first power auxiliary line 501 and the first power bus VSS2, reduce the risk of connection failure (such as breakage) at the connection between the first power auxiliary line 501 and the first power bus VSS2, and improve the connection reliability between the first power auxiliary line 501 and the first power bus VSS2. Among them, Fig.19 is a partially enlarged view of a first power auxiliary line according to some embodiments.

[0159] It is understandable that other power auxiliary lines 50 (such as the second power auxiliary line 502 and the third power auxiliary line 503) can be as follows. Fig.19The structure shown, that is, other auxiliary power lines 50 may also include a third extension section 41 and a fourth extension section 42 , so that the connection reliability between all auxiliary power lines 50 and the first power bus VSS2 can be improved.

[0160] In some embodiments, the size of the third extension segment 41 along the first direction X is D3; the size of the fourth extension segment 42 along the first direction X is D4; D3 and D4 satisfy: D3 = (2-5) * D4. That is, along the first direction X, the size of the third extension segment 41 is 2 to 5 times the size of the fourth extension segment 42. Exemplarily, the size of the third extension segment 41 is 2 times, 2.5 times, 4 times, 5 times, etc., the size of the fourth extension segment 42.

[0161] In some embodiments, Fig.18 As shown, the multiple power auxiliary lines 50 also include multiple third power auxiliary lines 503, and the multiple third power auxiliary lines 503 are located on the side of the edge area AA1 of the first area 101 away from the display area AA along the first direction X, or in other words, the multiple third power auxiliary lines 503 are closer to the center area AA2 of the display area AA along the first direction X than the first area 101.

[0162] like Fig.18 As shown, the display panel 1100 may further include a second power bus VDD1 and a second power fan-out line VDD2. The second power bus VDD1 extends along the first direction X and is closer to the display area AA than the second power fan-out line VDD2. The second power bus VDD1 is configured to be electrically connected to the pixel circuit in the display area AA and transmit a second voltage signal to the pixel circuit. The second power fan-out line VDD2 is configured to lead the second power bus VDD1 to the fan-out area so as to be bound and connected to the flexible circuit board, and electrically connected to the driving circuit board through the flexible circuit board.

[0163] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be thought of by any person skilled in the art within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A display panel, characterized in that: The display panel has a display area and a fan-out area, wherein the fan-out area is adjacent to a side edge of the display area, and the display panel comprises: a plurality of data lines, the plurality of data lines are arranged at intervals along a first direction, and the plurality of data lines all extend along a second direction, the second direction intersecting the first direction; the plurality of data lines include a plurality of first data lines and a plurality of second data lines, the plurality of first data lines are located at two edge areas of the display area along the first direction, and the plurality of second data lines are located at a central area of ​​the display area along the first direction; A plurality of first connection lines, each of which extends along the first direction; a first end of a first connection line is connected to a first data line, and a second end thereof extends to a central area of ​​the display area along the first direction; a plurality of second connection lines, wherein the plurality of second connection lines all extend along the second direction; a first end of a second connection line is connected to a second end of a first connection line, and the second end extends to an edge of the display area close to the fan-out area; a plurality of first power auxiliary lines, located on a side of the plurality of second connection lines close to the plurality of first data lines, the plurality of first power auxiliary lines being arranged at intervals along the first direction, and the plurality of first power auxiliary lines all extending along the second direction; A first power bus extending along the first direction and connected to the plurality of first power auxiliary lines; a first power fan-out line, located at a side of the first power bus away from the display area, the first power fan-out line comprising a contact portion, the contact portion being in contact with and connected to the first power bus, and the contact portion comprising a first side wall, the first side wall being close to an edge area of ​​the display area along the first direction; Wherein, the first power auxiliary line includes at least one current sink point connected to the first power bus; along the first direction, at least one of the current sink points is closer to the center area of ​​the display area along the first direction than the first side wall.

2. The display panel according to claim 1, characterized in that: The first power auxiliary line includes a current sink point connected to the first power bus, and one end of the first power auxiliary line close to the fan-out area is electrically connected to the first power bus to form the current sink point; The first power bus comprises a first extension section and a second extension section, along the second direction, the first extension section is arranged opposite to the area where the plurality of first power auxiliary lines are located, and the second extension section is arranged opposite to the area where at least part of the plurality of second connection lines are located; At least a portion of the contact portion is in contact with and connected to the first extension section.

3. The display panel according to claim 2, characterized in that: The contact portion comprises: a first sub-portion, the first sub-portion being in contact with and connected to the second extension section and spaced apart from the first extension section; The second sub-section is arranged at intervals with the first sub-section along the first direction and is located on a side of the first sub-section away from the central area of ​​the display area along the first direction, a part of the second sub-section is in contact with and connected to the first extension segment, and another part is in contact with and connected to the second extension segment.

4. The display panel according to claim 2, characterized in that: The contact portion comprises: a first sub-portion, the first sub-portion being in contact with and connected to the second extension section and spaced apart from the first extension section; The second sub-portion is spaced apart from the first sub-portion along the first direction and is located on a side of the first sub-portion away from a central area of ​​the display area along the first direction, and the second sub-portion is in contact with and connected to the first extension segment.

5. The display panel according to claim 4, characterized in that: The second sub-portion is close to the side wall of the first sub-portion and is flush with the first reference line, or is located on the side of the first reference line away from the second sub-portion; wherein the first reference line coincides with one of the multiple first power auxiliary lines that is closest to the central area of ​​the display area along the first direction.

6. The display panel according to claim 2, characterized in that: The contact portion comprises: a first sub-section, a portion of which is in contact with and connected to the first extension section, and another portion of which is in contact with and connected to the second extension section; The second sub-portion is spaced apart from the first sub-portion along the first direction and is located on a side of the first sub-portion away from a central area of ​​the display area along the first direction, and the second sub-portion is in contact with and connected to the first extension segment.

7. The display panel according to claim 2, characterized in that: The contact portion comprises: a first sub-portion, the first sub-portion being in contact and connected with the first extension section; The second sub-portion is spaced apart from the first sub-portion along the first direction and is located on a side of the first sub-portion away from a central area of ​​the display area along the first direction, and the second sub-portion is in contact with and connected to the first extension segment.

8. The display panel according to claim 7, characterized in that: The first sub-portion is close to the side wall of the central area of ​​the display area along the first direction and is flush with the first reference line, or is located on the side of the first reference line away from the central area of ​​the display area along the first direction; wherein the first reference line coincides with one of the multiple first power auxiliary lines that is closest to the central area of ​​the display area along the first direction.

9. The display panel according to claim 1, characterized in that: The display panel further includes: at least one second power auxiliary line extending along the second direction, the second power auxiliary line being located between two adjacent second connection lines, and one end of the second power auxiliary line close to the fan-out area being connected to the first power bus; at least one third connection line, the third connection line extending along the first direction, one end of the third connection line connected to the first power auxiliary line, and the other end of the third connection line connected to the second power auxiliary line; Among them, one end of the first power auxiliary line close to the fan-out area is connected to the first power bus to form a current sink point, and at least one of the first power auxiliary lines is connected to the first power bus in sequence through the third connecting line and the second power auxiliary line to form a current sink point.

10. The display panel according to claim 9, characterized in that: The first power bus comprises a first extension section and a second extension section, along the second direction, the first extension section is arranged opposite to the region where the plurality of first power auxiliary lines are located, and the second extension section is arranged opposite to the region where the at least one second power auxiliary line and at least part of the plurality of second connection lines are located; At least a portion of the contact portion is connected to the second extending section.

11. The display panel according to claim 10, characterized in that: The contact portion is in contact with and connected to the second extension segment, and along the first direction, the first side wall is closer to the center area of ​​the display area along the first direction than the plurality of first power auxiliary lines; The contact portion also includes a second side wall, which is close to the central area of ​​the display area along the first direction; the second side wall is flush with the second power auxiliary line closest to the central area of ​​the display area along the first direction, or the second side wall is closer to the first side wall than the second power auxiliary line closest to the central area of ​​the display area along the first direction.

12. The display panel according to claim 10, characterized in that: The contact portion comprises: a first sub-portion, at least a portion of which is in contact and connected with the second extension section; The second sub-portion is spaced apart from the first sub-portion along the first direction and is located on a side of the first sub-portion away from a central area of ​​the display area along the first direction, and at least a portion of the second sub-portion is in contact with and connected to the first extension segment.

13. The display panel according to any one of claims 9 to 12, characterized in that: The display panel includes a plurality of the second power auxiliary lines, and 2 to 7 second connection lines are arranged between two adjacent second power auxiliary lines.

14. The display panel according to any one of claims 3 to 8 or 10 to 12, characterized in that: The first sub-section and the second sub-section both extend along the second direction, and the first end of the first sub-section and the first end of the second sub-section are both connected to the first power bus; The first power fan-out line further includes a binding portion extending along the first direction, and two ends of the binding portion are respectively connected to the second end of the first sub-portion and the second end of the second sub-portion.

15. The display panel according to claim 14, characterized in that: A size of the second sub-portion along the first direction is greater than a size of the first sub-portion along the first direction.

16. The display panel according to claim 15, characterized in that: The dimension of the first sub-portion along the first direction is D1; The dimension of the second sub-portion along the first direction is D2; D1 and D2 satisfy: D2 = (1.2 ~ 4) * D1.

17. The display panel according to any one of claims 1 to 12, characterized in that: The first power auxiliary line comprises: a third extension section connected to the first power bus; a fourth extension segment, located at a side of the third extension segment away from the fan-out region and connected to the third extension segment; Wherein, a dimension of the third extension segment along the first direction is greater than a dimension of the fourth extension segment along the first direction.

18. The display panel according to claim 17, characterized in that: The dimension of the third extension section along the first direction is D3; The dimension of the fourth extension section along the first direction is D4; D3 and D4 satisfy: D3=(2~5)*D4.

19. The display panel according to any one of claims 1 to 12, characterized in that: The first power bus includes: A first sub-line extending along the fan-out area close to a boundary of the display area and electrically connected to the plurality of first power auxiliary lines; Two second sub-lines are at least partially located on a side of the first sub-line away from the display area and are electrically connected to the first sub-line; the two second sub-lines are spaced apart along the first direction, and the two second sub-lines are respectively located at two edge areas of the fan-out area along the first direction; the second sub-line is electrically connected to the first power fan-out line.

20. A display device, characterized in that: include: The display panel according to any one of claims 1 to 19; The driving circuit board is configured to transmit a control signal to the display panel.

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