Display panel and display apparatus

Abstract

A display panel. The display panel comprises first data lines, second data lines, first connecting lines, second connecting lines, first power supply auxiliary lines, a first power supply bus and a first power supply fan-out line, the first data lines being located in an edge area of a display area, the second data lines being located in a central area of the display area, a first end of each of the first connecting lines being connected to a first data line and a second end thereof extending to the central area of the display area, a first end of each of the second connecting lines being connected to the second end of a first connecting line and the second end thereof extending to the edge of the display area close to a fan-out area, the first power supply bus being connected to the plurality of first power supply auxiliary lines, the first power supply fan-out line comprising a contact part, the contact part being contactingly connected to the first power supply bus, the contact part comprising a first side wall, each first power supply auxiliary line comprising at least one current convergence point connected to the first power supply bus, and in a first direction, the at least one current convergence point being closer to the central area of the display area than the first side wall.

Description

Display panel and display device

[0001] This application claims priority to Chinese patent application No. 202311285152.6, filed on September 28, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0003] Organic Light-Emitting Diode (OLED) displays have gradually become a mainstream product in the display industry due to their superior performance, including self-luminescence, lack of a backlight, high contrast, thinness, wide viewing angle, fast response time, flexibility, wide operating temperature range, and simple structure and manufacturing process. OLED display panels are widely used in end products such as smartphones, tablets, TVs, and wearable devices (such as watches). High pixel density (PPI) and narrow bezels are currently key development trends for OLED displays.

[0004] Summary of the Invention

[0005] In one aspect, a display panel is provided. The display panel comprises a display area and a fan-out area, wherein the fan-out area is adjacent to a side edge of the display area. The display panel includes a plurality of data lines, a plurality of first connecting lines, a plurality of second connecting 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 spaced apart along a first direction and extend along a second direction, which intersects 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 center area of ​​the display area along the first direction. The plurality of first connecting lines extend along the first direction; a first end of a first connecting 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 connecting lines extend along the second direction. A first end of a second connecting line is connected to a second end of a first connecting line, and a second end extends to an edge of the display area near the fan-out area. The multiple first power auxiliary lines are located on a side of the multiple second connection lines close to the multiple first data lines, the multiple first power auxiliary lines are arranged at intervals along the first direction, and the multiple first power auxiliary lines all extend along the second direction. The first power bus extends along the first direction and is connected to the multiple 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 the 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 the center area of ​​the display area along the first direction than the first side wall.

[0006] In some embodiments, the first auxiliary power line includes a current sink point connected to the first power bus, and one end of the first auxiliary power line near 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 segment and a second extension segment. Along the second direction, the first extension segment is disposed opposite the region where the plurality of first auxiliary power lines are located, and the second extension segment is disposed opposite the region where at least some 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 segment.

[0007] 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 is spaced apart from the first sub-portion 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 is in contact with and connected to the second extension segment.

[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 is spaced apart from the first sub-portion along the first direction, and the second sub-portion is located on a side of the first sub-portion away from a center area of ​​the display area along the first direction, and is in contact with and connected to the first extension segment.

[0009] In some embodiments, a side wall of the second subsection adjacent to the first subsection is flush with a first reference line, or a side wall of the second subsection adjacent to the first subsection is located on a side of the first reference line away from the second subsection. The first reference line coincides with one of the plurality of first auxiliary power lines that is closest to a center region of the display area along the first direction.

[0010] 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 is spaced apart from the first sub-portion 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.

[0011] 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 is spaced apart from the first sub-portion 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 first sub-portion is located near a sidewall of a central region of the display area along the first direction and is flush with a first reference line, or is located on a side of the first reference line away from the central region of the display area along the first direction. The first reference line coincides with one of the plurality of first auxiliary power lines that is closest to the central region of the display area along the first direction.

[0013] 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 the second power auxiliary line is connected to the first power bus at one end close to the fan-out area. The third connection line extends along the first direction, and one end of the third connection line is connected to the first power auxiliary line, and the other end is connected to one of the second power auxiliary lines. The 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 connection line and the second power auxiliary line to form a current sink point.

[0014] In some embodiments, the first power bus includes a first extending section and a second extending section. Along the second direction, the first extending section is disposed opposite an area where the plurality of first auxiliary power lines are located, and the second extending section is disposed opposite an area where the at least one second auxiliary power line and at least a portion of the plurality of second connection lines are located. The contact portion is at least partially connected to the second extending section.

[0015] In some embodiments, the contact portion is in contact with and connected to the second extension segment. Along the first direction, the first sidewall is closer to the center of the display area along the first direction than the plurality of first auxiliary power lines. The contact portion further includes a second sidewall, the second sidewall being closer to the center of the display area along the first direction. The second sidewall is flush with the second auxiliary power line closest to the center of the display area along the first direction, or the second sidewall is closer to the first sidewall than the second auxiliary power line closest to the center of the display area along the first direction.

[0016] 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 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.

[0017] In some embodiments, the display panel includes a plurality of second power auxiliary lines, and 2 to 7 second connection lines are provided between two adjacent second power auxiliary lines.

[0018] In some embodiments, the first subsection and the second subsection both extend along the second direction, and the first end of the first subsection and the first end of the second subsection are both connected to the first power bus. The first power fan-out line further includes a binding portion, the binding portion extending along the first direction and having two ends connected to the second end of the first subsection and the second end of the second subsection, respectively.

[0019] In some embodiments, a dimension of the second subsection along the first direction is greater than a dimension of the first subsection along the first direction.

[0020] In some embodiments, the size of the first sub-section along the first direction is D1, and the size of the second sub-section along the first direction is D2, wherein D1 and D2 satisfy: D2 = (1.2-4) * D1.

[0021] In some embodiments, the first auxiliary power 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.

[0022] 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.

[0023] In some embodiments, the first power bus includes a first sub-line and two second sub-lines. The first sub-line extends along the fan-out area near the boundary of the display area and is electrically connected to the plurality of first power auxiliary lines. At least portions of the two second sub-lines are located on a side of the first sub-line away from the display area, and both second sub-lines are electrically connected to the first sub-line. The two second sub-lines are spaced apart along the first direction and are respectively located at two edge regions of the fan-out area along the first direction. The second sub-lines are electrically connected to the first power fan-out line.

[0024] In another aspect, a display device is provided. The display device includes a driving circuit board and a display panel according to any one of the above embodiments. The driving circuit board is configured to transmit a control signal to the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the technical solutions of the present disclosure, the following briefly introduces the drawings required for use in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure, and those skilled in the art can also derive other drawings based on these drawings. Furthermore, the drawings described below are schematic diagrams and are not intended to limit the actual dimensions of the products, actual processes of the methods, actual timing of signals, and the like involved in the embodiments of the present disclosure.

[0026] FIG1 is a structural diagram of a display device according to some embodiments;

[0027] FIG2 is another structural diagram of a display device according to some embodiments;

[0028] FIG3 is a cross-sectional structural diagram of a display panel according to some embodiments;

[0029] FIG4 is a planar structural diagram of a display panel according to some embodiments;

[0030] FIG5 is a partial enlarged view of area A in FIG4 ;

[0031] FIG6 is a structural diagram of a display panel according to some embodiments;

[0032] FIG7 is another structural diagram of a display panel according to some embodiments;

[0033] FIG8 is another structural diagram of a display panel according to some embodiments;

[0034] FIG9 is another structural diagram of a display panel according to some embodiments;

[0035] FIG10 is another structural diagram of a display panel according to some embodiments;

[0036] FIG11 is another structural diagram of a display panel according to some embodiments;

[0037] FIG12 is another structural diagram of a display panel according to some embodiments;

[0038] FIG13 is another structural diagram of a display panel according to some embodiments;

[0039] FIG14 is another structural diagram of a display panel according to some embodiments;

[0040] FIG15 is another structural diagram of a display panel according to some embodiments;

[0041] FIG16 is another structural diagram of a display panel according to some embodiments;

[0042] FIG17 is another structural diagram of a display panel according to some embodiments;

[0043] FIG18 is another structural diagram of a display panel according to some embodiments;

[0044] FIG. 19 is a partially enlarged view of a first power auxiliary line of a display panel according to some embodiments. DETAILED DESCRIPTION

[0045] 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 embodiments described are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0046] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open and 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" are intended to indicate that the particular 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 particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0047] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, 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.

[0048] When describing some embodiments, the word "connected" and its derivatives may be used. The term "connected" should be understood in a broad sense. For example, "connected" can mean fixed connection, detachable connection, or integration; it can be directly connected or indirectly connected through an intermediate medium.

[0049] “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.

[0050] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0051] 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 [stated condition or event] is detected" are optionally interpreted to mean "upon determining" or "in response to determining" or "upon detecting [stated condition or event]" or "in response to detecting [stated condition or event]," depending on the context.

[0052] The use of "adapted to" or "configured to" herein is intended to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0053] 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.

[0054] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of deviation 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).

[0055] 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 an acceptable deviation range, wherein the acceptable deviation range is as 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 the specific 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 can be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity can also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality can be, for example, that the difference between the two equals is less than or equal to 5% of either one.

[0056] It will be understood that when a layer or 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 therebetween.

[0057] Exemplary embodiments are described herein with reference to cross-sectional and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of layers and the area of ​​regions are exaggerated for clarity. Therefore, variations in shape relative to the drawings due to, for example, manufacturing techniques and / or tolerances are contemplated. Therefore, the exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include deviations in shape 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 shape of regions of the device and are not intended to limit the scope of the exemplary embodiments.

[0058] FIG. 1 is a structural diagram of a display device according to some embodiments.

[0059] 1 , an embodiment of the present disclosure provides a display device 1000 , which is a product having an image display function. For example, the display device 1000 can be any device that displays either moving (e.g., video) or fixed (e.g., still images), and whether text or images.

[0060] For example, the display device 1000 may be a television, a laptop computer, a tablet computer, a personal digital assistant (PDA), a mobile phone, a watch, a clock, a calculator, a GPS receiver / navigator, a camera, a camera view display (e.g., a rearview camera display in a vehicle), a wearable device, an augmented reality (AR) device, a virtual reality (VR) device, an in-vehicle display, an aircraft display, or any other product or component with a display function. For example, as shown in FIG1 , the display device 1000 may be a mobile phone.

[0061] From the perspective of the light-emitting type of the display device 1000, the above-mentioned display device 1000 may be an organic light-emitting diode display device, a quantum dot electroluminescent display device (Quantum Dot Light Emitting Diodes; abbreviated as: QLED) or a micro light-emitting diode (Mini / Micro Light Emitting Display; abbreviated as: MLED), etc. From the perspective of the form of the display device 1000, the above-mentioned 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 above-mentioned display device 1000 may be rectangular or circular, etc. The embodiments of the present disclosure do not specifically limit this. The following takes an organic light-emitting diode display device with a rectangular and flat display device as an example 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 devices can also be considered as long as the same technical ideas are applied.

[0062] FIG2 is a structural diagram of a display device according to yet other embodiments.

[0063] 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.

[0064] 2 , the display panel 1100 has a display area AA and a peripheral area BB. The peripheral area BB is located at least on one side of the display area AA. Exemplarily, the peripheral area BB is disposed around the display area AA.

[0065] 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.

[0066] The 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 disposed on the display side, that is, the display panel adopts a COE (CF on Encapsulation) structure. Alternatively, the multiple sub-pixels P can emit light of different colors. For example, the multiple sub-pixels P include a red sub-pixel emitting red light, a green sub-pixel emitting green light, and a blue sub-pixel emitting blue light.

[0067] The plurality of sub-pixels P are arranged in a plurality of rows and columns, each row including a plurality of sub-pixels P arranged along a first direction X, and the plurality of rows of sub-pixels P are arranged along a second direction Y. Each column including a plurality of sub-pixels P arranged along the second direction Y, and the 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.

[0068] 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 (TFTs) and at least one capacitor Cst. Exemplarily, the pixel circuit 100 may be a "3T1C" circuit, a "7T1C" circuit, 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 concept is applied. Wherein, "T" refers to TFT, and the number before "T" refers to the number of TFTs; "C" refers to capacitor Cst, and the number before "C" refers to the number of capacitors Cst.

[0069] As shown in FIG2 , the display panel 1100 further includes a plurality of data lines DL, which are arranged at intervals along a first direction X and extend along a second direction Y. Each data line DL can be electrically connected to a column of pixel circuits 100 in a column of sub-pixels P and is configured to transmit data signals to the column of pixel circuits 100 connected to the data line DL.

[0070] 2 , the peripheral area BB can be used, for example, to set up a gate drive circuit (Gate on Array; GOA) 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 these, and the undisclosed embodiments will not be described in detail.

[0071] 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 fan-out area BB1 is close to the side edge of the display area AA and 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 lines of the peripheral area and bind them to the driver circuit board or driver chip. For example, the fan-out area BB1 is adjacent to the lower edge of the display area AA.

[0072] FIG. 3 is a cross-sectional structural diagram of a display panel according to some embodiments.

[0073] Referring to FIG3 , 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 a side of the encapsulation layer 300 away from the array substrate 400. The functional stack may include, for example, one or more of a touch function layer, an anti-reflection layer, a hardening layer, a color filter layer (the display panel adopts a COE structure), and an anti-fingerprint layer, so that the display panel can achieve corresponding functions. The embodiments of the present disclosure do not specifically limit the type and quantity of the above-mentioned functional stacks.

[0074] The array substrate 400 includes a substrate 410. The substrate 410 can be a rigid substrate, such as glass. Alternatively, the substrate 410 can be a flexible substrate, such as polyimide (PI), polycarbonate (PC), or polyvinyl chloride (PVC).

[0075] 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.

[0076] 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 electrode 403 and a drain electrode 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.

[0077] The light-emitting device 200 includes a stacked anode 201, a light-emitting functional layer 202, and a cathode layer 203. The cathode layers 203 of multiple light-emitting devices 200 are interconnected to form a continuous, integrated structure. The display panel 1100 may further include a pixel definition layer (PDL) disposed on a side of the anode 201 away from the array substrate 400. The pixel definition layer (PDL) includes multiple openings, with at least a portion of each light-emitting functional layer 202 located within one of the openings.

[0078] The encapsulation layer 300 is configured to reduce the risk of moisture and oxygen from the external environment entering the light-emitting device 200, thereby increasing the service life of the display panel 1100. The encapsulation layer 300 can be an encapsulation film or an encapsulation substrate. For example, as shown in FIG3 , the encapsulation layer 300 can be an encapsulation film. In this case, the encapsulation layer 300 can include a first inorganic encapsulation layer 301, an organic encapsulation layer 302, and a second inorganic encapsulation layer 303, which are stacked in sequence.

[0079] FIG. 4 is a structural diagram of a display panel 1100 according to some embodiments.

[0080] 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. In other words, the plurality of first data lines DL1 are respectively provided on both sides of the plurality of second data lines DL2 along the first direction X.

[0081] Continuing to refer to FIG. 4 , the display panel 1100 further includes a plurality of first connection lines 131 and a plurality of second connection lines 132 .

[0082] A plurality of first connection lines 131 are arranged at intervals along the second direction Y, and each of the plurality of first connection lines 131 extends along the first direction X. The plurality of first connection lines 131 correspond one-to-one to the plurality of first data lines DL1. A first end of a first connection line 131 (the end near the edge region AA1 of the display area AA) is connected to a first data line DL1, and a second end (the end near the center region AA2 of the display area AA) extends to the center region AA2 of the display area AA along the first direction X. For example, the end of the first connection line 131 away from the first data line DL1 extends to a region of the center region AA2 near the edge region AA1.

[0083] The plurality of second connection lines 132 are arranged at intervals along the first direction X, and each of the plurality of second connection lines 132 extends 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.

[0084] Each first data line DL1 is connected to the central area AA2 of the display area AA along the first direction X via a first connection line 131 and a second connection line 132, and is led out from the edge of the central area AA2 near the fan-out area BB1. This arrangement of data lines DL is also known as fan-out in AA (FIAA) or fan-out in panel (FIP). This arrangement helps reduce the size of the fan-out area BB1 along the second direction Y, thereby reducing the bezel width of the display panel 1100 and facilitating a narrow bezel for the display device 1000.

[0085] 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 .

[0086] 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 will be understood that the first area 101 includes the area between 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. Thus, 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 central area AA2 of the display area AA in the first direction X.

[0087] Referring to Figures 4 and 5 simultaneously, in some embodiments, in addition to other areas where the second connection lines 132 are provided in the display area AA, multiple auxiliary power lines 50 are also provided. The multiple auxiliary power lines 50 are arranged in a spaced relationship along the first direction X, and the multiple auxiliary power lines 50 all extend along the second direction Y. The auxiliary power lines 50 are electrically connected to the cathode power line VSS1 of the peripheral area BB, and further electrically connected to the cathode layer, which can reduce the resistance of the cathode layer and thereby reduce the voltage drop across the cathode layer, thereby improving the display uniformity of the display area AA. The arrangement of the auxiliary power lines 50 described above is also known as SIP (VSS In Panel) technology. 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.

[0088] It is understood 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 solidity of the lines do not represent the width of the lines themselves or the continuity of the extension, but are only used to distinguish different signal lines. In other figures of the present disclosure, as specifically indicated in the figures, similar drawing methods are used for each signal line.

[0089] It is understood that the multiple data lines DL (multiple first data lines DL1 and multiple second data lines DL2), the multiple second connection lines 132, and the multiple auxiliary power supply lines 50 are all arranged at intervals along the first direction X and all extend along the second direction Y. Based on this, the multiple data lines DL and the multiple auxiliary power supply lines 50 can be provided in the same conductive layer. For example, the multiple data lines DL and the multiple auxiliary power supply lines 50 can be provided in the third source-drain conductive layer. The multiple first connection lines 131 are arranged at intervals along the second direction Y and all extend along the first direction X. To avoid cross-interference between the first connection lines 131 and the data lines DL, the multiple first connection lines 131 can be provided in the second source-drain conductive layer.

[0090] The plurality of auxiliary power lines 50 include a plurality of first auxiliary power lines 501. The plurality of first auxiliary power lines 501 are arranged at intervals along the first direction X and extend along the second direction Y. The plurality of first auxiliary power lines 501 are located on a side of the plurality of second connection lines 132 that is close to the first data line DL1. In other words, the plurality of first auxiliary power lines 501 are located on a side of the first area 101 that is away from the central area AA2 of the display area AA. In other words, the plurality of first auxiliary power lines 501 are located in the edge area AA1 of the display area AA along the first direction X.

[0091] As shown in FIG5 , the display panel 1100 further includes a first power bus VSS2. The first power bus VSS2 extends along a first direction X and is connected to the ends of the plurality of first auxiliary power lines 501 near the fan-out region BB1. The first power bus VSS2 is configured to electrically connect the plurality of first auxiliary power lines 501 and connect the plurality of first auxiliary power lines 501 to the fan-out region BB1, thereby facilitating the transmission of voltage signals to the plurality of first auxiliary power lines 501.

[0092] In some embodiments, as shown in FIG5 , the first power bus VSS2 includes a first sub-line VSS21 and two second sub-lines VSS22 (only one second sub-line VSS22 is shown in FIG5 ). The first sub-line VSS21 extends along the boundary of the fan-out area BB1 near the display area AA. In other words, the first sub-line VSS21 extends along the boundary between the fan-out area BB1 and the display area AA. The first sub-line VSS21 is electrically connected to the plurality of first auxiliary power lines 501.

[0093] At least portions of the two second sub-lines VSS22 are located on a side of the first sub-line VSS21 away from the display area AA and are electrically connected to the first sub-line VSS21. The two second sub-lines VSS22 are spaced apart along the first direction X and are respectively located at two edge regions of the fan-out area BB1 along the first direction X. The second sub-lines VSS22 are electrically connected to the first power fan-out line VSS3.

[0094] It can be understood that, as shown in Figure 4, the display panel 1100 can be arranged symmetrically about the center line along the first direction X. In this way, although only one second sub-line VSS22 is illustrated in Figure 5, it can be easily imagined that a second sub-line VSS22 is also included in the area symmetrical to area A in Figure 4.

[0095] For example, the first sub-line VSS21 and the second sub-line VSS22 can be located in different conductive layers to meet the wiring requirements of the display panel 1100. For example, the first sub-line VSS21 can be located in the third source-drain conductive layer, and the second sub-line VSS22 can be located in the first source-drain conductive layer. Of course, the embodiments of the present disclosure are not limited to this, as long as the same technical concept is adopted.

[0096] As shown in FIG5 , along the first direction X, the first power bus VSS2 may include a first extending section 21 and a second extending section 22. Along the second direction Y, the first extending section 21 is disposed opposite to a region where the plurality of first power auxiliary lines 501 are located, and the second extending section 22 is disposed opposite to a region where at least a portion of the second connection lines 132 (at least a portion of the plurality of second connection lines 132) are located.

[0097] It is 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, as well as 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 the first power auxiliary line 501 closest to the first area 101 and the 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 the first power auxiliary line 501 closest to the first area 101, and the other end is flush with the first power auxiliary line 501 farthest from the first area 101. Based on this, the position of the 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.

[0098] The region where at least some of the second connection lines 132 are located can be the region of the second connection lines 132 located near the first auxiliary power line 501. The region where the second connection lines 132 are located is similar to the region where the first auxiliary power lines 501 are located, and the embodiments of the present disclosure will not be further described. For example, one end of the second extension segment 22 extends along the first direction X 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.

[0099] It is understood that the first power bus VSS2 is continuous along the first direction X, with both ends extending beyond the boundaries of the display area AA. Based on this, the first power bus VSS2 may also include other extensions, such as an extension between the two second extensions, and a portion of the first extension away from the second extension, which are not listed here.

[0100] 5 , the display panel 1100 further includes a first power fan-out line VSS3. The first power fan-out line VSS3 is located on a side of the first power bus VSS2 away from the display area AA and is electrically connected to the first power bus VSS2. The first power fan-out line VSS3 is configured to connect the first power bus VSS2 to a side of the fan-out area BB1 away from the display area AA, thereby facilitating the transmission of a voltage signal to the first power fan-out line VSS3.

[0101] The first auxiliary power supply line 501 is electrically connected to the first power fan-out line VSS3 via the first sub-line VSS21 and the second sub-line VSS22. For example, 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.

[0102] In some embodiments, the first power fan-out line VSS3 is further configured to be connected to a DC / DC circuit of a power management chip of a driver circuit board (not shown in FIG. 5 ). For example, the first power fan-out line VSS3 is connected to the power management chip of the driver circuit board via a flexible printed circuit (FPC). In this way, the power management chip can be electrically connected to the auxiliary power line 50 and the cathode layer via the FPC, the first power fan-out line VSS3, the first power bus VSS2, and the cathode power line VSS1, and transmit a power signal to the cathode layer.

[0103] Research has 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 lines 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 along the first direction X on the first power bus VSS2 to the first power fan-out line VSS3. 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.

[0104] To address the aforementioned technical issues 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. As shown in FIG5 , the first power fan-out line VSS3 includes a contact portion 31 that contacts and connects to the first power bus VSS2. The contact portion 31 also includes a first sidewall 313 that is located near an edge area AA1 of the display area AA along the first direction X. In other words, the first sidewall 313 is a sidewall of the contact portion 31 that is located near the edge of the display area AA. 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, the at least one current sink point 11 is located closer to the center area AA2 of the display area AA along the first direction X than the first sidewall 313.

[0105] The contact portion 31 is the portion of the first power fan-out line VSS3 that connects to the first power bus VSS2. The sidewall of the contact portion 31, which is adjacent to the edge region AA1 of the display area AA along the first direction X, is a first sidewall 313. The location where the first auxiliary power line 501 is electrically connected to the first power bus VSS2 forms a current sink point 11. Current on the first auxiliary power line 501 can be transferred from this current sink point 11 to the first power bus VSS2.

[0106] At least one current converging 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. In the embodiment of the present disclosure, the current converging point 11 located on the first side wall 313 close to the center area AA2 of the display area AA along the first direction X is the first current converging point 111. In other words, at least a portion of the contact portion 31 is electrically connected to a side of the first current converging point 111 that is away from the center area AA2 of the display area AA along the first direction X.

[0107] The first current converging point 111 is closer to the central area AA2 of the display area AA along the first direction X than the first sidewall 313. The first current converging point 111 and the contact portion 31 may be arranged opposite to each other along the second direction Y, or the first current converging 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.

[0108] 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.

[0109] For example, when the first current sink 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 sink point 111 by the first power auxiliary line 501 to the first power bus VSS2 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 then transmitted to the first power fan-out line VSS3.

[0110] 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 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) to the contact portion 31, which can reduce the current magnitude at 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.

[0111] As shown in FIG. 5 , 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 .

[0112] In some embodiments, as shown in FIG5 , at least a portion of the contact portion 31 is in contact with the first extension 21. This allows at least a portion of the current in the first auxiliary power supply line 501 to be transmitted from the portion where the contact portion 31 is in contact with the first extension 21 to the contact portion 31, and then to the first power fan-out line VSS3. This reduces the current density in the target region M, alleviates heat accumulation in the target region M, and reduces the risk of failure of the light-emitting functional layer material of the light-emitting devices in the target region.

[0113] It is understood that in the embodiments of the present disclosure, "contact connection" means that the two are in direct contact and interconnected, wherein the two can be located in the same conductive layer or different conductive layers. In the case of the two being located in different conductive layers, the two can 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 and the first extension segment 21 are connected through a via.

[0114] For example, the contact portion 31 may be partially connected to the first extension section 21 and partially connected to the second extension section 22 (as shown in Figures 6 to 9). Alternatively, the contact portion 31 may be entirely connected to the first extension section 21 (as shown in Figures 5 and 10).

[0115] In some embodiments, referring to FIG. 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 is spaced apart from the first extension segment 21 by a distance D5. 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 (the left side in FIG. 6 ). A portion of the second sub-portion 312 is in contact with the first extension segment 21, while another portion is in contact with the second extension segment 22. In other words, the contact portion 31 is in contact with the first extension segment 21 only in a portion away from the central area AA2 of the display area AA. This helps increase the spacing between the first power fan-out line VSS3 and the edge of the display panel 1100 along the first direction X (i.e., increases the space to the left of the first power fan-out line VSS3), improves the wiring space in the fan-out area BB1, and facilitates the routing design of the signal lines of the gate drive circuit.

[0116] It will be appreciated that Figure 6 illustrates the structure of the display panel when a portion of the second subsection is in contact with the first extension, and the entire first subsection is in contact with the second extension. Furthermore, configuring the contact portion 31 as a first subsection 311 and a second subsection 312 spaced apart facilitates routing other traces between the first subsection 311 and the second subsection 312, such as signal lines for a touch-sensitive structure.

[0117] In other embodiments, referring to FIG. 7 , 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 and connected to the second extension segment 22 and is spaced apart from the first extension segment 21. 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 center area AA2 of the display area AA along the first direction X (the left side in FIG. 7 ). FIG. 7 illustrates the structure of the display panel when the second sub-portion is in contact with and connected to the first extension segment, and the first sub-portion is in contact with and connected to the second extension segment.

[0118] The second sub-portion 312 (the entire portion along the first direction X) is in contact with the first extension section 21. This ensures that the entire second sub-portion 312 is in contact with the first extension section 21, increasing the contact length between the contact portion 31 and the first extension section 21. This in turn increases the current directly transmitted to the second sub-portion 312 and reduces the current density in the target area M. Furthermore, the spacing 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, which helps increase the wiring space in the fan-out area BB1 on the side of the first power fan-out line VSS3 away from the central area AA2 of the display area AA, facilitating the routing design of the signal lines of the gate drive circuit.

[0119] For example, in some display panels with smaller wiring space, the first power fan-out line VSS3 structure design as shown in Figure 6 or Figure 7 can be adopted. This can take into account the wiring space of the first power fan-out line VSS3 away from the central area AA2 of the display area AA while reducing the current density of the target area M.

[0120] In some embodiments, as shown in FIG7 , a 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 lifted, and the current density of 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.

[0121] 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.

[0122] Of course, in other embodiments, referring to FIG8 , the sidewall of the second sub-section 312 proximal to the first sub-section 311 (the third sidewall 315) may also be located on the side of the first reference line L1 away from the second sub-section 312. This allows the current transmitted from the portion of the first auxiliary power line 501 proximal to the first region 101 to the first power bus VSS2 to be transmitted to the first sub-section 311 in a direction away from the first region 101, thereby reducing the current density in the target region M. FIG8 illustrates the structure of the display panel when the second sub-section is spaced apart from the first reference line.

[0123] In some embodiments, referring to 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 is located on a side of the first sub-portion 311 away from the center area AA2 of the display area AA along the first direction X. For example, a space is provided between the second sub-portion 312 and the first sub-portion 311. A portion of the first sub-portion 311 is in contact with the first extension segment 21, while another portion is in contact with the second extension segment 22. The second sub-portion 312 is in contact with 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, allowing more current on the multiple first power auxiliary lines 501 and the cathode power line VSS1 to be directly transmitted from the second sub-section 312 and the portion of the first sub-section 311 that contacts the first extension section 21 to the first power fan-out line VSS3, thereby reducing the current magnitude and, consequently, the current density in the target area M, thereby reducing the risk of heat accumulation and damage to the light-emitting devices in the target area M. FIG9 is a structural diagram of the display panel when the second sub-section is in contact with the first extension section, and a portion of the first sub-section is in contact with the second extension section.

[0124] In other embodiments, referring to 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 is located on a side of the first sub-portion 311 away from the center of the display area AA along the first direction X. For example, there is a gap between the second sub-portion 312 and the first sub-portion 311. Both the first sub-portion 311 and the second sub-portion 312 are in contact with the first extension 21. This significantly increases the connection length between the first power fan-out line VSS3 and the first extension 21 of the first power bus VSS2, significantly reducing the current transmitted from the first power auxiliary line 501 and the cathode power line VSS1 to the target area M, significantly lowering the current density in the target area M and reducing the risk of heat accumulation and damage to the light-emitting devices in the target area M. FIG. 10 illustrates the structure of a display panel in which all contact portions are in contact with the first extension and spaced apart from the first reference line.

[0125] For example, referring to FIG. 10 , a sidewall (second sidewall 314) of the first sub-portion 311 near the center region AA2 of the display area AA along the first direction X is located on a side of the first reference line L1 that is away from the center region AA2 of the display area AA along the first direction X. In this manner, current transmitted to the first power bus VSS2 by a portion of the first auxiliary power line 501 near the first region 101 can be transmitted to the first sub-portion 311 in a direction away from the first region 101, thereby reducing the current density in the target region M.

[0126] 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.

[0127] For example, referring to FIG. 5 , the sidewall of the first sub-portion 311 (hereinafter referred to as the second sidewall 314) located near the center region AA2 of the display area AA along the first direction X is flush with the first reference line L1. This increases the current directly transmitted from the first extension 21 to the second sub-portion 312, thereby reducing the current density in the target region M. Furthermore, it significantly increases the routing space for the first power fan-out line VSS3 located away from the center region AA2 of the display area AA.

[0128] For example, referring to Figures 5, 9 and 10, in some display panels with sufficient wiring space in the fan-out area BB1, for example, when the wiring space on the side of the first power fan-out line VSS3 away from the central area AA2 of the display area AA is large, the first power fan-out line VSS3 structure design as shown in Figures 5, 9 and 10 can be adopted. In this way, the current density of the target area M can be greatly reduced, 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.

[0129] Referring to FIG. 11 , in some embodiments, at least one first auxiliary power line 501 includes two current sinks 11 connected to the first power bus VSS2. In this case, the display panel 1100 also includes at least one second auxiliary power line 502 and at least one third connection line 133. FIG. 11 illustrates the structure of a display panel including a second auxiliary power line.

[0130] The second auxiliary power lines 502 extend along the second direction Y. Each second auxiliary power line 502 is located between two adjacent second connection lines 132. The ends of the second auxiliary power lines 502 proximal to the fan-out area BB1 are connected to the first power bus VSS2. In other words, the plurality of auxiliary power lines 50 also includes at least one second auxiliary power line 502, and the second auxiliary power line 502 is located in the first area 101.

[0131] One end of each first auxiliary power line 501 near the fan-out area BB1 is connected to the first power bus VSS2 to form a current sink point 11. Furthermore, at least one first auxiliary power line 501 is sequentially connected to the first power bus VSS2 via the third connection line 133 and the second auxiliary power line 502 to form a current sink point 11. In this way, the current in at least one first auxiliary power line 501 can be sequentially transmitted to the first power bus VSS2 via the third connection line 133 and the second auxiliary power line 502, thereby reducing the current flowing through the target area M and lowering the current density in the target area M.

[0132] 11 , 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 .

[0133] It can be understood that each auxiliary connection line 134 in 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.

[0134] 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 multiple auxiliary connection lines 134 and multiple first power auxiliary lines 501. Exemplarily, multiple auxiliary connection lines 134 can be set in the second source-drain conductive layer, and multiple first power auxiliary lines 501 can be set in the third source-drain conductive layer.

[0135] Continuing with FIG11 , in some embodiments, the first power bus VSS2 includes a first extending segment 21 and a second extending segment 22. Along the second direction Y, the first extending segment 21 is disposed opposite an area where the plurality of first auxiliary power lines 501 are located, and the second extending segment 22 is disposed opposite an area where (all) the second auxiliary power lines 502 and at least some of the plurality of second connecting lines 132 are located.

[0136] At least a portion of the contact portion 31 is connected to the second extension segment 22 , which helps increase the wiring space for the first power fan-out line VSS3 away from the side of the central area AA2 of the display area AA, thereby reducing the size of the fan-out area BB1 along the first direction X. For example, as shown in FIG11 , the contact portion 31 may be entirely connected to the second extension segment 22 , with a gap between the contact portion 31 (second sub-portion 312 ) and the first reference line L1 .

[0137] It is 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, as well as 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 the first power auxiliary line 501 closest to the first area 101 and the first power auxiliary line 501 farthest from the first area 101, and includes the area where these 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 the first power auxiliary line 501 closest to the first area 101, and the other end is flush with the first power auxiliary line 501 farthest from the first area 101.

[0138] 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.

[0139] Continuing with Figure 11 , in some embodiments, the entire contact portion 31 is in contact with the second extension 22. Along the first direction X, the first sidewall 313 of the contact portion 31 is closer to the center region AA2 of the display area AA along the first direction X than the plurality of first auxiliary power lines 501. In other words, the left edge of the contact portion 31 is located to the left of the first reference line L1. This significantly increases the routing space for the first fan-out power line VSS3 away from the center region AA2 of the display area AA.

[0140] The contact portion 31 also includes a second sidewall 314, which is located near the center area AA2 of the display area AA along the first direction X. In other words, the second sidewall 314 is the sidewall of the contact portion 31 that is located near the center of the display area AA. As shown in FIG11 , the second sidewall 314 is closer to the first sidewall 313 than the second auxiliary power supply line 502 (hereinafter referred to as the target second auxiliary power supply line 5021) that is closest to the center area AA2 of the display area AA along the first direction X. In other words, there is a gap between the second sidewall 314 and the target second auxiliary power supply line 5021 along the first direction X. Alternatively, the second sidewall 314 is flush with the second auxiliary power supply line 502 that is closest to the center area AA2 of the display area AA along the first direction X (not shown).

[0141] Exemplarily, as shown in FIG. 11 , the second sidewall 314 is flush with an edge of the second sub-line VSS22 close to the central area AA2 of the display area AA.

[0142] In other embodiments, referring to FIG. 12 , 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 center region AA2 of the display area AA along the first direction X (the left side in FIG. 12 ). At least a portion of the first sub-portion 311 is in contact with and connected to the second extension segment 22, and at least a portion of the second sub-portion 312 is in contact with and connected to the first extension segment 21. Based on this, the current flowing through the target area M can be further reduced, the current density in the target area M can be lowered, and the risk of heat accumulation in the target area M and damage to the light-emitting device can be reduced.

[0143] For example, as shown in FIG12 , the entire first subsection 311 is in contact with the second extension section 22, and the entire second subsection 312 is in contact with the first extension section 21. Of course, in other examples, a portion of the first subsection 311 may be in contact with the second extension section 22, and a portion may be in contact with the first extension section 21, while the entire second subsection 312 is in contact with the first extension section 21 (not shown). Alternatively, the entire first subsection 311 may be in contact with the second extension section 22, a portion of the second subsection 312 may be in contact with the first extension section 21, and another portion may be in contact with the second extension section 22 (not shown).

[0144] In some embodiments, as shown in FIG12 , 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 provided between two adjacent second power auxiliary lines 502 . This can be flexibly arranged according to the number of second power auxiliary lines 502 and first data lines DL1 . For example, two, three, four, five, six, or seven second connection lines 132 can be provided between two adjacent second power auxiliary lines 502 . For example, as shown in FIG12 , three second connection lines 132 can be provided between two adjacent second power auxiliary lines 502 . FIG12 is a structural diagram of a display panel including second power auxiliary lines and a contact portion that at least partially contacts the first extension segment.

[0145] In some embodiments, as shown in Figures 11 and 12, 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 near the display area AA) and the first end of the second sub-section 312 (the end near the display area AA) are both connected to the first power bus VSS2 (second sub-line VSS22). The first power fan-out line VSS3 also includes a binding portion 32, which extends along the first direction X. The binding portion 32 has two ends along the first direction X 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), respectively, connecting the first sub-section 311 and the second sub-section 312 into a single entity. Exemplarily, the binding portion 32 is configured to be bound to a flexible circuit board and electrically connected to the driver circuit board via the flexible circuit board.

[0146] Exemplarily, as shown in Figure 11, 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, as shown in Figure 12, 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).

[0147] Referring to FIG. 13 , in some 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. The cathode layer of the display panel 1100 is directly electrically connected to the cathode power line VSS1. The current transmitted by the cathode layer is primarily concentrated on the cathode power line VSS1. In other words, the current on the cathode power line VSS1 is greater than the current on the auxiliary power line 50. Furthermore, the current on the cathode power line VSS1 converges from the side away from the fan-out area BB1 to the side closer to the fan-out area BB1. Based on this, and because the second sub-section 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-section 311, the current in the second sub-section 312 is greater than the current in the first sub-section 311. 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. This increases the area of ​​the second subsection 312, thereby reducing the current density in the second subsection 312, balancing the current density in the second subsection 312 and the first subsection 311, and reducing the risk of heat accumulation and temperature rise in the second subsection 312. Figure 13 shows the structure of the display panel when the width of the second subsection is greater than the width of the first subsection.

[0148] It will be appreciated that, in the embodiment of the present disclosure, as shown in FIG13 , 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. This embodiment can be implemented independently of other embodiments or in combination with any one or more of the aforementioned embodiments. In other words, 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 and second sub-sections 311, 312, and the first power bus VSS2 can be arbitrarily set as needed.

[0149] For example, as shown in FIG. 13 , the first sub-portion 311 and the second sub-portion 312 may both be in contact with and connected to the second extending section 22 of the first power bus VSS2 .

[0150] As shown in Figure 14 , in some 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. This reduces the current density in the second subsection 312 and balances the current density in the second subsection 312 with that in the first subsection 311. Furthermore, a portion of the second subsection 312 is in contact with the first extension section 21, another portion is in contact with the second extension section 22, and the entire first subsection 311 is in contact with the second extension section 22. This reduces the current density in the target area M, thereby reducing the risk of heat accumulation and damage to the light-emitting device in the target area M. Figure 14 illustrates the structure of the display panel when a portion of the second subsection is in contact with the first extension section.

[0151] As shown in FIG15 , 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, thereby reducing the current density in the second subsection 312 and balancing the current density in the second subsection 312 and the first subsection 311. The entire second subsection 312 is in contact with the first extension 21, while the first subsection 311 is in contact with the second extension 22. This further reduces the current density in the target area M, thereby reducing the risk of heat accumulation in the target area M and damage to the light-emitting device. FIG15 illustrates the structure of the display panel when the second subsection is in contact with the first extension, and the first subsection is in contact with the second extension.

[0152] As shown in Figure 16 , in some further 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, thereby reducing the current density in the second subsection 312 and balancing the current density in the second subsection 312 with that in the first subsection 311. Both the first subsection 311 and the second subsection 312 are in contact with the first extension 21, which can significantly reduce the current density in the target area M and reduce the risk of heat accumulation and damage to the light-emitting device in the target area M. Figure 16 illustrates the structure of the display panel when both the first and second subsections are in contact with the first extension.

[0153] As shown in FIG17 , in some further 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 plurality of auxiliary power supply lines 50 include a second auxiliary power supply line 502, and the first sub-portion 311 and the second sub-portion 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 lines of the gate drive circuit, but the current density of the target area M can also be reduced, reducing the risk of heat accumulation in the target area M and damage to the light-emitting device. Among them, FIG17 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 the first sub-portion and the second sub-portion are both in contact with and connected to the second extension section.

[0154] As shown in FIG18 , in some further 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, thereby reducing the current density in the second subsection 312 and balancing the current density in the second subsection 312 and the first subsection 311. The plurality of auxiliary power supply lines 50 include a second auxiliary power supply line 502. Furthermore, at least a portion of the first subsection 311 is in contact with and connected to the second extension section 22, and at least a portion of the second subsection 312 is in contact with and connected to the first extension section 21. Based on this, the wiring space in the fan-out area BB1 can be increased, which is beneficial for the routing design of the signal lines of the gate drive circuit and can further reduce the current density in the target area M, thereby reducing the risk of heat accumulation in the target area M and damage to the light-emitting device. FIG18 shows a structural diagram of a display panel in which the second subsection is wider than the first subsection, and the second subsection is in contact with and connected to the first extension section, and the first subsection is in contact with and connected to the second extension section.

[0155] In some embodiments, the size of the first subsection 311 along the first direction is D1. The size of the second subsection 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 subsection 312 is 1.2 to 4 times the size of the first subsection 311. For example, D2 = 1.2D1, D2 = 2D1, D2 = 3.5D1, or D2 = 4D1. These are not listed in detail in the embodiments of the present disclosure.

[0156] In some embodiments, referring to 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 . 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. This facilitates the transmission of current from the first power auxiliary line 501 to the first power bus VSS2 , reduces the current density at the connection point between the first power auxiliary line 501 and the first power bus VSS2 , reduces the risk of connection failure (such as breakage) at the connection point between the first power auxiliary line 501 and the first power bus VSS2 , and improves the connection reliability between the first power auxiliary line 501 and the first power bus VSS2 . FIG. 19 is a partially enlarged view of the first power auxiliary line according to some embodiments.

[0157] It can be understood that other power auxiliary lines 50 (such as the second power auxiliary line 502 and the third power auxiliary line 503) can all be structures as shown in Figure 19, that is, other power auxiliary lines 50 can also include a third extension section 41 and a fourth extension section 42. In this way, the connection reliability between all power auxiliary lines 50 and the first power bus VSS2 can be improved.

[0158] In some embodiments, the dimension of the third extension section 41 along the first direction X is D3; the dimension of the fourth extension section 42 along the first direction X is D4. D3 and D4 satisfy the following: D3 = (2-5) * D4. In other words, along the first direction X, the dimension of the third extension section 41 is 2 to 5 times the dimension of the fourth extension section 42. For example, the dimension of the third extension section 41 is 2, 2.5, 4, 5, etc., of the fourth extension section 42.

[0159] In some embodiments, as shown in Figure 18, 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.

[0160] As shown in FIG18 , 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 electrically connect to the pixel circuits within the display area AA and transmit a second voltage signal to the pixel circuits. The second power fan-out line VDD2 is configured to lead the second power bus VDD1 out to the fan-out area for bonding with the flexible printed circuit board and electrically connect to the driver circuit board via the flexible printed circuit board.

[0161] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that a person skilled in the art can conceive within the technical scope disclosed in the present disclosure should be included within the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A display panel, comprising 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, further comprising: 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, wherein: The first power bus includes a first extension segment and a second extension segment. Along the second direction, the first extension segment The second 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 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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 16, wherein: 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, wherein: 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 18, wherein: 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, comprising: 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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