Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises a plurality of first signal lines, at least one first signal line comprising a first signal segment and a second signal segment separated by a functional area, the first direction and the second direction intersecting; a second signal line comprising a plurality of first sub-lines and a plurality of second sub-lines; a first connection line located in a winding display area, comprising a first connection segment and two second connection segments, the first connection segment being connected between the two second connection segments; the second connection segment and the second sub-line being located in the same metal layer, the second sub-line comprising a plurality of first sub-segments disconnected at the second connection segment, the second sub-line comprising second sub-segments located on both sides of the first sub-line respectively; a connection structure located in a regular display area and connected with the first sub-line; a redundant structure located in the winding display area, the distribution density of the redundant structure being consistent with the distribution density of the connection structure. According to the embodiment of the application, the metal density difference between the winding display area and the regular display area can be reduced.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display panel and display device. Background Technology

[0002] Electronic devices such as mobile phones and tablets need to integrate components such as front-facing cameras, earpieces, and infrared sensors. In related technologies, the display screen can have a transparent display area where the front-facing camera, earpiece, and infrared sensors are housed; alternatively, an opening can be made in the display screen, allowing external light to enter a light-sensing component located beneath the screen.

[0003] To ensure signal connectivity, a winding design is required around the transparent display area or the hole area, which serves as the winding display area.

[0004] In addition, the pads in the non-display area can be connected to the signal lines in the display area via fan-out traces. In narrow-bezel products, some of the fan-out traces can be placed in the display area, and the display area occupied by the fan-out traces can be used as a wire-wrap display area.

[0005] However, in the winding design, the mura (unevenness) can be perceived by the human eye when the display panel is on or off, resulting in a poor user experience. Summary of the Invention

[0006] This application provides a display panel and display device to avoid mura when the display panel is lit or turned off, thereby improving the user experience and display effect.

[0007] In a first aspect, embodiments of this application provide a display panel having a display area, the display area including a wire-wound display area and a conventional display area. The display panel includes: a plurality of first signal lines located in the display area, the plurality of first signal lines being arranged along a first direction and extending along a second direction, the first direction intersecting the second direction; a second signal line located in the display area, including a plurality of first branch lines and a plurality of second branch lines electrically connected to each other, the first branch lines extending along the first direction and the second branch lines extending along the second direction; a first connecting line located in the wire-wound display area, including a first connecting segment and a second connecting segment, the first connecting segment being connected to the first signal line through the second connecting segment, the first connecting segment extending along the second direction and the second connecting segment extending along the first direction; the second connecting segment and the second branch line being located in the same metal layer, in the wire-wound display area, the second branch line including a plurality of first segments broken at the second connecting segment, and in the conventional display area, the second branch line including second segments located on both sides of the first branch line; a connecting structure located in the conventional display area and connected to the first branch line; and a redundant structure located in the wire-wound display area, the distribution density of the redundant structure being consistent with the distribution density of the connecting structure.

[0008] In one possible implementation of the first aspect, the display panel further includes a functional area, the display area surrounding at least a portion of the functional area, a wired display area adjacent to the functional area, at least one first signal line including a first signal segment and a second signal segment separated by the functional area, and a first connecting line including two second connecting segments, one of which is connected to the first signal segment and the first connecting segment, and the other second connecting segment is connected to the second signal segment and the first connecting segment. Alternatively, one end of the first connection segment is connected to the first signal line via the second connection segment, and the other end of the first connection segment is electrically connected to the pads of the display panel.

[0009] In one possible implementation of the first aspect, the second connecting segment and the first branch line are located in the same metal layer, and the second connecting segment is located on the extension line of the first branch line; Preferably, the second signal line further includes multiple third branches, which extend along the second direction and are located in different metal layers from the first branch. Preferably, the second signal line is a power signal line or a reset signal line; Preferably, the connecting structure is connected to one of the second branch line and the third branch line; Preferably, the orthographic projection of the third branch line on the substrate of the display panel at least partially overlaps with the orthographic projection of the second branch line on the substrate, and the orthographic projection of the redundant structure on the substrate of the display panel at least partially overlaps with the orthographic projection of the second connecting segment on the substrate. Preferably, the display area includes an array of pixel circuits, and the orthographic projection of the second connection segment on the substrate does not overlap with the orthographic projection of the pixel circuit on the substrate; Preferably, the display panel includes a light-emitting element, which includes a stacked first electrode, a light-emitting layer, and a second electrode. The orthographic projection of the opposite ends between the second connecting segment and the first branch line on the substrate at least partially overlaps with the orthographic projection of the first electrode on the substrate. Preferably, the first signal line and the third branch line are located in the same metal layer.

[0010] In one possible implementation of the first aspect, the connection structure is a connection trace extending along the second direction, and the connection structure and the second segment are located in the same metal layer, and the connection structure and the second segment are an integral structure. The redundant structure consists of redundant traces extending along the second direction; Preferably, the extension length of the redundant structure in the second direction is d1, and the distance between the two first segments on both sides of the second connecting segment in the second direction is d2, where d1=d2; Preferably, the distance between the redundant structure and the first segment in the first direction is greater than 0; Preferably, the orthographic projection of the redundant structure on the substrate does not overlap with the orthographic projection of the first signal line on the substrate; In one possible implementation of the first aspect, the redundant structure and the second connecting segment are located in the same metal layer, and the redundant structure and the second connecting segment are cross-connected, and the width of the redundant structure in the first direction is equal to the width of the connecting structure in the first direction. Alternatively, the metal layer containing the redundant structure is located between the metal layer containing the second connection segment and the substrate, and the width of the redundant structure in the first direction is greater than the width of the connection structure in the first direction.

[0011] In one possible implementation of the first aspect, the second signal line further includes a plurality of third branches extending along a second direction, and the third branches and the first branch are located in different metal layers. The connection structure is a connecting via between the first branch line and the third branch line, and the redundancy structure is a redundant via. Preferably, one end of the redundant structure is connected to the second connecting segment, and the other end of the redundant structure is suspended. Preferably, in the second direction, the distance between the two first segments on both sides of the second connecting segment is d2, and the distance between the two second segments on both sides of the first dividing line is d3, where d2=d3.

[0012] In one possible implementation of the first aspect, the display panel further includes multiple virtual traces, which are arranged along a first direction and extend along a second direction, with some virtual traces being reused as a first connection segment. Preferably, the virtual trace and the first signal line are located on the same metal layer; Preferably, in the first direction, N first signal lines are distributed between every two adjacent virtual traces, where N is an integer greater than 1.

[0013] In one possible implementation of the first aspect, the display panel further includes a functional area surrounding at least a portion of the functional area. The display area includes a first light-emitting element, the functional area includes a second light-emitting element, and the display area includes a plurality of pixel circuits and a plurality of virtual circuits arranged in an array. The pixel circuits are connected to the first light-emitting element, and the virtual circuits are connected to the second light-emitting element. Preferably, the first signal line is connected to the pixel circuit, the virtual trace is connected to the virtual circuit, and the orthographic projection of the first signal line on the substrate of the display panel at least partially overlaps with the orthographic projection of the pixel circuit on the substrate, and the orthographic projection of the virtual trace on the substrate at least partially overlaps with the orthographic projection of the virtual circuit on the substrate. Preferably, the virtual trace reused as the first connection segment includes a first virtual segment and a second virtual segment that are disconnected, and the first virtual segment is reset as the first connection segment.

[0014] In one possible implementation of the first aspect, the display panel further includes a functional area surrounding at least a portion of the functional area, and the display panel also includes: Multiple third signal lines, the third signal lines extending along a first direction, the multiple third signal lines arranged along a second direction, and at least one third signal line including a third signal segment and a fourth signal segment separated by functional areas; The second connecting line, located in the winding display area, includes a third connecting segment and two fourth connecting segments. One fourth connecting segment is connected to the third signal segment and the third connecting segment, and the other fourth connecting segment is connected to the fourth signal segment and the third connecting segment. The third connecting segment extends along a first direction, and the fourth connecting segment extends along a second direction. The third connecting segment and the first branch line are located on the same metal layer, and the third connecting segment is located on the extension line of the first branch line.

[0015] In one possible implementation of the first aspect, the first signal line is a data signal line, the second signal line is a power signal line, the third signal line is any one of a scan signal line, a light emission control signal line, and a reset signal line, and the second connection line is located on the side of the first connection line away from the functional area. Preferably, the display panel further includes multiple virtual traces, which are arranged along a first direction and extend along a second direction, with some virtual traces being reused as a fourth connection segment; Preferably, the virtual trace reused as the fourth connection segment includes a disconnected third virtual segment and a fourth virtual segment, which are reused as the fourth connection segment of different second connection lines.

[0016] Based on the same inventive concept, in a second aspect, embodiments of this application provide a display device including a display panel as described in any embodiment of the first aspect.

[0017] According to the display panel and display device provided in the embodiments of this application, a redundant structure is provided in the winding display area, and the distribution density of the redundant structure is consistent with the distribution density of the connecting structure. In this way, the difference in metal density between the winding display area and the conventional display area can be reduced, thereby avoiding mura when the display panel is lit or turned off, thus improving the user experience and display effect. Attached Figure Description

[0018] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals denote the same or similar features, and the drawings are not drawn to scale.

[0019] Figure 1 This is a top view schematic diagram of a display panel provided in an embodiment of this application; Figure 2 This illustration shows another top view of the display panel provided in an embodiment of this application; Figure 3 Show Figure 1 A schematic diagram of the structure of region Q1 in the middle; Figure 4a Show Figure 1 Another structural diagram of the Q1 region; Figure 4b Show Figure 4a An enlarged schematic diagram of the Q11 region; Figure 5 This illustration shows a wiring structure diagram of a display panel provided in an embodiment of this application; Figure 6 Show Figure 2 A schematic diagram of the structure of the Q2 region; Figure 7 Show Figure 2 Another structural diagram of the Q2 region; Figure 8 Show Figure 6 A comparative example diagram; Figure 9 Show Figure 6 A schematic diagram of a cross-sectional structure along the A-A' direction; Figure 10 Show Figure 6 Another cross-sectional structural diagram along the A-A' direction; Figure 11 Show Figure 7 A schematic diagram of a cross-sectional structure along the B-B' direction; Figure 12 Show Figure 7 Another cross-sectional structural diagram along the B-B' direction; Figure 13 This diagram illustrates a possible structure of a pixel circuit in a display panel. Figure 14 This diagram illustrates a possible structure of a virtual circuit in a display panel. Figure 15 Show Figure 1 Another structural diagram of the Q1 region; Figure 16 Show Figure 1 Another structural diagram of the Q1 region; Figure 17 This is a schematic diagram of a display device provided in an embodiment of this application. Detailed Implementation

[0020] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0022] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0023] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0024] It should be noted that when a component is described as "connected" or "electrically connected" to another component, it can be directly connected to the other component, or there may be one or more intermediate components in between.

[0025] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the implementation methods provided in the embodiments of this application can be combined with each other without contradiction.

[0026] Before describing the technical solutions provided in the embodiments of this application, in order to facilitate understanding of the embodiments of this application, this application first specifically explains the problems existing in the related technologies: For under-display camera structures or punch-hole screen structures, the presence of the transparent display area or hole area causes signal line breaks around the hole or transparent display area. To ensure signal connectivity, a winding design is needed around the transparent display area or hole area; this winding area serves as the winding display area. Additionally, pads in non-display areas can be connected to signal lines in the display area via fan-out traces. In narrow-bezel products, some of the fan-out traces can be placed in the display area, and the display area occupied by the fan-out traces can serve as the winding display area.

[0027] However, due to the winding design, there is a density difference between the metal in the winding display area and the regular display area. This causes the mura to be visible to the human eye when the display panel is on or off, resulting in a poor user experience.

[0028] To address the aforementioned problems, this application provides a display panel and a display device. The following description, in conjunction with the accompanying drawings, will illustrate various embodiments of the display panel and the display device.

[0029] This application provides a display panel, which may be an organic light-emitting diode (OLED) display panel.

[0030] Figure 1 This illustration shows a top view of a display panel provided in an embodiment of this application. Figure 2 This diagram shows another top view of the display panel provided in an embodiment of this application. Figure 3 Show Figure 1 A structural diagram of region Q1 in the middle. Figure 4a Show Figure 1 Another structural diagram of region Q1 in the middle, Figure 4b Show Figure 4a An enlarged schematic diagram of the Q11 region. Figure 5 This diagram illustrates a wiring structure of a display panel according to an embodiment of this application. Figure 6 Show Figure 2 A structural diagram of the Q2 region. Figure 7 Show Figure 2 Another structural diagram of the Q2 region.

[0031] It should be noted that, in order to more clearly illustrate the first connecting line, Figure 3 The second signal line is not shown in the diagram. To clearly illustrate the distribution of the second signal line and the first connection line, Figure 4a , Figure 4b The diagram illustrates the first connecting line and the second signal line.

[0032] Please refer to Figures 1 to 7 The display panel 100 may have a display area AA. The display area AA includes a wire-wound display area AA1 and a regular display area AA2.

[0033] The display panel 100 may include a first signal line 11, a second signal line 12, a first connecting line 21, a connecting structure 31, and a redundancy structure 41.

[0034] The first signal line 11 is located in the display area AA. Multiple first signal lines 11 are arranged along a first direction X and extend along a second direction Y, with the first direction X and the second direction Y intersecting. For example, the first direction X can be a row direction, and the second direction Y can be a column direction. Of course, the row direction and the column direction can be interchanged.

[0035] The second signal line 12 is located in the display area AA. The second signal line 12 includes multiple first branch lines 121 and multiple second branch lines 122 that are electrically connected to each other. The first branch lines 121 extend along a first direction X, and the second branch lines 122 extend along a second direction Y. It is understood that the multiple first branch lines 121 and multiple second branch lines 122 can form a mesh structure. The signals transmitted on the first branch lines 121 and the second branch lines 122 are the same.

[0036] The first connecting line 21 is located in the winding display area AA1. The first connecting line 21 includes a first connecting segment 211 and a second connecting segment 212. The first connecting segment 211 extends along a second direction Y, and the second connecting segment 212 extends along a first direction X. The first connecting segment 211 can be connected to the first signal line 11 through the second connecting segment 212. The signals transmitted on the first connecting line 21 and the first signal line 11 are the same; for example, the first connecting line 21 and the first signal line 11 can be used to transmit data signals.

[0037] The second connecting segment 212 and the second branch line 122 are located in the same metal layer. In the winding display area AA1, the second branch line 122 includes a plurality of first segments 122a that are broken at the second connecting segment 212. In the regular display area AA2, the second branch line 122 includes second segments 122b located on both sides of the first branch line 121.

[0038] The connection structure 31 is located in the regular display area AA2 and is connected to the first branch line 121.

[0039] The redundant structure 41 is located in the winding display area AA1, and the distribution density of the redundant structure 41 is similar to that of the connection structure 31.

[0040] For a better understanding of the embodiments of this application, please refer to Figure 8 , Figure 8 and Figure 6 The similarities will not be repeated here; the differences are... Figure 8 The redundancy structure 41 is not set in the middle. Figure 8 If the conventional display area AA2 has a connecting structure 31, while the winding display area AA1 does not have a redundant structure 41, the metal in the winding display area AA1 and the conventional display area AA2 will have a density difference. This will result in a mura that can be seen by the human eye when the display panel is lit or turned off, thus causing a poor user experience.

[0041] In this embodiment, a redundant structure 41 is provided in the wire-wound display area AA1, and the distribution density of the redundant structure 41 is consistent with the distribution density of the connection structure 31. In this way, the difference in metal density between the wire-wound display area AA1 and the conventional display area AA2 can be reduced, thereby avoiding mura when the display panel is lit or turned off, thus improving the user experience and display effect.

[0042] In some embodiments, such as Figure 1 As shown, the display panel may include a function area FA, and a display area AA surrounds at least a portion of the function area FA. The display area AA includes a wired display area AA1 and a regular display area AA2, with the wired display area AA1 adjacent to the function area FA. For example, the wired display area AA1 may surround the function area FA, and the regular display area AA2 may enclose the wired display area AA1.

[0043] For example, the functional area FA can be used to house a photosensitive component. The photosensitive component can be an image acquisition device used to acquire external image information. For example, the photosensitive component is a camera. The photosensitive component is not limited to an image acquisition device; for example, in some embodiments, the photosensitive component can also be an infrared sensor, a proximity sensor, an infrared lens, a flood illuminator, an ambient light sensor, and a dot projector, etc., a light sensor. The functional area FA can be used for display, and the display panel can be provided with sub-pixels for display within the functional area FA. Alternatively, the functional area FA can be a punch-hole area, and the display panel may not have sub-pixels within the functional area FA.

[0044] The function area FA can be a rectangular area, a circular area, an elliptical area, or a square area, etc. The shape of the function area FA can be set according to actual needs, and this application does not limit it.

[0045] In the case where the display panel includes a function area FA, such as Figure 3 or Figure 4a As shown, at least one first signal line 11 includes a first signal segment 111 and a second signal segment 112 separated by a functional area FA.

[0046] For example, a portion of the first signal line 11 of the display panel is located on both sides of the functional area FA in the first direction X.

[0047] The first connecting line 21 includes a first connecting segment 211 and two second connecting segments 212, one of which is connected to the first signal segment 111 and the first connecting segment 211, and the other connecting segment 212 is connected to the second signal segment 112 and the first connecting segment 211.

[0048] In other embodiments, such as Figure 5 As shown, the first connecting line 21 includes a first connecting segment 211 and a second connecting segment 212. One end of the first connecting segment 211 is connected to the first signal line 11 through the second connecting segment 212, and the other end of the first connecting segment 211 is electrically connected to the pad 71 of the display panel.

[0049] Pad 71 is located in the non-display area NA of the display panel. Pad 71 can be used to bond driver chips. It is understood that... Figure 5 The wiring structure shown is equivalent to placing some of the fan-out wiring in the display area, thereby achieving a narrow bezel.

[0050] It should be noted that the winding design provided in this application embodiment can be applied to UDC screens (UDC screens include under-display camera structures) and punch-hole screens, and can also be applied to narrow bezel products, such as FIAA screens (FIAA screens include structures in which some fan-out wiring is set in the display area).

[0051] Furthermore, although only the figures in this application utilize Figure 6 and Figure 7 It indicated Figure 2 Wiring structure in, such as Figure 1 As shown, when the display panel includes the functional area FA, the wiring structure of the regular display area and the wire-wound display area can be as follows: Figure 6 or Figure 7 As shown in the accompanying drawings. Furthermore, the number of signal lines in the drawings is merely exemplary and not intended to limit the scope of this application.

[0052] Figure 9 Show Figure 6 A schematic diagram of a cross-sectional structure along the A-A' direction. Figure 10 Show Figure 6 Another cross-sectional structural diagram along the A-A' direction. Figure 11 Show Figure 7 A schematic diagram of a cross-sectional structure along the B-B' direction. Figure 12 Show Figure 7 Another cross-sectional structural diagram along the B-B' direction.

[0053] It should be noted that, Figure 9 and Figure 11 Taking low-temperature poly-silicon (LTPS) display panels as an example, Figure 10 and Figure 12 Taking a display panel of the Low Temperature Polycrystalline Oxide (LTPO) type as an example, this is not intended to limit this application.

[0054] In some embodiments, such as Figures 9 to 12 As shown in any of the attached figures, the second connecting segment 212 and the first branch line 121 are located on the same metal layer, and the second connecting segment 212 is located on the extension line of the first branch line 121.

[0055] Since the second connecting segment 212 is located on the extension line of the first branch line 121, it is equivalent to replacing the first branch line 121 with the second connecting segment 212 at the same location. This avoids the need for an additional metal layer to accommodate the second connecting segment 212, which is beneficial for the thinner and lighter design of the display panel.

[0056] Understandably, the second connection segment 212 and the first branch line 121 are disconnected from each other. The signals transmitted by the second connection segment 212 and the first branch line 121 are different.

[0057] "On the extension line" does not mean on the extension line in a geometric sense. Due to manufacturing process errors, as long as the second connecting segment 212 is within the error range and located on the extension line of the first branch line 121, it is acceptable.

[0058] In some embodiments, such as Figure 6 As shown, the second signal line 12 may also include multiple third branch lines 123. The third branch lines 123 extend along the second direction Y, and the third branch lines 123 and the first branch line 121 are located in different metal layers. As described above, the second connecting segment 212 and the first branch line 121 are located in the same metal layer. Therefore, the third branch lines 123 and the second connecting segment 212 are located in different metal layers. The third branch lines 123 can be distributed in both the conventional display area AA2 and the wire-wound display area AA1.

[0059] In addition, since the third branch line 123 and the second connecting segment 212 are located in different metal layers, the third branch line 123 is not separated by the second connecting segment 212, and the third branch line 123 can be continuous as a whole.

[0060] The first branch line 121, the second branch line 122, and the third branch line 123 are electrically connected to each other. The first branch line 121, the second branch line 122, and the third branch line 123 transmit the same signal.

[0061] For example, such as Figure 6 or Figure 7 As shown, the second branch line 122 and the third branch line 123 can be connected by a via (not shown in the figure), and the connecting via between the second branch line 122 and the third branch line 123 overlaps with the pixel circuit 51 of the display panel. For example, the display panel may include a substrate, and the orthographic projection of the connecting via between the second branch line 122 and the third branch line 123 on the substrate may overlap with the orthographic projection of the pixel circuit 51 on the substrate.

[0062] For example, the second signal line 12 is a power signal line (VDD). The power signal line (VDD) can be used to transmit positive voltage signals, and the current source of the sub-pixels of the display panel can come from the power signal line (VDD).

[0063] Alternatively, the second signal line 12 can be a reset signal line (Vref). The reset signal line (Vref) can be used to transmit a negative voltage signal. For example, the reset signal line (Vref) can be used to transmit a reset signal to the driving transistor of the pixel circuit, and / or to transmit a reset signal to the anode of the light-emitting element.

[0064] For example, connection structure 31 may be connected to one of the second branch line 122 and the third branch line 123.

[0065] like Figure 9 As shown, the orthographic projection of the third dividing line 123 on the substrate 01 of the display panel and the orthographic projection of the second dividing line 122 on the substrate 01 can at least partially overlap, thereby improving the aperture ratio of the display panel.

[0066] Since the connecting structure 31 is connected to the first branch line 121, such as Figure 9 As shown, the orthographic projection of the connection structure 31 on the substrate 01 of the display panel and the orthographic projection of the first dividing line 121 on the substrate 01 can at least partially overlap.

[0067] To increase the consistency of the distribution pattern between redundant structure 41 and connecting structure 31, such as Figure 9 As shown, the orthographic projection of the redundant structure 41 on the substrate 01 of the display panel and the orthographic projection of the second connecting segment 212 on the substrate 01 can at least partially overlap.

[0068] In some embodiments, such as Figure 6 or Figure 7As shown, both the wire-wound display area AA1 and the conventional display area AA2 can include an array of pixel circuits 51. The orthographic projection of the second connecting segment 212 on the substrate and the orthographic projection of the pixel circuit 51 on the substrate may not overlap. This reduces the coupling between the second connecting segment 212 and the pixel circuit 51, improving display stability.

[0069] In some embodiments, such as Figure 9 As shown, the display panel includes a light-emitting element 53, which includes a stacked first electrode 531, a light-emitting layer 533, and a second electrode 532. The orthographic projection of the opposite ends of the second connecting segment 212 and the first branch line 121 onto the substrate 01 at least partially overlaps with the orthographic projection of the first electrode 531 onto the substrate 01. The second connecting segment 212 and the first branch line 121 are disconnected, meaning the break point between them is hidden below the first electrode 531, thereby avoiding visible mura when the screen is off or at a wide viewing angle, further improving the display effect.

[0070] For example, such as Figure 9 As shown, the first signal line 11 and the third branch line 123 can be located in the same metal layer.

[0071] In some embodiments, please refer to Figure 6 as well as Figure 9 or Figure 10 The connection structure 31 can be a connection trace extending along the second direction Y, and the connection structure 31 and the second segment 122b are located in the same metal layer, and the connection structure 31 and the second segment 122b are an integral structure.

[0072] When the connection structure 31 is a connection trace, the redundant structure 41 can be a redundant trace extending along the second direction Y. This increases the consistency of the distribution pattern between the redundant structure 41 and the connection structure 31.

[0073] For example, the redundant structure 41 extends for a length of d1 in the second direction Y, and the distance between the two first segments 122a on both sides of the second connecting segment 212 in the second direction is d2, where d1=d2.

[0074] The spacing between the redundant structure 41 and the first segment 122a in the first direction X is greater than 0, thereby avoiding affecting the electrical properties of the pixel circuit. For example, the spacing between the redundant structure 41 and the first segment 122a in the first direction X is about 2.5 μm.

[0075] For example, the orthographic projection of the redundant structure 41 on the substrate 01 and the orthographic projection of the first signal line 11 on the substrate 01 may not overlap, thereby reducing the coupling between the redundant structure 41 and the first signal line 11.

[0076] In some embodiments, such as Figure 9 or Figure 10 As shown, the redundant structure 41 and the second connecting segment 212 can be located in the same metal layer, and the redundant structure 41 and the second connecting segment 212 are cross-connected. The width of the redundant structure 41 in the first direction X is equal to the width of the connecting structure 31 in the first direction X.

[0077] In other words, when the redundant structure 41 and the connecting structure 31 are located in the same metal layer, the projected areas of the redundant structure 41 and the connecting structure 31 on the substrate can be basically the same, thereby further increasing the consistency of their distribution patterns and further increasing the consistency of the metal density between the wire-wound display area and the conventional display area.

[0078] In other embodiments, the metal layer containing the redundant structure 41 is located between the metal layer containing the second connecting segment 212 and the substrate 01, and the width of the redundant structure 41 in the first direction X is greater than the width of the connecting structure 31 in the first direction X.

[0079] In other words, when the redundant structure 41 is located below the connecting structure 31, the projected area of ​​the redundant structure 41 on the substrate can be larger than that of the connecting structure 31 on the substrate. Since the light reflection intensity of the lower metal is lower than that of the upper metal, a larger area of ​​the redundant structure 41 can further reduce the optical difference between the redundant structure 41 and the connecting structure 31, thereby further increasing the display consistency between the wire-wound display area and the conventional display area.

[0080] In other embodiments, please refer to Figure 7 as well as Figure 11 or Figure 12 The connecting structure 31 can be a connecting via connecting the first branch line 121 and the third branch line 123. When the connecting structure 31 is a connecting via, the redundant structure 41 can be a redundant via. In this way, both the connecting structure 31 and the redundant structure are via structures, which can increase the consistency of the distribution pattern of the redundant structure 41 and the connecting structure 31, thereby increasing the consistency of the via density between the winding display area and the conventional display area.

[0081] For example, when the redundant structure 41 is a redundant via, one end of the redundant structure 41 can be connected to the second connection segment 212, and the other end of the redundant structure 41 can be left suspended. This avoids connecting the redundant structure 41 to other structures, thereby preventing unnecessary signal interference.

[0082] For example, in the second direction Y, the distance between the two first segments 122a on both sides of the second connecting segment 212 is d2, and the distance between the two second segments 122b on both sides of the first dividing line 121 is d3, where d2=d3.

[0083] In some embodiments, such as Figure 3 As shown, the display panel may also include multiple virtual traces 61, which are arranged along the first direction X and extend along the second direction Y. Some of the virtual traces 61 can be reused as the first connection segment 211. In this way, the density of signal lines extending along the second direction Y in the wire-wound display area AA1 and the conventional display area AA2 can be basically the same, thereby further improving the consistency of the metal density between the wire-wound display area AA1 and the conventional display area AA2.

[0084] For example, the virtual trace 61 and the first signal line 11 may be located on the same metal layer.

[0085] In the first direction X, N first signal lines 11 can be distributed between every two adjacent virtual traces 61, where N is an integer greater than 1. For example, N=4.

[0086] In some embodiments, please refer to Figure 3 , Figure 13 and Figure 14 The display panel also includes a functional area FA, and a display area AA surrounds at least part of the functional area FA. The display area AA may include a first light-emitting element 53a, and the functional area FA includes a second light-emitting element 53b. The display area AA includes a plurality of pixel circuits 51 and a plurality of virtual circuits 52 arranged in an array. The pixel circuits 51 may be connected to the first light-emitting element 53a, and some of the virtual circuits 52 may be connected to the second light-emitting element 53b.

[0087] In this embodiment, the driving circuit of the second light-emitting element 53b is externally placed in the display area AA, thereby improving the light transmittance of the functional area FA. Furthermore, the array distribution of multiple virtual circuits 52 reduces moiré patterns on the display panel.

[0088] For example, the pixel circuit 51 and the virtual circuit 52 can have the same circuit structure. For instance, both pixel circuit 51 and virtual circuit 52 can include 7 transistors and 1 storage capacitor; the connection relationships of each component are detailed below. Figure 13 and Figure 14 This will not be elaborated upon here.

[0089] in addition, Figure 13 and Figure 14 In the diagram, VDD represents the power signal line, VSS represents the common voltage line, Vref represents the reset signal line, Vdata represents the data signal line, Scan1 and Scan2 represent the scan signal lines, and EM represents the light emission control signal line.

[0090] The first signal line 11 is connected to the pixel circuit 51. The orthographic projection of the first signal line 11 on the substrate of the display panel and the orthographic projection of the pixel circuit 51 on the substrate can at least partially overlap, so as to facilitate the connection of the first signal line 11 and the pixel circuit 51.

[0091] Virtual trace 61 connects to virtual circuit 52. The orthographic projection of virtual trace 61 on the substrate and the orthographic projection of virtual circuit 52 on the substrate can at least partially overlap to facilitate the connection between virtual trace 61 and virtual circuit 52.

[0092] For example, the first signal line 11 and the virtual trace 61 can be used as data signal lines Vdata, and the second signal line 12 can be used as power signal lines VDD.

[0093] As an example, such as Figure 3 As shown, each virtual trace 61 can be a continuous trace overall.

[0094] As another example, such as Figure 15 As shown, the virtual trace 61 reused as the first connection segment 211 includes a first virtual segment 611 and a second virtual segment 612 that are disconnected. The first virtual segment 611 is reset to the first connection segment 211. Since the virtual trace 61 is connected to the virtual circuit 52, only resetting the first virtual segment 611 to the first connection segment 211 can reduce the load on the first connection line 21.

[0095] In some embodiments, such as Figure 16 As shown, the display panel also includes a functional area FA, and a display area AA surrounds at least a portion of the functional area FA. The display panel may also include a third signal line 13 and a second connection line 22.

[0096] The third signal line 13 extends along the first direction X, and multiple third signal lines 13 are arranged along the second direction Y. At least one third signal line 13 includes a third signal segment 133 and a fourth signal segment 134 separated by the functional area FA.

[0097] The second connecting line 22 is located in the winding display area AA1. The second connecting line 22 includes a third connecting segment 223 and two fourth connecting segments 224. One of the fourth connecting segments 224 is connected to the third signal segment 133 and the third connecting segment 223, and the other fourth connecting segment 224 is connected to the fourth signal segment 134 and the third connecting segment 223. The third connecting segment 223 extends along the first direction X, and the fourth connecting segment 224 extends along the second direction Y.

[0098] The third connecting segment 223 and the first branch line 121 are located on the same metal layer, and the third connecting segment 223 is located on the extension line of the first branch line 121.

[0099] Similarly, since the third connecting segment 223 is located on the extension line of the first branch line 121, it is equivalent to no longer setting the first branch line 121 at the location of the third connecting segment 223, but instead setting the third connecting segment 223. This avoids the need to add an extra metal layer to set the third connecting segment 223, which is beneficial for the thinner and lighter design of the display panel.

[0100] Understandably, the third connection segment 223 and the first branch line 121 are disconnected from each other. The signals transmitted by the third connection segment 223 and the first branch line 121 are different.

[0101] Understandably, in the winding display area AA1, the second signal line 12 is interrupted by the third connecting segment 223.

[0102] In some embodiments, the first signal line 11 is a data signal line Vdata, the second signal line 12 is a power signal line VDD, and the third signal line 13 is any one of the scan signal lines Scan1 / Scan2, the light emission control signal line EM, and the reset signal line Vref. The second connection line 22 is located on the side of the first connection line 21 away from the functional area FA. The first connection line 21 transmits data signals, and its proximity to the functional area FA reduces the voltage drop of the first connection line 21.

[0103] like Figure 16 As shown, the display panel also includes multiple virtual traces 61, which are arranged along the first direction X and extend along the second direction Y. Some of the virtual traces 61 are multiplexed as the fourth connection segment 224. In this way, the density of signal lines extending along the second direction Y in the wire-wound display area AA1 and the conventional display area AA2 can be basically the same, thereby further improving the consistency of the metal density between the wire-wound display area AA1 and the conventional display area AA2.

[0104] For example, the virtual trace 61 that is multiplexed as the fourth connection segment 224 may include the disconnected third virtual segment 613 and fourth virtual segment 614, which are multiplexed as the fourth connection segment 224 of different second connection lines 22.

[0105] For example, such as Figure 9 or Figure 11 As shown, the display panel may include a first metal layer M1, a second metal layer M2, a third metal layer M3, and a fourth metal layer M4 stacked together. A first semiconductor layer b1 may be present between the first metal layer M1 and the substrate O1. Insulating layers may be disposed between the semiconductor layer and the metal layers, as well as between different metal layers. For example, the insulating layers may include a first gate insulating layer GI1, a capacitor insulating layer IMD, a first interlayer dielectric layer ILD1, a first planarization layer PLN1, and a second planarization layer PLN2. The display panel may also include a pixel defining layer PDL.

[0106] Or, such as Figure 10 or Figure 12 As shown, relative to Figure 9 and Figure 11 , Figure 10 and Figure 12The structure shown may also include a second semiconductor layer b2, a fifth metal layer M5, a second gate insulating layer GI2, a third gate insulating layer GI3, and a second interlayer dielectric layer ILD2.

[0107] The positions of each film layer can be as follows Figures 9 to 12 As shown, it will not be elaborated further here.

[0108] For example, the first signal line 11 may be located in the third metal layer M3. The third branch line 123 may also be located in the third metal layer M3.

[0109] The first sub-line 121 and the second sub-line 122 may be located in the fourth metal layer M4. The first segment 122a and the second segment 122b of the second sub-line 122 may both be located in the fourth metal layer M4.

[0110] The first connecting segment 211 in the first connecting line 21 may be located in the third metal layer M3, and the two second connecting segments 212 in the first connecting line 21 may be located in the fourth metal layer M4.

[0111] If the connection structure 31 is a wiring structure, the connection structure 31 can be located in the fourth metal layer M4.

[0112] Virtual trace 61 can be located in the third metal layer M3.

[0113] When the third signal line 13 is a scan signal line or a light emission control signal line and is connected to a P-type transistor, the third signal line 13 may be located in the first metal layer M1. When the third signal line 13 is a scan signal line or a light emission control signal line and is connected to an N-type transistor, the third signal line 13 may be located in the fifth metal layer M5. When the third signal line 13 is a reset signal line, the third signal line 13 may be located in the second metal layer M2.

[0114] The third connecting segment 223 of the second connecting line 22 may be located in the fourth metal layer M4, and the two fourth connecting segments 224 of the second connecting line 22 may be located in the third metal layer M3.

[0115] Traces located on different metal layers can be connected vias. For example, as... Figure 7 As shown, the first connecting segment 211 and the second connecting segment 212 are located in different metal layers, and they can be connected through the first via h1.

[0116] The film positions of the signal lines in the above examples are merely examples and are not intended to limit this application.

[0117] It should be noted that the transistors in the embodiments of this application can be either N-type or P-type transistors. For N-type transistors, the on-level is high and the off-level is low. That is, when the gate potential of an N-type transistor is high, its first and second terminals are connected; when the gate potential is low, its first and second terminals are off. For P-type transistors, the on-level is low and the off-level is high. That is, when the gate potential of a P-type transistor is low, its first and second terminals are connected; when the gate potential is high, its first and second terminals are off. In specific implementation, the gate of each transistor is used as its control electrode. Furthermore, depending on the signal and type of the gate of each transistor, its first electrode can be used as the source and its second electrode as the drain, or its first electrode can be used as the drain and its second electrode as the source. No distinction is made here. In addition, the on-level and off-level in the embodiments of this application are general terms. The on-level refers to any level that can turn on the transistor, and the off-level refers to any level that can turn off / turn off the transistor.

[0118] The electrical connection described in this application can be a direct connection, i.e., a connection between two components, or an indirect connection, i.e., an indirect connection between two components that can be formed through one or more elements.

[0119] This application also provides a display device, which may include a photosensitive component and a display panel 100 of any of the above embodiments. The following description uses one embodiment of the display device as an example, in which the display device includes the display panel 100 of the above embodiments.

[0120] like Figure 17 As shown, this application embodiment also provides a display device, including a display panel 100. The display panel 100 may be the display panel 100 of one of the above embodiments. The display panel 100 has a functional area FA and a display area AA.

[0121] The display panel 100 includes a first surface S1 and a second surface S2 opposite to each other, wherein the first surface S1 is the display surface. The display device also includes a photosensitive component 200, which is located on the second surface S2 side of the display panel 100. The photosensitive component 200 corresponds to the position of the functional area FA.

[0122] The photosensitive component 200 can be an image acquisition device used to acquire external image information. In this embodiment, the photosensitive component 200 is a complementary metal-oxide-semiconductor (CMOS) image acquisition device. In other embodiments, the photosensitive component 200 can also be a charge-coupled device (CCD) image acquisition device or other forms of image acquisition device.

[0123] The embodiments described above are not exhaustive, nor do they limit the application to the specific embodiments described herein. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to effectively utilize this application and its modifications. This application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that, The display panel has a display area, which includes a wire-wound display area and a regular display area, and includes: Multiple first signal lines are located in the display area. The multiple first signal lines are arranged along a first direction and extend along a second direction, with the first direction intersecting the second direction. The second signal line, located in the display area, includes multiple first branch lines and multiple second branch lines that are electrically connected to each other. The first branch lines extend along the first direction, and the second branch lines extend along the second direction. A first connecting line, located in the wire-wound display area, includes a first connecting segment and a second connecting segment. The first connecting segment is connected to the first signal line through the second connecting segment. The first connecting segment extends along the second direction, and the second connecting segment extends along the first direction. The second connecting segment and the second branch line are located in the same metal layer. In the wire-wound display area, the second branch line includes multiple first segments that are broken at the second connecting segment. In the conventional display area, the second branch line includes second segments located on both sides of the first branch line. A connection structure is located in the conventional display area and is connected to the first branch line; A redundant structure is located in the winding display area, and the distribution density of the redundant structure is consistent with the distribution density of the connection structure. The display panel also includes multiple virtual traces, which are arranged along the first direction and extend along the second direction. Some of the virtual traces are reused as the first connection segment.

2. The display panel according to claim 1, characterized in that, The display panel further includes a functional area, the display area surrounding at least a portion of the functional area, the wired display area adjacent to the functional area, at least one first signal line including a first signal segment and a second signal segment separated by the functional area, the first connecting line including two second connecting segments, one of which is connected to the first signal segment and the first connecting segment, and the other of which is connected to the second signal segment and the first connecting segment. Alternatively, one end of the first connection segment is connected to the first signal line via the second connection segment, and the other end of the first connection segment is electrically connected to the pads of the display panel.

3. The display panel according to claim 1, characterized in that, The second connecting segment and the first branch line are located on the same metal layer, and the second connecting segment is located on the extension line of the first branch line.

4. The display panel according to claim 1, characterized in that, The second signal line also includes multiple third branches, which extend along the second direction and are located in different metal layers from the first branch.

5. The display panel according to claim 1, characterized in that, The second signal line is either a power signal line or a reset signal line.

6. The display panel according to claim 4, characterized in that, The connection structure is connected to one of the second branch line and the third branch line.

7. The display panel according to claim 4, characterized in that, The orthographic projection of the third branch line on the substrate of the display panel at least partially overlaps with the orthographic projection of the second branch line on the substrate, and the orthographic projection of the redundant structure on the substrate of the display panel at least partially overlaps with the orthographic projection of the second connecting segment on the substrate.

8. The display panel according to claim 1, characterized in that, The display area includes an array of pixel circuits, and the orthographic projection of the second connection segment on the substrate of the display panel does not overlap with the orthographic projection of the pixel circuits on the substrate.

9. The display panel according to claim 1, characterized in that, The display panel includes a light-emitting element, which includes a stacked first electrode, a light-emitting layer, and a second electrode. The orthographic projection of the opposite ends of the second connecting segment and the first branch line on the substrate of the display panel at least partially overlaps with the orthographic projection of the first electrode on the substrate.

10. The display panel according to claim 4, characterized in that, The first signal line and the third branch line are located in the same metal layer.

11. The display panel according to any one of claims 1-10, characterized in that, The connection structure is a connection trace extending along the second direction, and the connection structure and the second segment are located in the same metal layer, and the connection structure and the second segment are an integral structure; The redundant structure is a redundant trace extending along the second direction.

12. The display panel according to claim 11, characterized in that, The redundant structure extends for a length of d1 in the second direction, and the distance between the two first segments on both sides of the second connecting segment in the second direction is d2, where d1 = d2.

13. The display panel according to claim 11, characterized in that, The distance between the redundant structure and the first segment in the first direction is greater than 0.

14. The display panel according to claim 11, characterized in that, The orthographic projection of the redundant structure onto the substrate of the display panel does not overlap with the orthographic projection of the first signal line onto the substrate.

15. The display panel according to claim 11, characterized in that, The redundant structure and the second connecting segment are located on the same metal layer, and the redundant structure and the second connecting segment are cross-connected. The width of the redundant structure in the first direction is equal to the width of the connecting structure in the first direction. Alternatively, the metal layer containing the redundant structure is located between the metal layer containing the second connecting segment and the substrate of the display panel, and the width of the redundant structure in the first direction is greater than the width of the connecting structure in the first direction.

16. The display panel according to any one of claims 1-10, characterized in that, The second signal line also includes multiple third branches, which extend along the second direction and are located in different metal layers from the first branch. The connection structure is a connecting via connecting the first branch line and the third branch line, and the redundancy structure is a redundant via.

17. The display panel according to claim 16, characterized in that, One end of the redundant structure is connected to the second connecting segment, and the other end of the redundant structure is suspended.

18. The display panel according to claim 16, characterized in that, In the second direction, the distance between the two first segments on both sides of the second connecting segment is d2, and the distance between the two second segments on both sides of the first dividing line is d3, where d2=d3.

19. The display panel according to claim 1, characterized in that, The virtual trace is located on the same metal layer as the first signal line.

20. The display panel according to claim 1, characterized in that, In the first direction, N first signal lines are distributed between each pair of adjacent virtual traces, where N is an integer greater than 1.

21. The display panel according to claim 19, characterized in that, The display panel further includes a functional area surrounding at least a portion of the functional area. The display area includes a first light-emitting element, and the functional area includes a second light-emitting element. The display area includes a plurality of pixel circuits and a plurality of virtual circuits arranged in an array. The pixel circuits are connected to the first light-emitting element, and a portion of the virtual circuits are connected to the second light-emitting element.

22. The display panel according to claim 21, characterized in that, The first signal line is connected to the pixel circuit, the virtual trace is connected to the virtual circuit, and the orthographic projection of the first signal line on the substrate of the display panel at least partially overlaps with the orthographic projection of the pixel circuit on the substrate, and the orthographic projection of the virtual trace on the substrate at least partially overlaps with the orthographic projection of the virtual circuit on the substrate.

23. The display panel according to claim 21, characterized in that, The virtual trace reused as the first connection segment includes a first virtual segment and a second virtual segment that are disconnected, and the first virtual segment is reset as the first connection segment.

24. The display panel according to claim 1, characterized in that, The display panel further includes a functional area surrounding at least a portion of the functional area, and the display panel also includes: Multiple third signal lines, the third signal lines extending along the first direction, the multiple third signal lines arranged along the second direction, and at least one of the third signal lines including a third signal segment and a fourth signal segment separated by the functional area; The second connecting line, located in the winding display area, includes a third connecting segment and two fourth connecting segments. One of the fourth connecting segments is connected to the third signal segment and the third connecting segment, and the other fourth connecting segment is connected to the fourth signal segment and the third connecting segment. The third connecting segment extends along the first direction, and the fourth connecting segment extends along the second direction. The third connecting segment and the first branch line are located on the same metal layer, and the third connecting segment is located on the extension line of the first branch line.

25. The display panel according to claim 24, characterized in that, The first signal line is a data signal line, the second signal line is a power signal line, and the third signal line is any one of a scan signal line, a light emission control signal line, and a reset signal line. The second connecting line is located on the side of the first connecting line away from the functional area.

26. The display panel according to claim 24, characterized in that, The display panel also includes multiple virtual traces, which are arranged along the first direction and extend along the second direction. Some of the virtual traces are reused as the fourth connection segment.

27. The display panel according to claim 26, characterized in that, The virtual trace reused as the fourth connection segment includes a disconnected third virtual segment and a fourth virtual segment, which are reused as a fourth connection segment different from the second connection line.

28. A display device, characterized in that, Includes the display panel according to any one of claims 1 to 27.

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