Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device, which relate to the technical field of display and are used for improving display quality. The display panel comprises a display area and a fan-out area arranged along a first direction, the fan-out area comprises a first wiring area and a second wiring area arranged along a second direction, and the second direction intersects the first direction. The display panel comprises a plurality of first fan-out lines arranged in the first wiring area, and a plurality of second fan-out lines arranged in the second wiring area. The first fan-out lines extend from a side of the first wiring area close to the display area to a direction away from the display area. The second fan-out lines extend from a side of the second wiring area close to the display area to a direction away from the display area, then extend to a direction close to the display area, and then extend to a direction away from the display area. The width of at least part of the second fan-out lines is greater than the width of the first fan-out lines. The display panel is used for displaying images.

Description

Technical Field

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

[0002] Flat panel displays are widely used in mobile phones, tablets, laptops, automotive displays, and televisions. The fanout wiring in the panel typically uses minimum spacing wiring, employing a single line width and spacing to form a triangular wiring area.

[0003] However, due to the size limitation of the bottom bezel, the linewidth of the fan-out lines in the fan-out area is small and the resistance is large. When the number of integrated circuits (ICs) is small and the display panel size is large, it is difficult to meet the performance requirements, resulting in a reduction in display quality. Utility Model Content

[0004] This application discloses a display panel and display device, which aim to improve display quality.

[0005] To achieve the above objectives, embodiments of this application provide the following technical solutions: On one hand, a display panel is provided, comprising a display area and a fan-out area arranged along a first direction. The fan-out area includes a first wiring area and a second wiring area arranged along a second direction, which intersects the first direction. The display panel includes a plurality of first fan-out lines disposed in the first wiring area and a plurality of second fan-out lines disposed in the second wiring area. The first fan-out lines extend from the side of the first wiring area near the display area in a direction away from the display area. The second fan-out lines extend from the side of the second wiring area near the display area in a direction away from the display area, then extend again in a direction near the display area, and then extend again in a direction away from the display area. At least a portion of the width of the second fan-out lines is greater than the width of the first fan-out lines.

[0006] In the embodiments of this application, the display panel has a display area and a fan-out area arranged along a first direction. The fan-out area includes a first wiring area and a second wiring area arranged along a second direction, which intersects the first direction. Multiple first fan-out lines of the first wiring area extend from the side of the first wiring area closest to the display area in a direction away from the display area. The routing of the first fan-out lines relative to the display area is designed to be recessed.

[0007] Multiple second-fan outgoing lines from the second wiring area extend from the side of the second wiring area closest to the display area, first moving away from the display area, then moving closer to the display area, and then moving away from the display area again. The routing design of the second-fan outgoing lines relative to the display area is: first sinking, then rising, and then sinking again. This routing design is called "sunken wiring" or "wide-wing wiring." At least a portion of the width of the second-fan outgoing lines is greater than the width of the first-fan outgoing lines.

[0008] Understandably, compared to the first fan-out cable's continuous downward routing design, the second fan-out cable's initial downward, then upward, and then downward routing design utilizes the space outside the second wiring area, increasing the area of ​​the second wiring area and the second fan-out cable. Furthermore, compared to the width of the first fan-out cable, at least some segments of the second fan-out cable can be wider, thereby reducing its resistance and improving the charging rate of the display panel. Moreover, reducing the resistance of the second fan-out cable helps to minimize the resistance difference between the second and first fan-out cables, thus improving the uniformity of the signal transmitted in the fan-out area and ultimately enhancing the display quality of the display panel.

[0009] In some embodiments, the second fan-out line includes a first segment, a second segment, and a third segment connected in sequence. The first segment extends from the side of the second wiring area closer to the display area and moves away from the display area. The second segment extends closer to the display area. The third segment extends away from the display area. The width of both the first segment and the second segment is greater than the width of the first fan-out line.

[0010] In some embodiments, the width of the third line segment is equal to the width of the first fan-out line.

[0011] In some embodiments, the fan-out area includes a boundary near the display area, and the boundary includes a boundary point between the first wiring area and the second wiring area. The second wiring area includes a first sub-wiring area, a second sub-wiring area, and a third sub-wiring area. First segments of multiple second fan-out lines are disposed in the first sub-wiring area, second segments of multiple second fan-out lines are disposed in the second sub-wiring area, and third segments of multiple second fan-out lines are disposed in the third sub-wiring area. The perpendicular distance between the boundary point and the outermost first segment of the first sub-wiring area is greater than the perpendicular distance between the boundary point and the outermost third segment of the third sub-wiring area. The perpendicular distance between the boundary point and the outermost second segment of the second sub-wiring area is greater than the perpendicular distance between the boundary point and the outermost third segment of the third sub-wiring area.

[0012] In some embodiments, the vertical distance between the dividing point and the outermost first line segment of the first sub-wiring area is equal to the vertical distance between the dividing point and the outermost second line segment of the second sub-wiring area.

[0013] In some embodiments, the first line segment and the second line segment have a connection point, and the line connecting the dividing point and the connection point is parallel to the first direction.

[0014] In some embodiments, the second fan-out line includes a first segment, a fourth segment, a second segment, and a third segment connected in sequence. The first segment extends from the side of the second wiring area closer to the display area and away from the display area. The fourth segment extends along a second direction. The second segment extends closer to the display area. The third segment extends away from the display area. The widths of the first segment, the second segment, and the fourth segment are all greater than the width of the first fan-out line.

[0015] In some embodiments, the second fan-out line includes a first segment, a fifth segment, a fourth segment, a second segment, and a third segment connected in sequence. The first segment extends from the side of the second wiring area closer to the display area and away from the display area. The fifth segment extends away from the display area. The fourth segment extends along a second direction. The second segment extends closer to the display area. The third segment extends away from the display area. The widths of the first segment, the second segment, the fourth segment, and the fifth segment are all greater than the width of the first fan-out line.

[0016] In some embodiments, the second fan-out line is curved and protrudes outward in a direction away from the display area.

[0017] In some embodiments, both the first and second fan-out lines are data fan-out lines. Alternatively, both the first and second fan-out lines are touch fan-out lines.

[0018] In some embodiments, the display panel includes a substrate, and a first conductive layer and a second conductive layer stacked on the substrate. The first fan-out line and the second fan-out line are both data fan-out lines and are both located in the first conductive layer. The display panel also includes a third fan-out line and a fourth fan-out line located in the second conductive layer. The third fan-out line and the fourth fan-out line are both touch fan-out lines and are both located in the second conductive layer. The fan-out area also includes a third wiring area and a fourth wiring area arranged along a second direction. The third fan-out line is disposed in the third wiring area, and the fourth fan-out line is disposed in the fourth wiring area. The third fan-out line extends from the side of the third wiring area near the display area in a direction away from the display area. The fourth fan-out line extends from the side of the fourth wiring area near the display area in a direction away from the display area, then extends again in a direction near the display area, and then extends again in a direction away from the display area. The width of at least a portion of the fourth fan-out line is greater than the width of the third fan-out line.

[0019] In some embodiments, the orthographic projection of the fourth fan-out line onto the substrate at least partially overlaps with the orthographic projection of the second fan-out line onto the substrate. The extension directions of the fourth fan-out line and the second fan-out line intersect.

[0020] On the other hand, a display device is provided, which includes the display panel in any of the above embodiments and a controller electrically connected to the display panel.

[0021] The above-described display device has the same structure and beneficial technical effects as the display panel provided in some of the above embodiments, and will not be described again here. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this application, the accompanying drawings used in some embodiments of this application will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not actual dimensions of the products or actual processes of the methods involved in the embodiments of this application.

[0023] Figure 1 A structural diagram of the display device provided in the embodiments of this application; Figure 2 for Figure 1 A magnified view of a portion of the film layer on the display panel at point P; Figure 3 for Figure 2 A geometric diagram of each point on the display panel; Figure 4 A partial magnified view of a portion of the film layer of another display panel provided in this application at point P; Figure 5 for Figure 4 A geometric diagram of each point on the display panel; Figure 6 A partial magnified view of a portion of the film layer of another display panel provided in this application at point P; Figure 7 for Figure 6 A geometric diagram of each point on the display panel; Figure 8 A partial enlarged view of a portion of the film layer of another display panel provided in this application at point P; Figure 9 A partial enlarged view of a portion of the film layer of another display panel provided in this application at point P; Figure 10 A partial enlarged view of a portion of the film layer of another display panel provided in this application at point P; Figure 11 A magnified view of a portion of the film layer of another display panel provided in this application at point P. Detailed Implementation

[0024] The technical solutions in some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application are within the scope of protection of this application.

[0025] Unless the context otherwise requires, throughout the specification and claims, the term “comprising” is interpreted as open and encompassing, that is, “including, but not limited to”.

[0026] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this application, unless otherwise stated, "a plurality of" means two or more.

[0027] In describing some embodiments, the term "connection" and its derivative expressions may be used. The term "connection" should be interpreted broadly; for example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. For example, in describing some embodiments, the term "connection" may be used to indicate that two or more components have direct physical or electrical contact with each other.

[0028] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0029] As used herein, “parallel,” “perpendicular,” and “equal” include the described situation and situations that are similar to the described situation, within an acceptable deviation range, which is determined by those skilled in the art taking into account the measurement under discussion and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, “parallel” includes absolute parallelism and approximate parallelism, where an acceptable deviation range for approximate parallelism may be, for example, within 5°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where an acceptable deviation range for approximate perpendicularity may also be, for example, within 5°; “equal” includes absolute equality and approximate equality, where an acceptable deviation range for approximate equality may be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0030] It should be understood that when a layer or element is referred to as being on another layer or substrate, it can mean that the layer or element is directly on the other layer or substrate, or that there is an intermediate layer between the layer or element and the other layer or substrate.

[0031] This document describes exemplary embodiments with reference to cross-sectional views, which are intended as idealized exemplary drawings. In the drawings, the thickness of the layers and the area of ​​the regions are enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include shape deviations caused, for example, by manufacturing processes. For example, etched areas shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the areas of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0032] On one hand, embodiments of this application provide a display device, which can be a thin-film transistor liquid crystal display (TFT-LCD). Figure 1 This is a structural diagram of a display device provided in an embodiment of this application.

[0033] See Figure 1 The display device 100 includes a display panel 10 and a controller 20 electrically connected to the display panel 10. The controller 20 can be located on the non-display side of the display panel 10 and is used to control the display panel 10 to display images.

[0034] The aforementioned display device 100 can be any device that displays images, whether moving (e.g., video) or fixed (e.g., still images), and whether it contains text or images. More specifically, the embodiments described are contemplated to be implemented in or associated with a variety of electronic devices, such as (but not limited to) mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays (e.g., odometer displays, etc.), navigators, cockpit controllers and / or displays, displays of camera views (e.g., displays of rearview cameras in vehicles), electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging, aesthetic structures (e.g., displays of images of a piece of jewelry), laptops, and touch panel computers (TPCs), etc.

[0035] On the other hand, this application also provides a display panel. For example, the display panel provided by this application can be an On-Cell display panel with the touch layer made on the surface of the display panel, or an In-Cell display panel with the touch electrodes directly embedded inside the display panel.

[0036] See also Figure 1 The display panel 10 includes an active area (AA) AA and a fanout area BB arranged along a first direction Y. The fanout area BB includes a first wiring area 1 and a second wiring area 2 arranged along a second direction X. The second direction X intersects the first direction Y. The embodiments of this application are described with the second direction X being perpendicular to the first direction Y as an example.

[0037] For example, the display panel 10 also includes an integrated circuit (IC) 30 disposed in the fan-out area BB. The integrated circuit 30 is used to transmit signals to the display panel 10 to control the image display of the display panel 10. For example, the integrated circuit 30 can be a touch IC or a source driver IC.

[0038] For example, see [link to previous article] Figure 1 The display panel 10 also includes a center line S parallel to the first direction Y, with the first wiring area 1 located on the side of the second wiring area 2 closer to the center line S. Along the second direction X, the two first wiring areas 1 and the two second wiring areas 2 are respectively disposed on opposite sides of the center line S. It can be understood that the first wiring area 1 is closer to the center line S, therefore the first wiring area 1 can be called the "near-end region," and the second wiring area 2 can be called the "far-end region." Furthermore, the length of the fan-out line in the near-end region is shorter than the length of the fan-out line in the far-end region; therefore, the resistance of the fan-out line in the second wiring area 2 is larger.

[0039] Figure 2 for Figure 1 A magnified view of a portion of the film layer on the display panel at point P.

[0040] See Figure 2 The display panel 10 includes multiple first fan-out lines 3 disposed in the first wiring area 1 and multiple second fan-out lines 4 disposed in the second wiring area 2. For example, the first fan-out lines 3 and the second fan-out lines 4 can be disposed on the same layer, or they can be located on different conductive layers. For instance, the first fan-out line 3 can be a data line or a touch signal line. The second fan-out line 4 can be a data fan-out line or a touch fan-out line.

[0041] The first fan-out line 3 extends from the side of the first wiring area 1 closest to the display area AA, and moves away from the display area AA. For example, the display panel 10 also includes a plurality of pins 80, and the opposite ends of the first fan-out line 3 are electrically connected to the respective pins 80. For example, the multiple first fan-out lines 3 are bent once in the first wiring area 1 to achieve convergence and fan-out.

[0042] See also Figure 2 The second fan-out line 4 extends from the side of the second wiring area 2 closest to the display area AA, away from the display area AA, then back towards the display area AA, and then away from the display area AA again. For example, multiple second fan-out lines 4 bend at least twice in the second wiring area 2 to achieve convergence and fan-out.

[0043] The width of at least a portion of the second outgoing line 4 is greater than the width of the first outgoing line 3. By widening at least a portion of the segments of multiple second outgoing lines 4, the resistance of these segments is reduced, thereby reducing the resistance of the second outgoing line 4.

[0044] Understandably, reducing the resistance of the fan-out line in the far-end region reduces the resistance difference between the fan-out lines in the far-end and near-end regions. Both the first fan-out line 3 and the second fan-out line 4 receive electrical signals from the integrated circuit 30. Due to the reduced resistance difference between the two, the transmission losses of the electrical signals on the first fan-out line 3 and the second fan-out line 4 are more similar, which helps to improve signal uniformity.

[0045] In the display panel 10 provided in the embodiments of this application, the display area AA and the fan-out area BB are arranged along the first direction Y. The fan-out area BB includes a first wiring area 1 and a second wiring area 2 arranged along the second direction X, and the second direction X intersects the first direction Y. Multiple first fan-out lines 3 of the first wiring area 1 extend from the side of the first wiring area 1 close to the display area AA in a direction away from the display area AA. The routing design of the first fan-out lines 3 relative to the display area AA is that they are always sunken.

[0046] Multiple second-fan outgoing lines 4 from the side of the second wiring area 2 closest to the display area AA extend first away from the display area AA, then towards the display area AA, and then away from the display area AA again. The routing design of the second-fan outgoing lines 4 relative to the display area AA is: first sinking, then rising, and then sinking again. This routing design is called "sunken routing" or "wide-wing routing". The width of at least a portion of the second-fan outgoing lines 4 is greater than the width of the first-fan outgoing lines 3.

[0047] Understandably, compared to the first exit cable 3, which is designed to sink continuously, the second exit cable 4 sinks, then rises, and then sinks again, allowing the side of the second wiring area 2 (for example, Figure 2 The space outside the lower right side of the second wiring area 2 is utilized, increasing the wiring area of ​​the second wiring area 2 and the second fan-out line 4. Based on this, compared to the width of the first fan-out line 3, the width of at least some segments of the second fan-out line 4 can be increased, thereby reducing the resistance of the second fan-out line 4 and improving the charging rate of the display panel 10. Furthermore, by reducing the resistance of the second fan-out line 4, the resistance difference between the second fan-out line 4 and the first fan-out line 3 is reduced, thereby improving the uniformity of the signal transmitted in the fan-out area BB, and ultimately improving the display quality of the display panel 10.

[0048] In some embodiments, see Figure 2 The second outgoing line 4 comprises a first line segment 41, a second line segment 42, and a third line segment 43 connected in sequence. It can be understood that points E and G are the two inflection points of the second outgoing line 4, and the second outgoing line 4 can be divided into the first line segment 41, the second line segment 42, and the third line segment 43 based on points E and G.

[0049] The first segment 41 extends from the side of the second wiring area 2 closest to the display area AA, and moves away from the display area AA; that is, the first segment 41 is a recessed segment. The second segment 42 extends towards the display area AA; that is, the second segment 42 is an ascending segment. The third segment 43 extends away from the display area AA; that is, the third segment 43 is also a recessed segment. The width of both the first segment 41 and the second segment 42 is greater than the width of the first fan-out line 3.

[0050] See also Figure 2 It is understandable that widening the first segment 41 and the second segment 42, that is, widening most of the width of each second fan-out line 4, effectively reduces the resistance of the second fan-out line 4. Taking the outermost second fan-out line 4 as an example, the outermost second fan-out line 4 is the longest and has the greatest resistance. After widening the first segment 41 and the second segment 42, its resistance is reduced most significantly.

[0051] See Figure 1 and Figure 2 During the process of transmitting the signal to the far end of the display area AA (the side of the display area AA away from the fan-out area BB) via the far-end fan-out line (second fan-out line 4), the signal loss is reduced due to the reduced resistance of the second fan-out line 4, which can also improve the uneven display phenomenon at the far end of the display area AA.

[0052] In some embodiments, see Figure 2The width of the third segment 43 is equal to the width of the first fan-out line 3. It can be understood that since the width of the third segment 43 is equal to the width of the first fan-out line 3, and the widths of the first segment 41 and the second segment 42 are both greater than the width of the first fan-out line 3, the fan-out line of the second wiring area 2 is wider than that of the fan-out line of the first wiring area 1. This reduces the resistance difference between the fan-out lines of the second wiring area 2 and the first wiring area 1, thereby improving the uniformity of signal transmission within the second wiring area 2 and the first wiring area 1. This is beneficial for improving the display uniformity of the display panel 10, and thus improving the display quality of the display panel 10.

[0053] In some embodiments, see Figure 1 The fan-out area BB includes the boundary L on the side closest to the display area AA, and the boundary L includes the dividing point H between the first wiring area 1 and the second wiring area 2.

[0054] See Figure 2 The second wiring area 2 includes a first sub-wiring area 21, a second sub-wiring area 22, and a third sub-wiring area 23. The first segment 41 of multiple second fan-outgoing lines 4 is located in the first sub-wiring area 21, the second segment 42 of multiple second fan-outgoing lines 4 is located in the second sub-wiring area 22, and the third segment 43 of multiple second fan-outgoing lines 4 is located in the third sub-wiring area 23. It can be understood that, along the direction from the second wiring area 2 to the first wiring area 1, the first sub-wiring area 21, the second sub-wiring area 22, and the third sub-wiring area 23 are arranged sequentially.

[0055] Figure 3 for Figure 2 A geometric diagram of each point on the display panel.

[0056] Figure 3 In the diagram, line segment AB represents the left boundary of the first wiring area 1, line segment AC represents the upper boundary of the first wiring area 1 and the second wiring area 2, the broken line HMN represents the dividing line between the first wiring area 1 and the second wiring area 2, HMNDE represents the third sub-wiring area 23, HEG represents the second sub-wiring area 22, and HGC represents the first sub-wiring area 21.

[0057] The extension of DE passes through point C, MH∥DC, and MN∥AB.

[0058] CG represents the outermost first segment 41 of the first sub-routing area 21, EG represents the outermost second segment 42 of the second sub-routing area 22, and ED represents the outermost third segment 43 of the third sub-routing area 23.

[0059] See Figure 2 and Figure 3The perpendicular distance d1 between the boundary point H and the outermost first line segment 41 of the first sub-wiring area 21 is greater than the perpendicular distance d3 between the boundary point H and the outermost third line segment 43 of the third sub-wiring area 23. The perpendicular distance d2 between the boundary point H and the outermost second line segment 42 of the second sub-wiring area 22 is greater than the perpendicular distance d3 between the boundary point H and the outermost third line segment 43 of the third sub-wiring area 23.

[0060] It is understandable that d1 > d3 and d2 > d3, meaning that along the direction parallel to the width of the fan-out line, the widths of the first sub-wiring area 21 and the second sub-wiring area 22 are both greater than the width of the third sub-wiring area 23. By widening the areas of the first sub-wiring area 21 and the second sub-wiring area 22, the first line segment 41 and the second line segment 42 have more wiring space, which facilitates the widening of the first line segment 41 and the second line segment 42, thereby reducing the overall resistance of the second fan-out line 4.

[0061] In some embodiments, see Figure 2 and Figure 3 The perpendicular distance d1 between the dividing point H and the outermost first line segment 41 of the first sub-wiring area 21 is equal to the perpendicular distance d2 between the dividing point H and the outermost second line segment 42 of the second sub-wiring area 22.

[0062] It is understandable that line segment GH can be the angle bisector of ∠EGC. Therefore, the distance d2 from point H to EG is equal to the distance d1 from point H to GC. That is, along the direction parallel to the width of the fan-out line, the widths of the first sub-routing area 21 and the second sub-routing area 22 are equal. Since the number of first line segments 41 and second line segments 42 is the same, the width periods (Pitch) of the first sub-routing area 21 and the second sub-routing area 22 are equal, facilitating process monitoring of the first sub-routing area 21 and the second sub-routing area 22. Here, "Pitch" refers to the ratio of the area width to the number of fan-out lines.

[0063] See also Figure 2 The width period of both the first sub-routing area 21 and the second sub-routing area 22 is greater than that of the first routing area 1. The first sub-routing area 21 and the second sub-routing area 22 utilize more routing space to widen the first segment 41 and the second segment 42. For example, taking the outermost second fan-outline DEGC of the second sub-routing area 22 as an example, compared to EG and GC not being widened, in the embodiment of this application where EG and GC are widened, the resistance of DEGC can decrease by approximately 50%.

[0064] In some embodiments, see Figure 2 and Figure 3The first line segment 41 and the second line segment 42 have a connection point G, and the line connecting the dividing point H and the connection point G is parallel to the first direction Y. For example, in the process, ∠EGC is close to 180°, that is, EGC is close to horizontal, and line segment GH is the angle bisector of ∠EGC, meaning line segment GH is close to vertical. Having line segment GH vertical is beneficial for subsequent process drawing and process design.

[0065] Figure 4 A partial magnified view of a portion of the film layer of another display panel provided in this application at point P; Figure 5 for Figure 4 A geometric diagram of each point on the display panel.

[0066] In some embodiments, see Figure 4 The second outgoing line 4 includes a first segment 41, a fourth segment 44, a second segment 42, and a third segment 43 connected in sequence. For example, the second wiring area 2 also includes a fourth sub-wiring area 24, in which the fourth segment 44 is disposed.

[0067] See Figure 5 Line segment AB represents the left boundary of the first wiring area 1, line segment AC represents the upper boundary of the first wiring area 1 and the second wiring area 2, and the broken line HMN represents the boundary line between the first wiring area 1 and the second wiring area 2. HMNDE represents the third sub-wiring area 23, HEG represents the second sub-wiring area 22, HGF represents the fourth sub-wiring area 24, and HFC represents the first sub-wiring area 21. The extension of DE passes through point C, and GF∥AC.

[0068] CF represents the outermost first segment 41 of the first sub-routing area 21, GF represents the outermost fourth segment 44 of the fourth sub-routing area 24, EG represents the outermost second segment 42 of the second sub-routing area 22, and ED represents the outermost third segment 43 of the third sub-routing area 23.

[0069] It is understandable that points E, G, and F are the three inflection points of the second outgoing line 4. Based on points E, G, and F, the second outgoing line 4 can be divided into the first segment 41, the fourth segment 44, the second segment 42, and the third segment 43.

[0070] See Figure 4 and Figure 5The first segment 41 extends from the side of the second wiring area 2 closest to the display area AA, moving away from the display area AA; that is, the first segment 41 is a recessed segment. The fourth segment 44 extends along the second direction X; that is, the fourth segment 44 is a horizontal segment. The second segment 42 extends towards the display area AA; that is, the second segment 42 is an upward segment. The third segment 43 extends away from the display area AA; that is, the third segment 43 is also a recessed segment. The widths of the first segment 41, the second segment 42, and the fourth segment 44 are all greater than the width of the first fan-out line 3.

[0071] It is understandable that the first segment 41, the fourth segment 44, and the second segment 42 are widened, that is, most of the width of each second fan-out line 4 is widened, thereby further reducing the resistance of the second fan-out line 4.

[0072] For example, the fan-out area BB also includes a Gate Driver on Array (GOA) circuit and a Multiplexer (MUX) signal line. The GOA is typically arranged along the first direction Y, and the MUX signal line is typically arranged along the second direction X. The horizontally extending fourth segment 44 is the lowest segment of the second fan-out line 4. By setting the fourth segment 44 horizontally, the mutual inductance or capacitance between the second fan-out line 4 and the GOA and MUX signal lines can be reduced, thereby preventing electrical interference from the second fan-out line 4 to the GOA and MUX signal lines and improving the display quality of the display panel 10.

[0073] For example, see [link to previous article] Figure 4 and Figure 5 Points H, G, and F can all be arbitrarily changed. The resistance of the second outgoing line 4 can be measured by enumeration when points H, G, and F are located in different positions, so as to obtain the minimum resistance of the second outgoing line 4 under different application scenarios.

[0074] For example, taking the outermost second exit line 4 as an example, the outermost second exit line 4 is the longest and has the highest resistance. Widening the first segment 41, the fourth segment 44, and the second segment 42 results in the most significant reduction in resistance. For example, compared to... Figure 2 The structure of the corresponding embodiment, Figure 4 The resistance of the outermost second fan-outline 4 can be reduced by about 10%.

[0075] Figure 6 A partial magnified view of a portion of the film layer of another display panel provided in this application at point P; Figure 7 for Figure 6 A geometric diagram of each point on the display panel.

[0076] In some embodiments, see Figure 6 The second outgoing line 4 includes a first segment 41, a fifth segment 45, a fourth segment 44, a second segment 42, and a third segment 43 connected in sequence. For example, the second wiring area 2 also includes a fifth sub-wiring area 25, in which the fifth segment 45 is disposed.

[0077] See Figure 7 Line segment AB represents the left boundary of the first wiring area 1, line segment AC represents the upper boundary of the first wiring area 1 and the second wiring area 2, and the broken line HMN represents the dividing line between the first wiring area 1 and the second wiring area 2. HMNDE represents the third sub-wiring area 23, HEG represents the second sub-wiring area 22, HGF represents the fourth sub-wiring area 24, HFK represents the fifth sub-wiring area 25, and HKC represents the first sub-wiring area 21.

[0078] CK represents the outermost first segment 41 of the first sub-routing area 21, KF represents the outermost fifth segment 45 of the fifth sub-routing area 25, GF represents the outermost fourth segment 44 of the fourth sub-routing area 24, EG represents the outermost second segment 42 of the second sub-routing area 22, and ED represents the outermost third segment 43 of the third sub-routing area 23.

[0079] It is understandable that points E, G, F, and K are the four inflection points of the second outgoing line 4. Based on points E, G, F, and K, the second outgoing line 4 can be divided into the first segment 41, the fifth segment 45, the fourth segment 44, the second segment 42, and the third segment 43.

[0080] See also Figure 6 and Figure 7 The first segment 41 extends from the side of the second wiring area 2 closest to the display area AA, moving away from the display area AA; that is, the first segment 41 is a recessed segment. The fifth segment 45 extends away from the display area AA; that is, the fifth segment 45 is also a recessed segment. The fourth segment 44 extends along the second direction X; that is, the fourth segment 44 is a horizontal segment. The second segment 42 extends towards the display area AA; that is, the second segment 42 is an upward segment. The third segment 43 extends away from the display area AA; that is, the third segment 43 is also a recessed segment. The widths of the first segment 41, the second segment 42, the fourth segment 44, and the fifth segment 45 are all greater than the width of the first fan-out line 3.

[0081] It is understandable that the first segment 41, the fifth segment 45, the fourth segment 44, and the second segment 42 are widened, that is, most of the width of each second fan-out line 4 is widened, thereby further reducing the resistance of the second fan-out line 4.

[0082] Figure 8A magnified view of a portion of the film layer of another display panel provided in this application at point P.

[0083] In some embodiments, see Figure 8 The second fan-out line 4 is curved, and the second fan-out line 4 protrudes outward in the direction away from the display area AA.

[0084] It is understandable that, based on the discussion in the above embodiments, the more segments the second fan-out line 4 has, the larger the proportion of the widened portion of the second fan-out line 4, and thus the smaller the overall resistance of the second fan-out line 4. Ideally, the resistance of the second fan-out line 4 is minimized when the widened portion of the fan-out line in the second fan-out line 4 is a curve. Setting the second fan-out line 4 as a convex curve can minimize the resistance of the second fan-out line 4.

[0085] In some embodiments, see Figures 2-8 Both the first fan-out line 3 and the second fan-out line 4 are data fan-out lines, transmitting data signals. By widening a portion of the second fan-out line 4, its resistance is reduced, thereby lowering data signal loss and improving the display quality of the display panel 10.

[0086] For example, see Figures 1-8 When the display panel 10 is a panel without touch function, or an On-Cell panel with touch function, the integrated circuit 30 is a source driver IC, and the integrated circuit 30 transmits data signals to the first fan-out line 3 and the second fan-out line 4.

[0087] Or see Figures 1-8 Both the first fan-out line 3 and the second fan-out line 4 are touch-sensitive fan-out lines, transmitting touch signals. By widening a portion of the second fan-out line 4, its resistance is reduced, thereby lowering the loss of touch signals and improving the display quality of the display panel 10.

[0088] For example, see Figures 1-8 When the display panel 10 is an In-Cell panel, the integrated circuit 30 is a touch IC, and the integrated circuit 30 transmits touch signals to the first fan-out line 3 and the second fan-out line 4.

[0089] For example, see Figure 1When the display panel 10 is an In-Cell panel, the integrated circuit 30 needs to provide not only data signals but also touch signals. Furthermore, the fan-out lines used to transmit data signals and the fan-out lines used to transmit touch signals are on different layers. If the resistance of the fan-out line used to transmit data signals is high, at least a portion of the fan-out line can be widened to reduce its resistance. Similarly, if the resistance of the fan-out line used to transmit touch signals is high, at least a portion of the fan-out line can be widened to reduce its resistance.

[0090] Figure 9 A partial enlarged view of a portion of the film layer of another display panel provided in this application at point P; Figure 10 A magnified view of a portion of the film layer of another display panel provided in this application at point P.

[0091] See Figure 9 and Figure 10 When the display panel 10 is an In-Cell panel, the fan-out line for transmitting data signals is located in the first conductive layer M1, and the fan-out line for transmitting touch signals is located in the second conductive layer M2. The second conductive layer M2 is located above the first conductive layer M1.

[0092] For example, see Figure 9 When the resistance of the fan-out line used to transmit data signals is high, at least a portion of the fan-out line can be widened. That is, the first fan-out line 3 and the second fan-out line 4 are located in the first conductive layer M1, and at least a portion of the second fan-out line 4 is widened, thereby reducing the resistance of the second fan-out line 4.

[0093] For example, see Figure 10 When the resistance of the fan-out line used to transmit touch signals is high, at least a portion of the fan-out line can be widened. That is, the first fan-out line 3 and the second fan-out line 4 are located in the second conductive layer M2, and at least a portion of the second fan-out line 4 is widened, thereby reducing the resistance of the second fan-out line 4.

[0094] Figure 11 A magnified view of a portion of the film layer of another display panel provided in this application at point P.

[0095] In some embodiments, see Figure 11 The display panel 10 includes a substrate 6, and a first conductive layer M1 and a second conductive layer M2 stacked on the substrate 6. For example, the first conductive layer M1 may be located on the side of the second conductive layer M2 closer to the substrate 6.

[0096] The first fan-out line 3 and the second fan-out line 4 are both data fan-out lines and are located in the first conductive layer M1. The display panel 10 also includes a third fan-out line 73 and a fourth fan-out line 74 located in the second conductive layer M2. The third fan-out line 73 and the fourth fan-out line 74 are both touch fan-out lines and are located in the second conductive layer M2. It can be understood that the touch fan-out lines are located above the data fan-out lines compared to the substrate 6.

[0097] See Figure 1 and Figure 11 The fan-out area BB also includes a third wiring area 83 and a fourth wiring area 84 arranged along the second direction X. The third fan-out line 73 is located in the third wiring area 83, and the fourth fan-out line 74 is located in the fourth wiring area 84.

[0098] The third outgoing line 73 extends from the side of the third wiring area 83 closest to the display area AA, and moves away from the display area AA. The fourth outgoing line 74 extends from the side of the fourth wiring area 84 closest to the display area AA, moves away from the display area AA, then moves closer to the display area AA, and then moves away from the display area AA again. For example, both the fourth outgoing line 74 and the second outgoing line 4 undergo at least two bends.

[0099] At least a portion of the width of the fourth fan-out line 74 is greater than the width of the third fan-out line 73. By widening at least a portion of the segments of the multiple fourth fan-out lines 74, the resistance of these segments is reduced, thereby decreasing the resistance of the fourth fan-out line 74. This reduced resistance lowers the loss of the touch signal transmitted through the fourth fan-out line 74, thus improving the touch accuracy of the display panel 10.

[0100] Furthermore, by reducing the resistance of the fan-out line located in the far-end region, the resistance difference between the fan-out lines in the far-end and near-end regions is reduced. Both the first fan-out line 3 and the second fan-out line 4 receive data signals from the integrated circuit 30, and both the third fan-out line 73 and the fourth fan-out line 74 receive touch signals from the integrated circuit 30. Because the resistance difference between the first fan-out line 3 and the second fan-out line 4 is reduced, and the resistance difference between the third fan-out line 73 and the fourth fan-out line 74 is also reduced, the transmission loss of the data signal on the first fan-out line 3 and the second fan-out line 4 is closer, and the transmission loss of the touch signal on the third fan-out line 73 and the fourth fan-out line 74 is also closer. This is more conducive to improving signal uniformity, thereby improving the display quality of the display panel 10.

[0101] In some embodiments, see Figure 11 The orthographic projection of the fourth fan-out line 74 onto the substrate 6 at least partially overlaps with the orthographic projection of the second fan-out line 4 onto the substrate 6. The extension directions of the fourth fan-out line 74 and the second fan-out line 4 intersect.

[0102] Understandably, since at least a portion of the fourth fan-out line 74 and the second fan-out line 4 are widened, and the fourth fan-out line 74 and the second fan-out line 4 are located in different conductive layers, the facing area of ​​the fourth fan-out line 74 and the second fan-out line 4 is increased. Compared to the fourth fan-out line 74 and the second fan-out line 4 having parallel extension directions, the embodiments of this application reduce the facing area of ​​the fourth fan-out line 74 and the second fan-out line 4 by setting their extension directions to intersect, thereby reducing the parasitic capacitance between the fourth fan-out line 74 and the second fan-out line 4, and thus reducing the power consumption of the display panel 10.

[0103] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A display panel, characterized in that, It includes a display area and a fan-out area arranged along a first direction, wherein the fan-out area includes a first wiring area and a second wiring area arranged along a second direction, the second direction intersecting the first direction; The display panel includes multiple first fan-out lines disposed in the first wiring area and multiple second fan-out lines disposed in the second wiring area. The first fan-out lines extend from the side of the first wiring area close to the display area in a direction away from the display area; the second fan-out lines extend from the side of the second wiring area close to the display area in a direction away from the display area, then extend back to the display area, and then extend again away from the display area. The width of at least a portion of the second fan-out line is greater than the width of the first fan-out line.

2. The display panel according to claim 1, characterized in that, The second fan-out line includes a first line segment, a second line segment, and a third line segment connected in sequence; The first line segment extends from the side of the second wiring area closer to the display area in a direction away from the display area; the second line segment extends in a direction closer to the display area; and the third line segment extends in a direction away from the display area. The width of the first line segment and the width of the second line segment are both greater than the width of the first fan-out line.

3. The display panel according to claim 2, characterized in that, The width of the third line segment is equal to the width of the first fan-out line.

4. The display panel according to claim 2 or 3, characterized in that, The fan-out area includes a boundary near the display area, and the boundary includes the dividing point between the first wiring area and the second wiring area; The second wiring area includes a first sub-wiring area, a second sub-wiring area, and a third sub-wiring area. The first segment of the plurality of second fan-outgoing lines is disposed in the first sub-wiring area, the second segment of the plurality of second fan-outgoing lines is disposed in the second sub-wiring area, and the third segment of the plurality of second fan-outgoing lines is disposed in the third sub-wiring area. The perpendicular distance between the dividing point and the outermost first line segment of the first sub-wiring area is greater than the perpendicular distance between the dividing point and the outermost third line segment of the third sub-wiring area; the perpendicular distance between the dividing point and the outermost second line segment of the second sub-wiring area is greater than the perpendicular distance between the dividing point and the outermost third line segment of the third sub-wiring area.

5. The display panel according to claim 4, characterized in that, The perpendicular distance between the dividing point and the outermost first line segment of the first sub-wiring area is equal to the perpendicular distance between the dividing point and the outermost second line segment of the second sub-wiring area.

6. The display panel according to claim 4, characterized in that, The first line segment and the second line segment have a connection point, and the line connecting the dividing point and the connection point is parallel to the first direction.

7. The display panel according to claim 1, characterized in that, The second fan-out line includes a first segment, a fourth segment, a second segment, and a third segment connected in sequence; The first line segment extends from the side of the second wiring area closer to the display area in a direction away from the display area; the fourth line segment extends along the second direction; the second line segment extends in a direction closer to the display area; the third line segment extends in a direction away from the display area. The widths of the first line segment, the second line segment, and the fourth line segment are all greater than the width of the first fan-out line.

8. The display panel according to claim 1, characterized in that, The second fan-out line includes a first segment, a fifth segment, a fourth segment, a second segment, and a third segment connected in sequence; The first line segment extends from the side of the second wiring area near the display area in a direction away from the display area; the fifth line segment extends in a direction away from the display area; the fourth line segment extends along the second direction; the second line segment extends in a direction near the display area; and the third line segment extends in a direction away from the display area. The widths of the first line segment, the second line segment, the fourth line segment, and the fifth line segment are all greater than the width of the first fan-out line.

9. The display panel according to claim 1, characterized in that, The second fan-out line is curved, and the second fan-out line bulges outward in a direction away from the display area.

10. The display panel according to claim 1, characterized in that, Both the first fan-out line and the second fan-out line are data fan-out lines, or both are touch fan-out lines.

11. The display panel according to claim 1, characterized in that, The display panel includes a substrate, and a first conductive layer and a second conductive layer stacked on the substrate; The first fan-out line and the second fan-out line are both data fan-out lines and are both located in the first conductive layer; the display panel also includes a third fan-out line and a fourth fan-out line located in the second conductive layer, the third fan-out line and the fourth fan-out line are both touch fan-out lines and are both located in the second conductive layer; The fan-out area further includes a third wiring area and a fourth wiring area arranged along the second direction. The third fan-out line is disposed in the third wiring area, and the fourth fan-out line is disposed in the fourth wiring area. The third fan-out line extends from the side of the third wiring area close to the display area in a direction away from the display area. The fourth fan-out line extends from the side of the fourth wiring area close to the display area in a direction away from the display area, then extends back to the display area, and then extends again away from the display area. The width of at least a portion of the fourth outgoing line is greater than the width of the third outgoing line.

12. The display panel according to claim 11, characterized in that, The orthographic projection of the fourth fan-out line on the substrate at least partially overlaps with the orthographic projection of the second fan-out line on the substrate; The fourth fan-out line intersects the extension direction of the second fan-out line.

13. A display device, characterized in that, include: The display panel as described in any one of claims 1 to 12; The controller is electrically connected to the display panel.

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