Display panel and display device

Abstract

The present invention discloses a display panel and a display device. The display panel includes: a substrate, including a display area and a non-display area, wherein the non-display area at least partially surrounds the display area; the non-display area includes a transition area and a binding area, wherein the transition area is located between the binding area and the display area along a first direction; and a signal line, wherein the signal line includes at least one wire segment, wherein the wire segment is located in the transition area, wherein the wire segment includes a first sub-segment, wherein the first sub-segment extends along a second direction and is arranged along a third direction, wherein the second direction intersects the third direction; and wherein the maximum value of the line width difference between two adjacent first sub-segments is less than or equal to a first threshold value. The display panel and the display device provided according to the embodiments of the present invention avoid visual black edges generated at the edge where the display interface and the non-display interface intersect due to the difference in light transmittance.

Description

[0001] This application is a divisional application with the application date of February 26, 2021, application number 202110217202.1, and invention name “Display panel and display device”. Technical Field

[0002] The present invention belongs to the technical field of display devices, and in particular relates to a display panel and a display device. Background Art

[0003] With the development of science and technology, the touch technology of display devices has gradually matured, and touch screens are widely used in electronic devices such as mobile phones and computers. As users' requirements become higher and higher, they pursue designs with large screens and narrow bezels. In order to meet the needs of narrow bezels, the lines arranged in the bezels will be more compact. Especially in the position where the bezel is close to the display area, it is easy for local lines to be not blocked, which leads to differences in light transmittance between this area and other positions, resulting in visual differences in brightness and darkness, and causing visual black edges at the edges. Summary of the invention

[0004] The purpose of the present invention is to avoid visual black edges caused by differences in light transmittance at the edges where a display interface and a non-display interface meet.

[0005] In the first aspect, in order to solve the above-mentioned technical problems, an embodiment of the present invention provides a display panel, which includes: a substrate, including a display area and a non-display area, wherein the non-display area at least partially surrounds the display area; the non-display area includes a transition area and a binding area, and along a first direction, the transition area is located between the binding area and the display area; and a signal line, the signal line includes at least one wire segment, the wire segment is located in the transition area, the wire segment includes a first sub-segment, the first sub-segment extends along a second direction and is arranged along a third direction, and the second direction intersects with the third direction; the maximum value of the line width difference between two adjacent first sub-segments is less than or equal to a first threshold.

[0006] In a second aspect, an embodiment of the present invention further provides a display device, comprising the display panel described above.

[0007] By adopting the technical solution of the embodiment of the present invention, the first sub-segments extending along the second direction and arranged along the third direction in the transition area are designed so that the maximum value of the line width difference between two adjacent first sub-segments is less than or equal to the first threshold value, so as to avoid the signal line width being wider or the adjacent signal lines being uneven when the signal line passes through the transition area at the edge of the display area, resulting in obvious difference in brightness and darkness, and different transmittances leading to visual black edges at the transition area. Thus, by limiting the line width difference of adjacent first sub-segments, it is possible to avoid obvious differences in transmittances at different positions and avoid the generation of visual black edges. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0009] Figure 1 is a top view of a display panel provided by an embodiment of the present invention;

[0010] Figure 2 is a top view of a display panel provided by another embodiment of the present invention;

[0011] Figure 3 is a top view of a touch display panel provided by an embodiment of the present invention;

[0012] Figure 4 yes Figure 3 A partial enlarged view of a touch display panel;

[0013] Figure 5 yes Figure 3 An AA section view;

[0014] Figure 6 yes Figure 3 Another AA section view in the figure;

[0015] Figure 7 yes Figure 3 A partial enlarged view of another touch display panel;

[0016] Figure 8 yes Figure 3 A partial enlarged view of another touch display panel;

[0017] Fig. 9 yes Figure 3 A partial enlarged image of another touch display panel.

[0018] In the attached figure:

[0019] 1-substrate; 11-non-display area; 111-transition area; 111a-second area; 111b-first area; 112-binding area; 12-display area; 13-substrate; 14-packaging layer; 2-signal line; 21-wire segment; 211-first sub-segment; 211a-first preset sub-segment; 211b-second preset sub-segment; 212-second sub-segment; 22-first signal line; 23-second signal line; 3-driving circuit; 4-touch electrode; 41-first electrode; 42-second electrode; L-fourth direction; W-first direction. DETAILED DESCRIPTION

[0020] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0021] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0022] In order to better understand the present invention, Figures 1 to 9 The display panel and the display device according to the embodiments of the present invention are described in detail.

[0023] An embodiment of the present invention provides a display panel, which may be an organic light emitting diode (OLED) display panel.

[0024] Figure 1 FIG. 4 shows a top view of a display panel provided by an embodiment of the present invention, Figure 2A top view of a display panel provided by another embodiment of the present invention is shown, wherein the direction indicated by the arrow W is the first direction W, the direction indicated by the arrow L is the fourth direction L, and the directions indicated by the arrows are not directional, that is, they are not positive or negative, the first direction W includes the direction indicated by the arrow and the opposite direction, and the fourth direction L includes the direction indicated by the arrow and the opposite direction. The display panel includes a substrate 1, the substrate 1 includes a display area 12 and a non-display area 11, the non-display area 11 at least partially surrounds the display area 12, the non-display area 11 includes a transition area 111 and a binding area 112, and along the first direction W, the transition area 111 is located between the binding area 112 and the display area 12. The display panel also includes a signal line 2, which may include a command signal line for controlling the display panel, a touch signal line for realizing a touch function, and a transmission signal line for transmitting a signal to the display panel, and the signal line 2 realizes the signal connection between the display area 12 and the binding area 112, which is not specifically limited here.

[0025] Typically, the display panel further includes a cover plate (not shown) disposed opposite to the substrate 1, and the position corresponding to the non-display area 11 in the cover plate is shielded by laying non-transparent materials such as ink, so that the shielded position can be used to arrange signal lines 2, electronic components, etc. When the signal line 2 arranged in the non-display area 11 connects the signal of the display area to the driving circuit 3 of the binding area 112, the signal line 2 passes through the transition area 111 between the binding area 112 and the display area 12, and the transition area 111 is close to the edge of the display area 12. After the cover plate is set, the cover plate will shield the non-display area 11, and since the transition area 111 is set at the edge of the non-display area 11 close to the display area 12, in existing products, the process conditions are limited or there is a process error, and the position of the transition area 111 is not easy to be completely shielded to cause obvious light and dark differences at different positions of the transition area 111, causing the transition area 111 to easily produce visual black edges.

[0026] The present application provides a specific implementation method, in which the signal line 2 in the display panel includes at least one wire segment 21, the wire segment 21 is located in the transition area 111, the wire segment 21 includes a first sub-segment 211, the first sub-segment 211 extends along the second direction, is arranged along the third direction, and the second direction intersects the third direction; the maximum value of the line width difference between two adjacent first sub-segments 211 is less than or equal to a first threshold. By designing the first sub-segments 211 extending along the second direction and arranged along the third direction in the transition area 111, the maximum value of the line width difference between two adjacent first sub-segments 211 is less than or equal to the first threshold, so that by limiting the adjacent line width difference, while reducing the influence of the resistance of the signal line 2, the wire segments 21 in the transition area 111 at the edge of the display area in the signal line 2 are evenly distributed and have relatively even light transmittance, thereby improving the obvious light and dark difference at different positions of the transition area 111, which causes the transition area 111 to easily produce visual black edges.

[0027] It can be understood that the line widths of the signal line 2, the conductor segment 21, and the first sub-segment 211 mentioned in the present application refer to the line widths of the corresponding lines displayed on the positive projection of the substrate 1, and will not be emphasized separately later.

[0028] It should be explained that the maximum value of the line width difference between two adjacent first sub-segments 211 is less than or equal to the first threshold value, where the first threshold value is the line width difference between two adjacent first sub-segments 211 that can be just recognized by human eyes to produce a visual difference in brightness.

[0029] Optionally, for the setting of limiting the line width difference between two adjacent first sub-segments 211 to no more than the first threshold value, the allowable range of the line width difference between adjacent first sub-segments 211 may also be different depending on the product, the extension mode, arrangement mode, spacing size, whether it is equal spacing or variable spacing, etc. of the first sub-segments 211 in the transition zone 111. As long as the first threshold value can be guaranteed to be less than or equal to 10um, the first threshold value may also change according to the actual situation, and no specific limitation is made here. For example, when the first threshold value is less than or equal to 6.5um, no obvious visual black edge will be generated in the transition zone 111, and the consistency of the transmittance at each position will be better. Moreover, when the first threshold value is 6um or 5.5um, the difference in transmittance at different positions in the transition zone 111 can be reduced.

[0030] As mentioned above, the first sub-segment 211 disposed in the transition zone 111 extends along the second direction and is arranged along the third direction. It can be understood that the second direction in which the first sub-segment 211 extends and the third direction in which the first sub-segment 211 is arranged are not limited to a specific direction. The second direction can be any direction based on the horizontal, vertical or inclined angle on the substrate 1, and the second direction can be the same as the first direction W, or different from the first direction W, or the second direction can be the same as the fourth direction L, or different from the fourth direction L. The third direction is a direction intersecting the second direction. The second direction and the third direction can be perpendicular to each other, or they can intersect at a non-zero angle, which is not specifically limited here.

[0031] In some specific embodiments, referring to Figure 1 and Figure 2 At least two first sub-segments 211 are arranged at intervals in the orthographic projection of the substrate 1, and there is a first spacing a between any adjacent first sub-segments 211. In such a configuration that among the plurality of first sub-segments 211 extending along the second direction and arranged along the third direction in the transition zone 111, any two adjacent first sub-segments 211 in the third direction have the first spacing a, a wider line segment will not be formed visually due to the close distance between the adjacent first sub-segments 211, which will lead to obvious brightness difference with other line segments, thereby generating visual black edges.

[0032] Optionally, the first spacing a between adjacent first sub-segments 211 in different products is different, and in the same transition zone 111 where multiple first sub-segments 211 are arranged, the first spacing a between any adjacent first sub-segments 211 may also be different, and the first spacing a is not a fixed value, but is designed according to different products, different line widths of adjacent first sub-segments 211, etc. For example, in different products, the first spacing a between two first sub-segments 211 in the first product is b1, and the first spacing a between two first sub-segments 211 in the second product is b2, and b1 and b2 may be the same or different in value, but what needs to be satisfied is that, through the design of such first spacing a, the problem of visual black edges caused by the spacing between adjacent first sub-segments 211 can be avoided. In the same product, the transition zone 111 is provided with three first sub-segments 211 along the third direction, the first spacing a between the first first sub-segment 211 and the second first sub-segment 211 is c1, the first spacing a between the second first sub-segment 211 and the third first sub-segment 211 is c2, c1 and c2 may be the same or different in value, and only need to avoid the problem of visual black edges caused by the spacing between adjacent first sub-segments 211, and no specific limitation is made here. In order to avoid the problem of visual black edges caused by line spacing, the first sub-segments 211 in the same product or in different products at least need to satisfy the first spacing a greater than or equal to 2um.

[0033] There may be many forms in which the first sub-segments 211 extend along the second direction in the transition area 111 and are arranged along the third direction. Two different specific embodiments are listed below for illustration, but the present invention is not limited thereto.

[0034] In a specific embodiment, referring to Figure 2 , the substrate 1 may be an array substrate, and along the first direction W, the transition area 111 is located between the display area 12 and the binding area 112, and the binding area 112 is bound and connected with a plurality of binding terminals for binding and connecting the driving circuit 3, and the driving circuit 3 may be a flexible circuit board, so as to be electrically connected to the outside through the bending of the flexible circuit board, thereby realizing a narrow frame design. A plurality of signal lines 2 are arranged in the non-display area 11 and electrically connect the display area 12 with the driving circuit 3 in the binding area 112, and the signal line 2 is used to conduct the transmission signal located in the display area 12 of the display panel. When the signal in the display area 12 is electrically connected to the driving circuit 3 in the binding area 112 through the signal line 2, the wire segment 21 is located in the transition area 111 between the display area 12 and the binding area 112, and the wire segment 21 includes at least a first sub-segment 211, and at least the first sub-segment 211 is located in the transition area 111, and the first sub-segment 211 extends along the second direction and is arranged along the third direction, such as Figure 2 As shown, the extension direction of the first sub-segment 211 along the second direction is different from the first direction W and the fourth direction L. The second direction refers to a direction that is inclined at a certain angle relative to the first direction W. On this basis, the arrangement direction along the third direction is perpendicular to the second direction, thereby forming a form in which the first sub-segment 211 extends and is arranged along the inclined direction.

[0035] In another specific embodiment, referring to Figures 3 to 6 , the substrate 1 may include a substrate 13 and a packaging layer 14. Along the first direction W, the transition area 111 is located between the display area 12 and the binding area 112. The binding area 112 is bound and connected with a plurality of binding terminals for binding and connecting the drive circuit 3. When the packaging layer 14 is packaged and connected to the substrate 13, in the orthographic projection in the direction of the substrate 13, the transition area 111 at least partially overlaps with the packaging layer 14, and a touch electrode 4 is formed on the packaging layer 14 located in the display area 12, and each signal line 2 connects a touch electrode 4 to a binding terminal of the binding area 112. A plurality of signal lines 2 are arranged at the edge positions around the packaging layer 14 and electrically connect the touch electrode 4 of the display area 12 with the drive circuit 3, and the signal line 2 is used to transmit the touch signal of the touch electrode 4. And the wire segment 21 in the signal line 2 is located in the transition area 111, at least the first sub-segment 211 is located in the transition area 111, and the first sub-segment 211 extends along the second direction and is arranged along the third direction. As Figure 4As shown, in order to achieve a narrow frame, the area occupied by the signal line arranged at the edge of the encapsulation layer 14 is as small as possible, and the width of the transition area 111 corresponding to the non-display area in the encapsulation layer 14 in the first direction W will also be narrower. In this limited area, in order to complete the wiring of the wire segment 21, the area of ​​the transition area 111 is fully utilized, at least the first sub-segment 211 will extend along the fourth direction L and be arranged along the first direction W. At this time, the extension direction of the first sub-segment 211 along the second direction is the same as the fourth direction L, and the direction of arrangement along the third direction is the same as the first direction W, so as to form a first preset sub-segment 211a. Alternatively, the first sub-segment 211 can also be set to extend along the first direction W and be arranged along the fourth direction L. At this time, the first sub-segment 211 is located at the edge of the transition area 111 close to the display area 12 to form a second preset sub-segment 211b, which is used to connect the touch electrode 4 located in the display area 12.

[0036] Regardless of the direction in which the first sub-segment 211 in the wire segment 21 extends and is arranged in the transition area 111, in order to prevent the transition area 111 located at the edge of the display area 12 from causing obvious differences in light transmittance at different positions due to the first sub-segment 211, thereby causing obvious visual black edges to be generated locally, at least the first sub-segment 211 arranged in the transition area 111 can be designed in different matching forms such as the arrangement mode, spacing, line width, and adjacent line width difference. The following takes the arrangement of the touch signal line extending along the fourth direction L and arranged along the first direction W on the packaging layer 14 as an example, and lists several specific implementation methods for specific description, but is not limited to the following specific implementation methods.

[0037] Continue to refer to Figure 3 The touch electrode 4 includes a plurality of first electrodes 41 and a plurality of second electrodes 42. The plurality of first electrodes 41 are arranged along the first direction W and extend along the fourth direction L. The plurality of second electrodes 42 are arranged along the fourth direction L and extend along the first direction W. The first direction W intersects with the fourth direction L. The signal line 2 includes a first signal line 22 and a second signal line 23. The first signal line 22 connects the first electrode 41 to the binding terminal respectively. At least one first signal line 22 includes a first sub-segment 211. The second signal line 23 connects the second electrode 42 to the binding terminal respectively. At least one second signal line 23 includes a first sub-segment 211. When the first signal line 22 and the first signal line 23 are arranged in a limited area of ​​the encapsulation layer 14, by extending the first sub-segments 211 in the first signal line 22 and the second signal line 23 along the fourth direction L and arranged along the first direction W, the space of the transition area 111 can be utilized to the maximum extent, which is conducive to the design of a narrow frame.

[0038] It is understandable that, referring to Figure 5 and Figure 6When the plurality of first electrodes 41 and the plurality of second electrodes 42 are arranged in an array above the encapsulation layer 14, the first electrodes 41 and the second electrodes 42 may be as follows Figure 5 The second electrode 42 is arranged in the same layer, and the second electrode 42 is connected with the first electrode 41 by a bridge at the overlapped part. Alternatively, the first electrode 41 and the second electrode 42 can also be connected as shown in FIG. Figure 6 The first electrode 41 and the second electrode 42 are electrically connected by opening a through hole at a corresponding position of the insulating layer to realize the touch function. The specific arrangement of the first electrode 41 and the second electrode 42 in the packaging layer 14 is not specifically limited here.

[0039] Optionally, when the touch electrode 4 is connected to the driving circuit 3 located on the substrate 13 through the signal line 2 set on the packaging layer 14, a through hole is set for the non-display area on the packaging layer 14, and the signal line 2 can be connected to the driving circuit 3 located on the substrate 13 through the through hole.

[0040] When the first signal lines 22 respectively connect different first electrodes 41 to the driving circuit 3 of the binding area 112, since the first electrodes 41 are arranged along the first direction W, the distances between different first electrodes 41 and the binding area 112 are different. When the second signal lines 23 respectively connect different second electrodes 42 to the driving circuit 3 of the binding area 112, since the second electrodes 42 are arranged along the fourth direction L, the distances between different second electrodes 42 and the symmetry center of the display panel in the fourth direction L are different, which makes the signal attenuation between different first electrodes 41 and between the second electrodes 42 inconsistent. In order to ensure consistency, it is necessary to make the resistance of the first signal lines 22 equal; the resistance of the second signal lines 23 equal.

[0041] It can be understood that in order to achieve equal resistance of the first signal lines 22 and equal resistance of the second signal lines 23, for example, the first electrodes 41 arranged along the first direction W can be achieved by changing the length of the first signal line 22, that is, in the first direction W, the first signal line 22 connected to the first electrode 41 closest to the binding area 112 is the shortest, and the farther away from the binding area 112, the longer the length of the first signal line 22. In order to achieve equal resistance arrangement of the first signal lines 22, the length of the first sub-segment 211 in the previously shorter first signal line 22 can be extended or the line width of the first sub-segment 211 in the previously shorter first signal line 22 can be widened. Similarly, the second signal line 23 is the same, and no specific explanation is given here.

[0042] Similarly, in the process of considering equal resistance wiring for the first signal line 22 and the second signal line 23, affected by the transition zone 111 and the border width on which the signal line 2 can be arranged on the packaging layer 14, in order to achieve a narrow border, the layout of the signal line 2 in the transition zone 111 will be tighter. In order to enable the first sub-segment 211 to meet the design that adjacent first sub-segments 211 have a first spacing a and / or the line width of the first sub-segment 211 is not greater than the first threshold, so as to avoid the visual black edge caused by the difference in transmittance at different positions of the transition zone 111 due to the differentiated design of the first sub-segment 211, one or more of the following methods can be used for adjustment, but are not limited to the following specific implementation methods.

[0043] In a specific embodiment, referring to Figures 3 to 7 When the signal line 2 is arranged in the limited area of ​​the transition zone 111, in order to ensure the consistency of the resistance of the multiple first signal lines 22 and the consistency of the resistance of the multiple second signal lines 23, it can be achieved by adjusting the length and / or width of the first sub-segment 211 respectively. Generally, in order to achieve a narrow frame, the area of ​​the transition zone 111 is gradually reduced, and the space available for wiring becomes smaller, which cannot meet the demand for balancing the resistance by increasing the length of more first sub-segments 211. Usually, the resistance is balanced by increasing the length of some first sub-segments 211 and changing the line width of some first sub-segments 211. It should be noted that when increasing the length of the first sub-segment 211, in order to improve the utilization rate of the transition zone 111, the first sub-segment 211 is not limited to extending only in a certain direction, and can be as follows Figure 4 When the resistance is balanced by increasing the line width, the line width difference between adjacent first sub-segments 211 needs to be no greater than the first threshold, and the first spacing a between adjacent first sub-segments 211 can also meet the requirement of being no less than 2um.

[0044] Reference Figure 3 When resistance balance is achieved by increasing the length of the first sub-segment 211, and there is only one first sub-segment 211 in a signal line 2, the signal line 2 with smaller impedance can be achieved by increasing the length of the first sub-segment 211. The first sub-segment 211 is arranged in a bent manner in the transition zone 111 to fully utilize the space.

[0045] Reference Figure 6 and Figure 7 When the resistance balance is achieved by increasing the length of the first sub-segment 211, multiple first sub-segments 211 can be provided in one or more signal lines 2, that is, at least one signal line 2 includes more than two first sub-segments 211 connected in parallel with each other. Thus, the impedance is increased by connecting the first sub-segments 211 in parallel in a signal line 2 with a smaller impedance.

[0046] Optionally, the first subsection 211 connected in parallel to the signal line 2 may be: Figure 6 As shown in , the two first sub-segments 211 connected in parallel are arranged in different layers and their orthographic projections on the substrate 1 at least partially overlap. Figure 3 and Figure 6 It can be seen that the two first sub-segments 211 arranged in parallel in the corresponding different layers are located on the same first signal line 22, and the two ends of the first signal line 22 are respectively connected to the touch-control electrode 4 and the drive circuit 3, and at least the part of the first signal line 22 located in the transition area 111 forms a form of two first sub-segments 211 in parallel. While increasing the total length of the first sub-segments 211, the width of the first sub-segments 211 in the orthographic projection direction of the substrate 1 after parallel connection is narrower and lower than the first threshold value, so as to reduce the situation where the transition area 111 is prone to produce visual black edges. Or the parallel first sub-segments 211 can also be as follows Figure 7 As shown, in the orthographic projection direction of the substrate 1, the first sub-segments 211 are arranged at intervals in the first direction W, which is not specifically limited here. For the first sub-segments 211 connected in parallel, the line widths of at least two first sub-segments 211 are equal, and the line widths of the parallel first sub-segments 211 in each signal line 2 may be equal, and the line widths of the parallel first sub-segments 211 in different signal lines 2 may be the same or different, which is not specifically limited here.

[0047] Reference Figure 1 and Figure 8 When the requirement of equal resistance is still not met by adjusting the length of the first sub-segment 211 and the resistance needs to be balanced by adjusting the line width of some first sub-segments 211, or when the resistance is balanced by directly adjusting the line width of the first sub-segment 211, in order to achieve resistance balance, the line width of some first sub-segments 211 will be increased for adjustment. In this case, there will be more than two line widths in the multiple first sub-segments 211 in the transition area 111. When the line width is ensured not to exceed the first threshold, in order to reduce the difference in transmittance at different positions of the transition area 111, the multiple first sub-segments 211 arranged on the transition area 111 can be further adjusted on this basis.

[0048] In a specific embodiment, referring to Figure 1 and Figure 8 , there is a first line spacing between adjacent first sub-segments 211, and there is a first ratio between any adjacent first line spacings, and the range of the first ratio is 0.5 to 2. By limiting the first ratio of the first line spacing between adjacent first sub-segments 211, it is avoided that the corresponding area has a relatively obvious difference in brightness and darkness, thereby achieving a better effect of preventing visual black edges. Optionally, the first line spacing between different adjacent first sub-segments 211 can be the same or different in value, which is not specifically limited here.

[0049] In another specific embodiment, referring to Figure 1 , Figure 8 and Fig. 9 , in the third direction (i.e. Figure 1 The line width of the first sub-segment 211 gradually increases or decreases. Thus, by using the gradual change of the line width of the first sub-segment 211, it is avoided that the line width difference between adjacent first sub-segments 211 is large, and the difference in brightness is more obvious, which easily produces visual black edges.

[0050] In yet another specific embodiment, referring to Figure 8 and Fig. 9 , when the first line spacings between adjacent first sub-segments 211 are all different values, in the third direction (ie Figure 1 In the first direction W in the image, as the line width of the first sub-segment 211 increases, the line spacing between two adjacent first sub-segments 211 increases, or as the line width of the first sub-segment 211 decreases, the line spacing between two adjacent first sub-segments 211 decreases. The line spacing can be adaptively adjusted according to the specific value of the line width of the first sub-segment 211 to perform corresponding compensation, thereby avoiding the problem of obvious brightness difference caused by the wide local line width.

[0051] Optionally, in order to avoid obvious brightness difference caused by large difference in line widths of adjacent first sub-segments 211 , the line width of a first sub-segment 211 is not greater than twice the line width of the adjacent first sub-segment 211 .

[0052] As a specific implementation of this application, continue to refer to Figure 8 and Fig. 9 Regardless of the second direction in which the first sub-segment 211 is extended and arranged in the third direction in the transition area 111, the wire segment 21 further includes a second sub-segment 212, and the second sub-segment 212 is connected to the first sub-segment 211; the extension direction of the second sub-segment 212 intersects the extension direction of the first sub-segment 211. The second sub-segment 212 is provided to change the arrangement direction of the first sub-segment 211 arranged in a fixed direction so that it can be connected to the touch electrode 4 of the display area 12, the drive circuit 3 of the binding area 112, or the signal line 2 outside the transition area 111.

[0053] Optionally, for the second sub-segment 212, in order to ensure that it does not cause obvious light and dark differences at different positions in the transition zone 111, resulting in the generation of visual black edges, the second sub-segment 212 may also adopt the arrangement form of the first sub-segment 211, which is not specifically described here. As for the wire segment 21, it may also include other sub-segments in addition to the first sub-segment 211 and the second sub-segment 212, and the extension direction of the other sub-segments may be the same as that of the first sub-segment 211, or may be different, and the other sub-segments may also adopt the same arrangement form as the first sub-segment 211 to avoid the generation of visual black edges, which is not specifically limited here.

[0054] It is understandable that, referring to Fig. 9 In the transition area 111, the transition area 111 includes at least a first area 111b and a second area 111a. The second area 111a is located on the side of the first area 111b close to the display area 12. For the second area 111a closer to the display area 12, it is easier to produce a visual black edge. In order to avoid the second area 111a being more likely to produce a visual black edge than the first area 111b, the first sub-segment 211 includes a first line segment and a second line segment. The first line segment is the first sub-segment 211 of the first signal line 22, and the second line segment is the first sub-segment 211 of the second signal line 23; the first line segment is located in the first area 111b, and the second line segment is located in the second area 111a. In the second area 111a, the second line segment is set to extend along the fourth direction L and be arranged in the first direction W, so as to facilitate the adjustment of the line width, line spacing, etc. of the plurality of second line segments, which has strong controllability and ensures better effects. In the first area 111b, the first line segment can be set in a bent form to achieve equal resistance wiring.

[0055] The present application also provides a display device, including the display panel described in any of the above embodiments. The display device can be a fingerprint lock with touch and fingerprint recognition functions, or a touch device with only touch function, or an electronic device that can only be used for display, which is not specifically limited here.

[0056] The above description shows and describes several preferred embodiments of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present application, and should be within the scope of protection of the claims attached to the present application.

Claims

1. A display panel, It is characterized in that include: A substrate, comprising a display area and a non-display area, wherein the non-display area at least partially surrounds the display area; the non-display area comprises a transition area and a binding area, and along a first direction, the transition area is located between the binding area and the display area; as well as A signal line, wherein the signal line includes at least one conductor segment, the conductor segment is located in the transition region, the conductor segment includes a first sub-segment, the first sub-segment extends along a second direction and is arranged along a third direction, the second direction intersects the third direction; and a maximum value of a difference in line width between two adjacent first sub-segments is less than or equal to a first threshold; At least one of the signal lines includes two or more of the first sub-segments connected in parallel with each other; In the third direction, the line width of the first subsegment gradually increases or decreases.

2. The display panel according to claim 1, It is characterized in that At least two of the first sub-segments are arranged at intervals in the orthographic projection of the substrate, and there is a first distance between any adjacent first sub-segments.

3. The display panel according to claim 2, It is characterized in that The first spacing is greater than or equal to 2 um.

4. The display panel according to claim 1, It is characterized in that There is a first line spacing between adjacent first sub-segments, and there is a first ratio between any adjacent first line spacings, and the first ratio ranges from 0.5 to 2.

5. The display panel according to claim 1, It is characterized in that The two first sub-segments connected in parallel are arranged in different layers and their orthographic projections on the substrate at least partially overlap.

6. The display panel according to claim 1, It is characterized in that The line widths of at least two of the first sub-segments are equal.

7. The display panel according to claim 1, It is characterized in that In the third direction, as the line width of the first subsegment increases, the line spacing between two adjacent first subsegments increases; or, as the line width of the first subsegment decreases, the line spacing between two adjacent first subsegments decreases.

8. The display panel according to claim 1, It is characterized in that The line width of the first sub-segment is not greater than twice the line width of the first sub-segment adjacent thereto.

9. The display panel according to claim 1, It is characterized in that The first threshold is less than or equal to 10 um.

10. The display panel according to claim 1, It is characterized in that The display panel further includes: A binding terminal, disposed in the binding area; and The touch electrodes are located in the display area, and each of the signal lines connects one of the touch electrodes to one of the binding terminals.

11. The display panel according to claim 10, It is characterized in that The touch electrodes include a plurality of first electrodes and a plurality of second electrodes, the plurality of first electrodes are arranged along the first direction and extend along a fourth direction, the plurality of second electrodes are arranged along the fourth direction and extend along the first direction, and the first direction intersects the fourth direction; The signal line includes a first signal line and a second signal line, the first signal line connects the first electrode with the binding terminal respectively, and at least one of the first signal lines includes the first sub-segment; the second signal line connects the second electrode with the binding terminal respectively, and at least one of the second signal lines includes the first sub-segment.

12. The display panel according to claim 11, It is characterized in that The resistances of the first signal lines are all equal; the resistances of the second signal lines are all equal.

13. The display panel according to claim 11, It is characterized in that The conductor segment further includes a second sub-segment, and the second sub-segment is connected to the first sub-segment; an extension direction of the second sub-segment intersects with an extension direction of the first sub-segment.

14. The display panel according to claim 13, It is characterized in that The transition zone includes at least a first area and a second area, the second area is located on a side of the first area close to the display area, the first sub-segment includes a first line segment and a second line segment, the first line segment is a first sub-segment of the first signal line, and the second line segment is a first sub-segment of the second signal line; the first line segment is located in the first area, and the second line segment is located in the second area.

15. The display panel according to claim 10, It is characterized in that The substrate comprises a base and a packaging layer, and the touch electrodes and the signal lines are located on the packaging layer.

16. A display device, It is characterized in that Comprising a display panel according to any one of claims 1-15.

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