Display panel, display device and spliced display device

Abstract

A display panel (10) comprises a back plate (1), a plurality of back surface wires (121), a plurality of side surface wires (13a1) and a plurality of blocking parts (2), the back plate (1) comprises a display surface (11), a non-display surface (12) and a plurality of side surfaces (13) connecting the display surface (11) and the non-display surface (12), wherein one side surface (13) is a selected side surface (13a); the plurality of back surface wires (121) are arranged at intervals on the non-display surface (12), each back surface wire (121) comprises a first line segment (121a) and a second line segment (121b); the plurality of side surface wires (13a1) are arranged at intervals on the selected side surface (13a), each side surface wire (13a1) has one end located on the display surface (11) and the other end located on the non-display surface (12), and the side surface wire (13a1) is electrically connected with the first line segment (121a); the extension direction of the first line segment (121a) is the same as the extension direction of the end of the side surface wire (13a1) located on the non-display surface (12), and the extension direction of the second line segment (121b) intersects with the first line segment (121a); the plurality of blocking parts (2) are arranged on the non-display surface (12), and there is one blocking part (2) between two adjacent first line segments (121a).

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of display, and in particular, to a display panel, a display device and a spliced display device. BACKGROUND

[0002] Micro Light Emitting Diode (Micro LED) display technology, as a new generation of display technology, is widely used in display devices that realize seamless splicing and is known as the third generation of display technology. The display device adopts a side wiring mode to realize small-pitch splicing assembly of the display device and improve the resolution of the product. SUMMARY

[0003] In one aspect, a display panel is provided. The display panel includes a back plate, a plurality of back surface wirings, a plurality of side surface wirings and a plurality of blocking portions. The back plate includes a display surface, a non-display surface and a plurality of side surfaces for connecting the display surface and the non-display surface, wherein one side surface is a selected side surface; the plurality of back surface wirings are arranged at intervals on the non-display surface, and each back surface wiring includes a first segment and a second segment. The plurality of side surface wirings are arranged at intervals on the selected side surface, one end of each side surface wiring is located on the display surface, and the other end is located on the non-display surface; each side surface wiring is electrically connected to the first segment; the extension direction of the first segment is the same as the extension direction of the end of the side surface wiring located on the non-display surface, and the extension direction of the second segment intersects the extension direction of the first segment. The plurality of blocking portions are arranged on the non-display surface, and one blocking portion is arranged between two adjacent first segments.

[0004] In some embodiments, the material of the blocking portion includes an insulating material.

[0005] In some embodiments, the material of the blocking portion includes a resin.

[0006] In some embodiments, the blocking portion is in contact with the adjacent first segment.

[0007] In some embodiments, the material of the blocking portion includes a metal material, and the blocking portion has a spacing with the adjacent first segment.

[0008] In some embodiments, the ratio of the distance between the blocking portion and the adjacent first segment to the distance between the two adjacent first segments where the blocking portion is located is greater than 1:3.

[0009] In some embodiments, the material of the blocking portion includes at least one of copper, aluminum, silver and gold.

[0010] In some embodiments, the distance between the surface of the non-display surface and the blocking portion is greater than the distance between the surface of the non-display surface and the first linear segment.

[0011] In some embodiments, the distance between the surface of the non-display surface and the blocking portion is greater than the distance between the surface of the non-display surface and the first linear segment by 0.4-0.6 μm.

[0012] In some embodiments, the contour shape of the orthographic projection of the blocking portion on the non-display surface comprises a rectangle, a square, a trapezoid or a triangle.

[0013] In some embodiments, the display panel further comprises a plurality of isolation portions disposed on the non-display surface, each first linear segment is electrically connected to the end portion of the side surface trace on the non-display surface through a connecting portion, one isolation portion is disposed between adjacent connecting portions, the isolation portion comprises an insulating material, and the isolation portion has a spacing with the adjacent connecting portion.

[0014] In some embodiments, the ratio of the distance between the isolation portion and the adjacent connecting portion to the distance between the blocking portion and the adjacent connecting portion is greater than 1:3.

[0015] In some embodiments, the isolation portion extends to the intersection line between the non-display surface and the selected side surface.

[0016] In some embodiments, the distance between the surface of the non-display surface and the isolation portion is greater than or equal to the distance between the surface of the non-display surface and the first linear segment.

[0017] In some embodiments, the blocking portion and the isolation portion between adjacent two first linear segments are connected.

[0018] In some embodiments, when the blocking portion is made of an insulating material, the connected blocking portion and isolation portion are an integral structure.

[0019] In some embodiments, the width of the blocking portion in a first direction is greater than the width of the isolation portion in the first direction, and the first direction is perpendicular to the extension direction of the first linear segment.

[0020] In some embodiments, the blocking portion and the isolation portion between adjacent two first linear segments do not contact.

[0021] In another aspect, a display device is provided, comprising the display panel as described above.

[0022] In yet another aspect, a tiled display device is provided, comprising a plurality of display devices as described above, the plurality of display devices being tiled together. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present disclosure, the following will briefly introduce the drawings needed to be used in some embodiments of the present disclosure. Obviously, the drawings in the following description are only some drawings of the embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art according to these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams, and are not limited to the actual size, actual process, actual time sequence, etc. of the product involved in the embodiments of the present disclosure.

[0024] Figure 1A A plan view of a non-display surface of a display panel provided by some embodiments;

[0025] Figure 1B A cross-sectional structure view of the display panel along the section line AA' provided by some embodiments;

[0026] Figure 2 A side view of the display panel using laser etching provided by some embodiments;

[0027] Figure 3 A structure view of a line damage of a non-display surface of a display panel provided by some embodiments;

[0028] Figure 4 A structure view of a display panel side line formed by using a flexible mask sputtering process;

[0029] Figure 5 A structure view of a display panel back line short circuit condition provided by some embodiments;

[0030] Figure 6 A structure view of a display panel side line short circuit condition provided by some embodiments;

[0031] Figure 7 A structure view of a back plate provided by some embodiments of the present disclosure;

[0032] Figure 8A A plan structure view of a non-display surface of a display panel provided by some embodiments of the present disclosure;

[0033] Figure 8B A structure view of a non-display surface of a display panel provided by some embodiments of the present disclosure;

[0034] Figure 9 A cross-sectional structure view of the display panel along the section line BB' provided by some embodiments of the present disclosure according to Figure 8B ​

[0035] Figure 10 This is another structural diagram of the non-display surface of the display panel provided in some embodiments of this disclosure;

[0036] Figure 11 This is yet another structural diagram of the non-display surface of the display panel provided in some embodiments of this disclosure;

[0037] Figure 12 This is yet another structural diagram of the non-display surface of the display panel provided in some embodiments of this disclosure;

[0038] Figure 13 This is yet another structural diagram of the non-display surface of the display panel provided in some embodiments of this disclosure;

[0039] Figure 14 This is yet another structural diagram of the non-display surface of the display panel provided in some embodiments of this disclosure;

[0040] Figure 15 This is yet another structural diagram of the non-display surface of the display panel provided in some embodiments of this disclosure;

[0041] Figure 16 This is yet another structural diagram of the non-display surface of the display panel provided in some embodiments of this disclosure;

[0042] Figure 17 This is yet another structural diagram of the non-display surface of the display panel provided in some embodiments of this disclosure;

[0043] Figure 18A Some embodiments of this disclosure are based on Figure 11 The provided cross-sectional structural diagram of the display panel along the cutting line FF';

[0044] Figure 18B Some embodiments of this disclosure are based on Figure 17 The provided cross-sectional structural diagram of the display panel along the section line CC';

[0045] Figure 19A This is a structural diagram of the non-display surface of a display panel provided in some embodiments of this disclosure;

[0046] Figure 19B This is yet another structural diagram of the non-display surface of the display panel provided in some embodiments of this disclosure;

[0047] Figure 20 This is yet another structural diagram of the non-display surface of the display panel provided in some embodiments of this disclosure;

[0048] Figure 21 This is yet another structural diagram of the non-display surface of the display panel provided in some embodiments of this disclosure;

[0049] Figure 22 A structural diagram of a non-display surface of a display panel provided by some embodiments of the present disclosure;

[0050] Figure 23 Another structural diagram of a non-display surface of a display panel provided by some embodiments of the present disclosure;

[0051] Figure 24 Still another structural diagram of a non-display surface of a display panel provided by some embodiments of the present disclosure;

[0052] Figure 25 Still another structural diagram of a non-display surface of a display panel provided by some embodiments of the present disclosure;

[0053] Figure 26 A cross-sectional structural diagram of a display panel provided by some embodiments of the present disclosure along a section line DD’; Figure 25

[0054] Another cross-sectional structural diagram of a display panel provided by some embodiments of the present disclosure along a section line HH’; Figure 27 Figure 24 A structural diagram of a display panel provided by some embodiments of the present disclosure;

[0055] Figure 28 A side view of a display panel provided by some embodiments of the present disclosure using laser etching;

[0056] Figure 29 A planar structural diagram of a display panel provided by some embodiments of the present disclosure using laser etching;

[0057] Figure 30 A structural diagram of a display device provided by some embodiments of the present disclosure;

[0058] Figure 31 A planar structural diagram of a spliced display device provided by some embodiments of the present disclosure.

[0059] DETAILED DESCRIPTION Figure 32 The technical solutions in some embodiments of the present disclosure will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present disclosure, but not all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present disclosure.

[0060] The technical solutions in some embodiments of the present disclosure will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present disclosure, but not all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present disclosure.

[0061] ​Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise," "comprising," and the like are to be construed in an open, inclusive sense, as opposed to a closed or exclusive sense, meaning that the method or composition described can include additional elements, steps, or acts beyond those that are listed. In the description of the embodiments, the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples" are not necessarily referring to the same embodiment or example. Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0062] In this document, the terms "first," "second," "third," "fourth," and the like, do not necessarily mean any actual quantity or order, but can be used for the purpose of description. Accordingly, a feature defined with these terms can explicitly or implicitly include one or more of the features. In the description of embodiments of the present disclosure, the meaning of "a plurality" is two or more, unless otherwise specified.

[0063] In describing some embodiments, it can be used that "connect" and its derivatives. For example, the term "connected" can be used to describe some embodiments in which two or more components are in direct physical or electrical contact with each other. The embodiments disclosed herein are not necessarily limited to the context.

[0064] "A, B, and C at least one of" has the same meaning as "at least one of A, B, or C", both of which include the following combinations of A, B, and C: only A, only B, only C, a combination of A and B, a combination of A and C, a combination of B and C, and a combination of A, B, and C.

[0065] As used herein, "parallel," "perpendicular," and "equal" include the recited condition and conditions that are approximately the recited condition, the approximation being within an acceptable range of deviation, as determined by one of ordinary skill in the art considering the measurements at issue and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallel and near parallel, where near parallel can be within an acceptable range of deviation of, for example, 5°; "perpendicular" includes absolute perpendicular and near perpendicular, where near perpendicular can also be within an acceptable range of deviation of, for example, 5°. "Equal" includes absolute equality and near equality, where near equality can be within an acceptable range of deviation of, for example, less than or equal to 5% of either of the two quantities being compared.

[0066] Exemplary embodiments are described herein with reference to cross-sectional and / or plan view illustrations that are schematic illustrations of idealized embodiments. In the drawings, the thickness of layers and regions are exaggerated for clarity. Accordingly, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and / or tolerances, are to be expected. Thus, the exemplary embodiments should not be construed as limited to the particular shapes of regions as illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, a film layer patterned in a rectangular shape in a plan view would, in actual practice, have rounded corners due to the continuous nature of the film layer. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of exemplary embodiments.

[0067] In the related art, a single display panel can employ wires disposed on the side of the panel to achieve connection of the display surface wires of the panel to drivers disposed on the non-display surface of the display panel, so that the spacing between adjacent display panels can be smaller when multiple display panels are spliced to form a larger size display device. Specifically, a metal layer can be formed on the side of the display panel, and then the metal layer can be etched to form a pattern of side wires by an etching process, or the side wires can be formed directly on the display panel using a flexible mask M. As shown in FIGS. 1A and 1B, the display panel 10 includes a front surface wire 101 and a back surface wire 102. The front surface wire 101 is a collective term for all signal lines, power lines, control lines, etc. disposed on the display surface of the display panel 10, and the back surface wire 102 is a collective term for conductive patterns disposed on the non-display surface of the display panel 10. Figure 1A and Figure 1B As shown in FIGS. 1A and 1B, the display panel 10 includes a front surface wire 101 and a back surface wire 102. The front surface wire 101 is a collective term for all signal lines, power lines, control lines, etc. disposed on the display surface of the display panel 10, and the back surface wire 102 is a collective term for conductive patterns disposed on the non-display surface of the display panel 10. Figure 1B As shown in FIGS. 1A and 1B, the display panel 10 includes a front surface wire 101 and a back surface wire 102. The front surface wire 101 is a collective term for all signal lines, power lines, control lines, etc. disposed on the display surface of the display panel 10, and the back surface wire 102 is a collective term for conductive patterns disposed on the non-display surface of the display panel 10.

[0068] The inventors find that in the process of forming the metal layer into a plurality of side traces by using etching process, the long-focus-depth laser etching is mainly used to achieve this, and in this process, if the surface of the part of the film layer of the front trace and the back trace near the side trace is exposed, it will inevitably be irradiated by the long-focus-depth laser, thus causing damage to the above-mentioned exposed area of the front trace and the back trace of the display panel, and after the product reliability test or long-term use, the damage position will become a corrosion inducing point, providing a source for the path of water and oxygen intrusion, further causing line damage. In some embodiments, as shown in Figure 2 , the irradiation direction of the laser LASER is parallel to the y-axis and substantially parallel to the display surface of the panel, and the movement path L1 of the laser is parallel to the x-axis; considering that the display panel 10' has more devices on the display surface and the film layer structure is more complex, the display panel can be rotated by a certain angle when laser etching is performed, for example, the display surface of the display panel is arranged to have an angle θ with the y-axis and an angle (90°+θ) with the x-axis, wherein θ is not more than 3°, for example, it can be 0.8°; so that the front trace 101 on the display surface of the display panel 10' will not be irradiated by the laser, and damage to the front trace 101 on the display surface can be avoided, thereby ensuring the reliability of the display surface; however, this will cause damage to the back trace on the non-display surface, as shown in Figure 2 , the ss position will be irradiated by the laser, and if there is a back trace pattern at the ss position, a damage point will be formed at the corresponding position. As shown in Figure 3 , the back trace includes a straight line segment and an inclined line segment, and a damage point ss will be formed at the position where the extension line of the laser etching line intersects with the inclined line, that is, the adjacent position of the straight line segment to the inclined line segment will be irradiated by the laser, thereby causing etching damage and affecting the quality of the product.

[0069] The inventors also find that if the flexible mask M is directly used to form the side trace 13a1 of the display panel 10', as shown in Figure 4 , since the mask M cannot be completely attached to the display panel 10', a gap exists between the mask M and the display panel, and when a plating layer is arranged above the mask M, the plating layer will penetrate through the gap to the display surface, the non-display surface or the side surface of the display panel 10' to form a conductive island mm, which is extremely likely to connect the two adjacent side traces 13a1, thereby causing the areas that should be insulated from each other to be conductive to each other, resulting in short circuit. For example, under normal circumstances, the thickness of the front trace 101 and the back trace 102 of the display panel 10' is in the range of 500-600 nm, and when the thickness of the conductive island reaches about 50 nm, short circuit may occur, and the short circuit condition of the back trace 102 on the display panel 10' is as shown in Figure 5 , and Figure 5In the diagram, different colored and shaped film layers are sequentially connected to represent the entire back-side trace 102. The different shapes represent different conductive layers, which are located on different film layers. An insulating layer is provided between adjacent conductive layers, and the different conductive layers are electrically connected through vias. The short-circuit condition of the side trace 13a1 is shown below. Figure 6 As shown. Especially in high-resolution or small-sized display products, the spacing between the side traces of the display panel 10' is small, making it easier for the plating to penetrate and cause short circuits. When this problem occurs, the location of the conductive island can be etched by laser irradiation to break the short circuit. However, this repair method also has the problem of accidentally damaging the normal trace pattern with the laser.

[0070] This disclosure provides a display panel 10 in some embodiments. For example, the display panel 10 is a Micro LED display panel or a mini LED display panel.

[0071] like Figure 7 and Figure 9 As shown, the display panel 10 includes: a back plate 1, multiple back traces 121, multiple side traces 13a1, and multiple blocking parts 2.

[0072] like Figure 7 As shown, the back panel 1 includes a display surface 11, a non-display surface 12, and a plurality of side surfaces 13 for connecting the display surface 11 and the non-display surface 12, wherein one of the side surfaces 13 is a selected side surface 13a.

[0073] like Figure 8A As shown, multiple back traces 121 are spaced apart on the non-display surface 12, and each back trace 121 includes a first segment 121a and a second segment 121b. Figure 8A and Figure 8B As shown, in some embodiments, there is an included angle between the first line segment 121a and the second line segment 121b, and they are arranged adjacent to each other. The lengths of the multiple first line segments 121a in their extension directions may be different, and the ends of the multiple first line segments 121a connected to the corresponding second line segments 121b may not be on the same straight line in the extension direction perpendicular to the first line segment 121a. The first line segments 121a of the multiple back traces 121 are arranged in parallel, and the second line segments 121b of the multiple back traces 121 are arranged approximately in parallel. The spacing between any two adjacent second line segments 121b of the multiple back traces 121 is approximately the same. Furthermore, the ends of the first line segments 121a of the multiple back traces 121 that are close to the selected side surface 13a have a distance D greater than 0 from the selected side surface 13a, for example, a distance D of 20μm to 100μm, such as 70μm or 80μm.

[0074] See you againFigure 8A The second segment 121b of each back surface trace 121 is connected with a binding terminal 121d at one end away from the first segment 121a, which is used to connect with an external circuit board to receive the electrical signal output by the external circuit board.

[0075] A plurality of side surface traces 13a1 are arranged at intervals on the selected side surface 13a, one end of each side surface trace 13a1 is located on the display surface 11, and the other end is located on the non-display surface 12, as shown in Figure 9 The end of each side surface trace 13a1 located on the non-display surface 12 is electrically connected with the first segment 121a; the side surface trace 13a1 is used to connect the traces on the display surface 11 and the non-display surface 12 to achieve the narrow frame requirement of the display device. The extension direction of the first segment 121a is the same as the extension direction of the part of the side surface trace 13a1 located on the non-display surface 12, and the extension direction of the second segment 121b intersects with the extension direction of the first segment 121a, see again Figure 8B The extension direction of the first segment 121a located on the non-display surface 12 is the same as the extension direction of the part of the side surface trace 13a1 located on the non-display surface 12, which realizes the overlap of the end of the side surface trace 13a1 and the end of the first segment 121a. The length L2 of the part of the side surface trace 13a1 located on the non-display surface 12 is slightly greater than the distance D, for example, the length L2 can be 200 μm, so as to ensure the reliable connection of the side surface trace 13a1 and the corresponding first segment 121a.

[0076] As shown in Figure 8B and Figure 10 A plurality of blocking parts 2 are arranged on the non-display surface 12, and one blocking part 2 is arranged between any two adjacent first segments 121a. One blocking part 2 is arranged between any two adjacent first segments 121a, and the blocking part 2 is arranged at the end of the first segment 121a at the connection between the first segment 121a and the second segment 121b.

[0077] The blocking part 2 is arranged between the first segments 121a of any two adjacent back surface traces 121, and the blocking part 2 is located at the end of the first segment 121a away from the selected side surface 13a. When laser is used to etch the conductive island mm between the metal layer to be formed into the side surface trace or the side surface trace 13a1, the blocking part 2 can block the laser LASER, and the blocking part 2 itself can act as a sacrificial layer for laser etching, effectively protecting the back surface trace 121 from etching damage by the laser LASER, preventing further corrosion of the circuit film layer due to damage by the laser LASER, and improving the quality of the product.

[0078] In some embodiments, referring to 8B again, the blocking portion 2 comprises an insulating material, and exemplarily, the blocking portion 2 can adopt resin. When the blocking portion 2 adopts the insulating material, the blocking portion 2 can be in direct contact with the adjacent first line segment 121a.

[0079] In some embodiments, as shown in Figure 10 , when the blocking portion 2 adopts the insulating material, the blocking portion 2 can not be in contact with the first line segment 121a.

[0080] In some embodiments, the contour shape of the orthographic projection of the blocking portion 2 on the non-display surface 12 comprises a rectangle, a square, a trapezoid or a triangle. The contour shape of the orthographic projection of the blocking portion 2 on the non-display surface 12 is not limited to the above examples, and the blocking portion 2 can block the laser light.

[0081] In some embodiments, when the blocking portion 2 adopts the insulating material and the blocking portion 2 is in contact with the first line segment 121a, referring to Figure 8B , the contour shape of the orthographic projection of the blocking portion 2 on the non-display surface 12 is a rectangle. As shown in Figure 11 , the contour shape of the orthographic projection of the blocking portion 2 on the non-display surface 12 is a square. The interval between the adjacent two first line segments 121a can be different. Therefore, the blocking portion 2 arranged between the adjacent two first line segments 121a in the form of a square can have different sizes when the blocking portion 2 is in contact with the adjacent two first line segments 121a. For example, Figure 11 , the interval between the two middle first line segments 121a is smaller, and the square blocking portion 2 arranged therebetween is smaller. As shown in Figure 12 , the contour shape of the orthographic projection of the blocking portion 2 on the non-display surface 12 is a trapezoid, wherein the upper base of the trapezoid is closer to the selected side surface 13a than the lower base. In addition, since the interval between the adjacent two first line segments 121a can be different, the size of the blocking portion 2 in the form of a trapezoid arranged between the adjacent two first line segments 121a can be different. As shown in Figure 13 , the contour shape of the orthographic projection of the blocking portion 2 on the non-display surface 12 is a triangle, wherein the vertex of the triangle is closer to the selected side surface 13a than the opposite side of the vertex. The above examples of the contour shape of the orthographic projection of the blocking portion 2 on the non-display surface 12 are not limited to the above examples, and the blocking portion 2 can block the laser light. It should be noted that since the width of the first line segment 121a of different back surface traces 121 in the direction perpendicular to the extension direction of the first line segment 121a is different, and the interval between the first line segments 121a of the adjacent two back surface traces 121 is different, the size of the blocking portion 2 arranged between the adjacent two first line segments 121a can be different, but the shape is similar.

[0082] It should be noted that, for the trapezoidal blocking part 2, as shown in Figure 12 , the upper base of the trapezoid can be close to the selected side surface 13a relative to the opposite side, or the lower base of the trapezoid can be close to the selected side surface 13a relative to the opposite side, and the setting mode of the trapezoid is not limited; similarly, as shown in Figure 13 , the contour shape of the orthographic projection of the blocking part 2 on the non-display surface 12 is a triangle, and the vertex of the triangle can be close to the selected side surface 13a relative to the opposite side, or the vertex of the triangle can be away from the selected side surface 13a relative to the opposite side, and the blocking layer 2 can block the laser.

[0083] In some embodiments, the blocking part 2 is made of an insulating material, and the blocking part 2 does not contact the first line segment 121a, and the contour shape of the orthographic projection of the blocking part 2 on the non-display surface 12 is a rectangle, as shown in Figure 10 ; and the contour shape of the orthographic projection of the blocking part 2 on the non-display surface 12 can also include a square, a trapezoid, or a triangle, which will not be described here.

[0084] In some embodiments, the blocking part 2 is made of a metal material, and the blocking part 2 can be made of at least one of copper, aluminum, silver, and gold, for example, the blocking part 2 is made of copper, or silver, or a copper-aluminum alloy, etc. As shown in Figure 14 , in the case of the blocking part 2 made of a metal material, in order to avoid the short circuit of the back surface line 121 caused by the overlapping of the blocking layer 2 and the first line segment 121a, the blocking part 2 has a spacing with the adjacent first line segment 121a; the ratio of the distance d1 between the blocking part 2 and the adjacent first line segment 121a to the distance dd between the two adjacent first line segments 121a where the blocking part 2 is located is greater than 1:3, where the distance dd refers to the distance between the projections on the non-display surface 12 of the opposite side surfaces of the two adjacent first line segments 121a, and the distance d1 refers to the distance between the projections on the non-display surface 12 of the two opposite side surfaces of the blocking part 2 and the adjacent first line segment 121a. As shown in Figure 14 , when the distance dd between the two adjacent first line segments 121a is 60 μm, the distance d1 between the blocking part 2 and the first line segment 121a can be set to 25 μm. The ratio of the distance d1 between the blocking part 2 and the adjacent first line segment 121a to the distance dd between the two adjacent first line segments 121a where the blocking part 2 is located is greater than 1:3, which can not only avoid the short circuit caused by the connection of the first line segment 121a due to the blocking layer 2, but also block the laser LASER from etching the back surface line 121.

[0085] In some embodiments, in the case where the blocking portion 2 is made of a metal material, the outline shape of the orthogonal projection of the blocking portion 2 on the non-display surface 12 includes a rectangle, a square, a trapezoid, or a triangle.

[0086] In some embodiments, referring again to Figure 14 , in the case where the blocking portion 2 is made of a metal material, the outline shape of the orthogonal projection of the blocking portion 2 on the non-display surface 12 is a rectangle; as Figure 15 illustrated, the outline shape of the orthogonal projection of the blocking portion 2 on the non-display surface 12 is a square; as Figure 16 illustrated, the outline shape of the orthogonal projection of the blocking portion 2 on the non-display surface 12 is a trapezoid, in which the upper base of the trapezoid is closer to the selected side surface 13a than the lower base; as Figure 17 illustrated, the outline shape of the orthogonal projection of the blocking portion 2 on the non-display surface 12 is a triangle, in which the vertex of the triangle is closer to the selected side surface 13a than the opposite side to which the vertex is opposite. The above description is merely an example of the outline shape of the orthogonal projection of the blocking portion 2 on the non-display surface 12, and is not limited thereto, as long as the blocking portion 2 can block the laser. At this time, the spacing d1 between the blocking portion 2 and the adjacent first line segment 121a refers to the shortest distance between the two surfaces of the blocking portion 2 and the adjacent first line segment 121a opposite to each other. It should be noted that, since the first line segments 121a of different back surface traces 121 have different widths in the direction perpendicular to the extension direction thereof, and the spacing between the first line segments 121a of two adjacent back surface traces 121 is different, the size of the blocking portion 2 located between different adjacent first line segments 121a can be different, but the shape is similar.

[0087] In some embodiments, as Figure 18A and Figure 18B illustrated, the distance d2 between the surface bm1 of the blocking portion 2 away from the non-display surface 12 and the non-display surface 12 is greater than the distance d3 between the surface bm2 of the first line segment 121a away from the non-display surface 12 and the non-display surface 12.

[0088] In some embodiments, in the case where the blocking portion 2 is made of an insulating material and the blocking portion 2 is in contact with the first line segment 121a, as Figure 18A illustrated, the distance d2 between the surface bm1 of the blocking portion 2 away from the non-display surface 12 and the non-display surface 12 is greater than the distance d3 between the surface bm2 of the first line segment 121a away from the non-display surface 12 and the non-display surface 12 by 0.4 μm to 0.6 μm, for example, the distance d2 is greater than the distance d3 by 0.5 μm, or the distance d2 is greater than the distance d3 by 0.6 μm, or the distance d2 is greater than the distance d3 by 0.4 μm, which is not limited in the present disclosure.

[0089] In some embodiments, in the case where the blocking portion 2 is made of a metal material, as Figure 18BAs shown, the distance d2 between the surface bm1 of the blocking portion 2 away from the non-display surface 12 is greater than the distance d3 between the surface bm2 of the first linear segment 121a away from the non-display surface 12 by 0.4-0.6 μm, for example, the distance d2 is greater than the distance d3 by 0.5 μm, or the distance d2 is greater than the distance d3 by 0.6 μm, or the distance d2 is greater than the distance d3 by 0.4 μm, which is not limited in the present disclosure.

[0090] The distance d2 between the surface bm1 of the blocking portion 2 away from the non-display surface 12 is greater than the distance d3 between the surface bm2 of the first linear segment 121a away from the non-display surface 12 by 0.4-0.6 μm, which can fully protect the back surface trace 121 from laser etching damage during the entire process of forming the side surface trace 13a1 of the metal layer by laser etching process, or repairing the conductive island mm between the side surface traces 13a1 by laser etching.

[0091] In some embodiments, as shown in Figure 19A and 19B The display panel 10 further includes a plurality of isolation portions 3 disposed on the non-display surface 12, the end of the first linear segment 121a close to the selected side surface 13a is used to overlap with the end 13aa of the side surface trace 13a1 on the non-display surface 12, which is referred to as a connecting portion 121c of the first linear segment 121a close to the selected side surface 13a. It can be understood that the connecting portion 121c is a part of the first linear segment 121a, and each first linear segment 121a is electrically connected to the end 13aa of the side surface trace 13a1 on the non-display surface 12 through the connecting portion 121c. It can be understood that the projection of the connected connecting portion 121c and the end 13aa of the side surface trace 13a1 on the non-display surface 12 of the display panel 10 overlaps or partially overlaps. An isolation portion 3 is disposed between the two adjacent connecting portions 121c. For example, an isolation portion 3 is disposed between the two adjacent connecting portions 121c, the isolation portion 3 includes an insulating material, and the isolation portion 3 has a spacing d4 between the adjacent connecting portions 121c. Exemplarily, the ratio of the distance between the isolation portion 3 and the adjacent connecting portion 121c to the distance between the two adjacent connecting portions 3 where the blocking portion 2 is located is greater than 1:3.

[0092] Again referring to Figure 19BEach first segment 121a is electrically connected to the end 13aa of the non-display surface 12 through the connecting portion 121c and the side surface trace 13a1. An isolation portion 3 made of an insulating material is arranged between two adjacent connecting portions 121c. The isolation portion 3 has a distance d4 from the adjacent connecting portion 121c. The distance d4 is the shortest distance between the projection of the side surface of the isolation portion 3 on the non-display surface 12 and the adjacent connecting portion 121c. The distance between two adjacent connecting portions 121c is marked as dd'. In some embodiments, the distance dd' between two adjacent connecting portions 121c is equal to the distance dd between two adjacent first segments 121a.

[0093] The isolation portion 3 made of an insulating material is arranged between two adjacent connecting portions 121c. When the mask M is used to form the pattern of the side surface trace 13a1, the penetration of the film layer is blocked by the isolation portion 3, and the penetration of the film layer on both sides of the isolation portion 3 is prevented from being connected. The problem of short circuit of the first segment 121a caused by the penetration of the film layer is effectively blocked, the yield of the display panel is improved, and the step of etching and repairing the back surface trace 121 of the display panel 10 by laser in the later stage is further omitted. Only the laser repair of the conductive island mm between the side surface traces 13a1 of the display panel 10 is needed. The isolation portion 3 cooperates with the blocking portion 2 arranged between the first segments 121a to avoid damage to the back surface trace 121 of the display panel 10 caused by laser etching and repair, and to block the short circuit of the connecting portion 121c of the first segment 121a caused by the penetration of the sputtering layer. The product quality of the display panel 10 is improved.

[0094] In some embodiments, referring again to Figure 19B When the distance dd' between two adjacent connecting portions 121c is 65 μm, the distance d4 between the isolation portion 3 and the adjacent connecting portion 121c can be set to 25 μm. The ratio of the distance between the isolation portion 3 and the adjacent connecting portion 121c to the distance between the two adjacent connecting portions 3 where the blocking portion 2 is located is greater than 1:3. The problem of short circuit of the connecting portion 121c of the first segment 121a caused by the penetration of the sputtering layer can be effectively avoided.

[0095] In some embodiments, one end of the isolation portion 3 extends to the intersection of the non-display surface 12 and the selected side surface 13a. Referring again to Figure 19BThe extending direction of the isolation portion 3 is the same as the extending direction of the first line segment 121a, one end of the isolation portion 3 extends to the intersection line of the non-display surface 12 and the selected side surface 13a, and the isolation portion 3 protects the first line segment 121a connecting portion 121c and the side surface trace 13a1 on the extending portion of the non-display surface 12, so that the non-display surface 12 of the display panel 10 does not have a line short circuit problem caused by plating layer penetration.

[0096] In some embodiments, as shown in Figure 19B and Figure 20 , the blocking portion 2 and the isolation portion 3 located between the two adjacent first line segments 121a are connected.

[0097] In some embodiments, in the case where the blocking portion 2 is made of insulating material, the connected blocking portion and isolation portion are an integral structure. The blocking portion 2 and the isolation portion 3 can be made of the same material, for example, the same resin material, and the connected blocking portion 2 and isolation portion 3 can be formed into an integral structure by one photoetching process.

[0098] In some embodiments, in the case where the blocking portion 2 is made of insulating material, the blocking portion 2 can be in contact with the adjacent first line segment 121a, and the contour shape of the orthogonal projection of the blocking portion 2 on the non-display surface 12 can adopt different shapes, for example, a rectangle, a square, a trapezoid, or a triangle, which will not be described here again. As shown in Figure 20 , the blocking portion 2 and the isolation portion 3 located between the two adjacent first line segments 121a are connected, the blocking portion 2 is in contact with the adjacent first line segment 121a, and the contour shape of the orthogonal projection of the blocking portion 2 on the non-display surface 12 adopts a rectangle.

[0099] In some embodiments, referring again to Figure 20 , the width k1 of the blocking portion 2 in the first direction is greater than the width k2 of the isolation portion 3 in the first direction, the first direction is perpendicular to the extending direction of the first line segment 121a, the width k1 of the blocking portion 2 in the first direction is the size of the projection of the blocking portion 2 on the non-display surface 12 in the first direction, and the width k2 of the isolation portion 3 in the first direction is the size of the projection of the isolation portion 3 on the non-display surface 12 in the first direction. For example, the blocking portion 2 and the isolation portion 3 can be integrally formed into a T-shaped structure, and when the blocking portion 2 is made of insulating material and in contact with the adjacent first line segment 121a, the width k1 of the blocking portion 2 in the first direction can be equal to the distance dd between the two adjacent first line segments 121a.

[0100] In some embodiments, as shown in Figs. 1 and 2, the barrier portion 2 is made of an insulating material, the barrier portion 2 and the isolation portion 3 located between two adjacent first line segments 121a are connected, the barrier portion 2 is not in contact with the first line segment 121a adjacent thereto, and the contour shape of the barrier portion 2 in the orthographic projection on the non-display surface 12 is a rectangle. Figure 21 In some embodiments, as shown in Figs. 1 and 2, the barrier portion 2 is made of an insulating material, the barrier portion 2 and the isolation portion 3 located between two adjacent first line segments 121a are connected, the barrier portion 2 is not in contact with the first line segment 121a adjacent thereto, and the contour shape of the barrier portion 2 in the orthographic projection on the non-display surface 12 is a rectangle.

[0101] In some embodiments, as shown in Figs. 1 and 2, the barrier portion 2 is made of an insulating material, the barrier portion 2 and the isolation portion 3 located between two adjacent first line segments 121a are connected, the barrier portion 2 is not in contact with the first line segment 121a adjacent thereto, and the contour shape of the barrier portion 2 in the orthographic projection on the non-display surface 12 is a rectangle. Figure 22 In some embodiments, as shown in Figs. 1 and 2, the barrier portion 2 is made of an insulating material, the barrier portion 2 and the isolation portion 3 located between two adjacent first line segments 121a are connected, the barrier portion 2 is not in contact with the first line segment 121a adjacent thereto, and the contour shape of the barrier portion 2 in the orthographic projection on the non-display surface 12 is a rectangle.

[0102] In some embodiments, as shown in Figs. 1 and 2, the barrier portion 2 is made of an insulating material, the barrier portion 2 and the isolation portion 3 located between two adjacent first line segments 121a are connected, the barrier portion 2 is not in contact with the first line segment 121a adjacent thereto, and the contour shape of the barrier portion 2 in the orthographic projection on the non-display surface 12 is a rectangle. Figure 23 and Figure 24 In some embodiments, as shown in Figs. 1 and 2, the barrier portion 2 is made of an insulating material, the barrier portion 2 and the isolation portion 3 located between two adjacent first line segments 121a are connected, the barrier portion 2 is not in contact with the first line segment 121a adjacent thereto, and the contour shape of the barrier portion 2 in the orthographic projection on the non-display surface 12 is a rectangle.

[0103] In some embodiments, as shown in Figs. 1 and 2, the barrier portion 2 is made of an insulating material, the barrier portion 2 and the isolation portion 3 located between two adjacent first line segments 121a are connected, the barrier portion 2 is not in contact with the first line segment 121a adjacent thereto, and the contour shape of the barrier portion 2 in the orthographic projection on the non-display surface 12 is a rectangle. Figure 23As shown, the contour shape of the front projection of the blocking part 2 on the non-display surface 12 adopts a triangle, wherein the vertex of the triangle is close to the selected side surface 13a relative to the opposite side of the vertex, the blocking part 2 is in contact with the first line segment 121a adjacent thereto, and the blocking part 2 and the isolation part 3 between the adjacent two first line segments 121a are not in contact.

[0104] In yet some embodiments, in the case that the blocking part 2 adopts an insulating material, the blocking part 2 can not be in contact with the first line segment 121a adjacent thereto, the blocking part 2 and the isolation part 3 between the adjacent two first line segments 121a can not be in contact, and the contour shape of the front projection of the blocking part 2 on the non-display surface 12 can adopt different shapes, exemplarily, can be a rectangle, a square, a trapezoid or a triangle, which will not be described herein again. As shown, Figure 24 As shown, the blocking part 2 can not be in contact with the first line segment 121a adjacent thereto, the blocking part 2 and the isolation part 3 between the adjacent two first line segments 121a can not be in contact, and the contour shape of the front projection of the blocking part 2 on the non-display surface 12 adopts a triangle.

[0105] In yet some embodiments, in the case that the blocking part 2 adopts an insulating material, the blocking part 2 can not be in contact with the first line segment 121a adjacent thereto, the blocking part 2 and the isolation part 3 between the adjacent two first line segments 121a can not be in contact, and the contour shape of the front projection of the blocking part 2 on the non-display surface 12 can adopt different shapes, exemplarily, can be a rectangle, a square, a trapezoid or a triangle, which will not be described herein again. As shown, Figure 25 As shown, the blocking part 2 can not be in contact with the first line segment 121a adjacent thereto, the blocking part 2 and the isolation part 3 between the adjacent two first line segments 121a can not be in contact, and the contour shape of the front projection of the blocking part 2 on the non-display surface 12 adopts a triangle.

[0106] In some embodiments, as shown, Figure 26 and Figure 27 As shown, the distance d5 between the surface bm3 of the isolation part 3 away from the non-display surface 12 and the non-display surface 12 is greater than or equal to the distance d6 between the surface bm4 of the connecting part 121c away from the non-display surface 12 and the non-display surface 12.

[0107] When the mask plate M is used to form the pattern of the side surface trace 13a1, since the distance d5 between the surface bm3 of the isolation part 3 away from the non-display surface 12 and the non-display surface 12 is greater than or equal to the distance d6 between the surface bm4 of the connecting part 121c away from the non-display surface 12 and the non-display surface 12, the mask plate M and the isolation part 3 are closely attached, the penetration of the plating layer can be effectively blocked, the blocking effect of the isolation part 3 is further improved, and the yield of the display panel is improved.

[0108] In some examples, as shown, Figure 26As shown, the distance d5 between the surface bm3 of the isolation portion 3 away from the non-display surface 12 and the non-display surface 12 is equal to the distance d6 between the surface bm4 of the connecting portion 121c away from the non-display surface 12 and the non-display surface 12.

[0109] In some examples, as shown in FIG. 1, the display panel 10 includes a plurality of light emitting devices 1002 arranged on the display surface 11, for example, the light emitting devices are Micro LED chips or mini LED chips. Figure 27 As shown, the distance d5 between the surface bm3 of the isolation portion 3 away from the non-display surface 12 and the non-display surface 12 is greater than the distance d6 between the surface bm4 of the connecting portion 121c away from the non-display surface 12 and the non-display surface 12. In some embodiments, the surface bm4 of the connecting portion 121c away from the non-display surface 12 can be the same surface as the surface bm2 of the first line segment 121a away from the non-display surface 12.

[0110] In some examples, as shown in FIG. 1, the display panel 10 includes a plurality of light emitting devices 1002 arranged on the display surface 11, for example, the light emitting devices are Micro LED chips or mini LED chips. Figure 28 As shown, the display panel 10 includes a plurality of light emitting devices 1002 arranged on the display surface 11, for example, the light emitting devices are Micro LED chips or mini LED chips.

[0111] The display panel 10 further includes a first protective layer 1003 and a second protective layer 1004. The first protective layer 1003 covers the plurality of side surface wirings 13a1, and is arranged on a side of the plurality of side surface wirings 13a1 away from the back plate 1. For example, the first protective layer 1003 can fill the gap regions of the plurality of side surface wirings 13a1 and cover the surfaces of the plurality of side surface wirings 13a1. The first protective layer 1003 can play a role of electrical insulation and protection against oxygen corrosion, so as to avoid damage to the plurality of side surface wirings 13a1 from the outside, such as peeling, disconnection, oxidation, and the like, and prolong the service life of the display panel 10. As shown in the cross-sectional view of the display panel 10, the plurality of side surface wirings 13a1 are in a U shape, and thus the first protective layer 1003 is also in a U shape.

[0112] The second protective layer 1004 is arranged on a side of the first protective layer 1003 away from the side surface wirings 13a1, and covers the film layers of the display surface 11, the first protective layer 1003, and the back surface wiring 121 of the display panel 10. The second protective layer 1004 can further protect the plurality of side surface wirings, and form protection for the wirings of the display surface 11 and the back surface wiring 121.

[0113] In some embodiments, the second protective layer 1004 on the display surface 11 can be a black adhesive layer, for example, the material of the black adhesive layer is black silicone or black resin. In some examples, the black adhesive layer covering part of the plurality of light emitting devices is thinner than other parts, so as to protect the film layers of the display surface 11 without affecting the light emitting effect of the light emitting devices.

[0114] To prevent the metal layer from being formed into a plurality of side traces by using the laser etching process, and to prevent the laser LASER from damaging the back side trace 121 of the display panel 10 when repairing the side trace 13a1 of the display panel 10 by using the laser LASER, an alternative solution is provided as follows:

[0115] As shown in Figure 30 , some embodiments of the present disclosure also provide a display panel, which comprises a back plate 1, a plurality of back side traces 121 and a plurality of side traces 13a1, and the specific structure of the back plate 1, the plurality of back side traces 121 and the plurality of side traces 13a1 is as described above, and will not be repeated here. Wherein, the first segment 121a of the plurality of back side traces 121 is away from the range of the focal depth of the laser when etching the plurality of side traces 13a1 by using the laser.

[0116] By extending the first segment 121a of the display panel 10 which is not on the display surface 12, the first segment 121a is away from the range of the focal depth of the laser when etching the side trace 13a1 by using the laser, which can effectively avoid the damage to the back side trace caused by the laser etching to form the side trace 13a1.

[0117] In some embodiments, as shown in Figure 29 and Figure 30 , the irradiation direction of the laser LASER is parallel to Y, and the moving path L1 of the laser is parallel to the X axis. When etching by using the laser, the display panel 10 is rotated by a certain angle, for example, the display surface 11 of the display panel 10 is arranged to have an angle β with the Y axis, and an angle (90°+β) with the X axis, wherein β is not more than 3°, for example, it can be 1°, so that the film layer on the display surface 11 of the display panel 10 will not be irradiated by the laser, and the damage to the film layer on the display surface 11 can be avoided, thereby the reliability of the display surface 11 can be ensured. By extending the first segment 121a of the back side trace 121 of the display panel 10, the first segment 121a is away from the range of the focal depth of the laser when etching the plurality of side traces 13a1 by using the laser, that is, the first segment 121a is away from the boundary line LL that can be irradiated by the laser LASER on the non-display surface 12 of the display panel 10, so that the second segment 121b will not be irradiated and damaged by the laser, so that the film layer on the display surface 11 and the film layer on the non-display surface of the display panel 10 can be protected from being damaged by the laser at the same time.

[0118] Again referring to Figure 29 and Figure 30The boundary LL that the laser LASER can illuminate on the non-display surface 12 of the display panel 10 refers to the boundary that the laser LASER can illuminate from the farthest point of the intersection between the non-display surface 12 and the selected side surface 13a. The position of this boundary LL is related to the angle β and the size range L1 of the laser LASER in its moving direction X. For example, the moving direction X of the laser LASER is perpendicular to its light emission direction Y.

[0119] The determination of the movement range L1 of the laser LASER in the movement direction X is related to the length L2 of the side trace 13a1 located on the non-display surface 12.

[0120] Therefore, by using the length L2 of the side trace 13a1 on the non-display surface 12, the movement range L1 of the laser LASER in the movement direction X is determined. By using the movement range L1 of the laser LASER in the movement direction X and the angle β, the boundary line LL that the laser LASER can illuminate on the non-display surface 12 of the display panel 10 is determined. The area of ​​the boundary line LL close to the intersection of the non-display surface 12 and the selected side surface 13a is the laser focal depth range, and the area of ​​the boundary line LL far away from the intersection of the non-display surface 12 and the selected side surface 13a is the laser focal depth range. By configuring the connection position of the first line segment 121a and the second line segment 121b in the laser focal depth range, that is, the area of ​​the boundary line LL far away from the intersection of the non-display surface 12 and the selected side surface 13a, damage to the back trace 121 can be avoided when the laser LASER etches or repairs the side trace 13a1.

[0121] In some embodiments, for such Figure 19B The solution shown is to set the blocking part 2 to avoid laser damage. The position of the blocking part 2 is related to the laser focal depth range. In some instances, the blocking part 2 can be set within the laser focal depth range to provide further protection for the back trace 121.

[0122] On the other hand, a display device 100 is provided, such as Figure 31 As shown, the display device 100 includes the aforementioned display panel 10 and also includes a driving circuit 1001, which is electrically connected to the back trace 121.

[0123] In some embodiments, the drive circuit 1001 is electrically connected to the back trace 121 via a flexible circuit board.

[0124] The beneficial effects of the display device 100 provided in this disclosure are the same as those of the embodiment of the display panel 10 provided in the first aspect of this disclosure, and will not be repeated here.

[0125] On the other hand, a splicing display device 1000 is provided, such as Figure 32As shown, the display device 100 includes a plurality of display devices 100, and the plurality of display devices 100 are assembled to form a tiled display device 1000.

[0126] The beneficial effects of the tiled display device 1000 provided by the present disclosure are the same as those of the embodiments of the display panel 10 provided by the first aspect of the present disclosure, which will not be repeated here.

[0127] The above merely provides a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art should understand that any changes or replacements within the technical scope of the present disclosure should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A display panel, comprising: A back panel, the back panel including a display surface, a non-display surface and a plurality of side surfaces for connecting the display surface and the non-display surface, wherein one of the side surfaces is a selected side surface; Multiple back traces are spaced apart on the non-display surface, and each back trace includes a first segment and a second segment; Multiple side traces are spaced apart on the selected side surface, with one end of each side trace located on the display surface and the other end located on the non-display surface; each side trace is electrically connected to the first line segment; the extension direction of the first line segment is the same as the extension direction of the end of the side trace located on the non-display surface, and the extension direction of the second line segment intersects with the extension direction of the first line segment. Multiple blocking parts are provided on the non-display surface, with one blocking part provided between two adjacent first line segments; The blocking part is located within the laser focal depth range when laser etching multiple side traces, and the blocking part is used to prevent damage to the back traces when laser etching forms the side traces.

2. The display panel according to claim 1, wherein, The material of the blocking part includes insulating material.

3. The display panel according to claim 2, wherein, The material of the blocking part includes resin.

4. The display panel according to any one of claims 1 to 3, wherein, The blocking part comes into contact with the adjacent first line segment.

5. The display panel according to claim 1, wherein, The material of the blocking part includes a metallic material, and there is a gap between the blocking part and the adjacent first line segment.

6. The display panel according to claim 5, wherein, The ratio of the distance between the blocking part and the adjacent first line segment to the distance between the two adjacent first line segments containing the blocking part is greater than 1:

3.

7. The display panel according to claim 5 or 6, wherein, The material of the blocking part includes at least one of copper, aluminum, silver and gold.

8. The display panel according to claim 1, wherein, The distance between the surface of the blocking portion away from the non-display surface and the non-display surface is greater than the distance between the surface of the first line segment away from the non-display surface and the non-display surface.

9. The display panel according to claim 8, wherein, The distance between the surface of the blocking portion away from the non-display surface and the non-display surface is 0.4 μm to 0.6 μm greater than the distance between the surface of the first line segment away from the non-display surface and the non-display surface.

10. The display panel according to claim 1, wherein, The outline shape of the obstruction portion as projected onto the non-display surface includes a rectangle, a square, a trapezoid, or a triangle.

11. The display panel according to claim 1, further comprising: Multiple isolation sections are disposed on the non-display surface; Each first line segment is electrically connected to the end of the side trace located on the non-display surface via a connecting part. An isolation part is provided between two adjacent connecting parts. The isolation part includes an insulating material and there is a gap between the isolation part and the adjacent connecting part.

12. The display panel according to claim 11, wherein, The ratio of the distance between the isolation part and the adjacent connecting part to the distance between the two adjacent connecting parts where the blocking part is located is greater than 1:

3.

13. The display panel according to claim 11 or 12, wherein, The isolation section extends to the intersection of the non-display surface and the selected side surface.

14. The display panel according to claim 11, wherein, The distance between the surface of the isolation portion away from the non-display surface and the non-display surface is greater than or equal to the distance between the surface of the first line segment away from the non-display surface and the non-display surface.

15. The display panel according to claim 14, wherein, The blocking and isolation parts located between two adjacent first segments are connected.

16. The display panel according to claim 15, wherein, When the blocking part is made of insulating material, the connected blocking part and the isolation part are an integral structure.

17. The display panel according to claim 16, wherein, The width of the blocking portion in the first direction is greater than the width of the isolating portion in the first direction, and the first direction is perpendicular to the extension direction of the first line segment.

18. The display panel according to claim 11, wherein, The blocking and isolating parts located between two adjacent first segments do not contact each other.

19. A display device, comprising: The display panel as described in any one of claims 1 to 18.

20. A splicing display device, comprising: Multiple display devices as described in claim 19, wherein the multiple display devices are spliced ​​and assembled.

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