Splicing display module and electronic device

Abstract

The application discloses a spliced display module and an electronic device, which comprises a first display panel and a second display panel; the first display panel comprises a first substrate and a first side edge trace; the first substrate is provided with a first surface and a first side face; the first surface is provided with a first pad; the first side edge trace is electrically connected with the first pad and extends along the first surface to cover at least part of the first side face; the second display panel comprises a second substrate and a second side edge trace; the second substrate is provided with a second surface and a second side face; the second surface is provided with a second pad and a first driving chip electrically connected with the second pad; the second side edge trace is electrically connected with the second pad and extends along the second surface to cover at least part of the second side face; the first display panel is spliced with the second display panel; the first side edge trace on the first side face is in contact with the second side edge trace on the second side face and is electrically connected. The application can improve the reliability of the side edge trace of the spliced display module and improve the product yield.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a splicing display module and electronic device. Background Technology

[0002] With the increasing demand for large-screen displays, various video wall display modules have emerged. Currently, video wall display modules can be created by splicing multiple sub-display panels together to form a large-screen display.

[0003] Micro-LEDs are widely used in the display technology field due to their advantages such as high brightness, good luminous efficiency, and low power consumption. Currently, by setting side traces on the side of the Micro-LED display panel to reduce the bezel width of each sub-display panel, the splicing seam between two adjacent sub-display panels is reduced.

[0004] However, the reliability issues of the side wiring in existing splicing display modules urgently need to be addressed. Summary of the Invention

[0005] The main technical problem solved by this application is to provide a splicing display module and electronic device that improves the reliability of the side wiring of the splicing display module, increases the product yield, and reduces the width of the splicing seam.

[0006] To solve the above-mentioned technical problems, one technical solution adopted in this application is: providing a splicing display module, including at least a first display panel and a second display panel; the first display panel includes: a first substrate and a first side trace, the first substrate having a first surface and a first side surface; the first surface having a first pad, the first side trace being electrically connected to the first pad and extending along the first surface to cover at least a portion of the first side surface; the second display panel includes: a second substrate and a second side trace, the second substrate having a second surface and a second side surface; the second surface having a second pad and a first driver chip electrically connected to the second pad, the second side trace being electrically connected to the second pad and extending along the second surface to cover at least a portion of the second side surface; wherein, the first display panel and the second display panel are spliced ​​together such that the first surface and the second surface are disposed opposite to each other, and the first side trace on the first side surface and the second side trace on the second side surface are in contact and electrically connected.

[0007] Preferably, the first substrate further includes a third surface disposed opposite to the first surface, and the first side trace extends to the junction of the third surface and the first side surface; the second substrate further includes a fourth surface disposed opposite to the second surface, and the second side trace extends to the junction of the fourth surface and the second side surface.

[0008] Preferably, the first side surface includes a first inclined surface, the dihedral angle formed by the first inclined surface and the first surface is an obtuse angle, and at least a portion of the first side traces are formed on the first inclined surface; the second side surface includes a second inclined surface, the dihedral angle formed by the second inclined surface and the second surface is an obtuse angle, and at least a portion of the second side traces are formed on the second inclined surface; wherein, when the first display panel and the second display panel are spliced ​​together, the first side traces located on the first inclined surface and the second side traces located on the second inclined surface are in contact and electrically connected.

[0009] Preferably, the first inclined surface and the second inclined surface are arranged parallel to each other.

[0010] Preferably, the areas of the first inclined plane and the second inclined plane are the same.

[0011] Preferably, the first substrate further includes a third surface disposed opposite to the first surface, and the first inclined surface connects the first surface and the third surface; the second substrate further includes a fourth surface disposed opposite to the second surface, and the second inclined surface connects the second surface and the fourth surface.

[0012] Preferably, the first side surface includes a first curved surface, at least a portion of the first side trace is formed on the first curved surface, and the dihedral angle between the tangent at the junction of the first curved surface and the first side surface and the first side surface is an obtuse angle; the second side surface includes a second curved surface, at least a portion of the second side trace is formed on the second curved surface, and the dihedral angle between the tangent at the junction of the second curved surface and the second side surface and the second side surface is an obtuse angle.

[0013] Preferably, the first curved surface and the second curved surface are matched in terms of concavity and convexity.

[0014] Preferably, the first substrate further includes a third surface disposed opposite to the first surface, and the first curved surface connects the first surface and the third surface; the second substrate further includes a fourth surface disposed opposite to the second surface, and the second curved surface connects the second surface and the fourth surface.

[0015] Preferably, the first substrate further comprises a third surface opposite to the first surface and a third side surface opposite to the first side surface. The third surface is provided with a third pad and a third driver chip electrically connected to the third pad. The first display panel further comprises a third side trace, which is electrically connected to the third pad and extends along the third surface to cover at least part of the third side surface. The second substrate further comprises a fourth surface opposite to the second surface and a fourth side surface opposite to the second side surface. The fourth surface is provided with a fourth pad. The second surface is also provided with a fifth pad and a second driver chip electrically connected to the fifth pad. The second display panel further comprises a fourth side trace disposed on the fourth side surface, with both ends of the fourth side trace electrically connected to the fourth pad and the fifth pad, respectively.

[0016] Preferably, the second display panel is the outermost display panel in the splicing display module, and the first display panel is the innermost display panel in the splicing display module.

[0017] Preferably, the fourth side surface is arranged perpendicular to the second surface.

[0018] Preferably, the second substrate further comprises a fourth surface opposite to the second surface and a fourth side surface opposite to the second side surface. A fourth pad is provided on the fourth surface. The second display panel further comprises a fourth side trace, which is electrically connected to the fourth pad and extends along the fourth surface to cover at least part of the fourth side surface.

[0019] Preferably, the first display panel is the outermost display panel in the splicing display module, and the second display panel is the innermost display panel in the splicing display module.

[0020] Preferably, the first substrate has a third surface opposite to the first surface and a third side surface opposite to the first side surface. The third surface has a third pad and a third driver chip electrically connected to the third pad. The first display panel further includes a third side trace, which is electrically connected to the third pad and extends along the third surface to cover at least a portion of the third side surface. The second substrate also has a fourth surface opposite to the second surface and a fourth side surface opposite to the second side surface. The fourth surface has a fourth pad. The second display panel further includes a fourth side trace, which is electrically connected to the fourth pad and extends along the fourth surface to cover at least a portion of the fourth side surface.

[0021] Preferably, the first display panel and the second display panel have the same structure.

[0022] Preferably, both the first display panel and the second display panel are the inner display panels in the splicing display module.

[0023] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide an electronic device, including at least one splicing display module and a light-emitting device in any embodiment.

[0024] The beneficial effects of this application are as follows: Unlike the prior art, the splicing display module provided in this application has a first side trace and a second side trace respectively on the two splicing surfaces of the two spliced ​​display panels. The two side traces are electrically connected by overlapping, so that the first driver chip bonded to the second surface of the second display panel can drive the first display panel spliced ​​with the second display panel through the overlapping second side trace and the first side trace. This application uses staggered driving so that the first side trace only needs to cover the first side and the first surface of the first substrate, and the second side trace only needs to cover the second side and the second surface of the second substrate. Both side traces have only one corner, reducing the probability of the side trace falling off or breaking at the corner, thereby improving the reliability of the side traces. At the same time, since the two display panels are electrically connected through the overlapping of the side traces, there is no need to set a protective layer for encapsulation on the side of the display panel, thereby reducing the splicing seam width and achieving seamless splicing. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of one embodiment of the splicing display module of this application;

[0026] Figure 2 This is a schematic diagram of another embodiment of the splicing display module of this application;

[0027] Figure 3 This is a schematic diagram of another embodiment of the splicing display module of this application;

[0028] Figure 4 This is a schematic diagram of another embodiment of the splicing display module of this application;

[0029] Figure 5 This is a schematic diagram of another embodiment of the splicing display module of this application;

[0030] Figure 6 This is a schematic diagram of another embodiment of the splicing display module of this application;

[0031] Figure 7 This is a schematic diagram of another embodiment of the splicing display module of this application;

[0032] Figure 8 This is a schematic diagram of one embodiment of the electronic device of this application. Detailed Implementation

[0033] To make the objectives, technical solutions, and effects of this application clearer and more explicit, the following detailed description is provided with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] In related technologies, the spliced ​​display panel has light-emitting elements on the front, a driver chip on the back, and side traces on the sides. The two ends of the side traces extend towards the front and back respectively, enabling the driver chip on the back to drive the light-emitting elements on the front to emit light. However, in these technologies, the side traces have corners at the junctions of the front and side, and the junctions of the back and side. The side traces at these corners have low reliability and insufficient adhesion, making them prone to detachment or breakage.

[0035] In view of this, see Figure 1 This application provides a splicing display module to solve the above-mentioned technical problems. The splicing display module 10 includes at least a first display panel 1 and a second display panel 2.

[0036] The first display panel 1 includes: a first substrate 11 and a first side trace 12. The first substrate 11 is provided with a first surface 11a and a first side surface 11b. The first surface 11a is provided with a first pad 13 and a light-emitting device (not shown). The first side trace 12 is electrically connected to the first pad 13 and extends along the first surface 11a to cover at least part of the first side surface 11b.

[0037] The second display panel 2 includes: a second substrate 21 and a second side trace 22. The second substrate 21 has a second surface 21a and a second side surface 21b. The second surface 21a has a second pad 23 and a first driver chip 3 electrically connected to the second pad 23. The second side trace 22 is electrically connected to the second pad 23 and extends along the second surface 21a to cover at least part of the second side surface 21b.

[0038] The first display panel 1 and the second display panel 2 are spliced ​​together so that the first surface 11a and the second surface 21a are set opposite to each other, the first side 11b and the second side 21b are set opposite to each other, and the first side trace 12 on the first side 11b and the second side trace 22 on the second side 21b are in contact and electrically connected.

[0039] The splicing display module 10 provided in this application has a first side trace 12 and a second side trace 22 respectively provided on the first side 11b and the second side 21b of the spliced ​​first display panel 1 and the second display panel 2. After the two display panels are spliced, the first side trace 12 and the second side trace 22 are electrically connected by overlapping, so that the first driving chip 3 bonded to the second surface 21a of the second display panel 2 can drive the light-emitting device on the first display panel 1 spliced ​​with the second display panel 2 to emit light through the overlapping second side trace 22 and the first side trace 12. This application utilizes a staggered driving mechanism to ensure that the first side trace 12 only needs to cover the first side surface 11b and the first surface 11a of the first substrate 11, and the second side trace 22 only needs to cover the second side surface 21b and the second surface 21a of the second substrate 21. The first side trace 12 has a corner only at the junction of the first side surface 11b and the first surface 11a, and the second side trace 22 has a corner only at the junction of the second side surface 21b and the second surface 21a. Since both side traces have only one corner, the probability of the side traces falling off or breaking at the corners is reduced, thereby improving the reliability of the side traces. At the same time, since the two display panels are electrically connected through the overlap of the side traces, there is no need to set a protective layer on the side of the display panel. Only the first side trace 12 located on the first surface 11a and the second side trace 22 located on the second surface 21a need to be provided with a protective layer, thereby reducing the splicing seam width and achieving seamless splicing.

[0040] Optionally, continue reading Figure 1 The first substrate 11 further includes a third surface 11c disposed opposite to the first surface 11a, and a first side trace 12 extends to the junction of the third surface 11c and the first side surface 11b; the second substrate 21 further includes a fourth surface 21c disposed opposite to the second surface 21a, the fourth surface being provided with a light-emitting device, and a second side trace 22 extending to the junction of the fourth surface 21c and the second side surface 21b. This arrangement ensures that the first side trace 12 and the second side trace 22 have sufficient contact area to guarantee their electrical connection. In other embodiments, the end of the first side trace 12 may only extend to cover the portion of the first side surface 11b, and the end of the second side trace 22 may only extend to cover the portion of the second side surface 21b, as long as the first side trace 12 and the second side trace 22 overlap when the first display panel 1 and the second display panel 2 are spliced ​​together, thus achieving overlap.

[0041] In this embodiment, the first side 11b is perpendicular to the first surface 11a, and the second side 21b is perpendicular to the second surface 21a, that is, the corner of the first side trace 12 and the second side trace 22 is a right angle.

[0042] To further reduce the risk of detachment and breakage of the first side wiring 12 and the second side wiring 22 at corners, in some embodiments, a chamfer can be provided at the corner.

[0043] In other embodiments, see Figure 2 The first side surface 11b includes a first inclined surface 111, the dihedral angle θ1 formed by the first inclined surface 111 and the first surface 11a is an obtuse angle, and the first side trace 12 is formed at least on the first inclined surface 111; the second side surface 21b includes a second inclined surface 211, the dihedral angle θ2 formed by the second inclined surface 211 and the second surface 21a is an obtuse angle, and the second side trace 22 is formed at least on the second inclined surface 211. When the first display panel 1 and the second display panel 2 are spliced ​​together, the first side trace 12 on the first inclined surface 111 and the second side trace 22 on the second inclined surface 211 are electrically connected. Optionally, the first inclined surface 111 and the second inclined surface 211 are arranged parallel to each other; optionally, the first inclined surface 111 and the second inclined surface 211 have the same area. Further, the first inclined surface 111 connects the first surface 11a and the third surface 11c; the second inclined surface 211 connects the second surface 21a and the fourth surface 21c.

[0044] Specifically, the first side 11b and the second side 21b may include one or more surfaces. In some embodiments, when the first side 11b and the second side 21b include only one surface, both the first side 11b and the second side 21b are inclined surfaces, and the included angle between the first side 11b and the first surface 11a and the included angle between the second side 21b and the second surface 21a are obtuse angles. This further reduces the probability of breakage and detachment at the corners of the first side trace 12 on the first side 11b and the first surface 11a, and the second side trace 22 on the second side 21b and the second surface 21a. In other embodiments, when the first side surface 11b and the second side surface 21b include multiple surfaces, the first inclined surface 111 is an inclined surface connected to the first surface 11a, and the second inclined surface 211 is an inclined surface connected to the second surface 21a. The included angle between the first inclined surface 111 and the first surface 11a, and the included angle between the second inclined surface 211 and the second surface 21a are both obtuse angles, further reducing the probability of breakage and detachment at the corners of the first side trace 12 on the first inclined surface 111 and the first surface 11a, and the second side trace 22 on the second inclined surface 211 and the second surface 21a.

[0045] In other embodiments, see Figure 3The first side surface 11b includes a first curved surface 112, and a first side trace 12 covers at least a portion of the first curved surface 112. The dihedral angle θ3 between the tangent at the intersection of the first curved surface 112 and the first surface 11a and the first surface 11a is an obtuse angle. The second side surface 21b includes a second curved surface 212, and a second side trace 22 covers at least a portion of the second curved surface 212. The first curved surface 112 and the second curved surface 212 are concave and convex, and the dihedral angle θ4 between the tangent at the intersection of the second curved surface 212 and the second surface 21a and the second surface 21a is an obtuse angle. In this embodiment, the first curved surface 112 is a concave surface, and the second curved surface 212 is a convex surface that matches the first curved surface 112. Alternatively, the first curved surface 112 can also be a convex surface, and the second curved surface 212 can be a matching concave surface, which can increase the contact area between the first side trace 12 and the second side trace 22 and improve the reliability at the corners of the side traces. Furthermore, the first curved surface 112 connects the first surface 11a and the third surface 11c; the second curved surface 212 connects the second surface 21a and the fourth surface 21c.

[0046] Optionally, a splicing display module 10 includes at least two display panels, see [reference]. Figure 1 , Figure 2 and Figure 3 The second substrate 21 also has a fourth side surface 21d disposed opposite to the second side surface 21b. A fourth pad 26 is disposed on the fourth surface 21c. The second surface 21a also has a fifth pad 25 and a second driving chip 4 electrically connected to the fifth pad 25. The second display panel 2 further includes a fourth side trace 24 disposed on the fourth side surface 21d. One end of the fourth side trace 24 extends to the second surface 21a and is electrically connected to the fifth pad 25, and the other end extends to the fourth surface 21c and is electrically connected to the fourth pad 26. The second driving chip 4 is used to drive the light-emitting devices on the fourth surface 21c of the second display panel 2 for display. Optionally, the fourth side surface 21d is perpendicular to the second surface 21a.

[0047] A splicing display module 10 includes at least two display panels, which can be used in some application scenarios, such as... Figure 1 , Figure 2 and Figure 3 As shown, only two display panels are included, and both display panels are located at the edge of the splicing display module 10; in other application scenarios, it can be as follows: Figure 4 As shown, the display includes four display panels, A, B, C, and D, arranged sequentially. Display panels A and D are located at the edge of the splicing display module 10, and display panels B and C are located at the edge of the splicing display module 10. In other application scenarios, it may also include three or more display panels arranged sequentially, or other numbers of display panels.

[0048] When the first display panel 1 and the second display panel 2 are respectively Figure 4 When referring to Display Panel A and Display Panel B, please refer to... Figure 5 The fourth surface 21c is further provided with a fourth pad 26. The second display panel 2 also includes a fourth side trace 24, which is electrically connected to the fourth pad 26. The fourth side trace 24 is disposed on the fourth surface 21c and extends to cover at least part of the fourth side surface 21d. Specifically, in this embodiment, the first display panel 1 is the outermost display panel in the splicing display module 10, and the second display panel 2 is the innermost display panel in the splicing display module 10. The fourth side trace 24 is used to overlap with the side trace of the adjacent C display panel, so that the driving chip of the C display panel can drive the light-emitting device on the fourth surface 21c of the B display panel to emit light and display.

[0049] When the first display panel 1 and the second display panel 2 are respectively Figure 4 When referring to the B and C display panels, please refer to... Figure 6 The third surface 11c is further provided with a third pad 15 and a third driver chip 5 electrically connected to the third pad 15. The first display panel 1 also includes a third side trace 14 electrically connected to the third pad 5, disposed on the third surface 11c and extending to cover at least a portion of the third side surface 11d; and the fourth surface 21c is further provided with a fourth pad 26. The second display panel 2 also includes a fourth side trace 24 electrically connected to the fourth pad 26, disposed on the fourth surface 21c and extending to cover at least a portion of the fourth side surface 21d. Specifically, in this embodiment, both the first display panel 1 and the second display panel 2 are... Figure 4 In the splicing display module 10, the inner display panels, namely the side of the first display panel 1 away from the second display panel 2 and the side of the second display panel 2 away from the first display panel 1, are also connected to other display panels. The first display panel 1 and the second display panel 2 have the same structure. The third side trace 14 is used to overlap with the side trace of the adjacent A display panel, so that the third driving chip 5 on the B display panel can drive the A display panel to display. The fourth side trace 24 is used to overlap with the side trace of the adjacent C display panel, so that the driving chip of the C display panel can drive the light-emitting device on the first surface 11a of the B display panel to emit light and display.

[0050] When the first display panel 1 and the second display panel 2 are respectively Figure 4 When referring to the C and D display panels, please refer to... Figure 7The third surface 11c is further provided with a third pad 15 and a third driver chip 5 electrically connected to the third pad 15. The first display panel 1 also includes: a third side trace 14 electrically connected to the third pad 5, disposed on the third surface 11c and extending to cover at least part of the third side surface 11d; and a fourth surface 21c is provided with a fourth pad 26, the second surface 21a is further provided with a fifth pad 25 and a second driver chip 4 electrically connected to the fifth pad 25. The second display panel 2 also includes: a fourth side trace 24 disposed on the fourth side surface 21d, one end of the fourth side trace 24 extending to the second surface 21a and electrically connected to the fifth pad 25, and the other end extending to the fourth surface 21c and electrically connected to the fourth pad 26. The first driver chip 3 is used to drive the light-emitting device on the first surface 11a of the first display panel 1 to emit light and display, the second driver chip 4 is used to drive the light-emitting device on the third surface 21c of the second display panel 2 to emit light and display, and the third driver chip 5 is used to drive the display panel on the side of the first display panel 1 away from the second display panel 2 to display.

[0051] It should be noted that, for a splicing display module 10, only the outermost edge of the display panel located at the edge has two corners on its side traces, and the display panel is driven by a driver chip bonded to the display surface of the display panel; the side traces on the other display panels each have only one corner, and each display panel is driven by a driver chip bonded to the adjacent display panel.

[0052] See Figure 8 This application also provides an electronic device 100, including at least one splicing display module 10 of any of the above embodiments. In this embodiment, multiple splicing display modules 10 are spliced ​​along the Y direction, and each splicing display module 10 is spliced ​​along the X direction to form a large splicing display device.

[0053] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A splicing display module, characterized in that, It includes at least a first display panel and a second display panel; The first display panel includes: a first substrate and a first side trace; the first substrate has a first surface and a first side surface; the first surface has a first pad; the first side trace is electrically connected to the first pad and extends along the first surface to cover at least a portion of the first side surface; The first side surface includes a first inclined surface, the dihedral angle formed by the first inclined surface and the first surface is an obtuse angle, and at least a portion of the first side edge routing is formed on the first inclined surface; or, The first side surface includes a first curved surface, at least a portion of the first side trace is formed on the first curved surface, and the dihedral angle between the tangent at the intersection of the first curved surface and the first surface and the first surface is an obtuse angle; The second display panel includes: a second substrate and a second side trace; the second substrate has a second surface and a second side surface; the second surface has a second pad and a first driver chip electrically connected to the second pad; the second side trace is electrically connected to the second pad and extends along the second surface to cover at least a portion of the second side surface. The second side surface includes a second inclined plane, the dihedral angle formed by the second inclined plane and the second surface is an obtuse angle, and at least a portion of the second side edge trace is formed on the second inclined plane; or, The second side surface includes a second curved surface, at least a portion of the second side trace is formed on the second curved surface, and the dihedral angle between the tangent at the intersection of the second curved surface and the second surface and the second surface is an obtuse angle; The first display panel and the second display panel are spliced ​​together so that the first surface and the second surface are set opposite to each other, and the first side trace located on the first inclined surface or the first curved surface is in contact with the second side trace located on the second inclined surface or the second curved surface and is electrically connected; the first driving chip can drive the light-emitting device on the first display panel to emit light through the overlapping second side trace and the first side trace.

2. The splicing display module according to claim 1, characterized in that, The first substrate further includes a third surface disposed opposite to the first surface, and the first side trace extends to the junction of the third surface and the first side surface; The second substrate further includes a fourth surface disposed opposite to the second surface, and the second side trace extends to the junction of the fourth surface and the second side surface.

3. The splicing display module according to claim 1, characterized in that, The first inclined plane is set parallel to the second inclined plane.

4. The splicing display module according to claim 1, characterized in that, The first inclined plane has the same area as the second inclined plane.

5. The splicing display module according to claim 1, characterized in that, The first substrate further includes a third surface disposed opposite to the first surface, and the first inclined surface connects the first surface and the third surface; The second substrate further includes a fourth surface disposed opposite to the second surface, and the second inclined surface connects the second surface and the fourth surface.

6. The splicing display module according to claim 1, characterized in that, The first surface and the second surface are matched in terms of concavity and convexity.

7. The splicing display module according to claim 1, characterized in that, The first substrate further includes a third surface disposed opposite to the first surface, and the first curved surface connects the first surface and the third surface; The second substrate also includes a fourth surface disposed opposite to the second surface, and the second curved surface connects the second surface and the fourth surface.

8. The splicing display module according to claim 1, characterized in that, The first substrate also has a third surface opposite to the first surface and a third side surface opposite to the first side surface. The third surface has a third pad and a third driver chip electrically connected to the third pad. The first display panel also includes a third side trace, which is electrically connected to the third pad and extends along the third surface to cover at least part of the third side surface. The second substrate also has a fourth surface opposite to the second surface and a fourth side surface opposite to the second side surface. The fourth surface has a fourth pad, and the second surface also has a fifth pad and a second driver chip electrically connected to the fifth pad. The second display panel also includes a fourth side trace disposed on the fourth side surface. The two ends of the fourth side trace are electrically connected to the fourth pad and the fifth pad, respectively.

9. The splicing display module according to claim 8, characterized in that, The second display panel is the outermost display panel in the splicing display module, and the first display panel is the innermost display panel in the splicing display module.

10. The splicing display module according to claim 8, characterized in that, The fourth side is perpendicular to the second surface.

11. The splicing display module according to claim 1, characterized in that, The second substrate also has a fourth surface opposite to the second surface and a fourth side surface opposite to the second side surface. A fourth pad is provided on the fourth surface. The second display panel further includes a fourth side trace, which is electrically connected to the fourth pad and extends along the fourth surface to cover at least part of the fourth side surface.

12. The splicing display module according to claim 11, characterized in that, The first display panel is the outermost display panel in the splicing display module, and the second display panel is the innermost display panel in the splicing display module.

13. The splicing display module according to claim 1, characterized in that, The first substrate has a third surface opposite to the first surface and a third side surface opposite to the first side surface. The third surface has a third pad and a third driver chip electrically connected to the third pad. The first display panel also includes a third side trace, which is electrically connected to the third pad and extends along the third surface to cover at least part of the third side surface. Furthermore, the second substrate is provided with a fourth surface opposite to the second surface and a fourth side surface opposite to the second side surface. A fourth pad is provided on the fourth surface. The second display panel further includes a fourth side trace, which is electrically connected to the fourth pad and extends along the fourth surface to cover at least a portion of the fourth side surface.

14. The splicing display module according to claim 13, characterized in that, The first display panel has the same structure as the second display panel.

15. The splicing display module according to claim 13, characterized in that, Both the first display panel and the second display panel are the inner display panels in the splicing display module.

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