Splicing display module and display device

Abstract

The invention provides a tiled display module and a display device.The tiled display module comprises a first display module and a second display module which are arranged in a tiled mode, the first display module comprises a first substrate and a second substrate which are oppositely arranged, and a main body part of the first substrate and the second substrate are oppositely arranged; the extension part of the first substrate is arranged beyond the edge of the second substrate, the second display module is at least arranged on the extension part and is in electric driving connection with the driving wire of the extension part, so that the extension part is used for driving the second display module, and a picture displayed by the second display module can shield frames of the first substrate and the second substrate; therefore, gaps of the spliced display module can be reduced or even eliminated, and the full-screen display effect of the spliced display module is achieved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a spliced ​​display module and a display device. Background Art

[0002] With the rapid development of display technology, people's requirements for display devices are constantly increasing. In order to achieve a larger display area, the application of splicing multiple display panels together is becoming more and more widespread.

[0003] Since each display panel as a splicing unit has a frame of a certain width, the spliced ​​display module formed by splicing has a splicing seam that causes a serious sense of segmentation on the overall picture, seriously affecting the overall effect of the spliced ​​display picture.

[0004] Therefore, it is necessary to provide a spliced ​​display module and a display device to improve this defect. Summary of the invention

[0005] The embodiments of the present application provide a spliced ​​display module and a display device, which can solve the problem of splicing seams of spliced ​​display modules.

[0006] In order to achieve the above-mentioned object, according to a first aspect of the present application, a spliced ​​display module is provided, comprising a first display module and a second display module which are spliced ​​together.

[0007] The first display module comprises a first substrate and a second substrate arranged opposite to each other, the first substrate comprises a main body and an extension portion, the main body is arranged opposite to the second substrate, the extension portion is arranged beyond the edge of the second substrate, and the extension portion is provided with a driving trace;

[0008] The second display module is at least disposed on the extending portion and connected to the driving wiring.

[0009] Optionally, the second display module is partially disposed on the second substrate.

[0010] Optionally, the second display module includes a conductive substrate and a plurality of light emitting elements, wherein the light emitting elements are arranged on a surface of the conductive substrate away from the first substrate, and the conductive substrate includes:

[0011] A first sub-section is disposed on the second substrate;

[0012] a second sub-portion, disposed on the extension portion;

[0013] The surface of the first sub-part away from the first substrate is flush with the surface of the second sub-part away from the first substrate, and the surface of the second sub-part close to the first substrate protrudes from the surface of the first sub-part close to the first substrate.

[0014] Optionally, a thickness of the first sub-portion is smaller than a thickness of the second sub-portion.

[0015] Optionally, the first subsection has at least one first conductive layer, the second subsection has at least two second conductive layers, the number of the first conductive layers is less than the number of the second conductive layers, and each first conductive layer is arranged on the same layer as a corresponding second conductive layer.

[0016] Optionally, a terminal is exposed on a surface of the second sub-portion close to the extension portion, and the terminal is connected to the driving trace.

[0017] Optionally, the spliced ​​display module further includes a conductive adhesive layer, and the conductive adhesive layer is arranged between the extending portion and the second sub-portion.

[0018] Optionally, a plurality of first transistors are disposed in the main body portion, a plurality of second transistors are disposed in the extension portion, and the first transistors and the second transistors are disposed in the same layer.

[0019] Optionally, the second display module is disposed beyond an edge of the extending portion.

[0020] Optionally, the second substrate includes a display area and a non-display area, the non-display area is arranged around the display area, the second display module covers the non-display area of ​​the second substrate close to the extension portion, and the second display module partially covers the display area of ​​the second substrate close to the extension portion.

[0021] Optionally, the first display module further includes an upper polarizer, which is disposed on a surface of the second substrate away from the first substrate, and the second display module covers an end of the upper polarizer close to the extension portion.

[0022] Optionally, an end of the upper polarizer close to the adjacent extension portion is arranged between the second substrate and the second display module.

[0023] Optionally, the spliced ​​display module further includes:

[0024] a first driving circuit board, electrically connected to the main body, the first driving circuit board being used to drive the main body; and

[0025] The second driving circuit board is electrically connected to the extending portion, and the second driving circuit board is used to drive the second display module.

[0026] According to a second aspect of the present application, a display device is provided, comprising the spliced ​​display module as described above.

[0027] In the spliced ​​display module of the embodiment of the present application, by disposing the second display module at least on the extension part, the extension part is provided with a driving line, and the second display module is connected to the driving line so that the second display module can be driven by the extension part. The picture displayed by the second display module can block the frame of the first substrate and the second substrate, thereby reducing or even eliminating the gap of the spliced ​​display module, and achieving the full-screen display effect of the spliced ​​display module.

[0028] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0030] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0031] Figure 1 A schematic diagram of the structure of a spliced ​​display module provided in an embodiment of the present application;

[0032] Figure 2 A top view of a first substrate in a spliced ​​display module provided in an embodiment of the present application;

[0033] Figure 3 A top view of a second display module in a spliced ​​display module provided in an embodiment of the present application;

[0034] Figure 4 A bottom view of a second display module in a spliced ​​display module provided in an embodiment of the present application;

[0035] Figure 5 A cross-sectional view of a second display module in a spliced ​​display module provided in an embodiment of the present application along the AA' direction;

[0036] Figure 6 A schematic diagram of the structure of a display device provided in an embodiment of the present application.

[0037] Description of reference numerals:

[0038] 1. first display module; 11. second substrate; 12. first substrate; 121. main body; 122. extension; 1221. drive wiring; 13. upper polarizer; 14. lower polarizer;

[0039] 2. second display module; 21. conductive substrate; 211. first sub-unit; 2111. first conductive layer; 2112. first base material layer; 212. second sub-unit; 2121. second conductive layer; 2122. second base material layer; 22. light emitting element; 23. transparent sealing layer; 24. terminal;

[0040] 3. Conductive adhesive layer;

[0041] 4. First driving circuit board; 41. First flip chip film; 42. First circuit board;

[0042] 5. Second driving circuit board; 51. Second flip chip film; 52. Second circuit board;

[0043] 100. Spliced ​​display module; 200. Housing; 1000. Display device. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0045] An embodiment of the present application provides a spliced ​​display module, which includes a first display module and a second display module that are spliced ​​together, the first display module includes a first substrate and a second substrate that are relatively arranged, the first substrate includes a main body and an extension portion, the main body is arranged opposite to the second substrate, the extension portion is arranged beyond the edge of the second substrate, the extension portion is provided with a driving line, the second display module is at least arranged on the extension portion, and is connected to the driving line.

[0046] In an embodiment of the present application, by disposing the second display module at least on an extension portion of the first substrate and connecting the second display module to a driving line, so that the extension portion is used to drive the second display module to display an image, the gap between the spliced ​​display modules can be reduced or even eliminated, thereby achieving a full-screen display effect of the spliced ​​display modules.

[0047] See also Figure 1 , Figure 1The schematic diagram of the structure of the spliced ​​display module provided in the embodiment of the present application, the spliced ​​display module 100 includes a first display module and a second display module which are spliced ​​together, the first display module 1 is a liquid crystal display panel, the first display module 1 includes a second substrate 11 and a first substrate 12, and the first substrate 12 is arranged opposite to the second substrate 11. The first substrate 12 includes a main body 121, and the main body 121 is arranged opposite to the second substrate 11. In the thickness direction of the first display module, the main body 121 overlaps with the second substrate 11. The first display module 1 also includes a liquid crystal layer (not shown in the figure), and the liquid crystal layer is arranged between the second substrate 11 and the first substrate 12.

[0048] See also Figure 1 The first substrate 12 further includes an extension portion 122 . The extension portion 122 is disposed beyond an edge of the second substrate 11 . The extension portion 122 is located at a splicing end of the first display module 1 .

[0049] In some embodiments, see Figure 1 The extension portion 122 is connected to one end of the main body 121 . The main body 121 and the extension portion 122 belong to different parts of the first substrate 12 . The main body 121 and the extension portion 122 are an integrated structure.

[0050] See also Figure 1 The extension portion 122 is arranged beyond the edge of the second substrate 11. In the thickness direction of the first display module, the extension portion 122 is separated from the second substrate 11, that is, the extension portion 122 does not overlap with the second substrate 11. It can also be considered that the size of the first substrate 12 is larger than the size of the second substrate 11.

[0051] See also Figure 1 The spliced ​​display module 100 also includes a second display module 2, which can display image images. The second display module 2 is at least arranged on the extension portion 122, and the extension portion 122 is provided with a driving line, and the second display module 2 is connected to the driving line.

[0052] It should be noted that the second display module 2 is at least arranged on the extension portion 122, which means that the second display module 2 is located above the extension portion 122, that is, the side of the extension portion 122 close to the second substrate 11. The second display module 2 and the surface of the extension portion 122 close to the second substrate 11 can be in direct contact or separated by other film layers.

[0053] See also Figure 1 and Figure 2 , Figure 2A top view of the first display module in the spliced ​​display module provided in an embodiment of the present application, wherein the extension portion 122 is provided with a driving wiring 1221, and the second display module 2 is electrically connected to the driving wiring 1221. The second display module 2 can display a picture driven by the electrical signal provided by the extension portion 122, and the picture displayed by the second display module 2 can be seamlessly connected with the picture displayed by the first display module 1, thereby eliminating the gap of the spliced ​​display module, thereby achieving a full-screen display effect.

[0054] In some embodiments, see Figure 1 and Figure 2 The second display module 2 has a terminal 24 exposed on a surface close to the first substrate 12 , the extension portion 122 has an auxiliary driving circuit built in, the auxiliary driving circuit is connected to the driving wire, and the terminal 24 is electrically connected to the driving wire 1221 .

[0055] In some embodiments, the first substrate 12 includes a base substrate and a driving circuit layer (not shown in the figure) disposed on the base substrate, and the driving circuit layer is disposed on both the main body 121 and the extension 122. Specifically, the driving circuit layer is formed by stacking film layers such as a metal layer, a semiconductor layer, and an insulating layer, and a pixel driving circuit for charging the pixel electrode to drive the deflection of the liquid crystal molecules is disposed in the driving circuit layer.

[0056] Specifically, see Figure 1 and Figure 2 The driving circuit layer of the main body 121 has a built-in pixel driving circuit (not shown in the figure), which can charge the pixel electrode located in the main body to drive the liquid crystal molecules in the corresponding main body to deflect. The driving circuit of the extension 122 has a built-in auxiliary driving circuit, and the extension 122 is not provided with a pixel electrode. The driving line 1221 is electrically connected to the terminal 24 of the second display module 2, and the driving line 1221 is used to drive the light-emitting element in the second display module 2 to emit light.

[0057] In some embodiments, see Figure 1 The second display module 2 is partially arranged on the second substrate 11, and the picture displayed by the second display module 2 can be seamlessly connected with the picture displayed by the first display module 1, and the picture displayed by the second display module 2 can cover the frame of the first substrate 12 and the second substrate 11, thereby reducing or even eliminating the gap of the spliced ​​display module, and realizing the full-screen display effect of the spliced ​​display module.

[0058] In some embodiments, see Figures 1 to 5 , Figure 3 A top view of a second display module in a spliced ​​display module provided in an embodiment of the present application, Figure 4 A bottom view of a second display module in a spliced ​​display module provided in an embodiment of the present application, Figure 5A cross-sectional view of the second display module in the spliced ​​display module provided in an embodiment of the present application along the A-A' direction, wherein the second display module 2 includes a conductive substrate 21 and a plurality of light-emitting elements 22, wherein the light-emitting elements 22 are disposed on a surface of the conductive substrate 21 away from the first substrate 12, and the conductive substrate 21 includes a first sub-portion 211 and a second sub-portion 212, wherein the first sub-portion 211 is disposed on the second substrate 11, and the second sub-portion 212 is disposed on an extension portion 122 of the first substrate 12, wherein the first sub-portion 211 and the second sub-portion 212 belong to different portions of the conductive substrate 21, and the first sub-portion 211 and the second sub-portion 212 are an integral structure.

[0059] In some embodiments, see Figures 1 to 5 A plurality of light-emitting elements 22 are arranged on the surfaces of the first sub-section 211 and the second sub-section 212 away from the first substrate 12. The surface of the first sub-section 211 away from the first substrate 12 is flush with the surface of the second sub-section 212 away from the first substrate 12, and the surface of the second sub-section 212 close to the first substrate 12 protrudes from the surface of the first sub-section 211 close to the first substrate 12. In this way, the light-emitting elements 22 on the first sub-section 211 and the second sub-section 212 are at the same height, so that the display effects of the first sub-section 211 and the second sub-section 212 are consistent.

[0060] In some embodiments, see Figure 5 The thickness of the first sub-section 211 is less than that of the second sub-section 212. By increasing the thickness of the second sub-section 212, the height difference between the upper surface of the second substrate 11 and the upper surface of the extension portion 122 is filled, so that the light-emitting elements 22 on the first sub-section 211 and the second sub-section 212 are at the same height, thereby ensuring that the display effects of the first sub-section 211 and the second sub-section 212 are consistent.

[0061] In some embodiments, the first sub-section 211 of the conductive substrate 21 includes at least one first conductive layer 2111 and a first base material layer 2112 (not shown in the figure) arranged on the upper and lower sides of the first conductive layer 2111, and the second sub-section 212 includes at least two second conductive layers 2121 and a second base material layer 2122 arranged on the upper and lower sides of the second conductive layer 2121. The number of first conductive layers 2111 is less than the number of second conductive layers 2121, so that the thickness of the first sub-section 211 is less than the thickness of the second sub-section 212.

[0062] In some embodiments, each first conductive layer 2111 in the first sub-portion 211 is disposed on the same layer as a corresponding second conductive layer 2121 in the second sub-portion 212 , and each first substrate layer 2112 is disposed on the same layer as a corresponding second substrate layer 2122 .

[0063] In some embodiments, the light emitting element 22 is a light emitting diode, which may specifically include a red light emitting diode, a green light emitting diode and a blue light emitting diode. The red light emitting diode, the green light emitting diode and the blue light emitting diode may be arranged in a pixel arrangement.

[0064] In some other embodiments, the type of the light emitting element 22 is not limited to the light emitting diode in the above embodiments, and may also be a light emitting device such as a mini light emitting diode, a micro light emitting diode chip or an organic light emitting diode.

[0065] In some embodiments, the second display module 2 further includes a transparent sealing layer 23 , which is disposed on the conductive substrate 21 and covers the light emitting element 22 .

[0066] In some embodiments, see Figures 1 to 5 The terminal 24 is exposed on the surface of the second sub-portion 212 close to the first substrate 12 .

[0067] In some embodiments, see Figure 1 The spliced ​​display module 100 also includes a conductive adhesive layer 3, which is arranged between the extension portion 122 and the second sub-portion 212, and the terminal 24 exposed on the surface of the second sub-portion 212 close to the extension portion 122 is electrically connected to the driving trace 1221 exposed on the surface of the extension portion 122 through the conductive adhesive layer 3.

[0068] In some embodiments, the adhesive material used for the conductive adhesive layer 3 is anisotropic conductive adhesive, which can provide a conductive function in a specific direction. The anisotropic conductive adhesive mainly includes a substrate and conductive particles. The substrate includes polyimide, acrylic and epoxy resin.

[0069] In some embodiments, multiple first transistors are disposed in the main body 121, and multiple second transistors are disposed in the extension portion 122. The first transistors and the second transistors are disposed in the same layer, and the first transistors and the second transistors have the same structure. The first transistors and the second transistors can be prepared by sharing the same process.

[0070] In some embodiments, see Figure 1 , one end of the second display module 2 close to the extension portion 122 exceeds one end of the edge of the extension portion 122. By extending the second display module 2, the end of the second display module 2 close to the extension portion 122 exceeds the edge of the extension portion 122, so that the second display modules 2 of two adjacent spliced ​​display modules 100 are directly spliced, which can further reduce or even eliminate the splicing seam between the two adjacent spliced ​​display modules 100.

[0071] In some embodiments, the length of the second display module 2 near the extension portion 122 is 1 mm beyond the extension portion 122. In practical applications, the length of the second display module 2 near the extension portion 122 is not limited to 1 mm in the above embodiment, but may also be 0.8 mm, 0.9 mm, 1.1 mm or 1.2 mm, etc.

[0072] In some embodiments, see Figure 6 , the extension portion 122 is close to one end of the extension portion 122, and is spaced apart from the first substrate 12 of another adjacent spliced ​​display module 100. Since the base substrate of the first substrate 12 is made of glass, if the first substrates 12 of two adjacent spliced ​​display modules 100 are directly spliced, it is easy to cause bumps to the base substrates of the first substrate 12, resulting in damage to the first substrate 12. By spacing the ends of two adjacent first substrates 12 close to each other, the risk of damage to the first substrate 12 due to bumps during splicing, assembly or transportation can be reduced. In addition, since the spliced ​​display module 100 also includes a backlight module (not shown in the figure), by spacing the ends of two adjacent first substrates 12 close to each other, a certain buffer space can be reserved for the structural design of the backlight module, thereby reducing the difficulty of designing and assembling the spliced ​​display module.

[0073] In some embodiments, see Figure 1 The second substrate 11 includes a display area AA and a non-display area NA, the non-display area NA is arranged around the display area AA, the second display module 2 covers the non-display area NA on the side of the second substrate 11 close to the extension portion 122, and the second display module 2 partially covers the display area AA of the second substrate 11 close to the extension portion 122.

[0074] In this embodiment, the second display module 2 not only covers the non-display area NA of the second substrate 11 on the side close to the extension portion 122, but also partially covers the display area AA of the second substrate 11 on the side close to the extension portion 122, so that the picture displayed in the display area AA of the second substrate 11 is more coherent with the picture displayed by the second display module 2, which can further reduce or even eliminate the splicing seams of the spliced ​​display modules, thereby achieving a seamless full-screen display effect.

[0075] In some embodiments, see Figure 1 The first display module 1 further includes an upper polarizer 13 , which is disposed on a surface of the second substrate 11 away from the first substrate 12 , and the second display module 2 covers an end of the upper polarizer 13 close to the extension portion 122 .

[0076] In some embodiments, see Figure 1 One end of the upper polarizer 13 close to the extension portion 122 is disposed between the second substrate 11 and the second display module 2 .

[0077] In some embodiments, see Figure 1 The first display module 1 further includes a lower polarizer 14 , which is disposed on a surface of the first substrate 12 away from the second substrate 11 .

[0078] In some embodiments, see Figure 2 The spliced ​​display module 100 further includes a first driving circuit board 4 and a second driving circuit board 5. The first driving circuit board 4 is electrically connected to the main body 121 and is used to drive the main body 121. The second driving circuit board 5 is electrically connected to the extension 122 and is used to drive the second display module 2.

[0079] The first driving circuit board 4 includes a plurality of first COFs 41 and a first circuit board 42, and the first circuit board 42 is electrically connected to the main body 121 through the first COFs 41. The first COF 41 is composed of a flexible circuit board and a first driving chip bound and connected to the flexible circuit board. The second driving circuit board 5 includes a second COF 51 and a second circuit board 52, and the second circuit board 52 is electrically connected to the extension 122 through the second COF 51. The second COF 51 is composed of a flexible circuit board and a second driving chip bound and connected to the flexible circuit board.

[0080] In some embodiments, see Figure 2 , the spliced ​​display module 100 includes two first drive circuit boards 4 and one second drive circuit board 5. In practical applications, the number of the first drive circuit boards 4 and the second drive circuit boards 5 in the spliced ​​display module 100 can be set according to actual needs, and is not limited here.

[0081] According to the spliced ​​display module provided in the above embodiment of the present application, the embodiment of the present application also provides a display device, see Figure 6 , Figure 6 The structural schematic diagram of the display device provided in the embodiment of the present application, the display device 1000 includes at least two spliced ​​display modules 100 and a housing 200, and at least two spliced ​​display modules 100 are spliced ​​and arranged on the housing 200. The spliced ​​display module 100 can be the spliced ​​display module provided in any of the above embodiments. The display device provided in the embodiment of the present application can achieve the same technical effect as the spliced ​​display module provided in any of the above embodiments, which will not be described in detail here.

[0082] Beneficial effects of the embodiments of the present application: The embodiments of the present application provide a spliced ​​display module and a display device, wherein the spliced ​​display module includes a first display module and a second display module that are spliced ​​together, the first display module includes a first substrate and a second substrate that are relatively arranged, the main body of the first substrate is relatively arranged to the second substrate, the extension portion of the first substrate is arranged beyond the edge of the second substrate, the second display module is at least arranged on the extension portion, and is connected to the driving wiring of the extension portion to utilize the extension portion to drive the second display module, the picture displayed by the second display module can block the frame of the first substrate and the second substrate, thereby reducing or even eliminating the gap of the spliced ​​display module, and achieving the full-screen display effect of the spliced ​​display module.

[0083] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0084] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0085] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0086] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A splicing display module, characterized in that: The invention comprises a first display module and a second display module which are spliced ​​together, wherein The first display module comprises a first substrate and a second substrate arranged opposite to each other, the first substrate comprises a main body and an extension portion, the main body is arranged opposite to the second substrate, the extension portion is arranged beyond the edge of the second substrate, and the extension portion is provided with a driving trace; The second display module is at least disposed on the extending portion and connected to the driving wiring.

2. The splicing display module according to claim 1, characterized in that: The second display module is partially disposed on the second substrate.

3. The splicing display module according to claim 2, characterized in that: The second display module includes a conductive substrate and a plurality of light-emitting elements, wherein the light-emitting elements are arranged on a surface of the conductive substrate away from the first substrate, and the conductive substrate includes: A first sub-section is disposed on the second substrate; a second sub-portion, disposed on the extension portion; The surface of the first sub-part away from the first substrate is flush with the surface of the second sub-part away from the first substrate, and the surface of the second sub-part close to the first substrate protrudes from the surface of the first sub-part close to the first substrate.

4. The splicing display module according to claim 3, characterized in that: The thickness of the first sub-portion is smaller than the thickness of the second sub-portion.

5. The splicing display module according to claim 3, characterized in that: The first sub-section has at least one first conductive layer, the second sub-section has at least two second conductive layers, the number of the first conductive layers is less than the number of the second conductive layers, and each first conductive layer is disposed on the same layer as a corresponding second conductive layer.

6. The splicing display module according to claim 3, characterized in that: A terminal is exposed on a surface of the second sub-portion close to the extension portion, and the terminal is connected to the driving trace.

7. The splicing display module according to claim 3, characterized in that: The spliced ​​display module further includes a conductive adhesive layer, and the conductive adhesive layer is arranged between the extending portion and the second sub-portion.

8. The splicing display module according to claim 1, characterized in that: A plurality of first transistors are arranged in the main body, a plurality of second transistors are arranged in the extension, and the first transistors and the second transistors are arranged in the same layer.

9. The splicing display module according to claim 1, characterized in that: The second display module is disposed beyond the edge of the extending portion.

10. The splicing display module according to claim 1, characterized in that: The second substrate includes a display area and a non-display area, the non-display area is arranged around the display area, the second display module covers the non-display area of ​​the second substrate close to the extension part, and the second display module partially covers the display area of ​​the second substrate close to the extension part.

11. The splicing display module according to claim 10, characterized in that: The first display module further includes an upper polarizer, which is disposed on a surface of the second substrate away from the first substrate, and the second display module covers an end of the upper polarizer close to the extension portion.

12. The splicing display module according to claim 11, characterized in that: One end of the upper polarizer close to the extending portion is disposed between the second substrate and the second display module.

13. The splicing display module according to claim 1, characterized in that: The splicing display module also includes: a first driving circuit board, electrically connected to the main body, the first driving circuit board being used to drive the main body; and The second driving circuit board is electrically connected to the extending portion, and the second driving circuit board is used to drive the second display module.

14. A display device, characterized in that: It comprises a spliced ​​display module as described in any one of claims 1 to 13.

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