Backboard assembly, backlight module, display device and splicing display equipment

Abstract

The utility model discloses a back plate assembly, a backlight module, a display device and tiled display equipment. The backboard assembly comprises a backboard body, and the backboard body comprises backboard side edges and backboard corners formed by the adjacent backboard side edges, wherein the backboard side edges and the backboard corners are sequentially connected end to end. The positioning splicing pieces are arranged on the side edges of the back plate and / or the corners of the back plate, each positioning splicing piece comprises a fixing part and a child-mother plug-in structure arranged on the fixing part, the fixing parts are connected with the side edges of the back plate and / or the corners of the back plate, and the child-mother plug-in structures are arranged on the fixing parts. The child-mother plug-in structures are connected with the child-mother plug-in structures at the corresponding positions in the adjacent backboard assemblies in a plug-in mode. According to the back plate assembly, the backlight module and the display device comprising the back plate assembly can be leveled through the child-mother plug-in structure, high-low dislocation of splicing seams among the adjacent back plate assembly, the backlight module and the display device is avoided, and the flatness and the display effect of the spliced display device are improved.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of display devices, and in particular relates to a back panel assembly, a backlight module, a display device, and a spliced ​​display device. Background Art

[0002] In the field of display device technology, in order to achieve a larger display area, two or more display devices are usually spliced ​​to form a spliced ​​display device, and the display device also uses a larger display area. For example, the display screen size of the display device can be 46 to 65 inches, and the long side length of the display device is more than 1000 mm. In the display device, the back panel and the middle frame are its main shape-preserving structures. The material used for the back panel is generally galvanized steel or aluminum, and the material used for the middle frame is generally plastic or aluminum. These galvanized steel, aluminum and plastic are affected by their production capacity and the performance of the material itself. The four corners of the display device are prone to warping, which makes it more difficult to splice the display device, and it is difficult to align adjacent display devices, affecting the splicing effect and display effect.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0004] The present disclosure aims to at least to some extent solve the technical problems of display devices being difficult to splice and align. To this end, the present disclosure provides a back panel assembly, a backlight module, a display device and a spliced ​​display device.

[0005] An embodiment of the present disclosure provides a backplane assembly, the backplane assembly comprising:

[0006] A back panel body, the back panel body comprising back panel side edges connected end to end in sequence and a back panel corner formed by adjacent back panel side edges;

[0007] A positioning splicing piece, the positioning splicing piece includes a fixing portion and a mother-and-child plug-in structure arranged on the fixing portion, the fixing portion is connected to the side edge of the back panel and / or the corner of the back panel, and the mother-and-child plug-in structure is plugged into the mother-and-child plug-in structure at a corresponding position in an adjacent back panel assembly.

[0008] In some embodiments, the parent-child plug-in structure includes a parent-child plug and / or a parent-child slot; wherein,

[0009] The mother-and-child plugs extend toward the outer side of the corresponding backplane side and are plugged into the mother-and-child slots at corresponding positions in the adjacent backplane assembly;

[0010] The mother-and-child slots extend toward the inner side of the corresponding backplane side and are plugged into the mother-and-child plugs at corresponding positions in the adjacent backplane assembly.

[0011] In some embodiments, the fixing portion is stacked on one side of the backplane body, the mother-and-child plug is a plate-like structure, and the plug surface of the mother-and-child plug used to contact the mother-and-child slot is parallel to the backplane body; the slot surface of the mother-and-child slot used to contact the mother-and-child plug is parallel to the backplane body.

[0012] In some embodiments, the insertion length of the female-sub plug inserted into the female-sub slot is 2 mm to 6 mm.

[0013] In some embodiments, an insertion end of the mother-and-child plug inserted into the mother-and-child slot is provided with an oblique angle.

[0014] In some embodiments, the bevel has a bevel length of 0.8 mm to 1.6 mm.

[0015] In some embodiments, the female and male plugs are magnetically connected to the slots.

[0016] In some embodiments, the fixing portion is provided with at least two fixing holes, and the fixing portion is connected to the back panel body through the fixing holes.

[0017] In some embodiments, the fixing portion includes a first fixing portion and a second fixing portion that are perpendicular to each other, and the first fixing portion and the second fixing portion are both provided with the parent-child plug-in structure; the fixing portion is arranged at the corner of the back panel, and the first fixing portion and the second fixing portion are respectively arranged flush with the side edges of the back panel adjacent to the corner of the back panel.

[0018] In some embodiments, in the same back panel assembly, the positioning splicing pieces provided on each back panel corner are the same or different.

[0019] In some embodiments, at least two of the mother-and-child plugs and / or the mother-and-child slots are provided on the fixing portion.

[0020] In some embodiments, the fixing portion includes a straight fixing portion, and the opposite sides of the straight fixing portion are respectively provided with the mother-and-child plug and the mother-and-child slot; the straight fixing portion is arranged on the side of the back panel, and the straight fixing portion is arranged flush with the side of the back panel.

[0021] In some embodiments, the straight fixing portion is in the shape of a handle.

[0022] In some embodiments, the female and male plugs are movably disposed on the straight fixing portion.

[0023] In some embodiments, an insertion end of the mother-and-child plug inserted into the mother-and-child slot is provided with an elastic snap portion, a hook cavity for accommodating the elastic hook portion is provided in the mother-and-child slot, and an anti-disengagement block is provided at the opening of the mother-and-child slot.

[0024] In some embodiments, the mother-and-child slot is a slide groove arranged in the fixed part, and a limiting part is provided in the mother-and-child slot; the mother-and-child plug can be slidably arranged in the slide groove, and the mother-and-child plug is provided with a limiting protrusion.

[0025] The disclosed embodiment also proposes a backlight module, which includes a light source assembly, a middle frame assembly and the above-mentioned back panel assembly, wherein the light source assembly is arranged on the second side surface of the back panel body, and the middle frame assembly is arranged around the four sides of the back panel body.

[0026] The disclosed embodiment further provides a display device, which includes a display panel and the above-mentioned backlight module, wherein the display panel is supported in the middle frame.

[0027] The embodiment of the present disclosure further provides a spliced ​​display device, which is formed by splicing a plurality of the above-mentioned display devices.

[0028] The embodiments of the present disclosure have at least the following beneficial effects:

[0029] The back panel assembly proposed in the embodiment of the present disclosure has a positioning splicing piece fixed to the side and / or corner of the back panel by a fixing part, and the positioning splicing piece is added to the back panel body to form an integral structure with the back panel body. The adjacent back panel assemblies can be directly plugged into each other through the parent-child plug-in structure, and the adjacent back panel assemblies can be limited and leveled through the parent-child plug-in structure, and then the backlight module and the display device including the back panel assembly can be leveled through the parent-child plug-in structure, which reduces the deformation caused by the warping of the back panel body and / or the corner of the middle frame to a certain extent, enables the adjacent back panel assemblies and the backlight module and the display device including the back panel assembly to be aligned, avoids the occurrence of height misalignment in the splicing seams between adjacent back panel assemblies, backlight modules and display devices, and improves the display device after splicing. The flatness and display effect of the assembly are improved; at the same time, when the back panel assembly is spliced, the adjacent back panel assemblies, backlight modules and display devices are connected to each other, so that the corresponding parent-child plug-in structures can be plugged in to complete the operation. The operation is simple and easy, and there is no need to manually adjust the flatness, which reduces the splicing adjustment time. The standardized operation method can meet the requirements of splicing flatness, which reduces the difficulty of splicing to a certain extent and improves the splicing assembly efficiency. In addition, the back panel assembly uses lightweight positioning splicing parts for splicing and leveling. Considering the splicing and leveling solution from the perspective of the product's own structure, there is no need to set up a large-size splicing frame with a large volume and weight. The positioning splicing parts have a simple, light and easy structure and are easy to process, which can not only reduce the manufacturing cost of the positioning splicing parts, but also reduce the difficulty and labor cost of transportation and handling. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In addition, in the drawings described below, the display decoration only shows the external outline, and does not show the internal backlight module, display panel, and other structures that are not directly connected to the positioning splicing piece.

[0031] Figure 1 A rear view of a display device in the related art is shown;

[0032] Figure 2 A top view of a display device in the related art is shown;

[0033] Figure 3 Shows Figure 2 A diagram showing the effect of a joint seam when the display devices are joined;

[0034] Figure 4 A schematic structural diagram of a backplane assembly in an embodiment of the present disclosure is shown;

[0035] Figure 5 Shows Figure 4 A schematic structural diagram of a backplane body of a backplane assembly;

[0036] Figure 6 Shows Figure 4 A schematic structural diagram of the positioning splicing parts of the back panel assembly;

[0037] Figure 7 Shows Figure 4 A schematic diagram of the three-dimensional structure of the positioning splicing piece at the first corner of the back panel assembly;

[0038] Figure 8 Shows Figure 4 A schematic diagram of the three-dimensional structure of the positioning splicing piece at the fourth corner of the back panel assembly;

[0039] Fig. 9 A rear view of a spliced ​​display device in an embodiment of the present disclosure is shown;

[0040] Fig.10 Shows Fig. 9 A top view of a spliced ​​display device;

[0041] Fig.11 A rear view of a spliced ​​display device in another embodiment of the present disclosure is shown;

[0042] Fig.12 Shows Fig.11 Magnified view at A in the middle;

[0043] Fig.13 Shows Fig.12 Schematic diagram of the structure of the neutron female plug;

[0044] Fig.14 A rear view of a spliced ​​display device in another embodiment of the present disclosure is shown;

[0045] Fig.15 A rear view of a spliced ​​display device in another embodiment of the present disclosure is shown;

[0046] Fig.16 A rear view of a spliced ​​display device in another embodiment of the present disclosure is shown;

[0047] Fig.17 A rear view of a spliced ​​display device in another embodiment of the present disclosure is shown;

[0048] Fig.18 Shows Fig.17 A schematic diagram of the structure of the male and female plugs of the positioning splicing piece located on the side of the back panel in the middle splicing display device when they are retracted;

[0049] Fig.19 Shows Fig.17 A schematic diagram of the structure of a splicing display device in which the male and female plugs of the positioning splicing piece located on the side of the back panel are extended;

[0050] Fig. 20 Shows Fig.17 A schematic diagram of the structure of the mother-and-child plug-in structure of the positioning splicing piece located on the side of the back panel in the splicing display device when plugged in;

[0051] Fig.21 Shows Fig.17 A schematic diagram of the three-dimensional structure of the positioning splicing piece located on the side of the back panel in the splicing display device;

[0052] Fig. 22 Shows Fig.17 A schematic diagram of the three-dimensional structure of the positioning splicing piece located on the side of the back panel in the splicing display device from another angle;

[0053] Fig.23 Shows Fig. 20 A BB-section view of a positioning splicing piece located on the side of a back panel in a middle splicing display device;

[0054] Fig.24 A rear view of a spliced ​​display device in another embodiment of the present disclosure is shown;

[0055] Fig.25 Shows Fig.24 A schematic diagram of the structure of the male and female plugs of the positioning splicing piece located on the side of the back panel in the middle splicing display device when they are retracted;

[0056] Fig.26 Shows Fig.24 A schematic diagram of the structure of a splicing display device in which the male and female plugs of the positioning splicing piece located on the side of the back panel are extended;

[0057] Fig. 27 Shows Fig.24 A structural schematic diagram of the mother-and-child plug-in structure of the positioning splicing piece located on the side of the back panel in the splicing display device.

[0058] Reference numerals:

[0059] 100', display device; 110', first display device; 120', second display device; 200', joint seam;

[0060] 100, display device; 110, first display device; 120, second display device; 130, third display device; 140, fourth display device; 1000, back panel body; 1110, first side edge; 1120, second side edge; 1130, third side edge; 1140, fourth side edge; 1210, first corner portion; 1220, second corner portion; 1230, third corner portion; 1240, fourth corner portion; 2000, positioning splicing piece; 2100, fixing portion; 2 110, first fixing portion; 2120, second fixing portion; 2130, straight fixing portion; 2140, fixing hole; 2150, fixing connector; 2200, mother-and-child plug-in structure; 2210, mother-and-child plug; 2211, bevel; 2212, elastic snap portion; 2213, limiting protrusion; 2220, mother-and-child slot; 2221, anti-slip block; F1, outer direction of the back panel side; F2, inner direction of the back panel side; L1, plug-in length; L2, bevel length. DETAILED DESCRIPTION

[0061] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0062] In addition, the present disclosure may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present disclosure provides various specific examples of processes and materials, but those of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.

[0063] For the sake of convenience and brevity, this application takes the normal working position of the display device 100 as a reference. Figure 1 The side of the display device 100 where the display panel is located is called the front; the rear refers to the side of the display device 100 opposite to the display panel, that is, the side where the back plate is located; the left and right directions are lateral directions perpendicular to the front and back directions. The top and bottom are directions perpendicular to the front and back directions and the left and right directions.

[0064] The present disclosure is described below with reference to specific embodiments and in conjunction with the accompanying drawings:

[0065] In the field of display device technology, Figures 1 to 3As shown, in order to achieve a larger display area, two or more display devices 100' are usually spliced ​​to form a spliced ​​display device, and the display device 100' also uses a larger display area. For example, the display screen size of the display device 100' can be 46 to 65 inches, and the long side length of the display device 100' is more than 1000mm. In the related art, the splicing seam of the spliced ​​display device can be as large as 0.88mm. In theory, the width of the splicing seam has been maximized and cannot be further reduced. Therefore, the industry has turned its attention to factors that affect the actual splicing seam effect during terminal assembly, including peripheral dark frames (increasing visual splicing seams), product flatness (increasing the abruptness of the splicing seams under a wide viewing angle), and lightweight. Weight reduction will make it easier for workers to operate and carry the display device 100' when it is spliced, and reduce the occurrence of damage such as bumps. However, with the development of lightweight display devices 100', it is more difficult to control the flatness of the display device 100' due to the production process and performance limitations of the material.

[0066] In the related art, the bracket used for splicing the display device 100' adopts an integrated integral bracket, and the front and rear positions of the display direction can be adjusted little by little by pushing the bolts, so as to achieve the overall adjustment of the front and rear positions of the display device 100'. However, due to the inconsistency of the warping of the four corners of the display device 100', it is difficult to reach a consistent degree of warping of adjacent display devices 100', so it is very difficult to splice adjacent display devices 100' flat. Even if the splicing flexibility in all directions is improved, these solutions all require higher precision of the bracket, increase the volume and weight of the bracket, make handling and transportation more difficult, and increase the cost to a large extent while improving the precision.

[0067] like Figures 1 to 3 As shown, in the display device 100', the back plate and the middle frame are its main shape-preserving structures. The material used for the back plate is generally galvanized steel (SECC) or aluminum, and the material used for the middle frame is generally plastic or aluminum. These galvanized steel, aluminum and plastic are affected by their production capacity and the performance of the material itself, and the four corners of the display device 100' are prone to warping. Generally, the four sides / corners of the back plate and the overall flatness require that the warping shape of the display device 100' is bowl-warping, that is, the four sides / corners of the back plate are warped in the display direction of the display device 100'. If the warping shape of the back plate and the display device 100' is reverse warping, that is, the four sides / corners of the back plate are warped in the back plate direction opposite to the display side, the display panel will be fixed, resulting in destructive display defects. Therefore, the back plate as the main supporting component requires bowl warping, and the warping amount is less than 0.6mm. During the assembly process of the display device 100', the hook cavity of the back plate assembly and the backlight module is facing upward, and the display panel is placed on the hook cavity of the back plate assembly and the backlight module with the display side facing upward. Due to the weight of the product itself, the middle of the back plate assembly, the backlight module and the display device 100' will sag. Figure 2As shown in FIG. 1 , the positions where the display device 100 ′ has the largest warping amount are the two ends and the middle of the display device 100 ′ in the figure.

[0068] The four sides / corners of the display device 100 are prone to warping. The maximum warping amount of the sides or corners of the display device 100' is about 1 mm. When the warping amounts of adjacent display devices 100' are different during splicing, for example, Figure 3 As shown, when the corner of the first display device 110' is warped 1mm toward the display side, and the corner of the second display device 120' adjacent to the first display device 110' is warped 0.5mm toward the display side, that is, there is a difference in the warping amount of the corners of the adjacent display devices 100' at the splicing, resulting in the inability to align the corners of the adjacent display devices 100' after splicing, resulting in a discontinuity in the picture effect. That is, because the degree of warping of the side or corner of the display device 100' cannot be kept consistent and is uncontrollable, the difficulty of splicing the display device 100' increases, and it is difficult to align adjacent display devices 100'. There is a certain misalignment at the splicing seam 200' of the adjacent display devices 100', which affects the splicing seam effect and the display effect. In the related art, although the display direction can be fine-tuned in the front and rear position through the hanger in the middle of the back panel, the adjustment is difficult and the adjustment effect is poor, and the four corners of the display device 100 are still difficult to align.

[0069] In order to solve the technical problems of the difficulty in splicing and aligning display devices, the present disclosure proposes a backplane assembly, such as Figures 4 to 27 As shown, the backplane assembly includes a backplane body 1000 and a positioning splicing piece 2000, the backplane body 1000 includes backplane sides connected end to end in sequence and a backplane corner formed by adjacent backplane sides; the positioning splicing piece 2000 includes a fixing portion 2100 and a sub-parent plug-in structure 2200 arranged on the fixing portion 2100, the fixing portion 2100 is connected to the backplane sides and / or the backplane corners, and the sub-parent plug-in structure 2200 is plugged into the sub-parent plug-in structure 2200 at a corresponding position in an adjacent backplane assembly.

[0070] The backplane assembly proposed in the embodiment of the present disclosure is as follows: Figures 4 to 27As shown, the positioning splicing piece 2000 is fixed to the side and / or the back panel corner of the back panel by the fixing part 2100, and the positioning splicing piece 2000 is added to the back panel body 1000 to form an integral structure with the back panel body 1000, and the adjacent back panel components can be directly plugged into each other through the parent-child plug-in structure 2200, and the adjacent back panel components can be limited by the parent-child plug-in structure 2200, and the adjacent back panel components can be leveled, and then the backlight module and the display device 100 including the back panel component can be leveled through the parent-child plug-in structure 2200, which reduces the deformation caused by the warping of the back panel body 1000 and / or the corner of the middle frame to a certain extent, so that the adjacent back panel components and the backlight module and the display device 100 including the back panel component can be aligned, and the splicing seams between the adjacent back panel components, the backlight module and the display device 100 are avoided to have height misalignment, thereby improving The flatness and display effect of the display device 100 after splicing; at the same time, when the back panel assembly is spliced, the adjacent back panel assemblies, backlight modules and display devices 100 are docked, so that the corresponding parent-child plug-in structure 2200 can be plugged in to complete the operation. The operation is simple and easy, and there is no need to manually adjust the flatness, which reduces the splicing adjustment time. The standardized operation method can meet the splicing flatness requirements, which reduces the difficulty of splicing to a certain extent and improves the splicing assembly efficiency; in addition, the back panel assembly uses a lightweight positioning splicing piece 2000 for splicing and leveling. Considering the splicing and leveling solution from the perspective of the product's own structure, there is no need to set up a large-size splicing frame with a large volume and weight. The positioning splicing piece 2000 has a simple and light structure and is easy to process, which can not only reduce the manufacturing cost of the positioning splicing piece 2000, but also reduce the difficulty and labor cost of transportation and handling.

[0071] The backplane assembly proposed in the embodiment of the present disclosure is as follows: Figures 4 to 27 As shown, by making the back panel assembly, the backlight module and the display device 100 have their own positioning splicing parts 2000, through positioning splicing and adjusting the flatness of the spliced ​​display device, the flatness of the spliced ​​black wire device is consistent, the front and rear positions of the display device 100 / display panel are consistent, and there is no misalignment between each other, which can improve the display effect, make the picture quality more streamlined, and the splicing seam closer to the theoretical design state.

[0072] The backplane assembly proposed in the embodiment of the present disclosure is as follows: Figures 4 to 27 As shown in FIG. 1 , if the adjacent sides of the display device 100 need to be completely in the same plane, the corners and the middle positions of the sides of the display device 100 need to be leveled to the following positions: Fig.10Effect shown; since the position with the largest warping in the display device 100 is located in the corner and / or the middle area of ​​the side, the positioning splicing piece 2000 can be set in the corner and / or the middle area of ​​the side, so that the corner and middle area of ​​the side of the display device 100 can be effectively controlled by the positioning splicing piece 2000; since the back panel body 1000 is the main shape-preserving component in the display device 100, the positioning splicing piece 2000 can be set at the back panel corners and back panel sides of the back panel body 100, so that the purpose of effectively controlling the corners and middle areas of the side of the display device 100 is achieved through effective control of the back panel corners and back panel sides, and ultimately achieving the purpose of improving the splicing flatness of adjacent display devices 100 and improving the display effect.

[0073] Based on the same inventive concept, the disclosed embodiment also proposes a backlight module, which includes a light source assembly, a middle frame assembly and the above-mentioned back panel assembly. The light source assembly is arranged on the second side of the back panel body 1000, and the middle frame assembly is arranged around the back panel body 1000.

[0074] Since the backlight module provided by the present invention includes the backplane assembly of the above technical solution, the backlight module provided by the present invention has all the beneficial effects of the above backplane assembly, which will not be described in detail here.

[0075] Based on the same inventive concept, the embodiment of the present disclosure further proposes a display device 100, which includes a display panel and the above-mentioned backlight module, and the display panel is supported in a middle frame.

[0076] In some embodiments of the present disclosure, the display device 100 may be a liquid crystal display device 100 .

[0077] Since the display device 100 provided by the present invention includes the backlight module of the above technical solution, the display device 100 provided by the present invention has all the beneficial effects of the above backlight module, which will not be described in detail here.

[0078] Based on the same inventive concept, the embodiment of the present disclosure further proposes a spliced ​​display device, which is formed by splicing a plurality of the above-mentioned display devices 100.

[0079] Since the spliced ​​display device provided by the present invention includes the display device 100 of the above technical solution, the spliced ​​display device provided by the present invention has all the beneficial effects of the above display device 100, which will not be described in detail here.

[0080] In some embodiments of the present disclosure, Figures 4 to 5 As shown, the back panel body 1000 can be made of galvanized steel or aluminum.

[0081] In some embodiments of the present disclosure, Figure 4 and Figure 5 As shown, the back panel body 1000 can be a rectangular structure, and the back panel sides are respectively a first side 1110, a second side 1120, a third side 1130 and a fourth side 1140, and correspondingly, the back panel corners formed by adjacent back panel sides are respectively a first corner 1210, a second corner 1220, a third corner 1230 and a fourth corner 1240.

[0082] In some embodiments of the present disclosure, Figure 4 and Figure 5 As shown, the positioning splicing piece 2000 can be arranged at the corners of the back panel, that is, the first corner 1210, the second corner 1220, the third corner 1230 and the fourth corner 1240 are respectively provided with a positioning splicing piece 2000, and the first corner 1210, the second corner 1220, the third corner 1230 and the fourth corner 1240 are spliced ​​with the adjacent back panel body 1000 (display device 100) through the positioning splicing piece 2000. After splicing, the four corners of the display device 100 form an integral stable structure, which is pulled in the up and down directions, left and right directions, and front and back directions, so that the display device 100 is flattened to the same plane, and the display device 100 is leveled by the lightweight positioning splicing piece 2000 to ensure the flatness of the spliced ​​display device formed by splicing the display devices 100.

[0083] In some embodiments of the present disclosure, Fig.14 and Fig.24 As shown, the positioning splicing piece 2000 can be set on the side of the back panel, and can be located in the middle of the back panel side adjacent to the adjacent back panel body 1000 (display device 100). Through the positioning splicing piece 2000 located in the middle of the back panel side, the adjacent back panel body 1000 (display device 100) is flattened into the same plane.

[0084] As an optional implementation, Figures 4 to 12 As shown, the mother-and-child plug-in structure 2200 includes a mother-and-child plug 2210 and / or a mother-and-child slot 2220; wherein the mother-and-child plug 2210 extends toward the outer direction F1 of the corresponding backplane side, and is plugged into the mother-and-child slot 2220 at the corresponding position in the adjacent backplane assembly; the mother-and-child slot 2220 extends toward the inner direction F2 of the corresponding backplane side, and is plugged into the mother-and-child plug 2210 at the corresponding position in the adjacent backplane assembly.

[0085] In some embodiments of the present disclosure, Figures 4 to 12As shown, the mother-and-child plug 2210 extends toward the outer direction F1 of the corresponding back panel side, and protrudes relative to the corresponding back panel side; at the same time, the corresponding position in the adjacent back panel assembly is the mother-and-child slot 2220, and the mother-and-child slot 2220 extends toward the inner direction F2 of the back panel side corresponding to the mother-and-child slot 2220, and is recessed relative to the corresponding back panel side; by plugging the mother-and-child plug 2210 into the mother-and-child slot 2220 at the corresponding position in the adjacent back panel assembly, the adjacent display modules can be connected in alignment, and by plugging the mother-and-child plug 2210 and the mother-and-child slot 2220, the adjacent display modules can be leveled and aligned in the aligned connection position.

[0086] In some embodiments of the present disclosure, Figures 4 to 12 As shown, in the same positioning splicing piece 2000, the fixing part 2100 may be provided with only the sub-mother plug 2210 of the sub-mother plug-in structure 2200, or only the sub-mother slot 2220 of the sub-mother plug-in structure 2200, or both the sub-mother plug 2210 and the sub-mother plug 2210 of the sub-mother plug-in structure 2200, but it is necessary to ensure that the sub-mother plug-in structures 2200 at the adjacent corresponding positions match each other during splicing. Fig.11 and Fig.12As shown, the first display device 110 and the second display device 120 are spliced ​​in the left-right direction, the third display device 130 and the fourth display device 140 are spliced ​​in the left-right direction, the first display device 110 and the fourth display device 140 are spliced ​​in the up-down direction, and the second display device 120 and the third display device 130 are spliced ​​in the up-down direction. At the position where the first display device 110 and the second display device 120 are spliced, the mother-and-child plug-in structure 2200 in the positioning splicing piece 2000 arranged on the first display device 110 is a mother-and-child plug 2210, and correspondingly, the mother-and-child plug-in structure 2200 in the positioning splicing piece 2000 arranged on the second display device 120 is a mother-and-child slot 2220. By inserting the mother-and-child plug 2210 on the first display device 110 into the mother-and-child slot 2220 on the second display device 120, the first display device 110 and the second display device 120 can be aligned and spliced, so that the first display device 110 and the second display device 120 are aligned and connected at the splicing position. At the position where the third display device 130 and the first display device 110 are spliced ​​together, the mother-and-child plug-in structure 2200 in the positioning splicing piece 2000 arranged on the third display device 130 is a mother-and-child plug 2210, and correspondingly, the mother-and-child plug-in structure 2200 in the positioning splicing piece 2000 arranged on the first display device 110 is a mother-and-child slot 2220. By inserting the mother-and-child plug 2210 on the third display device 130 into the mother-and-child slot 2220 on the first display device 110, the third display device 130 and the first display device 110 can be aligned and spliced ​​together, so that the third display device 130 and the first display device 110 are aligned and connected at the splicing position. At the position where the fourth display device 140 and the second display device 120 are spliced, the mother-and-child plug-in structure 2200 in the positioning splicing piece 2000 arranged on the fourth display device 140 is a mother-and-child plug 2210, and correspondingly, the mother-and-child plug-in structure 2200 in the positioning splicing piece 2000 arranged on the second display device 120 is a mother-and-child slot 2220. By inserting the mother-and-child plug 2210 on the fourth display device 140 into the mother-and-child slot 2220 on the second display device 120, the fourth display device 140 and the second display device 120 can be aligned and spliced, so that the fourth display device 140 and the second display device 120 are aligned and connected at the splicing position.At the position where the third display device 130 and the fourth display device 140 are spliced ​​together, the mother-and-child plug-in structure 2200 in the positioning splicing piece 2000 arranged on the third display device 130 is a mother-and-child plug 2210, and correspondingly, the mother-and-child plug-in structure 2200 in the positioning splicing piece 2000 arranged on the fourth display device 140 is a mother-and-child slot 2220. By inserting the mother-and-child plug 2210 on the third display device 130 into the mother-and-child slot 2220 on the fourth display device 140, the third display device 130 and the fourth display device 140 can be spliced ​​in an aligned manner, so that the third display device 130 and the fourth display device 140 are aligned and connected at the splicing position.

[0087] In some embodiments of the present disclosure, Figures 4 to 12 As shown, in order to make the display device 100 more convenient to assemble, the distribution positions of the sub-mother plug 2210 and the sub-mother slot 2220 in the sub-mother plug structure 2200 in the positioning splicing piece 2000 can be adjusted so that the sub-mother plug 2210 and the sub-mother slot 2220 are located on opposite sides of the same splicing seam, thereby facilitating the alignment splicing of the display device 100. At this time, the positioning splicing pieces 2000 located at the four corners of the display device 100 (back panel body 1000) have different structures. For example, Figures 4 to 12 As shown, optionally, the mother-and-child plug 2210 can be located on the right and upper side of the display device 100, and the mother-and-child slot 2220 can be located on the left and lower side of the display device 100; optionally, the mother-and-child plug 2210 can be located on the left and upper side of the display device 100, and the mother-and-child slot 2220 can be located on the right and lower side of the display device 100; optionally, the mother-and-child plug 2210 can be located on the left and lower side of the display device 100, and the mother-and-child slot 2220 can be located on the right and upper side of the display device 100; the mother-and-child plug 2210 can be located on the right and lower side of the display device 100, and the mother-and-child slot 2220 can be located on the left and upper side of the display device 100. During the plugging process, by moving the display device 100 up and down or left and right, the adjacent display modules can be assembled together.

[0088] In some embodiments of the present disclosure, Figures 4 to 12 As shown, optionally,

[0089] As an optional implementation, Figures 4 to 27 As shown, the fixing portion 2100 is stacked on one side of the backplane body 1000, the mother-and-child plug 2210 is a plate-like structure, and the plug surface of the mother-and-child plug 2210 used to contact the mother-and-child slot 2220 is parallel to the backplane body 1000; the slot surface of the mother-and-child slot 2220 used to contact the mother-and-child plug 2210 is parallel to the backplane body 1000.

[0090] As an optional implementation, Figures 4 to 27As shown, the mother-and-child plug 2210 is a plate-like structure. At the same time, the plug surface of the mother-and-child plug 2210 used to contact the mother-and-child slot 2220 is parallel to the backplane body 1000, and the slot surface of the mother-and-child slot 2220 used to contact the mother-and-child plug 2210 is parallel to the backplane body 1000, so that the insertion of the mother-and-child plug 2210 and the mother-and-child slot 2220 is surface contact. On the one hand, it can avoid the risk of torsional dislocation caused by point contact or line release. On the other hand, it can also increase the structural strength through surface contact, so that the corners and sides of the display device 100 are pulled into the same plane through the mother-and-child plug-in structure 2200, thereby ensuring the flatness of the display device 100.

[0091] As an optional implementation, Fig.12 and Fig.13 As shown, the insertion length L1 of the mother-and-child plug 2210 inserted into the mother-and-child slot 2220 is 2 mm to 6 mm.

[0092] In some embodiments of the present disclosure, Fig.12 and Fig.13 As shown, optionally, the insertion length L1 of the sub-mother plug 2210 inserted into the sub-mother slot 2220 can be 2mm to 6mm, and optionally, the insertion length L1 can be 2mm, 3mm, 4mm, 5mm, 6mm, etc. The insertion length L1 can ensure that the sub-mother plug 2210 has sufficient overlap after being inserted into the sub-mother slot 2220, so that the adjacent display device 100 can be leveled by plugging the sub-mother plug 2210 with the sub-mother slot 2220. If the plugging length L1 is less than 2mm, the overlap is too small, the structural strength formed by the plugging of the sub-mother plug 2210 and the sub-mother slot 2220 is weak, and the force generated is small and the adjacent display device 100 cannot be kept flush; if the plugging length L1 is greater than 6mm, the length of the sub-mother plug 2210 is too long, which is easy to cause inconvenience to the plugging operation.

[0093] As an optional implementation, Fig.12 and Fig.13 As shown, the insertion end of the mother-and-child plug 2210 inserted into the mother-and-child slot 2220 is provided with an oblique angle 2211 .

[0094] In some embodiments of the present disclosure, Fig.12 and Fig.13As shown, optionally, by providing an inserting end of the mother-and-child plug 2210 inserted into the mother-and-child slot 2220 with a bevel 2211, it can be ensured that when adjacent display modules are properly aligned, the mother-and-child plugs 2210 between adjacent display modules can all be smoothly inserted into the mother-and-child slots 2220, and there is no need for very accurate alignment during the insertion process. The relative positions of adjacent display modules are automatically adjusted through the guidance of the bevel 2211, and the plugging process of the mother-and-child plug 2210 and the mother-and-child slot 2220 is as smooth as a snap, and the plugging of the mother-and-child plug 2210 and the mother-and-child slot 2220 can be achieved by pushing, and the splicing operation is simple and efficient.

[0095] As an optional implementation, Fig.12 and Fig.23 As shown, the bevel length L2 of the bevel 2211 is 0.8 mm to 1.6 mm.

[0096] In some embodiments of the present disclosure, Fig.12 and Fig.13 As shown, optionally, the bevel length L2 of the bevel 2211 is 0.8 mm to 1.6 mm, so that the bevel 2211 can ensure that the mother-and-child plugs 2210 between adjacent display modules can all be smoothly inserted into the mother-and-child slots 2220, and the automatic guiding effect of the bevel 2211 can be fully utilized. Optionally, the bevel length L2 can be 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, etc.

[0097] As an optional implementation, Figures 4 to 27 As shown, the female and male plugs 2210 are magnetically connected to the slots.

[0098] In some embodiments of the present disclosure, Figures 4 to 27 As shown, by magnetically connecting the mother-and-child plugs 2210 and the slots, the mother-and-child plugs 2210 and the mother-and-child slots 2220 between adjacent display modules can be aligned by magnetic attraction, making the plugging process smoother, and the mother-and-child plugs 2210 can be easily pushed into the mother-and-child slots 2220, so that assembly is more convenient and does not require a lot of time to adjust the alignment. It also avoids possible bumps and damages to the display device 100 during the continuous adjustment process. At the same time, it can also make the splicing structure formed after plugging more stable, and the mother-and-child plugs 2210 are not easy to fall out of the mother-and-child slots 2220.

[0099] In some embodiments of the present disclosure, optionally, the parent-child plug-in structure 2200 may be made of a magnetic material that is relatively light and has high dimensional stability.

[0100] As an optional implementation, Figures 4 to 27As shown, the fixing portion 2100 is provided with at least two fixing holes 2140 , and the fixing portion 2100 is connected to the back plate body 1000 via the fixing holes 2140 .

[0101] In some embodiments of the present disclosure, Figures 4 to 27 As shown, the fixing part 2100 is provided with at least two fixing holes 2140, and correspondingly, the back panel body 1000 is provided with positioning holes corresponding to the fixing holes 2140, and the fixing part 2100 is connected to the positioning holes through the fixing holes 2140 by connecting members such as rivets, so that the fixing part 2100 can be fixed on the back panel body 1000. Through more than two fixing holes 2140, it can be ensured that after the fixing part 2100 is fixed on the back panel body 1000, there is no movement or twisting, so that the positioning and fixing of the fixing part 2100 is achieved, and then the positioning and installation of the parent-child plug-in structure 2200 is achieved, and the installation accuracy of the parent-child plug-in structure 2200 is ensured, so that the splicing accuracy between adjacent display devices 100 after plugging and fixing through the parent-child plug-in structure 2200 can be improved. Optionally, the number of fixing holes 2140 opened on the fixing part 2100 can be 2 to 4, for example, the number of fixing holes 2140 can be 3.

[0102] In some embodiments of the present disclosure, Figures 4 to 27 As shown, the fixing connector 2150 used to fix the fixing portion 2100 to the back plate body 1000 may be a rivet post, and the specification of the rivet post may be M4.

[0103] As an optional implementation, Figures 4 to 14 As shown, the fixing portion 2100 includes a first fixing portion 2110 and a second fixing portion 2120 which are perpendicular to each other, and the first fixing portion 2110 and the second fixing portion 2120 are both provided with a parent-child plug-in structure 2200; the fixing portion 2100 is arranged at a corner of the back panel, and the first fixing portion 2110 and the second fixing portion 2120 are respectively arranged flush with the side edges of the back panel adjacent to the corner of the back panel.

[0104] In some embodiments of the present disclosure, Figures 4 to 14 As shown, in the positioning connector, the fixing portion 2100 may include a first fixing portion 2110 and a second fixing portion 2120 that are perpendicular to each other, and the fixing portion 2100 is in an "L" shape. By setting the fixing portion 2100 at the corner of the back panel, the first fixing portion 2110 and the second fixing portion 2120 can be respectively set flush with the two back panel sides forming the back panel corner, so that the parent-child plug-in structure 2200 on the first fixing portion 2110 can respectively correspond to the two back panel sides forming the back panel corner, and the back panel corner can be leveled from two directions.

[0105] As an optional implementation, Figures 4 to 27As shown, in the same back panel assembly, the positioning splicing pieces 2000 arranged on each back panel corner are the same or different.

[0106] In some embodiments of the present disclosure, Fig.11 and Fig.12 As shown, in the same back panel assembly, the positioning splicing pieces 2000 arranged on each back panel corner are different, so that the positioning splicing pieces 2000 are arranged at the back panel corners, so that in the same splicing seam, the mother-and-child plugs 2210 and the mother-and-child slots 2220 are respectively located on the opposite sides of the same splicing seam, thereby facilitating the alignment splicing of the display device 100.

[0107] In some embodiments of the present disclosure, in the same back panel assembly, the positioning splicing pieces 2000 disposed on the corners of each back panel are the same, and the sub-parent plug-in structure 2200 on each side of the back panel can be matched with the sub-parent plug-in structure 2200 on the side of the adjacent back panel by fixing the positioning splicing piece 2000. For example, in the positioning splicing piece 2000, the fixing portion 2100 includes a first fixing portion 2110 and a second fixing portion 2120 perpendicular to the first fixing portion 2110, the first fixing portion 2110 is provided with a sub-parent plug 2210, and the second fixing portion 2120 is provided with a sub-parent slot 2220. Figure 5 On the back panel body 1000 shown in the figure, the first fixing portion 2110 of the positioning splicing piece 2000 arranged at the first corner 1210 is flush with the first side 1110, and the second fixing portion 2120 of the positioning splicing piece 2000 arranged at the first corner 1210 is flush with the fourth side 1140; the first fixing portion 2110 of the positioning splicing piece 2000 arranged at the second corner 1220 is flush with the second side 1120, and the second fixing portion 2120 of the positioning splicing piece 2000 arranged at the second corner 1220 is flush with the first side 1110; the first fixing portion 2110 of the positioning splicing piece 2000 arranged at the third corner 1230 is flush with the first side 1140. 0 is flush with the third side 1130, and the second fixing portion 2120 of the positioning splicing piece 2000 arranged at the third corner 1230 is flush with the second side 1120; the first fixing portion 2110 of the positioning splicing piece 2000 arranged at the fourth corner 1240 is flush with the fourth side 1140, and the second fixing portion 2120 of the positioning splicing piece 2000 arranged at the fourth corner 1240 is flush with the third side 1130; thereby making each positioning splicing piece 2000 the same, and by changing the fixing direction of each positioning splicing piece 2000, the parent-child plug-in structures 2200 of adjacent back panel bodies 1000 (display devices 100) are matched.

[0108] As an optional implementation, Figures 4 to 8 As shown, at least two female and male plugs 2210 and / or female and male slots 2220 are provided on the fixing portion 2100 .

[0109] In some embodiments of the present disclosure, Figures 4 to 8 As shown, the fixing portion 2100 may be provided with more than two mother-and-child plugs 2210 and / or mother-and-child slots 2220. The contact area between the positioning splicing piece 2000 and the adjacent back panel body 1000 (display device 100) is increased by using more than two mother plugs and / or mother-and-child slots 2220, thereby ensuring the strength of the mother-and-child plug-in structure 2200, improving the leveling effect of the adjacent back panel body 1000 (display device 100), and avoiding the adjacent back panel body 1000 (display device 100) from being misaligned. The mother-and-child plug-in structure 2200 provided on the fixing portion 2100 may all be mother-and-child plugs 2210, may all be mother-and-child slots 2220, or may be mother-and-child plugs 2210 and mother-and-child slots 2220 respectively.

[0110] In some embodiments of the present disclosure, Figures 4 to 8 As shown, optionally, when the fixing portion 2100 includes a first fixing portion 2110 and a second fixing portion 2120 that are perpendicular to each other, at least two mother-and-child plugs 2210 and / or mother-and-child slots 2220 are provided on the first fixing portion 2110, and at least two mother-and-child plugs 2210 and / or mother-and-child slots 2220 are provided on the second fixing portion 2120.

[0111] As an optional implementation, Figures 14 to 27 As shown, the fixing portion 2100 includes a straight fixing portion 2130, and the opposite sides of the straight fixing portion 2130 are respectively provided with a mother-and-child plug 2210 and a mother-and-child slot 2220; the straight fixing portion 2130 is arranged on the side of the back panel, and the straight fixing portion 2130 is arranged flush with the side of the back panel.

[0112] In some embodiments of the present disclosure, Figures 14 to 27 As shown, the fixing part 2100 includes a straight fixing part 2130, and the opposite sides of the straight fixing part 2130 are respectively provided with a mother-and-child plug 2210 and a mother-and-child slot 2220. When the straight fixing part 2130 is set on the side of the backplane and the straight fixing part 2130 is set flush with the side of the backplane. On a certain backplane body 1000, the mother-and-child plug 2210 can be extended toward the outside of the backplane side, and on an adjacent backplane body 1000, the mother-and-child slot 2220 can be extended toward the inside of the backplane side, so that the mother-and-child plug-in structures 2200 between adjacent backplane bodies 1000 are matched.

[0113] In some embodiments of the present disclosure, Fig.14As shown, the positioning splicing piece 2000 can be arranged in the middle of the side of the back plate. The warping amount in the middle of the side of the back plate is flattened by the positioning splicing piece 2000, so that the adjacent side of the back plate can be flush. Optionally, two fixing holes 2140 can be opened on the fixing part 2100 of the positioning splicing piece 2000, and the positioning splicing piece 2000 can be fixed on the side of the back plate by passing two connecting pieces through the fixing holes 2140.

[0114] In some embodiments of the present disclosure, Fig.15 As shown, in the back panel body 1000, a plurality of positioning holes (the part shown by the dotted line in the figure) can be preset on the side of the back panel, and according to the warping condition of the back panel body 1000, the positioning splicing piece 2000 can be specifically set at the side of the back panel where the warping exists, so as to ensure the flatness of a few irregularly shaped back panel bodies 1000.

[0115] In some embodiments of the present disclosure, Fig.15 As shown, the fixing portion 2100 in the positioning splicing piece 2000 is a straight fixing portion 2130, and the length of the straight fixing portion 2130 can be lengthened to match the length of the side of the back panel. The extended straight fixing portion 2130 is provided with an extended mother-and-child plug 2210 / mother-and-child slot 2220. On the one hand, the extended straight fixing portion 2130 can increase the structural strength of the side of the back panel, correct the warping of the side of the back panel, and further improve the splicing effect; on the other hand, the extended mother-and-child plug 2210 / mother-and-child slot 2220 can improve the splicing strength of adjacent back panel bodies 1000 (display device 100) and the ability to level adjacent back panel bodies 1000 (display device 100).

[0116] In some other embodiments of the present disclosure, optionally, the fixing portion 2100 in the positioning splicing piece 2000 is a straight fixing portion 2130, and the length of the straight fixing portion 2130 can be lengthened to match the length of the side of the back panel, and a plurality of parent-child plug-in structures 2200 are provided on the straight fixing portion 2130 of the extended length.

[0117] As an optional implementation, Figures 17 to 23 As shown, the straight fixing portion 2130 is in the shape of a handle.

[0118] In some embodiments of the present disclosure, Figures 17 to 23 As shown, the spliced ​​display medical social security requires multiple display devices 100 when splicing and assembling. Generally, a handle is provided on the back panel of the back of the display device 100 to facilitate transportation and installation. Optionally, the handle can be provided on the back panel side of the back panel body 1000 (display device 100).

[0119] In some embodiments of the present disclosure, Figures 17 to 23As shown, optionally, the positioning splicing piece 2000 can be combined with the structure and function of the handle, so that the straight fixing portion 2130 is in the shape of a handle. That is to say, when the positioning splicing piece 2000 is set on the side of the back plate, the positioning splicing piece 2000 can play the role of a handle and also play the role of splicing and leveling; or, by structurally modifying the original handle of the display device 100, the handle has a parent-child plug-in structure 2200, so that the handle can play the role of a handle and also play the role of splicing and leveling.

[0120] As an optional implementation, Figures 17 to 23 As shown, the female and male plugs 2210 can be movably disposed on the straight fixing portion 2130 .

[0121] In some embodiments of the present disclosure, Figures 17 to 23 As shown, optionally, on the straight fixing portion 2130 in the shape of a handle, the mother-and-child plug 2210 is movably arranged on the straight fixing portion 2130. When the straight fixing portion 2130 is used as a handle or is packaged, stored and transported, the mother-and-child plug 2210 is retracted into the straight fixing portion 2130 to prevent the mother-and-child plug 2210 from interfering with the gripping handle or affecting packaging, storage and transportation. When the straight fixing portion 2130 is used as a positioning splicing piece 2000, the mother-and-child plug 2210 is extended from the straight fixing portion 2130 to be plugged into the corresponding mother-and-child slot 2220 on the adjacent back panel body 1000 (display device 100) to flatten the adjacent display modules and improve the flatness of the adjacent display modules.

[0122] As an optional implementation, Figures 17 to 23 As shown, the insertion end of the mother-and-child plug 2210 inserted into the mother-and-child slot 2220 is provided with an elastic buckle portion 2212, the mother-and-child slot 2220 is provided with a hook cavity for accommodating the elastic hook portion, and the opening of the mother-and-child slot 2220 is provided with an anti-disengagement block 2221.

[0123] In some embodiments of the present disclosure, Figures 17 to 23 As shown, optionally, the female and male plug 2210 and the female and male slot 2220 are relatively arranged on the handle-shaped straight fixing portion 2130, and the female and male plug 2210 can be movably arranged on the straight fixing portion 2130. Fig.18 As shown, in the handle-shaped straight fixing part 2130, the female and male plugs 2210 are retracted into the straight fixing part 2130, and the surface of the position where the female and male plugs 2210 are pulled out of the straight fixing part 2130 is rounded and fits well, making the handle-shaped straight fixing part 2130 easy to pack, carry and transport. Fig.19As shown, when the mother-and-child plug 2210 is pulled out from the handle-shaped straight fixing portion 2130, it can slide freely within a certain stroke; optionally, the insertion end of the mother-and-child plug 2210 inserted into the mother-and-child slot 2220 is provided with an elastic snap portion 2212, and accordingly, the mother-and-child slot 2220 is provided with a hook cavity for accommodating the elastic snap portion. When the mother-and-child plug 2210 is pulled out from the straight fixing portion 2130 and inserted into the mother-and-child slot 2220 on the adjacent backplane body 1000 (display module), the elastic snap portion 2212 can enter the hook cavity and engage with the straight fixing portion 2130, and cannot naturally escape from the hook cavity. Fig.23 As shown, the elastic hook portion can be a sheet-like structure, and the part of the mother-and-child plug 2210 under the elastic hook portion can be "mushroom-shaped". When the mother-and-child plug 2210 is inserted into the mother-and-child slot 2220 on the adjacent backplane body 1000 (display module), the elastic hook portion elastically contracts and presses together. When the elastic hook portion enters the hook cavity, the elastic hook portion naturally opens and the engagement is completed. Optionally, the insertion end of the mother-and-child plug 2210 inserted into the mother-and-child slot 2220 can be a rounded structure, so that it can be easily inserted into the mother-and-child slot 2220 on the adjacent backplane body 1000 (display module), making the insertion of the mother-and-child plug 2210 into the mother-and-child slot 2220 smoother.

[0124] Optionally, an anti-slip block 2221 is provided at the opening of the parent-child slot 2220. After the elastic hook portion naturally opens in the hook cavity, the anti-slip block 2221 limits the position of the elastic hook portion so that it remains naturally opened and cannot slip out of the parent-child slot 2220.

[0125] As an optional implementation, Figure 24 to Figure 27 As shown, the mother-and-child slot 2220 is a slide groove arranged in the fixing portion 2100, and a limiting portion is provided in the mother-and-child slot 2220; the mother-and-child plug 2210 can be slidably arranged in the slide groove, and the mother-and-child plug 2210 is provided with a limiting protrusion 2213.

[0126] In some embodiments of the present disclosure, Figure 24 to Figure 27 As shown, the mother-and-child slot 2220 is a slide groove arranged in the fixing portion 2100, and a limiting portion is provided in the mother-and-child slot 2220; the mother-and-child plug 2210 can be slidably arranged in the slide groove, and the mother-and-child plug 2210 is provided with a limiting protrusion 2213; when the positioning splicing piece 2000 is fixed to the side of the back panel through the fixing portion 2100, the mother-and-child plug 2210 can be slidably extended in the outer direction F1 of the side of the back panel, and at the same time, limited by the action of the limiting portion in the slide groove, the limiting protrusion 2213 can slide within the range of the slide groove limited by the limiting portion.

[0127] In some embodiments of the present disclosure, Fig.25As shown, in the initial state, the mother-and-child plug 2210 is in a retracted state, and the mother-and-child plug 2210 is completely located in the slide groove. Fig.26 and Fig. 27 As shown, the sub-mother plug 2210 can be pushed from below the sub-mother plug 2210. After being pushed to a certain position, the limiting protrusion 2213 cannot be pushed any further under the limitation of the limiting portion. At the same time, the sub-mother plug 2210 can be inserted into the corresponding sub-mother slot 2220 on the adjacent backplane body 1000 (display module) with zero clearance, so as to realize the plugging of the sub-mother plug 2210 and the sub-mother slot 2220. The misalignment of the display device 100 in the front-to-back direction is automatically adjusted by the sub-mother plug 2210 and the sub-mother slot 2220. At the same time, since the sub-mother plug 2210 is connected to the sub-mother slot 2220 by magnetic attraction, the sub-mother plug 2210 can be kept in the slide slot inserted as the sub-mother slot 2220 by magnetic attraction.

[0128] In some embodiments of the present disclosure, Fig.24 and Fig. 27 As shown, adjacent back panel bodies 1000 (display modules) can be spliced ​​and aligned through the positioning splicing pieces 2000 of this structure. The structures of the positioning splicing pieces 2000 on adjacent back panel bodies 1000 (display modules) are the same, but the setting direction of the positioning splicing pieces 2000 on the back panel body 1000 (display module) needs to be adjusted so that the mother-and-child plugs 2210 and the mother-and-child slots 2220 of the positioning splicing pieces 2000 on the adjacent bodies (display modules) can be matched and plugged in.

[0129] It should be noted that all directional indications in the embodiments of the present disclosure are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0130] In the present disclosure, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0131] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this disclosure.

[0132] Although embodiments of the present disclosure have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A backplane assembly, characterized in that: The back panel assembly comprises: A back panel body, the back panel body comprising back panel side edges connected end to end in sequence and a back panel corner formed by adjacent back panel side edges; A positioning splicing piece, the positioning splicing piece includes a fixing portion and a mother-and-child plug-in structure arranged on the fixing portion, the fixing portion is connected to the side edge of the back panel and / or the corner of the back panel, and the mother-and-child plug-in structure is plugged into the mother-and-child plug-in structure at a corresponding position in an adjacent back panel assembly.

2. The back plate assembly according to claim 1, characterized in that: The parent-child plug-in structure includes a parent-child plug and / or a parent-child slot; wherein, The mother-and-child plugs extend toward the outer side of the corresponding backplane side and are plugged into the mother-and-child slots at corresponding positions in the adjacent backplane assembly; The mother-and-child slots extend toward the inner side of the corresponding backplane side and are plugged into the mother-and-child plugs at corresponding positions in the adjacent backplane assembly.

3. The back plate assembly according to claim 2, characterized in that: The fixing part is stacked on one side of the backplane body, the mother-and-child plug is a plate-like structure, the plug surface of the mother-and-child plug used to contact the mother-and-child slot is parallel to the backplane body; the slot surface of the mother-and-child slot used to contact the mother-and-child plug is parallel to the backplane body.

4. The back plate assembly according to claim 3, characterized in that: The insertion length of the mother-and-child plug inserted into the mother-and-child slot is 2 mm to 6 mm.

5. The back plate assembly according to claim 4, characterized in that: The insertion end of the male and female plug inserted into the male and female slot is provided with an oblique angle.

6. The back plate assembly according to claim 5, characterized in that: The bevel length of the bevel is 0.8 mm to 1.6 mm.

7. The back plate assembly according to claim 2, characterized in that: The female and male plugs are magnetically connected to the slots.

8. The back plate assembly according to claim 1, wherein: The fixing portion is provided with at least two fixing holes, and the fixing portion is connected to the back plate body through the fixing holes.

9. The back plate assembly according to any one of claims 1 to 8, characterized in that: The fixing part includes a first fixing part and a second fixing part which are perpendicular to each other, and the first fixing part and the second fixing part are both provided with the parent-child plug-in structure; the fixing part is arranged at the corner of the back panel, and the first fixing part and the second fixing part are respectively arranged flush with the side edges of the back panel adjacent to the corner of the back panel.

10. The back plate assembly according to claim 9, characterized in that: In the same back panel assembly, the positioning splicing pieces arranged on each back panel corner are the same or different.

11. The back plate assembly according to any one of claims 2 to 7, characterized in that: At least two of the mother-and-child plugs and / or the mother-and-child slots are provided on the fixing portion.

12. The back plate assembly according to any one of claims 2 to 7, characterized in that: The fixing portion comprises a straight fixing portion, and the opposite sides of the straight fixing portion are respectively provided with the mother-and-child plug and the mother-and-child slot; the straight fixing portion is arranged on the side of the back panel, and the straight fixing portion is arranged flush with the side of the back panel.

13. The back plate assembly according to claim 12, wherein: The straight fixing portion is in a handle shape.

14. The back plate assembly according to claim 13, wherein: The female and male plugs are movably arranged on the straight fixing portion.

15. The back plate assembly according to claim 14, wherein: An elastic buckle portion is provided at the insertion end of the mother-and-child plug inserted into the mother-and-child slot, a hook cavity for accommodating the elastic buckle portion is provided in the mother-and-child slot, and an anti-dropping block is provided at the opening of the mother-and-child slot.

16. The back plate assembly according to claim 14, wherein: The mother-and-child slot is a slide groove arranged in the fixing part, and a limiting part is arranged in the mother-and-child slot; the mother-and-child plug can be slidably arranged in the slide groove, and the mother-and-child plug is provided with a limiting protrusion.

17. A backlight module, characterized in that: The backlight module includes a light source assembly, a middle frame assembly, and a back panel assembly as described in any one of claims 1 to 16, wherein the light source assembly is disposed on the second side surface of the back panel body, and the middle frame assembly is disposed around the back panel body.

18. A display device, characterized in that: The display device comprises a display panel and the backlight module as claimed in claim 17, and the display panel is supported in the middle frame.

19. A splicing display device, characterized in that: The spliced ​​display device is formed by splicing a plurality of display devices as described in claim 18.

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