CN114937409A

CN114937409A - Splicing sheet, splicing assembly and spliced display screen

Info

Publication number: CN114937409A
Application number: CN202210756999.7A
Authority: CN
Inventors: 肖忠俊; 李军
Original assignee: Huizhou Jufei Optoelectronics Co ltd
Current assignee: Huizhou Jufei Optoelectronics Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-08-23

Abstract

The invention relates to a splicing sheet, a splicing assembly and a spliced display screen, wherein the splicing sheet supports splicing of a middle frame from the front side of the middle frame and splicing of the middle frame from the rear side of the middle frame, so that the splicing and mounting compatibility of the middle frame is improved, the application occasion of the spliced display screen is expanded, and the splicing and mounting difficulty is reduced. Meanwhile, the front-side splicing and the rear-side splicing share the same splicing screw hole and the same splicing through hole, so that the situation that the mechanical strength of the middle frame is reduced due to the fact that holes are formed for the front-side splicing and the rear-side splicing on the splicing piece assembling area and the splicing piece is avoided, and the bearing capacity of the middle frame is favorably improved. And moreover, the center is matched with the splicing sheet through a hole pin when the center is connected with the splicing sheet, so that the splicing precision of the center can be improved. Simultaneously, lamellar body and shop bolt integrated into one piece in the concatenation piece can further promote the bearing capacity of concatenation piece like this, strengthens the quality of tiled display screen.

Description

Splicing sheet, splicing assembly and spliced display screen

Technical Field

The invention relates to the field of display products, in particular to a splicing sheet, a splicing assembly and a spliced display screen.

Background

At present, a display screen for occasions such as an outdoor display screen, a large-scale exhibition, a conference and the like is generally formed by splicing a plurality of display devices with small display areas together, and the display devices cooperatively realize a display function under the control of a controller. In some present concatenation schemes, two display device need be used the concatenation piece when splicing, and the degree of cooperation of prior art concatenation piece and display screen is not enough, leads to the installation effectiveness to be difficult to improve.

Disclosure of Invention

In view of above-mentioned correlation technique not enough, the aim at of this application provides a concatenation piece, concatenation subassembly and concatenation display screen, and the concatenation piece aims at solving present concatenation screen and the cooperation degree of concatenation piece not enough, the problem that the installation effectiveness is low.

The embodiment of the application provides a splicing sheet, which comprises a sheet body, a splicing through hole and a positioning pin, wherein the splicing through hole and the positioning pin are positioned on the sheet body; the splicing sheet is used for splicing at least two middle frames, and each middle frame is provided with a front side for mounting the display module and a rear side opposite to the front side; the outer contour of the middle frame is rectangular, four corners of the rectangle are respectively provided with a top angle area, at least one top angle area is provided with a splicing sheet assembly area used for being matched with a splicing sheet, and the splicing sheet assembly area comprises an assembly front area and an assembly rear area which are respectively positioned on the front side and the rear side of the middle frame; a splicing screw hole and a positioning pin hole are formed in the splicing sheet assembling area, and the positioning pin is configured to be matched with the positioning pin hole; the splicing through hole of the splicing sheet is configured to be fixedly connected with the splicing screw hole through a threaded fastener.

The splicing pieces support splicing of the middle frame from the front side or the rear side of the middle frame. The splicing sheet is provided with the pin, so that the bearing capacity of the splicing sheet to the middle frame is improved. And the positioning pin on the splicing sheet is configured to be matched with the positioning pin hole on the middle frame, the splicing through hole of the splicing sheet is configured to be fixedly connected with the splicing screw hole on the middle frame through a threaded fastener, and when the splicing sheet is installed, the splicing sheet is not only locked and connected through the threaded fastener, but also can be matched with the positioning pin hole through the positioning pin. The hole pin cooperation of a side can be through the locating pin earlier with the locating pin hole rapid Assembly on the center with splicing piece when assembling with the center, realizes rapidly that "pre-connection" of center and splicing piece maintains the relative position relation between center and splicing piece before threaded fastener plays a role to the splicing through-hole on the splicing piece of being convenient for passes through threaded fastener and fast and the concatenation screw fastening connection on the center. Facilitating installation and locking of threaded fasteners; simultaneously, piece body and dowel pin integrated into one piece in the concatenation piece, can use the piece body of concatenation piece to refer to when concatenation through-hole and dowel pin cooperate, the position of accurate definite concatenation through-hole and dowel pin, use the position of dowel pin as the cooperation benchmark and through with the locating pin hole cooperation on the center can promote the cooperation precision of concatenation piece and center to a certain extent, promote the degree of cooperation of concatenation piece and center, reduce the concatenation seam, strengthen the quality of the concatenation display screen that the concatenation formed.

The application also provides a splicing assembly, which comprises the splicing sheet, a threaded fastener, a first auxiliary connecting sheet and a second auxiliary connecting sheet; the splicing sheet is also provided with a connecting hole with an internal thread, the connecting hole is a threaded hole, a threaded fastener is configured to be fastened and connected with the splicing screw hole and the splicing through hole of the splicing sheet, an external fixing hole is arranged in a splicing sheet assembling area on the middle frame, and the first auxiliary connecting sheet is configured to be connected with the connecting hole with the internal thread on the splicing sheet through the threaded fastener; the second secondary connection tab is configured to connect with the external fixation hole of the middle frame via a threaded fastener.

The concatenation through-hole of above-mentioned concatenation piece supports the concatenation piece to carry out fastening connection from the front side or the rear side and the center of center, the connecting hole of concatenation piece supports concatenation piece and first auxiliary connection piece to pass through threaded fastener and connects, can install the center on a installing support from the rear side of center, need not additionally set up the hole of being connected with first auxiliary connection piece on the center, the structure of center can be simplified, the second auxiliary connection piece is configured to pass through threaded fastener with the center and is connected, can install the center on an installing support from the front side of center, and the joint strength is increased.

The application further provides a spliced display screen which at least comprises two display modules, a plurality of threaded fasteners, at least two middle frames and the spliced sheet; the middle frame is provided with a front side for installing the display module and a rear side opposite to the front side; the outer contour of the middle frame is rectangular, four corners of the rectangle are respectively provided with a top angle area, at least one top angle area is provided with a splicing sheet assembly area used for being matched with a splicing sheet, and the splicing sheet assembly area comprises an assembly front area and an assembly rear area which are respectively positioned on the front side and the rear side of the middle frame; a splicing screw hole and a positioning pin hole which penetrate through the middle frame are formed in the splicing sheet assembly area; the positioning pin hole is matched and connected with the positioning pin of the splicing sheet, one end of the threaded fastener penetrates through the splicing through hole from the front side of the middle frame and then is locked with the splicing screw hole to fix the middle frame and the splicing sheet, or one end of the threaded fastener penetrates through the splicing through hole from the rear side of the middle frame and then is locked with the splicing screw hole to fix the middle frame and the splicing sheet.

The center of above-mentioned tiled display screen sets up concatenation piece assembly area in its at least one apex angle region to with the concatenation piece cooperation that is located center front side or rear side, be provided with the concatenation screw that runs through in concatenation piece assembly area, it corresponds with the concatenation through-hole on the concatenation piece, and threaded fastener's one end can pass the concatenation screw and realize that the locking of center and concatenation piece is fixed with the concatenation through-hole. The utility model provides a tiled display screen is because in the apex angle region with tiled piece complex tiled piece assembly area simultaneously including the preceding assembly area that is located the center front side, be located the back assembly area of center rear side, therefore, this center both supports the concatenation from the front side, also support from the rear side concatenation, installer can select a concatenation mode wantonly according to tiled display screen's installation place environment, the installation compatibility of center has been promoted, the application scenario of tiled display screen has been expanded, the tiled installation degree of difficulty has been reduced. Moreover, when the middle frame is matched with the splicing sheet, the middle frame is not only locked and connected through the threaded fastener, but also can be matched with the positioning pin hole through the positioning pin. The hole pin is matched on one side, so that the pre-connection between the middle frame and the splicing sheet can be quickly realized after the splicing sheet is placed in the splicing sheet assembly area, and the relative position relation between the middle frame and the splicing sheet is maintained before the threaded fastener plays a role, so that the threaded fastener is convenient to mount and lock; on the other hand, the pin-hole cooperation has higher cooperation precision, consequently can promote the connection precision between center and the piece of splicing, center and the center based on the cooperation of locating pin and locating pin hole, reduces and assembles the gap, promotes and assembles the precision. Simultaneously, lamellar body and dowel integrated into one piece in the concatenation piece, can further promote the bearing capacity of concatenation piece like this, the quality of reinforcing concatenation display screen.

In some embodiments, the fit clearance of the splice screw bore to the threaded fastener is greater than the fit clearance of the dowel bore to the dowel pin. Such cooperation can ensure the concatenation gap of tiled display screen in the design range through the cooperation of locating pin hole and locating pin on the one hand, and on the other hand concatenation screw and threaded fastener's effect is mainly from the axial of threaded fastener taut center and concatenation drape over one's shoulders the piece, so concatenation screw and threaded fastener's fit gap can be some greatly, and when being convenient for assemble, quick installation improves assembly efficiency.

In some embodiments, the splicing sheet is arranged at the assembling front area of the middle frame, the assembling front area of the middle frame is provided with a recess for a part of the splicing sheet to be embedded into the middle frame, and the depth of the recess at the assembling front area is greater than or equal to the thickness of the splicing sheet; the region of the assembly front region close to the vertex of the rectangle is provided with a vertex angle protrusion, the sheet body is provided with a limiting groove, the limiting groove penetrates through the splicing sheet, and the vertex angle protrusion is matched with the limiting groove.

Among the above-mentioned tiled display screen, because preceding assembly area is sunken to the rear side, can be so that the partial embedding of spliced piece that is located the front side, can reduce the thickness of the tiled display screen that obtains behind center front side sets up display module assembly like this. Moreover, the depth of the recess of the assembly front area is greater than or equal to the thickness of the splicing sheet, so that the splicing sheet can be completely embedded into the middle frame in the thickness direction, the thickness of the spliced display screen is further reduced, and the delicacy of the spliced display screen is enhanced. In addition, the region of the assembly front area close to the vertex of the rectangle is provided with a vertex angle bulge which is used for matching with the limiting groove on the splicing sheet, when the splicing sheet is embedded into the assembly front area, the vertex angle bulge extends into the limiting groove, so that the splicing sheet can be sleeved on the vertex angle bulges of at least two middle frames, and the pre-fixation between the adjacent middle frames is realized in the direction parallel to the display surface; more importantly, the apex angle is protruding can support display module assembly, avoids the corner that display module assembly and apex angle region correspond slightly the problem of collapsing because of lacking the support, has promoted the roughness of concatenation display screen display surface.

In some embodiments, the tiled display screen further comprises a mounting bracket and a first auxiliary connecting piece, wherein a first connecting hole is formed in the first auxiliary connecting piece, the tiled piece is mounted in the assembled area of the middle frame, and the first connecting hole and the connecting hole with the internal thread in the tiled piece are respectively arranged on two sides of the mounting bracket and are connected through a threaded fastener to fix the tiled display screen on the mounting bracket.

Above-mentioned tiled display screen can be followed the center rear side through first pair connection piece and fixed tiled display article on the installing support, and the installer of being convenient for carries out the installation operation at the center rear side. Because the connecting holes with internal threads on the splicing sheets are matched with the first auxiliary connecting sheets to be installed on the support, additional threaded holes do not need to be formed in the middle frame, and the structural strength of the middle frame is prevented from being damaged.

In other embodiments, the tiled display screen further comprises a mounting bracket and a second auxiliary connecting piece, wherein a second connecting hole is formed in the second auxiliary connecting piece, an external fixing hole penetrating through the middle frame is further formed in at least one vertex angle area of the middle frame, and the external fixing hole and the second connecting hole in the second auxiliary connecting piece are respectively arranged on two sides of the mounting bracket and are connected through threaded fasteners so as to fix the tiled display screen on the mounting bracket.

Be provided with outside fixed orifices in the above-mentioned center, it can be connected with the vice connection piece cooperation of second through threaded fastener from the center front side to realize that the center is installed on the installing support, make things convenient for installer to carry out the installation operation from the front side of center. In some embodiments, the threaded fastener may also be threaded into a mounting carrier, which may be a wall, through the external fastening hole from the front mounting area of the center frame, and the threaded fastener may be a blast screw.

In some embodiments, the positioning pin hole penetrates through the front side and the back side of the middle frame, and one end of the positioning pin hole facing the front side of the middle frame can be used for inserting the positioning pin from the front side of the middle frame, and the other end can be used for inserting the inlet of the positioning pin from the back side of the middle frame.

In the spliced display screen, the positioning pin holes are through holes, and the same positioning pin holes on the middle frame can be shared no matter the spliced sheets are positioned on the front side of the middle frame or on the rear side of the middle frame, so that the processing burden caused by respectively arranging the positioning pin holes in the front assembling area and the rear assembling area is avoided, and the production difficulty of the middle frame is favorably reduced; meanwhile, the influence on the strength of the splicing sheet assembly area due to too many holes in the splicing sheet assembly area is avoided.

In some embodiments, the middle frame is provided with a rear cover shielding area, the rear cover shielding area is an area shielded by a rear cover mounted on the middle frame, and the rear cover shielding area is not overlapped with the splicing sheet assembling area.

Among the above-mentioned tiled display screen, the back lid of center shelters from district and concatenation piece assembly area and does not have the overlapping, consequently, after the lid is installed the center with the back on, the back lid can not shelter from concatenation piece assembly area, so, the cooperation of center and concatenation piece can not influence the cooperation of center and back lid, also the concatenation of center can not influence the installation of back lid.

Drawings

Fig. 1 is a schematic structural diagram of a middle frame provided in an alternative embodiment of the present invention;

FIG. 2 is a schematic view of a splice tab engaged with a threaded fastener provided in an alternative embodiment of the invention;

FIG. 3 is a schematic structural diagram of a middle frame provided in an alternative embodiment of the present invention;

FIG. 4 is a schematic view of a splice tab provided in an alternative embodiment of the present invention in cooperation with a front assembled area of a center frame;

FIG. 5 is a schematic illustration of a splice with a threaded fastener provided in an alternative embodiment of the present invention;

FIG. 6-1 is a schematic illustration of a combination of a center frame, a splice, and a bracket and a first secondary connecting piece provided in an alternative embodiment of the present invention;

FIG. 6-2 is a schematic view of a combination of the center frame, splice, and bracket and second secondary connecting piece provided in an alternative embodiment of the present invention;

FIG. 7 is an exploded view of a tiled display screen provided in an alternative embodiment of the present invention;

FIG. 8 is a schematic view of a tiled display screen provided in an alternative embodiment of the present invention;

FIG. 9 is a schematic view of a display module and a middle frame according to another alternative embodiment of the present invention;

FIG. 10 is a schematic structural view of a connecting rod of a second magnetic element according to another alternative embodiment of the present invention;

FIG. 11 is a schematic view of a second magnetic element of the middle frame according to another alternative embodiment of the present invention;

FIG. 12 is a schematic view of a second magnetic element according to another alternative embodiment of the present invention;

fig. 13 is a schematic back view of a display module according to another alternative embodiment of the present invention;

fig. 14 is an exploded schematic view of a display device provided in yet another alternative embodiment of the present invention;

FIG. 15 is a schematic view of a middle frame and a rear cover in accordance with an alternative embodiment of the present invention;

FIG. 16 is a schematic view of an installation of a display support module on a bezel provided in an alternative embodiment of the present invention;

fig. 17 is an exploded view of a display device provided in an alternative embodiment of the present invention;

FIG. 18 is an exploded view of a rear cover provided in yet another alternative embodiment of the present invention;

FIG. 19 is a schematic view of a back cover according to yet another alternative embodiment of the present invention;

fig. 20 is a partially enlarged view of the region Q in fig. 19.

Description of reference numerals:

10-middle frame; 100-a splice assembly zone; 100 a-front assembled area; 100 b-post-assembly zone; 101-splicing screw holes; 102-dowel holes; 103-top angle convex; 104-external fixation holes; 105-lifting a handle; 106-boss; 11-edge beam; 12-a centre beam; 111-a second magnetically attractive element; 111 a-magnetic front end; 111 b-fixed back end; 1110-magnetic attachment holes; 1111-connecting rod; 1112-a magnetic disc; 112-a second cotter link; 113-a hollowed-out area; 114-a fourth magnetically attractive element; 1151-a tongue groove; 1152-a shield; 20-a splice tab; 201-splicing through holes; 202-locating pins; 203-a limit groove; 204-boss; 205-connecting hole with internal thread; 30-a threaded fastener; 40-a display module; 401-a lamp panel; 402-a bottom shell; 4020-heat sink fins; 403-a line distribution board; 4030-external interface; 411-a first magnetic attraction; 412-a first cotter pin joint; 413-a fixed ring; 414-module grip; 50-a rear cover; 501-rear cover body; 5010-handle window; 5011-thin edge zone; 502-window stop; 5020-connecting wedge; 503-rotating connector; 5031-a first connection end; 5032-a second connection end; 5033-Pivot; 511-a third magnetic attraction; 512-a tongue-and-groove piece; 60-display support module; 61-a first external fixation member; 62-a first secondary connection pad; 63-a mounting bracket; 64-a second secondary connection tab; 7-splicing the display screen; 8-display device.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

The matching degree of the splicing sheet and the middle frame in the prior art is insufficient, so that the installation efficiency is difficult to improve.

Based on this, the present application intends to provide a solution to the above technical problem, the details of which will be set forth in the following embodiments.

An alternative embodiment of the present application:

as shown in fig. 2 and fig. 5, the present embodiment first provides a splicing sheet 20, where the splicing sheet is used for splicing at least two middle frames (see fig. 4, fig. 6-1, and fig. 6-2), please refer to a schematic structural diagram of the middle frame shown in fig. 1:

the middle frame 10 is also called a "box body," and serves as a mounting carrier for main components of a display module, a power supply, a signal adapter card, and the like in the display device, and has high strength and load-bearing capacity, for example, in some examples of the embodiment, the middle frame 10 is made of metal or alloy material. The middle frame 10 is a frame structure having four side beams 11, and the four side beams 11 are connected end to make the outer contour of the middle frame 10 rectangular. In the present embodiment, a side of the middle frame 10 on which the display module is mounted is referred to as a front side of the middle frame 10, and a side opposite to the front side is a rear side of the middle frame 10, and in general, the rear side of the middle frame 10 is on which a rear cover of the display device is mounted.

Needless to say, the rectangular middle frame 10 has four vertices and four corners, and the regions corresponding to the vertices are referred to as "corner regions" in the present embodiment. At least one of the four vertex angle regions on the middle frame 10 is provided with a splicing piece assembling area 100 used for being matched with a splicing piece, the splicing piece assembling area 100 is configured to be matched with the splicing piece 20, and the splicing piece 20 is used for splicing at least two middle frames 10 together through at least two threaded fasteners 30, so that when the middle frames 10 are spliced, the splicing piece 20 is simultaneously connected and fixed with at least two middle frames 10. In this embodiment, the splicing sheet 20 includes a sheet-shaped sheet body, and a splicing through hole and a positioning pin provided on the sheet body. Referring to fig. 2, a schematic view of a splice plate 20 mated with a threaded fastener 30 is provided: the splicing sheet 20 is provided with at least two splicing through holes 201 (the splicing through holes have no threads) corresponding to at least two middle frames 10, in fig. 2, the splicing sheet 20 is substantially rectangular, four splicing through holes 201 are arranged on the splicing sheet and are respectively located at 4 corners of the splicing sheet, and each splicing through hole 201 corresponds to one middle frame 10, so that the splicing sheet 20 shown in fig. 2 can splice the four middle frames 10 together. The splicing piece assembling area 100 is provided with splicing screw holes 101, the splicing screw holes 101 penetrate through the front side and the rear side of the middle frame 10, the splicing screw holes 101 correspond to the splicing through holes 201 one to one, the splicing screw holes 101 and the splicing through holes 201 are matched with the threaded fasteners 30, one ends of the threaded fasteners 30 penetrate through the splicing through holes 201 to be locked with the splicing screw holes 101 in the middle frame through threaded connection, and the splicing piece 20 is locked with the middle frame 10.

In the present embodiment, the splicing sheet assembly region 100 includes a front assembly region located at the front side of the middle frame 10 and a rear assembly region located at the rear side of the middle frame 10, please refer to fig. 1 and 3, it can be understood that the front assembly region 100a (the position indicated by the dashed line frame in fig. 1) is opposite to the rear assembly region 100b (the position indicated by the dashed line frame in fig. 3), so that, in the present embodiment, when the middle frame 10 is spliced, the splicing sheet can be placed at the front side of the middle frame 10 to be matched with the front assembly region 100 a; alternatively, the splice may be placed on the rear side of the middle frame 10 to mate with the post-assembly area 100 b; in even still other examples, both the front assembled region 100a and the rear assembled region 100b of the center frame 10 may be provided with splicing tabs. However, in general, only one side of the splice assembly area 100 needs to be engaged by the splice.

Referring to fig. 1 to 3, it can be understood that, when the front assembling area 100a is used to mate with the splice plate 20, the splice plate 20 is located at the front side of the middle frame 10, which is suitable for the situation that an installer performs splice installation from the front side of the middle frame 10, in which case one end of a threaded fastener can sequentially pass through the splice through hole 201 from the front side of the middle frame 10 and be fastened to the splice screw hole 101 through a threaded connection (refer to fig. 1 and 4); when the assembled rear area 100b is used to mate with the splice plate 20, the splice plate 20 is located at the rear side of the middle frame 10, which is suitable for the situation where the installer performs the splicing installation from the rear side of the middle frame 10, in which case one end of the threaded fastener 30 may be sequentially passed through the splicing through-hole 201 from the rear side of the middle frame 10 and the splicing screw hole 101 is fixedly connected by the threaded connection (refer to fig. 3 and 6-1, 6-2).

With continued reference to fig. 1, in some examples of the present embodiment, the assembly front area 100a is at least partially recessed, such that when the splice plate 20 is engaged therewith, a portion of the splice plate 20 is embedded into the assembly front area 100a, such that the overall thickness of the splice plate after being engaged with the middle frame 10 can be reduced, and the problem that the installation of the display module on the front side of the middle frame 10 is affected due to the outward protrusion of the splice plate on the front side of the middle frame 10 is avoided. In some examples of the present embodiment, the recessed depth of the front assembly area 100a is greater than or equal to the thickness of the splicing sheet 20, so that it is ensured that the splicing sheet does not protrude to the front side of the center frame 10. It should be understood that, in any event, the splice sheet 20 is not completely embedded in one of the middle frames 10 because one splice sheet is engaged with at least two of the middle frames 10 at the same time, so that it is embedded in each of the middle frames 10 only in a portion thereof and always exposed to the middle frame 10. However, the splicing piece 20 can be completely embedded in the inner frame 10 in terms of the thickness direction thereof.

With continued reference to fig. 1-3, in some examples of the present embodiment, the assembly connecting area 100 of the middle frame 10 is provided with a positioning pin hole 102, and the positioning pin hole 102 is used to cooperate with a positioning pin 202 on the splice sheet 20. It can be understood that the hole-pin fitting is simple, does not require tools, and is easy to implement, when the splicing sheet 20 is fitted to the splicing sheet fitting area 100 on the middle frame 10, the positioning pin hole 102 and the positioning pin 202 have already completed the hole-pin fitting, that is, the positioning pin has been inserted into the positioning pin hole, at this time, the threaded fastener 30 has not yet completed the fitting with the splicing screw hole 101 and the splicing through hole 201, so that the preliminary fixing or "pre-fixing" of the splicing sheet 20 on the fitting connection area 100 can be achieved through the hole-pin fitting before the middle frame 10 and the splicing sheet 20 are formally locked. After the hole-pin fitting is achieved, the fitting through-hole 201 and the fitting screw hole 101 are aligned, which also provides a convenient condition for the fitting of the threaded fastener 30 with the fitting piece 20 and the center frame 10. In the present embodiment, the fitting accuracy of the hole-pin fitting is higher than that of the thread fitting, for example, in the present embodiment, the clearance between the dowel hole 102 and the dowel pin 20 is 0.15mm, and the fitting clearance between the threaded fastener 30 and the splicing screw hole 101 is 0.5 mm. Since the threaded fastener 30 and the splice screw hole 101 function to lock the splice plate 20 and the middle frame from the axial direction of the threaded fastener 30, the fitting accuracy can be lower than that between the dowel hole 102 and the dowel pin 20, so that the threaded fastener 30 can be more easily screwed into the splice screw hole 101 at the time of assembly, facilitating quick installation.

In some examples of the embodiment, the body and the positioning pin 202 of the splice 20 may be integrally formed, for example, integrally formed by die casting, and it is understood that the quality of the splice 20 may be significantly enhanced by forming the splice 20 through an integrally forming process, for example, in one example, the positioning pin 202 is integrally formed with the body, and the diameter of the positioning pin 202 reaches more than 8mm, which may ensure that the body and the positioning pin 202 bear more than 500 kg of pressure.

It should be understood that the dowel holes 102 disposed in the splice piece assembling region 100 may be blind holes or through holes, and if the dowel holes are blind holes, the dowel holes 102 corresponding to the front assembling region 100a and the rear assembling region 100b are necessarily independent from each other; if the dowel holes 102 are through holes, the dowel holes 102 of the front assembly area 100a and the back assembly area 100b may be identical. In some examples of the present embodiment, in order to reduce the number of openings in the splice sheet mounting region 100 and maintain the load-bearing capacity of the splice sheet mounting region 100, the front mounting region 100a and the rear mounting region 100b may share one dowel hole 102, in which case, one end of the dowel hole 102 facing the front side of the middle frame 10 is used for inserting the dowel 202 from the front side of the middle frame 10, and the other end is used for inserting the dowel 202 from the rear side of the middle frame 10.

With continued reference to fig. 2, in some examples of the present embodiment, a corner protrusion 103 is disposed between the front assembly area 100a and the rectangular vertex corresponding to the corner area, correspondingly, a limiting groove 203 for the protrusion to pass through is disposed in the splice piece 20 engaged with the front assembly area 100, the limiting groove 203 penetrates through the splice piece 20, and the corner protrusion 103 will pass through the limiting groove 203 on the splice piece 20 when the splice piece 20 is engaged with the front assembly area 100a, as shown in fig. 4. For example, in fig. 4, when the splicing sheet 20 is inserted into the front assembling area 100a, the top corner protrusions 103 will extend into the limiting grooves 203, so that the splicing sheet 20 can be sleeved on the top corner protrusions 203 of the four middle frames 10, thereby realizing pre-fixing between the adjacent middle frames 10 in the direction parallel to the display surface, and thus ensuring that at least the four middle frames 10 are not separated from each other in the direction parallel to the display surface.

In addition, because the display module needs to be installed on the front side of the middle frame 10, under the condition that the front assembly area 100a is recessed towards the rear side of the middle frame, the vertex angle protrusion 103 is arranged between the front assembly area 100a and the rectangular vertex corresponding to the vertex angle area where the front assembly area is located, the problem that the corner area of the display module installed on the front side of the middle frame 10 cannot be supported by the middle frame 10 due to the fact that the whole vertex angle area of the middle frame 10 is in the recessed state can be avoided, the supporting capability of the middle frame 10 on the display module on the front side can be improved by arranging the vertex angle protrusion 103, and the flatness of the display surface of the display device or the spliced display screen formed based on the middle frame 10 is improved.

It should be noted that, although the splice plate 20 shown in fig. 2 has the limiting groove 203 located in the middle of the splice plate 20 and surrounded by the body of the splice plate 20, in some other examples of the present embodiment, the splice plate 20 may have other structures, for example, in another schematic diagram of the splice plate 20 shown in fig. 5 and the threaded fastener 30, the body of the splice plate 20 does not form a closed loop, and the limiting groove 203 is not completely surrounded by the body of the splice plate 20. It is understood that the splice sheet 20 shown in fig. 2 is used to splice four middle frames 10, and the splice sheet 20 shown in fig. 5 is used to splice two middle frames 10. In the entire tiled display screen, the tile shown in fig. 2 is located in the inner region of the tiled display screen, while the tile 20 shown in fig. 5 is located in the outer region of the tiled display screen.

With continued reference to fig. 2 and fig. 5, in some examples of the present embodiment, the plane where the splice sheet 20 contacts the splice sheet mounting area 100 is an end surface of a boss 204 formed on the splice sheet 20, the number of the bosses 204 is at least two, the end surface of each boss 204 is located on the same plane, and the plane where the end surface of the boss 204 contacts on the same middle frame is also located on the same plane. Under the condition that different middle frames 10 are respectively tightly attached to the end faces of the corresponding bosses 204 on the splicing sheet 20, the middle frames 10 can be ensured to be positioned on the same plane. The end face of the boss 204 is a smooth plane, and correspondingly, the surface of the middle frame in contact connection with the boss 204 is also a smooth plane. The splice through-hole is provided on the boss 204. In addition to the end surface of the boss 204 being a smooth plane, other surfaces of the splice sheet 20 may be relatively rough surfaces to reduce manufacturing costs, and correspondingly, other surfaces of the middle frame 10 may be relatively rough surfaces to reduce manufacturing costs, in addition to the surface of the boss 204. In the present embodiment, as shown in fig. 3, each of the post-assembly areas 100b on the rear side of the middle frame is provided with a boss 106 corresponding to the boss 204 of the splice sheet 20, and each of the bosses 106 is located on the same plane and is also a smooth plane. And each boss 106 protrudes from the rear side of the middle frame 10, which is convenient for polishing processing to ensure that each boss 106 is located on the same plane. The bosses 204 are matched with the bosses 106 on the back surfaces of different middle frames, so that the flatness of the spliced middle frames can be ensured. It should be understood that each of the assembled rear regions 100a of the front side of the center frame may also be provided with a boss similar to the boss 106.

In order to fix the spliced display screen formed by splicing the middle frame 10 on a mounting carrier such as a mounting bracket or a wall, the middle frame 10 needs to be fixed on the mounting carrier, and it can be understood that there are two ways to fix the middle frame 10 on the mounting carrier: the fixing of the middle frame 10 to the outside is realized by directly acting on the middle frame 10 through external fixing parts, and the connection and fixation of the middle frame 10 and the installation carrier are indirectly realized by using the splicing sheets 20 through acting on the splicing sheets fixed with the middle frame 10 through the external fixing parts. In the former approach, fixing holes are generally formed in the middle frame 10, and in the latter approach, fixing holes are formed in the splice sheet 20:

with continuing reference to fig. 1-6-2, in some examples of the present embodiment, the installer chooses to assemble and splice the middle frame 10 from the front side of the middle frame 10 to form a spliced display screen, and the installation mode may be referred to as "front installation". In this case, an installer may first install the display module on the front side of the middle frame 10, but first install the splicing sheet 20 on the front side of the middle frame 10, and complete the locking of the splicing sheet 20 and the middle frame 10 through the threaded fastener 30, so as to realize the splicing between the middle frames 10; on the other hand, the installer can use the second sub-connecting piece 64 (refer to fig. 6-2) and the second external fixing member 61 to install the middle frame 10 on the installation bracket (i.e., the installation carrier): the middle frame 10 to be fixed is placed on the front side of the mounting support, the second auxiliary connecting piece 64 is placed on the rear side of the mounting support, then one end of the second external fixing piece 61 extends into an external fixing hole 104 arranged in the vertex angle area of the middle frame 10 from the front side of the middle frame 10, one end of the second external fixing piece passes through the external fixing hole 104 (refer to fig. 4) and then extends into a second connecting hole in the second auxiliary connecting piece 64, wherein the external fixing hole 104 is a through hole (without threads), the second connecting hole is a threaded hole or a through hole, the second external fixing piece 61 is a threaded fastener such as a bolt, the second external fixing piece 61 is fixed through threaded connection of the second connecting hole or is fixed through connection of a nut and the second connecting hole, so that the mounting support and the middle frame 10 are fixed, and after locking is completed, the middle frame 10 and the second auxiliary connecting piece 64 clamp the mounting support in the middle. After the middle frame 10 is fixed, the installer can install the display module from the front side of the middle frame 10, so that the spliced display screen fixed on the mounting bracket is obtained. In another example, the mounting carrier may be replaced by a wall having a load-bearing capacity from the mounting bracket, in which case, the external fixing hole 104 of the middle frame 10 may be matched with a third fixing member, which may be a threaded fastener such as a self-tapping screw or an expansion screw, and one end of the third fixing member penetrates into the wall after passing through the external fixing hole 104 of the middle frame 10, so as to fix the middle frame 10 to the wall.

In some examples of the present embodiment, the external fixing holes 104 are located in the same vertex angle region as the splice assembly region 100, and in some examples, they may be distributed in different vertex angle regions. In some examples, the four vertex angle regions of the middle frame 10 are provided with the splicing piece assembling regions 100 and the external fixing holes 104, and in this case, no matter whether the middle frame 10 is spliced or the middle frame 10 is installed on an external wall or a bracket, the arrangement positions of the middle frame 10 do not need to be distinguished, so that the operation efficiency of an installer is improved, and the operation burden is reduced.

In other examples of the present embodiment, an installer selects to assemble and splice the middle frame 10 from the rear side of the middle frame 10 and form a spliced display screen, and this installation mode may be referred to as "rear installation". In this case, the middle frame 10 is no longer fixed on the mounting bracket by means of the external fixing hole 104, but by providing the connecting hole 205 with an internal thread on the splicing sheet 20, the splicing sheet 20 realizes splicing between the middle frames 10 on one hand, and is fixed with the external first secondary connecting piece 62 by the connecting hole 205 with an internal thread on the other hand, thereby realizing connection between the middle frame 10 and the first secondary connecting piece 62: referring to fig. 2 and 6-1, first, an installer can install the splicing piece 20 at the rear side of the middle frame 10 and complete the locking of the splicing piece 20 with the middle frame 10 by using the screw fastener. Then, one end of the first external fixing member 61 (which may be a threaded fastener) is passed through a first connection hole (which is a through hole, without threads) in the first sub-connection piece 62 from the rear side of the first sub-connection piece 62, and then is fastened to the connection hole 205 having the internal thread in the splice piece 20, thereby completing the connection and fixation of the splice piece 20 to the first sub-connection piece 62. In fig. 6-1, the splice sheet 20 and the first secondary connecting sheet 62 are located at the front and rear sides of the mounting bracket 63, respectively. In the rear mounting mode, the middle frame 10 does not need to be connected with the first auxiliary connecting piece 62, and a hole connected with the first auxiliary connecting piece 62 does not need to be additionally arranged on the middle frame 10, so that the structure of the middle frame 10 can be simplified.

The present embodiment also provides a splice assembly including the splice plate 20 provided in any of the preceding examples, and further including a threaded fastener, a first secondary connecting piece 62 and a second secondary connecting piece 64. The splicing sheet 20 is used for splicing a plurality of (usually two or 4) middle frames 10. The first and second

sub-connecting pieces

62 and 64 can be used to fix the spliced middle frame (or spliced display screen formed after splicing) to a mounting carrier. It can be understood that, when the spliced middle frame is fixed on a mounting carrier such as a mounting bracket, any one of the first sub-connecting piece and the second sub-connecting piece may be selected. For example, a first secondary connection is used if the "rear mounting" mode is selected, and a second secondary connection is used if the "front mounting" mode is selected. In the "rear mounting" mode, the first secondary connecting piece is matched with the splicing piece through a threaded fastener, and specifically, the threaded fastener passes through the connecting hole on the splicing piece after passing through the first secondary connecting piece. In the "front mounting" mode, the second secondary connecting piece is engaged with the middle frame, and specifically, the threaded fastener passes through the second secondary connecting piece after passing through the external fixing hole on the middle frame from the front side of the middle frame.

The splicing sheet provided by the embodiment supports splicing of the middle frame from the front side and the rear side, can be matched with the positioning pin hole of the middle frame through the positioning pin, and the end face of the boss of the splicing sheet is located on the same plane and tightly attached to the middle frame, so that splicing seams are reduced, and splicing flatness is improved; meanwhile, the middle frame supports front-side splicing and rear-side splicing, so that the installation and operation are simple, and the adaptive scene is wide.

Another alternative embodiment of the present application:

referring to fig. 7 and 8, the tiled display screen 7 includes a tiled sheet 20, at least two threaded fasteners 30, and at least two middle frames 10. The middle frames 10 are fixed to the splicing pieces 20 by the screw fasteners 30, so that different middle frames 10 can be spliced together by using the splicing pieces 20 as "bridges". In a tiled display screen 7, two or more tiles 20 with different structures may be included, for example, in fig. 7, some of the tiles 20 in the tiled display screen 7 may be used to tile four middle frames 10, and other tiles 20 may be used to tile only two middle frames, it is understood that one tile 20 corresponds to at least two middle frames 10, and one middle frame may correspond to at least two tiles 20.

A plurality of display modules 40 are further included in the tiled display screen 7, and the display modules 40 are installed on the front side of the middle frame 10, as shown in FIG. 8. In some examples of the present embodiment, the display module 40 may be detachably fixed on the middle frame 10 by magnetic attraction, clamping, screwing, or even adhering. For example, referring to fig. 9, in some examples, a first magnetic attraction element 411 is disposed on the display module 40, a second magnetic attraction element 111 is disposed on the front side of the middle frame 10, and the first magnetic attraction element 411 and the second magnetic attraction element 111 are opposite to each other in a state that the display module 40 is assembled to the middle frame 10, and are attracted to each other. It is understood that one of the first magnetic element 411 and the second magnetic element 111 can be a magnet, the other can include a metal (e.g., iron, cobalt, nickel) with a ferromagnetic material, or both can be a magnet.

In some examples of the embodiment, the second magnetic attraction piece 111 includes a connecting rod, please refer to fig. 10, functionally, the second magnetic attraction piece 111 has a magnetic attraction front end 111a and a fixed rear end 111b, and the magnetic attraction front end 111a and the fixed rear end 111b are respectively located at two ends of the connecting rod 1111, please refer to fig. 11, a magnetic attraction piece fixing hole 1110 is disposed on the middle frame 10, the fixed rear end 111b extends into the magnetic attraction piece fixing hole 1110, and the magnetic attraction front end 111a is exposed at the front side of the outer frame 10 for cooperating with the first magnetic attraction piece on the display module. The height that exposes connecting rod 1111 in the bezel 10 front side is called here and exposes the height, expose height-adjustable in this embodiment, it is also adjustable apart from bezel 10 that the magnetic attraction front end 111a is inhaled on connecting rod 1111, this just makes and inhales the distance adjustable of the display module assembly 40 and the bezel 10 that the front end is connected, through this kind of setting, can guarantee to form the concatenation display screen with bezel 10 after, each display module assembly 40 can be adjusted with the distance of bezel 10 in a flexible way on the concatenation display screen, thereby can guarantee that the display surface of each display module assembly is in the coplanar, promote the whole display effect of concatenation display screen.

In this embodiment, the magnetically attracting front end 111a is provided with a front operating portion configured to cooperate with an external tool (including a screwdriver, a sleeve, etc.) to receive the external tool to adjust the exposed height of the connecting rod 1111 from the front side of the center frame 10. Therefore, if the distance between a certain display module and the middle frame 10 needs to be adjusted, the installer can first detach the display module 40, then operate the front operation part by using an external tool, and then install the display module 40 back on the middle frame 10 after the adjustment is finished. In some examples of the embodiment, the fixed rear end 111b is at least partially exposed at the rear side of the outer frame 10, and the fixed rear end 111b is also provided with an operation portion for adjusting the exposed height of the connection rod 1111, which corresponds to the front operation portion and is called a "rear operation portion", it should be understood that if an installer wants to adjust the exposed height of the connection rod 1111 by using the rear operation portion, the installer needs to operate from the rear side of the middle frame 10, in this case, the installer can choose not to detach the display module 40 but directly adjust the display module 40, which also facilitates the installer to determine the difference between the display surface of the display module 40 and the display surface of the other display module 40 in real time. Because the exposed height of the connecting rod 1111 in the second magnetic attraction piece 111 supports the adjustment from the front side of the middle frame 10 and also supports the adjustment from the rear side of the middle frame 10, an installer can flexibly select an adjustment mode according to an application scene to improve the flatness of the display surface.

In some examples of this embodiment, the connection rod 1111 is screwed into the magnetic-attracting member fixing hole 1110, an external thread is provided on the surface of the connection rod 1111, and an internal thread is provided on the inner wall of the magnetic-attracting member fixing hole 1110, and the threads of the connection rod 1111 and the internal thread are matched, so that the connection rod 1111 can move along the axial direction of the magnetic-attracting member fixing hole 1110 by rotating. In some examples of the present embodiment, the front operating part may be a concave pattern disposed at the magnetic attracting front end 111a, and/or the rear operating part may be a concave pattern disposed at the fixing front end 111b, the concave pattern includes, but is not limited to, a quasi-one pattern, a quasi-cross pattern, or a non-circular pattern such as a quasi-x-shape, a pentagonal pattern, a hexagonal pattern, etc., and correspondingly, the external tool should have an end portion capable of being inserted into and adapted to the concave pattern, for example, the external tool may be a screwdriver (also called a screwdriver). In other examples of this embodiment, the front operating part may be a non-circular contour of the end surface of the magnetic front end 111a, and/or the rear operating part may be a non-circular contour of the end surface of the fixed rear end 111b, wherein the non-circular contour refers to a non-circular shape such as triangle, rectangle, parallelogram, regular hexagon, regular octagon, etc., and correspondingly, the external tool should have a concave hole with a shape and size capable of matching with such end surface, for example, the external tool may be a sleeve.

In some examples of this embodiment, the second magnetic element 111 can have a magnetic disc in addition to the connecting rod 1111, please refer to fig. 12, the magnetic disc 1112 is fixed at an end of the connecting rod 1111 near the front end 111a, and can attract the first magnetic element, so that, in this case, the front end 111a is actually the end where the magnetic disc 1112 is located, the magnetic function of the front end 111a is realized by the magnetic disc 1112, in some examples of this embodiment, the magnetic disc 1112 can be a magnet, the outer profile area of the magnetic disc 1112 is larger than the end surface area of the connecting rod 1111 near the front end 111a, so that through the magnetic cooperation of the magnetic disc 1112 and the first magnetic element, the area of the second magnetic element 111 relative to the first magnetic element can be increased compared to the case of directly magnetically cooperating the front end 111a of the connecting rod 1111 and the first magnetic element, the mutual attraction between the two is improved, and the reliability of fixing the display module on the middle frame is enhanced.

In some examples of this embodiment, the end surface of the magnetic attraction disc 1112 far from the connection rod 1111 may be provided with a concave pattern to form a front operation portion, including but not limited to a "one" like pattern, which is convenient for an installer to use an assembly and disassembly tool such as a screwdriver to rotate the magnetic attraction disc 1112, so that the magnetic attraction disc 1112 rotates to drive the connection rod 1111 to move along the axis of the connection rod 1111. In other examples of this embodiment, the outer contour of the magnetic attraction disc 1112 may be a shape other than a circle such as a regular hexagon, which facilitates the installer to adjust the distance between the magnetic attraction disc 1112 and the surface of the middle frame 10 by using an external tool such as a sleeve. In an example of this embodiment, the second attracting element 111 has a attracting front end provided with a magnetic attracting disc with a regular hexagonal outer contour to form a front operating portion, and a fixed rear end surface provided with a recess pattern for operating the screwdriver, which forms a rear operating portion, as shown in fig. 12. In another example, magnetic attraction discs 1112 with non-circular outer contours are disposed at both ends of the connecting rod 1111 of the second magnetic attraction piece 111, and a concave pattern is further disposed on an end surface of the magnetic attraction discs 1112 far away from the connecting rod 1111.

In some examples of the present embodiment, the display module may be in hole-pin fit with the middle frame, for example, please refer to fig. 9 and 13, the second hole-pin connector 112 is disposed on the front side of the middle frame 10, and the first hole-pin connector 412 is disposed on the rear side of the display module 40, in the corresponding example of fig. 9, the second hole-pin connector 112 may be a pin, and the first pin-hole connector 412 may be a pin hole, it is understood that in other examples of the present embodiment, the specific implementation manners of the first pin-hole connector 412 and the second hole-pin connector 112 may be interchanged. However, as shown in fig. 9, the pins are disposed on the middle frame 10, and only the pin holes are disposed on the display module 40, so that the flatness of the surface of the display module 40 can be ensured, and the display module 40 can be conveniently packaged and transported.

In some examples of this embodiment, please refer to fig. 13, the back of the display module 40 is further provided with a fixing ring 413, and a fixing rope cooperating with the fixing ring 413 can be tied to the fixing ring 413 on one hand and tied to the middle frame on the other hand, so that even if the environment where the tiled display screen is located has severe disasters such as earthquake, hurricane and the like, the display module 40 cannot easily fall off from the middle frame, thereby avoiding the damage of the display module 40 due to falling, further avoiding the situation that the display module 40 falls to hurt people, and protecting property and personal safety.

Each display module assembly 40 can set up on the center through the mode of magnetism to the tiled display screen that this embodiment provided, and the dismouting of being convenient for has reduced tiled display screen's dismouting burden, is favorable to promoting tiled display screen's installation effectiveness. Simultaneously because the exposure height-adjustable of connecting rod in the piece is inhaled with display module assembly complex second magnetism on the center, consequently can guarantee that each display module assembly's display surface is in the coplanar after the center concatenation is accomplished, promote display effect. Moreover, in this embodiment, the second magnetism is inhaled the height that exposes of connecting rod among the piece and is supported to adjust from the center front side, also supports to adjust from the center rear side, and the installer of being convenient for selects the adjustment mode according to the application scene flexibility of tiled display screen improves the roughness of display surface.

Yet another alternative embodiment of the present application:

it can be understood that even under the condition that the middle frames are not spliced, one middle frame and the corresponding display module can form one display device with a display function, so that the spliced display screen in the foregoing embodiment can also be regarded as being formed by splicing a plurality of display devices. In the present embodiment, description will be made from the level of a display device:

it is needless to say that the display device includes a middle frame and display modules, and one middle frame generally corresponds to two display modules, but the embodiment does not exclude the case where fewer or more display modules are installed on one middle frame. In some examples of this embodiment, the display device further comprises a back cover, please refer to an exploded schematic view of the display device 8 shown in fig. 14: the rear cover 50 is installed at the rear side of the middle frame 10, and is used for shielding a display support module (in this embodiment, a module for supporting the display of the display module as necessary includes, but is not limited to, at least one of a power supply and a signal adapter board) in the display device 8 and the back of the display module 40 from the rear side of the middle frame 10, so that on one hand, the aesthetic property of the display device 8 is improved, and on the other hand, the effects of moisture protection, dust protection and the like can also be achieved.

In some examples of the present embodiment, the rear cover 50 may be fixed to the middle frame 10 by screwing, clipping, or even bonding. In other examples of the present embodiment, the rear cover 50 can also be magnetically attached to the middle frame 10 as the display module 40. For example, referring to fig. 15, a fourth magnetic element 114 is disposed on the middle frame 10, and a third magnetic element 511 cooperating with the fourth magnetic element 114 is disposed on the rear cover 50. The third magnetic element 511 and the fourth magnetic element 114 are opposite to each other in position in a state where the rear cover 50 is assembled to the middle frame 10, and attract each other. It is understood that one of the third magnetic element 511 and the fourth magnetic element 114 can be a magnet, the other can comprise a metal with a ferromagnetic material, or both can be a magnet.

In some examples of the present embodiment, the mounting of the rear cover 50 on the middle frame 10 does not affect the rear-fitting region 100b on the rear side of the middle frame 10: there is a rear cover shielding region on the middle frame 10, which refers to the region of the middle frame 10 that is shielded by the rear cover after the rear cover 50 is mounted on the middle frame 10, and in this embodiment, the rear cover shielding region does not overlap with the splicing piece mounting region on the middle frame. For example, in the example corresponding to fig. 6-1 or fig. 15, the rear cover 50 may be embedded in the middle frame 10 and cover the area enclosed by the edge beam of the middle frame 10, and it is understood that the rear cover 50 is not disposed to block the post-assembly area 100b, so that if a splicing piece is disposed on the post-assembly area 100b to realize splicing of the middle frame 10 (or the display device 8), the splicing piece will not interfere with the installation of the rear cover 50 on the middle frame 10.

In some examples of the present embodiment, one side of the rear cover 50 is provided with a protruding tongue piece, for example, in fig. 15, the tongue piece 512 is provided on the bottom edge of the rear cover 50, a tongue groove 1151 for accommodating the tongue piece 512 is provided on the side beam corresponding to the middle frame 10, that is, the bottom side beam, the tongue groove 1151 extends away from the rear cover 50, a shielding portion 1152 is provided on a portion of the tongue groove 1151 above the notch, the shielding portion 1152 protrudes from the side beam to provide a receiving space above the tongue groove 1151, the receiving space is used for inserting the tongue piece 512 below the shielding portion 1152 in a direction parallel to the notch, and a portion of the notch not covered by the shielding portion 1152 is used for inserting the tongue piece 512 into the tongue groove 1151. The latch piece 512 may extend into the receiving space in a direction substantially parallel to the notch of the latch groove 1151, and the inner space of the latch groove 1151 may allow the latch piece 512 to rotate along with the rear cover 50 from a state parallel to the notch to a state perpendicular to the notch, that is, the inner space of the latch groove 1151 may allow the rear cover 50 to drive the latch piece 512 to rotate from a direction perpendicular to the display surface of the display device to a direction parallel to the display surface.

In the case that the rear cover 50 is assembled to the middle frame 10 through the third magnetic attraction piece 511 and the tongue locking piece 512, the rear cover 50 can be disassembled from the rear side of the middle frame 10, the disassembling operation is simple and easy to achieve, and moreover, the rear cover 50 does not need to be provided with a screw hole matched with the middle frame 10, and the like, which is beneficial to improving the processing efficiency of the rear cover 50 and the integrity of the rear cover 50. Meanwhile, when the rear cover 50 is installed, the rear cover 50 can be placed perpendicular to the display surface, and the tongue clamping piece 512 is inserted into the tongue clamping groove 1151, so that the rear cover 50 can be quickly positioned on the middle frame 10; afterwards, the rear cover 50 is rotated to the position parallel to the display surface, so that the third magnetic attraction piece 511 on the rear cover 50 is accurately attracted to the fourth magnetic attraction piece on the middle frame 10, the quick installation of the rear cover is realized, the process of aligning the third magnetic attraction piece 511 with the fourth magnetic attraction piece manually when the rear cover 50 is installed is avoided, and the installation efficiency of the rear cover 50 is improved. On the other hand, after the tongue piece 512 is inserted into the tongue groove 1151, the boundary beam of the middle frame 10, the tongue groove 1151 and the shielding portion 1152 can also support and limit the rear cover 10 to a certain extent, which improves the reliability of the connection between the rear cover 50 and the middle frame 10.

In some examples of the present embodiment, the middle frame 10 is provided with a hollow area 113 having a size that the display module 40 can pass through, for example, if the hollow area 113 is a rectangle, at least a diagonal dimension of the rectangle is greater than a short side dimension of the display surface of the display module 40, in some examples of the present embodiment, in a case that the hollow area 113 is a rectangle, a long side dimension of the hollow area 113 is also greater than a short side dimension of the display surface of the display module 40. However, as will be understood by those skilled in the art, since the top corner region of the middle frame 10 is provided with the splicing fitting region, the hollow region 113 is not a standard rectangle, but in this case, the length of the connecting line between at least two points on the contour of the hollow region 113 is greater than the dimension of the short side of the display surface of the display module 40. Since the size of the hollow area 113 allows the display module 40 to pass through the front and rear sides of the middle frame 10, after the display module 40 on the front side of the middle frame 10 is detached, the display module 40 can pass through the hollow area 113 to reach the rear side of the middle frame 10.

In some examples of the present embodiment, the middle frame 10 is surrounded by only four edge beams to form a hollow area 113, however, in other examples of the present embodiment, the middle frame 10 further includes at least one middle beam in addition to the four edge beams, please continue to refer to fig. 1, the four edge beams 11 are connected end to end, and the vertical projection profile of the four edge beams 11 on the display surface is substantially rectangular. The two ends of a middle beam 12 are connected to two opposite side beams 11, so that the middle beam 12 divides the area enclosed by the side beams 11 into two hollow areas 113. If more than one middle beam is arranged in the middle frame, more than two hollow areas can be divided. In some examples of the present embodiment, the middle beams are arranged parallel to each other, and in other examples, there may also be portions of the middle beams that are perpendicular to each other, for example, in an example, two middle beams that are perpendicular to each other are included in the middle frame, in this case, there are four hollow areas in the middle frame, and the whole middle frame may be in a shape similar to a "tian".

In this embodiment, the display module is supported to be attached to and detached from the front side of the middle frame, and is also supported to be attached to and detached from the rear side of the middle frame. Taking the disassembly of the display module as an example, please refer to fig. 14 and 15, when the display module 40 is installed on the middle frame 10 in a magnetic manner, an installer can directly suck down the display module from the front side by using tools such as a sucker; or the installer removes the rear cover 50 from the rear side of the middle frame 10, and then applies a pushing force to the display module 40 from the rear side of the middle frame 10, so that the display module 40 is separated from the middle frame 10, but at the same time the display module 40 is not separated from the control of the installer (for example, the display module 40 is still held in the hand of the installer or still connected to a mounting and dismounting tool controlled by the installer), and then the installer positioned at the rear side of the middle frame 10 can pass through the hollow area 113 on the middle frame 10 by rotating the orientation of the display module 40 and moving the display module 40, so as to achieve the effect of completing the detachment from the rear side of the middle frame 10.

In some examples of the present embodiment, in order to facilitate detaching the display module 40 from the rear side of the middle frame 10, a module holding portion may be disposed on the rear side of the display module 40, please refer to a schematic structural diagram of the display module 40 shown in fig. 13 and 16: the rear side of display module assembly 40 is provided with the handle as module and holds portion 414, and installer can operate through holding this module and holding portion 414 when the rear side dismouting display module assembly 40 from the frame, and the installer's of being convenient for operation like this has promoted the security of display module assembly 40 at the in-process of dismantling or installing compared in the condition that does not set up module and holds portion 414.

In some examples of the present embodiment, please refer to fig. 16, a display support module 60 in the display device is mounted on the middle frame 10 and is located at the rear side of the middle frame 10. In some examples of the present embodiment, the display support module 60 is mounted on the side sill of the middle frame 10, and in still other examples, the display support module 60 is mounted on the middle sill of the middle frame 10. In some examples of the present embodiment, the display support module 60 also supports both attachment and detachment from the front side of the middle frame 10 and attachment and detachment from the rear side of the middle frame 10. Therefore, in some examples of the present embodiment, the display support module 60 is fixed on the middle frame 10 using a double operation end fixing member. As the name implies, the dual operation end fixing member has two operation ends respectively located at the front and rear sides of the middle frame 10, and both operation ends support the display support module 60 to be disassembled and assembled, for example, in some examples, the dual operation end fixing member may be a stud having a concave pattern on both end surfaces, in other examples, the dual operation end fixing member may be a stud, and in still other examples, the dual operation end fixing member for fixing the display support module 60 may be a stud pin.

The following is a simple description of the rest of the structure of the display module: referring to fig. 17, the display module 40 includes a lamp panel 401 and a bottom case 402, and the lamp panel 401 has a chip array formed by a plurality of light emitting chips, such as at least one of an LED array, a Micro-LED array, a Mini-LED array, and an OLED array. The lamp panel 401 is fixed to the front side of the bottom housing 402, and when the display module assembly 40 is mounted on the middle frame, the rear side of the bottom housing 402 faces the rear side of the middle frame.

It should be understood that the operation of the display module 40 requires current driving and also needs to receive a display control signal, so that it needs to be electrically connected and signal connected with the display support module 60 disposed on the middle frame, and therefore, a power interface corresponding to a power supply and a signal interface corresponding to a signal adapter board are disposed on the display module 40. For the display module 40, these interfaces all belong to the external interfaces of the display module 40, and are used for connecting with the module interface on the middle frame. In some examples of the present embodiment, the display module 40 further includes a distributing board 403, for example, as shown in fig. 17, the distributing board 403 is disposed at a rear side of the bottom case 402, that is, a side of the bottom case 402 opposite to the lamp panel 40. The external interfaces of the display module 40 are disposed on the distributing board 403, in some examples of the present embodiment, only one set of external interfaces is disposed on the distributing board 403, and the set of external interfaces includes various interfaces that need external connection for the display module 40 to work. The set of external interfaces may be disposed in the middle region of the distribution board 403, or may be disposed in a region on one side of the distribution board 403, such as the left side or the right side, and such as the upper side or the lower side. In general, a middle frame is divided into a left area and a right area by a middle beam, and the two areas are respectively provided with a display module 40; meanwhile, the display support module is usually located in the middle of the middle frame, for example, on the center sill, so if one display module 40 is disposed on the left side of the middle frame, its external interface is preferably located on the right side of the line distribution board (when describing the position of the external interface on the line distribution board 403 in this embodiment, the left and right sides are distinguished with reference to the direction facing the display surface of the display module 40), and if the display module 40 is disposed on the right side of the middle frame, its external interface is preferably located on the left side of the line distribution board. Therefore, in some examples of the present embodiment, the display module 40 mounted on one middle frame is divided into two types, in which case, when the installer mounts the display module on the middle frame, the installation position of the display module on the middle frame also needs to be distinguished on site according to the position of the external interface on the display module. However, in some other examples of the present embodiment, the distribution board includes two sets of external interfaces, for example, see fig. 13: in the display module 40 shown in fig. 13, the external interface 4030 is provided on both the left side and the right side of the distributing board 403, and the external interface 4030 is a left-side interface and a right-side interface, so that the display module 40 is supported to be installed on both the left side and the right side of the middle frame, and an installer does not need to distinguish the installation position of the display module 40 during field installation, thereby enhancing the universality of the display module 40 and improving the installation efficiency of the display module 40.

Some examples of the present invention provide a display device, in which at least one of the power supply and the signal adapter board in the display support module is dual-backed up, for example, in an example, a display device simultaneously includes a main power supply and at least one standby power supply, a main signal adapter board and at least one standby signal adapter board. Therefore, the situation that the display equipment cannot work due to the failure of the display support module can be avoided, and the reliability of the display equipment is improved. It can be understood that, in the case that there is a backup of the display support modules in the display process, if a certain display support module fails, the display device may switch the display support module corresponding to the backup to continue to operate, so that the display device continues to display. Under this condition, the installer can maintain the display support module of trouble from the rear side of display device, and maintenance work neither can influence meeting place order and meeting place image like this, also can not influence going on of meeting, is favorable to promoting user experience.

With reference to fig. 17 and fig. 13, since a large number of light emitting chips are disposed on the front side of the lamp panel 401, and a large number of driving chips are disposed on the rear side of the lamp panel 401, when the lamp panel 401 is driven by current, a large amount of heat will be generated, and heat dissipation needs to be considered in order to avoid that the high heat environment affects the performance of the light emitting chips and the driving chips. In some examples of the embodiment, a heat conducting material is disposed between the lamp panel 401 and the bottom housing 402, and the heat on the lamp panel 401 can be guided to one side of the bottom housing 402 by using the heat conducting material and dissipated from the bottom housing 402. In some examples, a plurality of heat dissipation fins 4020 are arranged on the surface of the bottom case 402 away from the lamp panel 401, and the surface area of the bottom case 402 is increased by the heat dissipation fins 4020, which is beneficial to improving the heat dissipation efficiency of the bottom case 402.

In order to ensure the heat dissipation efficiency of the bottom case 402, in this embodiment, the surface of the distributing board 403 disposed on the side of the bottom case 402 away from the lamp panel 401 is usually smaller, so as to prevent the distributing board 402 from shielding the heat dissipation fins 4020. In addition, in order to ensure that the module holding portion 414 disposed on the bottom case 402 can be exposed to the wire distributing plate 403, in this embodiment, the middle portion of the wire distributing plate 403 is hollowed out, and the module holding portion 414 can penetrate through the middle portion to be hollowed out and extend out of the wire distributing plate 403.

Among the display device that this embodiment provided, the display module assembly supports from the dismouting of the front and back both sides of center, the back lid supports from the dismouting of center side rear side, and simultaneously, it fixes on the center also to adopt the dual operation end fixing piece to show to support the module, so, show to support the module also and support from the front and back both sides of center and carry out the dismouting, this has made things convenient for each part of installer in to display device under different scenes to maintain, display device's maintenance flexibility and maintenance efficiency have been promoted, the maintenance work burden has been reduced. In addition, two sets of external interfaces can be arranged on the distributing board of the display module, so that the universality of the display module is enhanced, and the installation efficiency of the display module is improved. Simultaneously, because can set up the heat conduction material between lamp plate and drain pan in the display module assembly, also can set up the heat dissipation fin at the drain pan rear side, these set up and have strengthened the display module assembly to the outer heat-sinking capability, have promoted display module assembly's quality.

Yet another alternative embodiment of the present application:

continuing with the description of the display device in this embodiment, please refer to fig. 14, the display device 8 includes a middle frame 10, a display module 40 installed on one side of the middle frame 10, and a rear cover 50 installed on the other side of the middle frame 10.

In the embodiment, the middle frame 10 of the display device 8 mainly supports the load, and the display module 40 and the rear cover 50 may be responsible for almost no load, so that the middle frame 10 is usually used as the load-bearing body when the display device 8 needs to be carried. In some examples, a carrying handle is provided on the center frame 10 for facilitating the carrying operation. For example, please refer to a partial structure diagram of the middle frame shown in fig. 20: a carrying handle 105 is provided on the rear side of the middle frame 10, which is configured to be held by a person. In some examples, in order to allow the installer to pull the middle frame 10 while applying a force, the middle frame 10 may be kept as straight as possible, and the pull handle 105 may be provided at an upper portion of the rear side of the middle frame 105. In some examples of the present embodiment, the carrying handle 105 is provided in a region where the rear side of the middle frame 10 is covered by the rear cover 50, which can ensure the aesthetic appearance of the exterior of the display device 8. However, at the same time, it is necessary to break through the shielding of the carrying handle 105 by the rear cover 50 when the display device 8 is carried, and in some cases, it may be selected to detach the rear cover 50 before carrying the display device 8 and mount the rear cover on the middle frame 10 after carrying the display device to a destination, which causes an additional burden on carrying the display device 8 and increases the application cost of the display device 8.

In some examples of this embodiment, a handle window is selectively formed in a position of the rear cover 50 of the display device 8 corresponding to the lifting handle 105, so that an installer can be ensured to reach the lifting handle 105 on the middle frame 10 without removing the rear cover 50, but the formation of the handle window in the rear cover 50 may affect the integrity of the lifting handle 105, and reduce the protection capability of the rear cover 50 in terms of moisture and dust protection for the inside of the display device 8.

Referring to fig. 18 and 19, in some other examples of the present embodiment, the rear cover 50 includes a rear cover body 501 and a window stop 502, and a handle window 5010 is disposed on the rear cover body 501 opposite to the lift handle, so that the hand of the installer can pass through the handle window 5010 and then grip onto the lift handle. The handle window 5010 can be rectangular, trapezoidal, inverted trapezoidal, or the like. In fig. 18 and 19, the grip window 5010 has an inverted trapezoidal shape. The window shield 502 is movably connected to the rear cover body 501 through a connector, and the window shield 502 can shield the handle window 5010 in a first state and can expose at least a partial area of the handle window 5010 in a second state. With the display device having such a rear cover 50, when carrying is required, the rear cover 50 does not need to be detached, but the window shield 502 can be directly placed in the second state, so that a hand can be directly inserted from the outside to the inside of the display device to grip on the carrying handle. And when not carrying the demand, window shield 502 can shelter from the handle window again to protect the inside module of display device.

In some examples, the window stopper 502 may be connected to the back cover body 501 by clipping, magnetic attraction, or the like. In this embodiment, the window stopper 502 and the rear cover body 501 may be connected by a rotating connection, please refer to fig. 20, and fig. 20 is a partially enlarged schematic view of a region Q in fig. 19: the rotation connector 503 is located on a side of the rear cover 50 facing the display module, that is, the rotation connector 503 is located on an inner side of the rear cover 50. The rotating connection component 503 has a first connection end 5031, a second connection end 5032 and a rotation shaft 5033, the first connection end 5031 and the second connection end 5032 are both connected to the rotation shaft 5033, and the first connection end 5031 and the second connection end 5032 are respectively and fixedly connected to the window stopper 502 and the rear cover body 501. In this embodiment, the first connection end 5031 can rotate relative to the rotation shaft 5033, so that the window stopper 502 fixedly connected to the first connection end 5031 can rotate relative to the rotation shaft 5033. After the rear cover body 501 is installed at the rear side of the middle frame, if an installer needs to use the carrying handle, the installer can push the window stop 502 to enable the window stop 502 to rotate relative to the rear cover body 501, so that the window stop 502 can expose at least one part of the handle window 5010 on the rear cover body 501 shielded by the window stop; when there is no need for using the pull handle, the window stopper 502 can be returned to the state of being in the same plane as the rear cover body 501.

Needless to say, since one connection end of the rotary connector 503 is connected to the window stopper 502 and the other connection end is connected to the rear cover body 501, the rotation shaft 5033 of the rotary connector 503 should be arranged near the side of the handle window 5010, and the axial direction of the rotation shaft 5033 should run along the side where the rotation shaft 5033 is arranged, for example, in some examples of the present embodiment, the axial direction of the rotation shaft 5033 is parallel to the upper and lower sides of the handle window 5010; in still other examples, the axis of the spindle 5033 can be parallel to the left and right sides of the handle window 5010. In general, the upper and lower sides of the handle window 5010 are parallel to the upper and lower sides of the rear cover 50, and the lifting handle is also parallel to the upper and lower sides of the rear cover 50, so that a carrier can conveniently extend four fingers into the inner side of the rear cover 50 in a posture that the palm of the hand is upward, and smoothly hold the lifting handle, thereby realizing the lifting operation of the display device.

It should be understood that when the spindle 5033 is located at the upper side of the handle window 5010 and is disposed along the upper side of the handle window 5010, the window stopper 502 naturally blocks the handle window 5010 due to the influence of gravity in a natural state (a state where no external force is applied). In this case, when the installer needs to use the handle window 5010, the handle window 5010 can be opened by pushing the window stopper 502 into the center frame by stretching the hand, and when the installer takes out the handle, the window stopper 502 automatically returns due to the removal of the external force.

In other examples of this embodiment, the rotation connector 503 is a spring hinge, one of the two hinges of the spring hinge is used as the first connection end 5031, and the other is used as the second connection end 5032, and the spring hinge has a return spring therein, and the return spring can be used to automatically return the two hinges without an external force. In this case, the automatic reset of the window stopper 502 can be realized regardless of which side of the handle window 5010 the spindle 5033 is provided with. In some examples of this embodiment, the spindle 5033 is located on and along the lower side of the handle window 5010, in which case the window stop 502 will rotate inward and downward when the installer pushes the window stop 502 with a hand.

With continued reference to fig. 20, in some examples of the embodiment, the window stopper 502 includes a window stopper body and a connecting wedge 5020 disposed toward one side of the middle frame, the window stopper body is a main body of the window stopper 502, and is substantially in a shape of a plate, the connecting wedge 5020 protrudes from a surface of the window stopper body, and is overall in a shape of a wedge, and a protruding height of the connecting wedge 5020 increases with an increase in distance from the rotating shaft 5033, in other words, in the connecting wedge 5020, a position with a larger distance from the rotating shaft 5033 is higher relative to a protruding height of the surface of the window stopper 502. A screw hole is formed in the connection wedge 5020, the first connection end 5031 of the rotary connector 503 is fixed to the connection wedge 5020 by a screw, and the screw passes through the connection hole in the first connection end 5031 and then is screwed into the screw hole in the connection wedge 5020. In some examples of this embodiment, when the window stopper 502 is in the first state, the plane of the window stopper 502 is coincident with the plane of the back cover body 501, and it should be understood that "coincident" herein means that the plane of the back cover body 501 is substantially coincident with the plane of the window stopper 502, and not absolutely coincident. Meanwhile, when the window shield 502 shields the handle window 5010, the spring hinge is in an incompletely opened state, i.e., in a half-opened state. It will be appreciated that if a sprung hinge were to be moved from the fully open to the closed position, a greater force would be required to achieve this; however, if the snap hinge is initially in an incompletely opened state, it can be closed with a low force. Thus, the use of the coupling wedges 5020 in this embodiment allows the sprung hinge to assume an incompletely opened state in the first state, which reduces the force required to be applied by an installer to push the window stop 502 open.

On the other hand, the protruding height of the connection wedge 5020 can provide enough accommodation space for the screw locking the first connection end 5031, and in some examples of this embodiment, the screw hole provided on the connection wedge 5020 is a blind hole, because the protruding height of the connection wedge 5020 is enough for the screw hole provided therein to have a sufficient length of thread to cooperate with the screw, thereby achieving locking of the screw. Under the condition that the screw holes are blind holes, the screws cannot penetrate through one side, back to the middle frame, of the window shield 502, namely the screws connected to the window shield 502 cannot be seen when the screws are seen from the outer side of the rear cover, and therefore the attractiveness of the rear cover can be improved.

In some examples of the present embodiment, the thickness of the rear cover 50 near the top corner region of the middle bezel may be thinner than the thickness of other regions, please refer to fig. 19, and such a region with a thinner thickness on the rear cover 50 is referred to as a "thin edge region" 5011 in the present embodiment. In fig. 19, two thin edge areas 5011 are provided on the rear cover 50, but it will be understood by those skilled in the art that in other examples of the present embodiment, the thin edge areas 5011 may be distributed in all positions of the rear cover 50 near the top corner area of the middle frame, in which case four thin edge areas 5011 may be provided on one rear cover 50. Since the thin edge portions 5011 are thinner than other areas, the thin edge portions 5011 are more easily damaged by external force, and when an installer needs to open a hole in the rear cover 50 for a signal line or a power line in the middle frame to be led out from the rear cover 50, the thin edge portions 5011 can be removed directly by cutting or the like, so as to form an outlet hole in the rear cover 50.

According to the display device provided by the embodiment, the lifting handle is arranged on the middle frame, and the handle window opposite to the lifting handle is arranged on the rear cover, so that when the display device is carried, the hands of an installer can directly penetrate through the rear cover to hold the lifting handle. More importantly, still set up the window fender on the handle window, the window fender shelters from the handle window under the first state, and can expose the at least partial region of handle window under the second state, can promote the wholeness of back lid, strengthens its aesthetic measure to guarantee the protection effect of back lid to display device inner device. Moreover, the handle window is arranged on the rear cover, so that the rear cover can be disassembled and assembled by an installer greatly, if the handle window is not arranged, the installer can hardly find a proper acting point on the rear cover during disassembly and assembly, particularly during disassembly of the rear cover, so that the operation difficulty is high, and under the condition that the handle window is arranged, the installer can stretch fingers into the handle window to complete the disassembly and assembly operation, so that the convenience of operation is improved.

It should be noted that some or all of the contents of the embodiments of the present application may be organically combined as necessary to obtain one or more new embodiments.

It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.

Claims

1. The splicing sheet is characterized by comprising a sheet body, a splicing through hole and a positioning pin, wherein the splicing through hole and the positioning pin are positioned on the sheet body; the splicing sheet is used for splicing at least two middle frames, and each middle frame is provided with a front side for mounting a display module and a rear side opposite to the front side; the outer contour of the middle frame is rectangular, four corners of the rectangle are respectively provided with a top angle area, at least one top angle area is provided with a splicing sheet assembly area used for being matched with the splicing sheet, and the splicing sheet assembly area comprises an assembly front area and an assembly rear area which are respectively positioned on the front side and the rear side of the middle frame; a splicing screw hole and a positioning pin hole are formed in the splicing sheet assembling area, and the positioning pin hole is configured to be matched with the positioning pin; the splicing screw hole is configured to be fixedly connected with the splicing through hole of the splicing sheet through a threaded fastener.

2. A splice assembly comprising the splice plate of claim 1 and a threaded fastener, and first and second sub-connecting plates; the splicing sheet is further provided with a connecting hole with internal threads, the threaded fastener is configured to be fixedly connected with the splicing screw hole and the splicing through hole of the splicing sheet, the splicing sheet assembling area on the middle frame is provided with an external fixing hole, and the first auxiliary connecting sheet is configured to be connected with the connecting hole with the internal threads on the splicing sheet through the threaded fastener; the second secondary connection tab is configured to connect with the external fixation hole of the middle frame via the threaded fastener.

3. A spliced display screen is characterized by comprising at least two display modules, a plurality of threaded fasteners, at least two middle frames and the spliced sheet of claim 1; the middle frame is provided with a front side for mounting the display module and a rear side opposite to the front side; the outer contour of the middle frame is rectangular, four corners of the rectangle are respectively provided with a top angle area, at least one top angle area is provided with a splicing sheet assembly area used for being matched with the splicing sheet, and the splicing sheet assembly area comprises an assembly front area and an assembly rear area which are respectively positioned on the front side and the rear side of the middle frame; a splicing screw hole and a positioning pin hole which penetrate through the middle frame are formed in the splicing sheet assembling area; the locating pin hole with the dowel pin cooperation of piece is connected, threaded fastener's one end is followed the center front side passes behind the concatenation through-hole with concatenation screw locking is in order to realize the center with the fixing of piece, or threaded fastener's one end is followed the rear side of center passes behind the concatenation through-hole with concatenation screw locking is in order to realize the center with the fixing of piece.

4. The tiled display screen of claim 3, wherein the tiles are mounted in a front mounting area of the middle frame, the front mounting area of the middle frame is provided with a recess for a portion of the tiles to be embedded in the middle frame, and the depth of the recess of the front mounting area is greater than or equal to the thickness of the tiles; the region of the assembly front area, which is close to the vertex of the rectangle, is provided with a vertex angle bulge, the sheet body is provided with a limiting groove, the limiting groove penetrates through the splicing sheet, and the vertex angle bulge is matched with the limiting groove.

5. The tiled display screen of claim 3, wherein the mating clearance of the tiled screw hole and the threaded fastener is greater than the mating clearance of the dowel hole and the dowel pin.

6. The spliced display screen of claim 3, further comprising a mounting bracket and a first secondary connecting piece, wherein the first secondary connecting piece is provided with a first connecting hole, the spliced piece is mounted in the assembled area of the middle frame, the first connecting hole and the connecting hole with the internal thread on the spliced piece are respectively arranged at two sides of the mounting bracket and are connected through the threaded fastener to fix the spliced display screen on the mounting bracket.

7. The spliced display screen of claim 3, further comprising a mounting bracket and a second secondary connecting piece, wherein a second connecting hole is formed in the second secondary connecting piece, an external fixing hole penetrating through the middle frame is further formed in at least one vertex angle area of the middle frame, and the external fixing hole and the second connecting hole in the second secondary connecting piece are respectively arranged on two sides of the mounting bracket and are connected through the threaded fastener to fix the spliced display screen on the mounting bracket.

8. The tiled display screen of claim 3 wherein at least one of the vertex angle regions of the center frame is further provided with an external fixation hole extending through the center frame, and the threaded fastener passes through a mounting carrier from a front mounting region of the center frame through the external fixation hole.

9. The tiled display screen of claim 5, wherein the positioning pin holes penetrate through the front side and the rear side of the middle frame, and one end of the positioning pin hole facing the front side of the middle frame is used for inserting the positioning pins from the front side of the middle frame, and the other end of the positioning pin hole is used for inserting the positioning pins from the rear side of the middle frame.

10. The tiled display screen of any of claims 3-9, further comprising a back cover, wherein the middle frame has a back cover shielding area, the back cover shielding area is an area on the middle frame that is shielded after the back cover is installed, and the back cover shielding area does not overlap with the tile mounting area.