CN219642462U - Middle frame structure and display device - Google Patents

Abstract

The utility model discloses a middle frame structure and a display device, which are applied to a display module, wherein the display module comprises a display panel, a display control assembly and a flexible electric connector, the display panel is electrically connected with the display control assembly through the flexible electric connector, the middle frame structure comprises a bottom frame and a side frame arranged around the bottom frame, the bottom frame comprises a first surface and a second surface which are oppositely arranged, the first surface is used for bearing the display panel, and the second surface is used for bearing the display control assembly; an opening is formed between one side edge of the bottom frame and the side frame, other edges of the bottom frame except the side edge are fixedly connected with the side frame, and the opening is used for the flexible electric connecting piece to extend from the first surface to the second surface.

Description

Middle frame structure and display device

Technical Field

The utility model relates to the technical field of display, in particular to a middle frame structure and a display device.

Background

With the continuous development of display technology, light field display and naked eye 3D display equipment are approaching life, and in order to realize the reliability of the complex display screen assembled integral product, reasonable layout and design are required to be carried out on the bearing frame body.

The existing display device comprises a display component, a module front frame, a module rubber frame, a module rear shell, a backlight component, a complete machine front shell and a complete machine rear shell. In a general design, the front frame of the module, the front frame of the whole machine and the rubber frame are all split, and for some more complex display components, such as 3D, light field, and the like, a multi-layer control connection system corresponding to multi-layer display is provided, and the light source component of the display device may be more complex and needs multiple external connections, which will make the product of the existing display device more complex, and the assembly difficulty is also greatly increased.

Disclosure of Invention

In view of the foregoing drawbacks or shortcomings in the prior art, it is desirable to provide a middle frame structure and a display device, which can realize a highly integrated middle frame structure and reduce manufacturing and assembly difficulties.

In a first aspect, the present utility model provides a middle frame structure, applied to a display module, where the display module includes a display panel, a display control assembly, and a flexible electrical connector, the display panel and the display control assembly are electrically connected by the flexible electrical connector, the middle frame structure includes a bottom frame and a side frame disposed around the bottom frame, where,

the bottom frame comprises a first surface and a second surface which are oppositely arranged, the first surface is used for bearing the display panel, and the second surface is used for bearing the display control assembly;

an opening is formed between one side edge of the bottom frame and the side frame, other edges of the bottom frame except the side edge are fixedly connected with the side frame, and the opening is used for the flexible electric connecting piece to extend from the first surface to the second surface.

Optionally, the length of the bottom frame along the first direction is the same as the length of the display module along the first direction, and the length of the bottom frame along the second direction is the same as the length of the display module along the second direction;

the length of the side frame along the first direction is the same as the length of the display module along the first direction, and the length of the side frame along the second direction is greater than the length of the display module along the second direction.

Optionally, the side frame comprises a first frame body and a second frame body, wherein,

the first frame body is fixedly connected with the bottom frame, and the length of the first frame body along the second direction is the same as the length of the bottom frame along the second direction;

the second frame body comprises two side edges arranged along the second direction, and the first frame body is fixedly connected with the second frame body at the side edge positions.

Optionally, the first frame body includes a boss extending in a direction parallel to the bottom frame, an upper surface of the boss contacts with the first surface, and the first frame body is fixedly connected with the bottom frame at the boss position.

Optionally, the first frame body is fixedly connected with the second frame body through a connecting block, the connecting block comprises a first section connected with the first frame body and a second section connected with the second frame body, and the lower surface of the connecting block is flush with the second surface.

Optionally, the upper surface of the second section is in contact with the upper surface of the boss, and the bottom frame is provided with an avoidance opening at a position corresponding to the second section.

Optionally, the bottom frame is provided with at least one stopper on the side edge, and the stopper protrudes from the first surface; the limiting block is formed by bending the base material of the bottom frame towards one side close to the first surface.

In a second aspect, the present utility model provides a display device, including a display module and a middle frame structure as described in any one of the above, where the display panel is fixed on the first surface, the display control component is fixed on the second surface, and the flexible electrical connector extends from the first surface to the second surface through the opening and is electrically connected with the display control component.

Optionally, the display module includes at least one display panel and with at least one display panel stacks the light source subassembly that sets up, every display panel through first flexible electric connection piece with the display control subassembly electricity that corresponds, the light source subassembly is connected with the light source control subassembly electricity that corresponds through the second flexible electric connection piece, the light source control subassembly is fixed the second surface, the second flexible electric connection piece pass through the opening with light source control subassembly electricity is connected.

Optionally, the display module further includes a cover plate disposed on the display panel, and the cover plate is fixedly connected with the upper surface of the side frame.

The technical scheme provided by the embodiment of the utility model can comprise the following beneficial effects:

the middle frame structure provided by the embodiment of the utility model adopts a mode of combining the bottom frame and the side frames to realize the high-integration middle frame, can be used as a front frame and a rear shell of a display module, and is also a front shell of a whole product, so that the complexity of the product is reduced, and the installation mode is simplified; through the opening that sets up between the side edge of underframe and side frame, further convenient line and control assembly's installation reduces the edge size of well frame structure, realizes narrow frame.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:

fig. 1 is a schematic structural diagram of a middle frame structure according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view at B-B in FIG. 1;

FIG. 3 is an exploded view of a middle frame structure according to an embodiment of the present utility model;

FIG. 4 is an enlarged schematic view of FIG. 2 at C;

FIG. 5 is a schematic cross-sectional view at D-D of FIG. 1;

FIG. 6 is a schematic cross-sectional view of a middle frame structure at E-E in FIG. 3 according to an embodiment of the present utility model;

FIG. 7 is a schematic cross-sectional view taken at F-F in FIG. 3;

fig. 8 is an exploded view of a display module according to an embodiment of the present utility model;

fig. 9 is an exploded side view of a display module according to an embodiment of the present utility model;

fig. 10 is a schematic cross-sectional view of a display device according to an embodiment of the present utility model;

fig. 11 is an enlarged schematic view at G in fig. 10.

In the figure:

100. a middle frame structure; 200. a display module;

110. a bottom frame; 120. a side frame; 130. an opening;

111. a first surface; 112. a second surface;

1101. a first side edge; 1102. a second side edge; 1103. a third side edge; 1104. a fourth side edge; 1201. a first side frame; 1202. a second side frame; 1203. a third side frame; 1204. a fourth side frame;

121. a first frame; 122. a second frame; 1205. a side edge;

140. a boss; 150. a connecting block; 151. a first section; 152. a second section; 160. an avoidance port; 170. a limiting block;

x, a first direction; y, second direction;

210. a display panel; 220. a flexible electrical connection; 230. a control assembly; 240. a cover plate; 241. double faced adhesive tape;

2101. a first display panel; 2201. a first flexible electrical connection; 2301. a first display control assembly;

2102. a second display panel; 2202. another first flexible electrical connection; 2302. a second display control assembly;

2103. a light source assembly; 2203. a second flexible electrical connection; 2303. and a light source control assembly.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the utility model are shown in the drawings.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1-2, the present utility model provides a middle frame structure 100, which is applied to a display module 200, and includes a bottom frame 110 and a side frame 120 disposed around the bottom frame 110, wherein an opening 130 is disposed between one side edge of the bottom frame 110 and the side frame 120, and other edges of the bottom frame 110 except the side edge are in contact with the side frame 120.

The display module includes a display panel 210, a display control assembly 230 and a flexible electrical connector 220, wherein the display panel 210 and the display control assembly 230 are electrically connected through the flexible electrical connector 220.

The bottom frame 110 includes a first surface 111 and a second surface 112 disposed opposite to each other, the first surface 111 is used for carrying the display panel 210, and the second surface 112 is used for carrying the display control assembly 230; the opening 130 is for the flexible electrical connector 220 to extend from the first surface 111 to the second surface 112.

The middle frame structure 100 provided in the embodiment of the utility model adopts a mode of combining the bottom frame 110 and the side frames 120 to realize a highly integrated middle frame, which can be used as a front frame and a rear shell of the display module 200 and also as a front shell of a whole product, thereby reducing the complexity of the product and simplifying the installation mode; through the opening 130 that sets up between the side edge of underframe 110 and side frame 120, reduce the bending route of winding displacement, further make things convenient for the installation of wiring and control assembly 230, reduce the marginal dimension of middle frame structure 100, realize narrow frame.

It should be noted that, in the embodiment of the present utility model, the bottom frame 110 includes a first surface 111 and a second surface 112 that are disposed opposite to each other, the first surface 111 of the bottom frame 110 faces the viewing surface of the user, the first surface 111 of the bottom frame 110 is a side surface close to the display panel 210, and the second surface 112 of the bottom frame 110 is a side surface far from the display panel 210.

In the embodiment of the present utility model, the bottom frame 110 is disposed along a direction parallel to the display module 200, and the side frames 120 are disposed along a direction perpendicular to the display module 200, and it is understood that "parallel" in the present utility model includes a case of being completely parallel and a case of being substantially parallel, where "substantially parallel" refers to an included angle of less than 5 degrees. The bottom frame 110 and the side frame 120 form an accommodating space adapted to the display module 200, and are used for placing and fixing the display module 200.

The length of the bottom frame 110 along the first direction X is the same as the length of the display module 200 along the first direction X, and the length of the bottom frame 110 along the second direction Y is the same as the length of the display module 200 along the second direction Y.

The bottom frame 110 is planar and includes a first side edge 1101, a second side edge 1102, a third side edge 1103 and a fourth side edge 1104, the first side edge 1101 is opposite to the second side edge 1102, the third side edge 1103 is opposite to the fourth side edge 1104, and the third side edge 1103 and the fourth side edge 1104 are respectively connected to the first side edge 1101 and the second side edge 1102. In the same manner, the side frames 120 include a first side frame 1201, a second side frame 1202, a third side frame 1203, and a fourth side frame 1204 that are disposed around the bottom frame 110, and the positions of the openings 130 are not limited in the embodiment of the present utility model, and are disposed as needed in the specific application, and in the embodiment of the present utility model, the arrangement between the fourth side frame 1204 and the fourth side frame 1104 is exemplified.

The length of the side frame 120 along the first direction X is the same as the length of the display module 200 along the first direction X, and the length of the side frame 120 along the second direction Y is greater than the length of the display module 200 along the second direction Y. I.e. the length of the first side frame 1201 is greater than the length of the first side edge 1101, and the length of the fourth side frame 1204 is equal to the length of the second side frame 1202.

In the embodiment of the utility model, the area of the bottom frame 110 is the same as the area of the display module 200 (the display panel 210), so that the whole surface of the display panel 210 can be carried, and the strength of the display device can be improved. By providing the opening 130 at the side edges, the control assembly 230 can be conveniently mounted to the second surface 112 of the base frame 110. The utility model integrates the bottom frame 110 and the side frames 120, and the middle frame structure 100 can be used as a front frame of a module, a rear shell of the module and a front shell of a whole machine, so that the number of components is greatly reduced, and the processing and mounting cost of the middle frame structure 100 can be reduced, thereby improving the mounting efficiency of the middle frame structure 100. Of course, in other embodiments of the present utility model, the middle frame structure 100 may be provided as an integral piece, which is not particularly limited in other embodiments of the present utility model.

In the embodiment of the present utility model, a split structure is exemplarily described, specifically, as shown in fig. 3, the side frame 120 includes a first frame 121 and a second frame 122, where the first frame 121 is fixedly connected to the bottom frame 110, and a length of the first frame 121 along the second direction Y is the same as a length of the bottom frame 110 along the second direction Y.

In the present utility model, the side frame 120 is separated into a first frame 121 and a second frame 122 from the position of the opening 130 (such as the position L1 in fig. 1), and the first frame 121 is disposed around the first side edge 1101, the second side edge 1102 and the third side edge 1103 of the bottom frame 110, that is, a part of the first side edge 1201 is located on the first frame 121 and a part of the first side edge 1201 is located on the second frame 122.

The second frame 122 includes two sides 1205 disposed along the second direction Y, and the first frame 121 is fixedly connected to the second frame 122 at the positions of the sides 1205. The two sides 1205 of the second frame 122 are used to form the size of the opening 130, and also used for the fixed connection between the second frame 122 and the first frame 121. By detaching the frame on the first side frame 1201 (the second side frame 1202), the assembly of the middle frame structure 100 is facilitated, and the installation of the display module 200 is also facilitated.

The present utility model provides a display device, comprising a display module 200 and a middle frame structure 100 as described in any one of the above, wherein the display panel 210 is fixed on a first surface 111 of the bottom frame 110, the display control component 230 is fixed on a second surface 112 of the bottom frame 110, and a flexible electrical connector 220 on the display panel 210 extends from the first surface 111 to the second surface 112 through the opening 130 to be electrically connected with the display control component 230.

In a specific installation, the display panel 210 and other optical components may be installed on the first surface 111 of the bottom frame 110, and then the control component 230 is fixed on the second surface 112 of the bottom frame 110 through the opening 130, and the flexible electrical connector 220 also passes through the opening 130. It will be appreciated that if the center frame structure 100 is configured as a single unit, the center frame structure 100 needs to be turned back and forth during installation, and needs to be operated through the front surface during fixing of the display panel 210, and needs to be operated through the back surface during fixing of the control unit 230. It will be appreciated that the width a of the opening 130 in the second direction Y also affects the overall size of the product, which if too large affects the size of the product itself, too small would lead to poor installation of the wiring or control assembly 230 at the time of assembly. In particular, the opening 130 has a small width a, requiring extreme care during assembly, which greatly affects assembly efficiency. In addition, because the middle frame structure 100 is highly integrated, the processing mode is often single, and if the process is complex, the price is easy to be high.

In the utility model, the split structure is adopted, the display panel 210 is fixed on the combined structure of the first frame 121 and the bottom frame 110, and the control assembly 230 does not need to pass through the small opening 130 because the second frame 122 is not blocked, so the control assembly 230 can be directly fixed from the lower part of the combined structure, and overturning is not needed, after the installation of the display module 200 is completed, the first frame 121 and the second frame 122 are assembled, so the problem of inconvenient integral assembly of products can be effectively solved, damage to the flexible electric connector 220 or the control assembly 230 is prevented, in addition, the processing of the first frame 121 and the second frame 122 is simplified, the processing difficulty and time are greatly reduced as a whole, the cost is reduced, and the method is suitable for mass production.

The display panel 210 in the present utility model may be a liquid crystal display panel 210 (Liquid Crystal Display, LCD); the display panel 210 may also be an electroluminescent display panel 210 or a photoluminescent display panel 210. In the case where the display panel 210 is an electroluminescent display panel 210, the electroluminescent display panel 210 may be an organic electroluminescent (Organic Light Emitting Diode, abbreviated as OLED) display panel 210 or a quantum dot electroluminescent (Quantum Dot Light Emitting Diode, abbreviated as QLED) display panel 210. In the case where the display panel 210 is a photoluminescent display panel 210, the photoluminescent display device may be a quantum dot photoluminescent display panel 210.

The control assembly 230 may be a circuit board, which may be a flexible circuit board (Flexible Printed Circuit, abbreviated as FPC) or a printed circuit board (Printed Circuit Board, abbreviated as PCB), and the components carried by the circuit board are configured to transmit light-emitting driving signals, power signals, control signals, etc. to the display panel 210 so as to drive and control the light-emitting display of the display panel 210.

The circuit board and the display panel 210 may be electrically connected through a flexible connection board, which may be a flexible circuit board (FPC), a Chip On Film (COF), or a circuit cable, etc., which is not limited in the present utility model.

The display module 200 may further include other optical components, such as a reflective film, a light guide plate, a diffusion film, a brightness enhancement film, etc., which is not limited in the present utility model.

In this embodiment of the present utility model, the first frame 121 includes a boss 140 extending in a direction parallel to the bottom frame 110, the lower surface of the boss 140 contacts the first surface 111 of the bottom frame 110, and the first frame 121 is fixedly connected to the bottom frame 110 at the position of the boss 140. The boss 140 provided on the first frame 121 of the present utility model facilitates the installation of the bottom frame 110 and the first frame 121, increases the contact area between the bottom frame 110 and the first frame 121, and connects the bottom frame 110 and the boss 140 on the second surface 112 of the bottom frame 110 by fastening with screws or the like, thereby improving the connection tightness between the bottom frame 110 and the first frame 121.

On the other hand, the boss 140 disposed on the first frame 121 may further facilitate the fixing of the display module 200, the boss 140 and the bottom frame 110 may form a step structure in the accommodating space, and the step may enable the optical assembly or the backlight module to be stably mounted under the limit of the step, thereby reducing the fixing structure of the internal assembly and improving the internal space utilization of the middle frame structure 100.

In addition, the first frame 121 and the second frame 122 are fixedly connected through a connection block 150, the connection block 150 includes a first section 151 connected with the first frame 121 and a second section 152 connected with the second frame 122, and the lower surface of the connection block 150 is flush with the second surface 112 of the bottom frame 110. Wherein, the upper surface of the second section 152 contacts with the upper surface of the boss 140, and the bottom frame 110 is provided with a relief opening 160 at a position corresponding to the second section 152.

In the embodiment of the present utility model, the connection block 150 can facilitate processing and assembly, and can facilitate increasing the contact area between the second frame 122 and the first frame 121, and the second frame 122 and the first frame 121 are connected to each other by fixing means such as screws on the lower surface of the connection block 150, so that the connection tightness between the second frame 122 and the first frame 121 can be improved. Since the first frame 121 is flush with the first side edge 1101 of the bottom frame 110 at the position of the first side frame 1201, the avoidance opening 160 is provided at the position of the first section 151 corresponding to the connection block 150, so that the connection block 150 is convenient to be fixedly mounted.

In other alternative embodiments of the present utility model, the bottom frame 110 is provided with at least one stopper 170 on the side edge, the stopper 170 protruding from the first surface 111 of the bottom frame 110; the stopper 170 is bent toward the first surface 111 side of the bottom frame 110 through the substrate of the bottom frame 110 to form an L-shaped stopper 170. The limiting block 170 is used for limiting the display module 200, and is convenient to fix and install.

It should be noted that, in the embodiment of the present utility model, the bottom frame 110 has no structural feature, so a sheet metal process may be adopted, and of course, in different embodiments, the stopper 170 may be further disposed in other manners according to materials, structures, etc., for example, a split structure is adopted, and the fixed connection between the stopper 170 and the bottom frame 110 is realized by means of screws, etc. In an embodiment of the present utility model, one or more limiting blocks 170 may be disposed on the fourth side edge 1104 of the bottom frame 110, which is not limited in this aspect of the present utility model.

Based on the same inventive concept, the embodiment of the present utility model further provides a display device, where the display device is a light field display product, a 3D naked eye display, or the like, the display module 200 includes at least one display panel 210 and a light source assembly 2103 stacked with the at least one display panel 210, each display panel 210 is electrically connected to a corresponding display control assembly 230 through a first flexible electrical connector 2201, the light source assembly 2103 is electrically connected to a corresponding light source control assembly 2303 through a second flexible electrical connector 2203, the light source control assembly 2303 is fixed on the second surface 112 of the bottom frame 110, and the second flexible electrical connector 2203 is electrically connected to the light source control assembly 2303 through the opening 130.

Illustratively, the display module 200 includes a first display panel 2101 and a second display panel 2102, the first display panel 2101 may be a 3D display panel 210, the second display panel 2102 may be a 2D display panel 210, the second display panel 2102 is disposed on a side of the first display panel 2101 near the park-stroking assembly, the first display panel 2101 is electrically connected to the first display control assembly 2301 through a first flexible electrical connector 2201, and the second display panel 2102 is electrically connected to the second display control assembly 2302 through another first flexible electrical connector 2201. The light source assembly 2103 is used as a backlight part of a product, and can be a MINI LED lamp panel, and is electrically connected with the light source control assembly 2303 through a second flexible electrical connector 2203, wherein the overall space length of the light source control assembly 2303 and the display control assembly 230 can be close to the length of the display panel 210 or the light source assembly 2103.

The boss 140 on the middle frame structure 100 divides the inner accommodating space into a first accommodating portion located at an upper layer and a second accommodating portion located at a lower layer, when the light source control assembly 2303 is specifically installed, the light source control assembly 2303 is fixed in the second accommodating portion, and the second flexible electrical connector 2203 and the light source control assembly 2303 are bent to the second surface 112 of the bottom frame 110 at the position of the fourth side edge 1104 on the bottom frame 110; and fixing the second display panel 2102 in the first accommodating portion, limiting the first surface of the boss 140, and bending the first flexible electrical connector 2201 and the first display control assembly 2301 of the second display panel 2102 to the second surface 112 of the bottom frame 110 at the position of the fourth side 1104 on the bottom frame 110, where it can be understood that when the positions of the first flexible electrical connector 2201 and the second flexible electrical connector 2203 overlap partially, the first flexible electrical connector 2201 and the second flexible electrical connector 2203 are stacked. Similarly, the first display panel 2101, the first flexible electrical connector 2201 and the second display control unit 2302 are fixed, and finally, the second frame 122 is fixed on the first frame 121, and the opening 130 is formed, and a plurality of first flexible electrical connectors 2201 and second flexible electrical connectors 2203 may be stacked at the position of the opening 130.

The display device further comprises a complete machine rear shell 300, and the complete machine rear shell 300 is fixedly connected with the middle frame structure 100.

Optionally, the display module 200 further includes a cover plate 240 disposed on the display panel 210, where the cover plate 240 is fixedly connected to the first surface of the side frame 120. The cover 240 may be made of tempered glass, and is also a surface for displaying an appearance, specifically, may be adhered to the side frame 120 by using a foam double faced adhesive tape 241, or may be adhered to the side frame 120 by using a water gel. The hydrocolloid may be an optically clear resin (Optically Clear Resin, OCR) or an optically clear adhesive (Optically Clear Adhesive, OCA).

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the utility model. Terms such as "disposed" or the like as used herein may refer to either one element being directly attached to another element or one element being attached to another element through an intermediate member. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.

The present utility model has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the embodiments described. Those skilled in the art will appreciate that many variations and modifications are possible in light of the teachings of the utility model, which variations and modifications are within the scope of the utility model as claimed.

Claims (10)

1. The middle frame structure is characterized by being applied to a display module, wherein the display module comprises a display panel, a display control assembly and a flexible electric connecting piece, the display panel is electrically connected with the display control assembly through the flexible electric connecting piece, the middle frame structure comprises a bottom frame and a side frame arranged around the bottom frame, wherein,

the bottom frame comprises a first surface and a second surface which are oppositely arranged, the first surface is used for bearing the display panel, and the second surface is used for bearing the display control assembly;

an opening is formed between one side edge of the bottom frame and the side frame, other edges of the bottom frame except the side edge are fixedly connected with the side frame, and the opening is used for the flexible electric connecting piece to extend from the first surface to the second surface.

2. The middle frame structure of claim 1, wherein a length of the bottom frame in a first direction is the same as a length of the display module in the first direction, and a length of the bottom frame in a second direction is the same as a length of the display module in the second direction;

the length of the side frame along the first direction is the same as the length of the display module along the first direction, and the length of the side frame along the second direction is greater than the length of the display module along the second direction.

3. The middle frame structure of claim 2, wherein the side frames comprise a first frame body and a second frame body, wherein,

the first frame body is fixedly connected with the bottom frame, and the length of the first frame body along the second direction is the same as the length of the bottom frame along the second direction;

the second frame body comprises two side edges arranged along the second direction, and the first frame body is fixedly connected with the second frame body at the side edge positions.

4. A mid-frame structure as claimed in claim 3, wherein the first frame body includes a boss extending in a direction parallel to the bottom frame, an upper surface of the boss being in contact with the first surface, the first frame body being fixedly connected to the bottom frame at the boss location.

5. The middle frame structure of claim 4, wherein the first frame body and the second frame body are fixedly connected through a connecting block, the connecting block comprises a first section connected with the first frame body and a second section connected with the second frame body, and the lower surface of the connecting block is flush with the second surface.

6. The middle frame structure of claim 5, wherein an upper surface of the second section is in contact with an upper surface of the boss, and the bottom frame is provided with a relief opening at a position corresponding to the second section.

7. The middle frame structure according to claim 1, wherein the bottom frame is provided with at least one stopper on the side edge, the stopper protruding from the first surface; the limiting block is formed by bending the base material of the bottom frame towards one side close to the first surface.

8. A display device, comprising a display module and a middle frame structure according to any one of claims 1-7, wherein the display panel is fixed on the first surface, the display control assembly is fixed on the second surface, and the flexible electrical connector extends from the first surface to the second surface through the opening to be electrically connected with the display control assembly.

9. The display device of claim 8, wherein the display module comprises at least one display panel and a light source assembly stacked with the at least one display panel, each display panel is electrically connected with a corresponding display control assembly through a first flexible electrical connector, the light source assembly is electrically connected with a corresponding light source control assembly through a second flexible electrical connector, the light source control assembly is fixed on the second surface, and the second flexible electrical connector is electrically connected with the light source control assembly through the opening.

10. The display device of claim 8, wherein the display module further comprises a cover plate disposed on the display panel, the cover plate being fixedly connected to the upper surface of the side frame.