Display device and middle frame structure

Abstract

The present application relates to the field of display devices, and provides a display device and a middle frame structure. The display device comprises the middle frame structure and a back plate. The middle frame structure is arranged at an edge of the back plate. The display device further comprises a light source, a light diffusion structure, and a reflecting member. A first support plate is provided on an inner side of the middle frame structure. The light diffusion structure is connected to the first support plate. The first support plate comprises a first portion and a second portion, the second portion extends in a direction away from the light diffusion structure, and the second portion fixes the reflecting member. In addition, the first support plate is not connected to the back plate. The first support plate is not connected to the back plate, and the middle frame structure is decoupled from the back plate. In order to configure display devices having different optical distances, the back plate may not be replaced, it is necessary to change the middle frame structure, change the arrangement position of the first support plate, and change the optical distance, so that the back plate is compatible with a variety of different optical distances, and a support member for fixing the light diffusion structure has a simple structure and occupies a small space.

Description

Display device and middle frame structure

[0001] The present application claims priority to the Chinese patent application No. 202411392593.0, filed on September 30, 2024, and entitled "Display device and middle frame structure", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of display devices, and in particular to a display device and a middle frame structure that can be applied to the display device. BACKGROUND

[0003] In the field of liquid crystal display technology, the mixing distance is a key parameter for determining display quality. As shown in FIG. 1, a part of the structure of an existing display device is shown. The light source 30 is fixed on the bearing surface M surface of the back plate 10, and the mixing distance d is the distance between the bearing surface M surface and the optical diffusion plate 20.

[0004] The mixing distances of different models on the market are basically different. For example, the mixing distance of high-end products is smaller, while the mixing distance of low-end products is larger. When the overall structure scheme is consistent, but the mixing distance is different, a scheme of re-opening the mold of the structural part can be used to achieve it. However, for example, when the mixing distance is larger, it will lead to the size of the re-opened mold structural part being significantly larger, so that the structural part occupies a larger space in the display device. SUMMARY

[0005] The present application provides a display device and a middle frame structure that can be applied to the display device. The main purpose is to provide some combination structures of back plates and middle frames. Not only can the back plate be compatible with multiple different mixing distances, but also the size of the re-opened mold middle frame structural part is smaller, which will not occupy a larger space, and the manufacturing cost is also lower.

[0006] To achieve the above purpose, the embodiments of the present application adopt the following technical solutions:

[0007] In a first aspect, the present application provides a display device, which can be a television, a tablet computer (pad), a notebook computer, an ultra-mobile personal computer (UMPC), etc.

[0008] The display device comprises a middle frame structure and a back plate, the middle frame structure is arranged at the edge of the back plate, and the back plate is connected with the middle frame structure; the display device further comprises a light source, a light diffusion structure and a reflection member, the light source is arranged on the back plate, and the light diffusion structure is arranged on the light emission side of the light source; the inner side of the middle frame structure is provided with a first support plate; the back plate, the first support plate and the light diffusion structure are arranged in sequence in a first direction, the first direction is the thickness direction of the display device, the light diffusion structure is connected with the first support plate; wherein the first support plate comprises a first part and a second part, the second part extends away from the light diffusion structure, and the second part fixes the reflection member; and the first support plate is not connected with the back plate.

[0009] In the display device provided in the application, the middle frame structure comprises a first support plate, the light diffusion structure is connected with the first support plate, the light source is fixed on the back plate, and it can be understood that the light source and the light diffusion structure are arranged on different structural members, the light source is arranged on the back plate, the light diffusion structure is arranged on the middle frame structure, and the first support plate is not connected with the back plate, that is, the middle frame structure is decoupled from the back plate; in this way, when configuring display devices with different mixing distances, the back plate can be compatible with multiple different mixing distances without being replaced, and the middle frame structure needs to be changed, the setting position of the first support plate needs to be changed, and the mixing distance needs to be changed.

[0010] In addition, the first support plate with a simple structure is used as the carrier of the light diffusion structure and the reflection member in the application, and when the mixing distance is large, the inclination angle of the second part can be changed, and the first support plate with a simple structure basically does not occupy a large space.

[0011] In an implementable manner, the first support plate and the back plate have a containing space therebetween, and the containing space is used to provide the mixing distance of the display device.

[0012] The first support plate and the back plate have a containing space therebetween in the application, and the containing space is used to provide the mixing distance of the display device, that is, when configuring display devices with different mixing distances, the back plate can be compatible with multiple different mixing distances without being replaced, and the middle frame needs to be changed, the setting position of the first support plate needs to be changed, and the containing space needs to be changed, so as to change the mixing distance.

[0013] In an implementable manner, the light diffusion structure is connected with the first part, and the distance between the light diffusion structure and the back plate is the mixing distance of the display device.

[0014] In an implementable manner, the first support plate is an integrally formed structural member, that is, the first part and the second part are integrally formed.

[0015] In an implementable manner, one end of the second part is connected with the first part, and the other end is suspended.

[0016] It can be understood that the second part has a fixed end and a free end, the fixed end is connected with the first part, and the free end is suspended and not connected with other structural members. In some manufacturing processes, the manufacturing difficulty of the middle frame can be reduced. In addition, when the light mixing distance is changed, the inclination angle of the second part can be changed, without requiring more requirements for the mold opening of the structural member, so that the manufacturing process can be simplified and the manufacturing cost can be reduced.

[0017] In an implementable manner, the inner side of the middle frame structure is provided with a second support plate, the second support plate is located on the side of the back plate away from the first support plate; and the back plate is connected with the second support plate.

[0018] In this implementation manner, the second support plate can be provided to fixedly connect the back plate.

[0019] In an implementable manner, the end of the second part away from the first part is not connected with the second support plate.

[0020] In this example, the back plate is fixed by the second support plate, and the light diffusion structure is fixed by the first support plate, and in this example, the end of the second part of the first support plate away from the first part is not connected with the second support plate, that is, the first support plate and the second support plate are separated from each other and are not connected together through the second part, so that when the light mixing distance is changed, the inclination angle of the second part can be changed, without requiring more requirements for the mold opening of the structural member, so that the manufacturing process can be simplified and the manufacturing cost can be reduced.

[0021] In an implementable manner, the end of the first part away from the second part is connected with the inner side of the middle frame structure; the second support plate is connected with the inner side of the middle frame structure; and the back plate is arranged between the first support plate and the second support plate.

[0022] In this implementation structure, the first support plate and the second support plate are both directly connected with the inner side of the middle frame structure, and the back plate is arranged between the first support plate and the second support plate, so that the frame size of the display device can be reduced and the appearance aesthetic degree can be optimized.

[0023] In an implementable manner, the inner side of the middle frame structure is provided with a third support plate; the third support plate is located between the first support plate and the second support plate, and a mounting cavity is formed between the second support plate and the third support plate; and the edge portion of the back plate is located in the mounting cavity.

[0024] The edge portion of the back plate is arranged between the second support plate and the third support plate, so that the back plate can be clamped and the mounting stability of the back plate can be improved.

[0025] In an implementable manner, one end of the third support plate is connected with the inner side of the middle frame structure, and the other end extends away from the second support plate.

[0026] In this way, the opening of the mounting cavity formed has a horn structure, facilitating assembly of the back plate.

[0027] In an implementable manner, the edge of the back plate comprises a bent portion, and the bent portion is bent by 180°.

[0028] By bending the edge of the back plate by 180°, the strength of the back plate can be enhanced, and the stability of the back plate can be improved.

[0029] In an implementable manner, the back plate comprises a first segment, a bent segment and a second segment, the bent segment connects the first segment and the second segment, and the second segment is farther away from the light diffusion structure than the first segment; the first segment comprises a bent portion, for example, the bent portion is bent by 180°.

[0030] By providing the bent segment and the bent portion bent by 180° on the back plate, the strength of the back plate can be further improved.

[0031] In an implementable manner, the back plate is an integrally formed structure. It can be understood that the first segment, the bent segment and the second segment are integrally formed.

[0032] In an implementable manner, the second support plate comprises a third portion, a bent portion and a fourth portion, the bent portion connects the third portion and the fourth portion, and the fourth portion is farther away from the light diffusion structure than the third portion; the first segment of the back plate is located between the third portion of the second support plate and the first portion of the first support plate; and the second segment of the back plate is connected with the fourth portion of the second support plate.

[0033] In some examples, the third portion of the second support plate and the first portion of the first support plate can be arranged in parallel.

[0034] In an implementable manner, the second support plate is an integrally formed structure. It can be understood that the third portion, the bent portion and the fourth portion are integrally formed.

[0035] In some examples, the first segment of the back plate is arranged opposite to the third portion of the second support plate, the bent segment of the back plate is arranged opposite to the bent portion of the second support plate, and the second segment of the back plate is arranged opposite to the fourth portion of the second support plate.

[0036] In an implementable manner, the second segment of the back plate has at least one reinforcing rib, for example, can comprise a plurality of reinforcing ribs, and the plurality of reinforcing ribs are arranged in intervals along the extension direction of the edge of the back plate.

[0037] By providing the reinforcing rib on the second segment of the back plate, the strength of the back plate can be further improved.

[0038] In an implementable manner, the second section of the back plate is fixedly connected with the fourth portion of the second support plate through a fastener.

[0039] For example, the second section and the fourth portion are fixedly connected through a bolt, so that the back plate and the middle frame are fixedly connected together, improving the connection reliability of the back plate and the middle frame.

[0040] In an implementable manner, the second section of the back plate and the fourth portion of the second support plate are provided with a clamping structure, and the clamping structure connects the middle frame structure and the back plate.

[0041] When assembling the back plate and the middle frame structure, the clamping structure can be used for pre-positioning the back plate and the middle frame structure, facilitating the fixed installation of the thickness.

[0042] In an implementable manner, the clamping structure includes a clamping groove and a clamping buckle, one of which is arranged on the second section of the back plate, and the other is arranged on the fourth portion of the second support plate.

[0043] The clamping buckle and the clamping groove are used as the clamping structure, which is simple in structure and convenient to manufacture.

[0044] In an implementable manner, the second section of the back plate and the fourth portion of the second support plate are provided with a limiting structure, and the limiting structure is used to prevent the back plate from moving along a second direction relative to the middle frame structure, the second direction being parallel to the extension direction of the edge of the back plate.

[0045] The limiting structure is arranged at the matching position of the back plate and the middle frame structure, and when assembling the back plate and the middle frame structure, the limiting structure can be used to limit the position of the back plate and the middle frame structure, facilitating subsequent installation and fixation.

[0046] In an implementable manner, the limiting column and the limiting groove are arranged, the limiting groove is arranged on the fourth portion of the second support plate, and the opening of the limiting groove penetrates through the edge of the fourth portion, and the limiting column is arranged on the second section of the back plate.

[0047] In an implementable manner, the middle frame structure includes a frame, the frame has an outer wall and an inner wall, the inner wall surrounds a space for accommodating the back plate; the first portion is connected with the inner wall of the frame; the second support plate is connected with the inner wall of the frame; and the back plate can be arranged between the first support plate and the second support plate.

[0048] The frame is simple in structure, and the first support plate and the second support plate are both directly connected with the inner wall of the frame, and the back plate is arranged between the first support plate and the second support plate, so that the frame size of the display device can be reduced, and the appearance aesthetics can be optimized.

[0049] In an implementable manner, the middle frame structure comprises a frame and an inner rib, the frame and the inner rib are oppositely arranged, the inner rib is surrounded by an inner wall of the frame away from the frame to form a space for accommodating the back plate; the frame and the inner rib have a gap therebetween; the first part is connected with the inner wall of the inner rib; and the second support plate is connected with the inner wall of the inner rib.

[0050] In an implementable manner, the back plate is located on a side of the second support plate away from the first support plate, and an edge portion of the back plate extends into the gap.

[0051] It can be understood that the edge portion of the back plate is bent by 90°, and the bending can improve the mechanical strength of the back plate.

[0052] In an implementable manner, the frame, the inner rib, the first support plate, the second support plate and the third support plate are integrally formed. In an implementable manner, the reflector is an integral structure, a part of the reflector is fixed on the back plate, and the other part is fixed on the first part.

[0053] In an implementable manner, the middle frame further comprises a fourth support plate, the fourth support plate is arranged on the inner side of the middle frame structure; the fourth support plate is located on the light exit side of the light diffusion structure; and the display device further comprises a display screen, the display screen is fixed on the fourth support plate.

[0054] In an implementable manner, an edge portion of the light diffusion structure is located between the first support plate and the fourth support plate.

[0055] Arranging the edge portion of the light diffusion structure between the fourth support plate and the first support plate can provide clamping action to the light diffusion structure, and improve the installation stability of the light diffusion structure.

[0056] In a second aspect, the application provides a middle frame structure which can be applied in a display device, the middle frame structure can comprise: a frame and a first support plate; the first support plate is arranged on the inner side of the frame; the first support plate comprises a first part and a second part, the first part is used for fixing a light diffusion structure in the display device, the second part extends away from the light diffusion structure, the second part is used for fixing a reflector in the display device, one end of the second part is connected with the first part, and the other end is suspended.

[0057] In the middle frame structure provided by the application, the first support plate arranged on the inner side of the frame supports the light diffusion structure in the display device, and the second part of the first support plate has a fixed end and a freely suspended end, the fixed end is connected with the first part, and the freely suspended end is suspended and not connected with other structural members. In some manufacturing processes, the manufacturing difficulty of the middle frame structure can be reduced. In addition, when the mixing distance is changed, the inclination angle of the second part can be changed, and more requirements for opening molds of structural members are not needed, so that the manufacturing process can be simplified and the manufacturing cost can be reduced.

[0058] In an implementable manner, the middle frame structure further comprises a second support plate, the second support plate is arranged inside the frame; the second support plate is used for fixing a back plate in the display device; an end of the second part away from the first part is not connected with the second support plate.

[0059] In this example, the second support plate is used to fix the back plate, and the first support plate is used to fix the light diffusion structure, and in this example, the end of the second part of the first support plate away from the first part is not connected with the second support plate, that is, the first support plate and the second support plate are separated from each other and are not connected together through the second part, so that when the light mixing distance changes, the inclination angle of the second part can be changed, and more requirements for opening molds of structural parts can be reduced, and the preparation process can be simplified and the manufacturing cost can be reduced.

[0060] In an implementable manner, the middle frame structure further comprises a third support plate, the third support plate is arranged inside the frame; the third support plate is located between the first support plate and the second support plate, and a mounting cavity is formed between the second support plate and the third support plate, the mounting cavity is used for accommodating an edge portion of the back plate of the display device.

[0061] Arranging the edge portion of the back plate between the second support plate and the third support plate can provide clamping action to the back plate and improve the installation stability of the back plate.

[0062] In an implementable manner, the frame has an outer wall and an inner wall, the inner wall surrounds a space for accommodating the back plate of the display device; the first part is connected with the inner wall of the frame; and the second support plate is connected with the inner wall of the frame.

[0063] The frame with simple structure is adopted, and the first support plate and the second support plate are both directly connected with the inner wall of the frame, and the back plate is arranged between the first support plate and the second support plate, so that the frame size of the display device can be reduced and the appearance aesthetics can be optimized.

[0064] In an implementable manner, the second support plate comprises a third part, a bent part and a fourth part, the bent part connects the third part and the fourth part, and the fourth part is farther away from the first support plate than the third part; the third part is connected with the inner wall of the frame.

[0065] In an implementable manner, the middle frame structure further comprises an inner rib; the frame and the inner rib are oppositely arranged, and the inner rib away from the inner wall of the frame surrounds a space for accommodating the back plate of the display device; there is a gap between the frame and the inner rib; the first part is connected with the inner wall of the inner rib; and the second support plate is connected with the inner wall of the inner rib. BRIEF DESCRIPTION OF DRAWINGS

[0066] FIG. 1 is a partial structure diagram of a display device in the prior art;

[0067] FIG. 2 is a structural diagram showing a light mixing distance;

[0068] FIG. 3 is a front view of a display device;

[0069] FIG. 4 is an exploded view of a display device;

[0070] FIG. 5 is an assembly diagram of a middle frame structure and a back plate of a display device provided by an embodiment of the present application;

[0071] FIG. 6 is an exploded view of a middle frame structure and a back plate of a display device provided by an embodiment of the present application;

[0072] FIG. 7 is a Q1-Q1 sectional view of FIG. 5;

[0073] FIG. 8 is a partial sectional structure schematic diagram of a display device provided by an embodiment of the present application;

[0074] FIG. 9 is a structural schematic diagram of a middle frame structure of a display device provided by an embodiment of the present application;

[0075] FIG. 10 is a partial sectional structure schematic diagram of a display device provided by an embodiment of the present application;

[0076] FIG. 11 is a structural schematic diagram of a back plate of a display device provided by an embodiment of the present application;

[0077] FIG. 12 is a structural schematic diagram of a back plate of a display device provided by an embodiment of the present application;

[0078] FIG. 13 is an enlarged view of A of FIG. 12;

[0079] FIG. 14 is an enlarged view of B of FIG. 12;

[0080] FIG. 15 is a structural schematic diagram of a back plate of a display device provided by an embodiment of the present application;

[0081] FIG. 16 is an assembly diagram of a middle frame structure and a back plate of a display device provided by an embodiment of the present application;

[0082] FIG. 17 is an assembly diagram of a middle frame structure and a back plate of a display device provided by an embodiment of the present application;

[0083] FIG. 18 is an enlarged view of C of FIG. 17;

[0084] FIG. 19 is an assembly diagram of a middle frame structure and a back plate of a display device provided by an embodiment of the present application;

[0085] FIG. 20 is an enlarged view of D of FIG. 19;

[0086] FIG. 21 is a partial sectional structure schematic diagram of a display device provided by an embodiment of the present application;

[0087] FIG. 22 is a partial cross-sectional structural schematic diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0088] Before introducing the embodiments involved in the present application, the technical term "mixing distance" involved in the present application is explained in combination with FIG. 2.

[0089] As shown in FIG. 2, the light emitted by the light source 30 is transmitted to the diffusion plate 20, and under the action of the diffusion plate 20, the light can be diffused to make the light emitted from the diffusion plate 20 more uniform and the visual effect better. In some alternative embodiments, the distance d1 between the light source 30 and the diffusion plate 20 can be referred to as the mixing distance. In some other alternative embodiments, the light source 30 is arranged on the back plate 10, and in some scenarios in the art, the light source 30 can be ignored due to its small size, so the distance d2 between the back plate 10 and the diffusion plate 20 can also be referred to as the mixing distance.

[0090] The following embodiments of the present application are described in combination with the drawings in the embodiments of the present application.

[0091] An embodiment of the present application provides a display device, which can be a television, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), a pad, a notebook computer, a vehicle-mounted mobile electronic device, and the like. The specific form of the display device is not specially limited in the embodiments of the present application.

[0092] FIG. 3 exemplarily shows a structural diagram of a display device 100 as a television, wherein the television includes a middle frame structure 101, and a display screen 102 is mounted on the middle frame structure 101. The display screen 102 here can be a liquid crystal display (LCD) panel or a self-luminous display screen. In the case where the display screen 102 is a self-luminous display screen, the display screen 102 can be, for example, an organic light-emitting diode (OLED) display screen or a quantum dot light emitting diodes (QLED) display screen. In the case where the display screen 102 is a liquid crystal display screen, the display device 100 can be referred to as a liquid crystal display device; in the case where the display screen 102 is a self-luminous display screen, the display device 100 can be referred to as a self-luminous display device.

[0093] Regardless of whether the display screen 102 is a liquid crystal display screen or a self-luminous display screen, the display screen 102 includes a display area. The display area includes a plurality of sub-pixels, which can include, for example, red (R) sub-pixels, green (G) sub-pixels, and blue (B) sub-pixels.

[0094] FIG. 4 is an exploded schematic view of a display device 100 according to an embodiment of the present application. The display device 100 includes a middle frame structure 101 and a display screen 102. In addition, the display device 100 can include a back plate 104 and a rear cover 103. The display screen 102 and the rear cover 103 are disposed on opposite sides of the middle frame structure 101. The back plate 104 serves as a skeleton and a carrier of the entire display device, and can mount most structural members and electronic components of the display device, such as a controller, a processor, a field output integrated block, a switching power supply block, a speaker, a picture tube, and various functional devices.

[0095] In some display devices, the light source and the light diffusion structure are disposed on the back plate 104. It can be understood that the back plate has a depth in the arrangement direction of the light source and the light diffusion structure, and the depth determines the light mixing distance of the display device.

[0096] If it is necessary to change the light mixing distance or the overall thickness, the back plate needs to be replaced. For example, if it is necessary to reduce the light mixing distance, the back plate with a smaller depth needs to be replaced. For example, if it is necessary to increase the light mixing distance, the back plate with a larger depth needs to be replaced.

[0097] In a manufacturable process, the back plate has a high manufacturing cost. If it is necessary to change the light mixing distance or adapt to different overall thicknesses, the back plate mold needs to be replaced, which significantly increases the manufacturing cost of the display device.

[0098] In order to make the back plate compatible with multiple different light mixing distance schemes and reduce the manufacturing cost, some manufacturable structures are provided in the present application, which are described below.

[0099] FIG. 5 is an assembly view of the back plate 104 and the middle frame structure 101 according to an embodiment of the present application, FIG. 6 is an exploded view of the back plate 104 and the middle frame structure 101 in FIG. 5, and FIG. 7 is a partial cross-sectional view along Q1-Q1 in FIG. 5.

[0100] The display device according to an embodiment of the present application includes the middle frame structure 101. As shown in FIG. 6, the middle frame structure 101 has a receiving cavity 101A formed therein, and the back plate 104 is disposed in the receiving cavity 101A. The back plate 104 is connected to the middle frame structure 101. It can be understood that the middle frame structure 101 is disposed at the edge of the back plate 104, and the middle frame structure 104 can be disposed around the periphery of the back plate 104.

[0101] As shown in FIG. 7, the display device further includes a light source 105, a light diffusion structure 106, and a display screen 102. The light source 105 is disposed on the back plate 104, the light diffusion structure 106 is located on the light exit side of the light source 105, and the display screen 102 is located on the light exit side of the light diffusion structure 106. The light diffusion structure 106 is configured to receive light emitted by the light source 105 and diffuse the light emitted by the light source 105 so that the light is more uniformly projected onto the display screen 102, thereby improving the display effect.

[0102] For example, in FIG. 7, the light source 105, the light diffusion structure 106, and the display screen 102 are arranged along the Z direction, which is the thickness direction of the display device as shown in FIG. 4.

[0103] The light diffusion structure 106 of the example of the present application is mounted on the middle frame structure 101. For example, in the example of FIG. 7, the middle frame structure 101 can include a first support plate 1012 located on the inner side of the middle frame structure 101, and the light diffusion structure 106 can be disposed on the first support plate 1012. The back plate 104, the first support plate 1012, and the light diffusion structure 106 can be arranged in sequence along a first direction (e.g., the Z direction of FIG. 7), which can be the thickness direction of the display device.

[0104] In FIG. 7, the distance between the back plate 104 and the light diffusion structure 106 can be considered as the light mixing distance d1 of the display device.

[0105] It can be understood that, in the example of the present application, the light source 105 is disposed on the back plate 104, and the light diffusion structure 106 is not disposed on the back plate 104, but is disposed on the middle frame structure 101, such as the first support plate 1012 of the middle frame structure 101.

[0106] As shown in FIG. 7 and FIG. 8, the difference between FIG. 7 and FIG. 8 is the light mixing distance. By comparing FIG. 7 and FIG. 8, when the light mixing distance is increased from d1 in FIG. 7 to d2 in FIG. 8, only the middle frame structure 101 needs to be replaced, which can be considered as re-opening a mold to design another middle frame structure 101. The back plate 104 can be used in different configurations of display device products, so that the back plate 104 can be used in different configurations of display device products. In this way, when designing different configurations of products, only the middle frame structure 101 needs to be changed, and the back plate 104 does not need to be changed, so that different light mixing distances can be compatible, the development time of different configurations of products can be shortened, and the manufacturing cost can be relatively reduced.

[0107] In some optional middle frame structures, as shown in FIG. 9, the middle frame structure 101 can include a first mounting surface and a second mounting surface, which are arranged along the thickness direction of the display device, such as along the Z direction of FIG. 8. The first mounting surface is used to fix the backboard 104 containing the light source 105, and the second mounting surface is used to fix the light diffusion structure 106. The distance between the first mounting surface and the second mounting surface can be regarded as the light mixing distance of the display device. When the light mixing distance of the display device needs to be changed, the middle frame structure can be replaced to change the distance between the first mounting surface and the second mounting surface. For example, when the light mixing distance needs to be reduced, S1 in (A) of FIG. 9 can be reduced to S2 in (B) of FIG. 9, without the need to replace the backboard 104 in FIGS. 7 and 8. Thus, on the basis of realizing the change of the light mixing distance and adapting to different models, the manufacturing cost can also be reduced.

[0108] In some display devices, after the light emitted from the light source 105 is projected onto the light diffusion structure 106, the light in the central region of the light diffusion structure 106 can be stronger than the light in the edge region, as shown in FIG. 7. The edge region Q of the light diffusion structure 106 can receive weaker light, which finally makes the light of the entire display screen 102 uneven, the display effect of the edge region of the display screen 102 is poor, and the user experience is reduced.

[0109] In order to alleviate the unevenness, as shown in FIGS. 7 and 8, the display device can further include a reflecting member 107, which can be used to reflect the light from the light source 105 to the edge region of the light diffusion structure 106. In this way, the intensity of the light in the edge region of the display screen 102 can be enhanced, and the display effect can be optimized.

[0110] In some optional structures, the reflecting member 107 can include a reflecting paper, or can be other reflecting structures.

[0111] As shown in FIGS. 7 and 8, a part of the reflecting member 107 is arranged on the backboard 104. For example, a first reflecting part 1071 of the reflecting member 107 is arranged on the surface of the backboard 104 for mounting the light source 105.

[0112] On the backboard 104, a plurality of light sources 105 can be integrated. The light sources 105 can be arranged in an array on the backboard 104. The region in which the light sources 105 are arranged can be regarded as a light source integration region. The first reflecting part 1071 of the reflecting member 107 can be arranged along the periphery of the light source integration region.

[0113] The reflecting member 107 can further include a second reflecting portion 1072 connected with the first reflecting portion 1071, the second reflecting portion 1072 extending towards the edge region of the light diffusion structure 106 for reflecting more light emitted by the light source 105 to the edge region of the light diffusion structure 106, as shown by the dashed line with arrows in FIGS. 7 and 8, the second reflecting portion 1072 reflects light to the edge region of the light diffusion structure 106.

[0114] In some structures, the second reflecting portion 1072 can be arranged along the periphery of the light source integration region to form an enclosed cavity, so as to enclose the plurality of light sources 105 in the enclosed cavity, in this way, light emitted by the light source 105 is projected onto the second reflecting portion 1072 of the reflecting member 107, and the second reflecting portion 1072 arranged along the periphery of the light source integration region can reflect more light to the light diffusion structure 106.

[0115] In some examples, as shown in FIGS. 7 and 8, the reflecting member 107 can further include a third reflecting portion 1073 connected with the second reflecting portion 1072, and the third reflecting portion 1073 can be fixed on the middle frame structure 101. By fixing the first reflecting portion 1071 on the back plate 104 and fixing the third reflecting portion 1073 on the middle frame structure 101, the installation reliability and stability of the reflecting member 107 can be improved.

[0116] In order to fix the reflecting member 107, as shown in FIGS. 7 and 8, the first support plate 1012 can include a first portion 1012A and a second portion 1012B.

[0117] The first portion 1012A is connected with the middle frame structure 101, and in some examples, the first portion 1012A can fix the light diffusion structure 106, for example, the light diffusion structure 106 can be fixedly connected with the first portion 1012A by using adhesive. The third reflecting portion 1073 of the reflecting member 107 can be fixed on the first portion 1012A.

[0118] As shown in FIGS. 7 and 8, the second portion 1012B of the first support plate 1012 extends away from the light diffusion structure 106, which can be understood as extending towards the light source 105, and the second portion 1012B fixes at least part of the second reflecting portion 1072 of the reflecting member 107, for example, in FIGS. 7 and 8, part of the second reflecting portion 1072 is fixed on the second portion 1012B.

[0119] In some display devices, as shown in FIGS. 7 and 8, the second portion 1012B for fixing the second reflecting portion 1072 is arranged obliquely, so as to effectively receive light from the light source 105 and reflect more light to the edge region of the light diffusion structure 106.

[0120] The inclination angle of the second part 1012B is associated with the light mixing distance of the display device, for example, in FIG. 7, when the light mixing distance is d1, the inclination angle of the second part 1012B is X1, when the light mixing distance increases to d2 as shown in FIG. 8, the inclination angle of the second part 1012B is X2, and the inclination angle X2 is smaller than the inclination angle X1. In this way, when the light mixing distance of the display device becomes larger, the inclination angle becomes smaller.

[0121] In some technologies, a support table can be provided on the middle frame structure, the support table has two opposite support surfaces, one of which is used to fix the light diffusion structure, and the other is used to fix the back plate, the surface connecting the two support surfaces can be provided as an inclined surface, which can be used to fix the reflection member, if the light mixing distance of the display device is large, for example, the light mixing distance is greater than or equal to 15mm, the inclination angle of the inclined surface connecting the two support surfaces is small, which will make the size of the entire support table larger, occupying more space.

[0122] However, in FIG. 7 and FIG. 8 of the examples of the present application, the first part 1012A of the first support plate 1012 supports the light diffusion structure 106, and the second part 1012B is provided as an inclined surface for supporting the reflection member 107; and the first support plate 1012 is not connected with the back plate 104. It can be understood that the back plate 104 is decoupled from the first support plate 1012, and the back plate 104 is not connected with the first support plate 1012.

[0123] The first support plate 1012 is simple in structure, when the light mixing distance changes, only the setting position of the first support plate 1012 and the inclination angle of the second part 1012B of the second support plate 1012 need to be adjusted, which can be adapted to display devices of different thicknesses. In this way, the change of the light mixing distance, such as the increase of the light mixing distance, will not cause the structure of the first support plate 1012 to become complex and the volume to become larger.

[0124] In addition, the first support plate 1012 is not connected with the back plate 104 and is decoupled, so that the position and volume of the first support plate 1012 can be decoupled from the back plate 104, making the design of the first support plate 1012 more free, such as not being constrained by the light mixing distance to have a large volume.

[0125] As shown in FIG. 7 and FIG. 8, the first support plate 1012 and the back plate 104 have a containing space 1011 therebetween, which is used to provide the light mixing distance of the display device. The containing space 1011 can include part of the light mixing distance, or can include the whole light mixing distance. That is, the whole light mixing distance falls into the containing space 1011, or part of the light mixing distance falls into the containing space 1011.

[0126] As shown in FIGS. 7 and 8, the light diffusion structure 106 is connected to the first portion 1012A, and the distance between the light diffusion structure 106 and the back plate 104 is the light mixing distance of the display device.

[0127] As shown in FIG. 9, in the middle frame structure 101, one end of the second portion 1012B of the first support plate 1012 is connected to the first portion 1012A, and the other end is suspended. That is, the second portion 1012B includes a connected end and a free end, the connected end is connected to the first portion 1012A, and the free end is suspended and not connected to other structural members. For example, the free end of the second portion 1012B is not connected to the structural member that supports the back plate 104.

[0128] The end of the second portion 1012B of the first support plate 1012 provided in the present application is suspended and not connected to other structural members. From the preparation process, the preparation process of the first support plate 1012 can be simplified, and the manufacturing cost is reduced.

[0129] In some examples, the first portion 1012A can be connected to the second portion 1012B through a connecting structure, for example, through a colloid. In other examples, the first portion 1012A and the second portion 1012B are an integral structure, that is, the first support plate 1012 is an integral molding structural member, for example, which can be integrally molded by injection molding.

[0130] As shown in FIG. 10, in this example, the first support plate 1012 is arranged on the inner side of the middle frame structure, and the second support plate 1013 can also be arranged on the inner side of the middle frame structure, the second support plate 1013 is located on the side of the back plate 104 away from the first support plate 1012; part of the back plate 104 is located between the second support plate 1013 and the first support plate 1012. The second support plate 1013 of this example can be used to fix the back plate 104.

[0131] In the example of FIG. 10, the second portion 1012B of the first support plate 1012, the suspended free end of the second portion 1012B is not connected to the second support plate 1013. That is, the second support plate 1013 for fixing the back plate 104 is decoupled from the first support plate 1012 for fixing the light diffusion structure 106, and the two support plates are two independent plate structures. In this way, the design freedom of the two plates can be increased, and they do not restrict and depend on each other.

[0132] As shown in FIG. 10, the inner side of the middle frame structure 101 further comprises a third support plate 1014, the third support plate 1014 is located between the first support plate 1012 and the second support plate 1013, and a mounting cavity 1015 is formed between the second support plate 1013 and the third support plate 1014; the edge portion of the back plate 104 is located in the mounting cavity 1015.

[0133] The second support plate 1013 and the third support plate 1014 are arranged oppositely, so that the edge of the back plate 104 can be clamped in the mounting cavity 1015 between the two support plates, and the mounting reliability and stability of the back plate 104 can be improved.

[0134] In some examples, in order to facilitate the fixation and installation of the back plate 104, as shown in FIG. 10, one end of the third support plate 1014 is connected to the inner side of the middle frame structure, and the other end extends away from the second support plate 1013. In this way, the opening of the mounting cavity 1015 can be enlarged, the insertion of the back plate 104 can be facilitated, and the assembly efficiency can be improved.

[0135] Referring to FIG. 10, the inner side of the middle frame structure can further be provided with a fourth support plate 1016, and the fourth support plate 1016 is arranged on the side of the first support plate 1012 away from the third support plate 1014. The display screen 102 can be connected to the fourth support plate 1016.

[0136] In addition, the fourth support plate 1016 is arranged oppositely to the first support plate 1012, and the edge portion of the light diffusion structure 106 can be clamped between the first support plate 1012 and the fourth support plate 1016, so that the mounting reliability and stability of the light diffusion structure 106 can be improved.

[0137] As shown in FIG. 11, FIG. 11 is a partial structure of a back plate 104 according to an example of the present application. The back plate 104 includes a first section 1041, a bending section 1043, and a second section 1042, the bending section 1043 connects the first section 1041 and the second section 1042, and the second section 1042 is farther away from the light diffusion structure 106 than the first section 1041. That is, the bending section 1043 is bent away from the light diffusion structure 106.

[0138] In some examples, the second section 1042 can be used to carry some structural members or electronic devices in the display device, for example, a controller, a processor, a field output integrated block, a switching power supply block, and a speaker functional device can be installed.

[0139] By using the bending section 1043, the strength of the back plate 104 can be improved, and the reliability of the back plate can be improved.

[0140] In order to further increase the strength of the back plate, in combination with FIG. 10 and FIG. 11, the edge portion of the back plate 104 includes a bending portion, for example, the first section 1041 of the back plate includes a bending portion, and the bending portion can be bent by 180°.

[0141] In some processes, the bending angle of the bending portion can have a tolerance, for example, the bending portion can be bent by 170° to 180°.

[0142] FIG. 12 is a structural diagram of a back plate 104 according to an embodiment of the present application, FIG. 13 is an enlarged view of A in FIG. 12, FIG. 14 is an enlarged view of B in FIG. 12, and FIG. 15 is a Q2-Q2 sectional view of FIG. 13.

[0143] In order to improve the strength of the back plate 104, at least one reinforcing rib 1044 can be arranged on the back plate 104, for example, a plurality of reinforcing ribs 1044 can be arranged on the back plate 104. The plurality of reinforcing ribs 1044 can be arranged on the back plate 104 in a spaced manner.

[0144] For example, in FIG. 13, in the Y extension direction of the back plate 104, the plurality of reinforcing ribs 1044 are arranged in the Y extension direction in a spaced manner.

[0145] For another example, in FIG. 14, in the X extension direction of the back plate 104, the plurality of reinforcing ribs 1044 are arranged in the X extension direction in a spaced manner.

[0146] The arrangement position of the reinforcing rib 1044 on the back plate can have various implementation manners. For example, in FIG. 15, the reinforcing rib 1044 can be arranged at a position of the second section 1042 of the back plate close to the bending section 1043, so as to further improve the mechanical strength of the back plate 104.

[0147] In the example of the present application, as shown in FIG. 16, FIG. 16 shows a connection relationship diagram of the back plate 104 and the middle frame structure. The second support plate 1013 arranged on the inner side of the middle frame structure can include a third part 10131, a bending part 10133 and a fourth part 10132, the bending part 10133 connects the third part 10131 and the fourth part 10132, and the fourth part 10132 is farther away from the light diffusion structure than the third part 10131. That is, the bending part 10133 is bent away from the light diffusion structure 106.

[0148] The positional relationship between the back plate and the second support plate can be that, as shown in FIG. 16, the first section 1041 can be arranged opposite to the third part 10131, the bending section 1043 can be arranged opposite to the bending part 10133, and the second section 1042 can be arranged opposite to the fourth part 10132.

[0149] In some structures, the fourth part 10132 and the second section 1042 can be fixedly connected through a connecting structure, so as to fixedly connect the back plate and the second support plate. For example, the fourth part 10132 and the second section 1042 can be connected through a threaded connecting piece.

[0150] To improve the connection strength between the back plate and the second support plate, as shown in FIG. 16, the threaded connecting piece 108 can pass through the fourth portion 10132, the reinforcing rib 1044 and the second section 1042. Due to the position of the reinforcing rib, the back plate has a thicker thickness, which can improve the connection strength between the back plate and the second support plate.

[0151] As shown in FIG. 16, in an example in which the second support plate 1013 includes a third portion 10131, a bending portion 10133 and a fourth portion 10132, the first section 1041 of the back plate can be located between the third portion 10131 and the third support plate 1014.

[0152] In the structure that can be implemented by the second support plate 1013, the fourth portion 10132 can include multiple, as shown in FIG. 17 and FIG. 18, which is an enlarged view of C in FIG. 17. In this example, multiple fourth portions 10132 are included, and the multiple fourth portions 10132 can be arranged at intervals along the extension direction of the outer edge of the middle frame structure. As shown in FIG. 18, the multiple fourth portions 10132 are arranged at intervals along the Y direction.

[0153] To improve the assembly efficiency of the back plate and the middle frame structure, or to improve the connection strength between the back plate and the middle frame structure, some structures are further provided in the embodiments of the present application.

[0154] For example, a clamping structure can be arranged at the matching position of the back plate and the middle frame structure. When assembling the back plate and the middle frame structure, the clamping structure can be used for pre-assembly, and then the threaded connecting piece 108 of the above example of FIG. 16 can be used to fixedly connect the back plate and the middle frame structure.

[0155] As shown in FIG. 19 and FIG. 20, which is an enlarged view of D in FIG. 19. The clamping structure 110 in this example can include a clamping groove 1101 and a clamping buckle 1102, one of which is arranged on the back plate and the other of which is arranged on the middle frame structure. For example, as shown in FIG. 20, the clamping groove 1101 can be formed on the second support plate of the middle frame structure, such as on the fourth portion 10132 of the second support plate, and the clamping buckle 1102 can be arranged on the second section 1042 of the back plate.

[0156] In some assembly processes, the middle frame structure 101 can be pushed along the P direction shown in FIG. 20. During the pushing process, the clamping buckle 1102 can be elastically deformed to be clamped in the clamping groove 1101, thereby realizing the pre-assembly of the back plate and the middle frame structure.

[0157] In some display devices, the clamping structure 110 of FIG. 20 can include multiple groups, and the multiple groups of clamping structures 110 can be arranged at intervals along the extension direction of the edge of the back plate, such as along the X direction and the Y direction shown in FIG. 19.

[0158] In some implementations, the card slot 1101 can be arranged on the second section 1042 of the back plate, and the clasp 1102 can be arranged on the fourth portion 10132 of the second support plate of the middle frame structure.

[0159] In the examples of the present application, a limiting structure can be arranged at the matching position of the back plate and the middle frame structure. The limiting structure can prevent the back plate from moving in some directions relative to the middle frame structure, thereby improving the connection reliability of the back plate and the middle frame structure.

[0160] As shown in FIG. 20, the limiting structure 109 of the example is used to prevent the back plate from moving in a second direction relative to the middle frame structure, the second direction being parallel to the extension direction of the edge of the back plate, for example, the limiting structure 109 is used to prevent the back plate from moving in the Y direction relative to the middle frame structure, or is used to prevent the back plate from moving in the X direction relative to the middle frame structure.

[0161] As shown in FIG. 20, the limiting structure 109 can include a limiting column 1091 and a limiting slot 1092. The limiting slot 1092 can be arranged on the middle frame structure, for example, on the fourth portion 10132 of the second support plate, and the opening of the limiting slot 1092 penetrates the edge of the fourth portion 10132. The limiting column 1091 is arranged on the second section 1042 of the back plate.

[0162] Since the opening of the limiting slot 1092 penetrates the edge of the fourth portion 10132, when assembling the back plate and the middle frame structure, the middle frame structure 101 can be pushed in the P direction shown in FIG. 20, and the limiting column 1091 can be inserted into the limiting slot 1092 to prevent the back plate from moving in the X direction or the Y direction relative to the middle frame structure.

[0163] As shown in FIG. 20, the limiting structure 109 and the clasp structure 110 of the examples of the present application can be arranged at intervals along the extension direction of the edge of the back plate.

[0164] The display device provided by the present application has a variety of structures that can be implemented. As shown in FIG. 21, FIG. 21 shows a structural schematic diagram of a middle frame structure 101. In the example, the middle frame structure 101 includes a frame 101B, which can be a strip-shaped plate structure. The frame 101B has opposite outer walls and inner walls, and the inner walls can enclose a space for accommodating the back plate 104. The one end of the first support plate 1012 is connected to the inner wall of the frame 101B, and the one end of the second support plate 1013 is connected to the inner wall of the frame 101B.

[0165] It can be understood that the one end of the first support plate 1012 is directly connected to the inner wall of the frame 101B, and the one end of the second support plate 1013 is directly connected to the inner wall of the frame 101B. In this way, the frame size of the display device can be thinned, and the appearance aesthetics of the display device can be optimized.

[0166] As shown in FIG. 21, the first support plate 1012, the second support plate 1013 and the frame 101B can be an integrally formed structure, for example, can be integrally formed by an injection molding process.

[0167] FIG. 22 is a partial structure diagram of another display device according to an embodiment of the present application. In this implementation, the inner side of the middle frame structure 101 is provided with a first support plate 1012. The light source 105 is arranged on the back plate 104, and the light diffusion structure 106 is arranged on the first support plate 1012.

[0168] For example, the first support plate 1012 includes a first portion 1012A and a second portion 1012B, the light diffusion structure 106 can be connected with the first portion 1012A, and the second portion 1012B can fix the reflector 107.

[0169] In this example, the first portion 1012A of the first support plate 1012 supports the light diffusion structure 106, and the second portion 1012B is arranged obliquely to support the reflector 107; and the first support plate 1012 is not connected with the back plate 104, and is decoupled, so that the back plate 104 can be decoupled from the position and volume of the first support plate 1012, so that the design of the first support plate 1012 is more free, for example, the volume is not large due to the constraint of the mixing distance.

[0170] Continuing to FIG. 22, the inner side of the middle frame structure 101 is also provided with a second support plate 1013, and the back plate 104 can be fixedly connected with the second support plate 1013. Moreover, the end of the second portion 1012B of the first support plate 1012 away from the first portion 1012A is not connected with the second support plate 1013, but is in a suspended state.

[0171] In some structures, the second support plate 1013 can be fixedly connected with the back plate 104 by a threaded connection.

[0172] In the example of FIG. 22, the middle frame structure 101 includes the frame 101B and the inner rib 101C, and the frame 101B and the inner rib 101C are oppositely arranged, and the inner wall of the inner rib 101C away from the frame 101B surrounds a space for accommodating the back plate 104. One end of the first support plate 1012 is connected with the inner wall of the inner rib 101C, and one end of the second support plate 1013 is connected with the inner wall of the inner rib 101C.

[0173] The frame 101B and the inner rib 101C have a gap therebetween, and the edge portion of the back plate 104 can extend into the gap. For example, the edge portion of the back plate 104 can be bent at 90°, and the bent portion can be inserted into the gap.

[0174] As shown in FIG. 22, the first support plate 1012, the second support plate 1013, the frame 101B, and the inner rib 101C can be an integrally formed structure, for example, can be integrally formed by an injection molding process.

[0175] In the different display devices of the above examples, the setting positions of the light source and the light diffusion structure are decoupled, the light source is arranged on the back plate, and the light diffusion structure is arranged on the middle frame structure. In this way, the back plate can be compatible with devices with different mixing distances, and the manufacturing cost of the device can be reduced.

[0176] The structure of the first support plate for fixing the light diffusion structure is relatively simple. When the mixing distance changes the size of the middle frame structure, the size of the middle frame structure will not become larger, and the size of the first support plate will not become larger, and the first support plate will not occupy more space inside the display device.

[0177] In the description of the present specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0178] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A display device, characterized by comprising: The display device comprises: a middle frame structure and a back plate, the middle frame structure being arranged at the edge of the back plate; a light source and a light diffusion structure, the light source being arranged on the back plate, and the light diffusion structure being located on the light emitting side of the light source; a reflection member; an inner side of the middle frame structure is provided with a first support plate, the back plate, the first support plate and the light diffusion structure are sequentially arranged in a first direction, the first direction being the thickness direction of the display device, and the light diffusion structure is connected with the first support plate; the first support plate comprises a first part and a second part, the second part extends away from the light diffusion structure, and the second part fixes the reflection member; the first support plate is not connected with the back plate.

2. The display device according to claim 1, wherein a containing space is arranged between the first support plate and the back plate, and the containing space is used to provide the light mixing distance of the display device.

3. The display device according to claim 1 or 2, wherein the light diffusion structure is connected with the first part, and the distance between the light diffusion structure and the back plate is the light mixing distance of the display device.

4. The display device according to any one of claims 1 to 3, wherein one end of the second part is connected with the first part, and the other end is suspended.

5. The display device according to any one of claims 1-4, wherein an inner side of the middle frame structure is provided with a second support plate, the second support plate being located on the side of the back plate away from the first support plate; the back plate is connected with the second support plate.

6. The display device according to claim 5, wherein the end of the second part away from the first part is not connected with the second support plate.

7. The display device according to claim 5 or 6, wherein an inner side of the middle frame structure is provided with a third support plate; the third support plate is located between the first support plate and the second support plate, and a mounting cavity is formed between the second support plate and the third support plate; an edge part of the back plate is located in the mounting cavity.

8. The display device according to claim 7, wherein one end of the third support plate is connected with the inner side of the middle frame structure, and the other end extends away from the second support plate.

9. The display device according to any one of claims 5 to 8, wherein the edge of the back plate comprises a bending part, and the bending part is bent by 180°.

10. The display device according to claim 9, wherein the back plate comprises a first segment, a bending segment and a second segment, the bending segment connects the first segment and the second segment, and the second segment is farther away from the light diffusion structure than the first segment; the first segment comprises the bending part.

11. The display device according to claim 10, wherein the second support plate comprises a third segment, a bending segment and a fourth segment, the bending segment connects the third segment and the fourth segment, and the fourth segment is farther away from the light diffusion structure than the third segment; the first segment is located between the third segment and the first segment; the second segment is connected with the fourth segment.

12. The display device according to claim 10 or 11, characterized by the second segment of the back plate is provided with at least one reinforcing rib.

13. The display device of claim 12, wherein, the second segment of the back plate is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are arranged at intervals along the extension direction of the edge of the back plate.

14. The display device of claim 11, wherein, the second segment of the back plate and the fourth segment of the second support plate are provided with clamping structures, and the clamping structures connect the middle frame structure and the back plate.

15. The display device of claim 14, wherein, The clamping structure comprises a clamping groove and a clamping buckle, one of which is arranged on the second section of the back plate, and the other is arranged on the fourth part of the second support plate.

16. A display device according to any one of claims 11, 14 or 15, wherein, The second section of the back plate and the fourth part of the second support plate are provided with a limiting structure for preventing the back plate from moving relative to the middle frame structure in a second direction, which is parallel to the extension direction of the edge of the back plate.

17. The display device of claim 16, wherein, The limiting structure comprises a limiting column and a limiting groove, the limiting groove is arranged on the fourth part of the second support plate, and the opening of the limiting groove penetrates through the edge of the fourth part, and the limiting column is arranged on the second section of the back plate.

18. The display device according to any one of claims 5-17, wherein The middle frame structure comprises a frame, the frame has an outer wall and an inner wall, and the inner wall encloses a space for accommodating the back plate; The first part is connected with the inner wall of the frame; The second support plate is connected with the inner wall of the frame.

19. The display device according to any one of claims 5-17, wherein The middle frame structure comprises a frame and an inner rib, the frame and the inner rib are arranged opposite to each other, and the inner rib encloses a space for accommodating the back plate away from the inner wall of the frame; There is a gap between the frame and the inner rib; The first part is connected with the inner wall of the inner rib; The second support plate is connected with the inner wall of the inner rib.

20. The display device according to claim 19, wherein The back plate is located on the side of the second support plate away from the first support plate, and the edge part of the back plate extends into the gap.

21. The display device of any one of claims 1-20, wherein, The reflector is an integral structure, one part of the reflector is fixed on the back plate, and the other part is fixed on the second part. 22.A middle frame structure used in a display device, characterized in that, The middle frame structure comprises: a frame; a first support plate arranged on the inner side of the frame; The first support plate comprises a first part and a second part, the first part is used for fixing a light diffusion structure in the display device, the second part extends away from the light diffusion structure, the second part is used for fixing a reflector in the display device, one end of the second part is connected with the first part, and the other end is suspended.

23. The middle frame structure of claim 22, wherein, The middle frame structure further comprises a second support plate arranged on the inner side of the frame; The second support plate is used for fixing a back plate in the display device; The end of the second part away from the first part is not connected with the second support plate.

24. The middle frame structure of claim 23, wherein, The middle frame structure further comprises a third support plate arranged on the inner side of the frame; The third support plate is located between the first support plate and the second support plate, and a mounting cavity is formed between the second support plate and the third support plate, the mounting cavity is used for accommodating an edge part of the back plate of the display device.

25. The middle frame structure of claim 23 or 24, wherein, The frame has an outer wall and an inner wall, and the inner wall encloses a space for accommodating the back plate of the display device; The first part is connected with the inner wall of the frame; The second support plate is connected with the inner wall of the frame.

26. The middle frame structure of claim 25, wherein the second support plate comprises a third portion, a bent portion, and a fourth portion, the bent portion connecting the third portion and the fourth portion, the fourth portion being farther away from the first support plate than the third portion. The third portion is connected with an inner wall of the bezel. The middle frame structure further comprises an inner rib.

27. The middle frame structure of claim 23 or 24, wherein, The bezel and the inner rib are oppositely arranged, and the inner rib surrounds a space for accommodating a back plate of the display device away from the inner wall of the bezel. There is a gap between the bezel and the inner rib. The first portion is connected with an inner wall of the inner rib. The second support plate is connected with an inner wall of the inner rib. ​

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