Fixing frame, backlight module and display device

Abstract

The utility model provides a fixing frame, a backlight module and a display device, the fixing frame comprises a frame, the frame comprises a first fixing section and a second fixing section, the inner surface of the first fixing section is provided with a first reflecting surface, the inner surface of the second fixing section is provided with a second reflecting surface, and a gap is formed between the first reflecting surface and the second reflecting surface; and the reflecting piece is shielded on the gap to form a continuous reflecting interface. The fixing frame can solve the problem of edge display defects of a narrow frame.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a mounting bracket, a backlight module, and a display device. Background Technology

[0002] In the field of display technology, existing solutions suffer from the following technical problems: Given that the width W of the light-shielding area (BM area) in current mainstream display modules is generally maintained at around 6mm, its screen-to-body ratio is significantly constrained. In the assembly structure of the backlight module and the liquid crystal module, the back panel bending area needs to overlap with the BM area to shield internal components, and is fixed by double-sided adhesive. However, when the BM area width is reduced to a critical size (e.g., less than 4mm) towards narrower bezels, this design leads to the following defects: On the one hand, the boundary control between the light-shielding structure and the effective display area (AA area) becomes more difficult, causing some pixel units to be blocked by the light-shielding layer, forming dark areas; on the other hand, surface defects (such as scratches and wrinkles) in the back panel bending area are directly reflected onto the display interface due to the lack of effective shielding, reducing visual quality. To improve edge display uniformity, existing technologies use support structures such as frames to elevate the liquid crystal module, compensating for brightness attenuation by adjusting the reflection / transmission path of light at the module edge.

[0003] However, as display devices become larger, the frame, due to limitations in material molding processes, requires a segmented splicing design, resulting in seams that create discontinuous reflective interfaces. Specifically, light emitted from the backlight source undergoes total internal reflection on the inner surface of the frame before being directed to the liquid crystal module. The vertical discontinuity in the seam area causes light scattering and escape, resulting in dark lines in the corresponding display area of ​​the liquid crystal module that precisely correspond to the seam of the frame. This shadow phenomenon not only disrupts the continuity of the displayed image but also causes a local brightness decrease of approximately 15% to 20%, becoming a key technical bottleneck restricting the optical performance of large-size, high-precision display devices. Utility Model Content

[0004] This application provides a mounting bracket, a backlight module, and a display device. The mounting bracket can solve the problem of edge display defects in narrow bezels.

[0005] This application provides a fixing frame, including:

[0006] The frame includes a first fixed section and a second fixed section, the inner surface of the first fixed section has a first reflective surface, the inner surface of the second fixed section has a second reflective surface, and a gap is formed between the first reflective surface and the second reflective surface;

[0007] A reflector that blocks the gap.

[0008] In some embodiments, a first recessed step is provided at one end of the first fixed segment near the second fixed segment, and at least a portion of the structure of the reflector is embedded in the first recessed step.

[0009] In some embodiments, the absolute value of the difference between the depth of the first recessed step and the thickness of the reflector is less than or equal to 2 mm.

[0010] In some embodiments, a second recessed step is provided at one end of the second fixed segment near the first fixed segment, and at least a portion of the structure of the reflector is embedded in the second recessed step.

[0011] In some embodiments, the side of the reflector away from the frame is a third reflective surface. The third reflective surface has a bottom edge, a first side edge, and a second side edge. The first side edge and the second side edge are disposed opposite to each other. Both the first side edge and the second side edge are connected to the bottom edge. The extension direction of the bottom edge of the third reflective surface is the same as the length direction of the frame. The orthographic projection of the first side edge onto the frame is located within the first fixed segment, and the orthographic projection of the second side edge onto the frame is located within the second fixed segment.

[0012] In some embodiments, the angle between the bottom edge and the first side edge is 80° to 90°; or, the angle between the bottom edge and the first side edge is 110° to 145°.

[0013] In some embodiments, the third reflecting surface is provided with an optical microstructure layer, the optical microstructure layer including periodically arranged grooves or prism units for directional control of incident light.

[0014] In some embodiments, the frame includes a first support portion and a second support portion, the first support portion having a first supporting surface; the second support portion being connected to the first supporting surface of the first support portion; the first support portion further having an inclined surface, the inclined surface including a first reflective surface and a second reflective surface, the inclined surface being connected to the first supporting surface, and the inclined surface being inclined from the first supporting surface toward the inner side of the frame.

[0015] This application embodiment also provides a backlight module, including:

[0016] A back plate, the back plate including a main body and an extension, the extension and the main body forming a receiving groove;

[0017] A diffuser plate, which overlaps within the receiving groove;

[0018] A fixing frame, wherein the fixing frame is the aforementioned fixing frame, the frame of the fixing frame is connected to the side of the extension away from the main body, and the inner surface of the frame is provided with a groove;

[0019] A diaphragm assembly that overlaps within the groove.

[0020] This application embodiment also provides a display device, including:

[0021] Backlight module, wherein the backlight module is the aforementioned backlight module;

[0022] A liquid crystal module is disposed opposite to the backlight module, and the liquid crystal module is connected to the side of the mounting bracket away from the back plate.

[0023] The mounting bracket, backlight module, and display device provided in this application embodiment include a frame and a reflective element. The inner surface of the frame is a reflective surface. The frame includes a first fixing section and a second fixing section. The inner surface of the first fixing section has a first reflective surface, and the inner surface of the second fixing section has a second reflective surface. A gap is formed between the first and second reflective surfaces. The reflective element blocks the gap, forming a continuous reflective interface so that light can be reflected according to the designed light path, ensuring effective light utilization, avoiding the occurrence of dark line defects, and thus significantly improving the display uniformity and overall optical efficiency of the display device, thereby solving the problem of edge display defects in narrow bezels. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the structure of a display module provided by the prior art.

[0026] Figure 2 This is a schematic diagram of the structure of the fixing frame provided in an embodiment of this application.

[0027] Figure 3 This is a schematic diagram of the first structure of the framework provided in the embodiments of this application.

[0028] Figure 4 This is a schematic diagram of a first structure of a reflector provided in an embodiment of this application.

[0029] Figure 5 This is a schematic diagram of a second structure of the reflector provided in an embodiment of this application.

[0030] Figure 6 This is a schematic diagram of a third structure of the reflector provided in an embodiment of this application.

[0031] Figure 7 This is a schematic diagram of a second structure of the framework provided in an embodiment of this application.

[0032] Figure 8 This is a schematic diagram of the backlight module provided in an embodiment of this application.

[0033] Figure 9 This is a schematic diagram of the structure of the display device provided in the embodiments of this application. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0035] Please see Figure 1 , Figure 1 A schematic diagram of the structure of a display module provided by the prior art.

[0036] In the field of display technology, existing technical solutions have the following technical problems: Given that the width W of the light-shielding area (BM area) in the current mainstream display module 30 is generally maintained at around 6mm, its screen-to-body ratio is significantly constrained. In the assembly structure of the backlight module and the liquid crystal component 35, the back panel bending area 32 needs to overlap with the BM area to shield the internal components, and is fixed by bonding with double-sided adhesive 33. However, when the width of the BM area is reduced to a critical size (such as less than 4mm) in the direction of narrow bezel, this design will lead to the following defects: On the one hand, the boundary control between the light-shielding structure 34 and the effective display area (AA area) becomes more difficult, causing some pixel units to be blocked by the light-shielding layer, forming dark areas in the display; on the other hand, surface defects (such as scratches and wrinkles) of the back panel bending area 32 are directly reflected to the display interface due to the lack of effective shielding, reducing visual quality. To improve edge display uniformity, existing technologies use support structures such as frames to raise the liquid crystal component 35, and compensate for brightness attenuation by adjusting the reflection / transmission path of light at the edge of the module.

[0037] However, as display devices become larger, the frame, due to limitations in material molding processes, requires a segmented splicing design, resulting in seams that create discontinuous reflective interfaces. Specifically, light emitted from the backlight source undergoes total internal reflection on the inner surface of the frame before being directed to the liquid crystal module. The vertical discontinuity in the seam area causes light scattering and escape, resulting in dark lines in the corresponding display area of ​​the liquid crystal module that precisely correspond to the seam of the frame. This shadow phenomenon not only disrupts the continuity of the displayed image but also causes a local brightness decrease of approximately 15% to 20%, becoming a key technical bottleneck restricting the optical performance of large-size, high-precision display devices.

[0038] In existing technologies, especially in narrow-bezel display devices, the frame is divided into multiple independent segments and fixed by mechanical connections, creating unavoidable seams between the segments. In the optical path design, some of the light emitted by the backlight module needs to be reflected by the inner surface of the frame before being guided to the light-emitting surface of the liquid crystal module. However, the non-reflective interfaces at the gaps between the segments cause light to leak in that area without effective reflection.

[0039] When the display device is in operation, the gaps mentioned above cannot participate in normal optical path coupling, resulting in the light intensity emitted by the corresponding liquid crystal module being significantly lower than that of the surrounding area. This causes dark pattern defects on the display screen that correspond to the segmented structure of the frame, severely reducing display uniformity and overall optical efficiency.

[0040] This application provides a mounting bracket, a backlight module, and a display device. The mounting bracket can solve the problem of edge display defects in narrow bezels. The following is a detailed description with reference to the accompanying drawings.

[0041] This application provides a mounting bracket 1, which can be referred to as a plastic frame in the embodiment. The mounting bracket 1 can be a composite structure with support and optical control functions, and can be injection molded from a high-reflectivity material (such as PC / PMMA alloy). In the display device 100, it serves as a key load-bearing component of the backlight module 10. The mounting bracket 1 needs to meet certain mechanical strength, dimensional stability, and optical performance requirements, such as mechanical strength (impact resistance ≥50G), dimensional stability (coefficient of thermal expansion ≤60ppm / ℃), and optical performance (total reflectivity >90%).

[0042] Please see Figure 2 as well as Figure 3 , Figure 2 This is a schematic diagram of the structure of the fixing frame provided in the embodiment of this application. Figure 3This is a schematic diagram of a first structural embodiment of the frame provided in this application. The fixing frame 1 includes a frame 11 and a reflective element 12. The inner surface of the frame 11 is a reflective surface. The frame 11 includes a first fixing segment 111 and a second fixing segment 112, which are spliced ​​together to form a seam. During assembly, the first fixing segment 111 and the second fixing segment 112 are linearly connected, extending along the length direction within a preset plane to complete the splicing.

[0043] Please continue reading. Figure 2 The first fixed segment 111 and the second fixed segment 112 together constitute the main body of the frame 11, and are spliced ​​together during assembly. The reflective surface includes a first reflective surface 1111 and a second reflective surface 1121. The inner surface of the first fixed segment 111 has the first reflective surface 1111, and the inner surface of the second fixed segment 112 has the second reflective surface 1121. Both the first reflective surface 1111 and the second reflective surface 1121 are used to reflect light to achieve a supporting function and optical control function. Since the first fixed segment 111 and the second fixed segment 112 are spliced ​​together, a gap 110 is formed between them.

[0044] The reflector 12 blocks the gap 110 and is connected to the first fixed section 111 and the second fixed section 112. The reflector 12 overlaps the first reflective surface 1111 of the first fixed section 111 and the second reflective surface 1121 of the second fixed section 112, forming a continuous reflective interface. For example, the reflector 12 can be attached to the first fixed section 111 and the second fixed section 112 with double-sided tape. The reflector 12 eliminates the non-reflective area at the gap 110, so that light passing through this area can be effectively reflected to the light-emitting surface of the liquid crystal module 20 as if it were passing through a reflective surface.

[0045] For example, in the actual optical path, the light emitted by the light source of the backlight module 10 might originally be scattered and leaked at the gap 110, resulting in a reduction in the emitted light intensity of the corresponding liquid crystal module 20. However, with the continuous reflective interface formed by the reflector 12, the light can be reflected according to the designed optical path, ensuring the effective use of light and avoiding the occurrence of dark pattern defects, thereby significantly improving the display uniformity and overall optical efficiency of the display device 100.

[0046] The reflector 12 and the frame 11 can be made of the same material, such as a high-reflectivity material. Using the same material ensures that they have similar expansion or contraction characteristics when the temperature changes, maintaining a stable relative position and thus guaranteeing the stability and reliability of the optical system. The reflector 12 can be manufactured using a vacuum forming process, which can produce reflectors 12 with complex shapes and high precision. By precisely designing the shape and size of the mold, reflectors 12 with various curved surfaces and fine structures can be manufactured to meet the needs of different optical systems. Furthermore, the reflector 12 can be manufactured to mimic the shape of the frame 11. A reflector 12 manufactured to mimic the shape of the frame 11 can better fit the frame 11, enhancing the connection strength and stability between the reflector 12 and the frame 11. For example, when the edge shape of the reflector 12 matches the inner wall shape of the frame 11, the reflector 12 can be firmly fixed to the frame 11 by means of snapping, gluing, or welding, preventing the reflector 12 from loosening or shifting during the operation of the optical system and ensuring that the reflection path of light remains stable.

[0047] If the reflector 12 is simply placed on the gap 110, the light reflection effect may be poor due to insecure installation or poor fit with the fixed section. In some cases, the reflector 12 may even shift, which will affect the display uniformity and optical efficiency of the display device 100.

[0048] A first recessed step 1112 is provided at one end of the first fixed section 111 near the second fixed section 112. The first recessed step 1112 is a structural recessed design, which provides space for the installation of the reflector 12, so that the reflector 12 can be better combined with the first fixed section 111 and the second fixed section 112 to form a continuous reflective interface.

[0049] Correspondingly, at least a portion of the structure of the reflector 12 is embedded in the first recessed step 1112, so that a more stable connection is formed between the reflector 12 and the first fixed section 111, so that the reflector 12 can fit tightly on the first fixed section 111, reducing the risk of light leakage caused by loosening or displacement.

[0050] To ensure the proper functioning of the reflector 12 and its optimal optical coordination with the first fixed section 111 and the second fixed section 112, the relationship between the depth of the first recessed step 1112 and the thickness of the reflector 12 is strictly defined. If the difference between the depth of the first recessed step 1112 and the thickness of the reflector 12 is too large, it will cause another step to form between the reflector 12 and the first reflecting surface 1111. When light passes through this step, scattering and refraction occur, preventing effective reflection along the designed optical path. This reduces light utilization and may result in defects such as light spots and dark lines on the displayed image, severely impacting display quality.

[0051] Correspondingly, there is a step difference between the first fixed segment 111 and the second fixed segment 112, so that in the above-described case, the end of the reflector 12 furthest from the first fixed segment 111 can directly overlap the second fixed segment 112, ensuring that the reflector 12 maintains a good fit with the fixed segments throughout its length. From an optical principle perspective, this continuous fit minimizes light loss and interference, ensuring a more stable and accurate light reflection path. In actual manufacturing, by precisely controlling the step difference between the first fixed segment 111 and the second fixed segment 112, as well as the dimensions of the reflector 12, a seamless connection between the reflector 12 and the two fixed segments can be ensured, further improving the performance and reliability of the optical system.

[0052] In some embodiments, the absolute value of the difference between the depth of the first recessed step 1112 and the thickness of the reflector 12 is less than or equal to 2 mm. That is, in some cases, the depth of the first recessed step 1112 is greater than the thickness of the reflector 12, and in other cases, the depth of the first recessed step 1112 is less than the thickness of the reflector 12. In this case, part of the structure of the reflector 12 protrudes from the first recessed step 1112, and the protruding part can engage with the corresponding structure on the second fixing section 112, increasing the fixing force of the reflector 12 at the gap 110 and preventing the reflector 12 from shifting during long-term use. In other cases, the depth of the first recessed step 1112 is equal to the thickness of the reflector 12, so that the reflector 12 can be stably and firmly installed on the first fixing section 111. From a mechanical structure perspective, the perfect fit ensures that the reflector 12 will not shake or shift when subjected to external forces, improving the overall stability of the fixing frame 1. In terms of optics, there is no protruding part between the first reflecting section and the reflector 12, which enables seamless reflection of light between the reflector 12 and the first reflecting surface 1111 of the first fixed section 111, reducing light scattering and refraction and improving light utilization.

[0053] Please continue reading. Figure 3A second recessed step is provided at the end of the second fixed segment 112 near the first fixed segment 111. The second recessed step is located at the end of the second fixed segment 112 near the first fixed segment 111, and is manifested as a partial downward indentation on the surface of the second fixed segment 112, forming a stepped area. At least a portion of the structure of the reflector 12 is embedded in the second recessed step, thereby forming a more stable connection between the reflector 12 and the second fixed segment 112. This allows the reflector 12 to fit tightly against the second fixed segment 112, reducing the risk of light leakage due to loosening or displacement.

[0054] From a mechanical perspective, the first and second recessed steps 1112 provide stable support for the reflector 12. When the device is subjected to external forces, the force borne by the reflector 12 is evenly transmitted to the first and second fixed sections 111 and 112 through the embedded portion. The reflector 12 needs to maintain precise position and angle to ensure the accuracy of the optical path. Part of the structure of the reflector 12 is embedded in the first and second recessed steps, so that the reflector can remain stable under the support of the recessed steps when subjected to vibration or external impact, avoiding optical path deviation due to shaking.

[0055] From an optical perspective, when the depth of the first recessed step 1112 is equal to the thickness of the reflector 12 located within the first recessed step 1112, and the depth of the second recessed step is equal to the thickness of the reflector 12 located within the second recessed step, there are no protruding parts between the first recessed step 1112, the second recessed step, and the reflector 12. This allows light to be seamlessly reflected between the reflector 12, the first reflecting surface 1111, and the second reflecting surface 1121, reducing light scattering and refraction and improving light utilization.

[0056] Please see Figure 4 , Figure 4 This is a schematic diagram of a first structure of a reflector provided in an embodiment of this application.

[0057] The side of the reflector 12 furthest from the frame 11 is a third reflecting surface 121. The shape and optical properties (such as reflectivity and surface roughness) of the third reflecting surface 121 play a decisive role in the light reflection effect. The third reflecting surface 121 has a bottom edge 1211, a first side edge 1212, and a second side edge 1213. The first side edge 1212 and the second side edge 1213 are arranged opposite to each other and are both connected to the bottom edge 1211. The extension direction of the bottom edge 1211 of the third reflecting surface 121 is the same as the length direction of the frame 11. The orthographic projection of the first side edge 1212 onto the frame 11 is located within the first fixed section 111, and the orthographic projection of the second side edge 1213 onto the frame 11 is located within the second fixed section 112. During manufacturing and assembly, the reflector 12 can be accurately installed onto the frame 11 based on the projection positions of the first side edge 1212 and the second side edge 1213 within the fixed section. For example, on an automated assembly line, by using optical sensors to detect the projection positions of the first side 1212 and the second side 1213 within a fixed section, the reflector 12 can be installed quickly and accurately, improving production efficiency and product quality.

[0058] The bottom edge 1211 of the third reflecting surface 121 can overlap with the edge of the frame 11 along its length. This overlapping design not only enhances the tightness of the connection between the reflector 12 and the frame 11, but also provides a more precise positioning reference for the mounting of the reflector 12 on the frame 11. When light is incident on the third reflecting surface 121, the direction of the bottom edge 1211 can accurately guide the incident and reflection angles of the light, ensuring that the light propagates along a predetermined path, thereby improving the imaging quality and resolution of the optical system.

[0059] The third reflective surface 121 also has a top edge 1214, which is positioned opposite to the bottom edge 1211. The top edge 1214 is connected to the first side edge 1212 and the second side edge 1213, respectively. The top edge 1214 can be parallel to the bottom edge 1211. This parallel relationship helps maintain the shape stability of the third reflective surface 121 and reduces light reflection deviation caused by shape deformation. From an optical perspective, the presence of the top edge 1214 further improves the optical characteristics of the third reflective surface 121. It, together with the other three sides, constitutes the boundary conditions for light reflection, changing the propagation path and reflection direction of the light.

[0060] In different application scenarios, the angle between the bottom edge 1211 and the first side edge 1212 presents a variety of designs.

[0061] In some cases, please refer to Figure 4When the reflector 12 is positioned in the middle of the frame 11, the light emitted by the light source is uniformly distributed across the reflector 12, allowing it to exhibit an approximately symmetrical structure. This approximately symmetrical structure offers unique advantages, enabling more uniform and stable light reflection. For example, the angle α between the bottom edge 1211 and the first side edge 1212 is 80° to 90°; the angle β between the bottom edge 1211 and the second side edge 1213 is also 80° to 90°. This symmetrical angle design ensures high uniformity of the third reflecting surface 121 during light reflection. In optical systems requiring uniform light reflection, such as uniform illumination systems, this approximately symmetrical third reflecting surface 121 can uniformly reflect incident light in all directions, resulting in a more uniform distribution of light intensity in the illuminated area and avoiding significant differences in brightness.

[0062] In other cases, please refer to Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of a second structure of the reflector provided in an embodiment of this application. Figure 6 This is a schematic diagram of a third structure of the reflector provided in an embodiment of this application. Please continue reading. Figure 5 If the reflector 12 is located at the corner of the frame 11, and the first side 1212 is closer to the corner than the second side 1213, less light from the light source will reach the portion of the third reflective surface 121 near the corner. To accommodate this uneven light distribution, the angle α between the bottom edge 1211 and the first side 1212 is designed to be between 110° and 145°, and the angle β between the bottom edge 1211 and the second side 1213 is between 80° and 90°. In other words, the third reflective surface 121 of the reflector 12 extends towards the corner of the frame 11 to reflect as much light as possible into the liquid crystal module 20.

[0063] In the display device 100, light needs to be evenly distributed onto the liquid crystal module 20 to achieve a clear image display. When the reflector 12 is located at the corner of the frame 11, the distribution of light onto the third reflective surface 121 is uneven due to the limitations of the corner position. By increasing the angle α between the bottom edge 1211 and the first side edge 1212, the third reflective surface 121 extends towards the corner, increasing the area of ​​the third reflective surface 121 in the corner region. This captures more light that might otherwise be wasted, allowing the entire third reflective surface 121 to rationally adjust the light reflection path according to different light distribution conditions, guiding more light into the liquid crystal module 20, improving light utilization and display effect.

[0064] In this case, in practical applications, the reflector 12 may be positioned at different corner locations on the frame 11, and the light distribution at each location may differ. To accommodate this diversity, please refer to [further details needed]. Figure 6 Another feasible design is to set the angle α between the bottom edge 1211 and the first side edge 1212 to 80° to 90°, and the angle β between the bottom edge 1211 and the second side edge 1213 to 110° to 145°. This angle adjustment allows for flexible adaptation to changes in light distribution when the reflector 12 is in different corner positions. For example, when light at the corner shines from another direction, a larger angle β between the bottom edge 1211 and the second side edge 1213 allows the third reflective surface 121 to better align with the incident direction of the light, thereby increasing the amount of light reflected.

[0065] An optical microstructure layer is provided on the side of the reflector 12 away from the frame 11, that is, an optical microstructure layer is provided on the third reflective surface 121. The optical microstructure layer includes periodically arranged grooves or prism units for controlling the direction of incident light. The periodically arranged microstructures can change the reflected light path and reduce scattering loss. The groove can be a V-shaped groove with a groove depth to groove width ratio ranging from 0.5 to 2, which can achieve better optical effects. Within this ratio range, the reflection and refraction of light in the groove are more orderly, the scattering phenomenon is effectively suppressed, and more light can be accurately reflected to the target area, thereby improving the light energy utilization rate of the backlight module 10.

[0066] Please see Figure 7 , Figure 7 This is a schematic diagram of a second structure of the frame provided in an embodiment of this application. The frame 11 includes a first support portion 113 and a second support portion 114, which are arranged sequentially along the thickness direction of the frame 11. The first support portion 113 and the second support portion 114 form a groove for accommodating the diaphragm assembly 2. The liquid crystal module 20 can be connected to the end face of the frame 11.

[0067] In other words, the liquid crystal module 20 and the film assembly 2 are arranged in a layered layout in this embodiment, and the two are not fixed on the same plane. Through the ingenious use of this layered design, sufficient fixing area is provided for the liquid crystal module 20 while ensuring that the expansion / contraction space of the film is not affected, thereby significantly improving the display quality and stability of the overall display device 100.

[0068] The first support portion 113 has a first support surface 1131. On the frame 11, the first support surface 1131 refers to a plane or surface used to support and fix the diaphragm assembly 2. The first support surface 1131 has a specific shape and size to ensure that the diaphragm assembly 2 can be correctly installed and positioned, that is, the first support surface 1131 can be used to support the diaphragm assembly 2.

[0069] The second support portion 114 is connected to the first support surface 1131 of the first support portion 113, and the second support surface 1141 is formed on the side of the second support portion 114 away from the first support portion 113. On the frame 11, the second support surface 1141 refers to a plane or surface used to support and fix the liquid crystal module 20. Similar to the first support surface 1131, the second support surface 1141 also has a specific shape and size to ensure that the liquid crystal module 20 can be correctly installed and positioned, that is, the second support surface 1141 can be used to support the liquid crystal module 20.

[0070] The frame 11 can effectively support and fix the diaphragm assembly 2 and the liquid crystal module 20, so that the diaphragm assembly 2 and the liquid crystal module 20 are arranged in layers. Without affecting the expansion / contraction space of the diaphragm assembly 2, it provides sufficient adhesive area for the liquid crystal module 20, thereby significantly improving the display quality and stability of the overall display device 100.

[0071] Please continue reading. Figure 7 The first support portion 113 also has a slope 1132, which includes a first reflective surface 1111 and a second reflective surface 1121. The slope 1132 is at least a part of the inner surface of the frame 11. The slope 1132 faces the inner side of the frame 11, that is, it is inclined in a direction away from the second support portion 114. The slope 1132 is connected to the first support surface 1131. The slope 1132 is inclined from the first support surface 1131 towards the inner side of the frame 11, surrounding the upper part or the periphery of the light-emitting unit and / or the light guide plate, and extending outward. This design not only avoids the problem of light blocking, but also achieves the dual function of light guiding and light leakage prevention through its inclined structure, significantly increasing the effective area of ​​light, thereby improving the utilization rate of light and making the brightness distribution of the display device 100 more uniform, thus enhancing the user's visual experience.

[0072] The inclined surface 1132 can be a curved surface or a folded surface. When the inclined surface 1132 is a curved surface, it is an arc surface. When the inclined surface 1132 is a curved surface, it can be a smooth arc surface, which helps to distribute light evenly, reduce glare and reflection, and further improve the display effect.

[0073] The bevel 1132 has a gap between itself and the diaphragm assembly 2, which allows light to pass through more smoothly to the bottom of the diaphragm assembly 2, further narrowing the bezel and reducing light loss during transmission, thereby improving the overall brightness of the display device 100.

[0074] Please see Figure 8 , Figure 8 This is a schematic diagram of the structure of a backlight module provided in an embodiment of this application. This application provides a backlight module 10, which includes a backplate 4, a light source, a diffuser plate 3, a mounting frame 1, and a diaphragm assembly 2. The mounting frame 1 is the same as the mounting frame 1 in the above embodiment. The frame 11 of the mounting frame 1 is connected to the side of the extension 42 away from the main body 41, and a groove is provided on the inner surface of the frame 11; the diaphragm assembly 2 overlaps within the groove.

[0075] The light source can be an LED (light-emitting diode) or a Mini LED, etc., and the light source and FPC (flexible printed circuit board) form a light bar. LED light sources can emit stable and high-brightness light.

[0076] The back plate 4 provides basic support and structural stability. The back plate 4 includes a main body 41 and an extension 42, which together with the main body 41 form a receiving groove 43. The diffuser plate 3 overlaps within the receiving groove 43.

[0077] The fixing frame 1 surrounds the inner side of the receiving space, i.e., the frame 11, and a groove is provided on the inner surface of the frame 11 near the inner side of the receiving space, i.e., the inner side of the frame 11. The diaphragm assembly 2 can be disposed inside the receiving space, i.e., the frame 11, and in the groove. The liquid crystal module 20 can be disposed outside the inner side of the receiving space, i.e., the frame 11, and connected to the end face of the frame 11.

[0078] Please see Figure 9 , Figure 9This is a schematic diagram of the structure of a display device provided in an embodiment of this application. This application provides a display device 100, which can be a television, computer monitor, mobile phone screen, vehicle display, etc. The display device 100 includes a backlight module 10 and a liquid crystal module 20. The backlight module 10 is the same as the one described in the above embodiment, and the liquid crystal module 20 includes a multi-layer structure such as a liquid crystal layer, electrodes, and a circuit board. The liquid crystal module 20 displays images or information by controlling the arrangement of liquid crystal molecules. The liquid crystal module 20 is disposed opposite to the backlight module 10, and the liquid crystal module 20 is connected to the side of the mounting bracket 1 away from the back plate 4. In this embodiment, the liquid crystal module 20 and the diaphragm assembly 2 are arranged in a layered layout, and they are not fixed on the same plane. Through this clever use of layered design, sufficient fixing area is provided for the liquid crystal module 20 while ensuring that the expansion / contraction space of the diaphragm assembly 2 is not affected, thereby significantly improving the overall display quality and stability of the display device 100.

[0079] The mounting bracket 1, backlight module 10, and display device 100 provided in this application embodiment are as follows: The mounting bracket 1 includes a frame 11 and a reflector 12. The inner surface of the frame 11 is a reflective surface. The frame 11 includes a first fixing section 111 and a second fixing section 112. The inner surface of the first fixing section 111 has a first reflective surface 1111, and the inner surface of the second fixing section 112 has a second reflective surface 1121. A gap 110 is formed between the first reflective surface 1111 and the second reflective surface 1121 to form a continuous reflective interface, so that light can be reflected according to the designed light path, ensuring the effective use of light and avoiding the occurrence of dark pattern defects, thereby significantly improving the display uniformity and overall optical efficiency of the display device 100.

[0080] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0081] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0082] The mounting bracket, backlight module, and display device provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application, and the descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A fixing frame, characterized in that, include: The frame includes a first fixed section and a second fixed section, the inner surface of the first fixed section has a first reflective surface, the inner surface of the second fixed section has a second reflective surface, and a gap is formed between the first reflective surface and the second reflective surface; A reflector that blocks the gap.

2. The fixing frame according to claim 1, characterized in that, The first fixed section has a first recessed step at one end near the second fixed section, and at least a portion of the structure of the reflector is embedded in the first recessed step.

3. The fixing frame according to claim 2, characterized in that, The absolute value of the difference between the depth of the first recessed step and the thickness of the reflector is less than or equal to 2 mm.

4. The fixing frame according to claim 2, characterized in that, The second fixed section has a second recessed step at one end near the first fixed section, and at least a portion of the structure of the reflector is embedded in the second recessed step.

5. The fixing frame according to any one of claims 1 to 4, characterized in that, The side of the reflector away from the frame is a third reflective surface. The third reflective surface has a bottom edge, a first side edge, and a second side edge. The first side edge and the second side edge are arranged opposite to each other. Both the first side edge and the second side edge are connected to the bottom edge. The extension direction of the bottom edge of the third reflective surface is the same as the length direction of the frame. The orthographic projection of the first side edge onto the frame is located within the first fixed segment, and the orthographic projection of the second side edge onto the frame is located within the second fixed segment.

6. The fixing frame according to claim 5, characterized in that, The angle between the bottom edge and the first side edge is 80° to 90°; or, the angle between the bottom edge and the first side edge is 110° to 145°.

7. The fixing frame according to claim 5, characterized in that, The third reflective surface is provided with an optical microstructure layer, which includes periodically arranged grooves or prism units for controlling the direction of incident light.

8. The fixing frame according to any one of claims 1 to 4, characterized in that, The frame includes a first support portion and a second support portion. The first support portion has a first supporting surface. The second support portion is connected to the first supporting surface of the first support portion. The first support portion also has an inclined surface, which includes a first reflective surface and a second reflective surface. The inclined surface is connected to the first supporting surface and is inclined from the first supporting surface toward the inner side of the frame.

9. A backlight module, characterized in that, include: A back plate, the back plate including a main body and an extension, the extension and the main body forming a receiving groove; A diffuser plate, which overlaps within the receiving groove; A fixing frame, wherein the fixing frame is the fixing frame according to any one of claims 1 to 8, wherein the frame of the fixing frame is connected to the side of the extension away from the main body, and the inner surface of the frame is provided with a groove; A diaphragm assembly that overlaps within the groove.

10. A display device, characterized in that, include: A backlight module, wherein the backlight module is the backlight module as described in claim 9; A liquid crystal module is disposed opposite to the backlight module, and the liquid crystal module is connected to the side of the mounting bracket away from the back plate.

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