Backlight module and display device

Abstract

The utility model relates to a backlight module and a display device. The backlight module comprises an optical diffusion plate, wherein a mounting notch is formed in the edge of the optical diffusion plate; the back plate is arranged on one side of the optical diffusion plate, the back plate comprises a hanging lug, the hanging lug is arranged on the edge of the back plate and extends towards one side of the optical diffusion plate in the first direction, and the hanging lug is correspondingly matched with the mounting notch; the hanging lug comprises a first reinforcing part, and the first reinforcing part is arranged on the hanging lug and protrudes in the direction away from the mounting notch. The first reinforcing part can increase the structural strength of the hanging lug, when the optical diffusion plate is subjected to acting force in the thickness direction of the hanging lug, due to the reinforcing effect of the first reinforcing part on the hanging lug, the hanging lug cannot be bent and deformed, the optical diffusion plate is reliably positioned, the optical diffusion plate is prevented from shifting in the thickness direction of the hanging lug, and the service life of the optical diffusion plate is prolonged. The optical diffusion plate is prevented from being abraded, and the use performance of the backlight module is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and in particular to a backlight module and a display device. Background Art

[0002] Typically, a backlight module is used in a display device to provide a bright and evenly distributed backlight source, enabling the display device to display images. Currently, a backlight module generally comprises a backplate, an optical diffuser, and a frame. The optical diffuser typically has notches on it that mate with the backplate's mounting ears, ensuring accurate attachment of the optical diffuser to the backplate.

[0003] Typically, the mounting ears on the backplane are directly bent into a flat plate-like structure. In this case, the mounting ears are weaker when the backplane is thin. During mechanical performance testing of the entire display device, the optical diffuser plate is subjected to forces along the thickness of the mounting ears, causing the mounting ears to bend and deform. This can cause the optical diffuser plate to shift along the thickness of the mounting ears within the entire device, leading to wear on the optical diffuser plate and affecting the performance of the backlight unit. Utility Model Content

[0004] Based on this, it is necessary to provide a backlight module and display device to address the problem that the optical diffuser plate is scratched due to deformation of the ear during mechanical performance testing of the current backlight module, which can avoid scratches on the optical diffuser plate and ensure the performance of the backlight module.

[0005] A backlight module, comprising:

[0006] an optical diffuser plate, wherein an edge of the optical diffuser plate has a mounting notch; and

[0007] a back plate, disposed on one side of the optical diffuser plate, the back plate comprising a hanging ear, the hanging ear being disposed on an edge of the back plate and extending along a first direction toward one side of the optical diffuser plate, the hanging ear correspondingly engaging with the mounting notch;

[0008] The hanging ear includes a first reinforcement portion, which is arranged on the hanging ear and protrudes in a direction away from the installation notch.

[0009] The backlight module and display device of the present application are characterized in that, in the backlight module, the edge of the optical expansion plate has a mounting notch, the edge of the back plate has a protruding lug, and after the optical diffuser plate is installed on one side of the back plate, the lug is installed in the mounting notch to position the relative position of the optical diffuser plate and the back plate. In addition, the lug has a first reinforcement portion, which can protrude in a direction away from the mounting notch to increase the structural strength of the lug. When the optical diffuser plate is subjected to a force along the thickness direction of the lug, the lug will not bend or deform due to the reinforcement effect of the first reinforcement portion on the lug, so as to reliably position the optical diffuser plate, prevent the optical diffuser plate from shifting along the thickness direction of the lug, avoid abrasion of the optical diffuser plate, and ensure the performance of the backlight module.

[0010] In one embodiment of the present application, the first reinforcement portion is arranged along the first direction;

[0011] A dimension of the first reinforcement portion along the first direction is smaller than or equal to a dimension of the hanging ear along the first direction.

[0012] In this way, the structural strength of the ear hook can be improved and the optical diffuser plate can be prevented from shifting.

[0013] In one embodiment of the present application, the hanging ear further includes a first supporting portion and a second supporting portion, and the first supporting portion and the second supporting portion are arranged on both sides of the first reinforcing portion along the width direction of the hanging ear;

[0014] The installation notch has a first inner wall, the first supporting portion and the second supporting portion can face the first inner wall, and the first reinforcing portion is protruded in a direction away from the first inner wall.

[0015] In this way, the structural strength of the hanging ear can be improved, and the molding process is facilitated.

[0016] In one embodiment of the present application, the connections between the first supporting portion, the second supporting portion and the first reinforcing portion are smoothly transitioned.

[0017] In this way, stress concentration can be prevented.

[0018] In one embodiment of the present application, the number of the first reinforcement portion is at least one. When the number of the first reinforcement portion is multiple, the multiple first reinforcement portions are spaced apart along the width direction of the hanging ear.

[0019] And / or, the hanging ear and the back plate are an integral structure.

[0020] In this way, the structural strength of the hanging ear can be improved.

[0021] In one embodiment of the present application, the back plate further includes a second reinforcing portion, the second reinforcing portion being protruding from an edge of the back plate and being arranged on a side surface of the hanging ear along a width direction of the hanging ear;

[0022] The second reinforcement portion is arranged corresponding to the installation notch.

[0023] In this way, the mounting ears can be prevented from directly contacting the mounting notch, thereby preventing the optical diffuser plate from cracking.

[0024] In one embodiment of the present application, the mounting notch has a first inner wall and two second inner walls, the first inner wall extends along the first direction, and the two second inner walls are arranged on both sides of the first inner wall along the first direction and are arranged perpendicular to the first inner wall;

[0025] There are two second reinforcement portions, which are arranged on both sides of the hanging ear along the width direction of the hanging ear, and each second reinforcement portion corresponds to one second inner wall.

[0026] In this way, the mounting ears can be prevented from directly contacting the mounting notch, thereby preventing the optical diffuser plate from cracking.

[0027] In one embodiment of the present application, the backlight module includes at least one of the following features:

[0028] Item 1: The dimension of the second reinforcement portion along the first direction is greater than or equal to the dimension of the mounting notch along the first direction;

[0029] Item 2, the second reinforcement portion is recessed in the surface of the back plate away from the surface of the optical diffuser plate;

[0030] Item 3: The second reinforcement portion and the back plate are an integral structure.

[0031] In this way, the contact area between the second reinforcement part and the hanging ear can be ensured, the molding process of the second reinforcement part is facilitated, and the structural strength of the connection between the second reinforcement part and the back plate is ensured.

[0032] In one embodiment of the present application, the optical diffuser plate is fixed to the back plate by adhesive or spray adhesive.

[0033] In this way, the reliability of the connection between the optical diffuser plate and the back plate can be ensured.

[0034] A display device comprising at least a display panel and a backlight module according to any one of the above technical features;

[0035] The backlight module is arranged on the non-display surface of the display panel.

[0036] The display device of the present application adopts the above-mentioned backlight module, which can prevent the optical diffusion plate from being scratched or cracked, thereby ensuring the performance of the backlight module and thus ensuring the performance of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a partial schematic diagram of a backlight module according to an embodiment of the present application.

[0038] Figure 2 for Figure 1 The exploded diagram of the backlight module is shown.

[0039] Figure 3 for Figure 1 The backlight module shown is a partial enlarged view at point A.

[0040] Figure 4 for Figure 2 The backlight module shown is a partial enlarged view at point B.

[0041] Among them: 10, backlight module; 100, optical diffuser; 110, installation notch; 111, first inner wall; 112, second inner wall; 200, back plate; 210, hanging ear; 211, first reinforcement part; 212, first support part; 213, second support part; 220, installation surface; 230, second reinforcement part; 240, flange. DETAILED DESCRIPTION

[0042] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0043] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0044] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0045] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0046] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above," "above," and "above" the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. The first feature being "below," "below," and "below" the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0047] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0048] Currently, backlight modules generally include a backplane, an optical diffuser, and a frame. The optical diffuser generally has notches on it that mate with the backplane's lugs to accurately secure the optical diffuser to the backplane. Typically, the lugs on the backplane are directly bent and formed to form a flat plate-like structure. In this case, the strength of the lugs is weaker when the backplane is thinner. When the entire display device undergoes mechanical performance testing, the optical diffuser is subjected to forces along the lug's thickness, causing the lug to bend and deform, resulting in displacement of the optical diffuser within the entire device along the lug's thickness. This, in turn, can cause the optical diffuser to become scratched, affecting the performance of the backlight module.

[0049] For this, see Figure 1 and Figure 2 , the present application provides a backlight module 10. Figure 1 is a partial schematic diagram of a backlight module 10 according to an embodiment of the present application. Figure 2 for Figure 1 An exploded schematic diagram of a backlight module 10 is shown. The backlight module 10 is used in a display device (not shown) to enable the display device to display an image. It is worth noting that the display device can be a liquid crystal display, a mobile phone, a smart tablet, or other device or equipment that requires a display panel. The following description only uses the display device as an example.

[0050] The backlight module 10 is provided with a first reinforcement portion 211 on the mounting ear 210 to increase the structural strength of the mounting ear 210. When the optical diffuser plate 100 is subjected to a force acting along the thickness direction of the mounting ear 210, the first reinforcement portion 211 strengthens the mounting ear 210, preventing the mounting ear 210 from bending or deforming. This ensures that the optical diffuser plate 100 is securely positioned, prevents displacement of the optical diffuser plate 100 along the thickness direction of the mounting ear 210, and protects the optical diffuser plate 100 from wear, thereby ensuring the performance of the backlight module 10. The following describes the specific structure of the backlight module 10 according to one embodiment.

[0051] See also Figures 1 to 4 In one embodiment, the backlight module 10 includes an optical diffuser plate 100 and a back plate 200. The optical diffuser plate 100 has an edge with a mounting notch 110. The back plate 200 is disposed on one side of the optical diffuser plate 100 and includes a hook 210. The hook 210 is disposed on the edge of the back plate 200 and extends along a first direction toward one side of the optical diffuser plate 100. The hook 210 corresponds to the mounting notch 110. The hook 210 includes a first reinforcement portion 211. The first reinforcement portion 211 is disposed on the hook 210 and protrudes in a direction away from the mounting notch 110. Figure 3 for Figure 1 The backlight module 10 is shown in a partially enlarged view at point A. Figure 4 for Figure 2 The backlight module 10 is shown as a partially enlarged view at point B.

[0052] To better illustrate the structure of the backlight module 10, the orientation of the backlight module 10 is first introduced here. The orientation of the backlight module 10 is based on the directions shown by the height, width and thickness of the hanging ear 210. The height direction of the hanging ear 210 is the first direction, the width direction of the hanging ear 210 is the second direction, and the thickness direction of the hanging ear 210 is the third direction. Figure 4 shown.

[0053] The optical diffuser 100 and the back plate 200 have a certain thickness along the first direction, and the optical diffuser 100 is arranged in a flat shape along the second direction and the third direction. The optical diffuser 100 is arranged on one side of the back plate 200 along the first direction. Figure 1 As shown, the optical diffuser 100 is disposed above the back plate 200 and is fixedly connected to the back plate 200 to form an integral backlight module 10 .

[0054] The edge of the back panel 200 facing the optical diffuser 100 serves as a mounting surface 220. The optical diffuser 100 abuts the mounting surface 220 of the back panel 200, enabling mounting of the optical diffuser 100 and the back panel 200. The edge of the optical diffuser 100 defines a mounting notch 110. This notch 110 is a cutout in the edge of the optical diffuser 100, i.e., it opens toward the outside of the optical diffuser 100. The edge of the back panel 200 also defines a mounting lug 210. The mounting lug 210 protrudes from the mounting surface 220 and extends in a first direction toward the optical diffuser 100.

[0055] The hanging lug 210 has a certain height along the first direction, a certain width along the second direction, and a certain thickness along the third direction. The hanging lug 210 has two opposing side surfaces (not shown) along the second direction, and a first surface (not shown) and a second surface (not shown) along the third direction. The first and second surfaces are connected to the two side surfaces on either side to form the outer perimeter of the hanging lug 210.

[0056] The mounting notch 110 has a first inner wall 111 and two second inner walls 112. The first inner wall 111 extends along the second direction, and the two second inner walls 112 are arranged on either side of the first inner wall 111 along the third direction and perpendicular to the first inner wall 111. The mounting notch 110 is positioned to correspond to the position of the mounting ear 210. The mounting ear 210 can be installed in the mounting notch 110, with the first surface of the mounting ear 210 facing the first inner wall 111, and the two side surfaces of the mounting ear 210 corresponding to the two second inner walls 112 of the mounting notch 110. The second surface of the mounting ear 210 is exposed to the outside of the optical diffuser plate 100.

[0057] During installation, the mounting notches 110 and the mounting ears 210 are aligned, and then the optical diffuser plate 100 is mounted on the mounting surface 220 of the back plate 200. At this time, the mounting ears 210 are located in the mounting notches 110. The engagement of the mounting ears 210 with the mounting notches 110 can position the optical diffuser plate 100, thereby determining the relative position of the optical diffuser plate 100 and the back plate 200, and ensuring that the optical diffuser plate 100 is accurately mounted on the back plate 200.

[0058] The present application provides a first reinforcement portion 211 on the mounting ear 210. The first reinforcement portion 211 is located on the second surface of the mounting ear 210 and increases the structural strength of the mounting ear 210. When the optical diffuser plate 100 is mounted on the back panel 200, the mounting ear 210 is located in the mounting notch 110, and the first reinforcement portion 211 is located at the opening of the mounting notch 110. That is, the first reinforcement portion 211 does not contact the inner wall of the mounting notch 110. When the optical diffuser plate 100 is subjected to a force in the third direction, the first reinforcement portion 211 reinforces the mounting ear 210, preventing the mounting ear 210 from bending, thereby preventing displacement.

[0059] Furthermore, when the thickness of the hanging ear 210 is relatively thin, after the first reinforcing portion 211 is provided on the hanging ear 210, the first reinforcing portion 211 can still improve the structural strength of the hanging ear 210. In this way, the back plate 200 and the hanging ear 210 can be made of relatively thin materials, which can reduce the material thickness while ensuring the structural strength of the hanging ear 210, thereby saving costs.

[0060] In the backlight module 10 of the above embodiment, the first reinforcement portion 211 increases the structural strength of the hanging ear 210. When the optical diffuser plate 100 is subjected to a force acting along the thickness direction of the hanging ear 210, the first reinforcement portion 211 strengthens the hanging ear 210, preventing the hanging ear 210 from bending or deforming. This ensures that the optical diffuser plate 100 is reliably positioned, prevents displacement of the optical diffuser plate 100 along the thickness direction of the hanging ear 210, and protects the optical diffuser plate 100 from being scratched, thereby ensuring the performance of the backlight module 10.

[0061] In one embodiment, the back panel 200 has four mounting surfaces 220 on its periphery, each of which has a mounting lug 210. Accordingly, the optical diffuser 100 also has four side edges (not shown), each of which has a mounting notch 110. Each mounting lug 210 corresponds to each mounting notch 110. The combination of the multiple mounting notches 110 and the mounting lugs 210 allows for more accurate positioning of the optical diffuser 100 and the back panel 200, while also providing a more secure fixation between the optical diffuser 100 and the back panel 200.

[0062] Of course, in other embodiments of the present application, each mounting surface 220 of the back plate 200 may also be provided with at least two mounting ears 210. Accordingly, the number of mounting notches 110 on each side of the optical diffuser plate 100 matches the number of mounting ears 210. This can further enhance the connection strength between the optical diffuser plate 100 and the back plate 200.

[0063] See also Figure 2 and Figure 4 In one embodiment, the first reinforcement portion 211 is provided along a first direction. Specifically, the first reinforcement portion 211 is provided on the second surface of the hook 210 along the height direction of the hook 210. When the hook 210 is subjected to a force along the thickness direction, the first reinforcement portion 211 provided along the height direction can increase the structural strength of the hook 210 in the height direction, thereby stopping the optical diffuser plate 100 and preventing it from shifting.

[0064] See also Figure 2 and Figure 4 In this embodiment, the dimension of the first reinforcement portion 211 along the first direction is equal to the dimension of the hanging ear 210 along the first direction. In other words, the height dimension of the first reinforcement portion 211 is the same as the height dimension of the hanging ear 210. This improves the overall structural strength of the hanging ear 210 and prevents it from bending.

[0065] Of course, in other embodiments of the present application, the dimension of the first reinforcement portion 211 along the first direction may be smaller than the dimension of the hook 210 along the first direction. This is sufficient as long as the first reinforcement portion 211 can improve the structural strength of the contact portion between the hook 210 and the optical diffuser plate 100 and prevent the hook 210 from bending.

[0066] See also Figures 1 to 4 In one embodiment, the hanging ear 210 further includes a first supporting portion 212 and a second supporting portion 213. The first supporting portion 212 and the second supporting portion 213 are disposed on both sides of the first reinforcing portion 211 along the width direction of the hanging ear 210. The first supporting portion 212 and the second supporting portion 213 can face the first inner wall 111, and the first reinforcing portion 211 is disposed to protrude away from the first inner wall 111.

[0067] The first reinforcement portion 211 is disposed between the first support portion 212 and the second support portion 213 and is connected to the first support portion 212 and the second support portion 213 to form an integral mounting lug 210. After the mounting lug 210 is installed in the mounting notch 110, the first support portion 212 and the second support portion 213 are closer to the first inner wall 111 than the first reinforcement portion 211. The first reinforcement portion 211 is recessed in the first surface and protrudes away from the first inner wall 111. In other words, the first reinforcement portion 211 protrudes from the surface of the first support portion 212 and the second support portion 213 on the second surface.

[0068] In other words, the first reinforcement portion 211 is located in the middle of the ear hook 210. The first reinforcement portion 211 is recessed on the first surface and protrudes on the second surface. This allows the first reinforcement portion 211 to reinforce the entire ear hook 210, improving its structural strength. Furthermore, the ear hook 210 can be bent to form the first reinforcement portion 211, reducing the difficulty of forming the first reinforcement portion 211 and improving its efficiency.

[0069] Of course, in other embodiments of the present application, the second surface may also be a plane. In other words, the surface of the first reinforcing portion 211 facing the first inner wall 111 may not be recessed. In this case, the first reinforcing portion 211 is a reinforcing column or other structure that can perform other reinforcing functions.

[0070] See also Figures 1 to 4 In one embodiment, the connections between the first support portion 212 and the second support portion 213 and the first reinforcement portion 211 are smoothly rounded. Specifically, the connection between the first support portion 212 and the first reinforcement portion 211 is smoothly rounded, and the connection between the second support portion 213 and the first reinforcement portion 211 is smoothly rounded. This prevents stress concentration and improves the structural strength of the mounting bracket 210.

[0071] See also Figures 1 to 4 In one embodiment, the hanging ear 210 and the back plate 200 are integrally formed. That is, the hanging ear 210 and the back plate 200 are integrally formed. The hanging ear 210 and the first reinforcement portion 211 on the back plate 200 are formed by bending. This improves molding efficiency, reduces the complexity of the back plate 200 structure, facilitates molding of the hanging ear 210, and ensures the structural strength of the connection between the hanging ear 210 and the back plate 200, preventing the hanging ear 210 from breaking at the connection.

[0072] See also Figures 1 to 4 In one embodiment, there is at least one first reinforcement portion 211. If there are multiple first reinforcement portions 211, the multiple first reinforcement portions 211 are spaced apart along the width direction of the hanging ear 210. In this embodiment, there is only one first reinforcement portion 211. This ensures the structural strength of the hanging ear 210 while also reducing the difficulty of molding the hanging ear 210. Of course, in other embodiments of the present application, there may be at least two first reinforcement portions 211. At least two first reinforcement portions 211 can further enhance the structural strength of the hanging ear 210.

[0073] Understandably, after the mounting bracket is bent and formed, if the mounting bracket material is thin, the mounting bracket will act like a blade along the second direction. When the display module undergoes mechanical performance testing or the backlight module is moved, the notch of the optical diffuser plate will impact the side of the mounting bracket. In this case, the blade-like mounting bracket will cause the notch to crack, thereby damaging the optical diffuser plate.

[0074] To this end, the present application sets a second reinforcement portion 230 on the back plate 200, and the second reinforcement portion 230 contacts the installation gap 110. Figures 1 to 4 In one embodiment, the back plate 200 further includes a second reinforcement portion 230 , which is protruding from the edge of the back plate 200 and disposed on the side of the hanging ear 210 along the width direction of the hanging ear 210 . The second reinforcement portion 230 is disposed corresponding to the installation notch 110 .

[0075] The second reinforcement portion 230 is disposed on the mounting surface 220 of the back panel 200 and is located on the side of the mounting ear 210. After the mounting ear 210 is installed in the mounting notch 110, the second reinforcement portion 230 corresponds to the second inner wall 112 of the mounting notch 110. After the optical diffuser 100 is installed on the back panel 200, both the mounting ear 210 and the second reinforcement portion 230 are located in the mounting notch 110. The mounting ear 210 corresponds to the first inner wall 111 of the mounting notch 110, and the second reinforcement portion 230 corresponds to the second inner wall 112 of the mounting notch 110.

[0076] When the display device undergoes a mechanical performance test or the backlight module 10 is lifted, the optical diffuser plate 100 moves in the second direction and hits the second inner wall 112 of the mounting notch 110. Since the back panel 200 contacts the second inner wall 112 through the second reinforcing portion 230, the side surface of the ear 210 does not contact the second inner wall 112 of the mounting notch 110. In this way, the second reinforcing portion 230 can increase the remaining contact area with the second inner wall 112, and there is no sharp surface cutting the second inner wall 112 of the mounting notch 110, thereby preventing the optical diffuser plate 100 from cracking.

[0077] See also Figures 1 to 4 In one embodiment, a certain distance exists between the second reinforcement portion 230 and the side of the hanging ear 210. In other words, the second reinforcement portion 230 and the hanging ear 210 are not connected. This facilitates the molding process of the second reinforcement portion 230 and the hanging ear 210 and prevents force transfer between the second reinforcement portion 230 and the hanging ear 210.

[0078] See also Figure 4In one embodiment, the second reinforcing portion 230 is recessed into the surface of the back plate 200, facing away from the surface of the optical diffuser 100. This allows the second reinforcing portion 230 to be directly processed using the back plate 200, facilitating the processing and forming of the second reinforcing portion 230. Of course, in other embodiments of the present application, reinforcing ribs or the like may also be provided on the mounting surface 220 of the back plate 200.

[0079] See also Figures 1 to 4 In one embodiment, there are two second reinforcing portions 230, each disposed on either side of the ear 210 along its width. Each second reinforcing portion 230 corresponds to a second inner wall 112. In other words, a second reinforcing portion 230 is disposed on each side of the ear 210 along its width. When the optical diffuser 100 reciprocates in the second direction, the two second reinforcing portions 230 abut against each other on their corresponding sides, thereby preventing cracking of the optical diffuser 100.

[0080] See also Figure 1 and Figure 3 In one embodiment, the dimension of the second reinforcement portion 230 along the first direction is greater than or equal to the dimension of the mounting notch 110 along the first direction. This ensures the contact area between the second reinforcement portion 230 and the mounting notch 110, preventing sharp surfaces from contacting the mounting notch 110 and thus preventing cracking of the mounting notch 110.

[0081] In one embodiment, the second reinforcement portion 230 and the back plate 200 are integrally formed. That is, the second reinforcement portion 230 and the back plate 200 are integrally formed. Forming the second reinforcement portion 230 on the back plate 200 using a stamping process or other method improves molding efficiency, facilitates molding of the second reinforcement portion 230, and ensures structural strength at the connection between the second reinforcement portion 230 and the back plate 200, preventing the second reinforcement portion 230 from breaking at the connection.

[0082] In one embodiment, the optical diffuser 100 is fixed to the back plate 200 by adhesive or spray adhesive. The optical diffuser 100 is fixed to the mounting surface 220 of the back plate 200 by adhesive. The adhesive method, the positioning of the mounting ears 210 and the second reinforcement portion 230 ensure that the optical diffuser 100 is accurately and reliably fixed to the back plate 200.

[0083] See also Figures 1 to 4In one embodiment, the back plate 200 further includes a flange 240 disposed at the edge of the back plate 200 and protruding from the mounting surface 220 of the back plate 200. Thus, the flange 240 can enclose a mounting cavity for mounting the optical diffuser plate 100, thereby further securing the optical diffuser plate 100 and preventing it from separating from the back plate 200. Furthermore, the flange 240 can facilitate connection between the backlight module 10 and other components of the display device, thereby securing the backlight module 10.

[0084] See also Figures 1 to 4 In the backlight module 10 of the present application, while the back panel 200 is bent to form the hanging ear 210, a first reinforcing portion 211 is also bent on the hanging ear 210 to increase the structural strength of the hanging ear 210. When the material of the back panel 200 is relatively thin, the first reinforcing portion 211 can also ensure the structural strength of the hanging ear 210. When the entire display device undergoes mechanical performance testing, the optical diffuser plate 100 is subjected to forces along the thickness direction of the hanging ear 210. Due to the reinforcing effect of the first reinforcing portion 211 on the hanging ear 210, the hanging ear 210 will not be bent or deformed, thereby reliably positioning the optical diffuser plate 100, preventing the optical diffuser plate 100 from shifting along the thickness direction of the hanging ear 210, and avoiding abrasion of the optical diffuser plate 100, thereby ensuring the performance of the backlight module 10.

[0085] Furthermore, the present application also forms a second reinforcement portion 230 on the back panel 200, and the second reinforcement portion 230 is located on both sides of the width direction of the ear 210. After the optical diffuser plate 100 is installed on the back panel 200, the ear 210 and the second reinforcement portion 230 are both located in the mounting notch 110, and both the ear 210 and the second reinforcement portion 230 can limit the optical diffuser plate 100. When the display device undergoes a mechanical performance test or the backlight module 10 is lifted, the optical diffuser plate 100 moves in the second direction and impacts the second inner walls 112 on both sides of the mounting notch 110. Since the back panel 200 contacts the second inner walls 112 through the second reinforcement portion 230, the contact area between the second reinforcement portion 230 and the optical diffuser plate 100 can be increased, and there is no sharp surface cutting the mounting notch 110, thereby preventing the optical diffuser plate 100 from cracking.

[0086] At the same time, the back panel 200 strengthens the structural strength of the hanging ear 210 through the first reinforcement part 211, and contacts the installation notch 110 through the second reinforcement part 230. In this way, the back panel 200 and the optical diffuser plate 100 do not need to be thickened. The thinning of the back panel 200 and the optical diffuser plate 100 has little effect on the wear or cracking of the optical diffuser plate 100 caused by the mechanical performance test, and the thickness of the back panel 200 and the optical diffuser plate 100 can be reduced to save costs.

[0087] The present application also provides a display device comprising at least a display panel (not shown) and a backlight module 10 having any of the aforementioned technical features. The backlight module 10 is disposed on the non-display surface of the display panel. The display device of the present application, employing the backlight module 10 of the aforementioned embodiment, can prevent the optical diffuser 100 from being scratched or cracked, thereby ensuring the performance of the backlight module 10 and, consequently, the display device.

[0088] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A backlight module, characterized in that: include: An optical diffuser plate, wherein an edge of the optical diffuser plate has a mounting notch; as well as a back plate, disposed on one side of the optical diffuser plate, the back plate comprising a hanging ear, the hanging ear being disposed on an edge of the back plate and extending along a first direction toward one side of the optical diffuser plate, the hanging ear correspondingly engaging with the mounting notch; The hanging ear includes a first reinforcement portion, which is arranged on the hanging ear and protrudes in a direction away from the installation notch.

2. The backlight module according to claim 1, wherein: The first reinforcement portion is arranged along the first direction; A dimension of the first reinforcement portion along the first direction is smaller than or equal to a dimension of the hanging ear along the first direction.

3. The backlight module according to claim 1, wherein: The hanging ear further includes a first supporting portion and a second supporting portion, wherein the first supporting portion and the second supporting portion are arranged on both sides of the first reinforcing portion along the width direction of the hanging ear; The installation notch has a first inner wall, the first supporting portion and the second supporting portion can face the first inner wall, and the first reinforcing portion is protruded in a direction away from the first inner wall.

4. The backlight module according to claim 3, wherein: The connections between the first supporting portion, the second supporting portion and the first reinforcing portion are smoothly transitioned.

5. The backlight module according to claim 1, wherein: The number of the first reinforcement portion is at least one. When the number of the first reinforcement portion is multiple, the multiple first reinforcement portions are spaced apart along the width direction of the hanging ear. And / or, the hanging ear and the back plate are an integral structure.

6. The backlight module according to any one of claims 1 to 5, characterized in that: The back plate further includes a second reinforcing portion, which is protruding from the edge of the back plate and is arranged on the side of the hanging ear along the width direction of the hanging ear; The second reinforcement portion is arranged corresponding to the installation notch.

7. The backlight module according to claim 6, wherein: The mounting notch has a first inner wall and two second inner walls, the first inner wall extends along the first direction, and the two second inner walls are arranged on both sides of the first inner wall along the first direction and are arranged perpendicular to the first inner wall; There are two second reinforcement portions, which are arranged on both sides of the hanging ear along the width direction of the hanging ear, and each second reinforcement portion corresponds to one second inner wall.

8. The backlight module according to claim 6, wherein: The backlight module includes at least one of the following features: Item 1: The dimension of the second reinforcement portion along the first direction is greater than or equal to the dimension of the mounting notch along the first direction; Item 2, the second reinforcement portion is recessed in the surface of the back plate away from the surface of the optical diffuser plate; Item 3: The second reinforcement portion and the back plate are an integral structure.

9. The backlight module according to any one of claims 1 to 5, characterized in that: The optical diffusion plate is fixed to the back plate by adhesive or spray adhesive.

10. A display device, characterized in that: At least comprising a display panel and a backlight module according to any one of claims 1 to 9; The backlight module is arranged on the non-display surface of the display panel.

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