Backlight module and display device

Abstract

The utility model provides a backlight module and a display device, the backlight module comprises a back plate, an optical film layer and a protection part, the back plate comprises a bottom plate and a plurality of side plates, the plurality of side plates are annularly arranged at the edge of the bottom plate to form an accommodating cavity, and one side, far away from the bottom plate, of at least one side plate is provided with a mounting groove; the optical film layer comprises an optical film body and a protruding part which are connected, the optical film body is located in the containing cavity, the protruding part extends from the optical film body to the direction close to the side plate, and at least part of the protruding part is arranged in the mounting groove; the protection part is arranged between the protruding part and the side wall of the mounting groove, and the protection part and the protruding part are arranged at an interval, so that direct contact between the protruding part and the side wall of the mounting groove is avoided, abrasion or damage caused by shaking of the protruding part is reduced, the service life of the optical film layer is prolonged, and the overall reliability is improved.

Description

Technical Field

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

[0002] Liquid Crystal Modules (LCMs) are favored by consumers for their many advantages, such as clear and delicate images, flicker-free operation, eye-friendly design, no radiation, low power consumption, and thinner and lighter design. In the design of LCM display modules, an ear-mounted structure is usually used to position the optical film. By creating a limiting groove in a certain part of the back plate, the ear of the optical film overlaps in the limiting groove, and the contact end faces on both sides of the limiting groove limit the ear, thereby achieving precise positioning of the optical film.

[0003] In related technologies, when the backplate is thin, there are burrs in some areas, or the rounded corners of the mold are large, the contact surfaces on both sides of the limiting groove may become sharp or uneven, which can cause the optical film to be easily punctured when it shakes laterally or vertically, thus affecting the light transmission performance, surface integrity, and overall reliability of the display module. Utility Model Content

[0004] Embodiments of this utility model provide a backlight module and a display device to alleviate the deficiencies in related technologies.

[0005] To achieve the above functions, the technical solution provided by this utility model embodiment is as follows:

[0006] An embodiment of this utility model provides a backlight module, comprising:

[0007] The back plate includes a bottom plate and a plurality of side plates, the plurality of side plates being arranged around the edge of the bottom plate to form a receiving cavity, and at least one of the side plates having a mounting groove on the side away from the bottom plate;

[0008] An optical film layer includes a connected optical film body and a protrusion, the optical film body being located within the receiving cavity, the protrusion extending from the optical film body towards the side plate, and at least a portion of the protrusion being disposed within the mounting groove; and

[0009] A protective part is located between the protrusion and the side wall of the mounting groove, and the protective part is spaced apart from the protrusion.

[0010] Optionally, in one embodiment, the protective portion includes a first protective sub-portion, a second protective sub-portion disposed opposite to the first protective sub-portion, and a third protective sub-portion connected between the first protective sub-portion and the second protective sub-portion;

[0011] The first protective sub-part is disposed between the side plate and the optical film body, the second protective sub-part is disposed on the side of the side plate away from the optical film body, and the third protective sub-part is disposed between the side wall of the mounting groove and the protrusion.

[0012] Optionally, in one embodiment, the third protective sub-part includes an arc portion that protrudes toward the protrusion and is spaced apart from the protrusion.

[0013] Optionally, in one embodiment, the protective portion is disposed separately from the optical film layer.

[0014] Optionally, in one embodiment, the thickness of the protective portion is less than or equal to 0.05 mm.

[0015] Optionally, in one embodiment, the protective part is one of a polyester film, a polytetrafluoroethylene coating, an elastic coating, and foam.

[0016] Optionally, in one embodiment, the protective portion includes a first planar portion and a second planar portion disposed opposite to each other, and a bent portion connected between the first planar portion and the second planar portion. The first planar portion is connected to the side wall of the mounting groove, the bent portion is disposed on the side of the protective portion near the protrusion, and the second planar portion is located on the side of the side plate near the optical film body, or the second planar portion is located on the side of the side plate away from the optical film body.

[0017] Optionally, in one embodiment, the bent portion and the protrusion are spaced apart, the second planar portion is located on the side of the first planar portion near the optical film body, and the second planar portion is spaced apart from the optical film body.

[0018] Optionally, in one embodiment, the protective portion and the side plate are integrally formed.

[0019] This utility model embodiment also provides a display device, which includes any of the display modules described above.

[0020] The beneficial effects of this utility model embodiment are as follows: This utility model provides a backlight module and a display device. The backlight module includes a back plate, an optical film layer, and a protective part. The back plate includes a bottom plate and multiple side plates. The multiple side plates are arranged around the edge of the bottom plate to form a receiving cavity, and at least one side plate has a mounting groove on the side away from the bottom plate. The optical film layer includes an optical film body and a protrusion connected to each other. The optical film body is located in the receiving cavity, and the protrusion extends from the optical film body towards the side plate, and at least part of the protrusion is disposed in the mounting groove. By disposing the protective part between the protrusion and the side wall of the mounting groove, and the protective part and the protrusion are spaced apart, direct contact between the protrusion and the side wall of the mounting groove is avoided, reducing wear or damage to the protrusion caused by shaking, extending the service life of the optical film layer, and improving the overall reliability. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a first top view schematic diagram of the backlight module provided in an embodiment of the present utility model;

[0023] Figure 2 This is a partial cross-sectional schematic diagram of the backlight module provided in an embodiment of the present utility model;

[0024] Figure 3 Provided for the embodiments of this utility model Figure 1 The first enlarged schematic diagram at point A in the middle;

[0025] Figure 4 Provided for the embodiments of this utility model Figure 1 A schematic diagram of the partial structure of the backlight module in the B direction;

[0026] Figure 5 Provided for the embodiments of this utility model Figure 1 The second enlarged schematic diagram at point A in the middle;

[0027] Figure 6 This is a second top view schematic diagram of the backlight module provided in an embodiment of the present utility model;

[0028] Figure 7 Provided for the embodiments of this utility model Figure 6 The first enlarged schematic diagram at point C;

[0029] Figure 8 Provided for the embodiments of this utility model Figure 6 A partial structural diagram of the backlight module in the D direction;

[0030] Figure 9 This is a schematic diagram of the structure of the display device provided in an embodiment of the present utility model. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present utility model, and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower in the actual use or working mode of the device, specifically the drawing direction in the accompanying drawings; while "inner" and "outer" refer to the outline of the device. In addition, the terms "first" and "second" are used for descriptive purposes only, and the features defined by "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of the present utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections or connections that allow for communication; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] The following disclosure provides many different embodiments for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, examples of various specific processes and materials are provided, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0034] This utility model provides a backlight module and a display device. The following provides a detailed description of each. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments.

[0035] Please combine Figure 1 , Figure 2 , Figure 3 and Figure 4 ;in, Figure 1 This is a first top view schematic diagram of the backlight module provided in an embodiment of the present utility model; Figure 2 This is a partial cross-sectional schematic diagram of the backlight module provided in an embodiment of the present utility model; Figure 3 Provided for the embodiments of this utility model Figure 1 The first enlarged schematic diagram at point A in the middle; Figure 4 Provided for the embodiments of this utility model Figure 1 A schematic diagram of the partial structure of the backlight module in the B direction.

[0036] In one embodiment, the backlight module 1 includes a back plate 11, a light guide plate 12, an optical film layer 13, and a protective part 14; the back plate 11 includes a bottom plate 111 and a plurality of side plates 112, the side plates 112 extending in a direction away from the bottom plate 111, the plurality of side plates 112 being arranged around the edge of the bottom plate 111 to form a receiving cavity 120, and at least one of the side plates 112 having a mounting groove 1121 on the side away from the bottom plate 111.

[0037] The light guide plate 12 is disposed on one side of the base plate 111 and is located within the receiving cavity 120; the optical film layer 13 is disposed on the side of the light guide plate 12 away from the base plate 111, and the optical film layer 13 includes multiple optical films, including but not limited to one of diffuser sheets, prism sheets and brightness enhancement sheets. This embodiment does not impose specific limitations on this.

[0038] The optical film layer 13 includes an optical film body 131 and a protrusion 132 connected to each other. The optical film body 131 is located in the receiving cavity 120. The protrusion 132 extends from the optical film body 131 toward the side plate 112. At least a portion of the protrusion 132 is disposed in the mounting groove 1121, and the protrusion 132 is separately disposed from the mounting groove 1121.

[0039] Specifically, the protrusion 132 is located on one side of the optical film body 131, and the protrusion 132 extends from the optical film body 131 toward the side plate 112. The protrusion 132 can serve as a lug structure for the optical film layer 13. At least part of the protrusion 132 is inserted into the mounting groove 1121, thereby realizing the positioning and limiting function of the optical film layer 13.

[0040] It is understandable that during the actual manufacturing process, there will inevitably be certain tolerance deviations between the dimensions of the mounting groove 1121 and the protrusion 132. In this embodiment, by setting the protrusion 132 separately from the mounting groove 1121, a reserved space is provided between the protrusion 132 and the side wall of the mounting groove 1121, thereby avoiding the problem that the protrusion 132 cannot be inserted into the mounting groove 1121 or that the protrusion 132 and the mounting groove 1121 are stuck. At the same time, when the backlight module 1 is subjected to external vibration or force, the protrusion 132 may experience slight lateral or vertical movement. By setting the reserved space, a buffer can be provided for the movement of the protrusion 132.

[0041] The protective part 14 is located between the protrusion 132 and the side wall of the mounting groove 1121, and the protective part 14 and the protrusion 132 are spaced apart. It is understood that in related technologies, when the side plate is thin, the side wall of the mounting groove has local burrs or the mold corners are large, the side wall of the mounting groove may become sharp or uneven, which can easily cause the optical film to be punctured when it shakes horizontally or vertically, thereby affecting the light transmission performance, surface integrity and overall reliability of the backlight module. It is understood that in this embodiment, by setting the protective part 14 between the protrusion 132 and the side wall of the mounting groove 1121, and by setting the protective part 14 and the protrusion 132 spaced apart, the direct contact between the protrusion 132 and the side wall of the mounting groove 1121 is avoided, the wear or damage of the protrusion 132 caused by shaking is reduced, and the service life of the optical film 13 is extended, thereby improving the overall reliability.

[0042] Furthermore, the backlight module 1 also includes a light-emitting unit (not shown in the figure) located within the receiving cavity 120, and a reflective sheet 15 located between the base plate 111 and the light guide plate 12. The light-emitting unit is disposed on the side plate 112, and the orthographic projection of the light guide plate 12 on the side plate 112 covers the orthographic projection of the light-emitting unit on the side plate 112. The orthographic projection of the light guide plate 12 on the base plate 111 is located within the orthographic projection of the reflective sheet 15 on the base plate 111. By setting the reflective sheet 15, the light emitted by the light-emitting unit and the light guide plate 12 is prevented from being emitted from the base plate 111, thereby improving the light efficiency of the backlight module 1.

[0043] It should be noted that the technical solution proposed in this utility model is applicable to applications of liquid crystal display modules (LCM) or other backlight modules that require optical film positioning. To better illustrate the innovation of this utility model, this embodiment uses the example of the back plate 11 including four side plates 112, each side plate 112 having at least two mounting slots 1121, and the optical film layer 13 including multiple protrusions, with one protrusion corresponding to one mounting slot 1121, to illustrate the technical solution of this utility model. At the same time, this utility model is not limited to this specific embodiment, and its scope of application can be extended to different side plate 112 shapes, different numbers of mounting slots 1121 configurations, and various arrangements of protrusions in the optical film layer 13, to meet the design of backlight modules 1 with different sizes and structural requirements.

[0044] Please continue to combine Figures 1 to 4 In one embodiment, the orthographic projection of the sidewall of the mounting groove 1121 onto the protrusion 132 is located within the orthographic projection of the protective portion 14 onto the protrusion 132.

[0045] Specifically, the mounting groove 1121 can be formed on the side plate 112 by processing or molding; wherein, the side wall of the mounting groove 1121 can limit the protrusion 132 laterally and / or vertically, thereby ensuring the stability of the optical film layer 13 within the mounting groove 1121.

[0046] The protective part 14 is disposed between the protrusion 132 and the side wall of the mounting groove 1121. The protective part 14 is used to isolate the side wall of the mounting groove 1121 and the protrusion 132, so as to prevent the side wall of the mounting groove 1121 from directly contacting the protrusion 132.

[0047] The material of the protective part 14 includes, but is not limited to, polyester film (Mylar), polytetrafluoroethylene coating, elastic coating, and foam. The protective part 14 can be formed by directly pasting a single-sided polyester film onto the side wall of the mounting groove 1121 near the protrusion 132, or by directly coating the side wall of the mounting groove 1121 near the protrusion 132 with a special protective coating, such as a polytetrafluoroethylene coating, thereby forming a wear-resistant, smooth, and cushioning protective part 14.

[0048] It is understood that this embodiment adds the protective part 14 between the side wall of the mounting groove 1121 and the protrusion 132. The orthographic projection of the side wall of the mounting groove 1121 onto the protrusion 132 is located within the orthographic projection of the protective part 14 onto the protrusion 132. This avoids direct contact between the side wall of the mounting groove 1121 and the protrusion 132, reduces wear on the protrusion 132 during shaking, and improves the stability and safety of the protrusion 132. This solves the problem that the protrusion 132 of the optical film layer 13 may be damaged when the side wall of the mounting groove 1121 has sharp edges or burrs.

[0049] Furthermore, the thickness of the protective part 14 is less than or equal to 0.05 mm. It is understood that if the thickness of the protective part 14 is too large, it will increase its filling ratio in the mounting groove 1121, which may cause the protrusion 132 to fit too tightly with the mounting groove 1121, thereby affecting the assembly efficiency and positioning accuracy of the optical film layer 13. This may lead to the protrusion 132 losing its flexible buffer protection during dynamic shaking and experiencing wear.

[0050] In this embodiment, by setting the thickness of the protective part 14 to be less than or equal to 0.05 mm, a flexible buffer can be provided between the protrusion 132 and the side wall of the mounting groove 1121, protecting the optical film layer 13 from being punctured by the sharp end face of the side wall of the mounting groove 1121, while maintaining an appropriate assembly gap to avoid assembly difficulties caused by the protective part 14 being too thick.

[0051] Please continue to combine Figures 1 to 4 In one embodiment, the protective portion 14 includes a first protective sub-portion 141, a second protective sub-portion 142 disposed opposite to the first protective sub-portion 141, and a third protective sub-portion 143 connected between the first protective sub-portion 141 and the second protective sub-portion 142; wherein, the first protective sub-portion 141 is disposed between the side plate 112 and the optical film body 131, the second protective sub-portion 142 is disposed on the side of the side plate 112 away from the optical film body 131, and the third protective sub-portion 143 is disposed between the side wall of the mounting groove 1121 and the protrusion 132.

[0052] The first protective sub-part 141, the second protective sub-part 142, and the third protective sub-part 143 together constitute the protective part 14 structure, thereby covering all possible contact points between the protrusion 132 and the side wall of the mounting groove 1121, ensuring that the protrusion 132 and the side wall of the mounting groove 1121 do not contact each other; at the same time, the structure of multiple protective sub-parts can better cope with stress in different directions and prevent local stress concentration from damaging the optical film layer 13.

[0053] It is understandable that when the backlight module 1 is subjected to external vibration or force, the optical film layer 13 may become unstable during the shaking process due to the uneven distribution of the protective parts 14, affecting the positioning accuracy. By including the first protective sub-part 141, the second protective sub-part 142 and the third protective sub-part 143 in the protective parts 14, a stable three-sided protective structure is formed on the side plate, reducing the friction and damage of the side wall of the mounting groove 1121 to the optical film layer 13 during the shaking process.

[0054] Meanwhile, there may be contact between the side plate 112 and the edge of the optical film body 131. By placing the first protective sub-part 141 between the side plate 112 and the optical film body 131, direct contact between the side plate 112 and the optical film body 131 can be effectively avoided, thereby reducing the risk of wear on the optical film body 131.

[0055] Furthermore, the first protective sub-part 141 is spaced apart from the optical film body 131, thereby preventing the first protective sub-part 141 from applying additional pressure to the optical film body 131, avoiding deformation or surface stress concentration of the optical film body 131 due to adhesion, and ensuring the light transmission performance and structural integrity of the optical film body 131.

[0056] Meanwhile, the first protective sub-part 141 is spaced apart from the optical film body 131, thus providing a reserved space between the optical film body 131 and the first protective sub-part 141. The optical film body 131 can move appropriately within the reserved space, avoiding compression of the movement space due to the restriction of the first protective sub-part 141. At the same time, the first protective sub-part 141 is not directly attached to the optical film body 131, which simplifies the precise positioning requirements during the installation of the optical film layer 13, allows for a certain tolerance range, and increases the convenience of installation operations.

[0057] Please combine Figure 1 , Figure 2 , Figure 3 and Figure 5 ;in, Figure 5 Provided for the embodiments of this utility model Figure 1 The second enlarged schematic diagram at point A in the middle.

[0058] In one embodiment, the third protective sub-part 143 includes an arcuate portion 1431 that protrudes toward the protrusion 132 and is spaced apart from the protrusion 132, thereby further reducing the risk of puncture wounds from the protrusion 132.

[0059] Specifically, the third protective sub-part 143 is spaced apart from the protrusion 132, and a reserved space is provided between the third protective sub-part 143 and the protrusion 132. When the backlight module 1 is subjected to external vibration or force, the protrusion 132 will move laterally and / or vertically within the reserved space, resulting in frequent contact between the protrusion 132 and the third protective sub-part 143. If the shape design of the protective part 14 is unreasonable, it is easy to cause stress concentration problems, reducing the life and effectiveness of the protrusion 132.

[0060] It is understood that in this embodiment, the third protective sub-part 143 includes an arc-shaped portion 1431, which protrudes towards the protrusion 132, forming an arc-shaped contact end on the side of the third protective sub-part 143 near the protrusion 132. This reduces the friction force and pressure at the contact point between the third protective sub-part 143 and the protrusion 132, preventing wear or indentation on the protrusion 132 due to frequent contact between the protrusion 132 and the third protective sub-part 143. Simultaneously, the protrusion of the arc-shaped portion 1431 can adapt to different machining errors in the mounting groove 1121, ensuring reliable protection in various scenarios.

[0061] Please combine Figure 6 , Figure 7 and Figure 8 ;in, Figure 6 This is a second top view schematic diagram of the backlight module provided in an embodiment of the present utility model; Figure 7 Provided for the embodiments of this utility model Figure 6 The first enlarged schematic diagram at point C; Figure 8 Provided for the embodiments of this utility model Figure 6 A schematic diagram of the partial structure of the backlight module in the D direction.

[0062] In one embodiment, the protective portion 14 includes a first planar portion 144 and a second planar portion 145 disposed opposite to each other, and a bent portion 146 connecting the first planar portion 144 and the second planar portion 145. The first planar portion 144 is connected to the side wall of the mounting groove 1121. The bent portion 146 is disposed on the side of the protective portion 14 near the protrusion 132. The second planar portion 145 is located on the side of the side plate 112 near the optical film body 131, or the second planar portion 145 is located on the side of the side plate 112 away from the optical film body 131.

[0063] Specifically, one end of the first flat portion 144 is connected to the side wall of the mounting groove 1121, and the other end of the first flat portion 144 is connected to one end of the bent portion 146. The other end of the bent portion 146 is bent to the side of the first flat portion 144 near the optical film body 131, and the other end of the bent portion 146 is connected to one end of the second flat portion 145. The other end of the second flat portion 145 extends from the bent portion 146 in a direction away from the protrusion 132. The extension direction of the second flat portion 145 is parallel to the extension direction of the first flat portion 144, and the bent portion 146 protrudes in a direction close to the protrusion 132.

[0064] It is understood that in this embodiment, the bent portion 146 is not only part of the protective portion 14, but also serves as the sidewall of the mounting groove 1121. Since the bent portion 146 connects the first flat portion 144 and the second flat portion 145 through a bending transition, the side of the bent portion 146 near the protrusion 132 forms an arc-shaped contact end, thereby reducing the friction force and contact point pressure between the sidewall of the mounting groove 1121 and the protrusion 132, reducing the wear or damage to the protrusion 132 caused by shaking, and thus extending the service life of the optical film layer 13 and improving overall reliability.

[0065] It should be noted that, in this embodiment, the bending of the other end of the bent portion 146 to the side of the first flat portion 144 near the optical film body 131 refers to a specific embodiment. This design is to explain how the protective portion 14 is configured on the side wall of the mounting groove 1121 and how it cooperates with other components. In practical applications, the specific bending direction or bending angle of the bent portion 146 can be adjusted according to different actual needs. For example, in another embodiment, the other end of the bent portion 146 is bent to the side of the first flat portion 144 away from the optical film body 131, and the second flat portion 145 is located on the side of the first flat portion 144 away from the optical film body 131.

[0066] Please continue to combine Figures 6 to 8 In one embodiment, the bent portion 146 is spaced apart from the protrusion 132, thereby avoiding direct contact between the protrusion 132 and the sidewall of the mounting groove 1121, reducing wear or damage to the protrusion 132 caused by shaking, and thus extending the service life of the optical film layer 13 and improving overall reliability.

[0067] The second planar portion 145 is spaced apart from the optical film body 131, thereby providing a reserved space between the optical film body 131 and the second planar portion. The optical film body 131 can move appropriately within the reserved space, avoiding compression of the movement space due to the restriction of the second planar portion. At the same time, the second planar portion is not directly attached to the optical film body 131, which simplifies the precise positioning requirements during the installation of the optical film layer 13, allows for a certain tolerance range, and increases the convenience of installation operation.

[0068] Please continue to combine Figures 6 to 8 In one embodiment, the protective part 14 and the side plate 112 are integrally formed, thereby avoiding the complex process of separately manufacturing and assembling the protective part 14 and the side plate 112. By integrally forming the protective part 14 and the side plate 112, the assembly steps of the backlight module 1 are simplified, the complexity of the production process is reduced, and thus the production efficiency is improved.

[0069] Meanwhile, the protective part 14 and the side plate 112 may have assembly errors (such as inaccurate positioning, inconsistent gaps, etc.), which may cause the installation of the protective part 14 to be unstable. By integral molding, the dimensional accuracy between the protective part 14 and the side plate 112 can be better controlled, avoiding problems caused by assembly errors, ensuring that the protective part 14 can play a stable role in actual use, reducing problems such as loosening, misalignment or falling off of components that may be caused by separate design, thereby improving the stability and durability of the backlight module 1.

[0070] Please see Figure 9 This is a schematic diagram of the structure of the display device provided in an embodiment of the present utility model.

[0071] This embodiment also provides a display device 2, which includes a display panel 21 and a backlight module 1 as described in any of the above embodiments. The backlight module 1 is disposed on the backlight side of the display panel 21, and the display panel 21 includes, but is not limited to, a liquid crystal display panel.

[0072] It is understood that the backlight module 1 has been described in detail in the above embodiments, and will not be repeated here.

[0073] The display device 2 may further include a frame 22, which surrounds the back plate 11 of the backlight module 1. The frame 22 includes a fixing part 221 for fixing the frame 22 to the back plate 11 and a support part 222 for supporting the display panel 21. The fixing part 221 is located on the side of the side plate 112 away from the light guide plate 12. The support part 222 is located on the side of the optical film layer 13 away from the bottom plate 111. The support part 222 can be fixedly connected to the display panel 21 by double-sided tape, and the side of the support part 222 near the optical film layer 13 is flush with the side of the optical film layer 13 near the support part 222.

[0074] In specific applications, the display device 2 can be at least one of the following devices with display functions: smartphone, tablet computer, mobile phone, video phone, e-book reader, desktop computer, laptop computer, netbook, workstation, server, personal digital assistant, portable media player, MP3 player, mobile medical device, camera, game console, digital camera, car navigation system, electronic billboard, ATM or wearable device.

[0075] 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.

[0076] The foregoing has provided a detailed description of a backlight module and display device provided by the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A backlight module, characterized in that, include: The back plate includes a bottom plate and a plurality of side plates, the plurality of side plates being arranged around the edge of the bottom plate to form a receiving cavity, and at least one of the side plates having a mounting groove on the side away from the bottom plate; An optical film layer includes an optical film body and a protrusion connected to each other. The optical film body is located within the receiving cavity, and the protrusion extends from the optical film body toward the side plate, with at least a portion of the protrusion disposed within the mounting groove. as well as A protective part is located between the protrusion and the side wall of the mounting groove, and the protective part is spaced apart from the protrusion.

2. The backlight module according to claim 1, characterized in that, The protection part includes a first protection sub-part, a second protection sub-part disposed opposite to the first protection sub-part, and a third protection sub-part connected between the first protection sub-part and the second protection sub-part; The first protective sub-part is disposed between the side plate and the optical film body, the second protective sub-part is disposed on the side of the side plate away from the optical film body, and the third protective sub-part is disposed between the side wall of the mounting groove and the protrusion.

3. The backlight module according to claim 2, characterized in that, The third protective sub-part includes an arc portion that protrudes towards the protrusion and is spaced apart from the protrusion.

4. The backlight module according to any one of claims 1 to 3, characterized in that, The protective part is separately disposed from the optical film layer.

5. The backlight module according to any one of claims 1 to 3, characterized in that, The thickness of the protective part is less than or equal to 0.05 mm.

6. The backlight module according to any one of claims 1 to 3, characterized in that, The protective part is one of polyester film, polytetrafluoroethylene coating, elastic coating, and foam.

7. The backlight module according to claim 1, characterized in that, The protective portion includes a first planar portion and a second planar portion disposed opposite to each other, and a bent portion connecting the first planar portion and the second planar portion. The first planar portion is connected to the side wall of the mounting groove. The bent portion is disposed on the side of the protective portion near the protrusion. The second planar portion is located on the side of the side plate near the optical film body, or the second planar portion is located on the side of the side plate away from the optical film body.

8. The backlight module according to claim 7, characterized in that, The bent portion and the protruding portion are spaced apart, the second flat portion is located on the side of the first flat portion close to the optical film body, and the second flat portion is spaced apart from the optical film body.

9. The backlight module according to claim 7, characterized in that, The protective part and the side plate are integrally formed.

10. A display device, characterized in that, Includes the backlight module as described in any one of claims 1 to 9.

Images