Backlight module and display device thereof

Abstract

The utility model belongs to the display field, and discloses a backlight module and a display device thereof. The backlight module includes a back plate and a limiting plate; the back plate is concavely provided with a back plate groove, at least one of the side walls of the back plate groove is a mounting side wall, at least another of the side walls is a limiting side wall, a limiting arm is formed on the inner side surface of the limiting side wall, and the limiting arm and the bottom wall surface of the back plate groove are used to jointly limit the optical film assembly; the limiting plate is arranged corresponding to the mounting side wall, and is used to jointly limit the optical film assembly with the back plate. In the backlight module provided by the utility model, the side wall of the back plate groove is divided into two types: the mounting side wall and the limiting side wall, and the limiting side wall and the mounting side wall respectively limit the optical film assembly in the back plate groove through the limiting arm and the limiting plate, so that the setting of the overall middle frame can be eliminated, the production and assembly costs of the backlight module can be saved, and the rapid installation and replacement of the backlight module can be facilitated.

Description

Technical Field

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

[0002] With the development of optoelectronic display technology and semiconductor manufacturing technology, display devices have become one of people's favorite electrical devices due to their advantages of lightness, energy saving, high display quality, and mature and stable manufacturing process. They enrich people's spare time and spiritual world and become an indispensable part of people's lives. However, the current display structure is complex, resulting in high design cost / material cost / production cost, and the product appearance is fixed and difficult to change.

[0003] In the existing display structure, during the assembly process, the middle frame needs to be placed on the back panel, and then the processed OC (glass panel) is installed in the middle frame; finally, the front frame and the rear shell are installed on the back panel. Among them, the middle frame plays three main roles in the display structure: fixing the OC, pressing the optical film, and connecting the back panel. However, the existing middle frame design makes it difficult to disassemble the entire backlight assembly, and the process and manufacturing cost are relatively high, which is not convenient for the rapid installation and replacement of the backlight module. Utility Model Content

[0004] The main purpose of the utility model is to provide a backlight module and a display device thereof, aiming to solve the problem that the backlight module is inconvenient to install and replace.

[0005] To achieve the above object, the utility model provides a backlight module, comprising:

[0006] A back plate, with a back plate groove concavely formed therein, at least one of the side walls of the back plate groove being a mounting side wall, at least another of the side walls being a limiting side wall, a limiting arm being formed on the inner side surface of the limiting side wall, the limiting arm and the bottom wall surface of the back plate groove being used to jointly limit the optical film assembly; and,

[0007] A limiting plate is arranged corresponding to the installation side wall, and is used to limit the optical film assembly together with the back plate.

[0008] Optionally, a detachable connecting structure is formed between the limiting plate and the mounting side wall, and the detachable connecting structure includes a snap protrusion and a snap groove that are arranged to cooperate with each other, and the snap protrusion is snap-installed into the snap groove, and one of the snap protrusion and the snap groove is arranged on the limiting plate, and the other is arranged on the mounting side wall.

[0009] Optionally, the limiting plate includes a side panel body and a middle frame arm extending from the side wall surface of the side panel body, the side panel body is installed on the outer surface of the installation side wall, the middle frame arm extends to be opposite to the bottom wall surface of the back panel groove, and jointly limits the optical film assembly between the middle frame arm and the bottom wall surface of the back panel groove.

[0010] Optionally, the backlight module further includes a front frame, and the front frame is fixedly sleeved on the periphery of the back plate.

[0011] Optionally, the front frame and the outer side surfaces of the limiting side walls are bonded together.

[0012] Optionally, the backlight module further includes a buffer pad, which is arranged on the inner wall surface of the back panel groove to protect the optical film assembly.

[0013] Optionally, the backlight module further includes an optical film assembly, and the optical film assembly is installed in the back panel groove.

[0014] Optionally, the backlight module further includes a glass panel, and the glass panel is mounted on the limiting arm and the limiting plate.

[0015] Optionally, the backlight module further includes a surface frame, which is sleeved on the periphery of the glass panel and arranged corresponding to the limiting plate.

[0016] The utility model also provides a display device, characterized by comprising a backlight module according to any one of the above items.

[0017] In the backlight module provided by the utility model, a backplate groove is recessed on the backplate, wherein the side walls of the backplate groove are divided into two types: the installation side wall and the limiting side wall, a limiting arm is arranged on the limiting side wall, and a limiting plate is arranged at the installation side wall, and the limiting side wall and the installation side wall respectively limit the optical film assembly in the backplate groove through the limiting arm and the limiting plate, thereby eliminating the setting of the overall middle frame, saving the production and assembly cost of the backlight module, and facilitating the rapid installation and replacement of the backlight module. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a side view cross-sectional structural diagram of a backlight module provided by an embodiment of the utility model;

[0019] Figure 2 yes Figure 1 A schematic diagram of the local structure of the back panel corner of the back panel provided in;

[0020] Figure 3 yes Figure 1 Schematic diagram of the matching structure between the middle back plate and the front frame;

[0021] Figure 4 yes Figure 1 A three-dimensional exploded view of an embodiment of a backlight module;

[0022] Figure 5 It is a three-dimensional exploded view of a display device provided by an embodiment of the utility model.

[0023] Description of Figure Numbers:

[0024] Label name Label name 1000 Display device 21 Side panel body 100 Backlight module 22 Middle frame arm 1 Back Plate 3 Front frame 11 Install the side walls 4 Glass Panel 12 Limit side wall 5 Face frame 121 Limiting arm 6 Back shell 2 Limiting plate 7 Mounting Bracket

[0025] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0029] With the development of optoelectronic display technology and semiconductor manufacturing technology, display devices have become one of people's favorite electrical devices due to their advantages of lightness, energy saving, high display quality, and mature and stable manufacturing process. They enrich people's spare time and spiritual world and become an indispensable part of people's lives. However, the current display structure is complex, resulting in high design cost / material cost / production cost, and the product appearance is fixed and difficult to change.

[0030] In the existing display structure, during the assembly process, the middle frame needs to be placed on the back panel, and then the processed OC (glass panel) is installed in the middle frame; finally, the front frame and the rear shell are installed on the back panel. Among them, the middle frame plays three main roles in the display structure: fixing the OC, pressing the optical film, and connecting the back panel. However, the existing middle frame design makes it difficult to disassemble the entire backlight assembly, and the process and manufacturing cost are relatively high, which is not convenient for the rapid installation and replacement of the backlight module.

[0031] See also Figure 1 to Figure 2 The utility model discloses a backlight module 100, comprising a back plate 1 and a limiting plate 2; the back plate 1 is concavely provided with a back plate groove, at least one of the side walls of the back plate groove is a mounting side wall 11, at least another of the side walls is a limiting side wall 12, a limiting arm 121 is formed on the inner side surface of the limiting side wall 12, and the limiting arm 121 and the bottom wall surface of the back plate groove are used to jointly limit an optical film assembly; the limiting plate 2 is arranged corresponding to the mounting side wall 11, and is used to jointly limit the optical film assembly with the back plate.

[0032] In the backlight module 100 provided by the utility model, a backplane groove is recessed on the backplane 1, wherein the side walls of the backplane groove are divided into two types, namely the installation side wall 11 and the limiting side wall 12, a limiting arm 121 is arranged on the limiting side wall 12, and a limiting plate 2 is arranged at the installation side wall 11, and the limiting side wall 12 and the installation side wall 11 respectively limit the optical film assembly in the backplane groove through the limiting arm 121 and the limiting plate 2, thereby eliminating the setting of the overall middle frame, saving the production and assembly cost of the backlight module, and facilitating the rapid installation and replacement of the backlight module.

[0033] Among them, when installing the optical film, it is necessary to install the optical film assembly into the back panel groove, first install the optical film assembly into the back panel groove from the installation side wall 11, so that the optical film assembly is first limited by the limiting arm 121, and then install the limiting plate 2 on the installation side wall 11, and limit the optical film assembly at the installation side wall. In this embodiment, the optical film assembly in the back panel groove is limited by the limiting arm 121 and the limiting plate 2, and the setting of the middle frame is cancelled.

[0034] In the utility model, one of the side walls of the back panel groove may be the installation side wall 11, or multiple side walls may be the installation side walls 11; the limiting plate 2 is arranged corresponding to the installation side wall 11; wherein, in the case of multiple installation side walls 11, multiple limiting plates 2 are also arranged accordingly.

[0035] In addition, it should be noted that the installation side wall 11 is not specifically limited to a straight side wall. Corresponding to different panel shapes, the installation side wall 11 can be set in an arc shape or other special shape, as long as the back panel can adapt to the subsequent display structure.

[0036] It should be noted that the limit plate 2 is arranged corresponding to the installation side wall 11, and there are many ways to install the limit plate 2 on the installation side wall 11, such as directly installing it on the installation side wall 11 by bonding, as long as it can clamp the optical film assembly together with the back plate.

[0037] Furthermore, in this embodiment, a detachable connection structure is formed between the limit plate 2 and the mounting side wall 11, and the detachable connection structure includes a snap-on protrusion and a snap-on groove that are arranged in cooperation with each other, and the snap-on protrusion is snap-on mounted in the snap-on groove, and one of the snap-on protrusion and the snap-on groove is provided on the limit plate 2, and the other is provided on the mounting side wall 11. The limit plate 2 is mounted on the mounting side wall 11 by snap-on, and there is no need to modify the existing back plate connection structure. The limit plate 2 can be directly adapted to the mounting structure on the existing back plate, and the mounting method is simple and reliable.

[0038] On the other hand, the limit plate 2 is used to limit and clamp the optical film assembly between the back panel. The limit plate 2 can be directly installed on the free end surface of the installation side wall 11, opposite to the bottom wall surface of the back panel groove to clamp the optical film together with the back panel.

[0039] In this embodiment, the limiting plate 2 includes a side plate body 21 and a middle frame arm 22 extending from the side wall surface of the side plate body 21. The side plate body 21 is installed on the outer side surface of the mounting side wall 11. The middle frame arm 22 extends to be arranged opposite to the bottom wall surface of the back plate groove, and the optical film assembly is limited by the bottom wall surface of the back plate groove. In this embodiment, the limiting plate 2 includes two parts. Through the design of the side plate body 21 and the middle frame arm 22, the limiting plate 2 is similar to the cross-section of the traditional middle frame, which is convenient for adapting to the existing assembly production line. The structure installed on the mounting side wall is more stable, and the optical film assembly can be limited and clamped between the back plate groove.

[0040] It should be noted that the material of the limit plate 2 includes ABS (terpolymer of acrylonitrile, butadiene and styrene) + PC (polycarbonate), or PC (polycarbonate); the material of the back plate includes SECC (electrogalvanized steel plate) or SGCC (hot-dip galvanized steel plate), and the molding method is reliable.

[0041] In addition, in this embodiment, the limiting arm 121 is formed by bending the free end of the limiting side wall 12 and is an integrated design to ensure structural strength.

[0042] On the other hand, see Figure 3 In the backlight module 100 provided by the utility model, the backlight module 100 further includes a front frame 3, and the front frame 3 is fixedly sleeved on the periphery of the back plate 1. In this embodiment, since there is no middle frame design, the front frame 3 can be directly installed to the periphery of the back plate 1, simplifying the installation process, and the operation steps are more concise when the front frame is installed or replaced later, and the replacement of the front frame is more convenient, without considering the linkage installation relationship between the middle frame and the back plate.

[0043] It should be noted that there are many ways to install the front frame 3 on the back plate 1, such as installing by snap fastening or the like.

[0044] Further, in the embodiment provided by the utility model, the front frame 3 and the outer side surface of the limiting side wall 12 are bonded and connected. In this embodiment, the front frame 3 and the limiting side wall 12 are fixed by bonding, and the fixing method is simple and reliable, and it is convenient and quick to disassemble. There is no need to set a snap structure on the outer side wall corresponding to the limiting side wall 12, which can improve the structural strength of the back plate.

[0045] It should be noted that the front frame 3 and the outer side surface of the limiting side wall 12 can be fixed and bonded by 3M glue, and the fixing effect is good.

[0046] In addition, the front frame 3 is a decorative front frame, and the material of the front frame includes ABS+PC, or PVC (polyvinyl chloride), or ABS.

[0047] It should be noted that, in the embodiment provided by the present invention, the front frame 3 is installed on the outer surface of the limiting side wall 12, wherein an installation notch is formed on the front frame 3 corresponding to the installation side wall 11 to facilitate the installation of the limiting plate without causing installation interference with the limiting plate.

[0048] In the embodiment provided by the utility model, the backlight module includes a back plate 1, a limit plate 2, and a front frame plate 3;

[0049] The back plate 1 has a mounting side wall 11 and three limiting side walls 12;

[0050] The limiting plate 2 is installed on the installation side wall 11, and limits the optical film together with the bottom wall surface of the back plate groove;

[0051] The front frame plate 3 is formed with an installation notch corresponding to the installation side wall 11 . The front frame plate 3 is installed on the three limiting side walls 12 and is connected to the limiting side walls 12 by gluing.

[0052] On the other hand, the backlight module 100 further includes a buffer pad, which is arranged on the inner wall surface of the back plate groove to protect the optical film assembly. In this embodiment, the buffer pad is filled in the back plate groove to ensure that the optical film assembly can be fixed in the back plate groove and prevent the optical film assembly from being heated, expanded, squeezed, and deformed in the plane.

[0053] The buffer pad is arranged on the inner wall surface of the back panel groove and has multiple setting positions. In the embodiment provided by the utility model, the buffer pad is arranged on the inner side surface of the limiting side wall 12; and the buffer pad is arranged on the inner side surface of the limiting arm 121; the buffer pad is used to abut against the optical film assembly arranged in the back panel groove.

[0054] In addition, the buffer pad is made of a variety of materials, such as a foam pad. In the present embodiment, the buffer pad is a silicone pad, so as to protect the optical film assembly in the back panel groove.

[0055] On the other hand, in this embodiment, the backlight module 100 further includes an optical film assembly, and the optical film assembly is installed in the back plate groove to form a complete backlight structure.

[0056] It should be noted that, in this embodiment, the optical film assembly includes a white reflector, a light guide plate, and a film. The specific optical film assembly is not specifically limited here, as long as the normal light-emitting display of the backlight module 100 can be achieved and the brightness meets the requirements.

[0057] In the embodiment provided by the utility model, a white reflector, a light guide plate and a film are sequentially stacked in the back plate groove to form an optical film;

[0058] The optical film is located between the bottom wall of the back panel groove and the limiting arm; and is located between the bottom wall of the back panel groove and the limiting plate, so as to limit the optical film in the back panel groove and prevent it from falling off.

[0059] On the other hand, the backlight module 100 further includes a glass panel 4, which is mounted on the limiting arm 121 and the limiting plate 2. In this embodiment, since the middle frame is eliminated, the glass panel 4 can be directly placed on the limiting arm 121 and the limiting plate 2 to ensure the normal installation of the glass panel 4.

[0060] In an embodiment provided by the present invention, the limit plate 2 is directly mounted on the mounting side wall and is arranged opposite to the bottom wall of the back panel groove. The glass panel 4 is mounted on the bottom wall of the limit plate 2 facing away from the back panel groove and is mounted on the limit arm 121. The glass panel 4 is jointly supported by the limit arm 121 and the limit plate 2.

[0061] In another embodiment provided by the present invention, the limiting plate 2 includes a side panel body 21 and a middle frame arm 22; the side panel body 21 is installed on the installation side wall 11, and the middle frame arm 22 extends to be opposite to the bottom wall surface of the back panel groove; the glass panel 4 is installed on the middle frame arm 22 and on the limiting arm 121, and the glass panel 4 is jointly supported by the middle frame arm 22 and the limiting arm 121.

[0062] For further information, see Figure 4 The backlight module 100 further includes a face frame 5, which is sleeved on the periphery of the glass panel 4 and is arranged corresponding to the limit plate 2. In this embodiment, the face frame 5 protects the periphery of the glass panel 4, can shield the electrical connection part on the glass panel 4, and can be further fixed to the limit plate 2 to ensure the installation strength of the glass panel 4.

[0063] It should be noted that, in the embodiment provided by the present invention, the cross-section of the face frame 5 is L-shaped, one side of the face frame 5 is covered on the glass panel 4, and the other side extends to be fixedly connected with the limiting plate 2; as long as the face frame 5 can fix the side of the glass panel 4 corresponding to the limiting plate 2 on the limiting plate 2, it will be sufficient.

[0064] Based on the above-mentioned backlight module 100 , the present invention provides a specific embodiment.

[0065] In this embodiment, the backlight module 100 includes a back plate 1, a limiting plate 2, a front frame 3, a glass panel 4, a face frame 5 and an optical film.

[0066] A back plate groove is concavely provided on the back plate 1 , and the side walls around the back plate groove respectively form a mounting side wall 11 and three limiting side walls 12 ; wherein the limiting arms 121 are formed on the inner side surfaces of the three limiting side walls 12 .

[0067] From the installation side wall 11, a white reflector, a light guide plate and a film are installed in the back plate groove in sequence, so that an optical film assembly is installed in the back plate groove.

[0068] A buffer pad is filled between the back plate groove and the optical film assembly to protect the optical film;

[0069] In addition, the limiting plate 2 includes the side plate body 21 and the middle frame arm 22; the side plate body 21 is mounted on the mounting side wall 11 by means of a buckle protrusion and a buckle groove that cooperate with each other, and the middle frame arm 22 is extended to be arranged opposite to the bottom wall surface of the back plate groove, so as to clamp and limit the optical film assembly between the middle frame arm and the back plate groove;

[0070] After the installation of the limiting plate 2 is completed, the front frame 3 is installed. The front frame 3 has a mounting notch formed therein corresponding to the limiting plate 2. The front frame 3 is mounted on the outer side walls of the three limiting side walls 12 by gluing to achieve installation protection for the back plate 1.

[0071] At the same time, a glass panel is placed on the middle frame arm 22 and the limiting arm 121. Similarly, the glass panel 4 is mounted on the middle frame arm 22 and the limiting arm 121 by gluing.

[0072] Finally, corresponding to the installation notch of the front frame 3, the face frame 5 is installed on the side wall of the glass panel 4 and installed on the limiting plate 2; wherein, the face frame 5 and the glass panel 4 are installed by gluing, and the face frame 5 and the limiting plate 2 are installed by gluing.

[0073] Based on the above-mentioned backlight module 100, the present invention further provides a display device 1000, which includes all the technical features of the backlight module 100, and thus also has the technical effects brought by all the above-mentioned technical features, which will not be described one by one here.

[0074] See also Figure 5 The display device 1000 further includes a control mainboard mounted on the backlight module 100 to control the backlight module 100 .

[0075] In addition, the display device 1000 further includes a rear case 6 , and the backlight module 100 is mounted on the rear case 6 to protect the backlight module 100 .

[0076] Furthermore, the display device 1000 further includes a mounting bracket 7, and the rear housing 6 is mounted on the mounting bracket 7, so as to form a completed display device.

[0077] It should be noted that the display device 1000 has a variety of implementations, such as a mobile phone, a computer or a television, etc., as long as a back panel limiting optical film assembly is required, and no specific limitation is made here.

[0078] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A backlight module, characterized in that: include: A back plate, with a back plate groove concavely formed therein, at least one of the side walls of the back plate groove being a mounting side wall, at least another of the side walls being a limiting side wall, a limiting arm being formed on the inner side surface of the limiting side wall, the limiting arm and the bottom wall surface of the back plate groove being used to jointly limit the optical film assembly; and, A limiting plate is arranged corresponding to the installation side wall, and is used for limiting the optical film assembly together with the back plate.

2. The backlight module according to claim 1, characterized in that: A detachable connection structure is formed between the limiting plate and the mounting side wall, and the detachable connection structure includes a snap-on protrusion and a snap-on groove that cooperate with each other. The snap-on protrusion is snap-installed into the snap-on groove. One of the snap-on protrusion and the snap-on groove is arranged on the limiting plate, and the other is arranged on the mounting side wall.

3. The backlight module according to claim 1, characterized in that: The limiting plate includes a side plate body and a middle frame arm extending from the side wall surface of the side plate body, the side plate body is installed on the outer side surface of the installation side wall, the middle frame arm extends to be opposite to the bottom wall surface of the back plate groove, and together with the bottom wall surface of the back plate groove, limits the optical film assembly.

4. The backlight module according to claim 1, characterized in that: The backlight module further comprises a front frame, and the front frame is fixedly sleeved on the periphery of the back plate.

5. The backlight module according to claim 4, characterized in that: The front frame and the outer side surface of the limiting side wall are bonded and connected.

6. The backlight module according to claim 1, characterized in that: The backlight module further comprises a buffer pad, which is arranged on the inner wall surface of the back plate groove to protect the optical film assembly.

7. The backlight module according to claim 1, characterized in that: The backlight module further comprises an optical film assembly, and the optical film assembly is installed in the back plate groove.

8. The backlight module according to claim 1, characterized in that: The backlight module further comprises a glass panel, and the glass panel is mounted on the limiting arm and the limiting plate.

9. The backlight module according to claim 8, characterized in that: The backlight module further comprises a surface frame, which is sleeved on the periphery of the glass panel and arranged corresponding to the limiting plate.

10. A display device, characterized in that: It comprises the backlight module according to any one of claims 1 to 9.

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