Liquid crystal screen backlight module

Abstract

The utility model discloses a liquid crystal screen backlight module which comprises an optical film assembly and a structural frame, the periphery of the side face of the optical film assembly is wrapped with a frame, and clamping pieces are fixed to the side face of the frame through screws. According to the utility model, the optical film assembly with the frame is arranged at the periphery of the opening of the structural frame, so that the optical film assembly is attached to the buffer frame adhered to the inner side surface of the structural frame, and in the process, the optical film assembly is pressed; a clamping piece fixed on the side face of the optical film assembly through a screw is made to make contact with a clamping column welded to the inner side face of a structural frame, then the spherical end of the clamping column can penetrate through the clamping piece of a U-shaped structure in the pressed deformation state, and two protruding parts integrally arranged on the inner side face of the clamping piece abut against the surface of the lower portion of the clamping column. Compared with a traditional installation mode that fixed connection is matched with gluing, the optical film assembly fixing device has the advantages that the optical film assembly can be rapidly detached and replaced, and maintenance, disassembly and assembly are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal screens, in particular to a liquid crystal screen backlight module. Background Art

[0002] With the continuous development of liquid crystal display technology, people's visual demand and reliability for liquid crystal display products are getting higher and higher. Liquid crystal displays are generally composed of three main components: liquid crystal panel, backlight module and driving circuit. The quality of the backlight module design directly determines the display effect of the liquid crystal display. The backlight module is mainly assembled by light source, light guide plate, optical film assembly and outer frame, among which the design of optical film assembly is particularly important for the backlight module. The optical film assembly is actually composed of layers of optical film materials, which are placed directly under the liquid crystal panel. Through them, the light is brightened and evenly distributed. In the optical film group of general liquid crystal displays, the commonly seen optical films are: DBEF (polarized brightness enhancement film), BEF (prism film), diffusion film, etc.

[0003] After searching, patent number CN110928052A discloses a liquid crystal screen backlight module, wherein the liquid crystal screen backlight module comprises: an optical film assembly and a structural member, wherein the optical film assembly is centrally arranged in the structural member; wherein a plurality of buffer members are arranged at intervals around the optical film assembly and between the structural member, and the buffer members are fixedly connected to the structural member. The liquid crystal screen backlight module overcomes the problem that the optical film assembly in the prior art is very prone to high-temperature film wrinkles and low-temperature film wrinkles when used in an environment with a large temperature difference, and is very prone to displacement during vibration, causing the film edge to shine, which directly affects the display effect of the liquid crystal.

[0004] In the above scheme, the connection between the optical film assembly and the structural member is achieved by fixing the buffer member to the structural member to prevent high-temperature film wrinkles and low-temperature film wrinkles. However, since the optical film assembly and the structural member of this scheme need to be connected with glue on the basis of the buffer member connection, it is difficult to disassemble the optical film assembly and the structural member at a later time, which is not conducive to the rapid maintenance of the optical film assembly.

[0005] To this end, a liquid crystal screen backlight module is proposed, which has the advantage of convenient disassembly and assembly, thereby solving the problems in the above-mentioned background technology. Utility Model Content

[0006] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a liquid crystal screen backlight module.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a liquid crystal screen backlight module, comprising an optical film assembly and a structural frame, the side of the optical film assembly is covered with a frame, and the side of the frame is fixed with a clamping piece by screws, the inner side of the clamping piece is integrally provided with a convex portion, the periphery of the optical film assembly is provided with a structural frame, and the surface of the structural frame is provided with an opening corresponding to the optical film assembly, the periphery of the opening is bonded with a buffer frame by glue, and the buffer frame is in contact with the optical film assembly, the inner side of the structural frame is welded with a clamping column, and the top of the clamping column is integrally provided with a spherical end, the clamping piece is covered on the periphery of the clamping column, and the convex portion of the clamping piece is abutted against the lower surface of the clamping column.

[0008] As a further description of the above technical solution: the optical film assembly is composed of a vibration mode brightness enhancement film, a prism film and a diffusion plate arranged in sequence, and the side of the optical film assembly is connected to the frame through glue.

[0009] As a further description of the above technical solution: a plurality of clips are fixed to the side of the frame by screws, and the plurality of clips are all U-shaped structures, and two protruding parts are arranged on the inner side surfaces of the plurality of clips.

[0010] As a further description of the above technical solution: the buffer frame is a rectangular structure as a whole, and the thickness of the buffer frame is 40-60 mm.

[0011] As a further description of the above technical solution: the optical film assembly is centrally arranged inside the structural frame, and the installation position of the optical film assembly is opposite to the opening.

[0012] As a further description of the above technical solution: the clamping posts and the clamping parts are both provided in plurality, and the plurality of clamping posts and the clamping parts correspond one to one.

[0013] The utility model has the following beneficial effects:

[0014] In the utility model, an optical film assembly with a frame is placed on the periphery of the opening of a structural frame, so that the optical film assembly is fitted with a buffer frame bonded to the inner side of the structural frame. In this process, by pressing the optical film assembly, the clamping piece fixed by screws on the side of the optical film assembly is brought into contact with the clamping column welded on the inner side of the structural frame, and then the spherical end of the clamping column is able to pass through the clamping piece of the U-shaped structure under pressure and deformation, so that two raised parts integrally provided on the inner side of the clamping piece abut against the lower surface of the clamping column, thereby realizing the clamping fixation of the optical film assembly. Compared with the traditional fixed connection and gluing installation method, it is conducive to the rapid removal and replacement of the optical film assembly, and has the advantages of convenient maintenance and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a structural schematic diagram of a liquid crystal screen backlight module of the utility model;

[0016] Figure 2 This is a dissection diagram of a liquid crystal screen backlight module of the utility model;

[0017] Figure 3 The utility model is a schematic diagram of the structure of an optical film component of a liquid crystal screen backlight module.

[0018] Legend:

[0019] 1. Optical film assembly; 2. Structural frame; 3. Frame; 4. Snap-in column; 5. Snap-in piece; 6. Raised portion; 7. Opening; 8. Buffer frame; 9. Spherical end. DETAILED DESCRIPTION

[0020] 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 in 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.

[0021] According to an embodiment of the utility model, a liquid crystal screen backlight module is provided.

[0022] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-3As shown, a liquid crystal screen backlight module according to an embodiment of the utility model includes an optical film assembly 1 and a structural frame 2, the side of the optical film assembly 1 is covered with a frame 3, and the side of the frame 3 is fixed with a clamping member 5 by screws, and the inner side of the clamping member 5 is integrally provided with a raised portion 6, the periphery of the optical film assembly 1 is provided with the structural frame 2, and the surface of the structural frame 2 is provided with an opening 7 corresponding to the optical film assembly 1, and the periphery of the opening 7 is bonded with a buffer frame 8 by glue, and the buffer frame 8 is in contact with the optical film assembly 1, the inner side of the structural frame 2 is welded with a clamping column 4, and the top of the clamping column 4 is integrally provided with a spherical end 9, the clamping member 5 is covered on the periphery of the clamping column 4, and the raised portion 6 of the clamping member 5 is against the lower surface of the clamping column 4, and the optical film assembly 1 with the frame 3 is placed in the opening of the structural frame 2. The outer periphery of the opening 7 causes the optical film assembly 1 to fit with the buffer frame 8 bonded to the inner side of the structural frame 2. In this process, by pressing the optical film assembly 1, the clamping piece 5 fixed by screws on the side of the optical film assembly 1 is caused to contact with the clamping column 4 welded on the inner side of the structural frame 2, and then the U-shaped structure of the clamping piece 5 is compressed and deformed to allow the spherical end 9 of the clamping column 4 to pass through, that is, the internal space of the clamping piece 5 in the compressed and deformed state is expanded. When the spherical end 9 of the clamping column 4 passes through the clamping piece 5, after the clamping piece 5 shrinks and resets, the two convex parts 6 integrally arranged on the inner side of the clamping piece 5 are abutted against the lower surface of the clamping column 4, so that the clamping and fixing of the optical film assembly 1 is realized, which is convenient for the maintenance and disassembly of the optical film assembly 1. The parts not involved in the device are the same as the prior art or can be realized by using the prior art.

[0023] In one embodiment, the optical film assembly 1 is composed of a vibration mode brightness enhancement film, a prism film and a diffusion plate arranged in sequence, and the side of the optical film assembly 1 is connected to the frame 3 by glue, that is, the optical film assembly 1 uses the existing structure, wherein the setting of the frame enables it to have a similar effect to a shading tape, which can prevent light scattering around the optical film assembly 1.

[0024] In one embodiment, a plurality of clips 5 are fixed to the side of the frame 3 by screws, and the plurality of clips 5 are all U-shaped structures, and two raised portions 6 are provided on the inner sides of the plurality of clips 5. The two raised portions 6 of the clips 5 have a limiting effect, which helps to increase the reliability of the connection between the clip columns 4 and the clips 5.

[0025] In one embodiment, the buffer frame 8 is a rectangular structure as a whole, and the thickness of the buffer frame 8 is 40-60 mm. The buffer frame 8 can be used to prevent the mutual influence caused by the expansion and contraction of the optical film assembly 1 and the structural frame 2 under different temperature environments. The material of the buffer frame 8 can be honeycomb cotton.

[0026] In one embodiment, the optical film assembly 1 is centrally disposed inside the structural frame 2, and the installation position of the optical film assembly 1 is opposite to the opening 7, that is, the opening 7 is centrally opened on the surface of the structural frame 2, and the optical film assembly 1 is centrally disposed inside the structural frame 2, so as to increase the visual beauty of the optical film assembly 1 and facilitate the normal operation of the optical film assembly 1.

[0027] In one embodiment, a plurality of the clamping posts 4 and the clamping parts 5 are provided, and the plurality of clamping posts 4 and the clamping parts 5 correspond one to one. The reliability of the installation of the optical film assembly 1 can be maintained by the plurality of clamping posts 4 and the clamping parts 5.

[0028] Working principle:

[0029] When in use, the optical film assembly 1 with the frame 3 is placed outside the opening 7 of the structural frame 2, so that the optical film assembly 1 is fitted with the buffer frame 8 bonded to the inner side of the structural frame 2. In this process, by pressing the optical film assembly 1, the clamping piece 5 fixed by screws on the side of the optical film assembly 1 is brought into contact with the clamping column 4 welded on the inner side of the structural frame 2, and then the U-shaped structure of the clamping piece 5 is under pressure and deformation, allowing the spherical end 9 of the clamping column 4 to pass through, that is, the internal space of the clamping piece 5 under pressure and deformation is expanded. When the spherical end 9 of the clamping column 4 passes through the clamping piece 5, after the clamping piece 5 shrinks and resets, the two convex parts 6 integrally arranged on the inner side of the clamping piece 5 are abutted against the lower surface of the clamping column 4, thereby realizing the clamping and fixing of the optical film assembly 1. Compared with the traditional fixed and adhesive installation method, it is beneficial to the assembly and disassembly of the optical film assembly 1, and convenient for the maintenance and disassembly of the optical film assembly 1.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid crystal screen backlight module, comprising an optical film assembly (1) and a structural frame (2), characterized in that: The side surface of the optical film assembly (1) is covered with a frame (3) around the periphery, and a clamping member (5) is fixed to the side surface of the frame (3) by screws, and a protruding portion (6) is integrally provided on the inner side surface of the clamping member (5). The periphery of the optical film assembly (1) is provided with a structural frame (2), and an opening (7) is provided on the surface of the structural frame (2) corresponding to the optical film assembly (1), and a buffer frame (8) is bonded to the periphery of the opening (7) by glue, and the buffer frame (8) is in contact with the optical film assembly (1), and a clamping column (4) is welded to the inner side surface of the structural frame (2), and a spherical end (9) is integrally provided on the top of the clamping column (4), and the clamping member (5) is covered on the periphery of the clamping column (4), and the protruding portion (6) of the clamping member (5) abuts against the lower surface of the clamping column (4).

2. The liquid crystal screen backlight module according to claim 1, characterized in that: The optical film assembly (1) is composed of a sequentially arranged vibration mode brightness enhancement film, a prism film and a diffusion plate, and the side surface of the optical film assembly (1) is connected to the frame (3) via glue.

3. The liquid crystal screen backlight module according to claim 1, characterized in that: A plurality of clamping parts (5) are fixed to the side surface of the frame (3) by means of screws, and the plurality of clamping parts (5) are all U-shaped structures, and the inner side surfaces of the plurality of clamping parts (5) are all provided with two protruding parts (6).

4. The liquid crystal screen backlight module according to claim 1, characterized in that: The buffer frame (8) is a rectangular structure as a whole, and the thickness of the buffer frame (8) is 40-60 mm.

5. The liquid crystal screen backlight module according to claim 1, characterized in that: The optical film assembly (1) is centrally arranged inside the structural frame (2), and the installation position of the optical film assembly (1) is opposite to the opening (7).

6. The liquid crystal screen backlight module according to claim 1, characterized in that: The clamping posts (4) and the clamping parts (5) are both provided in plurality, and the plurality of clamping posts (4) and the clamping parts (5) correspond one to one.

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