Supporting structural member, backlight module and liquid crystal display device

Abstract

The utility model discloses a supporting structural member, backlight module and liquid crystal display device, the supporting structural member includes the base, the base is provided with the deformation part, the deformation part includes the upper convex part and the lower concave part, the middle area of the upper convex part concaves downwards to form the lower concave part, the upper convex part is connected with the base, the lower concave part is provided with the stand column, and the stand column is connected with the base. The top end of the stand column protrudes relative to the top end of the upper protruding part. The supporting structural part is novel in structure, when the supporting structural part abuts against the diffusion plate, stable supporting can be provided for the diffusion plate, when the supporting structural part is heated to expand, under the counter-acting force of the diffusion plate, the stand columns abutting against the diffusion plate can retreat, and therefore the risk that the diffusion plate is damaged by the stand columns is greatly reduced, and the service life of the diffusion plate is prolonged. The phenomenon that the diffusion plate is damaged by the supporting structural member is improved, and the service life of the backlight module is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of display equipment, in particular to a supporting structure, a backlight module and a liquid crystal display device. Background Art

[0002] Liquid crystal display devices have the advantages of being thin, light, environmentally friendly, and having high image quality, and are widely used. They include display panels and LED backlight modules that provide light sources for the display panels. Currently, the LED backlight modules on the market are mainly divided into two types according to the light entry method: side-entry type and direct-down type. Among them, the side-entry type is to install the LED light bar as the backlight module around the LCD screen, while the direct-down type is to install the LED light bar as the backlight module under the LCD screen. Relatively speaking, the direct-down LED backlight module has lower cost and higher reliability and is more widely used. In order to achieve a good backlight effect and structural stability, the existing direct-down type uses a diffuser to evenly diffuse the light and support other optical films and liquid crystal glass. For liquid crystal display devices (such as televisions) of 43 inches and above, the area of ​​the diffuser used is generally larger. In order to prevent the diffuser from collapsing and bending, a plurality of supporting structural members are usually configured on the back panel to support the diffuser. Common supporting structural members are made of PC and PMMA.

[0003] When the LCD device is working, a lot of heat is generated inside the device, so that the temperature inside the device rises, and the supporting structure supporting the diffusion plate expands due to the heat, which may damage or even puncture the diffusion plate. At the same time, during transportation, the supporting structure is easily broken due to vibration. If the supporting structure is thickened and reinforced, the shadow will be further deepened, affecting the visual effect and increasing the risk of puncturing the LCD screen. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a supporting structure which will not damage a diffusion plate, and a backlight module and a liquid crystal display device having the supporting structure.

[0005] In order to solve the above technical problems, the first technical solution adopted by the utility model is: a supporting structure, including a base, the base is provided with a deformation portion, the deformation portion includes an upper convex portion and a lower concave portion, the middle area of ​​the upper convex portion is concave to form the lower concave portion, the upper convex portion is connected to the base, and a column is provided at the lower concave portion, and the top end of the column protrudes relative to the top end of the upper convex portion.

[0006] In one embodiment, the bottom end of the recessed portion is arranged higher than the bottom surface of the base.

[0007] In one embodiment, the bottom end of the recessed portion is at least 1 mm higher than the bottom surface of the base.

[0008] In one embodiment, the bottom end of the recessed portion is 1.5 mm to 3 mm higher than the bottom surface of the base.

[0009] In one embodiment, the deformation portion is located in a middle area of ​​the base.

[0010] In one embodiment, the base is connected to a positioning column.

[0011] In one embodiment, the supporting structure is an integral structure formed by integral injection molding.

[0012] In one embodiment, the support structure is made of PC.

[0013] In order to solve the above technical problems, the second technical solution adopted by the present invention is: a backlight module includes the above supporting structure.

[0014] In order to solve the above technical problems, the third technical solution adopted by the present invention is: a liquid crystal display device includes the above backlight module.

[0015] The beneficial effects of the present utility model are as follows: the supporting structure has a novel structure, and when the supporting structure contacts the diffusion plate, it can provide stable support for the diffusion plate, and when the supporting structure expands due to heat, under the reaction force of the diffusion plate, the column contacting the diffusion plate will retreat, thereby greatly reducing the risk of the diffusion plate being damaged by the column, improving the phenomenon of the diffusion plate being damaged by the supporting structure, and helping to extend the service life of the backlight module. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 This is a schematic structural diagram of a support structure of Embodiment 1 of the present utility model;

[0018] Figure 2 It is a front view of the supporting structure of the first embodiment of the present utility model.

[0019] Description of Figure Numbers:

[0020] 1. Base;

[0021] 2. Deformed part; 21. Upper convex part; 22. Lower concave part;

[0022] 3. Column;

[0023] 4. Positioning column. DETAILED DESCRIPTION

[0024] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

[0025] 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.

[0026] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0027] 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 the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0028] In addition, if the meaning of "and / or" appears in the full text is to include three parallel solutions, taking "and / or" as an example, it includes solutions, or solutions, or solutions that are satisfied at the same time. 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 considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0029] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] Embodiment 1

[0031] Please refer to Figure 1and Figure 2 , Embodiment 1 of the present utility model is: a backlight module applied to a liquid crystal display device.

[0032] The backlight module includes a bottom frame, a light source assembly arranged on the bottom frame, a diffusion plate arranged above the light source assembly and a plurality of supporting structures arranged on the bottom frame, wherein the supporting structure includes a base 1 connected to the bottom frame, a deformation portion 2 is provided on the base 1, and the deformation portion 2 includes an upper protrusion 21 and a lower recess 22, wherein the middle area of ​​the upper protrusion 21 is recessed to form the lower recess 22, the upper protrusion 21 is connected to the base 1, and a column 3 is provided at the lower recess 22, wherein the top end of the column 3 protrudes relative to the top end of the upper protrusion 21, and specifically, the top end of the column 3 abuts against the diffusion plate.

[0033] In order to reduce the influence of the supporting structure on the luminescence of the backlight module and further reduce the risk of the supporting structure damaging the diffuser, in this embodiment, the column 3 is trapezoidal as a whole, the short bottom side of the column 3 contacts the diffuser, and the long bottom side of the column 3 is connected to the recess 22.

[0034] In some embodiments, an avoidance groove may be provided on the bottom frame, and the avoidance groove is provided corresponding to the deformation portion 2 , thereby leaving sufficient retreat space for the lower recessed portion 22 .

[0035] However, in order to achieve a thinner backlight module, in this embodiment, the bottom end of the lower recess 22 is higher than the bottom surface of the base 1, that is, the bottom end of the lower recess 22 is higher than the mounting surface of the base 1 and the bottom frame. In this way, the bottom frame does not need to be provided with an escape groove for evading the deformable portion 2, and the deformable portion 2 itself leaves enough space for the retreat of the lower recess 22. Preferably, the bottom end of the lower recess 22 is at least 1 mm higher than the bottom surface of the base 1. Optionally, the bottom end of the lower recess 22 is 1.5 mm-3 mm higher than the bottom surface of the base 1. In actual products, it is more common for the bottom end of the lower recess 22 to be 1.5-2 mm higher than the bottom surface of the base 1.

[0036] In order to allow the deformation part 2 to be evenly stressed, the deformation part 2 is preferably located in the middle area of ​​the base 1. In a specific product, in order to facilitate the positioning and assembly of the backlight module, the base 1 is optionally connected with a positioning column 4, and the bottom frame is provided with a positioning hole for cooperating with the positioning column 4. In this embodiment, the positioning columns 4 are respectively provided on opposite sides of the deformation part 2.

[0037] The support structure is an integral structure formed by integral injection molding, which can facilitate the processing and manufacturing of the support structure and reduce the manufacturing cost of the support structure. Optionally, the thickness of the base 1 is equal to or approximately equal to the wall thickness of the deformation portion 2.

[0038] In this embodiment, the material of the supporting structure is PC. In other embodiments, the supporting structure can also be made of other materials.

[0039] This embodiment further provides a liquid crystal display device, which includes the above-mentioned backlight module. The liquid crystal display device can be a television, a monitor, etc.

[0040] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A supporting structure, characterized in that: It includes a base, the base is provided with a deformation part, the deformation part includes an upper convex part and a lower concave part, the middle area of ​​the upper convex part is concave to form the lower concave part, the upper convex part is connected to the base, the lower concave part is provided with a column, and the top end of the column protrudes relative to the top end of the upper convex part.

2. The supporting structure according to claim 1, characterized in that: The bottom end of the concave portion is arranged higher than the bottom surface of the base.

3. The supporting structure according to claim 2, characterized in that: The bottom end of the recessed portion is at least 1 mm higher than the bottom surface of the base.

4. The supporting structure according to claim 3, characterized in that: The bottom end of the concave portion is 1.5 mm to 3 mm higher than the bottom surface of the base.

5. The supporting structure according to claim 1, characterized in that: The deformation portion is located in the middle area of ​​the base.

6. The supporting structure according to claim 1, characterized in that: The base is connected with a positioning column.

7. The supporting structure according to claim 1, characterized in that: The supporting structure is an integral structure formed by integral injection molding.

8. The supporting structure according to claim 1, characterized in that: The material of the supporting structure is PC.

9. A backlight module, characterized in that: The supporting structure comprises the supporting structure described in any one of claims 1 to 8.

10. A liquid crystal display device, characterized in that: Including the backlight module described in claim 9.

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