Backlight plate capable of achieving efficient heat dissipation and liquid crystal display module

Abstract

The invention relates to the technical field of liquid crystal modules, in particular to a backlight plate capable of achieving efficient heat dissipation and a liquid crystal display module. A plurality of flange structures are additionally arranged on the back face of the backlight plate, so that the strength of the backlight plate is improved, the heat dissipation area is increased, heat is rapidly dissipated to the outer side, and the product reliability is improved. Correspondingly, a cavity is formed in the outer machine shell of the display module and used for containing the flange part, and therefore smooth assembly of the display module is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid crystal modules, and in particular to a backlight panel and a liquid crystal display module capable of achieving efficient heat dissipation. Background Art

[0002] Liquid crystal display modules are generally composed of backlight panels, light guide panels, LED light strips, optical films, middle frames, liquid crystal display screens, etc. The photoelectric conversion rate of LED is low, with about 60-70% of the energy converted into heat energy. Part of the generated heat energy is transferred to the panel surface, and part is transferred to the backlight panel. The surface temperature rise of the liquid crystal display module is an important manifestation of the module's heat dissipation capacity. If the temperature rise of the LCD screen is too high, it will affect the optical properties of the liquid crystal in the box and affect the optical indicators. Under harsh trust conditions, the heat generated cannot be reasonably discharged, and the LED temperature will continue to rise, affecting the product's performance and life cycle. Therefore, controlling the surface temperature rise of the module as much as possible is the focus of research.

[0003] It should be noted that the information disclosed in the background technology section of the present invention is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes prior art already known to those skilled in the art. Summary of the invention

[0004] The purpose of the present invention is to provide a backlight panel and a liquid crystal display module that can achieve efficient heat dissipation, control the temperature rise of the module surface, reduce the surface temperature of the liquid crystal screen, and improve product stability.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows.

[0006] The present application first provides a backlight panel for achieving efficient heat dissipation, which is used in a liquid crystal display module. The backlight panel has a plurality of flange portions, and the surfaces of the plurality of flange portions are flat and coplanar. In order to accelerate heat dissipation, a plurality of flange structures are added to the back of the backlight panel, thereby increasing the heat dissipation area, allowing the heat to be quickly dissipated to the outside, and improving product reliability. In order to ensure that the contact surface between the backlight panel and the reflective film is flat, and at the same time facilitate the matching of other components inside the backlight module, the flange design of the heat dissipation accelerating strip of the backlight panel is a preferred solution.

[0007] As a further technical solution, the plurality of flanges are long strip structures arranged in parallel along the length direction or width direction of the backlight plate, and the length of the flange is less than the length or width of the backlight plate. The regular long strip flange structure can form a large space between the flanges, so that the heat dissipated by each flange can be dissipated along the space between the flanges, which can dissipate heat faster and with higher heat dissipation efficiency.

[0008] As a further technical solution, the flange is integrally formed by stamping the backlight panel, and the back of the flange is a matching recessed portion. The backlight panel is integrally formed by stamping, which only changes the shape of the backlight panel, without adding extra materials and processes, nor increasing the weight of the product, nor increasing the material cost. Moreover, the recessed portion on the back can also achieve heat dissipation at the same time, further increasing the heat dissipation area and improving the heat dissipation efficiency. The flange structure that accelerates heat dissipation can be directly molded, and the flatness is ensured by shaping like an ordinary backlight panel, which does not affect the cost. This structure simultaneously improves the strength of the heat dissipation backlight panel and is conducive to heat dissipation.

[0009] As a technical solution parallel to the above solution, the flange is a protruding structure added on the plane of the backlight plate. This solution does not need to change the original structure of the backlight plate, and is suitable for the modification of old products. A protruding structure is directly added on the backlight plate as the flange, and the heat dissipation efficiency is greatly increased through the three sides of the flange.

[0010] As a further technical solution, the edge of the flange portion is rounded to prevent sharp edges from scratching other accessories when other parts are assembled, or from affecting the firmness and shape of the flange portion.

[0011] As a further technical solution, the flatness tolerance of the backlight plate is 0.5mm. The flatness tolerance of the backlight module of the present application is 0.5mm, which is about 0.5mm thicker than the ordinary backlight module. It is necessary to design a space in the outer casing corresponding to the backlight module to ensure assembly compatibility.

[0012] As a further technical solution, the backlight panel is made of metal material, which has excellent thermal conductivity and can quickly dissipate heat.

[0013] The present application also provides a liquid crystal display module, comprising the above-mentioned backlight panel, wherein the outer housing of the display module is provided with a cavity for accommodating the flange portion. In order to adapt to the improved backlight panel, the outer housing of the liquid crystal display module is designed with a corresponding cavity as an escape space for accommodating the flange portion to ensure smooth assembly and compatibility.

[0014] As a further technical solution, the shape of the cavity matches the shape of the flange. The cavity that matches the shape of the flange can further increase the heat dissipation area through the concave-convex design of the cavity, quickly conduct the heat dissipated by the flange, and avoid excessive accumulation of heat in the cavity, which affects product performance.

[0015] As a further technical solution, the cavity is in an integral shape, and the cavity height is not less than the height of the flange. The overall cavity structure is simple, the manufacturing process is simple, and the space between the flanges can be retained to a greater extent, which is conducive to heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 is a schematic diagram of the structure of the backlight panel in the liquid crystal display module of Example 1;

[0018] Figure 2 is a schematic diagram of the side structure of the liquid crystal display module of Example 1;

[0019] Figure 3 is a detailed diagram of the liquid crystal display module of Example 1;

[0020] Figure markings: 1-flange, 2-backlight panel, 3-screw, 4-cavity, 5-outer casing. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is described below in conjunction with the accompanying drawings and embodiments.

[0022] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0023] Example 1

[0024] This embodiment provides a backlight plate 2 for achieving efficient heat dissipation, which is used in a liquid crystal display module. The backlight plate is fixed to other components by screws 3 to form a liquid crystal display module. Figure 1As shown, the backlight panel 2 has a plurality of flange portions 1, and the surfaces of the plurality of flange portions 1 are plane and coplanar. In order to accelerate heat dissipation, a plurality of flange structures are added to the back of the original backlight panel 2, thereby increasing the heat dissipation area, allowing the heat to be quickly dissipated to the outside, and improving product reliability. The backlight panel 2 is made of metal material, and the metal material has excellent thermal conductivity and can quickly dissipate heat. This embodiment adopts an aluminum backlight panel 2, that is, an aluminum part. In order to ensure that the contact surface between the backlight panel 2 and the reflective film is a plane, and at the same time, it is conducive to the matching of other components inside the backlight module, therefore, the surface of the flange portion 1 of the backlight panel 2 should be coplanar, so that the backlight panel 2 as a whole is still a plane, and does not affect the subsequent installation and matching of other components. The flange portion 1 can be of any shape, such as dots, triangles, squares, rhombuses or other regular or irregular shapes. The flange design of the heat dissipation accelerating strip of the backlight panel 2 is a preferred solution. Specifically, the plurality of flanges 1 are long strip structures arranged in parallel along the length direction or width direction of the backlight panel 2, and the length of the flanges 1 is less than the length or width of the backlight panel 2. With the regular long strip flange structure, a large space can be formed between the flanges 1, so that the heat dissipated by each flange 1 can be dissipated along the space between the flanges 1, resulting in faster heat dissipation and higher heat dissipation efficiency.

[0025] The flange part 1 structure that accelerates heat dissipation can be directly molded, and the flatness is ensured by shaping in the same way as ordinary aluminum parts, which does not affect the cost. This structure also improves the strength of the heat dissipation aluminum parts and is conducive to heat dissipation. Specifically, the flange part 1 is integrally formed by stamping the backlight panel 2, and the back of the flange part 1 is a recessed part that matches it. The backlight panel 2 is integrally formed by stamping, which only changes the shape of the backlight panel 2. There is no need to add extra materials and processes, nor does it increase the weight of the product, nor does it increase the material cost. In addition, the recessed part on the back side can also achieve heat dissipation at the same time, further increasing the heat dissipation area and improving the heat dissipation efficiency. The flange structure that accelerates heat dissipation can be directly molded, and the flatness is ensured by shaping in the same way as ordinary backlight panels 2, which does not affect the cost. This structure also improves the strength of the heat dissipation backlight panel 2 and is conducive to heat dissipation. The flatness tolerance of the backlight panel 2 is 0.5mm. The flatness tolerance of the backlight module of this embodiment is 0.5 mm, which is about 0.5 mm thicker than a common backlight module. It is necessary to design a space in the outer casing 5 corresponding to the backlight module to ensure assembly compatibility.

[0026] As a technical solution parallel to the above solution, the flange 1 is a raised structure added on the plane of the backlight panel 2. This solution does not need to change the original structure of the backlight panel 2, and is suitable for the modification of old products. A raised structure is directly added on the backlight panel 2 as the flange 1, and the heat dissipation efficiency is greatly increased through the three sides of the flange 1. The flatness tolerance of the backlight module of this solution can also be controlled to 0.5mm.

[0027] Accordingly, this embodiment also provides a liquid crystal display module, such as Figure 2 As shown, including the above-mentioned backlight panel 2, the outer casing 5 of the display module is provided with a cavity 4 for accommodating the flange portion 1. As mentioned above, the backlight module of this embodiment is about 0.5mm thicker than the ordinary backlight module, and it is necessary to design an avoidance space in the outer casing 5 corresponding to the backlight module to ensure assembly compatibility. In order to adapt to the improved backlight panel 2, the outer casing 5 of the liquid crystal display module is designed with a corresponding cavity 4 as an avoidance space for accommodating the flange portion 1 to ensure smooth assembly and compatibility. Optionally, the shape of the cavity 4 can match the shape of the flange portion 1, such as Figure 3 As shown, the cavity 4 matching the shape of the flange portion 1 can further increase the heat dissipation area through the concave-convex design of the cavity 4, quickly conduct the heat dissipated by the flange portion 1, and avoid excessive accumulation of heat in the cavity 4 to affect product performance.

[0028] Optionally, the shape of the cavity 4 can also be integral, and the height of the cavity 4 is not less than the height of the flange 1. The integral cavity 4 has a simple structure and a simple manufacturing process, and can retain the space between the flanges 1 to a greater extent, which is conducive to heat dissipation.

[0029] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0030] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A backlight plate for achieving efficient heat dissipation, used in a liquid crystal display module, characterized in that: The backlight plate has a plurality of flange portions, and surfaces of the flange portions are plane and coplanar.

2. The backlight panel according to claim 1, characterized in that: The flange portion is a long strip structure arranged in parallel along the length direction or the width direction of the backlight plate, and the length of the flange portion is smaller than the length or the width of the backlight plate.

3. The backlight panel according to claim 2, characterized in that: The flange portion is formed by stamping the backlight plate as an integral unit, and the back side of the flange portion is a recessed portion matching the flange portion.

4. The backlight panel according to claim 2, characterized in that: The flange portion is a protruding structure added on the plane of the backlight plate.

5. The backlight panel according to claim 3 or 4, characterized in that: The edge of the flange portion is rounded.

6. The backlight panel according to claim 5, characterized in that: The flatness tolerance of the backlight plate is 0.5 mm.

7. The backlight panel according to claim 6, characterized in that: The backlight plate is made of metal.

8. A liquid crystal display module, characterized in that: Comprising the backlight plate according to any one of claims 1 to 7, the outer casing of the liquid crystal display module is provided with a cavity for accommodating the flange portion.

9. The liquid crystal display module according to claim 8, characterized in that: The shape of the cavity matches the shape of the flange portion.

10. The liquid crystal display module according to claim 8, characterized in that: The shape of the cavity is integral, and the height of the cavity is not less than the height of the flange portion.

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