Backlight module and liquid crystal display module

Abstract

The utility model discloses a backlight module and a liquid crystal display module, and relates to the technical field of liquid crystal display modules.The backlight module comprises a rubber frame, a backlight lamp and a heat conduction frame, the rubber frame is provided with a heat dissipation area, and heat dissipation holes are formed in the heat dissipation area; the backlight lamp is arranged on the rubber frame and corresponds to the heat dissipation holes. The heat conduction frame is arranged on the side, opposite to the backlight lamp, of the rubber frame and covers the heat dissipation holes corresponding to the heat dissipation area.

Description

Technical Field

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

[0002] With the advancement of mobile communication technology, an increasing number of portable electronic devices are integrating near-field communication (NFC) and electromagnetic radiation (EMR) capabilities to enable wireless payment, data transmission, and inter-device interaction. These features typically require the corresponding electronic components to be mounted on the back of the device's display. However, in traditional liquid crystal module (LCM) designs, a thermally conductive frame is standard, providing both structural support and heat dissipation. When NFC or EMR components are placed on the back of the display, the thermally conductive frame can shield the signals of these functional components, impacting their performance.

[0003] To address signal shielding issues, it may be necessary to eliminate or redesign the thermal border. However, this approach introduces a host of new challenges, particularly regarding heat dissipation. High-brightness display modules generate significant heat during operation due to the LEDs. Without effective heat dissipation measures, this heat can accumulate inside the display, causing a perceived increase in temperature, impacting user comfort, and potentially shortening the module's lifespan. Utility Model Content

[0004] The main purpose of the utility model is to provide a backlight module, aiming to improve the heat dissipation effect of the backlight module and extend the service life of the backlight module.

[0005] To achieve the above-mentioned purpose, the backlight module proposed in the present invention includes:

[0006] A plastic frame, wherein the plastic frame has a heat dissipation area, and the heat dissipation area is provided with heat dissipation holes;

[0007] A backlight, the backlight being disposed on the plastic frame and corresponding to the heat dissipation holes; and

[0008] The heat-conducting frame is arranged on a side of the plastic frame facing away from the backlight and is arranged corresponding to the heat dissipation area to cover the heat dissipation holes.

[0009] The present invention further provides a liquid crystal display module, comprising a display panel and the backlight module described in any one of the above embodiments, wherein the backlight module is electrically connected to the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0011] Figure 1 The utility model provides a schematic diagram of the exploded structure of a backlight module according to a first perspective;

[0012] Figure 2 A schematic diagram of the exploded structure of a backlight module according to a second viewing angle is provided for the present invention;

[0013] Figure 3 A schematic diagram of the exploded structure of an embodiment of a backlight module of the present invention from a third viewing angle is provided;

[0014] Figure 4 A partial cross-sectional view of an embodiment of a backlight module is provided for the present utility model;

[0015] Figure 5 for Figure 4 Enlarged view of part A in the middle.

[0016] Description of Figure Numbers:

[0017] 100. Backlight module; 1. Rubber frame; 11. Heat dissipation area; 111. Heat dissipation hole; 12. Mounting slot; 121. Limiting step; 13. Limiting slot; 14. Avoidance area; 2. Backlight; 3. Thermal conductive frame; 31. First thermal conductive edge; 32. Second thermal conductive edge; 33. Third thermal conductive edge; 34. Wire outlet hole; 4. Adhesive; 41. Through hole; 5. Optical component; 51. Light guide plate; 52. Lower diffuser; 53. Lower light-enhancing element; 54. Upper light-enhancing element; 55. Light-shielding layer; 56. Diffusion strip; 6. Flexible circuit board.

[0018] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0020] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0021] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only 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 limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B 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 mutually 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 present invention.

[0022] The present invention provides a backlight module 100 .

[0023] See also Figures 1 to 5 In one embodiment of the present invention, the backlight module 100 includes a plastic frame 1, a backlight lamp 2 and a thermal conductive frame 3. The plastic frame 1 has a heat dissipation area 11, and the heat dissipation area 11 is provided with heat dissipation holes 111; the backlight lamp 2 is arranged on the plastic frame 1 and is arranged corresponding to the heat dissipation holes 111; the thermal conductive frame 3 is arranged on the side of the plastic frame 1 facing away from the backlight lamp 2, and is arranged corresponding to the heat dissipation area 11 to cover the heat dissipation holes 111.

[0024] In the technical solution of the present utility model, the heat emitted by the backlight 2 is transferred to the heat-conducting frame 3 through the heat dissipation holes 111 of the heat dissipation area 11 to achieve heat dissipation. The heat-conducting frame 3 covers the heat dissipation area 11 and corresponds to the heat dissipation holes 111. The heat-conducting frame 3 is effectively used as a heat dissipation medium to dissipate the heat generated by the backlight 2, which helps to maintain the normal operating temperature of the backlight module 100, extend its service life and improve stability.

[0025] To further improve heat dissipation efficiency, see Figure 4 and Figure 5In one embodiment of the present invention, the heat-conducting frame 3 includes a first heat-conducting edge 31, a second heat-conducting edge 32, and a third heat-conducting edge 33 disposed opposite the first heat-conducting edge 31. The second heat-conducting edge 32 connects the first and third heat-conducting edges 31 and 33. The end of the plastic frame 1 on which the backlight 2 is mounted is located between the first and third heat-conducting edges 31 and 33. The first heat-conducting edge 31 corresponds to the heat dissipation area 11, the second heat-conducting edge 32 covers the notch of the mounting slot 12, and the third heat-conducting edge 33 is located above the backlight 2. The arrangement of the first, second, and third heat-conducting edges 31, 32, and 33 allows heat dissipated by the backlight 2 to be transferred to the first heat-conducting edge 31 through the heat dissipation holes 111, to the second heat-conducting edge 32 through the notch of the mounting slot 12, and to the third heat-conducting edge 33 above the backlight 2. This further increases the heat dissipation pathways of the backlight 2 and improves both heat dissipation efficiency and heat dissipation effectiveness.

[0026] Further, see Figure 1 、 Figure 4 as well as Figure 5 In one embodiment of the present invention, a mounting groove 12 with a notch is provided on the side of the plastic frame 1 facing the backlight 2. A heat dissipation hole 111 is provided on the bottom wall of the mounting groove 12. The backlight 2 is arranged on the bottom wall of the mounting groove 12 and is arranged close to the notch of the mounting groove 12. The second heat-conducting edge 32 covers the notch of the mounting groove 12. By providing the mounting groove 12 with a notch, the heat emitted by the backlight 2 can be transferred to the first heat-conducting edge 31 through the heat dissipation hole 111 and to the second heat-conducting edge 32 through the notch of the mounting groove 12. This allows the heat generated by the backlight 2 to be transferred to the heat-conducting frame 3 through multiple paths, thereby increasing the heat dissipation path, thereby achieving effective heat dissipation, improving heat dissipation efficiency, and further enhancing the reliability and performance of the backlight module 100. In particular, under high brightness or long-term operation conditions, by optimizing the heat dissipation path, the negative impact of heat on the performance of the backlight module 100 can be reduced, thereby extending the service life of the product.

[0027] See also Figure 2 and Figure 4 In one embodiment of the present invention, a limiting groove 13 is defined on the side of the plastic frame 1 facing away from the backlight 2. The limiting groove 13 corresponds to the heat dissipation region 11, and the first heat-conducting edge 31 is accommodated within the limiting groove 13. The provision of the limiting groove 13 not only maintains the heat-conducting edge 3 and the plastic frame 1 on the same horizontal plane, ensuring good thermal contact between the plastic frame 1 and the heat-conducting edge 3, but also reduces the thickness of the heat dissipation region 11 of the plastic frame 1, thereby shortening the distance between the heat dissipation holes 111 and the heat-conducting edge 3, thereby accelerating heat conduction and dissipation. This structural optimization can improve the heat dissipation efficiency of the entire backlight module 100, enhancing its reliability and performance.

[0028] See also Figure 1In one embodiment of the present invention, the backlight module 100 includes a plurality of backlight lamps 2, and a plurality of heat dissipation holes 111 are provided in the heat dissipation area 11. Each backlight lamp 2 corresponds to a heat dissipation hole 111, and the thermal conductive frame 3 covers the plurality of heat dissipation holes 111; the plastic frame 1 has an avoidance area 14 for installing electronic components, and the avoidance area 14 is independent of the heat dissipation area 11. Each backlight 2 is provided with a corresponding heat dissipation hole 111 to ensure that the heat of each backlight 2 can be effectively dissipated. The thermal conductive frame 3 covers the heat dissipation hole 111, which helps protect the components and provides an additional heat dissipation path. In another embodiment, the heat of multiple backlights 2 can also be transferred to the second heat conductive edge 32 through the notch of the mounting slot 12, and can also be transferred to the third heat conductive edge 33 above the backlight 2 to achieve heat dissipation. The avoidance area 14 in the plastic frame 1 is independent of the heat dissipation area 11. The avoidance area 14 is used to install NFC or EMR components. This design ensures that the thermal conductive frame 3 will not have a shielding effect on the signals of the NFC or EMR components, and can also achieve heat dissipation of the backlight module 100, which can effectively manage heat, prevent components from overheating, extend the service life of the product, and ensure the stability of the performance of the backlight module 100.

[0029] See also Figure 1 、 Figure 2 as well as Figure 5 In one embodiment of the present invention, the backlight module 100 includes an adhesive member 4, the two sides of which are connected to the heat dissipation area 11 of the plastic frame 1 and the thermally conductive frame 3, respectively. The adhesive member 4 is provided with through holes 41 corresponding to the heat dissipation holes 111. The cooperation between the through holes 41 of the adhesive member 4 and the thermally conductive frame 3 not only connects the thermally conductive frame 3 to the plastic frame 1, but also more effectively conducts heat from the heat source to the outside, thereby reducing the temperature of the backlight module 100. The adhesive member 4 can be designed into different shapes and sizes as needed to accommodate different heat dissipation requirements and space constraints.

[0030] See also Figure 1 and Figure 3 In one embodiment of the present invention, the backlight module 100 includes an optical assembly 5, which is disposed on the side of the plastic frame 1 facing the backlight 2. The optical assembly 5 includes a light guide plate 51, a lower diffuser 52, a lower light-enhancing member 53, an upper light-enhancing member 54, and a light-shielding layer 55, which are stacked in sequence from the end closest to the plastic frame 1 to the end farther away from the plastic frame 1. The light guide plate 51, the lower diffuser 52, the lower light-enhancing member 53, the upper light-enhancing member 54, and the light-shielding layer 55 work together to provide a uniform light source and improve display quality. The light guide plate 51 is responsible for converting the point light source of the backlight 2 into a surface light source. The lower diffuser 52 is used to uniformize the light. The lower light-enhancing member 53 and the upper light-enhancing member 54 enhance the brightness of the light. The light-shielding layer 55 is used to prevent unnecessary scattering of light, thereby improving the contrast and clarity of the display.

[0031] See also Figure 1 and Figure 3 In one embodiment of the present invention, a mounting groove 12 with a notch is provided on the side of the plastic frame 1 facing the backlight 2. The light guide plate 51, the lower diffuser 52, the lower light-enhancing member 53 and the upper light-enhancing member 54 are stacked in sequence in the mounting groove 12. The inner peripheral wall of the mounting groove 12 is provided with a limiting step 121, and the light-shielding layer 55 is provided on the limiting step 121; the optical component 5 also includes a diffusion strip 56, which is connected to the heat-conducting frame 3 and is located above the backlight 2. The limiting step 121 provides a stable installation position for the shading layer 55, ensuring that it will not move in the plastic frame 1, thereby effectively preventing light leakage; the diffusion strip 56 is connected to the thermal conductive frame 3 and is located above the backlight 2. The diffusion strip 56 can effectively diffuse the point light source emitted by the backlight 2 evenly, reduce the bright spot phenomenon, and improve the overall light uniformity. By optimizing the distribution of light, the diffusion strip 56 can enhance the contrast of the display screen, making the image clearer and more vivid. The diffusion strip 56 can also expand the viewing angle range, so that the picture maintains consistent brightness and color when observed from different angles. When the diffusion strip 56 is connected to the thermal conductive frame 3, the heat generated by the backlight 2 is conducted to the diffusion strip 56, and then transferred to the thermal conductive frame 3 through the diffusion strip 56, thereby avoiding heat concentration and reducing the risk of local overheating.

[0032] See also Figure 1 In one embodiment of the present invention, the backlight module 100 includes a flexible circuit board 6, which is disposed in the heat dissipation area 11 of the plastic frame 1. The backlight 2 is electrically connected to the flexible circuit board 6. The thermally conductive frame 3 defines a wire outlet 34, through which a portion of the flexible circuit board 6 extends. The backlight 2 is electrically connected to the flexible circuit board 6, and the flexible circuit board 6 can transmit control signals, allowing the backlight 2 to achieve functions such as dimming and color change, thereby improving its usability. The flexible circuit board 6 contacts the thermally conductive frame 3 through the inner peripheral wall of the wire outlet 34, thereby dissipating heat from the flexible circuit board 6. The thermally conductive frame 3 generally has good electrical conductivity and can effectively conduct static electricity. The contact portion between the flexible circuit board 6 and the inner peripheral wall of the wire outlet 34 can conduct accumulated static electricity through the thermally conductive frame 3, reducing potential damage to electronic components caused by static electricity. When the thermally conductive frame 3 is grounded, the static electricity is safely discharged to the ground through the frame, preventing static electricity accumulation from interfering with and damaging the flexible circuit board 6.

[0033] The present invention also proposes a liquid crystal display module, which includes a display panel and a backlight module 100. The specific structure of the backlight module 100 refers to the above embodiment. Since the present liquid crystal display module adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the backlight module 100 is electrically connected to the display panel; the display panel is the front component of the liquid crystal display module, responsible for controlling the transmission and blocking of light, as well as displaying images and text; the backlight module 100 is a key component of the liquid crystal display module, responsible for providing a uniform light source so that the display panel can clearly display images; the electrical connection between the backlight module 100 and the display panel means that there is an electrical circuit between the two for transmitting control signals and power to ensure that the backlight module 100 can provide appropriate brightness according to the needs of the display panel.

[0034] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A backlight module, characterized in that: include: A plastic frame, wherein the plastic frame has a heat dissipation area, and the heat dissipation area is provided with heat dissipation holes; A backlight, the backlight being arranged on the plastic frame and corresponding to the heat dissipation holes; as well as The heat-conducting frame is arranged on a side of the plastic frame facing away from the backlight and is arranged corresponding to the heat dissipation area to cover the heat dissipation holes.

2. The backlight module according to claim 1, wherein: The heat-conducting frame includes a first heat-conducting edge, a second heat-conducting edge, and a third heat-conducting edge arranged opposite to the first heat-conducting edge. The second heat-conducting edge connects the first heat-conducting edge and the third heat-conducting edge. The end of the plastic frame equipped with the backlight is located between the first heat-conducting edge and the third heat-conducting edge.

3. The backlight module according to claim 2, wherein: A mounting groove with a notch is provided on the side of the rubber frame facing the backlight, the bottom wall of the mounting groove is provided with the heat dissipation hole, the backlight is arranged on the bottom wall of the mounting groove and close to the notch of the mounting groove, and the second heat-conducting edge covers the notch of the mounting groove.

4. The backlight module according to claim 2, wherein: A limiting groove is provided on a side of the plastic frame facing away from the backlight, the limiting groove is arranged corresponding to the heat dissipation area, and the first heat-conducting edge is accommodated in the limiting groove.

5. The backlight module according to any one of claims 1 to 4, wherein: The backlight module includes a plurality of backlight lamps, the heat dissipation area is provided with a plurality of heat dissipation holes, each backlight lamp corresponds to a heat dissipation hole, and the heat conductive frame covers the plurality of heat dissipation holes; and / or The plastic frame has an avoidance area for installing electronic components, and the avoidance area is independent of the heat dissipation area.

6. The backlight module according to any one of claims 1 to 4, wherein: The backlight module includes an adhesive member, two sides of which are respectively connected to the heat dissipation area of ​​the plastic frame and the heat-conducting frame, and the adhesive member is provided with through holes corresponding to the heat dissipation holes.

7. The backlight module according to any one of claims 1 to 4, wherein: The backlight module includes an optical component, which is arranged on the side of the plastic frame facing the backlight. The optical component includes a light guide plate, a lower diffuser, a lower light-enhancing component, an upper light-enhancing component and a light-shielding layer stacked in sequence from one end close to the plastic frame to the end away from the plastic frame.

8. The backlight module according to claim 7, wherein: A mounting groove with a notch is provided on a side of the plastic frame facing the backlight, the light guide plate, the lower diffuser, the lower light-enhancing member and the upper light-enhancing member are stacked in sequence in the mounting groove, a limiting step is provided on the inner peripheral wall of the mounting groove, and the light-shielding layer is provided on the limiting step; and / or The optical assembly further includes a diffusion strip, which is connected to the heat-conducting frame and is located above the backlight.

9. The backlight module according to any one of claims 1 to 4, wherein: The backlight module includes a flexible circuit board, which is arranged in the heat dissipation area of ​​the plastic frame, and the backlight is electrically connected to the flexible circuit board; The heat-conducting frame is provided with a wire outlet hole, and a part of the structure of the flexible circuit board passes through the wire outlet hole.

10. A liquid crystal display module, characterized in that: include: Display panel; and The backlight module according to any one of claims 1 to 9, wherein the backlight module is electrically connected to the display panel.

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