Backlight module and display device

Abstract

The application provides a backlight module and a display device. The backlight module comprises a back plate, a lamp plate and a light guide plate. The lamp plate is arranged on one side of the back plate. The lamp plate comprises a lamp strip. The lamp strip comprises a substrate and a light emitting element. The light emitting element is packaged on the substrate. The light guide plate is arranged on the side of the light emitting element away from the substrate. The substrate is a glass substrate. The backlight module further comprises a support assembly for supporting the lamp strip. The support assembly comprises a support part. The support part is arranged between the back plate and the lamp strip. The support part is fixedly connected with the lamp strip and is in close contact with each other. The length and width of the support part are matched with the length and width of the lamp strip respectively. The support assembly comprises a metal material. The backlight module is not easy to be broken or damaged by arranging the support assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a backlight module and a display device. BACKGROUND

[0002] In recent years, liquid crystal display panels (LCD) have become mainstream display products due to their low radiation, low power consumption, low space occupancy, and lightness and beauty, and the industry has been expanding, and the competition in the industry has become increasingly fierce.

[0003] At present, in order to save production costs and enhance the competitive advantage of enterprises, how to improve the utilization rate of the glass large plate used to make the panel has become the key to reducing costs. By using the residual material of the glass large plate to make the light bar, the utilization rate of the glass large plate can be effectively improved, and the cost can be reduced.

[0004] However, using a glass substrate as a substrate of a light bar, due to the brittleness of the glass substrate, the light bar is easily broken by external force. SUMMARY

[0005] The present application provides a backlight module, which aims to solve the problem that the light bar of the backlight module in the prior art is easily broken.

[0006] To solve the above technical problems, the first technical solution provided by the present application is to provide a backlight module. The backlight module comprises:

[0007] a back plate;

[0008] a light plate arranged on one side of the back plate, the light plate comprising a light bar, the light bar comprising a substrate and a light emitting element, the light emitting element being packaged on the substrate;

[0009] a light guide plate arranged on a side of the light emitting element away from the substrate;

[0010] The substrate is a glass substrate; the backlight module further comprises a support assembly for supporting the light bar; the support assembly comprises a support portion arranged between the back plate and the light bar, the support portion is fixedly connected with the light bar and mutually adheres, the length and width of the support portion are matched with the length and width of the light bar respectively, and the support assembly comprises a metal material.

[0011] The portion of the support portion corresponding to the light plate is recessed in a direction away from the light bar to form a first limiting groove; the light bar is embedded in the first limiting groove, the width of the first limiting groove is matched with the width of the light plate, and the depth of the first limiting groove is matched with the thickness of the substrate.

[0012] The support assembly further comprises a plurality of first limiting portions, the plurality of first limiting portions are arranged on opposite sides of the first limiting groove along the width direction and connected to the support portion; one end of the first limiting portion away from the support portion abuts against the light guide plate, so that the distance between the light emitting element and the light guide plate is kept as a preset distance.

[0013] The support assembly further comprises a plurality of second limiting portions; the plurality of second limiting portions are arranged on both sides of the light bar along the width direction and connected to the support portion; one end of the second limiting portion away from the support portion abuts against the light guide plate, so that the distance between the light emitting element and the light guide plate is kept as a preset distance.

[0014] The substrate substrate has a second limiting groove on one side close to the support portion, the depth of the second limiting groove is 0.1-0.3mm, and the support portion is embedded in the second limiting groove.

[0015] The support portion comprises a main body portion and a plurality of branch portions, the main body portion extends along the length direction of the light bar, and the plurality of branch portions are arranged on opposite sides of the main body portion and connected to the main body portion.

[0016] The support assembly further comprises a plurality of third limiting portions, the plurality of third limiting portions are arranged along the length direction of the main body portion and connected to the main body portion; the substrate substrate is provided with a through hole at a position corresponding to the third limiting portion, the third limiting portion passes through the through hole and abuts against the light guide plate, so that the distance between the light emitting element and the light guide plate is kept as a preset distance.

[0017] The thickness of the support portion along the direction perpendicular to the light bar is 0.2-0.5mm; the backlight module further comprises a heat-conducting adhesive layer, and the support portion and the light bar are attached through the heat-conducting adhesive layer.

[0018] The light guide plate is a curved plate, the light bar and the support portion are curved strips, and the curvature of the curved strips is the same as the curvature of the light guide plate.

[0019] To solve the above technical problems, the second technical solution provided by the present application is to provide a display device. The display device comprises:

[0020] A display panel for displaying an image;

[0021] A backlight module arranged opposite to the display panel, for providing a backlight source to the display panel, the backlight module is the backlight module as described in the above technical solution.

[0022] The beneficial effects of the present application: Different from the prior art, the present application provides a backlight module and a display device. The backlight module comprises a back plate, a lamp plate and a light guide plate carried on the back plate. The lamp plate comprises a lamp strip. The substrate of the lamp strip is a glass substrate. The glass residual material left after the manufacture of the display panel is used to manufacture the glass substrate of the lamp strip. The effective utilization rate of the glass large plate is improved, and the production cost of the backlight module can be effectively reduced. The backlight module comprises a support assembly for supporting the lamp strip and protecting the lamp strip. The risk of breakage or damage of the lamp strip due to external force is effectively reduced, and the occurrence of local shadow of the backlight module is avoided. Further, the support assembly comprises a support part, and the support part is fixedly connected with the lamp strip and is in close contact with the lamp strip. The support part is in close contact with the lamp strip. When subjected to external force, the support part can evenly distribute the external force on the lamp strip, avoiding the problem of breakage or damage of the lamp strip due to excessive local pressure. The protection effect of the lamp strip is further improved. The length and width of the support part are matched with the length and width of the lamp strip, respectively. The support part can protect the whole lamp strip, avoiding the problem of local damage of the lamp strip due to lack of protection. The support assembly comprises a metal material. The mechanical strength of the support part is high, further improving the protection effect of the support assembly on the lamp strip. In addition, the support assembly can also timely dissipate heat from the lamp strip due to the strong heat conduction ability of the metal material, effectively reducing the occurrence of problems such as reduction of service life of the lamp plate and damage of the circuit due to expansion deformation of the lamp plate caused by heat generated by the lamp plate. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative labor.

[0024] Figure 1 is a structural schematic diagram of the backlight module provided by the first embodiment of the present application;

[0025] Figure 2 is Figure 1 is a structural schematic diagram of the support assembly and the lamp strip provided by the first embodiment of the present application;

[0026] Figure 3 is Figure 2 is a sectional structural schematic diagram of the first embodiment of the present application in A-A direction;

[0027] Figure 4 is Figure 2 is a sectional structural schematic diagram of the first embodiment of the present application in B-B direction;

[0028] Figure 5 isFigure 1 Structure diagram of the support assembly and the light bar in the second embodiment of the present application;

[0029] Figure 6 Structure diagram of the support assembly and the light bar in the second embodiment of the present application; Figure 5 Structure diagram of the support assembly and the light bar in the second embodiment of the present application;

[0030] Figure 7 Structure diagram of the support assembly and the light bar in the second embodiment of the present application; Figure 5 Structure diagram of the support assembly and the light bar in the second embodiment of the present application;

[0031] Figure 8 Structure diagram of the support assembly and the light bar in the second embodiment of the present application;

[0032] Figure 9 Structure diagram of the support assembly and the light bar in the second embodiment of the present application; Figure 8 Structure diagram of the support assembly and the light bar in the second embodiment of the present application;

[0033] Figure 10 Structure diagram of the support assembly and the light bar in the second embodiment of the present application; Figure 9 Structure diagram of the support assembly and the light bar in the second embodiment of the present application;

[0034] Figure 11 Structure diagram of the support assembly and the light bar in the second embodiment of the present application; Figure 8 Structure diagram of the support assembly and the light bar in the second embodiment of the present application;

[0035] Figure 12 Structure diagram of the support assembly and the light bar in the second embodiment of the present application; Figure 8 Structure diagram of the support assembly and the light bar in the second embodiment of the present application;

[0036] Figure 13 Structure diagram of the support assembly and the light bar in the second embodiment of the present application; Figure 12 Structure diagram of the support assembly and the light bar in the second embodiment of the present application;

[0037] Figure 14 Structure diagram of the support assembly and the light bar in the second embodiment of the present application;

[0038] Figure 15 Structure diagram of the support assembly and the light bar in the second embodiment of the present application;

[0039] Figure 16 Structure diagram of the support assembly and the light bar in the second embodiment of the present application;

[0040] Figure 17 Structure diagram of the support assembly and the light bar in the second embodiment of the present application;

[0041] Reference signs:

[0042] 100 - back light module; 10 - back plate; 11 - bottom plate; 12 - side plate; 20 - light bar; 21 - substrate; 211 - through hole; 22 - light emitting element; 30 - light guide plate; 40 - support assembly; 41 - support part; 411 - first limiting groove; 412 - main body part; 413 - branch part; 414 - second limiting groove; 42 - first limiting part; 43 - second limiting part; 44 - third limiting part; 50 - heat conductive adhesive layer; 60 - optical film; 70 - reflective layer; 200 - display panel. DETAILED DESCRIPTION

[0043] The scheme of the embodiments of the present application will be described in detail below with reference to the accompanying drawings of the description.

[0044] In the following description, specific details are set forth in order to provide a thorough understanding of the present application. The present application may, however, be practiced without some or all of these details. In other instances, well known methods, procedures, components, and network architectures have not been described in detail so as not to unnecessarily obscure the present application.

[0045] The technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0046] The terms "first", "second", "third" in the present application are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components, if the specific posture (as shown in the drawings) changes, the directional indications also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0047] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in

[0048] The application will be described in detail below with reference to the attached drawings and embodiments.

[0049] Reference is made to Figure 1 and Figure 2 , Figure 1 is a structural schematic diagram of a backlight module provided by a first embodiment of the application, Figure 2 is a structural schematic diagram of a support assembly and a light bar provided by the first embodiment of the application. In the embodiment, a backlight module 100 is provided, which can be used in a display device (see Figure 15 ) to provide a backlight source for a display panel 200. Specifically, the display device can be a liquid crystal display device, an electrophoretic display device, or other types of display devices that need a backlight source.

[0050] In the embodiment, the backlight module 100 includes a back plate 10, a light plate, and a light guide plate 30. The back plate 10 is used to carry the light plate and the light guide plate 30. The back plate 10 includes a bottom plate 11 and a side plate 12 connected to the bottom plate 11. The bottom plate 11 and the side plate 12 form a receiving groove for carrying the light plate and the light guide plate 30. The material of the back plate 10 can be a metal material, such as aluminum, aluminum alloy, copper alloy, etc., to facilitate heat dissipation of the light plate, thereby reducing the risk of problems such as shortened service life of the light-emitting element 22 and circuit damage caused by expansion and deformation of the light plate due to excessively high temperature in the module.

[0051] The light plate is arranged on one side of the back plate 10 and located in the receiving groove formed by the bottom plate 11 and the side plate 12. The light plate includes a light bar 20. Specifically, the light plate can be assembled by the light bar 20. The number of the light bar 20 can be one or more, which can be set according to the type and size of the backlight module 100, without specific limitation. The light bar 20 includes a substrate 21 and a light-emitting element 22. The light-emitting element 22 is encapsulated on the substrate 21 and electrically connected to the circuit on the substrate 21.

[0052] The light guide plate 30 and the lamp plate are arranged on the same side of the bottom plate 11, and are arranged in the accommodating groove formed by the bottom plate 11 and the side plate 12. The light guide plate 30 is specifically arranged on the side of the light emitting element 22 away from the substrate 21, so as to receive the emitted light of the light emitting element 22 and convert the emitted light into a surface light source, so that the light field provided by the backlight module 100 is more balanced. The shape and size of the light blocking plate can be set according to actual needs, and no specific limitation is made. The light guide plate 30 has a light entrance surface and a light exit surface. The lamp plate is arranged on the light entrance surface side of the light guide plate 30, so that the emitted light of the lamp plate can be introduced into the light guide plate 30 through the light entrance surface. The light exit surface of the light guide plate 30 is parallel to and opposite to the bottom plate 11, so that the light exit direction of the backlight module 100 is the vertical direction from the bottom plate 11 to the light guide plate 30, so as to provide a backlight source for the display panel 200.

[0053] In the embodiment of the present application, the substrate 21 of the lamp strip 20 is a glass substrate, that is, the substrate 21 of the lamp strip 20 is made of glass residues. The part of the glass large plate left after the display panel 200 is made cannot be used to make the display panel 200 again due to its size and shape. This part of the glass residues can be used to make the substrate 21 of the lamp strip 20, thereby improving the effective utilization rate of the glass large plate and reducing the cost of the backlight module 100 and the display device.

[0054] In the embodiment, the backlight module 100 further comprises a supporting assembly 40 for supporting the light bar 20 to protect the light bar 20, effectively reduce the risk of breakage or damage of the light bar 20 caused by external force, and avoid the occurrence of local shadow of the backlight module 100. Specifically, the supporting assembly 40 comprises a supporting part 41 arranged between the back plate 10 and the light bar 20, and the supporting part 41 is fixedly connected with the light bar 20 and adheres to each other, so that the supporting part 41 adheres to the light bar 20. When an external force is applied, the supporting part 41 can evenly disperse the external force on the light bar 20, avoiding the problem of breakage or damage of the light bar 20 caused by excessive local pressure, so as to further improve the protection effect of the light bar 20. The length and width of the supporting part 41 are matched with the length and width of the light bar 20, specifically, the overall shape of the supporting part 41 is basically the same as that of the light bar 20, and the length and width of the supporting part 41 are basically the same as those of the light bar 20, so that the supporting part 41 can protect the whole light bar 20, avoiding the problem of local damage of the light bar 20 caused by the local protection. Further, the supporting assembly 40 comprises a metal material, such as aluminum, aluminum alloy, copper alloy and other materials with high mechanical strength and good heat conduction capacity, so that the supporting assembly 40 has high mechanical strength, further improving the protection effect of the supporting assembly 40 on the light bar 20. In addition, due to the strong heat conduction capacity of the metal material, the supporting assembly 40 can also conduct the heat generated by the light bar 20 in time, which is beneficial to the heat dissipation of the light bar, effectively reducing the problems of reduced service life of the light bar and circuit damage caused by the expansion of the light bar due to the heat generated by the light bar not being dissipated in time.

[0055] Please refer to Figures 2-4 , Figure 3 is Figure 2 the cross-sectional structure diagram of A-A direction in Figure 4 is Figure 2A cross-sectional structure schematic view of the B-B direction. In this embodiment, the part corresponding to the lamp plate of the support part 41 is recessed away from the light bar 20 to form a first limiting groove 411, the depth of the first limiting groove 411 matches the thickness of the substrate 21 of the lamp plate, and the width of the first limiting groove 411 matches the width of the light bar 20, so that the light bar 20 is embedded in the first limiting groove 411. That is, the area corresponding to the lamp plate of the support part 41 has a recessed part to form a first limiting groove 411, the width and depth of the first limiting groove 411 match the thickness and width of the substrate 21 of the light bar 20, the light bar 20 is embedded in the first limiting groove 411, and the surface of the light bar 20 away from the light guide plate 30 and the surface of the light bar 20 along the width direction are all attached to the support part 41, so that the support part 41 can completely protect the light bar 20, and when an external force is applied, the support part 41 can evenly distribute the external force on the surface of the light bar 20 attached to it, avoiding the problem of local stress of the light bar 20 and breakage or damage. By embedding the light bar 20 in the first limiting groove 411, the light bar 20 is limited, so that the position between the light bar 20 and the support part 41 always remains stable, avoiding the problem of loosening between the light bar 20 and the support part 41 or the light bar 20 falling off, thereby ensuring that the protection effect of the support assembly 40 on the light bar 20 does not deteriorate.

[0056] In this embodiment, the support assembly 40 further comprises a plurality of first limiting parts 42, which are arranged on both sides of the light bar 20 along the width direction and connected to the support part 41. It should be noted that the width direction here refers to the width direction of the light bar 20. One end of the first limiting part 42 away from the support part 41 abuts against the light guide plate 30 (see Figure 1 ), so that the distance between the light emitting element 22 and the light guide plate 30 always remains a predetermined distance. Specifically, the first limiting part 42 and the support part 41 are an integral structure, that is, the support assembly 40 is an integral structure, and the first limiting part 42 and the support part 41 are different parts of the support assembly 40. Not only does it save the connection structure between the support part 41 and the first limiting part 42, but also the first limiting part 42 is more firm and less likely to break and separate from the support part 41, and the structure is more stable, so that the distance between the light emitting element 22 and the light guide plate 30 always remains a predetermined distance, so as to ensure the coupling distance between the light emitting element 22 and the light guide plate 30, thereby improving the optical taste of the backlight module 100.

[0057] Specifically, the preset distance between the light emitting element 22 and the light guide plate 30 is 0.2-0.5 mm, for example, 0.2 mm, 0.3 mm, 0.4 mm or 0.5 mm, which can be set according to actual optical needs to achieve the desired optical effect, which is not limited. It should be noted that the distance between the light emitting element 22 and the light guide plate 30 refers to the vertical distance from the surface of the side of the light emitting element 22 close to the light guide plate 30 to the light-incident surface of the light guide plate 30; generally, if the surface of the side of the light emitting element 22 close to the light guide plate 30 is a plane, the plane is parallel to the light-incident surface of the light guide plate 30, and if the surface of the side of the light emitting element 22 close to the light guide plate 30 is a hemisphere, the distance between the light emitting element 22 and the light guide plate 30 is the vertical distance from the top of the hemisphere to the light-incident surface of the light guide plate 30, which is the same in the following embodiments. By abutting the first limiting portion 42 against the light-incident surface of the light guide plate 30, when the light guide plate 30 expands and deforms, the first limiting portion 42 can provide a reaction force to the light guide plate 30 to prevent the light guide plate 30 from further expanding, so that under the reaction force, the light emitting element 22 and the light guide plate 30 can be prevented from being too close to each other due to the expansion and deformation of the light guide plate 30, which can cause the light coupling distance to be too small and the light emitting quality of the backlight module 100 to be reduced. Further, the number of first limiting portions 42 arranged on both sides of the light plate can be set according to actual needs, for example, 1, 2, 3, 4, 6, 8, 10, etc., to achieve the desired effect, and the distance between adjacent first limiting portions 42 on the same side can also be set according to actual needs, which is not limited. The shape of the first limiting portion 42 can also be set according to actual needs, for example, rectangular, trapezoidal or any other shape, to achieve the desired effect, which is not limited.

[0058] Please refer to Figures 5-7 , Figure 5 is a structural schematic view of a support assembly and a light bar provided by the second embodiment of the present application, Figure 6 is Figure 5 a sectional view structure schematic view of C-C direction in Figure 7 is Figure 5The schematic view of the cross section structure of the D-D direction. In this embodiment, the support assembly 40 is also an integral structure, and the support assembly 40 comprises a support part 41 and a second limiting part 43. The support part 41 is a flat plate, and the length and width of the support part 41 match the length and width of the light bar 20, so as to protect the light bar 20 as a whole and reduce the damage of the light bar 20 caused by external force. The second limiting parts 43 are arranged on both sides of the light bar 20 along the width direction and connected to the support part 41. That is, the second limiting parts 43 are arranged on both sides of the support part 41 along the width direction and connected to the support part 41, forming a structure similar to a "U" type groove, so that the light bar 20 can be embedded in the "U" type groove and limited, so that the relative position of the light bar 20 and the support part 41 is always stable, avoiding the displacement or loosening between the light bar 20 and the support part 41, which causes the light bar 20 to fall off and other problems, so as to ensure that the protection effect of the support assembly 40 on the light bar 20 is not poor. It should be noted that the width direction herein refers to the width direction of the light bar 20.

[0059] Specifically, the end of the second limiting part 43 away from the support part 41 abuts against the light guide plate 30, so that the distance between the light emitting element 22 and the light guide plate 30 is kept at a predetermined distance. The predetermined distance is 0.2-0.5 mm, for example, 0.2 mm, 0.3 mm, 0.4 mm or 0.5 mm, which can be set according to actual optical needs to achieve the desired optical effect, which is not limited. By setting the second limiting part 43, when the light guide plate 30 expands and deforms, the second limiting part 43 can provide a counterforce to prevent the light guide plate 30 from further expanding, so that under the counterforce, the light emitting element 22 and the light guide plate 30 are prevented from being too close due to the expansion and deformation of the light guide plate 30, which reduces the coupling distance and reduces the light output quality of the backlight module 100. Further, the number of second limiting parts 43 arranged on both sides of the light bar can be set according to actual needs to achieve the desired effect, and the distance between adjacent second limiting parts 43 on the same side can also be set according to actual needs, which is not limited. Similarly, the shape of the second limiting part 43 can also be set according to actual needs, for example, rectangular, trapezoidal or any other shape, to achieve the desired effect, which is not limited.

[0060] Please refer to Figure 8 , Figure 8 is the structure schematic view of the backlight module provided by the second embodiment of the present application. The backlight module 100 in this embodiment is a side-in type module, which is the same as the first embodiment. However, the structure of the light bar and the support assembly 40 in this embodiment is slightly different from that in the first embodiment, which will be described below.

[0061] Please refer to Figures 9-13 , Figure 9 isFigure 8 A schematic diagram of the structure of the support assembly and light strip provided in one embodiment on the side near the back plate 10. Figure 10 yes Figure 9 A schematic diagram of the cross-sectional structure along the EE direction. Figure 11 yes Figure 8 A schematic diagram of other shapes of the support component provided in one embodiment is shown. Figure 12 yes Figure 8 A schematic diagram of the structure of the support assembly and light strip on the side near the light guide plate according to one embodiment. Figure 12 yes Figure 8 A schematic diagram of the structure of the support assembly and light strip on the side near the light guide plate according to one embodiment. Figure 13 yes Figure 12 A cross-sectional view of the structure along the FF direction. In this embodiment, a support component 40 is provided, which includes a support portion 41 and a third limiting portion 44. The support portion 41 is plate-shaped, specifically including a main body portion 412 and multiple branch portions 413. The main body portion 412 extends along the length direction of the light strip 20, and the multiple branch portions 413 are located on opposite sides of the main body portion 412 and connected to the main body portion 412, forming a tree-like shape with the main body portion 412 as the trunk and the multiple branch portions 413 as branches. The support portion 41 fits against the light strip 20 and can be regarded as adding a "skeleton" to the light strip 20 to support and protect the light strip 20 and prevent the light strip 20 from being broken or damaged by external forces. Specifically, the length of the main body 412 is approximately the same as the length of the light strip 20, and the distance from the outermost edge of the branch 413 on one side of the main body 412 to the outermost edge of the branch 413 on the other side of the main body 412 is approximately the same as the width of the light strip 20. That is, the overall length and width of the support 41 are matched with the length and width of the light strip 20, so that the support 41 can protect the entire light strip 20 and avoid the problem of local damage caused by the lack of protection of some parts of the light strip 20.

[0062] Specifically, such as Figures 9-11 As shown, the main body 412 extends along the length of the light strip 20, and its shape can be rectangular or other shapes. The branch 413 extends along the width of the light strip 20, and its shape can be rectangular, triangular, trapezoidal, or other shapes, depending on actual needs and without specific limitations. The branch 413 on both sides of the main body 412 can be symmetrically distributed or staggered, depending on actual needs and without specific limitations. Multiple branch 413 located on the same side of the main body 412 can be arranged at equal or non-equal distances along the length of the main body 412, depending on actual needs.

[0063] Furthermore, such as Figure 9 andFigure 10 As shown in the drawings, in the embodiment, the substrate 21 of the light bar 20 has a second limiting groove 414 on the side close to the support part 41, the depth of the second limiting groove 414 is 0.1-0.3 mm, the shape of the second limiting groove 414 matches the shape of the support part 41, so that the support part 41 is embedded in the second limiting groove 414, so that the support part 41 is limited in the second limiting groove 414, the relative position of the support part 41 and the light bar 20 is more stable, and the problem that the light bar 20 and the support part 41 are dislocated, loose or fall off, resulting in that the support and protection effect of the support assembly 40 on the light bar 20 is reduced or invalid. At the same time, by embedding the support part 41 in the second limiting groove 414, the overall thickness of the support part 41 and the light bar 20 can be reduced, which is beneficial to the narrow frame design of the module. Specifically, the second limiting groove 414 can be etched on the surface of the substrate 21 of the light bar 20 close to the support part 41 by etching, or other methods can be used to form the second limiting groove 414, which is not limited.

[0064] As shown in the drawings, Figure 12 and Figure 13 As shown in the drawings, in the embodiment, the plurality of third limiting parts 44 are arranged along the length direction of the main part 412 and connected to the main part 412, and the support assembly 40 forms an integral structure with the main part 412. Specifically, the substrate 21 of the light bar 20 has a through hole 211 at the position corresponding to the third limiting part 44, and the third limiting part 44 passes through the through hole 211 and abuts against the light guide plate 30, so that the distance between the light emitting element 22 and the light guide plate 30 is kept at a predetermined distance, thereby ensuring that the coupling distance between the light bar 20 and the light guide plate 30 remains constant, so that the light output quality of the backlight module 100 is more stable.

[0065] It should be noted that the position of the through hole 211 needs to avoid the position of the circuit on the substrate 21, so as to avoid damaging the circuit by opening the through hole 211, thereby causing problems in the electrical connection of the light bar 20 and unable to normally emit light; corresponding to the through hole 211, the third limiting part 44 is arranged corresponding to the position of the through hole 211, so that the third limiting part 44 can smoothly pass through the through hole 211, which is beneficial to the assembly of the support assembly 40 and the light bar 20. Specifically, the through hole 211 can be etched on the position without wiring on the substrate 21 by etching, or the through hole 211 can be cut on the position without wiring on the substrate 21 by laser.

[0066] Further, in all the above embodiments, the thickness of the support portion 41 in the direction perpendicular to the lamp panel is 0.2-0.5 mm, that is, the thickness of the support portion 41 in the direction perpendicular to the lamp strip 20 is 0.2-0.5 mm, to meet the mechanical strength requirement of the lamp strip 20 on the support portion 41. Specifically, the thickness of the support portion 41 can be set according to the mechanical strength requirement of the lamp strip 20 on the support portion 41; for example, when the mechanical strength requirement of the support portion 41 is low, the thickness of the support portion 41 can be 0.2 mm or 0.3 mm; when the mechanical strength requirement of the support portion 41 is moderate, the thickness of the support portion 41 can be 0.3 mm or 0.4 mm; and when the mechanical strength requirement of the support portion 41 is high, the thickness of the support portion 41 can be 0.4 mm or 0.5 mm.

[0067] Further, in all the embodiments of the present application, the backlight module 100 further comprises a heat-conducting adhesive layer 50, and the support portion 41 and the lamp strip 20 are attached through the heat-conducting adhesive layer 50, so that the support portion 41 and the lamp panel are tightly combined, and the heat-conducting adhesive layer 50 can also serve as a buffer layer between the support portion 41 and the lamp panel, to avoid the uneven surface of the support portion 41 from exerting a local force on the lamp strip 20 to cause the lamp strip 20 to break and be damaged. At the same time, the heat-conducting adhesive layer 50 can also quickly transfer the heat generated by the lamp strip 20 to the support portion 41, so that the heat is dissipated in time, further improving the heat dissipation capability. Specifically, the heat-conducting adhesive layer 50 can be heat-conducting double-sided adhesive or heat-conducting silicone, which can be set according to actual needs, and no specific limitation is made herein.

[0068] Specifically, in the above embodiments, the backlight module 100 further comprises an optical film 60, which is arranged on the side of the light guide plate 30 away from the bottom plate 11 and on the light exit side, to optimize the light emitted from the light exit side of the light guide plate 30, balance the light field, and thus improve the light exit quality of the backlight module 100.

[0069] Specifically, in the above embodiments, the backlight module 100 further comprises a reflective layer 70, which is arranged between the back plate 10 and the light guide plate 30, to reflect the light at the bottom of the module to the light guide plate 30 for being guided out through the light guide plate 30, thereby preventing light leakage of the backlight module 100 and improving the light utilization rate.

[0070] Please refer to Figure 14 , Figure 14is a structural schematic view of a backlight module provided in a third embodiment of the present application. In the embodiment, a backlight module 100 is provided, which is a direct type module. The lamp panel in the backlight module 100 is assembled by a plurality of lamp strips 20. The number of the lamp strips 20 can be set according to the size and brightness requirement of the backlight module 100, and no specific limitation is made thereto. Each lamp strip 20 corresponds to a support assembly 40 to protect each lamp strip 20 from being broken or cracked due to external force. Different from the above embodiments, the support assembly 40 in the embodiment only includes a support portion 41, and does not need to be provided with a limiting portion. Specifically, the support assembly 40 includes the support portion 41, and the specific structure and function of the support portion 41 are the same as or similar to those of the support portion 41 in the above embodiments, and can achieve the same technical effects. For details, reference can be made to the above description, which will not be repeated here. It can also be understood that the support assembly 40 in the above embodiments without the first limiting portion 42 is the support assembly 40 in the embodiment. Figures 2-4 The specific structure and function of the support portion 41 and the lamp panel in the embodiment are the same as or similar to those of the support portion 41 and the lamp panel in the above embodiments, and can achieve the same technical effects. For details, reference can be made to the above description, which will not be repeated here. It can also be understood that the support assembly 40 in the above embodiments without the first limiting portion 42 is the support assembly 40 in the embodiment. Figures 2-4 The specific structure and function of the support portion 41 and the lamp panel in the embodiment are the same as or similar to those of the support portion 41 and the lamp panel in the above embodiments, and can achieve the same technical effects. For details, reference can be made to the above description, which will not be repeated here. It can also be understood that the support assembly 40 in the above embodiments without the first limiting portion 42 is the support assembly 40 in the embodiment.

[0071] Please refer to Figure 15 , Figure 15 is a structural schematic view of a backlight module provided in a fourth embodiment of the present application. In the embodiment, a backlight module 100 is provided, which is a direct type module. The same as the last embodiment, the lamp panel is assembled by a plurality of lamp strips 20, and each lamp strip 20 corresponds to a support assembly 40 to protect each lamp strip 20. In the embodiment, the support assembly 40 only includes a support portion 41, and does not need to be provided with a limiting portion. The specific structure and function of the support portion 41 and the lamp panel are the same as or similar to those of the support portion 41 and the lamp panel in the above embodiments, and can achieve the same technical effects. For details, reference can be made to the above description, which will not be repeated here. It can also be understood that the support assembly 40 in the above embodiments without the first limiting portion 42 is the support assembly 40 in the embodiment. Figures 9-13 The specific structure and function of the support portion 41 and the lamp panel in the embodiment are the same as or similar to those of the support portion 41 and the lamp panel in the above embodiments, and can achieve the same technical effects. For details, reference can be made to the above description, which will not be repeated here. It can also be understood that the support assembly 40 in the above embodiments without the first limiting portion 42 is the support assembly 40 in the embodiment. Figures 9-13 The specific structure and function of the support portion 41 and the lamp panel in the embodiment are the same as or similar to those of the support portion 41 and the lamp panel in the above embodiments, and can achieve the same technical effects. For details, reference can be made to the above description, which will not be repeated here. It can also be understood that the support assembly 40 in the above embodiments without the first limiting portion 42 is the support assembly 40 in the embodiment.

[0072] Please refer to Figure 16 , Figure 16is a structural schematic diagram of a backlight module provided by a fifth embodiment of the present application. In the present embodiment, a backlight module 100 is provided, which is a curved module and can be applied to a curved display device. In the present embodiment, the light guide plate 30 is a curved plate, and the curvature of the light guide plate 30 is the same as that of the module; the lamp plate is assembled by a plurality of lamp strips 20, the lamp strip 20 is a curved strip, and the curvature of the lamp strip 20 is the same as that of the module; each lamp strip 20 corresponds to a support assembly 40, and the support assembly 40 includes a support portion 41, which is in close contact with the lamp strip 20, and the curvature of the support portion 41 is also the same as that of the lamp strip 20. Specifically, the support portion 41 can have a limiting groove, and the lamp strip 20 is embedded in the limiting groove, so that the relative position of the support portion 41 and the lamp strip 20 remains stable, avoiding loosening or falling off of the lamp strip 20, and at the same time, the lamp strip 20 can be protected in all directions to improve the protection effect. Alternatively, the back surface of the substrate 21 of the lamp strip 20 has a limiting groove, and the support portion 41 is embedded in the limiting groove as the “skeleton” of the lamp strip 20 to protect the lamp strip 20, and the support portion 41 also includes a main body portion 412 and a branch portion 413 to strengthen the protection effect of the lamp strip 20.

[0073] Please refer to Figure 17 , Figure 17 is a structural schematic diagram of a display device provided by an embodiment of the present application. In the present embodiment, a display device is provided, which includes a display panel 200 and a backlight module 100. Among them, the display panel 200 is used for displaying images, and the display panel 200 can be a liquid crystal panel or an electrophoretic panel and other display panels 200 that need a backlight source. The backlight module 100 is arranged opposite to the display panel 200 and is used for providing a backlight source for the display panel 200. Specifically, the display panel 200 receives the backlight source and controls the pass rate of light to control the display brightness or gray scale of the sub-pixel, so as to display the corresponding image. Specifically, the specific structure and function of the backlight module 100 are the same as or similar to those of the backlight module 100 involved in the above embodiments, and the same technical effects can be achieved, and for reference can be made to the above introduction, which will not be described here.

[0074] The above is only an embodiment of the present application, and does not limit the patent protection scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings of the present application, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A backlight module, comprising: a back plate; a lamp plate arranged on one side of the back plate, the lamp plate comprising a lamp strip, the lamp strip comprising a substrate and a light emitting element, the light emitting element being packaged on the substrate; a light guide plate arranged on a side of the light emitting element away from the substrate; characterized in that the substrate is a glass substrate; the backlight module further comprises a support assembly for supporting the lamp strip; the support assembly comprises a support portion arranged between the back plate and the lamp strip, the support portion being fixedly connected with the lamp strip and being in close contact with each other, the length and width of the support portion matching the length and width of the lamp strip respectively, the support assembly comprising a metal material; the backlight module further comprises a heat-conducting adhesive layer, the support portion and the lamp strip being in close contact through the heat-conducting adhesive layer, the heat-conducting adhesive layer serving as a buffer layer between the support portion and the lamp plate; wherein the substrate has a second limiting groove on a side close to the support portion, the support portion being embedded in the second limiting groove; the support portion comprises a main body portion and a plurality of branch portions, the main body portion extending along the length direction of the lamp strip, the plurality of branch portions being arranged on opposite sides of the main body portion and being connected to the main body portion, the overall trend of the branch portions extending along the width direction of the lamp strip.

2. The backlight module of claim 1, wherein, the support assembly further comprises a plurality of third limiting portions, the plurality of third limiting portions being arranged along the length direction of the main body portion and being connected to the main body portion; the substrate has a through hole at a position corresponding to the third limiting portion, the third limiting portion passing through the through hole and abutting against the light guide plate, so that the distance between the light emitting element and the light guide plate is kept at a preset distance.

3. The backlight module of claim 1, wherein, the depth of the second limiting groove is 0.1-0.3mm.

4. The backlight module of claim 1, wherein, the thickness of the support portion in a direction perpendicular to the lamp plate is 0.2-0.5mm.

5. The backlight module of claim 1, wherein, the light guide plate is a curved plate, the lamp strip and the support portion are curved strips, and the curvature of the curved strips is the same as the curvature of the light guide plate.

6. A display device, characterized by comprising: the display device comprises: a display panel for displaying an image; a backlight module arranged opposite to the display panel, for providing a backlight source to the display panel, the backlight module being the backlight module according to any one of claims 1-5.

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