Backlight module and display device

Abstract

This application discloses a backlight module (20) and a display device (10). The backlight module (20) includes a bracket (100), a lamp plate (200), and a plurality of lamp beads (300). The bracket (100) is provided with a lamp plate mounting groove (110), and heat dissipation openings (120) are provided on at least both sides of the bracket (100). The lamp plate (200) is mounted in the lamp plate mounting groove (110), and a cavity (210) is formed inside the lamp plate (200). The cavity (210) communicates with the heat dissipation openings (120). The lamp beads (300) are provided on the lamp plate (200), and the lead pins of the lamp beads (300) extend into the cavity (210). The bracket (100) and the lamp plate (200) form a support structure of the backlight module (20).

Description

Technical Field

[0001] This application claims the priority of a Chinese patent application filed with the China National Intellectual Property Administration on August 23, 2022, with the application number 2022110115434 and the application title "Backlight Module and Display Device", and all of its content is incorporated herein by reference.

[0002] The present invention relates to the field of display technologies, and more particularly to a backlight module and a display device.

Background Art

[0003] The descriptions herein only provide background information related to the present application and do not necessarily constitute prior art. Liquid crystal displays have had years of development experience and the technology is relatively mature. However, as market demands for ultra-thinness, high color gamut, and low power consumption are increasing, each screen manufacturer is also actively responding and developing more competitive products. Displays using Mini LEDs can achieve better overall ultra-thinness, high dynamic range imaging (HDR) performance, higher contrast, high resolution, and low power consumption goals, and the display effect can be comparable to that of OLEDs (Organic Light Emitting Diode), providing consumers with an excellent viewing experience and bringing more diverse display consumption selection opportunities to the market.

[0004] LEDs generate a lot of heat during use, and the heat generated by LEDs mainly comes from the lead pins of the LEDs. Therefore, it is easy to lead to an increase in the power consumption of the backlight module and a decrease in its service life. Therefore, how to efficiently dissipate the heat of the LED lead pins, reduce the power consumption of the backlight module, and improve the service life of the backlight module is one of the major obstacles to the development of Mini LED display technology.

Summary of the Invention

[0005] An object of the present application is to provide a backlight module and a display device that reduce power consumption of the backlight module and improve the service life of the backlight module.

[0006] The present application discloses a backlight module, the backlight module includes a bracket, at least one lamp plate, and a plurality of lamp beads. At least one lamp plate mounting groove is provided in the bracket. Heat dissipation openings are provided on at least both sides of the bracket corresponding to the lamp plate mounting groove. The heat dissipation openings penetrate the side wall of the bracket. The lamp plate is installed in a one-to-one correspondence with the lamp plate mounting groove and fixed in the lamp plate mounting groove. The inside of the lamp plate is hollowed out to form a cavity. The cavity communicates with the heat dissipation opening in the bracket. The lamp beads are installed on the lamp plate, and the lead pins of the lamp beads extend into the cavity. Here, the bracket and the lamp plate form a support structure of the backlight module.

[0007] This application discloses a backlight module, which includes a bracket, a plurality of lamp plates, and a plurality of lamp beads. The bracket is provided with a plurality of lamp plate mounting grooves, and the lamp plate mounting grooves are through grooves that penetrate the bracket. The bracket includes a frame portion and a skeleton portion. The skeleton portion is composed of a plurality of vertically and horizontally intersecting branches. The frame portion is installed surrounding the skeleton portion. Heat dissipation openings are provided at four sides of the frame portion corresponding to the positions of the lamp plate mounting grooves. An air duct is provided on each branch, and the air duct penetrates the branch to both sides of the lamp plate mounting groove. The heat dissipation openings, air ducts, and cavities form a heat dissipation path. The lamp plates are installed in one-to-one correspondence with the lamp plate mounting grooves and are fixed in the lamp plate mounting grooves. The lamp plate includes a top plate, a support member, and a bottom plate. The support member is located between the top plate and the bottom plate and is connected to the top plate and the bottom plate, forming a cavity between the top plate and the bottom plate. The lamp beads are installed on the top plate, and the lead pins of the lamp beads penetrate the top plate and extend into the cavity. Here, the bracket and the lamp plate form a support structure of the backlight module.

[0008] The present application further discloses a display device, which includes a display panel and a backlight module. The backlight module provides a backlight for the display panel. The backlight module includes a bracket, at least one lamp plate, and a plurality of lamp beads. At least one lamp plate mounting groove is provided on the bracket. Heat dissipation openings are provided on at least both sides of the bracket corresponding to the lamp plate mounting groove. The heat dissipation openings penetrate the side wall of the bracket. The lamp plate is installed corresponding one-to-one with the lamp plate mounting groove and fixed in the lamp plate mounting groove. The inside of the lamp plate is hollowed out to form a cavity. The cavity communicates with the heat dissipation openings in the bracket. The lamp beads are installed on the lamp plate, and the lead pins of the lamp beads extend into the cavity. Here, the bracket and the lamp plate form a support structure of the backlight module.

[0009] In contrast to the conventional backlight module, in which the lamp plate is arranged on the back plate and the back plate is used to dissipate heat from the lamp plate, in the present application, the back plate structure in the backlight module is omitted, and a bracket structure for fixing the lamp plate is additionally provided. The lamp plate and the bracket are combined to form a support structure of the backlight module. By providing heat dissipation openings on different sides of the bracket, a hollow structure is formed in the lamp plate to form a cavity, and the cavity is communicated with these heat dissipation openings to form an air flow passage communicating with the outside. In this way, the external air flow can enter from one heat dissipation opening, pass through the cavity and exit from the other heat dissipation opening, achieving the effect of air flow circulation. Thereby, the external cold air can directly take away the heat on the lamp plate and the heat extending to the lead pins in the cavity, effectively dissipating the heat of the lead pins of the lamp beads, reducing the power consumption of the backlight module, and achieving the purpose of improving the service life of the backlight module.

Brief Description of the Drawings

[0010] The accompanying drawings are used to provide a further understanding of the embodiments of the present application, form part of the specification, illustrate the embodiments of the present application, and explain the principles of the present application together with the written description. As is clear, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative efforts.

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Embodiments for Carrying out the Invention

[0011] It should be understood that the terms used here, the details of the disclosed specific structures and functions are only for explaining specific embodiments, are representative, but the present application may be specifically realized in many alternative forms and should not be limited only to the embodiments described here.

[0012] In the description of the present application, the terms "first" and "second" are merely used for the purpose of explanation and should not be construed as indicating relative importance or implicitly indicating the number of the indicated technical features. Also, terms indicating orientation or positional relationship such as "center", "lateral direction", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are described based on the orientation or relative positional relationship shown in the drawings, and are only for the purpose of facilitating the simplified description of the present application, and do not indicate that the indicated device or component must have a specific orientation and be structured and operated in a specific orientation, so the present application should not be construed as being limited thereby.

[0013] Hereinafter, the present application will be described in detail with reference to the drawings and selected embodiments.

[0014] As shown in FIGS. 1, 2 and 4, an embodiment of the present application discloses a backlight module 20 designed using a direct-bottom backlight. The backlight module 20 includes a bracket 100, a lamp plate 200, lamp beads 300 and other structures. The bracket 100 is provided with a lamp plate mounting groove 110 for fixing the lamp plate 200. At least both sides of the bracket 100 corresponding to the lamp plate mounting groove 110 are provided with heat dissipation openings 120, that is, at least two side surfaces of the bracket 100 are provided with heat dissipation openings 120, which may be two side surfaces, or may be three side surfaces or four side surfaces, and the heat dissipation openings 120 penetrate through the side walls of the bracket 100.

[0015] The interior of the lamp plate 200 is hollowed out to form a cavity 210. The cavity 210 communicates with at least two heat dissipation openings 120 in the bracket 100. The lamp beads 300 are installed on the lamp plate 200, and the lead pins 310 of the lamp beads 300 extend into the cavity 210. Here, the bracket 100 and the lamp plate 200 form a support structure of the backlight module 20.

[0016] In the conventional backlight module 20, the lamp plate 200 is arranged on the back plate, and heat dissipation is performed on the lamp plate 200 by using the back plate. In the present application, the back plate structure in the backlight module 20 is omitted, and further, the bracket 100 structure for fixing the lamp plate 200 is added. The lamp plate 200 and the bracket 100 are combined to form a support structure of the backlight module 20, that is, the back structure of the backlight module 20. By providing heat dissipation ports 120 on different sides of the bracket 100, a hollow structure is formed in the lamp plate 200 to form a cavity 210, and the cavity 210 and these heat dissipation ports 120 are communicated to form an air flow passage communicating with the outside. In this way, external air flow can enter from one heat dissipation port 120, pass through the cavity 210 and exit from the other heat dissipation port 120, and the effect of circulating the air flow can be achieved. Thereby, the cold air outside can directly take away the heat on the lamp plate 200 and the heat extending to the lead pins 310 in the cavity 210, effectively dissipate the heat of the lead pins 310 of the lamp beads 300, reduce the power consumption of the backlight module 20, and achieve the purpose of improving the service life of the backlight module 20.

[0017] In the embodiments of the present application, the number of lamp plates 200 in the backlight module 20 may be only one. In this case, the bracket 100 is provided with only one lamp plate mounting groove 110, and the cavity 210 in the lamp plate 200 directly communicates with all the heat dissipation ports 120 in the bracket 100 to form an air flow path. The number of lamp plates 200 in the backlight module 20 may be a plurality, where the plurality here means two or more. The bracket 100 also corresponds to a plurality of lamp plate mounting grooves 110, and the lamp plates 200 are mounted one-to-one in the lamp plate mounting grooves 110. In this case, the cavities 210 in each lamp plate 200 communicate with each other to form an air flow path with the heat dissipation ports 120 in the bracket 100. In this embodiment, the backlight module 20 having eight lamp plates 200 is taken as an example for description, but it does not mean that it is preferred to adopt the backlight module 20 having eight lamp plates 200 in this embodiment.

[0018] Each lamp plate 200 is provided with a plurality of lamp beads 300. These lamp beads 300 may adopt general LED lamp beads 300 or Mini LED lamp beads 300, and are not limited here.

[0019] As shown in FIG. 2, in the bracket 100, the lamp plate mounting groove 110 is a through groove that penetrates the bracket 100. In this case, the bracket 100 has a grid-like structure. Specifically, the bracket 100 includes a frame portion 130 and a skeleton portion 140. The skeleton portion 140 is composed of a plurality of branches 141 intersecting vertically and horizontally. The frame portion 130 has a square annular structure and is installed surrounding the skeleton portion 140. Heat dissipation ports 120 are provided at least on both sides of the frame portion 130 at positions corresponding to the lamp plate mounting grooves 110. Each branch 141 is provided with an air duct 142. The air duct 142 penetrates the branch 141 to both sides of the lamp plate mounting groove 110. The heat dissipation ports 120, the air ducts 142, and the cavities 210 form a heat dissipation path.

[0020] Of course, the lamp plate mounting groove 110 may be a blind groove, that is, the lamp plate mounting groove 110 does not penetrate through the bracket 100. Even if designed in this way, it will not affect the air flow in the heat dissipation path. Relatively speaking, after the lamp plate mounting groove 110 is made into a through groove, the bottom of the lamp plate 200 directly leaks from the bracket 100, and the lamp plate 200 is directly exposed to the outside as the bottom of the backlight module 20, making it easier to dissipate heat.

[0021] Furthermore, the interior of the bracket 100 is hollow, that is, in the bracket 100, both the skeleton part 140 and the frame part 130 have a hollow structure. In this case, the interiors of the respective branches 141 in the bracket 100 communicate with each other, and at the same time, the cavities 210 in each lamp plate 200 also communicate with each other. The entire interior space of the bracket 100 and all the lamp plates 200 communicate with each other. In this way, the external air flow can flow through the interiors of the bracket 100 and all the lamp plates 200, taking away the heat of each region and uniformly dissipating the heat of the backlight module 20.

[0022] Also, as shown in FIG. 3, when the frame part 130 has a hollow structure, the corresponding heat dissipation ports 120 are arranged on the four outer sides of the frame part 130, and each heat dissipation port 120 on each side is arranged corresponding to the lamp plate 200. The heat dissipation port 120 is arranged on the side of the frame part 130 away from the skeleton part 140, and the heat dissipation port 120 has a porous structure arranged in an array, preventing external dust and foreign objects from entering the interior of the backlight module 20. A hollowed-out part 131 is hollowed out on the side of the frame part 130 facing the skeleton part 140, and the hollowed-out part 131 corresponds to one side of the cavity 210. After hollowing out the interior of the frame part 130, the depth of the heat dissipation port 120 is small, and the external air can more quickly fill or exchange the air in the cavity of the lamp plate 200, achieving better heat dissipation.

[0023] Optionally, the porous heat dissipation port 120 can be in the shape of a frustum of a cone. The cross-sectional area of the heat dissipation port 120 facing the lamp plate 200 is larger than the cross-sectional area facing the outside of the heat dissipation port 120, that is, the cross-sectional area away from the lamp plate 200. In this way, although there is a lot of air surging in from the outside, less air enters the inside of the backlight module 20, forming a negative pressure state, accelerating the entry of external air into the backlight module 20, improving the flow rate of the air inside the backlight module 20, and improving the heat dissipation efficiency.

[0024] The bracket 100 has an integrally formed structure, that is, the frame portion 130 and the skeleton portion 140 are manufactured together. Thus, when the bracket 100 is hollow inside, it can still be guaranteed to have high strength and stability. Also, the bracket 100 may be made of an aluminum alloy material. In this way, when reducing the cost of the bracket 100 and decreasing the weight of the bracket 100, the bracket 100 itself can have good heat absorption and heat dissipation effects, accelerating the release of heat in the lamp plate 200, and further improving the heat dissipation effect of the entire backlight module 20. Of course, the bracket 100 may be made of other metals or other materials.

[0025] In the lamp plate 200, the design of the cavity 210 corresponds to the design of the heat dissipation port 120 in the bracket 100. When the heat dissipation port 120 is provided only on two pairs of sides of the bracket 100, the cavity 210 is a passage that penetrates through the lamp plate 200 in the front-rear direction. When the heat dissipation port 120 is located on four sides of the bracket 100, the cavity 210 is a hollow structure with four open sides.

[0026] In this case, as shown in FIGS. 4, 5, and 6, the lamp plate 200 includes a top plate 220, a support member 230, and a bottom plate 240. The support member 230 is located between the top plate 220 and the bottom plate 240 and is connected to the top plate 220 and the bottom plate 240, forming a cavity 210 between the top plate 220 and the bottom plate 240. The lead pins 310 of the lamp beads 300 penetrate the top plate 220 and extend into the cavity 210. Also, the lamp plate 200 adopts an integrated design, that is, it is integrally formed by the top plate 220, the support member 230, and the bottom plate 240. Thereby, the processing of the lamp plate 200 can be facilitated, and the stability of the lamp plate 200 can be improved.

[0027] The support member 230 includes four corner support columns 231 and one middle support column 232. The four corner support columns 231 respectively correspond to the four corners of the lamp plate 200, connecting the four corners of the top plate 220 and the four corners of the bottom plate 240 respectively. The middle support column 232 is located at the center of the lamp plate 200, connecting the center of the top plate 220 and the center of the bottom plate 240. The bottom plate 240 and the top plate 220 of each lamp plate 200 are supported and fixed by five points. When the internal space of the lamp plate 200 is ensured, it is also avoided that the top plate 220 and the bottom plate 240 are bent by receiving force.

[0028] Also, the horizontal cross-section of the corner support column 231 may be square. When the lamp plate 200 is inserted into the lamp plate mounting groove 110, the four corner support columns 231 of the lamp plate 200 just abut against the four corner angles of the lamp plate mounting groove 110, positioning the lamp plate 200 and facilitating the installation of the lamp plate 200. The cross-section of the middle support column 232 may be rectangular, circular, or other shapes.

[0029] After the lamp plate 200 is inserted into the lamp plate mounting groove 110, the bottom of the lamp plate 200 and the bottom of the bracket 100 are flush. Since the lamp plate 200 and the bracket 100 function as the back of the backlight module 20, the neat structure improves the aesthetics of the backlight module 20. After making the bottom of the lamp plate 200 and the bottom of the bracket 100 flush, a sealant is further filled into the gap between the bottom plate 240 and the bracket 100, which can improve the waterproof effect of the back of the backlight module 20 and the stability between the lamp plate 200 and the bracket 100.

[0030] As shown in FIG. 6, after the lamp plate 200 is inserted into the lamp plate mounting groove 110, the bracket 100 and the lamp plate 200 form a plurality of heat dissipation passages. The direction of the arrow in the figure indicates the direction of the air flow. After the air in the cavity of the lamp plate 200 thermally expands, the air inside and outside the lamp plate 200 is allowed to flow.

[0031] The width of the cavity 210 is the distance between two adjacent corner support columns 231 on one lamp plate 200. In this case, the width of the air duct 142 is not less than the width of the cavity 210, and the width of the hollowed-out part 131 in the frame part 130 is also not less than the width of the cavity 210. Thereby, the bracket 100 itself does not block the air flow. Optionally, the cross-sectional shapes of the air duct 142, the cavity 210, and the hollowed-out part 131 are the same. The three form a stable air flow passage, which helps to smoothly flow the air and achieve stable heat dissipation.

[0032] In the embodiment of the present application, the lamp plate 200 may be fixed singly in the lamp plate mounting groove 110 in the bracket 100. Specifically, it may be fixed one by one in a manner such as adhesion, snap fit or insertion, or an overall fixing method may be adopted. First, a single or multiple lamp plates 200 are fixed, and finally, they are inserted into the lamp plate mounting groove 110 in the bracket 100. Specifically, the backlight module 20 further includes a cover plate 250. The top plates 220 of the plurality of lamp plates 200 are fixed to the cover plate 250 in an array. The lamp beads 300 are fixed to the cover plate 250, and the lead pins 310 of the lamp beads 300 penetrate through the cover plate 250 and the top plate 220 and extend into the cavity 210. The edge bottom of the cover plate 250 abuts against the top of the frame portion 130 and is adhesively fixed to the frame portion 130. Alternatively, when only one lamp plate 200 is provided in the backlight module 20, after fixing this one lamp plate 200 to the cover plate 250, the lamp plate 200 can also be attached into the bracket 100 by adhering the edge bottom of the cover plate 250 and the top of the frame portion 130.

[0033] After adopting the above fixing method, the complicated process of aligning and attaching the lamp plates 200 one by one is avoided. By directly fixing the cover plate 250 to the bracket 100, the attachment and fixing of all the lamp plates 200 can be completed, which is simple and convenient. Moreover, due to the design of the cover plate 250, the risk of the lamp plate 200 falling off from the bracket 100 is avoided. In addition, the cover plate 250 covers both the lamp plate mounting groove 110 and the lamp plate 200, and by preventing hot air from flowing out in the direction of the lamp beads 300 through the gap between the lamp plate 200 and the bracket 100, the risk of temperature rise of the lamp beads 300 can be avoided.

[0034] In this case, the lamp plate 200 and the cover plate 250 may have an integrally formed structure. During assembly, it is only necessary to attach the lamp beads 300 to the cover plate 250 one by one. Of course, the lamp plate 200 may also have a separate structure from the lamp plate 200. During assembly, it is only necessary to attach the lamp plate 200 to the cover plate 250. In this way, the number of lamp plates 200 can be selected according to the actual situation, and more usage scenarios can be satisfied.

[0035] As shown in FIG. 7, the present application further discloses a display device. The display device 10 includes a display panel 50 and the backlight module 20 as described above. The display panel 50 may be a TN (Twisted Nematic) display panel, an IPS (In-Plane Switching) display panel, a VA (Vertical Alignment) display panel, an MVA (Multi-Domain Vertical Alignment) display panel, etc., and is not limited here. The backlight module 20 includes, in addition to the lamp plate 200, the bracket 100, the lamp beads 300, and the cover plate 250, a rubber frame 30 and an optical assembly 40. The rubber frame 30 is fixed to the frame portion 130 of the bracket 100, surrounds the cover plate 250 and is installed. Moreover, the top of the rubber frame 30 is higher than the top of the lamp beads 300. The edge of the optical assembly 40 is fixed to the rubber frame 30. Finally, the display panel 50 may be directly adhered to the optical assembly 40 or fixed to the rubber frame 30.

[0036] The above is a more detailed description of the present application with reference to specific embodiments, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For those skilled in the technical field to which the present application belongs, several simple derivations or substitutions can be made on the premise of not departing from the concept of the present application, and all should be regarded as belonging to the protection scope of the present application.

Claims

1. A bracket, provided with at least one lamp plate mounting groove, and heat dissipation openings are provided on at least both sides corresponding to the lamp plate mounting groove in the bracket, and the heat dissipation openings penetrate the side wall of the bracket, and the bracket, At least one lamp plate, installed corresponding one-to-one with the lamp plate mounting groove, fixed in the lamp plate mounting groove, the inside of the lamp plate is hollowed out to form a cavity, and the cavity communicates with the heat dissipation opening in the bracket, and at least one lamp plate, A plurality of lamp beads, installed on the lamp plate, and the lead pins of the lamp beads extend into the cavity, and a plurality of lamp beads, Here, the bracket and the lamp plate form a support structure of the backlight module. A backlight module, characterized in that.

2. The bracket is provided with a plurality of the lamp plate mounting grooves, and the lamp plate mounting groove is a through groove and penetrates the bracket. The backlight module according to claim 1, characterized in that.

3. The bracket is provided with a plurality of the lamp plate mounting grooves, and the lamp plate mounting groove is a blind groove and does not penetrate the bracket. The backlight module according to claim 1, characterized in that.

4. The bracket includes a frame portion and a skeleton portion, the skeleton portion is composed of a plurality of vertically and horizontally intersecting branches, the frame portion is installed surrounding the skeleton portion, and heat dissipation openings are provided on at least both sides of the frame portion corresponding to the positions of the lamp plate mounting grooves, and each branch is provided with an air duct, the air duct penetrates the branch on both sides of the lamp plate mounting groove, and the heat dissipation opening, the air duct and the cavity form a heat dissipation passage. The backlight module according to claim 2, characterized in that.

5. The heat dissipation openings are provided on four sides of the frame portion, the heat dissipation openings are installed on one side of the frame portion away from the skeleton portion, and the heat dissipation openings have a porous structure arranged in an array. A hollowed-out portion is formed by hollowing out one side of the frame portion facing the skeleton portion, and the hollowed-out portion corresponds to one side of the cavity. The backlight module according to claim 4, characterized in that.

6. The cross-sectional shape of the air duct, the cross-sectional shape of the cavity, and the cross-sectional shape of the hollowed-out portion are the same. The backlight module according to claim 5, characterized in that.

7. The cross-sectional area of the heat dissipation port facing the lamp plate is larger than the cross-sectional area of the heat dissipation port away from the lamp plate. The backlight module according to claim 5, characterized in that.

8. The lamp plate includes a top plate, a support member, and a bottom plate. The support member is located between the top plate and the bottom plate, connected to the top plate and the bottom plate, forms the cavity between the top plate and the bottom plate, and the lead pins of the lamp beads extend through the top plate into the cavity. The backlight module according to claim 4, characterized in that.

9. The bottom of the bottom plate and the bottom of the bracket are flush, and a sealant is filled in the gap between the bottom plate and the bracket. The backlight module according to claim 8, characterized in that.

10. The top plate, the support member, and the bottom plate are integrally formed. The backlight module according to claim 8, characterized in that.

11. The support member includes four corner support columns and one middle support column. The four corner support columns respectively correspond to the four corners of the lamp plate, connect the four corners of the top plate and the four corners of the bottom plate respectively. The middle support column is located at the center of the lamp plate, and connects the center of the top plate and the center of the bottom plate. The width of the cavity is equal to the distance between two adjacent corner support columns among one lamp plate, and the width of the air duct is not less than the width of the cavity. The backlight module according to claim 8, characterized in that.

12. The horizontal cross-section of the corner support column is square. The backlight module according to claim 11, characterized in that.

13. The backlight module further includes a cover plate. The top plates of a plurality of the lamp plates are fixed to the cover plate in an array. The lamp beads are fixed to the cover plate, and the lead pins of the lamp beads extend through the cover plate and the top plate into the cavity. The edge bottom of the cover plate abuts against the top of the frame portion and is adhesively fixed to the frame portion. The backlight module according to claim 8, characterized in that.

14. The lamp plate and the cover plate have an integrally formed structure, and the bracket has an integrally formed structure. The backlight module according to claim 13, characterized in that.

15. The bracket is made of an aluminum alloy material. The backlight module according to claim 14, characterized in that.

16. The branch is of a hollow structure, and the interiors of the branches of the skeleton part communicate with each other. The backlight module according to claim 4, characterized in that.

17. A bracket, wherein the bracket is provided with a plurality of lamp plate mounting grooves, the lamp plate mounting grooves are through grooves that penetrate the bracket, the bracket includes a frame part and a skeleton part, the skeleton part is composed of a plurality of branches intersecting vertically and horizontally, the frame part is installed surrounding the skeleton part, heat dissipation ports are provided at positions corresponding to the lamp plate mounting grooves on four sides of the frame part, each branch is provided with an air duct, the air duct penetrates the branch on both sides of the lamp plate mounting groove, and the heat dissipation port, the air duct and the cavity form a heat dissipation passage, and the bracket; A plurality of lamp plates, which are installed in one-to-one correspondence with the lamp plate mounting grooves and are fixed in the lamp plate mounting grooves, the lamp plate includes a top plate, a support member and a bottom plate, the support member is located between the top plate and the bottom plate and is connected to the top plate and the bottom plate, and a plurality of lamp plates that form the cavity between the top plate and the bottom plate; A plurality of lamp beads, which are installed on the top plate and the lead pins of the lamp beads extend through the top plate into the cavity. Here, the bracket and the lamp plate form a support structure of the backlight module. The backlight module, characterized in that.

18. Including a display panel and a backlight module, the backlight module provides backlight for the display panel, and the backlight module A bracket, which is provided with at least one lamp plate mounting groove, and heat dissipation ports are provided on at least both sides corresponding to the lamp plate mounting groove, and the heat dissipation ports penetrate the side wall of the bracket. At least one lamp plate, which is installed in one-to-one correspondence with the lamp plate mounting groove, fixed in the lamp plate mounting groove, has its interior hollowed out to form a cavity, and the cavity communicates with the heat dissipation port in the bracket. At least one lamp plate, A plurality of lamp beads, which are installed on the lamp plate and the lead pins of the lamp beads extend into the cavity. A plurality of lamp beads, wherein the bracket and the lamp plate form a support structure for the backlight module, A display device characterized by the above.

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