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 an application number of 2022110115434 and an application title of "Backlight Module and Display Device", and all its contents are incorporated herein by reference.

[0002] The present invention relates to the field of display technology, and 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 many 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 rival that of OLEDs (Organic Light Emitting Diode displays), bringing excellent viewing experiences to consumers and providing more diverse display consumption choices in 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, which is likely 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 from the lead pins of the LEDs, 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] The objective of this application is to provide a backlight module and a display device that reduce the power consumption of the backlight module and improve the service life of the backlight module.

[0006] This application discloses a backlight module comprising a bracket, at least one lamp plate, and a plurality of lamp beads, wherein the bracket is provided with at least one lamp plate mounting groove, and heat dissipation vents are provided on at least both sides of the bracket corresponding to the lamp plate mounting groove, the heat dissipation vents penetrate the side wall of the bracket, the lamp plate is installed in one-to-one correspondence with the lamp plate mounting groove and is fixed within 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 vents in the bracket, the lamp beads are installed on the lamp plate and the lead pins of the lamp beads extend into the cavity, wherein the bracket and the lamp plate form a support structure for the backlight module.

[0007] This application discloses a backlight module comprising a bracket, a plurality of lamp plates, and a plurality of lamp beads, wherein the bracket is provided with a plurality of lamp plate mounting grooves, the lamp plate mounting grooves are through grooves and penetrate the bracket, the bracket comprises a frame portion and a skeletal portion, the skeletal portion consists of a plurality of vertically and horizontally intersecting branches, the frame portion is installed surrounding the skeletal portion, the four sides of the frame portion are provided with heat dissipation vents corresponding to the positions of the lamp plate mounting grooves, each of the branches is provided with an air duct, and the air ducts connect the branches to the lamp plates The mounting groove penetrates both sides, and the heat dissipation opening, air duct, and cavity form a heat dissipation passage. The lamp plate is installed in a one-to-one correspondence with the lamp plate mounting groove and is fixed within the lamp plate mounting groove. 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 the 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 for the backlight module.

[0008] The present invention further discloses a display device comprising a display panel and a backlight module, the backlight module providing backlight to the display panel, the backlight module comprising a bracket, at least one lamp plate and a plurality of lamp beads, the bracket being provided with at least one lamp plate mounting groove, heat dissipation vents provided on at least both sides of the bracket corresponding to the lamp plate mounting groove, the heat dissipation vents penetrating the side wall of the bracket, the lamp plate being installed in one-to-one correspondence with the lamp plate mounting groove and fixed within the lamp plate mounting groove, the inside of the lamp plate being hollowed out to form a cavity, the cavity communicating with the heat dissipation vents in the bracket, the lamp beads being installed on the lamp plate and the lead pins of the lamp beads extending into the cavity, wherein the bracket and the lamp plate form a support structure for the backlight module.

[0009] Conventional backlight modules are designed with a lamp plate placed on a back plate, and heat is dissipated from the lamp plate using the back plate. In contrast, the present invention omits the back plate structure in the backlight module and adds a bracket structure for fixing the lamp plate. The lamp plate and bracket are combined to form the support structure of the backlight module, and by providing heat dissipation vents on different sides of the bracket, a hollow structure is formed within the lamp plate, creating a cavity. By connecting this cavity with these heat dissipation vents, an airflow passage is formed that communicates with the outside. This allows external airflow to enter through one heat dissipation vent, pass through the cavity, and exit through the other heat dissipation vent, achieving the effect of airflow circulation. As a result, the cold external air can directly remove heat from the lamp plate and the heat extending to the lead pins in the cavity, effectively dissipating heat from the lead pins of the lamp beads, reducing the power consumption of the backlight module, and improving the lifespan of the backlight module. [Brief explanation of the drawing]

[0010] The accompanying drawings are used to provide a further understanding of the embodiments of the present application, constitute part of the specification, illustrate embodiments of the present application, and explain the principles of the present application together with the textual description. As will be apparent, the drawings in the following description are only a few embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. [Figure 1] This is a schematic diagram of a backlight module according to an embodiment of the present invention. [Figure 2] This is a schematic diagram of a bracket according to an embodiment of the present invention. [Figure 3] This is a cross-sectional view of a bracket in the horizontal direction according to an embodiment of the present application. [Figure 4] This is a schematic diagram of a lamp plate according to an embodiment of the present invention. [Figure 5] This is a cross-sectional view in the vertical direction of a backlight module according to an embodiment of the present application. [Figure 6] This is a horizontal cross-sectional view of a backlight module according to an embodiment of the present application. [Figure 7] This is a schematic diagram of a display device according to an embodiment of the present invention. [Modes for carrying out the invention]

[0011] It should be understood that the terminology used herein, and the specific structural and functional details disclosed, are representative and merely illustrative of specific embodiments. However, this application may be specifically implemented in many alternative forms and should not be limited to the embodiments described herein.

[0012] In the description of this application, the terms "first" and "second" are used merely to describe the purpose and should not be understood as indicating relative importance or implicitly indicating the number of indicated technical features. Furthermore, terms indicating direction or positional relationships such as "center," "lateral," "up," "down," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," and "outside" are described based on the direction or relative positional relationships shown in the drawings and are solely for the purpose of facilitating the simplified explanation of this application. They do not indicate that the indicated device or component has a specific direction or must be constructed and operated in a specific direction, and should not be understood as limiting this application.

[0013] The present application will be described in detail below with reference to the drawings and optional embodiments.

[0014] As shown in Figures 1, 2, and 4, an embodiment of the present invention discloses a backlight module 20 designed using a direct-lit backlight, the backlight module 20 comprising a bracket 100, a lamp plate 200, lamp beads 300 and other structures, the bracket 100 being provided with a lamp plate mounting groove 110 for fixing the lamp plate 200, and at least two sides of the bracket 100 corresponding to the lamp plate mounting groove 110 being provided with heat dissipation vents 120, that is, at least two sides of the bracket 100 being provided with heat dissipation vents 120, which may be two sides, three sides, or four sides, and the heat dissipation vents 120 penetrate the side wall of the bracket 100.

[0015] A cavity 210 is formed by hollowing out the inside of the lamp plate 200, and the cavity 210 communicates with at least two heat dissipation vents 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. Thus, the bracket 100 and the lamp plate 200 form a support structure for the backlight module 20.

[0016] In contrast to conventional designs where a lamp plate 200 is placed on a backplate of a backlight module 20 and heat is dissipated from the lamp plate 200 using the backplate, this invention omits the backplate structure of the backlight module 20 and adds a bracket 100 structure for fixing the lamp plate 200. The lamp plate 200 and the bracket 100 are combined to form the support structure of the backlight module 20, i.e., the back structure of the backlight module 20, and by providing heat dissipation vents 120 on different sides of the bracket 100, a hollow structure is formed within the lamp plate 200. By forming a cavity 210 and connecting the cavity 210 with these heat dissipation ports 120 to form an airflow passage that communicates with the outside, external airflow can be allowed to enter through one heat dissipation port 120 and exit through the other heat dissipation port 120 via the cavity 210, thereby achieving the effect of circulating airflow. This allows the cold external air to directly remove heat from the lamp plate 200 and the heat extending to the lead pins 310 in the cavity 210, effectively dissipating heat from the lead pins 310 of the lamp beads 300, thereby reducing the power consumption of the backlight module 20 and improving the lifespan of the backlight module 20.

[0017] In the embodiment of the present invention, 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 communicates directly with all the heat dissipation vents 120 in the bracket 100, forming an airflow passage. The number of lamp plates 200 in the backlight module 20 may be multiple, where multiple means two or more. The bracket 100 also has multiple lamp plate mounting grooves 110, and the lamp plates 200 are mounted one-to-one within the lamp plate mounting grooves 110. In this case, the cavities 210 in each lamp plate 200 communicate with each other, forming an airflow passage with the heat dissipation vents 120 in the bracket 100. In this embodiment, the backlight module 20 is described as having eight lamp plates 200 as an example, but this does not mean that it is preferable for this embodiment to employ a backlight module 20 having eight lamp plates 200.

[0018] Each lamp plate 200 is provided with multiple lamp beads 300. These lamp beads 300 may be general LED lamp beads 300 or Mini LED lamp beads 300; they are not limited to these types.

[0019] As shown in Figure 2, in the bracket 100, the lamp plate mounting groove 110 is a through groove that penetrates the bracket 100, and in this case the bracket 100 has a grid structure, specifically the bracket 100 includes a frame portion 130 and a skeletal portion 140, the skeletal portion 140 consists of a plurality of vertically and horizontally intersecting branches 141, the frame portion 130 has a rectangular annular structure and is installed surrounding the skeletal portion 140, the heat dissipation openings 120 are provided on at least both sides of the frame portion 130 at positions corresponding to the lamp plate mounting groove 110, each of the branches 141 is provided with an air duct 142, the air duct 142 penetrates the branches 141 on both sides of the lamp plate mounting groove 110, and the heat dissipation openings 120, air ducts 142 and cavities 210 form a heat dissipation passage.

[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 the bracket 100. Even if designed in this way, it does not affect the air flow in the heat dissipation passage. 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 inside 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 inside 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 openings 120 are arranged on the four outer sides of the frame part 130. Each heat dissipation opening 120 on each side is arranged corresponding to the lamp plate 200. The heat dissipation openings 120 are arranged on the side of the frame part 130 away from the skeleton part 140, and the heat dissipation openings 120 have a porous structure arranged in an array, preventing foreign dust from the outside from entering the inside 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 inside of the frame part 130, the depth of the heat dissipation opening 120 is small, and the external air can more quickly fill and 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 truncated cone, and 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 reducing 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 through passage in the lamp plate 200 that penetrates front and back. 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 Figures 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. Furthermore, the lamp plate 200 employs an integrated design, that is, the top plate 220, support member 230, and bottom plate 240 are integrally molded, thereby facilitating the processing of the lamp plate 200 and improving its stability.

[0027] The support member 230 includes four corner support columns 231 and one central support column 232. The four corner support columns 231 each correspond to the four corners of the lamp plate 200, connecting the four corners of the top plate 220 to the four corners of the bottom plate 240, respectively. The central support column 232 is located in the center of the lamp plate 200, connecting the center of the top plate 220 to the center of the bottom plate 240. The bottom plate 240 and top plate 220 of each lamp plate 200 are supported and fixed at five points, and when the internal space of the lamp plate 200 is secured, bending of the top plate 220 and bottom plate 240 due to force is also avoided.

[0028] Furthermore, the horizontal cross-section of the corner support column 231 may be rectangular, and 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 will contact the four corners of the lamp plate mounting groove 110, positioning the lamp plate 200 and facilitating its installation. The cross-section of the central support column 232 may be rectangular, circular, or any other shape.

[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, and the lamp plate 200 and bracket 100 function as the back of the backlight module 20, so the neat structure improves the aesthetic appearance of the backlight module 20. After the bottom of the lamp plate 200 and the bottom of the bracket 100 are flush, sealant can be further filled into the gap between the bottom plate 240 and the bracket 100, thereby improving the waterproof effect on the back of the backlight module 20 and the stability between the lamp plate 200 and the bracket 100.

[0030] As shown in Figure 6, after the lamp plate 200 is inserted into the lamp plate mounting groove 110, the bracket 100 and the lamp plate 200 form multiple heat dissipation passages, and the direction of the arrows in the figure indicates the direction of airflow. After the air in the cavity of the lamp plate 200 undergoes thermal expansion, air flows between the inside and outside of the lamp plate 200.

[0031] The width of the cavity 210 is the distance between two adjacent corner support columns 231 on one of the lamp plates 200. In this case, the width of the air duct 142 is greater than or equal to the width of the cavity 210, and the width of the cutout 131 in the frame portion 130 is also greater than or equal to the width of the cavity 210. This ensures that the bracket 100 itself does not obstruct the airflow. Selectively, the cross-sectional shapes of the air duct 142, the cavity 210, and the cutout 131 are the same, and the three form a stable airflow passage, allowing air to flow smoothly and helping to achieve stable heat dissipation.

[0032] In the embodiment of the present invention, the lamp plates 200 may be fixed individually within the lamp plate mounting groove 110 of the bracket 100, specifically by methods such as adhesive bonding, snap-fitting, or insertion, or by a method of fixing them all at once. First, one or more lamp plates 200 are fixed, and finally they are inserted into the lamp plate mounting groove 110 of the bracket 100. Specifically, the backlight module 20 further includes a cover plate 250, the top plates 220 of the multiple lamp plates 200 are fixed in an array to the cover plate 250, the lamp beads 300 are fixed to the cover plate 250, and the lead pins 310 of the lamp beads 300 penetrate the cover plate 250 and the top plates 220 and extend into the cavity 210, and the bottom edge of the cover plate 250 abuts against the top of the frame portion 130 and is adhesively fixed to the frame portion 130. Alternatively, if the backlight module 20 is provided with only one lamp plate 200, the lamp plate 200 can be attached to the bracket 100 by fixing this single lamp plate 200 to the cover plate 250 and then bonding the bottom edge of the cover plate 250 to the top of the frame portion 130.

[0033] After adopting the above fixing method, the complex process of aligning and attaching the lamp plates 200 one-to-one is avoided, and the mounting and fixing of all lamp plates 200 can be completed by directly fixing the cover plate 250 to the bracket 100, making it simple and convenient, and the design of the cover plate 250 avoids the risk of the lamp plates 200 falling off the bracket 100. 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 towards the lamp beads 300 through the gap between the lamp plate 200 and the bracket 100, the risk of the lamp beads 300 overheating can be avoided.

[0034] In this case, the lamp plate 200 and the lid plate 250 may be integrally molded, and during assembly, only the lamp beads 300 need to be attached to the lid plate 250 one by one. Of course, the lamp plate 200 may also be a separate structure, and during assembly, only the lamp plate 200 needs to be attached to the lid plate 250. In this way, the number of lamp plates 200 can be selected according to the actual situation, and a wider range of usage scenarios can be accommodated.

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

[0036] The foregoing is a further detailed description of the present application with reference to specific embodiments, and it cannot be concluded that the specific implementation of the present application is not limited to these descriptions. A person skilled in the art to which the present application belongs can make several simple derivations or substitutions based on the concepts of the present application without departing from the present concept, and all of these should be considered to fall within the scope of protection of the present application.

Claims

1. A backlight module, A bracket, provided with at least one lamp plate mounting groove, with heat dissipation vents provided on at least both sides of the bracket corresponding to the lamp plate mounting groove, the heat dissipation vents penetrating the side wall of the bracket and the bracket, At least one lamp plate, which is installed in a one-to-one correspondence with the lamp plate mounting groove, fixed within the lamp plate mounting groove, and has a cavity formed by hollowing out the inside of the lamp plate, the cavity communicating with the heat dissipation vent of the bracket, A plurality of lamp beads, which are installed on the lamp plate and whose lead pins extend into the cavity, Here, the bracket and the lamp plate form a support structure for the backlight module. A backlight module characterized by the following features.

2. 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 backlight module according to feature 1.

3. The bracket is provided with a plurality of lamp plate mounting grooves, and the lamp plate mounting grooves are blind grooves, and the lamp plate mounting grooves do not penetrate the bracket. The backlight module according to feature 1.

4. The bracket includes a frame portion and a skeletal portion, the skeletal portion consists of a plurality of vertically and horizontally intersecting branches, the frame portion is installed surrounding the skeletal portion, at least both sides of the frame portion are provided with heat dissipation openings corresponding to the positions of the lamp plate mounting grooves, each branch is provided with an air duct, the air ducts penetrate the branches on both sides of the lamp plate mounting grooves, and the heat dissipation openings, air ducts, and cavities form a heat dissipation passage. The backlight module according to feature 2.

5. The heat dissipation vents are provided on four sides of the frame portion, and the heat dissipation vents are installed on one side of the frame portion that is away from the skeletal portion, and the heat dissipation vents are arranged in an array-like porous structure. A hollowed-out section is formed on one side of the frame portion facing the skeletal portion, and the hollowed-out section corresponds to one side of the cavity. The backlight module according to feature 4.

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 feature 5.

7. The cross-sectional area of ​​the heat dissipation vent facing the lamp plate is larger than the cross-sectional area of ​​the heat dissipation vent away from the lamp plate. The backlight module according to feature 5.

8. The lamp plate includes a top plate, a support member, and a bottom plate, the support member being located between the top plate and the bottom plate and connected to the top plate and the bottom plate, forming the cavity between the top plate and the bottom plate, and the lead pins of the lamp beads extending through the top plate into the cavity. The backlight module according to feature 4.

9. The bottom of the base plate and the bottom of the bracket are flush, and sealant is filled into the gap between the base plate and the bracket. The backlight module according to feature 8.

10. The top plate, support member and bottom plate are integrally molded. The backlight module according to feature 8.

11. The support member includes four corner support columns and one central support column, the four corner support columns each correspond to the four corners of the lamp plate and connect the four corners of the top plate and the four corners of the bottom plate, the central support column is located in 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 of one of the lamp plates, and the width of the air duct is greater than or equal to the width of the cavity. The backlight module according to feature 8.

12. The horizontal cross-section of the aforementioned corner support column is rectangular. The backlight module according to feature 11.

13. The backlight module further includes a cover plate, the top plates of a plurality of 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 plates into the cavity. The bottom edge of the cover plate abuts against the top of the frame and is fixed to the frame by adhesive. The backlight module according to feature 8.

14. The lamp plate and the cover plate are integrally molded, and the bracket is integrally molded. The backlight module according to feature 13.

15. The aforementioned bracket is made of an aluminum alloy material. The backlight module according to feature 14.

16. The aforementioned branches and trunks have a hollow structure, and the interiors of each branch and trunk within the skeletal structure are interconnected. The backlight module according to feature 4.

17. A backlight module, A bracket comprising a bracket having a plurality of lamp plate mounting grooves, the lamp plate mounting grooves being through grooves that penetrate the bracket, the bracket including a frame portion and a skeletal portion, the skeletal portion consisting of a plurality of vertically and horizontally intersecting branches, the frame portion being installed surrounding the skeletal portion, the four sides of the frame portion having heat dissipation openings corresponding to the positions of the lamp plate mounting grooves, each branch having an air duct, the air ducts penetrating the branches on both sides of the lamp plate mounting grooves, and the heat dissipation openings, air ducts, and cavities forming a heat dissipation passage, A plurality of lamp plates, each installed in a one-to-one correspondence with the lamp plate mounting groove and fixed within the lamp plate mounting groove, the lamp plate including a top plate, a support member and a bottom plate, the support member positioned between the top plate and the bottom plate and connected to the top plate and the bottom plate, and the plurality of lamp plates forming the cavity between the top plate and the bottom plate, The lamp bead comprises a plurality of lamp beads, which are installed on the top plate and whose lead pins penetrate the top plate and extend into the cavity, Here, the bracket and the lamp plate form a support structure for the backlight module. A backlight module characterized by the following features.

18. The system includes a display panel and a backlight module, the backlight module providing backlight to the display panel, and the backlight module A bracket having at least one lamp plate mounting groove, with heat dissipation vents provided on at least both sides corresponding to the lamp plate mounting groove, the heat dissipation vents penetrating the side wall of the bracket and the bracket, At least one lamp plate, which is installed in a one-to-one correspondence with the lamp plate mounting groove, fixed within the lamp plate mounting groove, and has a cavity formed by hollowing out the inside of the lamp plate, the cavity communicating with the heat dissipation vent of the bracket, A plurality of lamp beads, which are installed on the lamp plate and whose lead pins extend into the cavity, Here, the bracket and the lamp plate form a support structure for the backlight module. A display device characterized by the following features.

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