Light bar connecting structure and backlight module

Abstract

The invention relates to a light bar connecting structure and a backlight module, the connecting structure comprises a circuit board, an electrical interface and branch connecting parts, the circuit board is provided with a main part extending in the length direction, a plurality of branch parts extend on the main part at intervals in the length direction, and the end part of each branch part is provided with a first connecting part used for being electrically connected with a light bar of the backlight module; a second connecting part is arranged at the end of the main part and used for being electrically connected with a backlight driving board. According to the structure, the trunk part, the branch parts and the interfaces are integrated on the same flexible circuit board, so that concentrated connection of the light bar and the driving board is realized, and the use of independent flexible flat cables is reduced. According to the principle, electric energy and signal distribution is achieved through wiring of the flexible circuit board, and space transition is completed through bending of the board body. The technical effects are that connection complexity and material cost are reduced, potential faults are reduced, module space layout is optimized, light and thin design and assembly efficiency are improved, and long-term stability of a backlight system is improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a light strip connection structure and a backlight module. Background Technology

[0002] Currently, LCD TVs rely on backlight modules to provide the display light source. Among them, direct-lit LED backlighting, which arranges multiple LED strips behind the display panel or on the bottom back panel, has become the mainstream solution for large-screen TVs.

[0003] Since a single TV usually requires multiple LED strips to work together, the existing technology uses multiple independent flexible flat cables for electrical connection and signal transmission between the LED strips and the driving circuit. This results in the flexible flat cables taking up a lot of space, which is not conducive to the thin and light design of the display screen. Summary of the Invention

[0004] This application provides a light strip connection structure and a backlight module to at least partially solve the above-mentioned technical problems.

[0005] To achieve the above objectives, according to a first aspect of this application, a light strip connection structure is provided, comprising: The circuit board includes a main body and multiple branches connected to the main body, the multiple branches being spaced apart along the length direction of the main body; A first connecting portion is provided on the branch portion and is configured to be electrically connected to the light strip of the backlight module; The second connecting part is located at the end of the main body and is configured to be electrically connected to the backlight driver board of the backlight module.

[0006] Optionally, the circuit board is a flexible circuit board.

[0007] Optionally, the main body includes a connecting fitting part and a bending part, a plurality of the branch parts are provided on the fitting part, and the second connecting part is provided at the end of the bending part away from the fitting part.

[0008] Optionally, the circuit board further includes an amplification section connected to the end of the bending section away from the bonding section, and the second connection section connected to the end of the amplification section away from the bending section; The width of the amplification section is greater than the width of the main stem.

[0009] Optionally, the shape formed by the branch and the main stem is T-shaped; or, the shape formed by the branch and the main stem is Y-shaped.

[0010] Optionally, all of the branches are located on the same side of the main trunk.

[0011] Optionally, the first connecting part is a 22-pin FPC gold finger; or, the second connecting part is a 26-pin FPC gold finger.

[0012] Optionally, it may also include a reinforcing plate, which is attached to the surface of the circuit board.

[0013] According to a second aspect of this application, a backlight module is provided, including the light strip connection structure described in the first aspect; It also includes a back panel and light strips, wherein a plurality of light strips are arranged at intervals on the back panel, and each light strip is electrically connected to a first connecting part.

[0014] Optionally, the light strip is provided with a socket, which is electrically connected to the first connecting part; And / or, the backlight module further includes a backlight driver board, which is disposed on the back plate and on the side facing away from the light strip. The back plate has a through hole, and the circuit board passes through the through hole in a bent state and is electrically connected to the backlight driver board through a second connecting part.

[0015] In the LED strip connection structure of this application embodiment, a main stem and multiple branches spaced apart along its length are arranged on the same circuit board. A first connection portion is provided on each branch, and a second connection portion is provided at the end of the main stem. This structurally integrates the originally dispersed LED strip connection lines, concentrating the electrical connection path between the LED strip and the backlight driver board onto a single carrier. This structure reduces the number of independent flexible cables and intermediate connection nodes within the backlight module, lowers the complexity of insertion during assembly, and reduces the risk of contact instability caused by multiple connections. Simultaneously, the main stem performs centralized wiring, while the branches provide branch connections corresponding to the LED strip positions. The overall wiring is more organized and compact, reducing the space occupied by the connection structure within the module and contributing positively to the thinner and lighter design of the display device. Furthermore, the integrated circuit board structure facilitates overall positioning and installation, making it suitable for use with automated assembly processes. It offers advantages in production consistency, maintenance convenience, and compatibility with backlight modules of different sizes.

[0016] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0018] Figure 1 This is a schematic diagram showing the connection relationship between the circuit board and the light strip provided in the embodiments of this application; Figure 2 This is a schematic diagram of the circuit board structure provided in the embodiments of this application; Figure 3 This is a schematic diagram of the circuit board in a bent state provided in the embodiments of this application; Figure 4 This is a cross-sectional view of the circuit board provided in the embodiments of this application; Figure 5 This is a schematic diagram of the backlight module provided in the embodiments of this application; Figure 6 yes Figure 5 Enlarged view of part A in the image.

[0019] Explanation of reference numerals in the attached figures: 1. Circuit board; 11. Main section; 111. Bonding section; 112. Bending section; 12. Branch section; 13. Amplification section; 2. First connecting part; 3. Second connecting part; 4. Reinforcing plate; 5. Back panel; 51. Perforation; 6. LED strip; 61. Socket; 7. Backlight driver board. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0021] Firstly, this application provides a light strip connection structure, please refer to... Figure 1 and Figure 2 The light strip connection structure includes a circuit board 1, a first connecting part 2, and a second connecting part 3.

[0022] For example, the circuit board 1 is a flexible circuit board 1, which extends in a strip shape as a whole.

[0023] For example, the circuit board 1 includes a main stem 11 and a plurality of branches 12 connected to the main stem 11. Specifically, the main body of the circuit board 1 constitutes the main stem 11, which extends along the arrangement direction of the backlight module and is used to carry the power supply lines and control signal lines from the backlight driver board 7. At the same time, a plurality of branches 12 are formed at intervals along the length direction on one or both sides of the main stem 11. Each branch 12 is integrally formed with the main stem 11, and each branch 12 extends laterally or obliquely relative to the main stem 11, thereby spatially corresponding to the plurality of lamp strips 6 arranged in an array in the backlight module.

[0024] For example, the first connecting part 2 is provided on the branch 12. Specifically, the first connecting part 2 is integrated into the end region of the branch 12, and the first connecting part 2 is used to make an electrical connection with the electrode terminal on the corresponding light strip 6.

[0025] It is understood that the first connecting part 2 can be a pad structure, a plug structure or a crimp structure, and its shape is adapted according to the interface form of the light strip 6. Through the direct electrical connection between the first connecting part 2 and the light strip 6, each branch 12 can provide power or control signals to the corresponding light strip 6 respectively.

[0026] For example, the second connection part 3 is provided at the end of the main stem 11. Specifically, the second connection part 3 is provided at the end region of the main stem 11. The second connection part 3 is connected to the internal circuit of the main stem 11 and is configured to be electrically connected to the output interface of the backlight driver board 7, thereby forming a centralized signal and power input path between the main stem 11 and the backlight driver board 7.

[0027] It is understandable that by setting multiple branch sections 12 and main trunk 11 on the same flexible circuit board 1, the multiple independent flexible flat cables that were originally scattered among the light strips 6 are integrated into an integrated board structure. The main trunk 11 undertakes the centralized wiring function, and the branch sections 12 undertake the branch connection function. The power supply and control paths of each light strip 6 are distributed on the same carrier, which is beneficial to reducing the number and layers of connection paths of the light strip 6.

[0028] In this structure, the flexible circuit board 1 has a certain bending capability, the main body 11 can be attached and laid out along the contour of the back plate 5, and the branches 12 can be led out to the corresponding light strip 6 positions in a small space. Structurally, this helps to reduce the space occupied by the connection structure inside the backlight module and has a positive effect on the thinner and lighter layout of the display module.

[0029] Meanwhile, since the first connecting part 2 is directly set on the branch part 12, there is no need to set an independent flexible cable or intermediate connector between the light strip 6 and the circuit board 1. The electrical connection path is relatively shortened and the number of connection interfaces is relatively reduced. This is beneficial to reduce the risk of abnormal contact caused by repeated plugging or vibration during long-term use or assembly.

[0030] During the production and assembly process, the light strip connection structure can be positioned and installed as a whole. After the main body 11 is connected to the backlight driver board 7 in one go, each branch 12 is electrically connected to the corresponding light strip 6 in sequence. This helps to simplify the assembly process and reduce the assembly complexity. At the same time, the integrated structure can be adjusted in size according to the number and spacing of the light strips 6 to adapt to the application requirements of backlight modules of different specifications. To a certain extent, this helps to improve the flexibility and consistency of the module structure design.

[0031] In some implementations, combined with Figure 2 , Figure 3 The main body 11 is divided along its overall length into interconnected bonding sub-parts 111 and bending sub-parts 112. The bonding sub-parts 111 serve as the main body area of ​​the main body 11 and are used to be attached to the back plate 5 or the surface of the structural component of the backlight module. Multiple branches 12 are spaced along the length of the bonding sub-parts 111 and extend integrally with the bonding sub-parts 111. Each branch 12 corresponds to a different light strip 6 in spatial position, thus forming the basic structure for centralized power supply and branch connection.

[0032] For example, the bending portion 112 is located at one end of the bonding portion 111 and is connected to the bonding portion 111 through the continuous material structure of the flexible circuit board 1. The bending portion 112 has a bendable characteristic relative to the bonding portion 111. This bendable characteristic comes from the length reserved in this area of ​​the flexible circuit board 1, the routing direction or the local structural design, so that the bending portion 112 can change the angle relative to the bonding portion 111 in the installed state.

[0033] For example, the second connecting part 3 is located at one end of the bent part 112 away from the fitting part 111, and the second connecting part 3 maintains an electrical connection with the fitting part 111 and each branch part 12 through the internal wiring of the main body 11.

[0034] It is understandable that when the bonding part 111 is arranged along the internal plane of the backlight module, the bending part 112 can be led out in a vertical or inclined direction, so that the second connecting part 3 is arranged toward the interface position of the backlight driving board 7, forming a combination relationship of planar wiring and three-dimensional lead-out from the structural path.

[0035] By distinguishing between the fitting sub-part 111 and the bending sub-part 112, the main body 11 maintains a fitted arrangement in the area near the light strip 6 and has the ability to adjust its direction in the area near the backlight driver board 7. This is beneficial for completing the interface docking at different heights or in different directions without adding extra connecting lines, thereby reducing the mutual restrictions between the backlight driver board 7 and the light strip connection structure in terms of spatial layout.

[0036] It is worth noting that during the assembly process, the mating part 111 can be fixed and positioned first, and the bending part 112 is then bent and adjusted according to the installation position of the backlight driving board 7. The second connecting part 3 is electrically connected to the backlight driving board 7. This structural relationship is beneficial to reducing installation interference and improving assembly adaptability to a certain extent. It also helps to carry out reasonable wiring under the condition of limited backlight module thickness, which is of positive significance to the overall compact design of the backlight module.

[0037] For example, the bending direction of the bent portion 112 and the protrusion direction of the branch portion 12 relative to the main body 11 are in a matching relationship. The branch portion 12 protrudes towards the light strip 6 along the plane of the back plate 5, while the bent portion 112 is spatially turned towards the through hole 51 of the back plate 5. This orientation is conducive to the circuit board 1 forming a natural transition path when passing through the through hole 51 and connecting to the backlight driver board 7, reducing unnecessary twisting.

[0038] Furthermore, the bending sub-part 112 is designed with sufficient length allowance. This length range can increase the spatial distance between the second connecting part 3 and the branch part 12 near the bending sub-part 112 after the circuit board 1 is bent. When the second connecting part 3 is inserted, each branch part 12 maintains a relatively stable state, which is beneficial to reducing the possibility of mutual interference from the perspective of structural layout.

[0039] In some implementations, combined with Figures 1 to 3 The circuit board 1 also includes an amplification section 13, which is connected to the end of the bending section 112 away from the bonding section 111, and the second connection section 3 is connected to the end of the amplification section 13 away from the bending section 112.

[0040] For example, the expansion portion 13 and the bending portion 112 are continuously disposed on the material and form an integral structure.

[0041] For example, the expansion section 13 and the bending section 112 are connected by adhesive.

[0042] For example, the second connecting part 3 is disposed at the end of the expansion part 13 away from the bending part 112, thereby forming a progressively transitional connection path between the main body 11, the bending part 112 and the second connecting part 3.

[0043] In some embodiments, the width of the amplification section 13 is greater than the width of the main stem 11, and this width difference causes the amplification section 13 to form an extended region relative to the main stem 11 in the lateral dimension.

[0044] It is understandable that the extended area not only provides more wiring and soldering space for the second connection part 3, but also facilitates the arrangement of more spacious wires or pad structures inside the expansion part 13. From the perspective of circuit structure, it is beneficial to reduce line impedance and improve the transmission conditions of current or signals, which to a certain extent helps the electrical connection stability between the second connection part 3 and the backlight driver board 7.

[0045] Meanwhile, since the amplification section 13 is located at the end of the bending section 112 and its width is significantly greater than that of the main section 11, during actual installation and docking, the operator can use their fingers to pinch the area formed by the expansion of the amplification section 13 to pick up, position, or bend the entire circuit board 1. The operating force is mainly applied to the amplification section 13 rather than the main section 11 body area, which reduces the local stress concentration of the main section 11 during the bending process from the force path, and has a positive significance for the protection of the internal circuits of the main section 11.

[0046] Furthermore, when local structural damage occurs due to improper operation during installation, the expansion section 13, as a functional extension area located at the end, involves a relatively small range of materials and structures for replacement or scrapping. Compared to the overall damage to the main body 11, the maintenance cost is at a lower level, which is beneficial to controlling the overall cost input during the assembly stage.

[0047] Furthermore, during assembly, the operator performs the operation by pinching the expansion unit 13, creating a spatial isolation between the main body area of ​​the main stem 11 and the operator's fingers. This isolation helps reduce the adhesion of contaminants such as oil and sweat to the surface of the main stem 11, positively impacting electrical reliability during long-term use. With the expansion unit 13 being wider than the main stem 11, it works synergistically in electrical connections, mechanical operation, and assembly maintenance, allowing the circuit board 1 to meet compact wiring requirements while also ensuring ease of installation and reliable operation.

[0048] In some implementations, to distinguish between the physical structural relationship and the electrical connection relationship of the circuit board 1, the main body 11 and the branch 12 in the light strip connection structure are set as an integrally formed carrier of the flexible circuit board 1 at the structural level, while at the electrical level they respectively carry independently defined conductive paths.

[0049] For example, a first conductive line is provided inside the branch 12, and a second conductive line is provided inside the main branch 11. The first conductive line and the second conductive line are electrically connected inside the circuit board 1 through continuous wiring, thereby forming a power supply or signal transmission path extending from the main branch 11 to each branch 12.

[0050] For example, to meet the insertion requirements of the light strip 6 and the backlight driver board 7, the first connecting part 2 has a first gold finger. The first gold finger is arranged in the end area of ​​the branch part 12 and forms an electrical connection with the first conductive line. The first gold finger serves as the electrical interface between the circuit board 1 and the light strip 6, and its structure facilitates insertion or contact with the terminals of the light strip 6. Further, the second connecting part 3 has a second gold finger. The second gold finger is located in the end area of ​​the main body 11 or its extension structure and forms an electrical connection with the second conductive line. The second gold finger is used to complete electrical docking with the corresponding interface on the backlight driver board 7.

[0051] It can be understood that in this structural relationship, the first conductive line and the second conductive line, as carriers of electrical signals or electrical energy, are covered by an insulating layer and together with the flexible substrate of the circuit board 1, form a stable stacked structure. The first gold finger and the second gold finger are exposed to form conductive contact areas by removing the local insulating layer, thereby clearly distinguishing the conductive functional area from the non-conductive functional area while maintaining the continuity and integrity of the physical structure.

[0052] By defining the hierarchical relationship between conductive lines, gold fingers, and flexible substrate, circuit board 1 achieves a clear division of labor between structural and electrical design. This helps reduce misunderstandings during design, manufacturing, and assembly. It also allows for targeted optimization of the conductive lines or gold finger layout when the number of LED strips 6 changes or the driver board interface is adjusted, without requiring significant modifications to the overall physical structure. This has a positive impact on the adaptability and design flexibility of the backlight module.

[0053] For example, the first connecting part 2 uses 22-pin FPC gold fingers, and the second connecting part 3 uses 26-pin FPC gold fingers. The 22-pin FPC gold fingers are located at the end area of ​​the branch 12 and form an electrical connection with the first conductive line. This pin configuration can meet the interface requirements of a single light strip 6 in terms of power supply and control signals, balancing connection function and wiring density under the condition of limited structural size. The 26-pin FPC gold fingers are located at the end of the main stem 11 or its extension and form an electrical connection with the second conductive line. This relatively increased pin number is beneficial for centrally carrying multiple power and control signals from the backlight driver board 7 and distributing them to each branch 12 through the main stem 11. By using FPC gold fingers with different pin counts for the first connecting part 2 and the second connecting part 3, the interface on the light strip 6 side and the interface on the driver board side are clearly distinguished in terms of electrical specifications and physical dimensions. This helps to reduce the risk of mis-insertion during assembly and also facilitates customization according to the actual circuit requirements of the backlight module.

[0054] For example, the branch 12 reserves a non-gold finger portion between the main branch 11 and the first connecting portion 2. This non-gold finger portion serves as a structural transition area, and its length is designed to match the installation spacing of the light strip 6 on the back plate 5 and the position of the socket 61. When the length of the non-gold finger portion is within a reasonable range, it is beneficial to reserve the necessary operating space for the operator when inserting the first connecting portion 2, and to avoid the fingers or tools directly acting on the gold finger area, thereby reducing the potential risk of damage to the gold finger surface during the insertion process.

[0055] In some embodiments, the branch 12 and the main trunk 11 form a T-shape.

[0056] It is understood that the extension form of the branch 12 relative to the main stem 11 is not limited to a single right-angle connection structure. The branch 12 and the main stem 11 can form a T-shaped structure under planar projection. The main stem 11 serves as the main line carrier extending longitudinally, and the branch 12 extends laterally from one or both sides of the main stem 11. Each branch 12 is arranged at intervals with the main stem 11 in the length direction. This structural form facilitates the regular array arrangement of the branch 12 corresponding to the light strip 6 inside the backlight module, which is beneficial to the overall wiring regularity and space utilization.

[0057] In other embodiments, the branch 12 and the main stem 11 form a Y-shape. It can be understood that the branch 12 extends from the main stem 11 at an inclined angle, with the transition area exhibiting a diagonally forked state. Compared to a T-shaped structure with a right-angle transition, the Y-shaped structure provides a certain buffering effect in terms of bending or stress distribution. When the flexible circuit board 1 undergoes local bending, it helps to reduce the stress concentration at the root of the branch 12. By introducing both T-shaped and Y-shaped connection forms, the structural relationship between the branch 12 and the main stem 11 offers diverse design possibilities. It allows for flexible selection based on the arrangement of the light strips 6, the internal space conditions of the module, and the wiring direction. While satisfying the electrical connection and structural extension functions, this has a positive impact on the overall layout adaptability of the backlight module.

[0058] In some implementations, combined with Figure 4 The light strip connection structure also includes a reinforcing plate 4, which is attached to at least a portion of the board surface of the circuit board 1.

[0059] For example, the reinforcing plate 4 and the circuit board 1 are bonded together to form a stable overlapping relationship. The position of the reinforcing plate 4 is selected according to the stress characteristics of the circuit board 1 during actual use. For example, it is arranged on the back of the gold finger area corresponding to the first connecting part 2 or the second connecting part 3, as well as in key areas such as the main body 11 and the bending part 112 where repeated insertion or bending is required.

[0060] For example, the reinforcing plate 4 can be made of PI material, which has a greater thickness and rigidity than the flexible circuit board 1 body. When the reinforcing plate 4 is attached to the surface of the circuit board 1, the bending resistance and support capacity of the local area are enhanced. When inserting gold fingers or adjusting the angle of the circuit board 1, it helps to disperse external forces and reduce the local deformation of the flexible substrate, thereby reducing the risk of damage to the conductive lines or gold finger area due to mechanical stress concentration. By setting the reinforcing plate 4 in the area requiring mechanical support, the circuit board 1 maintains overall flexibility while possessing local rigid support characteristics, which has a positive significance for the stability of the connection structure during assembly and use.

[0061] Secondly, combining Figures 1 to 6 This application also provides a backlight module, including a light strip connection structure in the first aspect.

[0062] For example, the backlight module also includes a back plate 5 and light strips 6. Multiple light strips 6 are spaced apart on the back plate 5, and each light strip 6 is electrically connected to a first connecting part 2.

[0063] In some implementations, combined with Figure 5 and Figure 6 The light strip 6 is equipped with a socket 61, which is electrically connected to the first connecting part 2.

[0064] In some embodiments, the backlight module further includes a backlight driver board 7, which is disposed on the back plate 5 and faces away from the side of the light strip 6. The back plate 5 has a through hole 51. The circuit board 1, in a bent state, passes through the through hole 51 and is electrically connected to the backlight driver board 7 via the second connecting part 3. It can be understood that the circuit board 1 completes the cross-surface connection between the light strip 6 side and the driver side through bending. The back plate 5 itself exists as a structural isolation component. The light strip 6 side and the driver board side are distributed on opposite sides of the back plate 5, which is beneficial for the partitioning of the internal space of the backlight module. At the same time, the through hole 51 provides a clear transition channel for the circuit board 1, guiding the direction of the circuit board 1 and helping to reduce the disordered stress in the bending area to a certain extent. Through the insertion method of the light strip 6 socket 61 and the first connecting part 2, combined with the cross-surface connection method of the back plate 5 through hole 51 and the second connecting part 3, the light strip connection structure forms a clear electrical connection path inside the backlight module, which is of positive significance for the overall assembly consistency and structural compactness of the backlight module.

[0065] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0066] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0067] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0068] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A light strip connection structure, characterized in that, include: The circuit board (1) includes a main body (11) and a plurality of branches (12) connected to the main body (11), the plurality of branches (12) being spaced apart along the length direction of the main body (11); The first connecting part (2) is provided on the branch part (12) and is configured to be electrically connected to the lamp strip (6) of the backlight module; The second connecting part (3) is provided at the end of the main body (11) and is configured to be electrically connected to the backlight driving board (7) of the backlight module.

2. The light strip connection structure according to claim 1, characterized in that, The circuit board (1) is a flexible circuit board (1).

3. The light strip connection structure according to claim 2, characterized in that, The main body (11) includes a connecting sub-part (111) and a bending sub-part (112) connected together. A plurality of the branch parts (12) are provided on the connecting sub-part (111), and the second connecting part (3) is provided at the end of the bending sub-part (112) away from the connecting sub-part (111).

4. The light strip connection structure according to claim 3, characterized in that, The circuit board (1) further includes an amplification section (13), which is connected to the end of the bending sub-section (112) away from the bonding sub-section (111), and the second connection section (3) is connected to the end of the amplification section (13) away from the bending sub-section (112); The width of the amplification section (13) is greater than the width of the main body (11).

5. The light strip connection structure according to any one of claims 1 to 4, characterized in that, The shape formed by the branch (12) and the main stem (11) is T-shaped; or, the shape formed by the branch (12) and the main stem (11) is Y-shaped.

6. The light strip connection structure according to any one of claims 1 to 4, characterized in that, The multiple branches (12) are all located on the same side of the main stem (11).

7. The light strip connection structure according to any one of claims 1 to 4, characterized in that, The first connecting part (2) is a 22-pin FPC gold finger; or, the second connecting part (3) is a 26-pin FPC gold finger.

8. The light strip connection structure according to any one of claims 1 to 4, characterized in that, It also includes a reinforcing plate (4), which is attached to the surface of the circuit board (1).

9. A backlight module, characterized in that, Includes the light strip connection structure as described in any one of claims 1 to 8; It also includes a back plate (5) and light strips (6), wherein a plurality of light strips (6) are arranged at intervals on the back plate (5), and each light strip (6) is electrically connected to a first connecting part (2).

10. The backlight module according to claim 9, characterized in that, The light strip (6) is provided with a socket (61), and the socket (61) is electrically connected to the first connecting part (2); And / or, the backlight module further includes a backlight driver board (7), the backlight driver board (7) is disposed on the back plate (5) and on the side facing away from the light strip (6), the back plate (5) has a through hole (51), the circuit board (1) passes through the through hole (51) in a bent state and is electrically connected to the backlight driver board (7) through the second connecting part (3).

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