Light bar connecting structure, backlight module and display device
By using double-sided wiring FPC connectors in the Mini LED backlight module, a centralized electrical connection between multiple LED strips and the driver board is achieved, solving the problem of complex connection between the driver board and LED strips, reducing material costs, and improving connection stability and adaptability to integrated design.
Patent Information
- Application Number
- CN202610015187.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-06
- Publication Date
- 2026-03-31
AI Technical Summary
In Mini LED backlight modules, the connection between the driver board and each backlight strip is complex, resulting in a complex overall wiring structure, which is not conducive to integrated design and cost control.
The flexible FPC connecting cable with double-sided wiring is used. At least two first connecting parts are set to be electrically connected to the light strip, and the second connecting parts are connected to the driver board, so as to realize the centralized electrical connection of multiple light strips and reduce the number of connecting wires.
The wiring structure between the driver board and the LED strip is simplified, reducing material costs, improving connection stability and adaptability, and facilitating the integrated design of the backlight module.
Smart Images

Figure CN121768283A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of display technology, and in particular to a light strip connection structure, a backlight module, and a display device. Background Technology
[0002] With the continuous development of display technology, Mini LED backlight technology, due to its high brightness level, contrast ratio, and fine-grained local dimming capabilities, is gradually being applied to high-end TVs, monitors, and other display devices. Typically, a Mini LED backlight module includes a driver board, a backlight strip assembly composed of multiple zones, and connecting lines for transmitting power and control signals between the driver board and each backlight strip.
[0003] In related technologies, the driver board and each backlight strip are typically connected one-to-one with their respective connection terminals via cables to meet the requirements for independent power supply and control of the backlight zones. However, when there are a large number of backlight zones, the overall wiring structure of the above connection method is relatively complex, which is not conducive to the integrated design and cost control of the backlight module. Summary of the Invention
[0004] This application provides a light strip connection structure, a backlight module, and a display device, which can reduce the wiring complexity of the light strip and 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: At least two light strips, each equipped with an electrical interface; and An FPC connection cable having at least two first connection portions, each of the at least two first connection portions being detachably electrically connected to an electrical interface on a corresponding light strip; the FPC connection cable also having a second connection portion configured to be electrically connected to a driver board; The FPC connection line is a flexible drive board with double-sided wiring.
[0006] In some embodiments, the first connection portion and / or the second connection portion are conductive finger structures formed on the FPC connection line.
[0007] In some embodiments, the conductive finger structure is a gold finger structure.
[0008] In some embodiments, the electrical interface is a connector that matches the conductive finger structure.
[0009] In some embodiments, the at least two first connecting portions are spaced apart along the length direction of the FPC connecting line.
[0010] In some embodiments, the spacing between two adjacent first connecting portions corresponds to the installation spacing between two adjacent light strips.
[0011] In some embodiments, the wiring on both sides of the FPC connector is electrically connected via vias.
[0012] In some embodiments, the thickness of the FPC connector is 0.1mm to 0.3mm.
[0013] In some embodiments, the first connection portion has at least six pins, and the first connection portion is used to transmit at least three of the following: power supply, ground, driver chip power supply, clock signal, and data signal.
[0014] In some embodiments, the pin length of the first connection gradually increases along the direction away from the second connection.
[0015] According to a second aspect of this application, a backlight module is provided, including the light strip connection structure described in the above technical solution.
[0016] In some embodiments, the backlight module further includes a back plate and a driver board, the light strip is disposed on a first side of the back plate, the driver board is disposed on a second side of the back plate, the back plate is provided with a through hole, and the FPC connecting line passes through the through hole to connect the second connecting part to the driver board.
[0017] According to a third aspect of this application, a display device is also provided, including the light strip connection structure described in the above technical solution, or including the backlight module described in the above technical solution.
[0018] In the LED strip connection structure of this application embodiment, by providing at least two first connecting parts on an FPC connecting line, the FPC connecting line can establish electrical connections with multiple LED strips respectively, thereby replacing multiple independent wires with a single FPC connecting line to complete the connection between the driver board and the LED strips. Based on the above structural configuration, the number of connecting wires can be reduced, the wiring structure between the driver board and the LED strips can be simplified, thus facilitating assembly operations and reducing wire consumption and corresponding material costs. Simultaneously, since the connection structure is more concentrated and the number of connection nodes is reduced, the overall connection stability is improved, making it suitable for the integrated design and cost control of backlight modules.
[0019] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description
[0020] 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.
[0021] 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.
[0022] Figure 1 This is a schematic diagram of the light strip connection structure provided in an exemplary embodiment of this disclosure; Figure 2 This is a schematic diagram of the structure of the FPC connector provided in an exemplary embodiment of this disclosure; Figure 3 This is a schematic diagram of another FPC connector provided in an exemplary embodiment of this disclosure; Figure 4 This is a partial structural schematic diagram of the backlight assembly provided in an exemplary embodiment of this disclosure; Figure 5 This is a schematic diagram of the structure of the backlight assembly provided in an exemplary embodiment of this disclosure.
[0023] Explanation of reference numerals in the attached figures: 10. Backplate; 11. Through hole; 20. Driver board; 100. LED strip; 110. Electrical interface; 200. FPC connecting cable; 210. First connecting part; 220. Second connecting part. Detailed Implementation
[0024] 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.
[0025] According to the first aspect of this application, referring to Figures 1 to 5This disclosure provides a light strip connection structure, including at least two light strips 100 and one FPC connection line 200. Each light strip 100 is provided with an electrical interface 110 for electrical connection between the light strip 100 and external power supply and control lines. The light strip 100 can be a Mini LED backlight strip 100, with multiple light-emitting units arranged along its length. The electrical interface 110 can be located at the end of the light strip 100 or in a region near the end; its specific form can be a plug-in connector, a solder pad, or other structure suitable for electrical connection, which is not limited in this disclosure.
[0026] In some embodiments, refer to Figure 1 and Figure 2 The FPC connection cable 200 has at least two first connection portions 210, each of the at least two first connection portions 210 being detachably electrically connected to an electrical interface 110 on a corresponding light strip 100; the FPC connection cable 200 also has a second connection portion 220, which is configured to be electrically connected to the driver board 20; the FPC connection cable 200 is a double-sided wiring flexible driver board 20.
[0027] Different first connecting parts 210 are used to establish detachable electrical connections with electrical interfaces 110 on different light strips 100. By integrating multiple first connecting parts 210 on the same FPC connecting line 200, one FPC connecting line 200 can connect multiple light strips 100 at the same time, thereby achieving a centralized arrangement of light strip 100 connections.
[0028] The FPC connection cable 200 is also provided with a second connection part 220, which is used to establish an electrical connection with the driver board 20. Through this second connection part 220, the power supply lines and / or control signal lines of multiple light strips 100 can be centrally led out to one side of the driver board 20, which helps to reduce the number of connection ports on the driver board 20 side and simplify the connection structure between the driver board 20 and the light strips 100.
[0029] For example, the FPC connection cable 200 adopts a double-sided wiring structure, with conductive lines laid on both sides of the substrate and electrical connections between the lines on both sides achieved through vias. This double-sided wiring method allows for the laying of more power or signal lines within limited line widths, suitable for meeting the simultaneous power supply and control needs of multiple LED strips 100, while also improving the compactness and layout flexibility of the overall connection structure.
[0030] In some embodiments, refer to Figure 1 and Figure 2The first connecting portion 210 and / or the second connecting portion 220 are conductive finger-like structures formed on the FPC connecting line 200. The conductive finger-like structure can be understood as consisting of multiple conductive pins that are parallel to each other and extend in the same direction, with each conductive pin spaced apart from the others and electrically connected to the conductive lines inside the FPC connecting line 200. Through this structural form, the connecting portion can form a plug-in engagement with the corresponding plug-in connector, thereby realizing the electrical connection between the FPC connecting line 200 and the light strip 100 or the driver board 20.
[0031] Since the conductive finger structure is typically arranged along the edge area of the FPC connection line 200, during the insertion process, each conductive pin can sequentially contact the elastic contacts inside the connector in the insertion direction, which is beneficial for forming a stable electrical contact relationship. At the same time, compared with point welding or single contact point connection methods, the structure of multiple conductive pins arranged in parallel can disperse contact stress to a certain extent, which is suitable for improving the electrical connection reliability of the connection part.
[0032] For example, the conductive finger structure can be further configured as a gold finger structure. The gold finger structure, by forming a wear-resistant plating layer on the surface of the conductive pins, allows the conductive pins to maintain good conductivity during repeated insertion and removal. By employing a gold finger structure, the stability of the connection during repeated assembly or maintenance operations is improved, making it suitable for applications requiring detachable connections.
[0033] It should be understood that the conductive finger structure described in this disclosure is not limited to a specific number or arrangement of pins. The number of conductive pins can be set according to the number of power lines and signal lines to be transmitted, for example, for transmitting at least some of the power, ground, and control signals; the width, spacing, and arrangement of the conductive pins can also be adjusted accordingly based on the connector structure. As long as the connection part is electrically connected to the external connector through multiple parallel conductive pins, it can be considered an equivalent implementation of the conductive finger structure.
[0034] In some embodiments, the first connecting portion 210 and the second connecting portion 220 may adopt the same type of conductive finger structure, or they may adopt different forms of conductive finger structures depending on the object being connected. For example, the first connecting portion 210 connected to the light strip 100 may adopt a plug-in gold finger structure, while the second connecting portion 220 connected to the driver board 20 may adopt a soldered conductive pin structure. The above-mentioned different structural forms can be combined and set according to actual needs, and all should be regarded as optional implementations of the technical solution of this disclosure.
[0035] With the above structural configuration, when the FPC connecting line 200 establishes an electrical connection with the light strip 100 and the driver board 20, it can maintain a compact structure while taking into account assembly convenience and connection stability, which is conducive to realizing the structural design requirements of centralized connection of multiple light strips 100.
[0036] In some embodiments, refer to Figure 1 and Figure 2 The FPC connecting line 200 has an overall L-shaped structure, and the second connecting part 220 is located at the corner of the L-shaped structure; a plurality of first connecting parts 210 are arranged along the extension direction of one arm of the L-shaped structure and protrude from the inner edge of the arm into the inner region of the L-shaped structure.
[0037] In some embodiments, the conductive finger structure is a gold finger structure. A gold finger structure typically refers to strip-shaped conductive contacts formed on the edge or end of a flexible substrate, arranged in a finger-like pattern along the insertion or mating direction. A preset spacing is maintained between each conductive contact, and a noble metal coating can be formed on the surface of the conductive layer through a surface electroplating process. By setting the conductive finger structure as a gold finger structure, when the first connecting portion 210 and / or the second connecting portion 220 are inserted or bonded to the corresponding electrical interface 110 or drive board 20, multi-point contact can be achieved through the linear distribution of the finger-shaped conductive contacts. This helps to disperse contact stress during the connection process, reduces the probability of localized poor contact, and thereby improves the stability of the electrical connection.
[0038] For example, the gold finger structure can be disposed in the edge region of the FPC connecting line 200, with the conductive contacts extending along the thickness direction or planar direction of the FPC connecting line 200, so that it can form surface contact or line contact with the corresponding electrode on the lamp strip 100 or driver board 20 in the plug-in or crimp state. Based on this structure, when the FPC connecting line 200 undergoes a certain degree of bending or positional deviation, the finger-shaped conductive contacts can still maintain an electrical connection with the corresponding electrical interface 110 through the redundant contact area in its length direction, which is beneficial to improving the adaptability of assembly tolerances.
[0039] In some alternative embodiments, the surface of the gold finger structure can be plated with gold, nickel, or silver to balance conductivity and wear resistance in different application scenarios. This disclosure does not limit this. Furthermore, in addition to the gold finger structure, the conductive finger structure can also be a strip pad, a segmented conductive sheet, or equidistantly arranged conductive bumps, etc. As long as a detachable electrical connection with the corresponding electrical interface 110 can be achieved, it can be considered an equivalent replacement for the gold finger structure, thus providing effective support for the claims.
[0040] In some embodiments, refer to Figure 1 and Figure 2The electrical interface 110 is a connector that matches the conductive finger structure. This connector is used to form a detachable electrical connection with the first connecting part 210. "Matching" can be understood as being compatible with the conductive finger structure in terms of structural dimensions, contact arrangement, and electrical connection form. For example, the connector may have conductive contacts that correspond one-to-one with the conductive finger structure, and the number, spacing, and arrangement direction of these contacts correspond to the finger-shaped conductive contacts of the conductive finger structure, thereby forming a stable electrical connection in the plugged-in or mated state.
[0041] For example, the connector can be a plug-in connector, a snap-in connector, or a crimp connector, and may have an internal elastic conductive contact piece to apply an elastic contact force to the conductive finger structure when it is inserted or crimped, which helps to maintain a reliable electrical contact state after assembly. Based on the above structure, when the light strip 100 is assembled with the FPC connecting line 200, the electrical connection can be completed by simple plugging or alignment crimping, which helps to improve assembly efficiency and reduce the operational complexity of the assembly process.
[0042] In some alternative embodiments, the connector can be installed at the end or edge of the light strip 100, and its fixing method can be welding, bonding, or mechanical fixing, etc., which is not limited in this disclosure. In addition, the electrical interface 110 can also be a conductive pad or elastic contact structure that directly contacts the conductive finger structure, as long as it can realize the electrical connection function with the conductive finger structure, it can be used as an equivalent replacement for the connector, thereby supporting the relevant claims.
[0043] In some embodiments, refer to Figure 1 and Figure 2 At least two first connection portions 210 are spaced apart along the length of the FPC connection line 200. By arranging multiple first connection portions 210 along the length, the same FPC connection line 200 can establish electrical connections with multiple light strips 100 at different positions, thereby providing structural conditions for parallel or cascaded connections of multiple light strips 100, which helps to reduce the number of independent connection lines and simplify the overall wiring layout.
[0044] In some embodiments, the spacing between two adjacent first connecting portions 210 corresponds to the installation spacing between two adjacent light strips 100. "Corresponding" can be understood as meaning that, in the assembled state, the distribution position of the first connecting portions 210 on the FPC connecting line 200 matches the installation position of the light strips 100 in the backlight module, allowing each first connecting portion 210 to connect to the electrical interface 110 of the corresponding light strip 100 without requiring additional bending or stretching of the FPC connecting line 200. Based on this structural relationship, it is beneficial to achieve alignment during assembly, reduce assembly difficulty, and help reduce stress concentration on the FPC connecting line 200 in the connected state, thereby improving the stability and reliability of the connection structure.
[0045] In some embodiments, the wiring on both sides of the FPC connector 200 is electrically connected via vias. A via can be a metallized through-hole 11 penetrating the substrate of the FPC connector 200, used to establish an electrical connection path between different wiring layers. By providing vias, conductive lines located on different surfaces of the FPC connector 200 can be interconnected, thus adapting to more complex circuit routing requirements and facilitating the rational layout of signal and power lines under limited line width and space conditions, improving the flexibility and integration of wiring.
[0046] In some embodiments, the thickness of the FPC connecting line 200 is 0.1mm to 0.3mm. By controlling the thickness of the FPC connecting line 200 within the above-mentioned range, on the one hand, the flexibility of the flexible substrate during bending and laying can be taken into account, facilitating the wiring and assembly of the FPC connecting line 200 between the light strip 100 and the driver board 20; on the other hand, the relatively small overall thickness helps reduce the risk of multiple connecting lines stacking up the light strip 100, reflector, and other structures, thus meeting the requirements for thinner backlight module designs. It should be noted that, provided that electrical performance and mechanical strength requirements are met, the specific thickness of the FPC connecting line 200 can be adjusted accordingly based on the actual application scenario.
[0047] For example, the thickness of the FPC connecting cable 200 is 0.1mm, 0.105mm, 0.109mm, 0.113mm, 0.118mm, 0.122mm, 0.127mm, 0.131mm, 0.136mm, 0.140mm, 0.145mm, 0.151mm, 0.156mm, 0.160mm, 0.165mm, 0.171mm, 0.176mm, 0.182mm, 0.187mm, 0.191mm, 0.196mm, 0.203mm, 0.209mm, 0.215mm, 0.222mm, 0.231mm, 0.245mm, 0.268mm, 0.287mm, or 0.3mm. This application embodiment does not specifically limit this.
[0048] In some embodiments, the first connection portion 210 has at least six pins and is used to transmit at least three of the following: power supply, ground, driver chip power supply, clock signal, and data signal. By adding multiple pins, the FPC connection line 200 can simultaneously meet the transmission requirements of a large number of signal lines and power lines in Mini LED backlights, such as power supply, power supply, clock signal, and data control signal for the driver IC, thus adapting to the high partitioning and multi-signal control characteristics of Mini LED backlight modules.
[0049] In some embodiments, refer to Figure 1 and Figure 3 Along the direction away from the second connecting portion 220, the pin length of the first connecting portion 210 gradually increases. The pin length can be understood as the effective contact length of the conductive finger-like structure or gold finger when inserted into the corresponding electrical interface 110. By setting the first connecting portion 210 away from the second connecting portion 220 to have longer pins, and the first connecting portion 210 closer to the second connecting portion 220 to have shorter pins, a sequential insertion order can be formed during assembly.
[0050] Specifically, when installing the FPC connector 200, the first connector 210 on the side furthest from the second connector 220 can be inserted into the corresponding electrical interface 110 firstly, inserting it to a certain depth or making contact for a certain length. Then, the first connectors 210 on the side closest to the second connector 220 are inserted sequentially, gradually completing the insertion of all the first connectors 210 into their respective electrical interfaces 110. This structural arrangement helps avoid the inconvenience of inserting multiple connectors simultaneously or the excessive force on the FPC connector 200 during operation, thereby reducing assembly difficulty.
[0051] Furthermore, the first connecting portion 210, located away from the second connecting portion 220, has longer pins, resulting in a larger contact area with the electrical interface 110 and relatively greater friction. Installing this first connecting portion 210 first, followed by other first connecting portions 210 with shorter pins, helps maintain a stable contact between the FPC connecting cable 200 and the electrical interface 110, reducing the risk of disengagement or displacement of the inserted portion during subsequent operations.
[0052] It should be understood that the design of "gradually increasing pin length" mentioned in this disclosure is not limited to a strictly linear increasing form. It can also adopt a stepped, curved, or unequal spacing increasing layout. As long as the function of sequential insertion and step-by-step contact can be achieved during the assembly process, it is an equivalent implementation of this disclosure, thereby providing sufficient support for the relevant claims.
[0053] According to a second aspect of this disclosure, a backlight module is provided, including the LED strip connection structure described in the above embodiments. This backlight module possesses all the beneficial effects of the aforementioned LED strip connection structure, which will not be elaborated further herein.
[0054] In some embodiments, refer to Figure 4 and Figure 5 The backlight module also includes a backplate 10 and a driver board 20. A light strip 100 is disposed on the first side of the backplate 10, and the driver board 20 is disposed on the second side of the backplate 10, such that the light strip 100 and the driver board 20 are located on opposite sides of the backplate 10. The backplate 10 has a through hole 11 through which the FPC connecting cable 200 passes, allowing the second connecting portion 220 to connect with the driver board 20. The through hole 11 can be a hole or opening penetrating the backplate 10, and its size and position are designed according to the width and thickness of the FPC connecting cable 200 and the structural features of the second connecting portion 220, so that the FPC connecting cable 200 can pass smoothly and connect with the driver board 20.
[0055] With the above structural arrangement, the LED strip 100 and the driver board 20 are located on opposite sides of the backplate 10, which helps to reduce the direct impact of the heat generated by the driver board 20 during operation on the LED strip 100. Simultaneously, the heat generated by the LED strip 100 when emitting light will not directly affect the driver board 20, thus benefiting the overall thermal management and heat dissipation performance of the backlight module. Furthermore, the through-hole 11 structure of the backplate 10 provides a flexible wiring channel for the FPC connection cable 200, allowing the FPC connection cable 200 to achieve electrical connection from the LED strip 100 to the driver board 20 without increasing the overall module thickness, which helps maintain the overall thin design of the module.
[0056] It should be understood that the specific shape, size, and number of through holes 11 in this disclosure are not strictly limited, and can be circular, rectangular, elliptical, or other opening forms suitable for the passage of FPC connecting wires 200. The arrangement of FPC connecting wires 200 can also be adjusted according to actual installation requirements. For example, they can pass through the through holes 11 from the side or oblique direction of the back plate 10 to connect with the driver board 20. As long as the electrical connection function between the FPC connecting wires 200 and the driver board 20 can be achieved, while maintaining the spatial separation and thermal isolation effect between the light strip 100 and the driver board 20, they all belong to the equivalent implementation schemes described in this disclosure, thereby providing sufficient support for the relevant claims.
[0057] According to a third aspect of this disclosure, a display device is provided, including the light strip connection structure of the above embodiments, or including the backlight module of the above embodiments. This display device has all the beneficial effects of the above-described light strip connection structure or backlight module, which will not be elaborated further herein.
[0058] 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.
[0059] 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 in other embodiments.
[0060] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.
[0061] 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 bar connection structure, characterized by, The application relates to a backlight module. The backlight module comprises: at least two lamp strips (100), each of the lamp strips (100) being provided with an electrical interface (110); and an FPC connecting line (200), the FPC connecting line (200) having at least two first connecting portions (210), each of the at least two first connecting portions (210) being detachably electrically connected with the electrical interface (110) on a corresponding lamp strip (100); the FPC connecting line (200) further has a second connecting portion (220) configured to be electrically connected with a driving board (20); 2. The light bar connection structure of claim 1, wherein, wherein the FPC connecting line (200) is a double-sided wiring flexible driving board (20).
3. The light bar connection structure of claim 2, wherein, The first connecting portion (210) and / or the second connecting portion (220) is a conductive finger-shaped structure formed on the FPC connecting line (200). The conductive finger-shaped structure is a gold finger structure.
4. The light bar connection structure of claim 1, wherein, And / or the electrical interface (110) is a connector matched with the conductive finger-shaped structure.
5. The light bar connection structure of claim 4, wherein, The at least two first connecting portions (210) are arranged at intervals along the length direction of the FPC connecting line (200).
6. The light bar connection structure of claim 1, wherein, The interval between the adjacent two first connecting portions (210) corresponds to the mounting interval between the adjacent two lamp strips (100). The wirings on the two sides of the FPC connecting line (200) are electrically connected through a via hole.
7. The light bar connection structure of claim 1, wherein, And / or the thickness of the FPC connecting line (200) is 0.1mm-0.3mm. The number of pins of the first connecting portion (210) is not less than 6, and the first connecting portion (210) is used for transmitting at least three of power supply, ground wire, driving chip power supply, clock signal and data signal.
8. A backlight module, characterized in that, And / or the pin length of the first connecting portion (210) gradually increases in the direction away from the second connecting portion (220).
9. The backlight module of claim 8, wherein, The backlight module comprises the lamp strip connecting structure in any one of claims 1 to 7.
10. A display device, characterized by comprising: The backlight module further comprises a back plate (10) and a driving board (20), the lamp strip (100) is arranged on the first surface of the back plate (10), the driving board (20) is arranged on the second surface of the back plate (10), the back plate (10) is provided with a through hole (11), the FPC connecting line (200) passes through the through hole (11) so that the second connecting portion (220) is connected with the driving board (20). The backlight module comprises the lamp strip connecting structure in any one of claims 1 to 7, or the backlight module in claim 8 or 9. The backlight module comprises the lamp strip connecting structure in any one of claims 1 to 7, or the backlight module in claim 8 or 9.