Light bar assembly, backlight module and display device

Abstract

The application relates to the technical field of display, and particularly provides a lamp strip assembly, a backlight module and a display device, aiming to solve the problem of how to provide a lamp strip with a multi-lamp series connection structure and capable of lamp area control. In the lamp strip assembly provided by the application, a single lamp strip comprises k driving modules, when k=1, a first connector is connected with a first module interface of the driving module; when k>=2, the driving modules are cascaded in turn, and the first connector is connected with a second module interface of the last-stage driving module; the driving module comprises two driving branches, each driving branch comprises n driving modules, each driving module comprises an LED lamp bead and a driving chip; when n=1, the driving chip is connected with the module interfaces at both ends of the driving module through a serial bus; when n>=2, the driving modules are cascaded in turn through the serial bus, and the driving chips of the first-stage and last-stage driving modules are respectively connected with the module interfaces at both ends of the driving module through the serial bus. The lamp strip assembly forms a multi-lamp series connection structure and can realize lamp area control.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a light strip assembly, a backlight module, and a display device. Background Technology

[0002] LED (Light Emitting Diode) light strips are widely used in display screens, ambient lighting, and other fields. Currently, a common type of LED light strip is a multi-lamp series structure. This type of LED light strip only has a global switching function, that is, it can only control the entire LED light strip, and cannot control the individual LEDs in the LED light strip, nor can it adjust the brightness of individual LEDs or perform other intelligent control. Another common type of LED light strip is designed with multiple light zones, each containing multiple LEDs. Each light zone is controlled by a separate MCU. This type of LED light strip has a light zone control function, but it cannot form a multi-lamp series structure for the following reasons: (1) The control lines of each LED in the light zone must be connected to the MCU, resulting in complex connection lines and a large number of peripheral devices; (2) It is difficult to cascade multiple MCUs (Micro Controller Units).

[0003] Accordingly, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0004] In order to overcome the above-mentioned defects, this application is made to solve or at least partially solve the following technical problem: how to provide an LED light strip with a multi-lamp series structure and capable of realizing lamp zone control.

[0005] In a first aspect, a light strip assembly is provided, including a single light strip and a first connector;

[0006] The single light strip includes k driving modules, and each driving module has a module interface at both ends;

[0007] When k=1, the first connector is connected to the first module interface of the drive module, and the first module interface is any one of the module interfaces of the drive module;

[0008] When k≥2, k driving modules are cascaded sequentially through their respective module interfaces. The first connector is connected to the second module interface of the final driving module formed by the cascade. The second module interface is not connected to any other driving modules within the single light strip.

[0009] The driving module includes two driving branches, each driving branch includes n driving modules, and each driving module includes multiple LED beads and a driving chip connected to each LED bead.

[0010] When n=1, the driver chip of the driver module is connected to the module interface at both ends of the driver module through a serial bus;

[0011] When n≥2, n drive modules are cascaded sequentially via a serial bus, and the drive chips of the first and last drive modules formed by the cascade are connected to the module interfaces at both ends of the drive module via the serial bus.

[0012] In one technical solution of the above-mentioned light strip assembly, the drive modules in the two drive branches correspond one-to-one and are mirrored;

[0013] Specifically, for the two driver modules that are mirrored, the LED beads in the two driver modules are mirrored one-to-one, and the driver chips in the two driver modules are mirrored.

[0014] In one technical solution of the above-mentioned light strip assembly, the first connector is a flexible connector. When k=1, the first connector is flexibly connected to the first module interface; when k≥2, the first connector is flexibly connected to the second module interface, and each pair of adjacent driving modules is flexibly connected through the module interface.

[0015] The LED beads and driver chip in the drive module are mounted on a flexible circuit board.

[0016] In one technical solution of the above-mentioned light strip assembly, the flexible connector is a connector using a flexible circuit board; the module interface of the drive module includes encapsulated contacts disposed on the flexible circuit board.

[0017] In one technical solution of the above-mentioned light strip assembly, when the first connector is flexibly connected to the first module interface, the first connector is attached to the first module interface to form a flexible connection;

[0018] When the first connector is flexibly connected to the second module interface, the first connector is mounted on the second module interface to form a flexible connection.

[0019] In one technical solution of the above-mentioned light strip assembly, the first module interface is provided with a shorting point. When the first connector is flexibly connected to the first module interface, the first connector is flexibly connected to the shorting point of the first module interface.

[0020] The second module interface is provided with a shorting point. When the first connector is flexibly connected to the second module interface, the shorting point of the first connector is flexibly connected to the second module interface.

[0021] In one technical solution of the above-mentioned light strip assembly, the first connector is flexibly connected to the shorting point via a jumper wire;

[0022] Alternatively, the first connector may be flexibly connected to the shorting point via a zero-ohm resistance.

[0023] In one technical solution of the above-mentioned light strip assembly, a reinforcing plate is provided on the side of the flexible circuit board of the driving module that is away from the LED beads and the driving chip.

[0024] In one technical solution of the above-mentioned light strip assembly, the LED bead is a MiniLED bead.

[0025] In a second aspect, a backlight module is provided, the backlight module including a drive controller, a plurality of light strip assemblies as described in any one of the first aspects above, and a plurality of second connectors, the second connectors being connected to the drive controller;

[0026] When the number of driving modules in a single light strip of the light strip assembly is k=1, the driving module is connected to a second connector through a third module interface. The third module interface is the remaining module interface at both ends of the driving module, excluding the first module interface.

[0027] When the number of driving modules k in a single light strip of the light strip assembly is greater than or equal to 2, the first-level driving module formed by cascading within the single light strip is connected to a second connector through a fourth module interface, and the fourth module interface is not connected to any other driving modules within the single light strip.

[0028] The drive controller is used to control the light emission of the LED beads in the light strip assembly.

[0029] In one technical solution of the aforementioned backlight module, the second connector is connected to the drive controller via a drive bus.

[0030] In a third aspect, a display device is provided, the display device comprising the backlight module described in any one of the second aspects above.

[0031] The above-described technical solutions of this application have at least one or more of the following beneficial effects:

[0032] In one technical solution of the light strip assembly provided in this application, the light strip assembly may include a single light strip and a first connector. The single light strip includes k driving modules, and each driving module has a module interface at both ends. When k=1, the first connector is connected to the first module interface of the driving module, and the first module interface is any one of the module interfaces of the driving module. When k≥2, the k driving modules are cascaded sequentially through their respective module interfaces, and the first connector is connected to the second module interface of the final driving module formed by the cascade. The second module interface is not connected to any other driving module within the single light strip. The driving module includes two driving branches, each driving branch including n driving modules. Each driving module includes multiple LED beads and a driving chip connected to each LED bead. When n=1, the driving chips of the driving modules are connected to the module interfaces at both ends of the driving module via a serial bus. When n≥2, the n driving modules are cascaded sequentially via a serial bus, and the driving chips of the first and last driving modules formed by the cascade are connected to the module interfaces at both ends of the driving module via a serial bus.

[0033] In the above implementation scheme, the LED beads and driver chip within the driver module are housed in the same module, achieving an integrated lamp-driver structure. This structure offers advantages such as simplicity, low cost, and the elimination of the need for external components. Within the light strip assembly, one or more driver modules can be flexibly combined into a single light zone according to actual needs. The entire light strip assembly can be divided into one or more light zones, and the LED beads within each zone can be controlled by the driver chip within the driver module, enabling the light strip assembly to have light zone control functionality. Furthermore, the number of cascaded driver modules within the light strip assembly can be flexibly adjusted according to the application scenario's requirements for light strip size, thereby changing the length of the light strip assembly.

[0034] In addition, when n≥2, the driver chips of each pair of adjacent driver modules in a driver branch are connected by a serial bus. This is equivalent to realizing a series structure of driver chips in a driver branch. Since the driver chips are connected to the LED beads, this series structure can be understood as realizing a multi-lamp series structure. If k=1, the light bar assembly is a multi-lamp series structure light bar assembly; if k≥2, the light bar assembly is still a multi-lamp series structure light bar assembly.

[0035] Specifically, when k≥2, each pair of adjacent driving modules within a single LED strip is connected via a module interface. Each driving module includes two driving branches. The driving chips of the first and last driving modules within each branch are connected to the module interfaces at both ends of the driving module via a serial bus. This is equivalent to connecting the two driving branches of each driving module in series, forming two independent series structures within the single LED strip (hereinafter referred to as the first series structure). The first connector connects to the second module interface of the last driving module in the single LED strip, which is equivalent to connecting the two first series structures together again, forming a complete series structure of driving branches within the LED strip assembly (hereinafter referred to as the second series structure). This second series structure is a series structure formed by connecting all driving branches within the single LED strip. At this point, regardless of whether n=1 or n≥2, the second series structure realizes the series structure of the driving chips. Since the driving chips are connected to the LED beads, the second series structure can be understood as realizing a multi-lamp series structure. Therefore, the LED strip assembly provided in the above implementation scheme is a multi-lamp series structure LED strip assembly.

[0036] In another technical solution for implementing the light strip assembly provided in this application, the first connector is a flexible connector. When k=1, the first connector is flexibly connected to the first module interface; when k≥2, the first connector is flexibly connected to the second module interface, and each pair of adjacent driving modules is flexibly connected through the module interface; the LED beads and driving chips in the driving module are disposed on the flexible circuit board.

[0037] In the above implementation scheme, using a flexible circuit board to build the drive module allows for flexible adjustment of the shape of the entire drive branch. Since the shapes of both drive branches within the drive module are flexibly adjustable, the shape of the entire drive module is also flexibly adjustable. Furthermore, when k≥2, each pair of adjacent drive modules within a single LED strip is flexibly connected via a module interface, making the shape of the entire single LED strip flexibly adjustable. The first connector is also flexibly connected to the second module interface of the final drive module in the single LED strip, thus making the shape of the entire LED strip assembly flexibly adjustable. In practical applications, the LED strip assembly can be folded, bent, or otherwise manipulated according to the application scenario's requirements for the LED strip shape, flexibly adjusting the shape of the LED strip assembly. Attached Figure Description

[0038] The disclosure of this application will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. Wherein:

[0039] Figure 1 This is a schematic diagram of the main structure of a light strip assembly according to an embodiment of this application;

[0040] Figure 2 This is a schematic diagram of the main structure of a drive module according to an embodiment of this application;

[0041] Figure 3 This is a schematic diagram of an LED light strip using an AM driving architecture in the prior art;

[0042] Figure 4 This is a schematic diagram of a light strip assembly according to an embodiment of this application;

[0043] Figure 5 This is a schematic diagram of a driving branch in an LED light strip using an AM driving architecture in the prior art;

[0044] Figure 6 This is a schematic diagram showing the connection between a light strip assembly and a drive controller according to an embodiment of this application;

[0045] Figure 7 This is a schematic diagram of a single LED strip according to an embodiment of this application. Detailed Implementation

[0046] Some embodiments of this application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application.

[0047] The following describes an embodiment of the light strip assembly provided in this application.

[0048] In the embodiments provided in this application, the light strip assembly mainly includes a single light strip and a first connector. The single light strip includes k driving modules, where k ≥ 1, and each driving module has a module interface at both ends. For example, see Appendix Figure 1 The number of driving modules within a single LED strip is k≥2.

[0049] When k=1, the first connector is connected to the first module interface of the drive module, and the first module interface is any one of the module interfaces at both ends of the drive module.

[0050] When k ≥ 2, k drive modules are cascaded sequentially through their respective module interfaces. The first connector is connected to the second module interface of the final drive module formed by the cascade. The second module interface is not connected to any other drive modules within a single LED strip. For example... Figure 1As shown, drive modules 1 through k are cascaded sequentially. The first-stage drive module (i.e., the drive module arranged in the first stage) is drive module 1, and the last-stage drive module (i.e., the drive module arranged in the last stage) is drive module k. The module interfaces at both ends of drive module k are module interface 1 and module interface 2, respectively. Module interface 1 is connected to drive module k-1 during cascading. Module interface 2 is not connected to any other module interface. Therefore, module interface 2 is the second module interface of the last-stage drive module, and the first connector is connected to this module interface 2.

[0051] The light strip assembly has only one first connector, which can be used to identify the light strip assembly. For example, identification information of the light strip assembly can be printed on the first connector.

[0052] The following section will continue to explain the drive module.

[0053] In the embodiments provided in this application, the driving module may include two driving branches, each driving branch including n driving modules, where n≥1. Each driving module includes multiple LED beads and a driving chip connected to each LED bead. See appendix. Figure 2 , Figure 2 An exemplary driving module is shown, in which one driving branch includes a driving module 1 and another driving branch includes a driving module 2. Both driving modules include p (p≥1) LED beads and a driving chip, which is connected to the p LED beads.

[0054] In this embodiment, the LED beads and driver chip are housed within the same driver module, which can be understood as an integrated lamp-driver structure. Furthermore, since each driver module has an independent driver chip, the LED beads within that module are driven independently by that chip, without sharing a driver chip with other modules. This architecture can also be understood as an AM (Active Matrix) driver architecture. The number of LED beads within the driver module is less than or equal to the maximum number of LEDs driven by the driver chip. For example, if the driver chip is an 8-channel chip, it can drive a maximum of 8 LED beads, and the number of LED beads in the driver module, n, is ≤ 8. This embodiment does not specifically limit the type of driver chip and LED beads. In some implementations, the LED beads within the driver module are MiniLED beads.

[0055] In the embodiments of this application, the number of drive modules in the two drive branches of the drive module is the same, and the connection relationship is also the same. The following description takes one drive branch as an example.

[0056] When n=1, the driver chip of the driver module is connected to the module interface at both ends of the driver module through a serial bus.

[0057] When n≥2, n driver modules are cascaded sequentially via a serial bus, and the driver chips of the first-stage (i.e., the first stage) and last-stage (i.e., the last stage) driver modules formed by the cascade are connected to the module interfaces at both ends of the driver module via the serial bus. Figure 1 Taking the drive branch 1 of the drive module k as an example, drive modules 1 to n are cascaded in sequence within the drive branch 1. Drive modules 1 and n are the first-level and last-level drive modules, respectively. Drive module 1 is connected to module interface 1 of drive module k, and drive module n is connected to module interface 2 of drive module k.

[0058] The technical effects of the light strip assembly provided in the embodiments of this application will be described below.

[0059] (1) One or more driving modules can be flexibly combined into a light zone according to actual needs within the light strip assembly. The entire light strip assembly can be divided into one or more light zones. The LED beads in each light zone can be controlled by the driving chip in the driving module, so that the light strip assembly has the function of light zone control.

[0060] (2) The driver module in this application implements an integrated lamp driver structure, which has the advantages of simple structure, low cost and no need for external components. For example, a conventional LED light strip in the prior art is designed with multiple light zones, each containing multiple LEDs, and each light zone is controlled by a separate MCU. However, the control lines of each LED in the light zone must be connected to the MCU, resulting in complex wiring and a large number of external components. In contrast, this application adopts an integrated lamp driver structure, which eliminates the need for complex wiring and external components, simplifying the structure of the light strip assembly and reducing its cost.

[0061] (3) In the prior art, LED light strips with light zone control function cannot adopt a multi-lamp series structure, while the light strip assembly provided in this application realizes a multi-lamp series structure.

[0062] For example, see the appendix. Figure 3 , Figure 3 This is a schematic diagram of an LED light strip using an AM driving architecture in the prior art. The LED light strip has 8 driving branches, which are connected to a driving controller and present a tree-like structure. Each driving branch includes 4 modules, and each module includes 4 MiniLEDs and a dimmer.

[0063] In the LED strip assembly provided in this application, when n≥2, the driver chips of every two adjacent driver modules within a single driver branch are connected via a serial bus. This is equivalent to implementing a series structure of driver chips within a single driver branch. Since the driver chips are connected to the LED beads, this series structure can be understood as implementing a multi-lamp series structure. If k=1, the LED strip assembly is a multi-lamp series structure. If k≥2, the LED strip assembly is still a multi-lamp series structure.

[0064] Specifically, when k≥2, each pair of adjacent driving modules within a single LED strip is connected via a module interface. Each driving module includes two driving branches. The driving chips of the first and last driving modules within each branch are connected to the module interfaces at both ends of the driving module via a serial bus. This is equivalent to connecting the two driving branches of each driving module in series, forming two independent series-connected driving branches within the single LED strip (hereinafter described as the first series structure). See Appendix for examples. Figure 1 , Figure 1 In each drive module, the drive branch on the left is described as drive branch 1, and the drive branch on the right is described as drive branch 2. Drive branches 1 in the first to the kth drive modules are connected in sequence to form a first series structure, and drive branches 2 in the first to the kth drive modules are connected in sequence to form another first series structure.

[0065] The first connector connects to the second module interface of the final-stage driver module in the individual LED strip. This is equivalent to connecting the two aforementioned first series structures together again, forming a complete series structure of driver branches within the LED strip assembly (hereinafter described as the second series structure). This second series structure is a series structure formed by connecting all driver branches within the individual LED strip. At this point, regardless of whether n = 1 or n ≥ 2, the aforementioned second series structure realizes the series structure of the driver chips. See Appendix for an example. Figure 1 , Figure 1 The second series structure in the middle includes, in sequence: drive branch 1 in the first to kth drive modules, the first connector, and drive branch 2 in the kth to 1st drive modules, that is... Figure 1 The dashed arrow indicates the series connection structure. Since the driver chip is connected to the LED beads, the second series connection structure described above can be understood as implementing a multi-lamp series connection structure; that is, when k≥2, the LED strip assembly is still a multi-lamp series connection structure. Furthermore, each first series connection structure can be cascaded with multiple driver modules via a single serial bus, thus requiring only two serial buses to cascade numerous driver modules. This embodiment does not specifically limit the type of serial bus or the software protocol used.

[0066] The embodiments of the light strip assembly provided in this application will be described below.

[0067] In some embodiments provided in this application, for any driving module, the driving modules in the two driving branches of the driving module correspond one-to-one and are mirrored. Furthermore, for two corresponding and mirrored driving modules in the two driving branches, the LED beads in these two driving modules also correspond one-to-one and are mirrored, and the driving chips in these two driving modules are also mirrored. See, for example, the appendix... Figure 4 , Figure 4 This is a schematic diagram of a light strip assembly according to some embodiments of this application. Figure 4 As shown, a single LED strip in the LED strip assembly includes a driver module. Driver modules 1 to 2 in driver branch 1 correspond to and are mirror images of driver modules 1 to 2 in driver branch 2. In the two driver modules 1, the LED beads are mirror images of each other, and the driver chips are also mirror images of each other; similarly, in the two driver modules 2, the LED beads are mirror images of each other, and the driver chips are also mirror images of each other. Figure 4 The arrows in the diagram indicate the direction of data flow.

[0068] The layout structure of the above-mentioned driver module can be understood as a dual-chip mirror layout. The following section, in conjunction with the appendix... Figure 5 To be continued Figure 7 The technical effects of this dual-chip mirror layout will be explained.

[0069] First, please refer to the appendix. Figure 5 , Figure 5 This is a schematic diagram of a driving branch in an LED light strip using an AM driving architecture in the prior art. This driving branch is related to... Figure 3 The driving branches in the two circuits are similar, the difference being that... Figure 5 The drive branch in the middle includes two modules (i.e. Figure 5 (The first and last modules in the text) Figure 3 The drive branch in the system includes four modules. Figure 5 The primary and secondary modules are connected via a serial bus. The LEDs in each module are arranged sequentially, along with the driver chips, forming a long, strip-like layout. For modules connected via a serial bus, the output of the secondary module must be connected to the input of the driver branch, forming a loop. For example... Figure 5 As shown, the output of the final-stage module is returned to the driver controller as a bus output. With the above-described elongated layout, the size of the drive branch is essentially fixed, and the aforementioned loop is also fixed, thus the overall size of the LED strip is fixed. In practical applications, the LED strip needs to be custom-made according to the application scenario's requirements for its size.

[0070] See appendix Figure 6 , Figure 6This is a schematic diagram showing the connection between a light strip assembly and a drive controller according to some embodiments of this application. Figure 6 Taking the light strip assembly 1 as an example, in the light strip assembly 1, the driving module 1 of the individual light strip is connected to the driving controller through the second connector 1. The light strip assembly 1 and the driving controller can form a loop, that is... Figure 6 The loop structure is shown by the dashed arrow. When using a dual-chip mirror layout, the individual LED strip provided in this application can serve as a standard component. In practical applications, the individual LED strip can be cut to meet the size requirements of the LED strip according to the application scenario. Connecting the cut individual LED strip to the first connector yields a strip assembly that meets the LED strip size requirements. Regardless of the length of the cut individual LED strip, the strip assembly can form a loop with the driver controller, ensuring normal operation. Based on this, standardized production can be achieved, significantly reducing costs caused by design, production, and material variations.

[0071] Cutting a single LED strip involves extracting a portion of its cascaded driver modules and using this portion as the new LED strip. See the appendix for an example. Figure 7 , Figure 7 This is a schematic diagram of a single LED strip according to some embodiments of this application. Figure 7 As shown, a single LED strip includes 10 driver modules, with driver modules 1 to 10 cascaded sequentially. Driver modules 1 to 3 are cut out to form a single LED strip a, and driver module 3 in single LED strip a is connected to a first connector to form a LED strip assembly a; similarly, driver modules 7 to 10 are cut out to form a single LED strip c, and driver module 10 in single LED strip c is connected to a first connector to form an LED strip assembly c.

[0072] In some embodiments of this application, various individual light strips with different configurations can be provided, i.e., various standard components with different configurations can be provided. In practical applications, one or more individual light strips with different configurations can be selected according to the needs of the application scenario, and light strips can be used to form light bar assemblies. Among them, individual light strips with different configurations can have at least one of the following differences: (1) The number of driving modules is different. (2) The number of driving modules is the same, but the number of driving modules within the driving modules is different. (3) The number of driving modules and driving components is the same, but the number of LED beads within the driving modules is different.

[0073] In addition, different configurations of individual light strips can be matched with different LED prisms to achieve brightness differences, thereby expanding the application range of LED chips without replacing them.

[0074] The embodiments of the light strip assembly provided in this application will be described below.

[0075] In some embodiments provided in this application, the first connector is a flexible connector. When the number of driving modules k=1 in a single light strip, the first connector is flexibly connected to the first module interface (any one of the module interfaces at both ends of the driving module); when k≥2, the first connector is flexibly connected to the second module interface (the module interface in the final stage driving module that is not connected to other driving modules), and each pair of adjacent driving modules is flexibly connected through the module interface. The connection area formed by the flexible connection is bendable. That is, the first connector and the first module interface, as well as the two driving modules, are both bendable. Based on this, irregular layouts with extremely small bending radii can be realized, such as direct-lit backlights for curved screens, backlights for foldable screens, and irregular structures for automotive lighting groups.

[0076] In this embodiment, the LED beads and driver chip within the drive module are mounted on a flexible printed circuit (FPC). The flexible circuit board is bendable; when bent, it moves the LED beads and driver chip, changing the shape of the entire drive module. This means the drive module's shape is flexible and adjustable, which in turn makes the shape of the entire drive branch flexible and adjustable. Since both drive branches within the drive module are flexible and adjustable, the entire drive module's shape is also flexible and adjustable. Furthermore, when the number of drive modules k ≥ 2 in a single LED strip, each pair of adjacent drive modules is flexibly connected via a module interface, allowing for flexible adjustment of the entire single LED strip's shape. The first connector is also flexibly connected to the second module interface of the final drive module in the single LED strip, further enabling flexible adjustment of the entire LED strip assembly's shape. The finished single LED strip can be stored in rolls. In practical applications, the LED strip assembly can be folded, bent, or otherwise adjusted according to the application scenario's shape requirements.

[0077] In some implementations, the first connector is a connector using a flexible circuit board, and the module interface of the drive module may include encapsulated contacts disposed on the flexible circuit board; that is, the module interface may consist of a flexible circuit board and encapsulated contacts disposed thereon. Based on this, the entire individual LED strip can be fabricated using a flexible circuit board, improving the material consistency of the individual LED strip.

[0078] In some embodiments, when the first connector is flexibly connected to the first module interface, the first connector is mounted on the first module interface to form a flexible connection; when the first connector is flexibly connected to the second module interface, the first connector is mounted on the second module interface to form a flexible connection. In this embodiment, conventional FPC mounting technology can be used to mount the first connector on the first or second module interface, and this embodiment does not specifically limit this.

[0079] In some implementations, the first module interface is provided with a shorting point, which flexibly connects the first connector to the first module interface when the first connector is flexibly connected to the first module interface; similarly, the second module interface is provided with a shorting point, which flexibly connects the first connector to the second module interface when the first connector is flexibly connected to the second module interface. The first connector can be flexibly connected to the shorting point via a jumper wire or a zero-ohm resistor (OR resistor). Based on this implementation, when the LED beads and driver chip within the driver module are mounted on a rigid PCB (Printed Circuit Board), the flexible connection using shorting points can reduce design costs.

[0080] In some embodiments, a reinforcing plate is provided on the side of the flexible circuit board of the driver module opposite to the LED beads and driver chip. The reinforcing plate improves the soldering reliability of the LED beads and driver chip on the flexible circuit board, thereby improving the reliability of the driver module. In this embodiment, conventional reinforcing plate materials can be used, and this embodiment does not specifically limit the material of the reinforcing plate.

[0081] In some application scenarios of the light strip assembly provided according to the embodiments of this application, the light strip assembly can be used as the backlight module of a display screen, or as a flowing light / ambient light. For example, the light strip assembly can be used to construct an in-vehicle ambient light.

[0082] Another aspect of this application provides a backlight module.

[0083] In some embodiments of the backlight module provided in this application, the backlight module may include a drive controller, a plurality of light strip assemblies as described in the foregoing embodiments, and a plurality of second connectors, each of which is connected to the drive controller, which is a backlight controller (BCON). The drive controller is used to control the light emission of the LED beads in the light strip assemblies, and the number of light strip assemblies and second connectors is the same.

[0084] When the number of drive modules k=1 within a single LED strip assembly, the drive module is connected to a second connector via a third module interface. The third module interface is the remaining module interface at both ends of the drive module, excluding the first module interface (i.e., the module interface connected to the first connector in the aforementioned embodiment). For example, see Appendix [link to Appendix]. Figure 2 Module interface 2 is the first module interface, and module interface 1 is the third module interface.

[0085] When the number of driver modules k ≥ 2 within a single LED strip assembly, the primary driver module cascaded within the single LED strip is connected to a second connector via a fourth module interface. No other driver modules are connected to this fourth module interface within the single LED strip. For example, see Appendix [link to appendix]. Figure 1 Drive module 1 is the primary drive module, and module interface 1 of drive module 1 is the fourth module interface.

[0086] In some embodiments, the second connector is a flexible connector, which flexibly connects to the interface of the third or fourth module. Further, in some embodiments, the second connector is a connector using a flexible circuit board. Additionally, in some embodiments, the second connector can be connected to a drive controller via a drive bus.

[0087] Another aspect of this application provides a display device.

[0088] In one embodiment of a display device according to this application, the display device includes the backlight module described in the foregoing embodiments. The screen of the display device may be a curved screen, and the shape of the lamp strip assembly in the backlight module is flexibly adjustable, adapting to the shape of the curved screen through bending or other operations.

[0089] The display device can be a mobile phone, tablet computer, desktop computer, laptop computer, handheld computer, notebook computer, super mobile personal computer, netbook, personal digital assistant, etc., and this embodiment does not specifically limit it. In addition, the display device can also be a television screen.

[0090] The technical solution of this application has been described above with reference to one embodiment shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A light strip assembly, characterized in that, Includes individual LED strips and the first connector; The single light strip includes k driving modules, and each driving module has a module interface at both ends; When k=1, the first connector is connected to the first module interface of the drive module, and the first module interface is any one of the module interfaces of the drive module; When k≥2, k driving modules are cascaded sequentially through their respective module interfaces. The first connector is connected to the second module interface of the final driving module formed by the cascade. The second module interface is not connected to any other driving modules within the single light strip. in, The driving module includes two driving branches, each driving branch includes n driving modules, and each driving module includes multiple LED beads and a driving chip connected to each LED bead. When n=1, the driver chip of the driver module is connected to the module interface at both ends of the driver module through a serial bus; When n≥2, n drive modules are cascaded sequentially via a serial bus, and the drive chips of the first and last drive modules formed by the cascade are connected to the module interfaces at both ends of the drive module via the serial bus.

2. The light strip assembly according to claim 1, characterized in that, The drive modules in the two drive branches correspond one-to-one and are set in a mirror image; Specifically, for the two driver modules that are mirrored, the LED beads in the two driver modules are mirrored one-to-one, and the driver chips in the two driver modules are mirrored.

3. The light strip assembly according to claim 1, characterized in that, The first connector is a flexible connector. When k=1, the first connector is flexibly connected to the first module interface; when k≥2, the first connector is flexibly connected to the second module interface, and each pair of adjacent drive modules is flexibly connected through the module interface. The LED beads and driver chip in the drive module are mounted on a flexible circuit board.

4. The light strip assembly according to claim 3, characterized in that, The flexible connector is a connector using a flexible circuit board; The module interface of the drive module includes encapsulated contacts disposed on the flexible circuit board.

5. The light strip assembly according to claim 4, characterized in that, When the first connector is flexibly connected to the first module interface, the first connector is mounted on the first module interface to form a flexible connection; When the first connector is flexibly connected to the second module interface, the first connector is mounted on the second module interface to form a flexible connection.

6. The light strip assembly according to claim 4, characterized in that, The first module interface is provided with a shorting point. When the first connector is flexibly connected to the first module interface, the first connector is flexibly connected to the shorting point of the first module interface. The second module interface is provided with a shorting point. When the first connector is flexibly connected to the second module interface, the shorting point of the first connector is flexibly connected to the second module interface.

7. The light strip assembly according to claim 6, characterized in that, The first connector is flexibly connected to the shorting point via a jumper wire; Alternatively, the first connector may be flexibly connected to the shorting point via a zero-ohm resistance.

8. The light strip assembly according to claim 3, characterized in that, A reinforcing plate is provided on the side of the flexible circuit board of the drive module that is away from the LED beads and the drive chip.

9. The light strip assembly according to any one of claims 1 to 8, characterized in that, The LED beads are MiniLED beads.

10. A backlight module, characterized in that, The backlight module includes a drive controller, a plurality of light strip assemblies according to any one of claims 1 to 9, and a plurality of second connectors, wherein the second connectors are connected to the drive controller; When the number of driving modules in a single light strip of the light strip assembly is k=1, the driving module is connected to a second connector through a third module interface. The third module interface is the remaining module interface at both ends of the driving module, excluding the first module interface. When the number of driving modules k in a single light strip of the light strip assembly is greater than or equal to 2, the first-level driving module formed by cascading within the single light strip is connected to a second connector through a fourth module interface, and the fourth module interface is not connected to any other driving modules within the single light strip. in, The drive controller is used to control the light emission of the LED beads in the light strip assembly.

11. The backlight module according to claim 10, characterized in that, The second connector is connected to the drive controller via a drive bus.

12. A display device, characterized in that, The display device includes the backlight module according to any one of claims 10 to 11.

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