Light-emitting substrate, backlight module and display device

Abstract

The application provides a light-emitting substrate, a backlight module and a display device. The light-emitting substrate comprises a plurality of light bars arranged along a first direction. The light bar comprises at least one sub-light bar, and the sub-light bar comprises: a substrate, which is a glass substrate; a circuit layer arranged on one side of the substrate; a connecting portion arranged at an end of the substrate and electrically connected with the circuit layer, the material of the connecting portion comprises magnetic particles and a conductive polymer matrix, and the magnetic particles are dispersed in the conductive polymer matrix; and a light-emitting unit arranged on the side of the circuit layer away from the substrate and bonded with the circuit layer through a solder pad. The connecting portion has magnetism. When the light bar comprises at least two sub-light bars, the at least two sub-light bars are connected end to end through the connecting portion to form the light bar. The light-emitting substrate is spliced by glass substrate sub-light bars, breaks through the application of a single light bar, and can meet the application of a large-size, multi-row light-emitting substrate.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a light-emitting substrate, a backlight module, and a display device. Background Technology

[0002] In recent years, liquid crystal display (LCD) panels have become the mainstream display product due to their advantages such as low radiation, low power consumption, low space occupation, and lightweight and aesthetically pleasing design. As the industry continues to expand, competition is also intensifying.

[0003] With the continuous development of Liquid Crystal Display (LCD) technology, the manufacturing process of glass-based light strips has also become increasingly mature. However, at present, glass-based light strips are mainly limited to the application of single light strips and cannot meet the application requirements of large-size, multi-row light-emitting substrates. Summary of the Invention

[0004] This application provides a light-emitting substrate, a backlight module, and a display device, aiming to solve the problem that glass-based light strips in the prior art cannot meet the application requirements of large-size, multi-row light-emitting substrates.

[0005] To address the aforementioned technical problems, the first technical solution provided in this application is: to provide a light-emitting substrate, the light-emitting substrate comprising a plurality of light strips arranged along a first direction, wherein each light strip includes at least one sub-light strip, the sub-light strip comprising: The substrate is a glass residue substrate; A circuit layer is disposed on one side of the substrate; A connecting portion is disposed at the end of the substrate, is on the same layer as the circuit layer and is electrically connected; the connecting portion is magnetic; wherein, when the light strip includes at least two sub-light strips, the at least two sub-light strips are connected end to end through the connecting portion to form a light strip; The light-emitting unit is located on the side of the circuit layer away from the substrate and is bonded to the circuit layer via pads.

[0006] In some embodiments, the material of the connector includes magnetic particles and a conductive polymer matrix, wherein the magnetic particles are dispersed in the conductive polymer matrix.

[0007] In some embodiments, the light-emitting substrate further includes: The track frame includes a first border, a second border, and a third border that are connected end to end in sequence; wherein the first border and the third border are positioned opposite each other, and the second border is located between the first border and the third border; The track lock frame is located between the first and third side frames, opposite to the second side frame, and detachably connected to the ends of the first and third side frames; The light strip is set in the track frame, and its two ends abut against the first and third side frames respectively.

[0008] In some embodiments, both the first and third frames are through slots, and the two ends of the light strip are respectively disposed in the slots of the first and third frames. The track lock frame is a through groove, and the edge of the light strip near the track lock frame is set in the groove of the track lock frame; The track lock frame has locking parts at opposite ends, and the two locking parts are respectively locked to the first frame and the third frame.

[0009] In some embodiments, the light-emitting substrate further includes: The first connecting strip is disposed in the groove of the first frame and abuts against the light strip. The end of each light strip contacts the first connecting strip through the connecting part to form an electrical connection. The second connecting strip is disposed in the groove of the third frame and abuts against the light strip. The end of each light strip contacts the second connecting strip through the connecting part to form an electrical connection. The first and second connecting strips are made of conductive material.

[0010] In some embodiments, a first connecting electrode is provided on the side of the first connecting strip away from the light strip, and the first connecting electrode is columnar and penetrates the side wall of the first frame. The second connecting strip has a second connecting electrode on the side opposite to the light strip. The second connecting electrode is columnar and penetrates the third frame. The first and second connecting electrodes are used for connection to a power source.

[0011] In some embodiments, a first guide groove is provided on the side wall of the first frame near the first connecting strip. The first guide groove penetrates the side wall of the first frame and extends from the end of the first frame away from the second frame to a position corresponding to the first connecting electrode, for guiding and limiting the first connecting electrode when assembling the first connecting strip. A second guide groove is provided on the side wall of the third frame near the second connecting strip. The second guide groove penetrates the side wall of the third frame and extends from the end of the third frame away from the second frame to the position corresponding to the second connecting electrode. It is used to guide and limit the second connecting electrode when assembling the second connecting strip.

[0012] In some embodiments, the first border and the third border are both arc-shaped protrusions in the opposite direction to the light emission direction, and the curvature is the same. Both the first connecting strip and the second connecting strip are arc-shaped, and the arc is the same as that of the first frame. On the side opposite to the first connecting strip and the second connecting strip, there are multiple first positioning grooves that correspond one-to-one with the light strips. On the side opposite to the first connecting strip and the second connecting strip, there are multiple second positioning grooves that correspond one-to-one with the light strips.

[0013] To address the aforementioned technical problems, the second technical solution provided in this application is: to provide a backlight module. The backlight module includes: Back panel; A light-emitting substrate is disposed in the back plate, and the light-emitting substrate is the light-emitting substrate provided by the above technical solution.

[0014] To address the aforementioned technical problems, the third technical solution provided in this application is: to provide a display device. The display device includes: Display panel, used to display images; A backlight module is disposed opposite to the display panel and is used to provide backlight to the display panel; the backlight module is the backlight module provided by the above technical solution.

[0015] The beneficial effects of this application are as follows: Unlike existing technologies, this application provides a light-emitting substrate, a backlight module, and a display device. The light-emitting substrate includes multiple light strips arranged along a first direction, each light strip including at least one sub-light strip. By using glass scrap substrate as the substrate for the sub-light strips, the scrap material of the large glass sheet is fully utilized, improving the overall utilization rate of the glass substrate and reducing raw material costs. By setting the connecting part as a magnetic structure on the same layer as the circuit layer and located at the end of the light strip, the sub-light strips can be connected end to end by magnetic attraction, thereby simplifying the mechanical structure of light strip splicing and improving the convenience and positioning accuracy of splicing. At the same time, by making the magnetic connecting part electrically connected to the circuit layer to undertake the conductivity function, the integration of mechanical fixation and electrical connection is realized, so that the sub-light strips can form a stable current path without additional complex connectors during splicing. This modular splicing method allows individual sub-light strips to be manufactured and tested independently. If a defective product occurs, only the individual sub-light strip needs to be replaced, improving the overall yield and maintainability of the light strips. Meanwhile, since the sub-strips are custom-made from glass scraps, their dimensional flexibility is high, which is beneficial for adapting to large-size display applications of different sizes and arrangements, expanding the application range of glass-based strips in the MiniLED and Micro-LED fields. By adopting a composite material structure in which magnetic particles are dispersed in a conductive polymer matrix, the connection part can simultaneously possess strong magnetic attraction and good conductivity, achieving a deep integration of mechanical fixing function and electrical connection function. At the same time, this composite material has good flexibility and processability, which can adapt to the end processing of glass substrates of different shapes and sizes, improving design flexibility and adaptability. Attached Figure Description

[0016] 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 accompanying 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 any creative effort.

[0017] Figure 1 This is a schematic diagram of the planar structure of the light-emitting substrate provided in the first embodiment of this application; Figure 2 This is a schematic diagram of the structure of a large glass plate provided in one embodiment of this application; Figure 3 This is a schematic diagram of the cutting structure of a large glass plate provided in one embodiment of this application; Figure 4 This is a schematic diagram of the cutting structure of a large glass plate provided in another embodiment of this application; Figure 5 This is a cross-sectional structural schematic diagram of a sub-light strip provided in an embodiment of this application; Figure 6 This is a schematic diagram of the disassembled structure of the light-emitting substrate provided in the second embodiment of this application; Figure 7 This is a three-dimensional structural diagram of a track frame provided in an embodiment of this application; Figure 8 This is a three-dimensional structural diagram of a track lock frame provided in an embodiment of this application; Figure 9 This is a three-dimensional structural diagram of the track lock frame and connecting strip provided in an embodiment of this application; Figure 10 This is a schematic diagram of the track frame provided in another embodiment of this application; Figure 11 This is a schematic diagram of the structure of a connecting strip provided in another embodiment of this application; Figure 12 This is a schematic diagram of the disassembled structure of a backlight module provided in one embodiment of this application; Figure 13 This is a schematic diagram of the structure of a backlight module provided in one embodiment of this application; Figure 14 This is a schematic diagram of the structure of a display device provided in an embodiment of this application.

[0018] Figure label: 100. Light-emitting substrate; 10. Lamp strip; 11. Sub-lamp strip; 111. Substrate; 112. Circuit layer; 113. Connector; 114. Light-emitting unit; 115. Pad; 1161. First protective layer; 1162. Second protective layer; 1171. First adhesive layer; 1172. Second adhesive layer; 1173. Third adhesive layer; 20. Track frame; 21. First frame; 211. First guide groove; 22. Second frame; 23. Third frame; 231. Second guide groove; 30. Track locking frame; 31. Snap-fit 41. First connecting strip; 411. First connecting electrode; 412. First positioning groove; 42. Second connecting strip; 422. Second positioning groove; 50. Back plate; 51. Bottom plate; 52. Side plate; 61. Adhesive component; 62. Support component; 70. Reflective sheet; 71. Hollowed-out part; 81. Optical film; 82. Middle frame; 200. Large glass plate; 201. Substrate area; 202. Residual material area; 300. Backlight module; 400. Display panel; 1000. Display device; A. First direction; B. Second direction. Detailed Implementation

[0019] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0020] In the following description, specific details such as particular system architectures, interfaces, and technologies are presented for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of this application.

[0021] 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 the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] The terms "first," "second," and "third" in this application are 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," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Please see Figures 1 to 5 , Figure 1 This is a schematic diagram of the planar structure of the light-emitting substrate provided in the first embodiment of this application. Figure 2 This is a schematic diagram of the structure of a large glass plate provided in one embodiment of this application; Figure 3 This is a schematic diagram of the cutting structure of a large glass plate according to an embodiment of this application. Figure 4 This is a schematic diagram of the cutting structure of a large glass plate according to another embodiment of this application. Figure 5 This is a cross-sectional structural schematic diagram of a sub-light strip provided in an embodiment of this application.

[0026] In this embodiment, a light-emitting substrate 100 is provided, which includes a plurality of light strips 10 arranged along a first direction A. Each light strip 10 includes at least one sub-light strip 11, and the sub-light strip 11 includes: Substrate 111 is a glass residue substrate; A circuit layer 112 is disposed on one side of the substrate 111; A connecting portion 113 is disposed at the end of the substrate 111, is on the same layer as the circuit layer 112 and is electrically connected; the connecting portion 113 is magnetic; wherein, when the light strip 10 includes at least two sub-light strips 11, the at least two sub-light strips 11 are connected end to end through the connecting portion 113 to form the light strip 10. The light-emitting unit 114 is disposed on the side of the circuit layer 112 away from the substrate 111 and is bonded to the circuit layer 112 through the pad 115.

[0027] like Figure 1 As shown, the first direction A and the second direction B are defined to be perpendicular to each other. Multiple light strips 10 are arranged along the first direction A, and the length direction of the light strips 10 is parallel to the second direction B. The light strip 10 includes at least one sub-light strip 11. When the light strip 10 includes multiple (at least two) sub-light strips 11, the multiple sub-light strips 11 are connected end to end to form a light strip 10.

[0028] like Figure 1 and Figure 2 As shown, the substrate 111 of the sub-lamp strip 11 is a glass scrap substrate. That is, the leftover material after the substrate of the display panel 400 is made from the glass plate 200 is used as the substrate 111 of the sub-lamp strip 11. Typically, the upper and lower substrates of the display panel 400, namely the array substrate and the color filter substrate, are prepared on the glass plate 200. After the upper and lower substrates are prepared, the remaining glass scraps do not meet the preparation requirements of the upper and lower substrates due to their shape and size, resulting in a large amount of waste. That is, the glass plate 200 includes a substrate region 201 and a scrap region 202; the substrate region 201 is the region used to prepare the upper and lower substrates, occupying the main area of ​​the glass plate 200; the scrap region 202 is located around the substrate region 201, which is the remaining area outside the substrate region 201. In this embodiment, the scraps left over after the glass plate 200 is used to make the array substrate or color filter substrate are used to make the light strip 10. This not only makes use of waste materials, but also makes full use of the scraps of the glass plate 200, improves the overall utilization rate of the glass substrate, and reduces the cost of raw materials.

[0029] For example, such as Figure 2As shown, in this embodiment, the residual material area 202 of the large glass plate 200 is used for spatial design, and the glass residual material is uniformly cut into substrates 111 with a length of L1 according to the spatial design scheme. In some embodiments, the residual material area 202 of the large glass plate 200 can be further spatially designed to further improve the utilization rate of the glass residual material. Through reasonable spatial size design, at least two length sizes of substrates 111 are designed in the residual material area 202. Through reasonable size design, the lengths of substrates 111 of different sizes are made to be integer multiples, which not only further improves the utilization rate of the residual material, but also facilitates splicing to form light strips 10 of the same size, and makes it easier to splice to form a light-emitting substrate 100 with regular size. Figure 3 As shown, in this embodiment, two substrates 111 of different lengths are designed: one substrate 111 has a length of L1, and the other substrate 111 has a length of L2, with the same width for both substrates 111; where L1 = 2·L2. Two sub-strips 11 of length L2 can be joined end-to-end to form a light strip 10 of length L1. Only one sub-strip 11 of length L1 is needed to form a light strip 10. Multiple light strips 10 of length L1 are then arranged along a first direction to form a light-emitting substrate 100 of the required size.

[0030] Will Figure 4 Two sizes of substrates 111 cut from the middle are used to make two sizes of sub-light strips 11, which are then spliced ​​together to form a shape like... Figure 1 The light-emitting substrate 100 is shown. Among them, the sub-strip 11 with length L1 and width W1 conforms to the dimensions of the light strip 10 and can be directly spliced ​​as the light strip 10; the relationship between the dimensions of the sub-strip 11 with length L2 and width W2 and the sub-strip 11 with length L1 is as follows: L1 = 2·L2; W1 = W2.

[0031] Therefore, two sub-light strips 11 of length L2 can be spliced ​​end to end to form a light strip 10 of length L1. Further, the distance between adjacent light-emitting units 114 on the sub-light strips 11 is P1. In the spliced ​​light strip 10, for the sub-light strips 11 connected end to end, the distance from the edge of the light-emitting unit 114 on one sub-light strip 11 closest to the other sub-light strip 11 is D1, and the distance on the other sub-light strip 11 is D2. P1 is set to D1 + D2. This setting ensures that the distance between adjacent light-emitting units 114 on the spliced ​​light strip 10 is equal, thereby ensuring more uniform light output from the light-emitting substrate 100, thus guaranteeing the light output and display effects.

[0032] like Figure 5As shown, the circuit layer 112 is disposed on one side of the substrate 111 to carry the driving current and form a fine circuit network. Specifically, it can be made of a conductor material with good conductivity and thermal conductivity, such as copper, which can reduce the circuit load and assist in heat dissipation.

[0033] The connecting portion 113 is disposed at the end of the substrate 111, and is on the same plane as the circuit layer 112, achieving electrical connection through physical connection. Specifically, the connecting portion 113 is magnetic, and can be made of a conductive composite material filled with ferromagnetic metal particles, such as iron, nickel, cobalt, etc., added to a conductive polymer matrix, so that the connecting portion 113 can both transmit electrical signals and generate magnetic attraction. Utilizing the magnetism of the connecting portion 113, multiple sub-light strips 11 can be attracted end to end and arranged closely. Through the principle of attraction between their own opposite magnetic poles by an externally applied magnetic field, the sub-light strips 11 are physically fixed and electrically connected, thereby splicing them into a complete light strip 10, and then forming a large-size light-emitting substrate 100. For example, glass scraps of different sizes can be cut into sub-light strips 11 of specific lengths, and spliced ​​together by mutual attraction of the magnetic connecting portions 113 at both ends to form an array of light strips 10 of the required length for the display module.

[0034] The light-emitting unit 114 can be a Mini-LED or Micro-LED lamp bead, which is bonded to the circuit layer 112 through the pad 115 to form a complete current path. Specifically, the PN junction of the light-emitting unit 114 and the driving circuit are connected through the pad 115 to form a current path, thereby driving the light-emitting unit 114 to emit light. Specifically, the pad 115 can be made of copper-based alloy material.

[0035] In this embodiment, by using glass scrap substrate as substrate 111, the scraps of the large glass panel 200 are fully utilized, improving the overall utilization rate of the glass substrate and reducing raw material costs. By setting the connecting part 113 as a magnetic structure on the same layer, the sub-light strips 11 can be connected end to end by magnetic attraction, thereby simplifying the mechanical structure of the light strip 10 splicing and improving the convenience and positioning accuracy of splicing. The magnetic connecting part 113 also undertakes the function of conducting electricity, realizing the integration of mechanical fixation and electrical connection, so that the sub-light strips 11 can form a stable current path without additional complex connectors during the splicing process. This modular splicing method allows each sub-light strip 11 to be manufactured and tested independently. If a defective product is found, only the individual sub-light strip 11 needs to be replaced, improving the overall yield and maintainability of the light strip 10. At the same time, since the sub-light strips 11 are customized based on glass scrap, their size flexibility is high, which is conducive to adapting to large-size display applications of different sizes and arrangements, expanding the application range of glass-based light strips 10 in the Mini-LED and Micro-LED fields.

[0036] Furthermore, such as Figure 4As shown, the sub-LED strip 11 includes a first protective layer 1161, a first adhesive layer 1171, a second adhesive layer 1172, a third adhesive layer 1173, and a second protective layer 1162. The first protective layer 1161 is bonded to the side of the substrate 111 away from the circuit layer 112 through the first adhesive layer 1171. The second adhesive layer 1172 is disposed between the substrate 111 and the circuit layer 112 for bonding the substrate 111 and the circuit layer 112. The second protective layer 1162 is bonded to the side of the circuit layer 112 away from the substrate 111 through the third adhesive layer 1173. The pad 115 penetrates the second protective layer 1162 and the third adhesive layer 1173 and is connected to the circuit layer 112. The first adhesive layer 1171, the second adhesive layer 1172, and the third adhesive layer 1173 can be integrally extruded and formed. Then, according to the spatial design scheme of the glass residue described above, it is physically cut. Finally, the notches at both ends of the sub-light strip 11 are filled with the aforementioned magnetic conductive composite material to form the connecting part 113. Alternatively, in other embodiments, it can also be integrally formed by 3D printing layer by layer on the substrate 111. Finally, the light-emitting unit 114 is bonded to the circuit layer 112 to form the sub-light strip 11.

[0037] In some embodiments, the material of the connector 113 includes magnetic particles and a conductive polymer matrix, wherein the magnetic particles are dispersed in the conductive polymer matrix.

[0038] Specifically, the connecting portion 113 is composed of a conductive polymer matrix and magnetic particles dispersed therein. The conductive polymer matrix, as the continuous phase, provides the overall molding base, regulates electrical insulation performance, and provides mechanical support. It can be polyimide, acrylic resin, or other polymer materials with good processability and adhesion. The magnetic particles, as the dispersed phase, are uniformly or regionally distributed within the polymer matrix. These magnetic particles are typically ferromagnetic particles of iron, nickel, cobalt, or their alloys. This composite material design allows the connecting portion 113 to possess both excellent magnetic and conductive properties. In practical applications, the magnetic particles generate magnetic interaction forces, enabling the connecting portions 113 of adjacent sub-strips 11 to attract each other and fit tightly together, achieving mechanical self-alignment and fixation. Simultaneously, the conductive polymer matrix provides electron transport channels at the conductive network or interface formed by the magnetic particles, ensuring that current can be smoothly transmitted from one sub-strip 11 to another through the connecting portion 113. In some embodiments, ferromagnetic nanoparticles can be uniformly mixed into a liquid polyimide precursor, coated onto the end of a glass substrate, and cured to form a solid magnetic connection 113; or magnetic microparticles can be dispersed in a conductive polymer using a solution blending method and formed on the end of the substrate by screen printing or inkjet printing.

[0039] In this embodiment, by employing a composite material structure in which magnetic particles are dispersed within a conductive polymer matrix, the connecting part 113 simultaneously possesses strong magnetic attraction and good conductivity, achieving a deep integration of mechanical fixing and electrical connection functions. The magnetic attraction provided by the magnetic particles allows the sub-light strips 11 to automatically align and fit tightly during splicing, improving the positioning accuracy and connection stability of the splicing and avoiding the risk of poor contact or open circuit due to loose splicing. The conductive polymer matrix not only encapsulates and fixes the magnetic particles but also serves as part of the conductive path, ensuring efficient transmission of electrical signals within the connecting part 113 and reducing contact resistance. This one-piece molded material structure simplifies the manufacturing process of the connecting part 113, eliminating the need for additional metal welding or complex mechanical snap-fit ​​structures, which helps reduce production costs and improve production efficiency. Simultaneously, the composite material has good flexibility and processability, enabling it to adapt to the end processing of glass substrates of different shapes and sizes, improving design flexibility and adaptability.

[0040] Please see Figure 6 , Figure 6 This is a disassembled structural diagram of the light-emitting substrate 100 provided in the second embodiment of this application. In this embodiment, the light-emitting substrate 100 further includes: The track frame 20 includes a first border 21, a second border 22, and a third border 23 connected end to end in sequence; wherein the first border 21 and the third border 23 are arranged opposite to each other, and the second border 22 is located between the first border 21 and the third border 23. The track lock frame 30 is disposed between the first frame 21 and the third frame 23, opposite to the second frame 22, and detachably connected to the ends of the first frame 21 and the third frame 23. The light strip 10 is disposed in the track frame 20, and the two ends of the light strip 10 abut against the first frame 21 and the third frame 23 respectively.

[0041] The track frame 20 is used to accommodate and fix the light strip 10. Its structure consists of a first frame 21, a second frame 22, and a third frame 23 connected end to end to form a semi-closed frame structure. The first frame 21 and the third frame 23 are arranged opposite each other to form the main space for accommodating the light strip 10. The second frame 22 is located between the two, serving as support and separation, and enhancing the rigidity of the overall structure. The track locking frame 30 is located between the first frame 21 and the third frame 23, and is opposite to the second frame 22. Its two ends are detachably connected to the ends of the first frame 21 and the third frame 23 by means of buckles, screws, or magnets. This detachable design allows the track locking frame 30 to cover the opening of the track frame 20 like a cover, clamping and fixing the light strip 10 together with the track frame 20.

[0042] The light strip 10 is placed in the track frame 20, with its two ends abutting against the first frame 21 and the third frame 23 respectively, limiting the length of the light strip 10 and ensuring its fixed position in the longitudinal direction to prevent lateral or longitudinal displacement. Specifically, during assembly, the sub-light strips 11 with magnetic connecting parts 113 are first magnetically joined to form a complete light strip 10. Then, the light strip 10 is placed in the track frame 20, with its two ends abutting against the first frame 21 and the third frame 23. Finally, the track locking frame 30 is closed and locked, completing the final encapsulation for mechanical fixation and electrical conduction. The track frame 20 and the track locking frame 30 can be made of PPS material of different sizes, or an aluminum alloy frame with insulating pads can be used, as long as the clamping and fixing function is achieved.

[0043] In this embodiment, the cooperative structure of the track frame 20 and the track locking frame 30 provides stable mechanical support for the light strip 10 after assembly, preventing displacement or detachment of the light strip 10 due to vibration or thermal expansion and contraction, thus improving the reliability of the display device 1000. The first frame 21 and the third frame 23 abut and restrict the two ends of the light strip 10, making the positioning of the light strip 10 in the length direction more accurate, which helps to ensure uniform gaps between spliced ​​light strips 10 and improves the uniformity of light output. The detachable connection design of the track locking frame 30 with the first frame 21 and the third frame 23 makes the maintenance and replacement of the light strip 10 convenient. The track frame 20 can be opened for inspection without damaging the overall structure, improving the maintainability of the product. The setting of the second frame 22 increases the overall structural strength of the track frame 20, making the clamping force distribution more uniform and avoiding the risk of glass substrate breakage caused by local stress concentration.

[0044] Please see Figure 7 and Figure 8 , Figure 7 This is a three-dimensional structural schematic diagram of the track frame 20 provided in one embodiment of this application. Figure 8 This is a three-dimensional structural diagram of the track lock frame 30 provided in one embodiment of this application. In some embodiments, the first frame 21 and the third frame 23 are both through slots, and the two ends of the light strip 10 are respectively disposed in the slots of the first frame 21 and the third frame 23; the track lock frame 30 is a through slot, and the edge portion of the light strip 10 near the track lock frame 30 is disposed in the slot of the track lock frame 30; the opposite ends of the track lock frame 30 are provided with snap-fit ​​portions 31, and the two snap-fit ​​portions 31 are respectively snap-fitted into the first frame 21 and the third frame 23.

[0045] The aforementioned first frame 21 and third frame 23 are configured as through-slot structures, with their cross-sections being open slots rather than closed solid walls. The two ends of the light strip 10 are embedded into the slots of the first frame 21 and the third frame 23. This interlocking structure restricts the light strip 10 in the width direction of the light panel, preventing it from moving laterally; it can also be understood that this interlocking structure restricts the light strip 10 in its length and thickness directions, making the positions of each light strip 10 relatively fixed.

[0046] The track lock frame 30 is also configured with a through-slot structure. When the track lock frame 30 covers the track frame 20, the edge of the light strip 10 near the track lock frame 30 (i.e., the side of the light strip 10 near the track lock frame 30) is embedded into the slot of the track lock frame 30. Specifically, the cross-section of the track lock frame 30 is identical in shape and size to the U-shaped slot of the cross-section of the track frame 20, so as to form a unified inner cavity. Furthermore, the track lock frame 30 has snap-fit ​​parts 31 at opposite ends. These snap-fit ​​parts 31 can be protruding buckles, barbs, or threaded post structures, which snap onto the ends or side walls of the first frame 21 and the third frame 23, respectively. This snap-fit ​​method enables the track lock frame 30 to be quickly locked to the main body of the track frame 20. The snap-fit ​​parts 31 can be made of elastic plastic material, utilizing their elastic deformation to achieve snap-fit ​​and fixation. For example, the snap-fit ​​parts 31 can be designed as L-shaped hook structures to hook onto the outer edges of the first frame 21 and the third frame 23. Alternatively, the snap-fit ​​part 31 can be configured as a snap-fit ​​strip with the same width as the slot of the track frame 20, so as to achieve interlocking by pressing or twisting into the slot of the track frame 20.

[0047] During assembly, after placing the assembled complete light strip 10 into the track frame 20, align and position the track locking frame 30 so that the edge of the light strip 10 falls into the groove of the track locking frame 30. Then, press both ends of the track locking frame 30 to make the snap-fit ​​part 31 snap into the corresponding position of the first frame 21 and the third frame 23, completing the overall encapsulation. The bottom of the grooves of the first frame 21 and the third frame 23 can be designed with anti-slip textures, or positioning bosses can be set in the grooves to further fix the position of the light strip 10. Magnetic attraction can also be used to assist the snap-fit, that is, magnets can be set in the snap-fit ​​part 31 or the end of the frame to increase the locking force and facilitate disassembly.

[0048] Specifically, the track frame 20 and the track lock frame 30 can be integrally injection molded from insulating, high heat dissipation, and high temperature resistant materials such as PPS engineering plastic. Their cross-section is U-shaped, and the interior is coated with thermally conductive silicone grease to assist in heat dissipation.

[0049] In this embodiment, by configuring the first frame 21, the third frame 23, and the track locking frame 30 as through-slot structures, and by fitting the two ends and edges of the light strip 10 into the slots, the light strip 10 achieves multi-point mechanical restraint in the three dimensions of width, length, and thickness. This greatly improves the positional stability of the light strip 10 within the track and prevents displacement of the light strip 10 due to vibration or thermal shock. The snap-fit ​​parts 31 at both ends of the track locking frame 30 directly snap-fit ​​with the first frame 21 and the third frame 23, eliminating the need for additional fasteners or complex locking mechanisms, simplifying the assembly steps, and improving production efficiency. The design of the snap-fit ​​parts 31 allows the track locking frame 30 to apply uniform downward pressure, tightly pressing the light strip 10 against the bottom of the track frame 20. This helps ensure close contact between the light strip 10 and the inner wall of the slot or the heat dissipation structure of the track frame 20, improving heat conduction efficiency and the reliability of electrical connections. The through-slot structure design also reduces the exposed side portion of the light strip 10, which helps reduce dust accumulation and improves the cleanliness and service life of the display device 1000. The flexible fit of the snap-fit ​​part 31 makes the assembly process more tolerant, facilitates the operation of automated assembly equipment, and reduces assembly difficulty and defect rate. At the same time, the track frame 20 and track lock frame 30 are made of insulating and heat-dissipating material, which helps to quickly dissipate the heat generated by the light strip 10 during operation, prevents heat accumulation from affecting the lifespan and display effect of the light-emitting unit 114, and ensures electrical safety.

[0050] Please see Figure 9 , Figure 9 This is a three-dimensional structural diagram of the track lock frame 30 and connecting strip provided in one embodiment of this application. In some embodiments, the light-emitting substrate 100 further includes: a first connecting strip 41, disposed in a groove of the first frame 21 and abutting against the light strip 10, wherein the end of each light strip 10 contacts the first connecting strip 41 through a connecting portion 113 to form an electrical connection; and a second connecting strip 42, disposed in a groove of the third frame 23 and abutting against the light strip 10, wherein the end of each light strip 10 contacts the second connecting strip 42 through a connecting portion 113 to form an electrical connection. The first connecting strip 41 and the second connecting strip 42 are made of conductive material.

[0051] The first connecting strip 41 and the second connecting strip 42 serve as electrical conductive elements of the light strip 10, and are respectively embedded in the slots of the first frame 21 and the third frame 23. Here, the slot refers to the cavity space inside the frame used to accommodate the end of the light strip 10 and the connecting structure. The first connecting strip 41 extends along the slot of the first frame 21 and maintains abutment with the end of the light strip 10 located on that side. Abutment means that the surfaces of the two are tightly fitted, with no gap or only a very small contact resistance gap in between. The connecting portion 113 at the end of the light strip 10 can serve as a conductive contact. When the light strip 10 is inserted into the frame slot, the connecting portion 113 makes physical contact with the corresponding contact surface of the first connecting strip 41, thereby forming a current path. Similarly, the second connecting strip 42 is disposed in the slot of the third frame 23, abutting with the connecting portion 113 at the end of the light strip 10 on the other side to form an electrical connection. The first connecting strip 41 and the second connecting strip 42 are made of conductive materials, such as copper, aluminum, silver, or conductive alloys, to ensure low resistance and high current carrying capacity.

[0052] Furthermore, the first connecting strip 41 and the second connecting strip 42 can be elastic strip structures, such as spring sheet-like or wavy structures, to generate elastic pre-tightening force when the lamp strip 10 is inserted, ensuring stable contact pressure and compensating for manufacturing tolerances. Conductive adhesive or conductive foam can also be used as the medium between the connecting part 113 and the connecting strip, serving both as a conductor and as a buffer and sealant.

[0053] Specifically, when multiple glass-based light strips 10 are assembled with the track frame 20 and track locking frame 30 to form a light panel, the first connecting strip 41 and the second connecting strip 42 are respectively connected to the positive and negative terminals of the power supply or the signal line through the track frame 20 or the external wiring structure. Current is input from the outside, passes through the first connecting strip 41 or the second connecting strip 42, enters the connecting part 113 at the end of the light strip 10 through the contact point, and then flows through the circuit layer 112 and the light-emitting unit 114 inside the light strip 10 to achieve lighting. It is understood that, exemplarily, the connecting portion 113, which is electrically connected to the first connecting strip 41, is electrically connected to the anode trace in the circuit layer 112 of the lamp strip 10, and the anode trace is electrically connected to the anode of the light-emitting unit 114; the connecting portion 113, which is electrically connected to the second connecting strip 42, is electrically connected to the cathode trace in the circuit layer 112 of the lamp strip 10, and the cathode trace is electrically connected to the cathode of the light-emitting unit 114; the first connecting strip 41 is connected to the positive terminal of an external power supply, and the second connecting strip 42 is connected to the negative terminal of an external power supply, thereby transmitting anode and cathode signals to the light-emitting unit 114 through the first connecting strip 41 and the second connecting strip 42 to drive the light-emitting unit 114 to emit light. In some embodiments, the cross-section of the connecting strip can be designed to be U-shaped or C-shaped to wrap around the connecting portion 113 at the end of the lamp strip 10, increasing the contact area and stability. Alternatively, the connecting strip can be designed to be insulated from the frame groove wall, conducting only through the end of the lamp strip 10 to prevent short circuits.

[0054] In this embodiment, by setting the first connecting strip 41 and the second connecting strip 42 in the grooves of the first frame 21 and the third frame 23, and abutting them against the connecting portion 113 at the end of the lamp strip 10, the electrical connection between the lamp strips 10 no longer relies on fragile lead wire welding or complex wiring connections, but is achieved through direct metal contact, thereby improving the mechanical strength and reliability of the electrical connection. The connecting strip made of conductive material can provide a low-impedance current transmission path, which helps to reduce heat loss caused by contact resistance and improve luminous efficiency. The abutting fit structure utilizes the limiting effect of the frame groove to ensure that the connecting strip and the end of the lamp strip 10 always maintain a stable contact pressure, preventing open circuits or poor contact problems caused by loose contact even under high and low temperature cycling or vibration environments. This structure simplifies the processing technology of the end of the lamp strip 10, eliminating the need for complex welding operations on the end face of the lamp strip 10, reducing production difficulty and cost. At the same time, integrating the electrical connection into the frame groove makes the overall structure more compact, which helps to reduce the overall thickness and volume of the lamp board and improve space utilization. The flexible abutment design can adapt to the slight tolerance of the LED strip length, ensuring consistency in batch assembly and improving yield.

[0055] In some embodiments, the first connecting strip 41 has a first connecting electrode 411 on the side away from the light strip 10. The first connecting electrode 411 is columnar and penetrates the side wall of the first frame 21. The second connecting strip 42 has a second connecting electrode (not shown) on the side away from the light strip 10. The second connecting electrode is columnar and penetrates the third frame 23. The first connecting electrode 411 and the second connecting electrode are used to connect to the power supply.

[0056] The first connecting electrode 411 and the second connecting electrode serve as electrical interfaces between the external power supply and the internal connecting strip, and are respectively located on the side of the first connecting strip 41 and the second connecting strip 42 away from the light strip 10. The first connecting electrode 411 has a columnar structure, with its axis perpendicular to or inclined through the side wall of the first frame 21, and protruding from the outer surface of the first frame 21. Penetrating through the side wall of the first frame 21 means that the first connecting electrode 411 passes through the frame body, achieving physical penetration and electrical lead-out from the connecting strip to the external space. Similarly, the second connecting electrode is also columnar and penetrates through the side wall of the third frame 23. This through-type structure allows the electrodes to be directly exposed on the outside of the frame, facilitating docking with external power plugs, cable sockets, or test probes.

[0057] Specifically, the first connecting electrode 411 and the second connecting electrode can be made of copper, copper alloy, or gold-plated metal to ensure good conductivity and corrosion resistance. The outer diameter of the electrode penetration portion can be slightly smaller than the through hole diameter, and insulating sealant can be filled in the gap to prevent external moisture or dust from entering the frame and affecting the circuit, while ensuring electrical isolation. After the glass-based light strip 10 is assembled, the positive and negative pins of the external power supply can be directly inserted into or soldered to the extended first connecting electrode 411 and the second connecting electrode. Current flows through the electrodes into the first connecting strip 41 or the second connecting strip 42, and then distributes to each light strip 10.

[0058] Furthermore, the columnar ends of the electrodes can be provided with threads, snaps, or welding pads to accommodate different external connection methods. Alternatively, after the first connecting electrode 411 and the second connecting electrode penetrate the frame, their outer ends are equipped with insulating sleeves, exposing only the conductive contact points to improve operational safety.

[0059] In this embodiment, by designing the first connecting electrode 411 and the second connecting electrode as columnar shapes that penetrate the sidewalls of the first frame 21 and the third frame 23, the electrical connection interface is directly exposed to the outside of the device, avoiding the need to reserve complex wiring space inside the frame. This simplifies the wiring logic of the overall structure and improves space utilization. The columnar through-hole structure provides robust mechanical support, allowing external power connectors to be firmly fixed to the electrodes, preventing loosening due to plugging, unplugging, or vibration, and further improving the reliability of the electrical connection. Integrating the electrodes directly onto the connecting strip reduces the number of additional connectors, ribbon cables, or adapter boards, lowering material costs and assembly processes, and improving production efficiency. The through-hole design ensures fixed and uniform wiring positions, facilitating the positioning and operation of automated assembly equipment, and improving assembly consistency and accuracy. The large contact area of ​​the columnar electrodes helps reduce contact resistance, improve current transmission efficiency, and reduce heat generation, thereby ensuring the stability and lifespan of the display device 1000 under high-power operation.

[0060] Furthermore, in some embodiments, a first guide groove 211 is formed on the side wall of the first frame 21 near the first connecting strip 41. The first guide groove 211 penetrates the side wall of the first frame 21 and extends from the end of the first frame 21 away from the second frame 22 to a position corresponding to the first connecting electrode 411, for guiding and limiting the first connecting electrode 411 during assembly of the first connecting strip 41. A second guide groove 231 is formed on the side wall of the third frame 23 near the second connecting strip 42. The second guide groove 231 penetrates the side wall of the third frame 23 and extends from the end of the third frame 23 away from the second frame 22 to a position corresponding to the second connecting electrode, for guiding and limiting the second connecting electrode during assembly of the second connecting strip 42.

[0061] The first guide groove 211 is formed on the side wall of the first frame 21, that is, the side wall near the installation position of the first connecting strip 41, and the first guide groove 211 penetrates through the side wall of the first frame 21. Along the length of the first frame 21, the first guide groove 211 is elongated or grooved, and its extension direction is parallel to the extension direction of the first connecting strip 41. The entrance end of the first guide groove 211 is located at the end of the first frame 21 away from the second frame 22, and extends along the entrance end to the position corresponding to the horizontal projection of the first connecting electrode 411, that is, the position corresponding to the point where the first connecting electrode 411 exits from the side wall of the first frame 21. During assembly, the first connecting strip 41 slides into the first frame 21 along the extension direction of the first guide groove 211, and the first connecting electrode 411 moves along the first guide groove 211 until it is completely inside the first frame 21 and connected or fixed to the internal circuit.

[0062] Similar to the first guide groove 211, the second guide groove 231 is formed on the side wall of the third frame 23 near the second connecting strip 42. Its structure, position, and extension logic are symmetrical to the first guide groove 211. The entrance section is located at the end of the third frame 23 away from the second frame 22, and extends along the entrance end to the position corresponding to the second connecting electrode. The inner walls of the first guide groove 211 and the second guide groove 231 can be polished or coated with a low-friction coefficient material to reduce frictional resistance during assembly.

[0063] Furthermore, the bottom of both the first guide groove 211 and the second guide groove 231 is provided with positioning protrusions or locking positions to provide final limiting when the first connecting electrode 411 and the second connecting electrode reach the designated position. During assembly, the first connecting strip 41 can be pushed in along the groove of the first frame 21, while the first connecting electrode 411 enters at the correct angle and depth under the constraint of the first guide groove 211, avoiding scratching or collision damage between the electrode and the frame. When the first connecting electrode 411 reaches the bottom of the first guide groove 211, the assembly is in place. The second connecting strip 42 is similarly assembled to the third frame 23 through the second guide groove 231. In some embodiments, the exit end of the guide groove is also provided with a chamfer to guide the electrode smoothly into the groove and prevent the connecting electrode from bumping due to excessively sharp edges. Furthermore, at the opening end of the first guide groove 211 and the second guide groove 231 (the end near the track lock frame 30), a notch is opened on the same side, the notch connecting to the guide groove to facilitate wiring layout and connection of external power supply.

[0064] By providing a first guide groove 211 and a second guide groove 231 extending to the corresponding positions of the electrodes on the inner sides of the first frame 21 and the third frame 23, the first connecting strip 41 and the second connecting strip 42 can slide along a preset trajectory during assembly, thereby providing precise guidance for the first connecting electrode 411 and the second connecting electrode. This prevents the connecting electrode from shifting, tilting, or colliding hard with the frame wall during insertion, which helps protect the electrode structure and the inner wall of the frame. The first guide groove 211 and the second guide groove 231 extend from the end away from the second frame 22 to the corresponding position of the connecting electrode, realizing a linear assembly path from the outside to the inside. This allows the connecting electrode to slide smoothly into the predetermined position, eliminating the uncertainty of clearance fit during assembly, thereby achieving precise positioning of the electrode and improving assembly accuracy. This guiding and limiting structure reduces debugging time and alignment difficulty during assembly, making the assembly process smoother and more efficient, which helps to improve production cycle time. By restricting the degree of freedom of the connecting electrode during assembly, the consistency of the docking position between the connecting electrode and the internal connecting structure or external connecting parts is ensured, further improving the stability and reliability of the electrical connection.

[0065] Please see Figure 10 and Figure 11 , Figure 10 This is a schematic diagram of the track frame 20 provided in another embodiment of this application. Figure 11 This is a schematic diagram of the connecting strip provided in another embodiment of this application. In one embodiment, the first frame 21 and the third frame 23 are both arc-shaped protrusions in the opposite direction to the light emission direction, and have the same curvature. The first connecting strip 41 and the second connecting strip 42 are both arc-shaped, and have the same curvature as the first frame 21; a plurality of first positioning grooves 412 corresponding to the light strips 10 are provided on the side opposite to the first connecting strip 41 and the second connecting strip 42, and a plurality of second positioning grooves 422 corresponding to the light strips 10 are provided on the side opposite to the first connecting strip 41.

[0066] The first frame 21 and the third frame 23 have outwardly protruding arc-shaped structures in the opposite direction of the light emission direction, and their radii of curvature are equal, i.e., the same curvature, thus forming a receiving cavity with a specific curvature inside the track frame 20. The first connecting strip 41 and the second connecting strip 42 also adopt an arc-shaped design, and their curvature is consistent with that of the first frame 21 and the third frame 23, ensuring that the components can fit seamlessly after assembly and maintaining the geometric consistency of the overall structure. The first connecting strip 41 is located inside the first frame 21, and the second connecting strip 42 is located inside the third frame 23, respectively located at both ends of the light strip 10.

[0067] On the surface of the first connecting strip 41 facing the second connecting strip 42, a plurality of first positioning grooves 412 are spaced apart along an arc-shaped extension direction; on the surface of the second connecting strip 42 facing the first connecting strip 41, a plurality of second positioning grooves 422 are correspondingly provided. The depth and width of these positioning grooves can be designed according to the size of the connecting strips and the limiting requirements of the light strip 10. When the light strip 10 is placed into the track frame 20, the opposite ends of the light strip 10 are respectively located in the first positioning groove 412 and the second positioning groove 422, and the connecting part 113 at the end of the light strip 10 abuts against the groove wall to achieve dual fixation of mechanical limiting and electrical connection. Specifically, an engineering plastic with a certain degree of elasticity can be selected as the connecting strip material, such as modified PPS or PEEK.

[0068] Furthermore, conductive adhesive can be applied to the first positioning groove 412 and the second positioning groove 422, or elastic conductive contacts can be provided to enhance contact stability. Specifically, the positioning groove can be configured as a dovetail groove, a rectangular groove, or a semi-circular groove structure to accommodate the different shapes of the end structures of the light strip 10. During assembly, the glass-based light strip 10 is first placed into the space defined by the first connecting strip 41 and the second connecting strip 42 in sequence. The end of the light strip 10 slides into or is pressed into the corresponding positioning groove. Then, the track locking frame 30 is closed, and the pressure of the track locking frame 30 is used to make the light strip 10 fit tightly in the positioning groove, thus completing the fixing and conduction of the light strip 10.

[0069] By designing the first frame 21, the third frame 23, the first connecting strip 41, and the second connecting strip 42 all as arc-shaped structures with the same curvature, a smooth-transition curved space is formed inside the entire track frame 20. This facilitates the assembly requirements of curved display backlights and improves the device's compatibility with different display forms. The first positioning groove 412 and the second positioning groove 422 provided on the first connecting strip 41 and the second connecting strip 42 allow the connecting part 113 on the glass-based lamp strip 10 to be accurately embedded and fixed, reducing the wobbling gap of the lamp strip 10 in the horizontal or vertical direction and improving the positioning accuracy and mechanical stability of the lamp strip 10 within the track frame 20. The arc-shaped positioning groove design results in a larger contact area compared to a planar structure, which helps to reduce contact resistance, improve current transmission efficiency, and disperse local stress, reducing the risk of connection loosening due to thermal expansion and contraction. The design with the same curvature ensures the geometric consistency of the internal space of the track frame 20, resulting in a uniform curvature of the light-emitting surface formed by splicing multiple light strips 10. This avoids uneven light output or visual defects caused by structural misalignment, further improving the quality of the displayed image. Through the aforementioned track frame 20 and connecting strips, the light panel can be adapted to the curved display device 1000.

[0070] Specifically, the light-emitting substrate 100 provided in the above embodiments can be used as a display substrate to display images, or as a lamp board in a backlight module 300 to provide backlight, or as a light source board, so that the light-emitting substrate 100 can be used in a variety of application scenarios.

[0071] Please see Figure 12 and Figure 13 , Figure 12 This is a disassembled structural diagram of a backlight module 300 provided in one embodiment of this application. Figure 13 This is a schematic diagram of the structure of a backlight module 300 provided in one embodiment of this application. In one embodiment, a backlight module 300 is provided, which includes: a back plate 50; and a light-emitting substrate 100 disposed in the back plate 50, wherein the light-emitting substrate 100 is the light-emitting substrate 100 provided in the above embodiment.

[0072] The back plate 50 includes a bottom plate 51 and a side plate 52. The side plate 52 surrounds and connects to the bottom plate 51 to form a groove. The back plate 50 can be a one-piece molded groove and can be made of a material with good heat dissipation. The light-emitting substrate 100 is disposed in the back plate 50. The light-emitting substrate 100 is the light-emitting substrate 100 provided in the above embodiment. Its specific structure and function are the same as those of the light-emitting substrate 100 provided in the above embodiment. For details, please refer to the detailed description above, which will not be repeated here.

[0073] Furthermore, the backlight module 300 also includes an adhesive 61, a support 62, a reflector 70, an optical film 81, and a mid-frame 82. The adhesive 61 is disposed between the light-emitting substrate 100 and the back plate 50, and is used to bond the light-emitting substrate 100 to the bottom plate 51 of the back plate 50 to fix the sub-lamp strip 11. There is a height difference between the bottom wall surface of the track frame 20 and the bottom surface of the lamp strip 10. This height difference is easily understood to be the thickness of the bottom wall of the track frame 20. The thickness of the adhesive 61 is the same as or slightly greater than this height difference. The adhesive 61 is bonded to the bottom surface of the lamp strip 10, i.e., the side facing away from the light-emitting unit 114, so that the adhesive 61 can bond the light-emitting substrate 100 and the back plate 50 more firmly, making the overall structure more compact. Specifically, the adhesive 61 can be a thermally conductive adhesive such as silicon-based thermally conductive adhesive or polyurethane-based thermally conductive adhesive, to conduct the heat generated by the lamp strip 10 to the back plate 50 for rapid heat dissipation.

[0074] During assembly, an adhesive member 61 can be attached to the bottom surface of the light-emitting substrate 100, allowing the entire light-emitting substrate 100 to be placed into the back plate 50; the length and width dimensions of the light-emitting substrate 100 match the length and width dimensions of the inner cavity of the back plate 50. Then, the support member 62 is fixed to the light-emitting substrate 100 using glue or screws. Next, a reflective sheet 70 is placed, positioned on the light-emitting side surface of the light-emitting substrate 100; the reflective sheet 70 has multiple cutouts 71 corresponding one-to-one with the light-emitting units 114, through which the light-emitting units 114 pass. The edge of the reflective sheet 70 overlaps the top of the side wall of the back plate 50 and is fixed to the top of the side wall of the back plate 50 using glue or other fixing methods, forming a bearing surface that allows the reflective sheet 70 and the light-emitting substrate 100 to adhere to this bearing surface. Furthermore, adhesive can be applied to the back of the reflective sheet 70 to make the two adhere even more tightly. Finally, the optical film 81 and the middle frame 82 are placed in sequence. The middle frame 82 and the back plate 50 are fastened by physical means such as screws, which can also limit the optical film 81. Thus, the backlight module 300 is assembled.

[0075] By employing a light-emitting substrate 100 structure composed of multiple glass-based LED strips 11, the scraps from large glass panels can be fully utilized for cutting and manufacturing, thereby improving the overall utilization rate of the glass substrate. By breaking down the large-size LED panel into individual LED strips 10 for independent manufacturing, the manufacturing process difficulty of individual products is reduced, which helps improve the yield rate of the glass-based LED strips 10. Utilizing the magnetic adsorption properties of the connecting part 113 in conjunction with connecting strips (first connecting strip 41 and second connecting strip 42) for splicing, the connection between the LED strips 10 is tighter and the electrical conduction is more stable, which is beneficial for the application of large-size, multi-row MiniLED direct-lit light-emitting substrates 100. Through the coordinated assembly of the track frame 20, track locking frame 30, and connecting strips, the integrated component structure of the light-emitting substrate 100 is compact and easy to automate, which helps improve assembly efficiency and reduce production costs. Furthermore, this splicing structure supports both planar and curved LED panel assemblies, resulting in high material versatility and facilitating adaptation to different types of display devices 1000.

[0076] Please see Figure 14 , Figure 14 This is a schematic diagram of the structure of a display device 1000 provided in an embodiment of this application. In this embodiment, a display device 1000 is provided, which includes: Display panel 400 is used to display images; A backlight module 300 is disposed opposite to the display panel 400 and is used to provide backlight to the display panel 400; the backlight module 300 is the backlight module 300 provided in the above embodiment.

[0077] The display panel 400 is used to display images, and may specifically be a liquid crystal display, an e-ink display, an electrowetting display, or other display panels that require backlighting. The backlight module 300 is disposed on the backlight side of the display panel 400, opposite to the display panel 400, and is used to provide backlighting to the display panel 400, thereby enabling the display panel 400 to display images. The specific structure and function of the backlight module 300 are the same as those provided in the previous embodiment, and can achieve the same technical effects. For details, please refer to the detailed description above; further elaboration is not provided here.

[0078] The above are merely embodiments of this application and do not limit the scope of patent protection of this application. Any equivalent structural or procedural changes made using the content of this application’s specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A light-emitting substrate, comprising a plurality of lamp strips arranged along a first direction, characterized in that, The light strip includes at least one sub-light strip, the sub-light strip comprising: The substrate is a glass residue substrate; A circuit layer is disposed on one side of the substrate; A connecting portion is disposed at the end of the substrate, is on the same layer as the circuit layer and is electrically connected; the connecting portion is magnetic; wherein, when the light strip includes at least two sub-light strips, the at least two sub-light strips are connected end to end through the connecting portion to form the light strip; the material of the connecting portion includes magnetic particles and a conductive polymer matrix, wherein the magnetic particles are dispersed in the conductive polymer matrix; The light-emitting unit is disposed on the side of the circuit layer away from the substrate and is bonded to the circuit layer via pads.

2. The light-emitting substrate according to claim 1, characterized in that, The sub-strip also includes a first protective layer, a first adhesive layer, a second adhesive layer, a third adhesive layer, and a second protective layer; the first protective layer is bonded to the side of the substrate away from the circuit layer via the first adhesive layer; the second adhesive layer is disposed between the substrate and the circuit layer; the second protective layer is bonded to the side of the circuit layer away from the substrate via the third adhesive layer; The sub-light strip has notches at both ends, and the material of the connecting part is filled into the notches to form the connecting part.

3. The light-emitting substrate according to claim 1, characterized in that, The light-emitting substrate further includes: The track frame includes a first border, a second border, and a third border that are connected end to end in sequence; wherein the first border and the third border are disposed opposite to each other, and the second border is located between the first border and the third border; A track lock frame is disposed between the first frame and the third frame, opposite to the second frame, and detachably connected to the ends of the first frame and the third frame; The light strip is disposed in the track frame, and its two ends abut against the first frame and the third frame, respectively.

4. The light-emitting substrate according to claim 3, characterized in that, Both the first frame and the third frame are through slots, and the two ends of the light strip are respectively disposed in the slots of the first frame and the third frame; The track lock frame is a through groove, and the edge portion of the light strip near the track lock frame is disposed in the groove of the track lock frame; The track lock frame has locking parts at opposite ends, and the two locking parts are respectively locked to the first frame and the third frame.

5. The light-emitting substrate according to claim 4, characterized in that, The light-emitting substrate further includes: The first connecting strip is disposed in the groove of the first frame and abuts against the light strip. The end of each light strip is electrically connected to the first connecting strip through the connecting part. The second connecting strip is disposed in the groove of the third frame and abuts against the light strip. The end of each light strip contacts the second connecting strip through the connecting part to form an electrical connection. The first connecting strip and the second connecting strip are made of conductive material.

6. The light-emitting substrate according to claim 5, characterized in that, The first connecting strip has a first connecting electrode on the side opposite to the light strip. The first connecting electrode is columnar and penetrates the side wall of the first frame. The second connecting strip has a second connecting electrode on the side opposite to the light strip. The second connecting electrode is columnar and penetrates the third frame. The first connecting electrode and the second connecting electrode are used to connect to a power source.

7. The light-emitting substrate according to claim 6, characterized in that, A first guide groove is provided on the side wall of the first frame near the first connecting strip. The first guide groove penetrates the side wall of the first frame and extends from the end of the first frame away from the second frame to the position corresponding to the first connecting electrode. It is used to guide and limit the first connecting electrode when assembling the first connecting strip. A second guide groove is provided on the side wall of the third frame near the second connecting strip. The second guide groove penetrates the side wall of the third frame and extends from the end of the third frame away from the second frame to the position corresponding to the second connecting electrode. It is used to guide and limit the second connecting electrode when assembling the second connecting strip.

8. The light-emitting substrate according to claim 3, characterized in that, Both the first frame and the third frame are arc-shaped protrusions in the opposite direction of the light emission direction, and have the same degree of curvature; Both the first connecting strip and the second connecting strip are arc-shaped, and the arc is the same as the arc of the first frame; the first connecting strip and the second connecting strip have a plurality of first positioning grooves corresponding to the light strips on the opposite side of the first connecting strip, and the second connecting strip and the first connecting strip have a plurality of second positioning grooves corresponding to the light strips on the opposite side of the second connecting strip.

9. A backlight module, characterized in that, include: Back panel; A light-emitting substrate is disposed in the back plate, wherein the light-emitting substrate is the light-emitting substrate as described in any one of claims 1-8.

10. A display device, characterized in that, include: Display panel, used to display images; A backlight module, disposed opposite to the display panel, is used to provide backlight to the display panel; The backlight module is the backlight module as described in claim 9.

Images