Backlight module and display device

Abstract

This application discloses a backlight module and display device. The backlight module includes: multiple glass-based LED strips and a splicing layer. Each glass-based LED strip includes a glass substrate and a light-emitting element. The splicing layer is disposed on the surface of the glass substrate near the light-emitting element and is fixed to the glass substrate. The splicing layer is a self-supporting structure. This application supports the glass-based LED strips by placing the splicing layer on the surface of the glass substrate near the light-emitting element. Simultaneously, the splicing layer can cover the seams between multiple spliced ​​glass-based LED strips, making the seams invisible from the front of the display panel, achieving a "seamless splicing" effect. Furthermore, multiple glass-based LED strips can be spliced ​​to form a large-size lamp panel, which not only improves the utilization rate of the bare glass substrate but also reduces the yield loss of the lamp panel; and the manufacturing process is simple.

Description

Technical Field

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

[0002] As the panel industry continues to expand, competition is intensifying, making cost advantage a crucial factor in securing a stable market position. Therefore, improving glass utilization is key to cost reduction. In many related technologies, glass substrates leave glass residue after cutting, resulting in significant material waste, increased production costs, and reduced manufacturing efficiency. When the number of LEDs on a light panel is large, such as in mini LEDs or micro LEDs, the yield requirements for the light panel are extremely high. Even a single defective LED can affect the entire panel, thus requiring a balance to be struck. Summary of the Invention

[0003] In view of this, this application provides a backlight module and display device to solve the problems of glass waste and low lamp board yield in the prior art.

[0004] To solve the above-mentioned technical problems, the first technical solution provided in this application is: to provide a backlight module, including: a plurality of glass-based light strips and an assembly layer, each of the glass-based light strips including a glass substrate and a light-emitting element; the assembly layer is disposed on the surface of the glass substrate near the light-emitting element and is fixed to the glass substrate; wherein, the assembly layer is a self-supporting structure.

[0005] In one embodiment, the assembly layer includes: a first substrate layer, a second substrate layer disposed opposite to each other, and a first conductive line layer disposed between the first substrate layer and the second substrate layer; wherein, the first conductive line layer includes a first electrode and a second electrode, and the first electrode and the second electrode are electrically connected to the light-emitting element respectively.

[0006] In one embodiment, the assembly layer has through holes through which the light-emitting element is exposed; wherein the first electrode and the second electrode are electrically connected to the corresponding electrodes of the light-emitting element through vias; or, the assembly layer has a groove, with a portion of the second substrate layer serving as the bottom wall of the groove and covering the light-emitting element; wherein the second substrate layer is made of a light-transmitting material; or, the light-emitting element is bonded to the glass substrate, and the electrode pairs of the light-emitting element are disposed on the side of the light-emitting element away from the glass substrate, and are electrically connected to the first electrode and the second electrode in a one-to-one correspondence; wherein the light-emitting element emits light towards the side facing the glass substrate.

[0007] In one embodiment, the assembly layer includes a first substrate layer, a second substrate layer disposed opposite to each other, and a first conductive line layer disposed between the first substrate layer and the second substrate layer; the first conductive line layer includes a first electrode; a second conductive line layer and an insulating layer covering the second conductive line layer are disposed on the glass substrate; the second conductive line layer includes a second electrode; the light-emitting element has a vertical structure, with a first contact electrode at the top and a second contact electrode at the bottom; the first contact electrode is electrically connected to the first electrode, and the second contact electrode is electrically connected to the second electrode, so that the first conductive line layer and the second conductive line layer cooperate to drive the light-emitting element.

[0008] In one embodiment, the first substrate layer has a first opening to expose the first electrode; the insulating layer has a second opening to expose the second electrode; the first contact electrode and the first electrode, as well as the second contact electrode and the second electrode, are electrically connected by a conductive agent; or, the first substrate layer and the conductive circuit layer have a first opening, the second substrate layer has a second opening communicating with the first opening, the first opening and the second opening exposing the light-emitting element; the size of the second opening is larger than the size of the first opening to expose the side of the first electrode away from the first substrate layer; the exposed portion of the first contact electrode and the first electrode are electrically connected by overlapping with a conductive agent, and the second contact electrode and the second electrode are electrically connected by a conductive agent.

[0009] In one embodiment, multiple light-emitting elements of each glass-based lamp strip are arranged in a column, and multiple light-emitting elements of multiple glass-based lamp strips are arranged in multiple rows and columns; there are multiple first conductive line layers, each first conductive line layer further includes a first driving line electrically connected to each first electrode, and each first electrode is connected to the light-emitting elements in the same row through a first contact electrode; the second conductive line layer further includes a second driving line electrically connected to the second electrode, and first connecting electrodes and second connecting electrodes arranged at intervals, the second electrodes being connected to the light-emitting elements in the same column to independently control each light-emitting element; wherein, the light-emitting element is electrically connected to the first connecting electrode and the second connecting electrode respectively, and the second connecting electrode extends to one side of the light-emitting element; the first connecting electrode is electrically connected to the second driving line; the insulating layer has multiple openings, each opening exposing a portion of the second connecting electrode; each first driving line is electrically connected to the first connecting electrode of the light-emitting element in the same row through the opening.

[0010] In one embodiment, a second conductive line layer and an insulating layer covering the second conductive line layer are disposed on the glass substrate; the second conductive line layer includes a first electrode and a second electrode; the light-emitting element is electrically connected to the first electrode and the second electrode respectively.

[0011] In one embodiment, the assembly layer has a plurality of openings, each of the light-emitting elements being exposed and protruding through one of the openings; a reflective layer is also provided on the surface of the assembly layer away from the glass substrate.

[0012] In one embodiment, the backlight module further includes: a support layer disposed on the side of the glass substrate away from the light-emitting element, the support layer including a plurality of support plates; wherein the plurality of support plates are arranged side by side, the support plates and the glass substrate are arranged in the same direction; a first splicing seam is formed between adjacent glass-based lamp strips; a second splicing seam is formed between adjacent support plates; wherein the first splicing seam and the second splicing seam are staggered along the thickness direction of the backlight module; or, the plurality of glass substrates are arranged sequentially along a first direction, and a first splicing seam is formed between adjacent glass-based lamp strips; the support plates are arranged along a direction intersecting the first direction, and the support plates at least cover part of the first splicing seam; wherein the first direction is the arrangement direction of the plurality of glass substrates.

[0013] To solve the above-mentioned technical problems, the second technical solution provided in this application is: to provide a display device, including: a display panel and a backlight module, wherein the backlight module is electrically connected to the display panel and is used to provide a light source for the display panel; wherein the backlight module is any of the backlight modules described above.

[0014] The beneficial effects of this application are as follows: Unlike existing technologies, the backlight module of this application includes: multiple glass-based light strips and an assembly layer. Each glass-based light strip includes a glass substrate and a light-emitting element. The assembly layer is disposed on the surface of the glass substrate near the light-emitting element and is fixed to the glass substrate. The assembly layer is a self-supporting structure. By placing the assembly layer on the surface of the glass substrate near the light-emitting element, this application supports the glass-based light strips. Simultaneously, the assembly layer can cover the seams between multiple spliced ​​glass-based light strips, making the seams invisible from the front of the display panel, achieving a "seamless splicing" effect. Furthermore, multiple glass-based light strips can be spliced ​​to form a large-size light panel, which not only improves the utilization rate of the bare glass substrate but also reduces the yield loss of the light panel; and the manufacturing process is simple. Attached Figure Description

[0015] 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 creative effort.

[0016] Figure 1 This is a top view structural diagram of the backlight module provided in this application;

[0017] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure along the AA direction is provided;

[0018] Figure 3 This is a side view structural diagram of the backlight module provided in the first embodiment of this application;

[0019] Figure 4 This is a side view structural diagram of the backlight module provided in the second embodiment of this application;

[0020] Figure 5 This is a side view structural diagram of the backlight module provided in the third embodiment of this application;

[0021] Figure 6 This is a side view schematic diagram of the first structure of the backlight module provided in the fourth embodiment of this application;

[0022] Figure 7 This is a side view schematic diagram of the second structure of the backlight module provided in the fourth embodiment of this application;

[0023] Figure 8 This is a top view schematic diagram of the third structure of the backlight module provided in the fourth embodiment of this application;

[0024] Figure 9 This is a top view of the backlight module provided in the fifth embodiment of this application;

[0025] Figure 10-1 This application Figure 9 The schematic diagram of the cross-sectional structure along B'-B' provided in the image;

[0026] Figure 10-2 This application Figure 9 The schematic diagram of the cross-sectional structure along CC provided in the image;

[0027] Figure 11 This is a side view structural diagram of the backlight module provided in the sixth embodiment of this application;

[0028] Figure 12 This is a side view structural diagram of the backlight module provided in the seventh embodiment of this application;

[0029] Figure 13 This application Figure 1 A side view structural diagram of a backlight module along a first direction is provided, which shows the structure of the first type of support layer;

[0030] Figure 14 This application Figure 1 A side view of the backlight module along the second direction is provided, which shows the structure of the first type of support layer;

[0031] Figure 15 This application Figure 1 A side view of the backlight module along the first direction is provided, which shows the structure of the second type of support layer;

[0032] Figure 16 This application Figure 1 A side view of the backlight module along the second direction is provided, which shows the structure of the second type of support layer;

[0033] Figure 17 This is a simplified structural diagram of a display device provided in an embodiment of this application;

[0034] Figure 18 This is a schematic diagram of the cutting of the bare glass substrate provided in this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] 200. Display device; 201. Display panel; 2011. Display substrate; 2012. Array substrate; 2013. Liquid crystal layer; 2014. Liquid crystal molecule; 100. Backlight module; 10. Assembly layer; 101. Through hole; 102. Groove; 1021. Side wall; 1022. Bottom wall; 103. First opening; 11. First substrate layer; 12. First conductive line layer; 121. First electrode; 122. Second electrode; 123. First driving line; 13. Second substrate layer; 131. Third opening; 14. Via; 15. Conductive agent; 151. First connection part; 152. Second connection part; 16. First conductive part; 1 7. Second conductive section; 30. Adhesive layer; 20. Glass-based light strip; 21. Glass substrate; 22. Light-emitting element; 221. Positive electrode; 2211. First contact electrode; 222. Negative electrode; 2221. Second contact electrode; 23. First splicing seam; 30. Adhesive layer; 40. Second conductive circuit layer; 41. Second driving circuit; 42. First connecting electrode; 43. Second connecting electrode; 44. Driving circuit board; 50. Insulating layer; 51. Second opening; 60. Support layer; 61. Support plate; 611. Second splicing seam; 70. Reflective layer; 300. Bare glass substrate; 301. Liquid crystal panel; 302. Light panel substrate. Detailed Implementation

[0037] 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 skilled in the art without creative effort are within the scope of protection of this application.

[0038] The terms "first" and "second" 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 indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. 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 will 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.

[0039] 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.

[0040] During the research process of this application, it was found that: Figure 18 As shown, the layout of LCD panels 301 of various sizes is arranged according to the size of the bare glass substrate 300. Generally, the larger the size of the product, the higher the proportion of bare glass substrate. Therefore, the utilization of bare glass substrate can improve the utilization rate of bare glass substrate 300.

[0041] Large-size direct-lit LED panels are mainly composed of smaller-size LED panels spliced ​​together. When there are a large number of LEDs on the LED panel, such as mini LEDs or micro LEDs, the yield requirements of the LED panel are extremely high. If even one LED is defective, it will affect the entire LED panel. Therefore, this application found that splicing together a smaller number of LED panels can better balance this problem.

[0042] To address the aforementioned issues, this application provides a backlight module and a display device.

[0043] Please see Figures 1 to 2 , Figure 1 This is a top view structural diagram of the backlight module provided in this application; Figure 2 yes Figure 1 The provided sectional view of the structure along the AA direction is shown in the diagram.

[0044] The backlight module 100 provided in this application includes multiple glass-based light strips 20 and a splicing layer 10. Each glass-based light strip 20 includes a glass substrate 21 and a light-emitting element 22. It is understood that, to facilitate the splicing of multiple glass-based light strips 20, the glass-based light strip 20 can be a strip shape. The light-emitting element 22 can be an LED, mini LED, or micro LED, etc. It is understood that the spliced ​​multiple glass-based light strips 20 can be used in a direct-lit backlight module 100 or a side-lit backlight module 100, and this application does not impose any limitations on this. Simultaneously, a smaller glass substrate 21 can be cut during the cutting of the LCD panel 301, and the driving circuitry and insulating layer 50 can be fabricated on the bare glass substrate 300 through the same process, thereby saving steps. After the glass substrate 21 for the required light strip is obtained through the cutting process, the strip glass-based light strip 20 is fabricated through processes such as SMT (Surface Mount Technology).

[0045] The splicing layer 10 is disposed on the surface of the glass substrate 21 near the light-emitting element 22 and is fixed to the glass substrate 21, for example, by adhesive bonding. Unlike related technologies where the splicing layer 10 is disposed on the surface of the glass substrate 21 away from the light-emitting element 22, this application's placement of the splicing layer 10 on the surface of the glass substrate 21 near the light-emitting element 22 can conceal the seams of multiple glass-based LED strips 20, making the seams invisible from the front of the display panel 201, achieving a "seamless splicing" display effect. Based on the size and wiring requirements of the spliced ​​multiple glass-based LED strips 20, the splicing layer 10 is correspondingly provided with driving circuits and conductive electrodes (see below) to ensure one-to-one electrical connection with each of the strip-shaped glass-based LED strips 20.

[0046] In this application, the assembly layer 10 is a self-supporting structure, which allows it to be produced independently and directly assembled after production, thereby improving production efficiency. It also facilitates later individual maintenance and replacement of the assembly layer 10. A self-supporting structure can be understood as one that can be formed independently without relying on other structures for support. For example, splicing panels and splicing films disposed on the surface of the glass substrate 21 can be formed and exist independently, thus constituting a self-supporting structure; while paints and coatings applied to the surface of the glass substrate 21 cannot be formed and exist independently, and can only be applied to or attached to the surface of other objects, thus constituting a non-self-supporting structure.

[0047] Please see Figures 3 to 5 , Figure 3 This is a side view structural diagram of the backlight module provided in the first embodiment of this application; Figure 4 This is a side view structural diagram of the backlight module provided in the second embodiment of this application; Figure 5 This is a side view structural diagram of the backlight module provided in the third embodiment of this application.

[0048] In one embodiment, the assembly layer 10 includes a first substrate layer 11, a second substrate layer 13 disposed opposite to each other, and a first conductive line layer 12 disposed between the first substrate layer 11 and the second substrate layer 13; the first conductive line layer 12 is sandwiched between the first substrate layer 11 and the second substrate layer 13 for connecting and driving multiple strip glass-based light bars 20. The first substrate layer 11 and the second substrate layer 13 may be made of polyimide or similar resin materials; the first conductive line layer 12 may be made of copper, aluminum, or similar conductive materials.

[0049] Furthermore, the first conductive circuit layer 12 may include a first electrode 121 and a second electrode 122, which are electrically connected to the light-emitting element 22, respectively. The first electrode 121 can be a positive electrode, and the second electrode 122 can be a negative electrode. It is understood that the light-emitting element 22 also has a positive electrode 221 and a negative electrode 222 corresponding to the first electrode 121 and the second electrode 122, such that the first electrode 121 is electrically connected to the positive electrode 221 of the light-emitting element 22, and the second electrode 122 is electrically connected to the negative electrode 222 of the light-emitting element 22. Because the first conductive circuit layer 12 of the assembly layer 10 can conduct and drive the light-emitting element 22, a driving circuit is not required on the glass substrate 21.

[0050] In the first embodiment:

[0051] like Figure 3As shown, the assembly layer 10 has a through-hole 101 through which the light-emitting element 22 is exposed. The first electrode 121 and the second electrode 122 are electrically connected to the corresponding electrodes of the light-emitting element 22 via vias 14. In this embodiment, the top of the light-emitting element 22 can be lower than the height of the first substrate layer 11, so that the top of the light-emitting element 22 does not contact the first electrode 121 and the second electrode 122. The corresponding electrodes of the light-emitting element 22 are electrically connected to the first electrode 121 and the second electrode 122 vias 14. The vias 14 are formed in the first substrate layer 11 and filled with a conductive agent 15, such as conductive adhesive, solder, or metal, to achieve the electrical connection between the first electrode 121 and the second electrode 122 and the corresponding electrodes of the light-emitting element 22.

[0052] Furthermore, the light-emitting element 22 can be fixed by an adhesive layer 30 around the gap between the first substrate layer 11 and the glass substrate 21.

[0053] In the second embodiment:

[0054] like Figure 4 As shown, the assembly layer 10 has a groove 102. The sidewall 1021 of the groove 102 is formed by the first substrate layer 11 and the first conductive line layer 12. A portion of the second substrate layer 13 serves as the bottom wall 1022 of the groove 102, and the bottom wall 1022 covers the light-emitting element 22. The second substrate layer 13 is made of a light-transmitting material so that the light-emitting element 22 can transmit light through the second substrate layer 13. In this embodiment, the light-emitting element 22 is covered by the second substrate layer 13, thereby protecting the light-emitting element 22, eliminating the need for an encapsulation layer (not shown), saving manufacturing steps and materials, and improving production efficiency. At the same time, the light-transmitting material of the second substrate layer 13 also ensures the light-emitting effect of the light-emitting element 22.

[0055] Similar to the first embodiment, in this embodiment, the top of the light-emitting element 22 can also be lower than the height of the first substrate layer 11, so that the top of the light-emitting element 22 does not contact the first electrode 121 and the second electrode 122; and the corresponding electrodes of the light-emitting element 22 are electrically connected to the first electrode 121 and the second electrode 122 respectively through vias 14. The vias 14 can be formed in the first substrate layer 11 and filled with a conductive agent 15, such as conductive adhesive, solder, or metal, to achieve electrical connection between the first electrode 121 and the second electrode 122 and the corresponding electrodes of the light-emitting element 22. Furthermore, the light-emitting element 22 can be fixed by an adhesive layer 30 around it in the gap between the first substrate layer 11 and the glass substrate 21.

[0056] It is understood that in the first and second embodiments of the assembly layer 10, the light-emitting element 22 emits light from the top.

[0057] In the third embodiment:

[0058] like Figure 5 As shown, the light-emitting element 22 is bonded to the glass substrate 21, and the positive electrode 221 and negative electrode 222 of the light-emitting element 22 can be disposed on the side of the light-emitting element 22 away from the glass substrate 21. That is, the light-emitting element 22 in this embodiment is a flip-chip structure, with the light-emitting element 22 emitting light towards the side of the glass substrate 21, i.e., bottom light emission. In use, the glass substrate 21 is positioned towards the light guide plate (not shown). Furthermore, the positive electrode 221 and negative electrode 222 of the light-emitting element 22 can be electrically connected to the first electrode 121 and the second electrode 122 in a one-to-one correspondence. In this embodiment, the positive electrode 221 of the light-emitting element 22 is electrically connected to the first electrode 121, and the negative electrode 222 is electrically connected to the second electrode 122 through the via 14.

[0059] Meanwhile, the light-emitting element 22 can also be fixed by an adhesive layer 30 around the gap between the first substrate layer 11 and the glass substrate 21.

[0060] Please see Figures 6 to 8 , Figure 6 This is a side view schematic diagram of the first structure of the backlight module provided in the fourth embodiment of this application; Figure 7 This is a side view schematic diagram of the second structure of the backlight module provided in the fourth embodiment of this application; Figure 8 This is a top view schematic diagram of the third structure of the backlight module provided in the fourth embodiment of this application.

[0061] In the fourth embodiment:

[0062] The first conductive line layer 12 includes a first electrode 121; a second conductive line layer 40 and an insulating layer 50 covering the second conductive line layer 40 are disposed on the glass substrate 21; the second conductive line layer 40 includes a second electrode 122.

[0063] In this embodiment, the light-emitting element 22 has a vertical structure. The positive electrode 221 of the light-emitting element 22 is disposed at the top of the light-emitting element 22, serving as the first contact electrode 2211; the negative electrode 222 is disposed at the bottom of the light-emitting element 22, serving as the second contact electrode 2221. The first contact electrode 2211 is electrically connected to the first electrode 121, and the second contact electrode 2221 is electrically connected to the second electrode 122, so that the first conductive line layer 12 and the second conductive line layer 40 cooperate to drive the light-emitting element 22.

[0064] Further, such as Figure 6As shown, in the first structure of the backlight module 100 in this embodiment, the first substrate layer 11 may have a first opening 103 to expose the first electrode 121; the insulating layer 50 has a second opening 51 to expose the second electrode 122. It can be understood that the first opening 103 and the second opening 51 may have the same size and be positioned correspondingly. Both the first opening 103 and the second opening 51 are located in the thickness direction of the backlight module 100 corresponding to the light-emitting element 22. The first contact electrode 2211 and the first electrode 121 can be electrically connected by a conductive agent 15, and the second contact electrode 2221 and the second electrode 122 can also be electrically connected by a conductive agent 15. The conductive agent 15 can be conductive adhesive or solder, etc. Additionally, the light-emitting element 22 can be fixed around it in the gap between the first substrate layer 11 and the insulating layer 50 by an adhesive layer 30.

[0065] Or, such as Figure 7 As shown, in the second structure of the backlight module 100 in this embodiment, the first substrate layer 11 and the conductive line layer have a first opening 103, that is, the first opening 103 penetrates the first substrate layer 11 and the conductive line layer; the second substrate layer 13 has a third opening 131 that communicates with the first opening 103, and the first opening 103 and the third opening 131 expose the light-emitting element 22; the size of the third opening 131 is larger than the size of the first opening 103, so as to expose the side of the first electrode 121 away from the first substrate layer 11, thereby increasing the contact area between the conductive agent 15 and the first electrode 121 and improving the electrical connection effect.

[0066] Specifically, the exposed portions of the first contact electrode 2211 and the first electrode 121 are electrically connected by overlapping with the conductive agent 15, and the second contact electrode 2221 and the second electrode 122 are electrically connected by the conductive agent 15. Specifically, the conductive agent 15 can form a first connecting portion 151 and a second connecting portion 152 at its two ends in contact with the first electrode 121. The first connecting portion 151 and the second connecting portion 152 are respectively overlapped with the first electrode 121 to achieve electrical connection between the first contact electrode 2211 and the first electrode 121.

[0067] In the third structure of the backlight module 100 in this embodiment, each light-emitting element 22 can be controlled individually.

[0068] like Figure 8As shown, specifically, the multiple light-emitting elements 22 of each glass-based lamp strip 20 are arranged in a column, or the multiple light-emitting elements 22 of multiple glass-based lamp strips 20 are arranged in multiple rows and columns. For example, multiple light-emitting elements 22 are arranged in an array, and 5 to 10 rows of light-emitting elements 22 can be set at once, thereby saving process and improving manufacturing efficiency. There are multiple first conductive line layers 12, and each first conductive line layer 12 also includes a first driving line 123 electrically connected to each first electrode 121. Each first electrode 121 is connected to the same row of light-emitting elements 22 through a first contact electrode 2211.

[0069] The second conductive circuit layer 40 also includes a second driving circuit 41 electrically connected to the second electrode 122, and a first connecting electrode 42 and a second connecting electrode 43 spaced apart. The second electrode 122 is connected to the same row of light-emitting elements 22 to independently control each light-emitting element 22. This allows each light-emitting element 22 to be finely controlled, improving control accuracy and display effect, and also facilitating timely replacement or repair of damaged light-emitting elements 22.

[0070] Furthermore, the light-emitting element 22 is electrically connected to the first connecting electrode 42 and the second connecting electrode 43, respectively, and the second connecting electrode 43 extends to one side of the light-emitting element 22; the first connecting electrode 42 is electrically connected to the second driving line 41; the first connecting electrode 42 can be a positive electrode, and the second connecting electrode 43 can be a negative electrode. Multiple rows of second driving lines 41 can be connected into a single unit. The second driving lines 41 and the first driving lines 123 can be arranged crosswise (e.g., perpendicularly) in the thickness direction of the backlight module 100, and are insulated from each other by the insulating layer 50.

[0071] In one embodiment, the insulating layer 50 may have multiple openings (not shown), each opening partially exposing a second connection electrode 43; each first driving line 123 is electrically connected to the first connection electrode 42 of the light-emitting element 22 in the same row through the opening. Each opening may be filled with a conductive material to conduct electricity between the first driving line 123 and each first connection electrode 42; the conductive material may be conductive adhesive or metal, etc.

[0072] like Figure 8As shown, for example, the circuit of the glass substrate 21 can first be provided with a negative driving electrode on the short edge, and a positive driving electrode is provided next to the solder joint of each light-emitting element 22. An opening is provided in the insulating layer 50 to expose the electrode. Then, the glass-based light strips 20 are spliced ​​and fixed in the manner described above. The electrodes exposed next to the solder joints of the light-emitting elements 22 are then connected in series using an external strip driving circuit board 44. Specifically, the external strip driving circuit board 44 can be connected by soldering or attaching a strip flexible circuit. In order to reduce the impact on the display effect, the electrodes next to the solder joints of the light-emitting elements 22 can also be set on the back of the strip light strip. In this way, a one-lamp-one-driver control mode can be realized. The series and parallel driving schemes of other glass-based light strips 20 can also be set, adjusted and adapted in this way. This application does not limit this.

[0073] The above configuration allows for individual control of each light-emitting element 22, thereby improving control accuracy. Furthermore, this individual control configuration facilitates the replacement and repair of any damaged individual light-emitting elements 22 in the future.

[0074] Please see Figures 9 to 10-2 , Figure 9 This is a top view of the backlight module provided in the fifth embodiment of this application; Figure 10-1 This application Figure 9 The schematic diagram of the cross-sectional structure along B'-B' provided in the image; Figure 10-2 This application Figure 9 The schematic diagram of the cross-sectional structure along CC is provided in the image.

[0075] In the fifth embodiment:

[0076] like Figure 9 , Figure 10-1 as well as Figure 10-2 As shown, a second conductive line layer 40 and an insulating layer 50 covering the second conductive line layer 40 are disposed on the glass substrate 21; the second conductive line layer 40 includes a first electrode 121 and a second electrode 122 for driving; the light-emitting element 22 is electrically connected to the first electrode 121 and the second electrode 122 respectively.

[0077] Specifically, the second conductive line layer 40 extends to one end of the glass substrate 21 and is partially exposed to form a driving electrode (not shown in the figure). The driving electrode includes a first electrode 121 and a second electrode 122. The light-emitting element 22 is disposed on the insulating layer 50 and is electrically connected to the second conductive line layer 40.

[0078] For example, the positive electrodes 221 of multiple glass-based lamp strips 20 can be connected to the first electrode 121 through a first conductive connector (not shown), and the negative electrodes 222 of multiple glass-based lamp strips 20 can all be connected to the second electrode 122 through a second conductive connector (not shown), allowing the multiple glass-based lamp strips 20 to be connected in parallel or in series. For example, the first electrode 121 and the second electrode 122 can be two parallel strip electrodes, such that the positive electrodes 221 of multiple glass-based lamp strips 20 are all connected to the first electrode 121 through the first conductive connector, and the negative electrodes 222 of multiple glass-based lamp strips 20 are all connected to the second electrode 122 through the second conductive connector. Here, the first electrode 121 can be a positive electrode, and the second electrode 122 can be a negative electrode.

[0079] like Figures 9 to 10-2 As shown, multiple glass-based lamp strips 20 are connected in series, allowing multiple light-emitting elements 22 to be turned on or off simultaneously, facilitating control of the multiple light-emitting elements 22. Specifically, the multiple glass-based lamp strips 20 can have multiple light-emitting elements 22 connected in series in each strip, with the negative electrode of the previous light-emitting element 22 serving as the positive electrode of the next light-emitting element 22. Adjacent glass-based lamp strips 20 can be connected in parallel or in series; or all light-emitting elements 22 of multiple glass-based lamp strips 20 can be connected in series, with adjacent glass-based lamp strips 20 connected in series. Connecting multiple glass-based lamp strips 20 in series allows multiple light-emitting elements 22 to be turned on or off simultaneously, facilitating unified control of the multiple light-emitting elements 22. Specifically, as... Figure 10-1 As shown, adjacent glass-based lamp strips 20 can be connected in series by connecting each first electrode 121 to the first conductive line layer 12. Specifically, this can be achieved by creating an opening (not shown) in the insulating layer 50, and then filling the opening with conductive material to form a first conductive portion 16 and a second conductive portion 17. One end of the first conductive portion 16 and the second conductive portion 17 are electrically connected to the first electrode 121, and the other end is connected to the first conductive line layer 12, thereby achieving series connection between adjacent glass-based lamp strips 20.

[0080] Please see Figures 11 to 12 , Figure 11 This is a side view structural diagram of the backlight module provided in the sixth embodiment of this application; Figure 12 This is a side view structural diagram of the backlight module provided in the seventh embodiment of this application.

[0081] In the sixth embodiment:

[0082] The assembly layer 10 may have multiple first openings 103, and each light-emitting element 22 is exposed and protrudes from one of the first openings 103. The first openings 103 can be pre-set after the assembly layer 10 is prepared; for example, the opening position of the first opening 103 corresponds to the position where the light-emitting element 22 is placed, so that the light-emitting element 22 can be accommodated and exposed during installation. Simultaneously, pre-setting the first openings 103 on the assembly layer 10 facilitates alignment when splicing multiple glass-based light strips 20.

[0083] Furthermore, a reflective layer 70 is also provided on the surface of the assembly layer 10 away from the glass substrate 21 to reflect the light from the light-emitting element 22 and improve the luminous efficiency. When the light-emitting element 22 emits light from the top, the reflective layer 70 can be disposed on the side of the second substrate layer 13 away from the first conductive line layer 12; when the light-emitting element 22 emits light from the bottom, the reflective layer 70 can be disposed on the side of the first substrate layer 11 away from the first conductive line layer 12. The reflective layer 70 can be formed by directly coating a reflective material onto the second substrate layer 13, or a separate reflective layer 70 can be provided; this application does not impose any limitations on this.

[0084] In the seventh embodiment:

[0085] like Figure 12 As shown, the assembly layer 10 can be further disposed on the back side of the glass-based light strip 20, wherein the assembly layer 10 extending to the back side of the glass-based light strip 20 may not have the first conductive line layer 12 disposed thereon. That is, the first substrate layer 11 and the second substrate layer 13 extend to the side and back side of the glass substrate 21, thereby improving the fixing effect of the assembly layer 10 on the glass-based light strip 20.

[0086] Please see Figures 13 to 16 , Figure 13 This application Figure 1 A side view structural diagram of a backlight module along a first direction is provided, which shows the structure of the first type of support layer; Figure 14 This application Figure 1 A side view of the backlight module along the second direction is provided, which shows the structure of the first type of support layer; Figure 15 This application Figure 1 A side view of the backlight module along the first direction is provided, which shows the structure of the second type of support layer; Figure 16 This application Figure 1 A side view of the backlight module along the second direction is provided, which shows the structure of the second type of support layer.

[0087] In one embodiment, such as Figures 13 to 16As shown, the backlight module 100 may also include a support layer 60 disposed on the side of the glass substrate 21 away from the light-emitting element 22. The support layer 60 includes multiple support plates 61. Considering the strength of the glass-based light strip 20 when using the thin-film splicing layer 10, a reinforcing structure (support layer 60) can be added to the splicing seam on the back of the glass substrate 21 of the strip glass-based light strip 20 for reinforcement. Since the bare glass substrate 300 cut during the production of the display panel 201 is originally a separable double-layer glass structure of the same size, and only one layer of bare glass substrate 300 is used to make the glass substrate 21, the other layer of bare glass substrate 300 will still be wasted. Therefore, it is preferred to use the other layer of bare glass substrate 300 as the support layer 60 of the reinforcing structure.

[0088] The support layer 60 may include, but is not limited to, the following two structures and configurations:

[0089] First type of support layer 60:

[0090] like Figures 13 and 14 As shown, multiple support plates 61 are arranged side by side, with the support plates 61 and the glass substrate 21 arranged in the same direction; a first splicing seam 23 is formed between adjacent glass-based lamp strips 20; a second splicing seam 611 is formed between adjacent support plates 61; wherein the first splicing seam 23 and the second splicing seam 611 are staggered along the thickness direction of the backlight module 100. That is, as Figure 14 As shown, since the two bare glass substrates 300 are the same size, the support plate 61 can be attached to the first splicing seam 23 on the back of the multiple spliced ​​glass substrates 20 in the same direction as the splicing direction of the glass substrate light strip 20. At the same time, the first splicing seam 23 and the second splicing seam 611 are misaligned along the thickness direction of the backlight module 100 to improve the strength of the large-size light panel (not shown in the figure) formed by splicing.

[0091] Second type of support layer 60:

[0092] like Figure 1 , Figures 15 to 16As shown, multiple glass substrates 21 are arranged sequentially along a first direction, where the first direction is the arrangement direction of the multiple glass substrates 21. A first splicing seam 23 is formed between adjacent glass-based light strips 20; a support plate 61 is arranged along a second direction, which is the direction intersecting the first direction, and the support plate 61 at least covers part of the first splicing seam 23, thereby reducing the workload of attaching the support plate 61. That is, the support plate 61 can be attached in the direction intersecting with the strip glass-based light strip 20, for example, along the direction perpendicular to or inclined to the first direction. The number of support plates 61 can be set to one or more rows as needed. For example, when the splicing direction dimension of the light strip is greater than the length of a single light strip, two or more rows of support plates 61 need to be set, and the seams of the support plates 61 in different rows need to be staggered. As another example, when the splicing direction dimension of the light strip is twice or more than the length of the light strip, support plates 61 can be continuously set in the same row. This can improve the strength of the light strip in the thin film assembly layer 10, and at the same time further improve the utilization rate of the bare glass substrate 300.

[0093] To address the aforementioned problems, this application also provides a display device 200.

[0094] Please see Figure 17 , Figure 17 This is a simplified structural diagram of a display device provided in an embodiment of this application.

[0095] In one embodiment, such as Figure 17 As shown, the display device 200 may include a display panel 201 and a backlight module 100; the backlight module 100 is electrically connected to the display panel 201 and is used to provide a light source for the display panel 201; wherein, the backlight module 100 is any of the backlight modules 100 mentioned above, which will not be described in detail here.

[0096] In one embodiment, the display panel 201 can be a liquid crystal display panel (LCD), an LED display panel 201, or an OLED display panel 201. The liquid crystal display panel 201 can include a mating substrate 2011, an array substrate 2012, and a liquid crystal layer 2013 disposed between the mating substrate 2011 and the array substrate 2012. The liquid crystal layer 2013 can include a plurality of liquid crystal molecules 2014. The mating substrate 2011 can specifically be a color filter substrate. The backlight module 100 includes a plurality of glass-based lamp strips 20 and an assembly layer 10 disposed on the surface of the glass substrate 21 near the light-emitting element 22. The assembly layer 10 is a self-supporting structure, which allows it to be produced individually and directly assembled after production, thereby improving production efficiency. The assembly layer 10 may include a first substrate layer 11 and a second substrate layer 13 disposed opposite to each other, and a first conductive line layer 12 disposed between the first substrate layer 11 and the second substrate layer 13; the first conductive line layer 12 is sandwiched between the first substrate layer 11 and the second substrate layer 13 for connecting and driving multiple strip glass-based light bars 20. The first substrate layer 11 and the second substrate layer 13 may be made of polyimide or similar resin materials; the first conductive line layer 12 may be made of copper, aluminum, or similar conductive materials. For specific structural details, please refer to the foregoing description; further details will not be repeated here.

[0097] The backlight module disclosed in this application includes: multiple glass-based LED strips and an assembly layer. Each glass-based LED strip includes a glass substrate and a light-emitting element. The assembly layer is disposed on the surface of the glass substrate near the light-emitting element and is fixed to the glass substrate. The assembly layer is a self-supporting structure. This application supports the glass-based LED strips by disposing the assembly layer on the surface of the glass substrate near the light-emitting element. Simultaneously, the assembly layer can cover the seams between multiple spliced ​​glass-based LED strips, making the seams invisible from the front of the display panel, achieving a "seamless splicing" effect. Furthermore, multiple glass-based LED strips can be spliced ​​to form a large-size lamp panel, which not only improves the utilization rate of the bare glass substrate but also reduces the yield loss of the lamp panel; and the manufacturing process is simple.

[0098] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations 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 patent protection scope of this application.

Claims

1. A backlight module, characterized in that, include: Multiple glass-based light strips, each of which includes a glass substrate and a light-emitting element; An assembly layer is disposed on the surface of the glass substrate near the light-emitting element and is fixed to the glass substrate; wherein, the assembly layer is a self-supporting structure; The assembly layer includes: A first substrate layer, a second substrate layer, and a first conductive line layer disposed between the first substrate layer and the second substrate layer are disposed opposite to each other; The first conductive circuit layer includes a first electrode and a second electrode, which are electrically connected to the light-emitting element.

2. The backlight module according to claim 1, characterized in that, The assembly layer has through holes through which the light-emitting element is exposed; wherein the first electrode and the second electrode are electrically connected to the corresponding electrodes of the light-emitting element through vias; or, The assembly layer has a groove, with a portion of the second substrate layer serving as the bottom wall of the groove and sealing the light-emitting element; wherein the second substrate layer is made of a light-transmitting material; or, The light-emitting element is attached to the glass substrate, and the electrode pair of the light-emitting element is disposed on the side of the light-emitting element away from the glass substrate, and is electrically connected to the first electrode and the second electrode in a one-to-one correspondence; wherein, the light-emitting element emits light towards the side of the glass substrate.

3. The backlight module according to claim 1, characterized in that, The assembly layer includes a first substrate layer, a second substrate layer disposed opposite to each other, and a first conductive line layer disposed between the first substrate layer and the second substrate layer; the first conductive line layer includes a first electrode; The glass substrate has a second conductive circuit layer and an insulating layer covering the second conductive circuit layer; the second conductive circuit layer includes a second electrode. The light-emitting element has a vertical structure with a first contact electrode at the top and a second contact electrode at the bottom; the first contact electrode is electrically connected to the first electrode, and the second contact electrode is electrically connected to the second electrode, so that the first conductive line layer and the second conductive line layer cooperate to drive the light-emitting element.

4. The backlight module according to claim 3, characterized in that, The first substrate layer has a first opening to expose the first electrode; the insulating layer has a second opening to expose the second electrode; the first contact electrode and the first electrode, and the second contact electrode and the second electrode are both electrically connected by a conductive agent. or, The first substrate layer and the conductive line layer have a first opening, and the second substrate layer has a second opening communicating with the first opening, the first opening and the second opening exposing the light-emitting element; The second opening is larger than the first opening to expose the side of the first electrode away from the first substrate layer; The first contact electrode and the exposed portion of the first electrode are electrically connected by a conductive agent, and the second contact electrode and the second electrode are electrically connected by a conductive agent.

5. The backlight module according to claim 3, characterized in that, The plurality of light-emitting elements of each glass-based light strip are arranged in a column, and the plurality of light-emitting elements of the plurality of glass-based light strips are arranged in multiple rows and columns; there are multiple first conductive lines, and each first conductive line layer further includes a first driving line electrically connected to each first electrode, and each first electrode is connected to the light-emitting elements in the same row through the first contact electrode; The second conductive circuit layer further includes a second driving circuit electrically connected to the second electrode, and a first connecting electrode and a second connecting electrode spaced apart. The second electrode is connected to the same column of light-emitting elements to independently control each light-emitting element. The light-emitting elements are electrically connected to the first connecting electrode and the second connecting electrode, respectively, and the second connecting electrode extends to one side of the light-emitting element. The first connecting electrode is electrically connected to the second driving circuit. The insulating layer has a plurality of openings, each opening exposing a portion of the second connection electrode; each of the first drive lines is electrically connected to the first connection electrode of the light-emitting element in the same row through the opening.

6. The backlight module according to claim 1, characterized in that, The glass substrate has a second conductive line layer and an insulating layer covering the second conductive line layer; the second conductive line layer includes a first electrode and a second electrode; the light-emitting element is electrically connected to the first electrode and the second electrode respectively.

7. The backlight module according to claim 1, characterized in that, The assembly layer has multiple openings, and each of the light-emitting elements is exposed and protrudes from one of the openings; A reflective layer is also provided on the surface of the assembly layer away from the glass substrate.

8. The backlight module according to any one of claims 1 to 7, characterized in that, Also includes: A support layer is disposed on the side of the glass substrate away from the light-emitting element, and the support layer includes a plurality of support plates; wherein, Multiple support plates are arranged side by side, and the support plates and the glass substrate are arranged in the same direction; a first splicing seam is formed between adjacent glass-based light strips; a second splicing seam is formed between adjacent support plates; wherein the first splicing seam and the second splicing seam are staggered along the thickness direction of the backlight module; or, Multiple glass substrates are arranged sequentially along a first direction, and a first splicing seam is formed between adjacent glass substrate light strips; a support plate is arranged along a direction intersecting the first direction, and the support plate at least covers part of the first splicing seam; wherein, the first direction is the arrangement direction of the multiple glass substrates.

9. A display device, characterized in that, include: Display panel; A backlight module, electrically connected to the display panel, is used to provide a light source for the display panel; wherein the backlight module is the backlight module according to any one of claims 1 to 8.

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