Backlight module and display

Abstract

This application discloses a backlight module and a display screen. The backlight module includes: multiple backlight substrates spliced ​​together; an elastic member disposed at the splicing point of two adjacent backlight substrates, with the elastic member located between the two adjacent backlight substrates; and a reflective layer disposed on the surface of the elastic member away from the backlight substrates. The reflective layer includes multiple reflective particles, each of which is connected to the elastic member, and adjacent reflective particles are independently disposed. Based on the above method, the image quality of the display screen in which the backlight module is located can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to backlight modules and displays. Background Technology

[0002] In the prior art, a backlight module can be composed of multiple backlight substrates spliced ​​together. There is usually a certain gap between any two adjacent backlight substrates. When the gap is large, it usually causes the display screen to have corresponding dark bands, and when the gap is small, it usually causes the display screen to have corresponding bright bands. Since the backlight substrate is prone to changes in size due to thermal expansion and contraction or other reasons, the size of the gap will change, resulting in corresponding dark bands and / or bright bands on the display screen where the backlight module is located, thus making the image quality of the display screen where the backlight module is located poor. Summary of the Invention

[0003] The main technical problem addressed in this application is how to improve the image quality of the display screen where the backlight module is located.

[0004] To solve the above-mentioned technical problems, the first technical solution adopted in this application is: a backlight module, comprising: a plurality of backlight substrates spliced ​​together; an elastic element disposed at the splicing point of two adjacent backlight substrates, and the elastic element being located between two adjacent backlight substrates; a reflective layer disposed on the surface of the elastic element away from the backlight substrate, wherein the reflective layer comprises a plurality of reflective particles, each reflective particle being connected to the elastic element, and two adjacent reflective particles being independently disposed from each other.

[0005] The joint between two adjacent backlight substrates has a filling groove, and the elastic element is disposed in the filling groove.

[0006] In this case, the volume of the elastic element in any two filling grooves is equal.

[0007] In this embodiment, a first connector is provided on the side wall of one of the two adjacent backlight substrates, and a second connector is provided on the side wall of the other of the two adjacent backlight substrates. The first connector and the second connector are snapped together.

[0008] The first connector is a protrusion, and the second connector is a groove. The protrusion and the groove are engaged.

[0009] The first connector and the second connector are snapped together, and a filling groove is formed between two adjacent backlight substrates. The surface of the snap-fit ​​structure formed by the first connector and the second connector is the bottom of the filling groove, and the elastic element is set in the filling groove.

[0010] Among them, the absorbance of the elastic element is greater than the preset absorbance threshold.

[0011] Wherein, when the width of the filling groove is less than a preset width threshold, the surface of the corresponding elastic element is an arc surface; the width of the filling groove is the inner cavity width of the filling groove in the corresponding target direction, and the target direction is the direction from one backlight substrate toward another adjacent backlight substrate.

[0012] Among them, the light absorption of the elastic element is greater than the preset light absorption threshold; among the multiple reflective particles on the surface of the elastic element, there is a gap between adjacent reflective particles, and the elastic element is exposed through the gap.

[0013] To solve the above-mentioned technical problems, the second technical solution adopted in this application is: a display screen, including a back panel and the aforementioned backlight module.

[0014] The beneficial effects of this application are as follows: Unlike existing technologies, in the technical solution of this application, multiple backlight substrates are spliced ​​together, and corresponding elastic elements are provided at the splicing points of two adjacent backlight substrates. These elastic elements are located between the two adjacent backlight substrates. A reflective layer is disposed on the surface of the elastic element away from the backlight substrate. The reflective layer includes multiple reflective particles, each of which is connected to the elastic element, and adjacent reflective particles are independently disposed. Through this structure, when the gap between two adjacent backlight substrates is large, the elastic element located at that gap is stretched, causing the multiple reflective particles on the elastic element to collectively form a reflective plane, increasing the light intensity at that gap. Furthermore, when the gap between two adjacent backlight substrates is small, the elastic element located at that gap is compressed, causing the surface of the elastic element to be compressed and form an arc surface. This causes the multiple reflective particles on the arc surface to separate from each other. Through the reflective arc surface formed by the multiple reflective particles, the light at that gap is scattered, reducing the light intensity at that gap. Based on the above method, the light intensity at the splicing point of two adjacent backlight substrates can be adaptively changed with the change of the corresponding gap size, avoiding dark bands and / or bright bands in the display screen where the backlight module is located, thereby improving the image quality of the display screen where the backlight module is located. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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 the present invention. 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 one embodiment of the multiple backlight substrates of this application;

[0017] Figure 2 This is one of the cross-sectional structural schematic diagrams of an embodiment of the backlight module of this application;

[0018] Figure 3 This is a second cross-sectional structural schematic diagram of an embodiment of the backlight module of this application;

[0019] Figure 4 This is one of the cross-sectional structural schematic diagrams of another embodiment of the backlight module of this application;

[0020] Figure 5 This is a second cross-sectional structural schematic diagram of another embodiment of the backlight module of this application;

[0021] Figure 6 This is a schematic diagram of the structure of one embodiment of the display screen of this application.

[0022] Reference numerals: backlight substrate 11, light source 111, elastic element 121, reflective layer 122, reflective particles 1221, filling groove 123, first connector 124, second connector 125, display screen 20, back plate 21, backlight module 22. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0024] 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 mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] In the description of this application, it is necessary to specify that, unless otherwise expressly stated and limited, the terms "installation," "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms within the context of this application.

[0026] This application first discloses a backlight module, see [link to relevant documentation] Figures 1 to 3 , Figure 1 This is a top view schematic diagram of one embodiment of the multiple backlight substrates of this application. Figure 2This is one of the cross-sectional structural schematic diagrams of an embodiment of the backlight module of this application. Figure 3 This is a second cross-sectional structural schematic diagram of an embodiment of the backlight module of this application, as shown below. Figures 1 to 3 As shown, the backlight module includes multiple backlight substrates 11, elastic elements 121, and reflective layers 122.

[0027] Adjacent backlight substrates 11 are spliced ​​together, and each backlight substrate can be provided with multiple light sources 111. Specifically, the multiple light sources 111 can be arranged in an array or other manner. In addition, the light source 111 can be MicroLED, other types of LEDs, LED beads of MicroLED size, or other types of light-emitting components, depending on the actual needs, and is not limited here.

[0028] The elastic element 121 is disposed between the joint of two adjacent backlight substrates 11, and the elastic element 121 is located between the two adjacent backlight substrates 11. Specifically, the elastic element 121 can be stretched when the distance between the two adjacent backlight substrates 11 increases, so that the surface of the elastic element 121 tends to be flat (e.g., Figure 2 The elastic element 121 shown is compressed when the distance between two adjacent backlight substrates 11 decreases, causing the surface of the elastic element 121 to tend towards an arc surface (e.g., Figure 3 The elastic element 121 shown. The elastic element can be a rubber part, specifically a dark-colored rubber part.

[0029] A reflective layer 122 is disposed on the surface of the elastic member 121 on the side away from the backlight substrate 11, and the reflective layer 122 includes a plurality of reflective particles 1221, each of which is connected to the elastic member 121, and adjacent reflective particles 1221 are disposed independently of each other. Specifically, each reflective particle 1221 can be bonded to the elastic member 121, and it is ensured that any two adjacent reflective particles 1221 in the reflective layer 122 are not connected.

[0030] Figure 2 The spacing between adjacent backlight substrates 11 shown is greater than Figure 3 The spacing between adjacent backlight substrates 11 shown.

[0031] like Figure 2As shown, when the distance between two adjacent backlight substrates 11 is large, i.e., the gap between two adjacent backlight substrates 11 is large, the elastic member 121 located between the two adjacent backlight substrates 11 can be stretched until its surface tends to be flat. It should be noted that the flatter the surface of the elastic member 121 away from the backlight substrate 11, the flatter the surface of the reflective layer 122 on that surface. This allows the light reflected by the reflective layer 122 to be concentrated and emitted onto the display screen at the position corresponding to the splicing point. This achieves the technical effect that the greater the distance between two adjacent backlight substrates 11, the greater the light intensity at the display screen position corresponding to the splicing point of the two adjacent backlight substrates 11. Based on the above method, it is possible to avoid the occurrence of corresponding dark bands on the display screen when the distance between two adjacent backlight substrates 11 is large.

[0032] like Figure 3 As shown, when the spacing between two adjacent backlight substrates 11 is small, i.e., the gap between two adjacent backlight substrates 11 is small, the elastic member 121 located between the two adjacent backlight substrates 11 can be squeezed until its surface tends to be curved. It should be noted that the more curved the surface of the elastic member 121 is away from the backlight substrate 11, the more curved the surface of the reflective layer 122 on that surface becomes. This allows the reflective particles 1221 on the reflective layer 122 to be spaced apart, and the elastic member 121 is exposed through the gaps between the reflective particles 1221. The curved reflective layer 122 can scatter the light reflected by the reflective layer 122 at the splicing point, reducing the light intensity of the light reflected by the reflective layer 122. When the color of the elastic member 121 is dark, the light intensity at the splicing point can be further reduced by the exposed elastic member 121. This achieves the technical effect that the smaller the spacing between two adjacent backlight substrates 11, the lower the light intensity at the display screen position corresponding to the splicing point of the two adjacent backlight substrates 11. Based on the above method, it is possible to avoid the occurrence of corresponding bright bands on the display screen when the spacing between two adjacent backlight substrates 11 is small.

[0033] Unlike existing technologies, in this application, multiple backlight substrates are spliced ​​together, and corresponding elastic elements are provided at the splicing points of two adjacent backlight substrates. These elastic elements are located between the two adjacent backlight substrates. A reflective layer is disposed on the surface of the elastic element away from the backlight substrate. The reflective layer includes multiple reflective particles, each connected to an elastic element, with adjacent reflective particles independently positioned. This structure allows for several advantages: when the gap between two adjacent backlight substrates is large, the elastic element at that gap is stretched, causing the multiple reflective particles on the elastic element to collectively form a reflective plane, increasing the light intensity at that gap. Conversely, when the gap between two adjacent backlight substrates is small, the elastic element at that gap is compressed, causing its surface to form an arc surface. This allows the multiple reflective particles on the arc surface to separate, scattering the light at that gap through the reflective arc surface formed by the multiple reflective particles, thus reducing the light intensity at that gap. Based on the above method, the light intensity at the splicing point of two adjacent backlight substrates can be adaptively changed with the change of the corresponding gap size, avoiding dark bands and / or bright bands in the display screen where the backlight module is located, thereby improving the image quality of the display screen where the backlight module is located.

[0034] In one embodiment, such as Figure 2 and Figure 3 As shown, the splicing point of two adjacent backlight substrates 11 has a filling groove 123, and the elastic member 121 is disposed in the filling groove 123.

[0035] Specifically, the splicing joint of the backlight substrate 11 can be as follows: Figure 2 In the two-stage stepped structure shown, after two adjacent backlight substrates 11 are spliced ​​together, the first-stage step A of the two-stage stepped structure contacts each other to form the bottom of the filling groove 123, while the second-stage step B of the two-stage stepped structure forms the sidewall of the filling groove 123, thereby forming a filling groove 123 for accommodating the elastic member 121.

[0036] Based on the above method, a filling groove 123 can be constructed between two adjacent backlight substrates 11 to accommodate the elastic element 121, and the position of the elastic element 121 is restricted to avoid the elastic element 121 from shifting during use, thereby improving the reliability of the backlight module.

[0037] Optionally, the volume of the elastic element 121 in any two filling grooves 123 is equal.

[0038] Specifically, each backlight substrate 11 can be a substrate of the same size manufactured according to the same manufacturing process. However, in practice, due to manufacturing tolerances, it cannot be ensured that each backlight substrate 11 is exactly the same. This results in the volume of the filling groove 123 between two adjacent backlight substrates 11 in different groups being different at the same temperature, and the spacing between the two adjacent backlight substrates 11 corresponding to each group is also different.

[0039] Therefore, the same volume of elastic element 121 can be filled in different filling slots 123. Thus, in the filling slots 123 with smaller volume corresponding to smaller spacing, the shape of elastic element 121 will be more curved, and the reflective layer 122 on elastic element 121 will have weaker reflectivity. In the filling slots 123 with larger volume corresponding to larger spacing, the shape of elastic element 121 will be more planar, and the reflective layer 122 on elastic element 121 will have stronger reflectivity.

[0040] Based on the above method, by making the volume of the elastic element 121 in any two filling slots 123 equal, the light intensity at the splicing point between adjacent backlight substrates 11 with a smaller spacing due to manufacturing tolerance is weaker, while the light intensity at the splicing point between adjacent backlight substrates 11 with a larger spacing due to manufacturing tolerance is stronger. The light intensity at the splicing point between adjacent backlight substrates 11 due to manufacturing tolerance is adaptively adjusted to avoid the generation of dark bands and / or bright bands at the splicing point, thereby further improving the image quality of the display screen where the backlight module is located.

[0041] In one embodiment, see Figure 4 and Figure 5 , Figure 4 This is one of the cross-sectional structural schematic diagrams of another embodiment of the backlight module of this application. Figure 5 This is a second cross-sectional structural schematic diagram of another embodiment of the backlight module of this application, as shown below. Figure 4 and Figure 5 A first connector 124 is provided on the side wall of one of the two adjacent backlight substrates 11, and a second connector 125 is provided on the side wall of the other backlight substrate 11. The first connector 124 and the second connector 125 are snapped together.

[0042] Specifically, by connecting two adjacent backlight substrates 11 through a first connector 124 and a second connector 125, the edge of a single backlight substrate 11 is prevented from lifting when it is moved, thereby improving the reliability of the backlight module.

[0043] Optionally, the first connector 124 is a protrusion and the second connector 125 is a groove, with the protrusion and groove engaging.

[0044] Specifically, by using the interlocking of protrusions and grooves, the side of each backlight substrate 11 can maintain its original state due to the interlocking effect of adjacent backlight substrates 11, thus preventing the backlight substrate 11 from warping due to heating, collision or other factors during use.

[0045] Optionally, such as Figure 5 As shown, the first connector 124 and the second connector 125 are snapped together, and a filling groove 123 is formed between two adjacent backlight substrates 11. The surface of the snap-fit ​​structure formed by the first connector 124 and the second connector 125 is the bottom of the filling groove 123, and the elastic member 121 is disposed in the filling groove 123.

[0046] It should be noted that, with Figure 2 and Figure 3 similar, Figure 4 The spacing between adjacent backlight substrates 11 shown is greater than Figure 5 The spacing between adjacent backlight substrates 11 shown.

[0047] like Figure 4 As shown, when the distance between two adjacent backlight substrates 11 is large, i.e., the gap between two adjacent backlight substrates 11 is large, the elastic member 121 located between the two adjacent backlight substrates 11 can be stretched until its surface tends to be flat. It should be noted that the flatter the surface of the elastic member 121 away from the backlight substrate 11, the flatter the surface of the reflective layer 122 on that surface. This allows the light reflected by the reflective layer 122 to be concentrated and emitted onto the display screen at the position corresponding to the splicing point. This achieves the technical effect that the greater the distance between two adjacent backlight substrates 11, the greater the light intensity at the display screen position corresponding to the splicing point of the two adjacent backlight substrates 11. Based on the above method, it is possible to avoid the occurrence of corresponding dark bands on the display screen when the distance between two adjacent backlight substrates 11 is large.

[0048] like Figure 5As shown, when the spacing between two adjacent backlight substrates 11 is small, i.e., the gap between two adjacent backlight substrates 11 is small, the elastic member 121 located between the two adjacent backlight substrates 11 can be squeezed until its surface tends to be curved. It should be noted that the more curved the surface of the elastic member 121 is away from the backlight substrate 11, the more curved the surface of the reflective layer 122 on that surface becomes. This allows the reflective particles 1221 on the reflective layer 122 to be spaced apart, and the elastic member 121 is exposed through the gaps between the reflective particles 1221. The curved reflective layer 122 can scatter the light reflected by the reflective layer 122 at the splicing point, reducing the light intensity of the light reflected by the reflective layer 122. When the color of the elastic member 121 is dark, the light intensity at the splicing point can be further reduced by the exposed elastic member 121. This achieves the technical effect that the smaller the spacing between two adjacent backlight substrates 11, the lower the light intensity at the display screen position corresponding to the splicing point of the two adjacent backlight substrates 11. Based on the above method, it is possible to avoid the occurrence of corresponding bright bands on the display screen when the spacing between two adjacent backlight substrates 11 is small.

[0049] In one embodiment, the absorbance of the elastic element 121 is greater than a preset absorbance threshold.

[0050] Specifically, the elastic element 121 can be a dark-colored elastic element with an absorbance greater than a preset absorbance threshold, specifically a dark-colored rubber element.

[0051] The elastic element 121 can absorb light at the splicing point when it is exposed, thereby reducing the light intensity at the splicing point. This reduces the light intensity at the splicing point between adjacent backlight substrates 11 with small spacing, avoids the appearance of corresponding bright bands, and improves the image quality of the display screen where the backlight module is located.

[0052] In one embodiment, such as Figure 3 As shown in Figure 5, when the width of the filling groove 123 described in any of the preceding embodiments is less than a preset width threshold, the surface of the corresponding elastic element 121 is an arc surface.

[0053] The width of the filling groove 123 is the inner cavity width of the filling groove 123 in the corresponding target direction D1, where the target direction D1 is the direction from one backlight substrate 11 toward the adjacent other backlight substrate 11.

[0054] Optionally, the absorbance of the elastic element 121 is greater than a preset absorbance threshold.

[0055] like Figure 3 As shown in Figure 5, among the multiple reflective particles 1221 on the surface of the elastic element 121, which is arc-shaped, there is a gap between adjacent reflective particles 1221, and the elastic element 121 is exposed through the gap.

[0056] The elastic element 121 can absorb light at the splicing point when it is exposed, thereby reducing the light intensity at the splicing point. This reduces the light intensity at the splicing point between adjacent backlight substrates 11 with small spacing, avoids the appearance of corresponding bright bands, and improves the image quality of the display screen where the backlight module is located.

[0057] This application also proposes a display screen, see [link to relevant documentation] Figure 6 , Figure 6 This is a schematic diagram of the structure of an embodiment of the display screen of this application, as shown below. Figure 6 As shown, the display screen 20 includes a back panel 21 and a backlight module 22. The backlight module 22 can be any of the backlight modules described in the previous embodiments, which will not be repeated here.

[0058] Unlike existing technologies, in this application, multiple backlight substrates are spliced ​​together, and corresponding elastic elements are provided at the splicing points of two adjacent backlight substrates. These elastic elements are located between the two adjacent backlight substrates. A reflective layer is disposed on the surface of the elastic element away from the backlight substrate. The reflective layer includes multiple reflective particles, each connected to an elastic element, with adjacent reflective particles independently positioned. This structure allows for several advantages: when the gap between two adjacent backlight substrates is large, the elastic element at that gap is stretched, causing the multiple reflective particles on the elastic element to collectively form a reflective plane, increasing the light intensity at that gap. Conversely, when the gap between two adjacent backlight substrates is small, the elastic element at that gap is compressed, causing its surface to form an arc surface. This allows the multiple reflective particles on the arc surface to separate, scattering the light at that gap through the reflective arc surface formed by the multiple reflective particles, thus reducing the light intensity at that gap. Based on the above method, the light intensity at the splicing point of two adjacent backlight substrates can be adaptively changed with the change of the corresponding gap size, avoiding dark bands and / or bright bands in the display screen where the backlight module is located, thereby improving the image quality of the display screen where the backlight module is located.

[0059] In the description of this application, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" 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.

[0061] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0062] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (which may be a personal computer, server, network device, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0063] 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 backlight substrates spliced ​​together; An elastic element is disposed at the splicing point of two adjacent backlight substrates, and the elastic element is located between the two adjacent backlight substrates; A reflective layer is disposed on the surface of the elastic element away from the backlight substrate. The reflective layer includes a plurality of reflective particles, each of which is connected to the elastic element. Adjacent reflective particles are disposed independently of each other, and no two adjacent reflective particles in the reflective layer are connected.

2. The backlight module according to claim 1, characterized in that, The joint between two adjacent backlight substrates has a filling groove, and the elastic element is disposed in the filling groove.

3. The backlight module according to claim 2, characterized in that, The volume of the elastic element in any two of the filling grooves is equal.

4. The backlight module according to claim 1, characterized in that, A first connector is provided on the side wall of one of the two adjacent backlight substrates, and a second connector is provided on the side wall of the other of the two adjacent backlight substrates. The first connector and the second connector are snapped together.

5. The backlight module according to claim 4, characterized in that, The first connector is a protrusion, and the second connector is a groove, with the protrusion engaging with the groove.

6. The backlight module according to claim 4 or 5, characterized in that, The first connector and the second connector are snapped together, and a filling groove is formed between two adjacent backlight substrates. The surface of the snap-fit ​​structure formed by the first connector and the second connector is the bottom of the filling groove, and the elastic element is disposed in the filling groove.

7. The backlight module according to any one of claims 1 to 5, characterized in that, The absorbance of the elastic element is greater than a preset absorbance threshold.

8. The backlight module according to claim 2, characterized in that, When the width of the filling groove is less than a preset width threshold, the surface of the corresponding elastic element is an arc surface; The width of the filling groove is the inner cavity width of the filling groove in the corresponding target direction, which is the direction from one of the backlight substrates toward the adjacent other backlight substrate.

9. The backlight module according to claim 8, characterized in that, The absorbance of the elastic element is greater than a preset absorbance threshold. Among the multiple reflective particles on the elastic element with a curved surface, there is a gap between adjacent reflective particles, and the elastic element is exposed through the gap.

10. A display screen, characterized in that, Includes a backplate and a backlight module as described in any one of claims 1 to 9.

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