Light-emitting device, backlight module and display apparatus

Abstract

A light-emitting device (100), a backlight module and a display apparatus. The light-emitting device (100) comprises a lamp bead (200) and a lens (300), wherein the lamp bead (200) comprises a support (10) and a light-emitting body (20), the light-emitting body (20) being arranged on the support (10); and the lens (300) covers the light-emitting body (20), and the lens (300) is connected to the support (10).

Description

Light-emitting device, backlight module and display device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 29, 2023, with application number 202322679020.3 and utility model name “Light-emitting device, backlight module and display device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of display technology, and in particular to a light-emitting device, a backlight module and a display apparatus. Background Art

[0003] With the development of display devices, the requirements for the luminous effect of backlight modules are getting higher and higher. The backlight solution usually adopts a combination of lamp beads and lenses, which can effectively improve the utilization rate of light and reduce the use of lamp beads.

[0004] Existing installation methods for covering lamp beads with lenses often involve first mounting multiple lamp beads on a backlight panel, then attaching lenses to each of them one by one, and finally securing the lens to the backlight panel. This entire assembly process is complex and inefficient. Because the lens needs to extend to the backlight panel, it is bulky, typically with a diameter greater than 6mm, taking up a lot of space and increasing processing costs. Technical issues

[0005] Since the lens needs to extend to the backlight panel, the lens is relatively large, generally with a diameter greater than 6 mm, which occupies a large space and has high processing costs. Technical Solutions

[0006] In a first aspect, an embodiment of the present application provides a light-emitting device, comprising:

[0007] A lamp bead, comprising a bracket and a light-emitting body, wherein the light-emitting body is arranged on the bracket;

[0008] The lens is covered on the light emitting body and is connected to the bracket.

[0009] In a second aspect, an embodiment of the present application further provides a backlight module, comprising:

[0010] circuit boards;

[0011] A plurality of light-emitting devices are provided on the circuit board, and the light-emitting devices include:

[0012] A lamp bead, comprising a bracket and a light-emitting body, wherein the light-emitting body is arranged on the bracket;

[0013] The lens is covered on the light emitting body and is connected to the bracket.

[0014] In a third aspect, an embodiment of the present application further provides a display device, including a backlight module, wherein the backlight module includes:

[0015] circuit boards;

[0016] A plurality of light-emitting devices are provided on the circuit board, and the light-emitting devices include:

[0017] A lamp bead, comprising a bracket and a light-emitting body, wherein the light-emitting body is arranged on the bracket;

[0018] The lens is covered on the light emitting body and is connected to the bracket. Beneficial effects

[0019] The light-emitting device provided in the present application includes a lamp bead and a lens. The lamp bead includes a bracket and a light-emitting body. The light-emitting body is arranged on the lens. The lens cover is arranged on the light-emitting body. The lens is connected to the bracket. As can be seen, the lens is directly connected to the bracket of the lamp bead, and the required lens size is small, which can reduce the space occupied by the entire light-emitting device. In addition, after the lamp bead is produced, the lens is fixed on it to form the light-emitting device, replacing the subsequent process of attaching lenses to the lamp bead one by one and then fixing the lens to the backlight panel, which can improve processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a schematic structural diagram of a light-emitting device provided in an embodiment of the present application.

[0021] FIG2 is a schematic diagram of the structure of a lens provided in an embodiment of the present application.

[0022] FIG3 is a schematic structural diagram of a bracket provided in an embodiment of the present application.

[0023] FIG4 is a schematic diagram of a first structure of a lens provided in an embodiment of the present application.

[0024] FIG5 is a schematic diagram of the installation process of the light-emitting device provided in an embodiment of the present application.

[0025] FIG6 is an enlarged schematic diagram of a portion A in FIG4 .

[0026] FIG7 is a schematic diagram of a second structure of a lens provided in an embodiment of the present application.

[0027] FIG8 is an enlarged schematic diagram of a portion B of FIG4 .

[0028] FIG9 is a schematic structural diagram of a backlight module provided in an embodiment of the present application.

[0029] Implementation Methods of the Application

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0031] With the development of display devices, the requirements for the luminous effect of backlight modules are getting higher and higher. The backlight solution usually adopts a combination of lamp beads and lenses, which can effectively improve the utilization rate of light and reduce the use of lamp beads.

[0032] The present application provides a light emitting device, a backlight module, and a display device, wherein the light emitting device occupies a small space and has high processing efficiency. Detailed description will be given below with reference to the accompanying drawings.

[0033] Please refer to FIG1 , which is a schematic structural diagram of a light-emitting device provided in an embodiment of the present application.

[0034] The embodiment of the present application provides a light emitting device 100, which includes a lamp bead 200 and a lens 300. The lamp bead 200 includes a bracket 10 and a light emitting body 20, and the light emitting body 20 is disposed on the bracket 10. The lens 300 is covered on the light emitting body 20 and connected to the bracket 10.

[0035] The light emitting element 20 may be an LED (Light Emitting Diode) chip. The bracket 10 serves to accommodate, support, and fix the light emitting element 20. The lens 300 may be disposed on the light emitting element 20 to adjust the light emitting angle of the light emitting element 20.

[0036] In the light-emitting device 100 provided in the present application, the light-emitting device 100 includes a lamp bead 200 and a lens 300. The lamp bead 200 includes a bracket 10 and a light-emitting body 20. The light-emitting body 20 is arranged on the lens 300. The lens 300 is covered on the light-emitting body 20, and the lens 300 is connected to the bracket 10. Therefore, the lens 300 is directly connected to the bracket 10 of the lamp bead 200. The required size of the lens 300 is small, which can reduce the space occupied by the entire light-emitting device 100. In addition, after the lamp bead 200 is produced, the lens 300 is fixed thereon to form the light-emitting device 100, replacing the subsequent process of mounting the lenses 300 on the lamp bead 200 one by one and then fixing the lenses 300 on the backlight panel, which can improve processing efficiency.

[0037] It is worth noting that in the embodiment of the present application, the lens 300 is directly connected to the lamp bead 200. The size of the lens 300 is close to that of the lamp bead 200, and can be reduced to 3mm or even smaller, thus occupying a smaller space. In contrast, the number of light-emitting elements per unit area is greater, which helps to improve the brightness of the backlight module equipped with the light-emitting device 100.

[0038] The bracket 10 can play a role in supporting installation. The bracket 10 has a bowl-shaped material trough, and the bottom of the material trough is plated with a first conductive layer and a second conductive layer, which can be used as a positive electrode pad and a negative electrode pad, respectively, for electrically connecting to an external power supply device. The material trough can be used to accommodate the light-emitting body 20, and the light-emitting body 20 is used to emit light. As a light source, the positive electrode and the negative electrode of the light-emitting body 20 are electrically connected to the first conductive layer and the second conductive layer, respectively. Specifically, two metal wires can be provided, wherein the two ends of one metal wire are respectively used to connect the positive electrode and the first conductive layer of the light-emitting body 20, and the two ends of the other metal wire are respectively used to connect the negative electrode and the second conductive layer of the light-emitting body 20, thereby realizing circuit connection between the light-emitting body 20 and the first conductive layer and the second conductive layer, and realizing circuit conduction of the light-emitting body 20.

[0039] The light emitting device 100 further includes a packaging adhesive, which is disposed in a material placement groove, specifically disposed around and on the upper surface of the light emitting body 20 to play a role in packaging and protection.

[0040] The installation scheme of the related lamp bead plus lens is often to mold a resin lens onto the lamp bead. Although this can improve the above situation, the resin lens molded on the lamp bead will be set close to the outer surface of the lamp bead. There is no gap between the lens and the lamp bead, and there is no cannonball hole to improve the uniformity of light. Therefore, the utilization rate of light in this scheme is significantly lower than that of the lamp bead plus lens installation scheme. Among them, please refer to Figure 2, which is a structural schematic diagram of the lens provided in the embodiment of the present application. A blind hole 3 is provided on the lens 300, and the hole wall of the blind hole 3 is a curved surface. When the lens 300 is covered on the light-emitting body 20, the light-emitting body 20 is located inside the blind hole 3, and the light emitted by the light-emitting body 20 can be refracted or reflected on the hole wall of the blind hole 3. By adjusting the shape of the hole wall, the path of the light emitted by the light-emitting body 20 can be adjusted, so the utilization rate of light can be improved and the uniformity of light can be achieved. Since the shape of the blind hole 3 is similar to a cannonball, the blind hole 3 is also called a cannonball hole.

[0041] Please refer to Figure 3, which is a schematic diagram of the structure of a bracket provided in an embodiment of the present application. In some embodiments, the bracket 10 is provided with a first groove 14. The lens 300 extends toward the bracket 10 to form a snap 32. The snap 32 engages with the first groove 14 to secure the relative position of the lens 300 and the light-emitting element 20. This light-emitting device 100 enables simple alignment of the light-emitting element 20 and the lens 300, reducing assembly complexity and facilitating disassembly and maintenance. Specifically, the bracket 10 has a first surface 11, a second surface 12, and a side surface 13. The first surface 11 and the second surface 12 are disposed opposite each other. The side surface 13 is connected to the first surface 11 and the second surface 12, respectively. The side surface 13 is provided with a first groove 14. The first groove 14 may be arranged in a circle around the bracket 10, or multiple first grooves 14 may be provided. The multiple first grooves 14 are located in the same plane, which is perpendicular to the thickness direction H1 of the bracket 10. The multiple first grooves 14 are symmetrically distributed around the center of the bracket 10. The light-emitting element 20 is fixed to the first surface 11 of the bracket 10.

[0042] Please refer to Figure 4, which is a schematic diagram of the first structure of a lens provided in an embodiment of the present application. The lens 300 extends toward the bracket 10 to form a snap 32, which can engage with the first groove 14. In other words, the lens 300 includes a lens body 31 and a snap 32, which can be integrally formed. A cannonball hole 313 is provided on the lens 300. When the lens 300 is placed over the light-emitting element 20, the light-emitting element 20 is positioned within the cannonball hole 313. The edge of the lens 300 extends toward the bracket 10 in a direction H2 to form a snap 32. The snap 32 can engage with the first groove 14, allowing the lens 300 to be detachably connected to the bracket 10. The lens 300 can be made of an elastic material such as silicone or resin. The thickness direction H1 of the bracket 10 and the edge of the lens 300 in a direction H2 toward the bracket 10 are aligned.

[0043] Please refer to Figure 5, which is a schematic diagram of the installation process of the light-emitting device provided in an embodiment of the present application. When the lens 300 is installed on the bracket 10, the buckle 32 will be deformed when the lens 300 is pressed down. When the lens 300 continues to be pressed down, the buckle 32 of the lens 300 is engaged with the first groove 14 on the bracket 10, so that the lens 300 is fixed on the bracket 10, achieving simple and quick assembly. When the lens 300 is removed from the bracket 10, the buckle 32 of the lens 300 is deformed to be pulled out from the first groove 14 on the bracket 10, so that the lens 300 is separated from the bracket 10. The above technical means can achieve a detachable connection between the lens 300 and the light-emitting body 20. It can be seen that the installation process is opposite to the disassembly process.

[0044] The light-emitting device 100 provided in the embodiment of the present application can retain the installation scheme of the light-emitting body 20 plus the lens 300, and can also avoid the connection method of the light-emitting body 20 and the lens 300 being an adhesive connection or a threaded connection. The light-emitting body 20 is fixed to the bracket 10. The bracket 10 has a first groove 14, and the lens 300 includes a lens 300 and a buckle 32, and the buckle 32 is detachably connected to the first groove 14. When the buckle 32 is engaged with the first groove 14, the lens 300 can be covered on the light-emitting body 20 to refract the light emitted by the light-emitting body 20. When the buckle 32 is removed from the first groove 14, the lens 300 can be removed from the light-emitting body 20. Therefore, in the present application, the first groove 14 of the bracket 10 and the buckle 32 of the lens 300 can achieve simple alignment between the lens 300 and the light-emitting body 20, reduce the difficulty of assembly, and facilitate disassembly and maintenance.

[0045] In some embodiments, referring to Figures 2, 3, and 4, the buckle 32 includes a connecting portion 321 and a first boss 322. One end of the connecting portion 321 is connected to the lens 300, and the other end is connected to the first boss 322. The first boss 322 can be snapped into the first groove 14. Specifically, in the thickness direction H1 of the bracket 10, the distance between the first groove 14 and the first surface 11 is approximately the same as the length of the connecting portion 321, facilitating the snapping of the first boss 322 into the first groove 14. When the lens 300 is installed on or removed from the bracket 10, the connecting portion 321 and even the lens 300 deform to facilitate the first boss 322 to be positioned within the first groove 14 or to facilitate the first boss 322 to be released from the first groove 14.

[0046] Wherein, please refer to Figure 6, which is an enlarged schematic diagram of part A of Figure 4. The angle range of the chamfer between the connecting portion 321 and the first boss 322 is 20 degrees to 30 degrees. Specifically, the connecting line formed by the surface of the connecting portion 321 and the surface of the first boss 322 is set as the first connecting line, and the acute angle α (chamfer) formed between the tangent surface of the first boss 322 at the first connecting line and the surface of the connecting portion 321 is in the range of 20 degrees to 30 degrees, so as to ensure that the first boss 322 can be normally removed from the first groove 14. At the same time, the first boss 322 can also play a snap-fit ​​role to achieve a balance between assembly stability and sufficient strength.

[0047] In some embodiments, please refer to FIG. 7 , which is a schematic diagram of a second structure of a lens provided in an embodiment of the present application. FIG. 4 is a front view of the lens 300 , and FIG. 7 is a bottom view of the lens 300 . A plurality of clips 32 are provided to enhance the stability between the bracket 10 and the lens 300 . The clips 32 can be evenly distributed on the lens 300 . Correspondingly, the first groove 14 can be arranged around the bracket 10 , or a plurality of first grooves 14 can be provided, each of which corresponds one-to-one to a plurality of clips 32 , with each clip 32 being engaged within a first groove 14 .

[0048] Please continue to refer to Figure 7. There are four clips 32, and the four clips 32 are symmetrically arranged at the edge of the lens 300 along the center of the lens 300. Correspondingly, the bracket 10 has four first grooves 14, and the four first grooves 14 correspond one-to-one to the four clips 32. Two of the first grooves 14 are arranged opposite to each other along the first direction X, and the other two first grooves 14 are arranged opposite to each other along the second direction Y, and the first direction X is perpendicular to the second direction Y. The first direction X and the second direction Y are both parallel to the first surface 11, and the first direction X is perpendicular to the second direction Y. The first direction X can be the X direction in a Cartesian coordinate system, and the second direction Y can be the Y direction in a Cartesian coordinate system.

[0049] Since the lens 300 is fixed on the first surface 11 of the bracket 10, by providing four evenly distributed buckles 32, the relative position of the lens 300 on the bracket 10 can be ensured, thereby ensuring that the lens 300 does not shift during use, thereby improving reliability.

[0050] In some embodiments, the light emitting device 100 further includes an adhesive material layer, which is disposed between the bracket 10 and the lens 300 to achieve adhesion between the bracket 10 and the lens 300 so that the bracket 10 and the lens 300 do not shift during use, thereby enhancing reliability.

[0051] Continuing with Figures 3 and 4 , the lens 300 is provided with a second boss 311 on the side of the bracket 10 that is closest to the lens 300. A second groove 16 is provided on the side of the bracket 10 that is closest to the lens 300, i.e., the first surface 11. The height of the second boss 311 protruding from the surface of the lens 300 is less than or equal to the depth of the second groove 16. The second boss 311 can be snapped into the second groove 16. An adhesive layer is provided within the second groove 16 to allow the second boss 311 to adhere to the interior of the second groove 16. The second groove 16 is a dispensing groove for accommodating adhesive material to form an adhesive layer. The second boss 311 is used to adhere to the walls of the second groove 16. It will be appreciated that, because the lens 300 is relatively delicate, the bracket 10 is often placed on a flat surface and then mounted on the bracket 10 from top to bottom. In this case, the first surface 11 of the bracket 10 faces upward, and the second surface 12 faces downward. The second groove 16 is provided on the first surface 11. The adhesive material can be glue in a semi-solid or fluid state. By providing the second groove 16 on the first surface 11, the adhesive material can be stably disposed within the second groove 16, preventing the adhesive material from overflowing onto the light-emitting surface. The second boss 311 can be circular, rectangular, or a special shape.

[0052] The volume of the second boss 311 needs to be slightly smaller than the volume of the second groove 16 . The gap between the second boss 311 and the second groove 16 is used to accommodate the adhesive material, which forms a bonding material layer after solidification.

[0053] In order to facilitate the second boss 311 to disengage from the second groove 16, the area of ​​the end face of the second boss 311 close to the bracket 10 is smaller than the area where the second boss 311 is connected to the lens 300; the shape of the second groove 16 corresponds to the shape of the second boss 311, and the area of ​​the bottom surface of the second groove 16 is smaller than the area of ​​the notch of the second groove 16.

[0054] Please continue to refer to Figures 3 and 8, which is an enlarged schematic diagram of detail B of Figure 4. In the direction from the first surface 11 to the second surface 12, i.e., the installation direction H11 in which the lens 300 is directed toward the bracket 10, the acute angle β formed between the side surface 13 of the second boss 311 and the installation direction H11 ranges from 0.5 degrees to 3 degrees. It will be understood that the direction from the second surface 12 to the first surface 11 is the demolding direction H12. The installation direction H11 and the demolding direction H12 are oriented in opposite directions but lie on the same straight line. The demolding direction H12 is a third direction, which can be the Z direction in a Cartesian coordinate system. To facilitate the removal of the second boss 311 from the second groove 16 and enhance ease of installation or removal, the flat surface of the second boss 311 along the demolding direction H12 is modified into an inclined surface, resulting in a larger outer surface and a smaller inner surface. Therefore, the surface of the boss is inclined relative to the installation direction H11 or the demolding direction H12, with an inclination angle ranging from 0.5 degrees to 3 degrees.

[0055] In some embodiments, referring to FIG. 2 , the lens 300 and the bracket 10 enclose a receiving space 40 for accommodating the light-emitting element 20. It is worth noting that the aforementioned material storage groove or material storage groove can be the receiving space 40 or a portion of the receiving space 40. Light emitted by the light-emitting element 20 can be transmitted through the receiving space 40, with a portion reflected by the bracket 10 toward the lens 300 and another portion refracted at the interface between the lens 300 and the receiving space 40. This multiple refraction of light generated by the light-emitting element 20 helps improve the uniformity of light emitted by the light-emitting device 100.

[0056] When the lens 300 is mounted on the bracket 10, the accommodating space 40 is a closed space. The heat generated by the light-emitting body 20 is not easy to be discharged outside the light-emitting device 100, which can easily cause excessive heat to cause gas expansion, thereby causing structural deformation and affecting the light pattern. In order to avoid heat accumulation, the lens 300 and the bracket 10 are enclosed to form an exhaust hole, and the exhaust hole is connected to the accommodating space 40 to facilitate gas discharge. In addition, since the lens 300 is directly connected to the bracket 10 of the lamp bead 200, that is, the lens 300 is close to the light-emitting body 20, it is more prone to temperature rise, so an exhaust hole needs to be provided for heat dissipation.

[0057] In one embodiment, a venting groove 15 is provided on a side surface 13 of the bracket 10 near the lens 300. The lens 300 partially covers the venting groove 15 to form a venting hole. After the bracket 10 is connected to the lens 300, the notch of the venting groove 15 is sealed to form a venting hole. One end of the venting hole communicates with the receiving space 40, and the other end is formed on the surface of the bracket 10 to discharge gas within the receiving space 40 to the outside.

[0058] In another case, please continue to refer to Figure 7. An exhaust groove 15 is provided on a side surface 13 of the lens 300 close to the bracket 10. The bracket 10 covers part of the groove surface of the exhaust groove 15 to form the exhaust hole. The exhaust groove 15 provided on the lens 300 can be provided between adjacent buckles 32. It is understandable that after the bracket 10 is connected to the lens 300 of the lens 300, the notch of the exhaust groove 15 is closed to form the exhaust hole. One end of the exhaust hole is connected to the accommodating space 40, and the other end is formed on the surface of the lens 300 to discharge the gas in the accommodating space 40 to the outside of the light-emitting device 100, thereby avoiding the deformation of the lens 300 caused by the expansion of the gas in the accommodating space 40.

[0059] In the above case, the depth of the exhaust groove 15 can be 0.005mm to 0.02mm, for example 0.01mm. Since the exhaust groove 15 only needs to exhaust gas, the aperture can be set smaller to avoid affecting the appearance and the effect on light.

[0060] In some embodiments, the bracket 10 has a first surface 11, a second surface 12, and a side surface 13. The first surface 11 and the second surface 12 are disposed opposite each other, and the side surface 13 is connected to the first surface 11 and the second surface 12, respectively. A first groove 14 is disposed on the side surface 13. The first groove 14 may surround the bracket 10, or a plurality of first grooves 14 may be disposed. The plurality of first grooves 14 are located on the same plane, which is perpendicular to the thickness direction H1 of the bracket 10. The plurality of first grooves 14 are symmetrically distributed along the center of the bracket 10.

[0061] In some embodiments, the bracket 10 and lens 300 are bonded together by a layer of adhesive material to form a housing space 40 for accommodating the light-emitting element 20. An exhaust hole is also formed between the bracket 10 and lens 300, communicating with the housing space 40 for discharging gas within the housing space 40 to the exterior of the light-emitting device 100. Therefore, the lens 300 and bracket 10 in this application are easily assembled via the adhesive layer, reducing assembly difficulty and facilitating disassembly and maintenance. Furthermore, the bracket 10 and lens 300 can also be surrounded by an exhaust groove to exhaust gas within the housing space 40, thereby preventing deformation of the lens 300 caused by gas expansion.

[0062] In the light-emitting device 100 provided in the embodiment of the present application, the light-emitting device 100 includes a bracket 10, a light-emitting body 20, a lens 300, and an adhesive material layer. The bracket 10 and the lens 300 are bonded together by the adhesive material layer and enclose a receiving space 40 for accommodating the light-emitting body 20. An exhaust hole is also enclosed between the bracket 10 and the lens 300, and the exhaust hole is connected to the receiving space 40 for exhausting gas in the receiving space 40 to the outside of the light-emitting device 100. Therefore, the lens 300 and the bracket 10 in the present application are easily assembled through the adhesive material layer, reducing the difficulty of assembly and facilitating disassembly and maintenance. In addition, the bracket 10 and the lens 300 can also enclose an exhaust groove to exhaust gas in the receiving space 40, thereby preventing deformation of the lens 300 caused by gas expansion.

[0063] Please refer to Figure 9, which is a structural diagram of the backlight module provided in an embodiment of the present application. The present application also provides a backlight module 1, which includes a circuit board 2 and a plurality of light-emitting devices 100. The plurality of light-emitting devices 100 are the light-emitting devices 100 in the above-mentioned embodiment, and the plurality of light-emitting devices 100 are arranged in an array on the circuit board 2. Since the light-emitting device 100 adopts all the technical solutions of the above-mentioned embodiment, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiment, which will not be described one by one here. The backlight module 1 can be a direct-type backlight module 1 or an edge-type backlight module 1. The direct-type backlight module 1 has the advantages of high brightness, good display of regional light control details, and ultra-thinness. The direct-type backlight module 1 is to prepare the light-emitting devices 100 into a dense dot matrix, place them on the circuit board 2, and can directly illuminate the screen. The edge-type backlight module 1 is to set the light-emitting devices 100 on the circuit board 2, and can indirectly illuminate the screen through the light guide plate.

[0064] The present application also provides a display device comprising a housing, a liquid crystal module, and the backlight module 1 described in the above-mentioned embodiment. The display device can be a television, a monitor, an advertising machine, or other display device. The display device comprises a housing, a liquid crystal module disposed within the housing, and a backlight module 1. The light generated by the backlight module 1 is used to illuminate the liquid crystal module. The backlight module 1 is the backlight module 1 described in the above-mentioned embodiment. Because the backlight module 1 utilizes all the technical solutions of the above-mentioned embodiment, it at least has all the beneficial effects brought about by the technical solutions of the above-mentioned embodiment, and no further details will be given here.

[0065] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0066] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more features.

[0067] The above describes in detail the light-emitting device, backlight module, and display device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is intended only to facilitate understanding of the present application. Furthermore, those skilled in the art will appreciate that variations in the specific implementation methods and scope of application may occur based on the concepts of the present application. In summary, the contents of this specification should not be construed as limiting the present application.

Claims

1. A light emitting device, comprising: A lamp bead, the lamp bead comprises a bracket and a light-emitting body, and the light-emitting body is arranged on the bracket; A lens is covered on the light emitting body and connected to the bracket.

2. The light emitting device according to claim 1, wherein: The bracket is provided with a first groove; the lens extends in a direction close to the bracket to form a buckle, and the buckle can be engaged with the first groove.

3. The light emitting device according to claim 2, wherein: The buckle has a connecting portion and a first boss. The first boss is arranged at an end of the connecting portion away from the lens. The first boss can be snapped into the first groove.

4. The light emitting device according to claim 3, wherein: A connecting line formed by connecting the surface of the connecting portion and the surface of the first boss is set as a first connecting line, and an acute angle formed between a section of the first boss at the first connecting line and the surface of the connecting portion is in a range of 20 to 30 degrees.

5. The light emitting device according to claim 2, wherein: The first grooves are symmetrically distributed along the center of the bracket.

6. The light emitting device according to claim 2, wherein: The number of the buckles is four, and the four buckles are symmetrically arranged on the edge of the lens along the center of the lens.

7. The light emitting device according to claim 2, wherein: The bracket has a first surface, a second surface and a side surface. The first surface is opposite to the second surface. The side surface is connected to the first surface and the second surface respectively. The first groove is arranged on the side surface.

8. The light emitting device according to claim 1, wherein: It also includes a bonding material layer, which is arranged between the bracket and the lens.

9. The light emitting device according to claim 8, wherein: A second boss is arranged on one side of the lens close to the bracket, a second groove is arranged on one side of the bracket close to the lens, the second boss can be snapped into the second groove, and the adhesive material layer is arranged in the second groove.

10. The light emitting device according to claim 9, wherein: The height of the second boss is less than or equal to the depth of the second groove.

11. The light emitting device according to claim 9, wherein: The area of ​​the end surface of the second boss close to the bracket is smaller than the area where the second boss is connected to the lens; the shape of the second groove corresponds to the shape of the second boss, and the area of ​​the bottom surface of the second groove is smaller than the area of ​​the notch of the second groove.

12. The light emitting device according to claim 11, wherein: In the installation direction where the lens points to the bracket, the acute angle formed between the side surface of the second boss and the installation direction is in the range of 0.5 degrees to 3 degrees.

13. The light emitting device according to claim 1, wherein: The lens and the bracket are combined to form a receiving space for receiving the light-emitting body.

14. The light emitting device according to claim 13, wherein: The lens and the bracket are enclosed to form an exhaust hole, the exhaust hole is communicated with the accommodation space, and the exhaust hole is used to exhaust the gas in the accommodation space to the outside of the light emitting device.

15. The light emitting device according to claim 14, wherein: A side surface of the bracket close to the lens is provided with an exhaust groove, and the lens cover is provided with a partial groove surface of the exhaust groove to form the exhaust hole.

16. The light emitting device according to claim 14, wherein: A venting groove is disposed on a side of the lens close to the bracket, and the bracket covers a portion of the groove surface of the venting groove to form the venting hole.

17. The light emitting device according to claim 1, wherein: The lens and the bracket are combined to form a receiving space, and the receiving space is used to receive the light-emitting body; the light-emitting device further comprises a bonding material layer, and the bonding material layer is arranged between the bracket and the lens.

18. The light emitting device according to claim 1, wherein: The lens and the bracket are combined to form a storage space and an exhaust hole. The storage space is connected to the exhaust hole. The storage space is used to store the light-emitting body. The exhaust hole is used to discharge the gas in the storage space to the outside of the light-emitting device. The light-emitting device also includes an adhesive material layer, and the adhesive material layer is arranged between the bracket and the lens.

19. A backlight module, comprising: Circuit boards; A plurality of light emitting devices, wherein the plurality of light emitting devices are arranged on the circuit board, and the light emitting devices include: A lamp bead, the lamp bead comprises a bracket and a light-emitting body, and the light-emitting body is arranged on the bracket; A lens is covered on the light emitting body and connected to the bracket.

20. A display device, comprising a backlight module, wherein the backlight module comprises: Circuit boards; A plurality of light emitting devices, wherein the plurality of light emitting devices are arranged on the circuit board, and the light emitting devices include: A lamp bead, the lamp bead comprises a bracket and a light-emitting body, and the light-emitting body is arranged on the bracket; A lens is covered on the light emitting body and connected to the bracket.

Images