Lamp panel, backlight module and display device

Abstract

The embodiment of the utility model provides a lamp panel, a backlight module and a display device. The lamp panel comprises a substrate, a light-emitting device and a magnetic assembly, the light-emitting device and the magnetic assembly are both connected with the substrate, a mounting hole is formed in the substrate, and at least one part of the magnetic assembly is located in the mounting hole. According to the lamp panel provided by the embodiment of the invention, the mounting hole is formed in the substrate, and at least one part of the magnetic assembly is arranged in the mounting hole and is connected with the substrate, so that when the lamp panel is applied to the backlight module and is assembled with the back panel, the lamp panel can be adsorbed and fixed on the back panel through the magnetic assembly; the connection mode is simple, the production process time of the backlight module can be shortened, the production cost of the backlight module can be reduced, and the lamp panel and the back plate can be detached more conveniently.

Description

Technical Field

[0001] This application relates to the field of display, and in particular to a lamp panel, a backlight module, and a display device. Background Technology

[0002] Currently, backlights for LCD devices generally use LEDs (light-emitting diodes) as the light source, which are mounted on PCBs (Printed Circuit Boards) and assembled into light strips for use.

[0003] The backlight module is one of the important components of an LCD display. Since liquid crystals themselves do not emit light, the function of the backlight module is to provide sufficient brightness and a uniformly distributed light source so that the LCD display can display images normally. Currently, based on the distribution position of the light source, backlight modules can generally be divided into two types: edge-lit and direct-lit.

[0004] Direct-lit backlight modules refer to LED strips placed on top of a back panel. The strips are mainly attached to the back panel with adhesive or double-sided tape, or connected to the back panel with screws to fix them in place. However, these installation methods are cumbersome and involve complex procedures, resulting in higher production costs for backlight modules. Utility Model Content

[0005] Based on this, embodiments of this application provide a lamp panel, a backlight module, and a display device.

[0006] In a first aspect, embodiments of this application provide a lamp board, including a substrate, a light-emitting device, and a magnetic component. The light-emitting device and the magnetic component are both connected to the substrate. The substrate has mounting holes, and at least a portion of the magnetic component is located within the mounting holes.

[0007] The substrate has a front side and a back side disposed opposite to each other, the back side being a plane, and one end of the magnetic component near the back side being flush with the back side; and / or

[0008] The light-emitting device is disposed on the front side of the substrate; and / or,

[0009] The substrate is also provided with positioning holes.

[0010] In some embodiments, the magnetic component includes a magnetic element and a housing disposed around the magnetic element. The housing includes a first cylinder and a second cylinder connected together. The cross-sectional area of ​​the outer ring of the first cylinder is greater than the cross-sectional area of ​​the mounting hole, and the cross-sectional area of ​​the outer ring of the second cylinder is less than or equal to the cross-sectional area of ​​the mounting hole. At least a portion of the second cylinder is located in the mounting hole.

[0011] In some embodiments, the magnetic component includes a first magnet and a second magnet connected together, the first magnet being located inside the first cylinder and the second magnet being located inside the second cylinder, the cross-sectional area of ​​the first magnet being greater than the cross-sectional area of ​​the inner ring of the second cylinder, and the cross-sectional area of ​​the second magnet being less than or equal to the cross-sectional area of ​​the inner ring of the second cylinder.

[0012] In some embodiments, one end of the second cylinder near the back surface and one end of the second magnet near the back surface are both flush with the back surface; and / or,

[0013] The housing also includes a shielding member, which is disposed on the inner side of the first cylinder and connected to one end of the first cylinder opposite to the second cylinder. At the same time, the shielding member is disposed on the side of the first magnet opposite to the second magnet.

[0014] In some embodiments, the housing further includes a support frame, the first cylinder and the second cylinder are respectively disposed on both sides of the support frame, and both the first cylinder and the second cylinder are connected to the support frame, with at least a portion of the support frame located on the substrate.

[0015] In some embodiments, the magnetic component includes at least one connector, and both the housing and the substrate are connected to the connector to achieve a fixed connection between the magnetic component and the substrate.

[0016] In some embodiments, the connector is made of metal, a metal layer is provided on the substrate, and the connector is connected to the metal layer by welding; and / or,

[0017] The housing is made of plastic, and at least a portion of the connector enters the housing, with the connector and the housing forming an integral structure.

[0018] Secondly, embodiments of this application provide a backlight module, including a back panel and a lamp panel, wherein the lamp panel is as described above, and the lamp panel is attached to the back panel by magnetic adsorption.

[0019] Thirdly, embodiments of this application provide a display device including the backlight module as described above.

[0020] The lamp board provided in this application embodiment has mounting holes on the substrate, in which at least a portion of the magnetic component is disposed and connected to the substrate. When the lamp board is applied to the backlight module and assembled with the back plate, the lamp board can be magnetically attached and fixed to the back plate, thereby realizing the connection between the lamp board and the back plate. This connection method is relatively simple, which can shorten the production process time of the backlight module, reduce the production cost of the backlight module, and make the disassembly of the lamp board and the back plate more convenient. Attached Figure Description

[0021] 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.

[0022] Figure 1 This is a top view of the light panel provided in an embodiment of this application.

[0023] Figure 2 This is a top view of the magnetic component provided in an embodiment of this application.

[0024] Figure 3 This is a cross-sectional structural diagram of a portion of the lamp panel provided in an embodiment of this application.

[0025] Component symbol explanation:

[0026] 100. Lamp board; 20. Substrate; 21. Front side; 22. Back side; 23. Mounting hole; 24. Positioning hole; 30. Light-emitting device; 40. Magnetic component; 50. Magnetic part; 51. First magnet; 52. Second magnet; 60. Housing; 61. First cylinder; 62. Second cylinder; 63. Support frame; 64. Shielding part; 70. Connector; 80. Connector. Detailed Implementation

[0027] 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 them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] 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. Therefore, 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.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this specification, 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.

[0032] Please see Figure 1 , Figure 2 and Figure 3This application provides a lamp board 100, including a substrate 20, a light-emitting device 30, and a magnetic component 40. The light-emitting device 30 and the magnetic component 40 are both connected to the substrate 20. The substrate 20 is provided with mounting holes 23, and at least a portion of the magnetic component 40 is located in the mounting holes 23.

[0033] For example, the light-emitting device 30 is an LED lamp.

[0034] The lamp board 100 provided in this application embodiment has mounting holes 23 on the substrate 20. At least a portion of the magnetic component 40 is disposed in the mounting holes 23 and connected to the substrate 20. When the lamp board 100 is applied to the backlight module and assembled with the back plate, the lamp board 100 can be attracted and fixed to the back plate by the magnetic component 40, thereby realizing the connection between the lamp board 100 and the back plate. This connection method is relatively simple, which can shorten the production process time of the backlight module, reduce the production cost of the backlight module, and make the disassembly of the lamp board 100 and the back plate more convenient.

[0035] Please see Figure 3 The substrate 20 has a front side 21 and a back side 22 disposed opposite to each other. The back side 22 is a plane, and one end of the magnetic component 40 near the back side 22 is flush with the back side 22.

[0036] Understandably, by setting one end of the magnetic component 40 near the back surface 22 to be flush with the back surface 22 of the substrate 20, when the lamp board 100 is applied to the backlight module and assembled with the back plate, it not only makes it easier for the lamp board 100 and the back plate to be attracted and fixed, but also makes the lamp board 100 and the back plate fit more tightly. This allows the heat generated by the lamp board 100 during operation to be quickly conducted to the back plate, which can accelerate the heat dissipation of the lamp board 100 and extend the service life of the lamp board 100.

[0037] Please see Figure 1 The light-emitting device 30 is disposed on the front side 21 of the substrate 20.

[0038] Please see Figure 1 For example, a plurality of light-emitting devices 30 may be disposed on the substrate 20, and the plurality of light-emitting devices 30 are arranged sequentially according to the extension direction of the substrate 20.

[0039] Please see Figure 1 For example, a plurality of mounting holes 23 may be provided on the substrate 20, and the plurality of mounting holes 23 are arranged sequentially according to the extension direction of the substrate 20. Between any two adjacent mounting holes 23, a plurality of light-emitting devices 30 are arranged sequentially according to the extension direction of the substrate 20.

[0040] Please see Figure 1 The substrate 20 may also be provided with positioning holes 24.

[0041] It is understandable that by setting positioning holes 24 on the substrate 20, when the backlight module has positioning components, the lamp board 100 and the back plate can be pre-positioned by allowing the positioning components to enter the positioning holes 24, thereby improving the assembly accuracy of the lamp board 100 and the back plate.

[0042] Please see Figure 1 For example, a plurality of positioning holes 24 may be provided on the substrate 20, and the plurality of positioning holes 24 are arranged sequentially according to the extension direction of the substrate 20. Between any two adjacent positioning holes 24, a plurality of light-emitting devices 30 are arranged sequentially according to the extension direction of the substrate 20.

[0043] Please see Figure 1 For example, a connector 80 may also be provided on the substrate 20. The substrate 20 is provided with a line connecting the connector 80 and the light-emitting device 30. When the connector 80 is connected to an external circuit or power supply, it can supply power to the light-emitting device 30 to control the light-emitting device 30 to light up or turn off.

[0044] Please see Figure 2 and Figure 3 The magnetic component 40 includes a magnetic element 50 and a housing 60 disposed around the magnetic element 50. The housing 60 includes a first cylindrical body 61 and a second cylindrical body 62 connected together. The cross-sectional area of ​​the outer ring of the first cylindrical body 61 is larger than the cross-sectional area of ​​the mounting hole 23. The cross-sectional area of ​​the outer ring of the second cylindrical body 62 is less than or equal to the cross-sectional area of ​​the mounting hole 23. At least a portion of the second cylindrical body 62 is located in the mounting hole 23.

[0045] It is understandable that by setting the cross-sectional area of ​​the outer ring of the first cylinder 61 to be greater than the cross-sectional area of ​​the mounting hole 23, and the cross-sectional area of ​​the outer ring of the second cylinder 62 to be less than or equal to the cross-sectional area of ​​the mounting hole 23, the second cylinder 62 can be placed in the mounting hole 23, while the first cylinder 61 is located outside the mounting hole 23. At this time, the first cylinder 61 overlaps the substrate 20, which can prevent the first cylinder 61 from sliding down into the mounting hole 23, thereby preventing the housing 60 from slipping out of the mounting hole 23. This can improve the connection stability between the housing 60 and the substrate 20, and thus improve the connection stability between the magnetic component 40 and the substrate 20.

[0046] For example, the magnetic element 50 is a magnet, and the magnet is a neodymium iron boron magnet.

[0047] Please see Figure 3The magnetic component 50 includes a first magnet 51 and a second magnet 52 connected together. The first magnet 51 is located inside the first cylinder 61, and the second magnet 52 is located inside the second cylinder 62. The cross-sectional area of ​​the first magnet 51 is greater than the cross-sectional area of ​​the inner ring of the second cylinder 62, and the cross-sectional area of ​​the second magnet 52 is less than or equal to the cross-sectional area of ​​the inner ring of the second cylinder 62.

[0048] It is understandable that by setting the cross-sectional area of ​​the first magnet 51 to be larger than the cross-sectional area of ​​the inner ring of the second cylinder 62, the first magnet 51 can be prevented from sliding down into the second cylinder 62, thereby preventing the magnetic component 50 from slipping out of the housing 60. This can improve the structural stability of the magnetic component 40.

[0049] Please see Figure 3 The cross-sectional area of ​​the first magnet 51 can be equal to the cross-sectional area of ​​the inner ring of the first cylinder 61, and the outer surface of the first magnet 51 can be closely attached to the inner surface of the first cylinder 61; the cross-sectional area of ​​the second magnet 52 can be equal to the cross-sectional area of ​​the inner ring of the second cylinder 62, and the outer surface of the second magnet 52 can be closely attached to the inner surface of the second cylinder 62.

[0050] Please see Figure 3 The housing 60 also includes a shielding member 64, which is disposed on the inner side of the first cylindrical body 61 and connected to the end of the first cylindrical body 61 that is opposite to the second cylindrical body 62. At the same time, the shielding member 64 is disposed on the side of the first magnet 51 that is opposite to the second magnet 52.

[0051] It is understandable that by providing a shielding member 64 at the end of the housing 60, the shielding member 64 can block the magnetic member 50, so as to prevent the first magnet 51 from moving upward and causing the magnetic member 50 to detach from the housing 60, thereby improving the structural stability of the magnetic assembly 40.

[0052] Please see Figure 3 The shielding member 64 is annular and connected to the inner edge of the end of the first cylinder 61.

[0053] Please see Figure 3 The end of the second cylinder 62 near the back surface 22 and the end of the second magnet 52 near the back surface 22 are both flush with the back surface 22.

[0054] Understandably, by setting both the end of the second cylinder 62 near the back surface 22 and the end of the second magnet 52 near the back surface 22 to be flush with the back surface 22 of the back plate, when the lamp board 100 is applied to the backlight module and assembled with the back plate, it not only makes it easier for the lamp board 100 and the back plate to be attracted and fixed, but also makes the lamp board 100 and the back plate fit more tightly. This allows the heat generated by the lamp board 100 during operation to be quickly conducted to the back plate, which can accelerate the heat dissipation of the lamp board 100 and extend the service life of the lamp board 100.

[0055] Please see Figure 3 The housing 60 further includes a support frame 63, with the first cylindrical body 61 and the second cylindrical body 62 respectively disposed on both sides of the support frame 63, and both the first cylindrical body 61 and the second cylindrical body 62 are connected to the support frame 63. At least a portion of the support frame 63 is located on the substrate 20.

[0056] It is understandable that by providing a support frame 63 between the first cylinder 61 and the second cylinder 62, not only can the first cylinder 61 and the second cylinder 62 be connected using the support frame 63, but also, since at least a portion of the support frame 63 is located on the substrate 20, the magnetic component 40 can be attached to the substrate 20. At this time, a portion of the weight of the magnetic component 40 is distributed onto the substrate 20, and since the lower surface of the support frame 63 is in contact with the upper surface of the substrate 20, the connection stability between the magnetic component 40 and the substrate 20 can be improved.

[0057] For example, the lower surface of the support frame 63 and the upper surface of the substrate 20 are both planar and are in contact with each other.

[0058] Please see Figure 3 One end of the first cylindrical body 61 is connected to the outer edge of the support frame 63, and the other end of the first cylindrical body 61 is connected to the inner edge of the support frame 63.

[0059] Please see Figure 2 and Figure 3 The magnetic component 40 includes at least one connector 70, and both the housing 60 and the substrate 20 are connected to the connector 70 to achieve a fixed connection between the magnetic component 40 and the substrate 20.

[0060] Please see Figure 2 and Figure 3 For example, the connector 70 is strip-shaped.

[0061] Please see Figure 2 and Figure 3The housing 60 has multiple connectors 70 on its opposite sides, and the multiple connectors 70 on both sides are connected to the base plate 20.

[0062] For example, the connector 70 is made of metal, the substrate 20 has a metal layer, and the connector 70 is connected to the metal layer by welding.

[0063] In some embodiments, the metal layer is made of copper, and the connector 70 is made of copper.

[0064] For example, the housing 60 is made of plastic, at least a portion of the connector 70 enters the housing 60, and the connector 70 and the housing 60 are an integral structure.

[0065] In some embodiments, the housing 60 is made of PPA (poly(p-phenylene terephthalamide)).

[0066] For example, the connector 70 and the housing 60 are integrally formed by injection molding.

[0067] This application embodiment also provides a backlight module, including a back plate and a lamp plate 100, wherein the lamp plate 100 is the lamp plate 100 in any of the above embodiments, and the lamp plate 100 is adsorbed and fixed to the back plate by the magnetic component 40.

[0068] For example, the back plate is made of materials such as iron, cobalt, or nickel.

[0069] For example, the backlight module is a direct-lit backlight module.

[0070] This application also provides a display device, including the backlight module in any of the above embodiments.

[0071] For example, the display device further includes a liquid crystal display panel, and the backlight module is disposed on the light-incident side of the liquid crystal display panel.

[0072] For example, the display device can be a terminal such as a television, computer monitor, mobile phone, or tablet computer, or it can be a device with a display screen such as a gaming device, augmented reality (AR) device, virtual reality (VR) device, data storage device, audio playback device, video playback device, or wearable device. Wearable devices can be smart bracelets, smart glasses, smartwatches, smart decorations, etc.

[0073] The lamp board, backlight module, and display device provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application, and the descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A light panel, characterized in that, The device includes a substrate, a light-emitting device, and a magnetic component. The light-emitting device and the magnetic component are both connected to the substrate. The substrate has mounting holes, and at least a portion of the magnetic component is located within the mounting holes.

2. The lamp panel according to claim 1, characterized in that, The substrate has a front side and a back side disposed opposite to each other, the back side being a plane, and one end of the magnetic component near the back side being flush with the back side; and / or The light-emitting device is disposed on the front side of the substrate; and / or, The substrate is also provided with positioning holes.

3. The lamp panel according to claim 2, characterized in that, The magnetic component includes a magnetic element and a housing disposed around the magnetic element. The housing includes a first cylinder and a second cylinder connected together. The cross-sectional area of ​​the outer ring of the first cylinder is larger than the cross-sectional area of ​​the mounting hole, and the cross-sectional area of ​​the outer ring of the second cylinder is smaller than or equal to the cross-sectional area of ​​the mounting hole. At least a portion of the second cylinder is located in the mounting hole.

4. The lamp panel according to claim 3, characterized in that, The magnetic component includes a first magnet and a second magnet connected together. The first magnet is located inside the first cylinder, and the second magnet is located inside the second cylinder. The cross-sectional area of ​​the first magnet is greater than the cross-sectional area of ​​the inner ring of the second cylinder, and the cross-sectional area of ​​the second magnet is less than or equal to the cross-sectional area of ​​the inner ring of the second cylinder.

5. The lamp panel according to claim 4, characterized in that, The second cylinder end near the back surface and the second magnet end near the back surface are both flush with the back surface; and / or, The housing also includes a shielding member, which is disposed on the inner side of the first cylinder and connected to one end of the first cylinder opposite to the second cylinder. At the same time, the shielding member is disposed on the side of the first magnet opposite to the second magnet.

6. The lamp panel according to claim 3, characterized in that, The housing further includes a support frame, with the first cylinder and the second cylinder respectively disposed on both sides of the support frame, and both the first cylinder and the second cylinder being connected to the support frame, with at least a portion of the support frame located on the substrate.

7. The lamp panel according to claim 3, characterized in that, The magnetic component includes at least one connector, and both the housing and the substrate are connected to the connector to achieve a fixed connection between the magnetic component and the substrate.

8. The lamp panel according to claim 7, characterized in that, The connector is made of metal, and a metal layer is provided on the substrate. The connector is connected to the metal layer by welding; and / or, The housing is made of plastic, and at least a portion of the connector enters the housing, with the connector and the housing forming an integral structure.

9. A backlight module, characterized in that, It includes a back panel and a light panel, wherein the light panel is the light panel as described in any one of claims 1-8, and the light panel is fixed to the back panel by magnetic adsorption through the magnetic component.

10. A display device, characterized in that, Includes the backlight module as described in claim 9.

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