Lamp panel, backlight module and display device

Abstract

The invention discloses a lamp panel, a backlight module and a display device, and relates to the technical field of display. The lamp panel is used for being connected with a back plate of the backlight module, the lamp panel comprises a substrate and a plurality of light-emitting parts installed on the substrate at intervals, the substrate is provided with current limiting structures around the light-emitting parts, and the current limiting structures are used for limiting the flowing range of protective glue when the light-emitting parts are subjected to glue dispensing. According to the lamp panel provided by the invention, the flow range of the protection glue is limited by the current limiting structure during glue dispensing of the light-emitting parts, so that the problem of overflow of the protection glue is solved, and meanwhile, the distance between the protection glue on the two adjacent light-emitting parts after glue dispensing can be reduced, so that the attachment space of the supporting columns on the substrate is increased; in addition, the current limiting structure is limited within a certain range, so that the protective glue can completely wrap the light-emitting part, a better protective effect is provided, and the possibility that the protective glue is separated from the light-emitting part is reduced.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and particularly to a lamp board, a backlight module, and a display device. Background Art

[0002] The information provided in this section is only background information related to the present disclosure, and it is not necessarily prior art.

[0003] During the processing of the lamp board of a display device, it is necessary to perform a dispensing process on the light-emitting components. After the dispensing process, a protective glue is covered on the light-emitting components to fix and protect the light-emitting components, and to provide insulation and waterproof functions.

[0004] During the dispensing process, the situation of the protective glue overflowing often occurs, which reduces the distance between two adjacent light-emitting components after dispensing and affects the installation of the support posts on the lamp board. Summary of the Invention

[0005] The purpose of the present invention is to at least solve the problem of the protective glue overflowing during the dispensing process of the existing lamp board. This purpose is achieved through the following technical solutions:

[0006] In a first aspect, an embodiment of the present invention provides a lamp board, including a substrate and a plurality of light-emitting components spacedly installed on the substrate. The substrate is provided with a current-limiting structure around each of the light-emitting components, and the current-limiting structure is used to limit the flow range of the protective glue when dispensing the light-emitting components.

[0007] In some embodiments of the present invention, the current-limiting structure includes grooves and / or protrusions provided on the substrate.

[0008] In some embodiments of the present invention, the current-limiting structure is arranged around the light-emitting component and forms a closed structure.

[0009] In some embodiments of the present invention, the closed structure formed by the current-limiting structure is in a circular ring shape, a rectangular shape, or an oval shape.

[0010] In some embodiments of the present invention, the number of the current-limiting structures is multiple, and the multiple current-limiting structures are arranged at intervals along the circumferential direction around the light-emitting component.

[0011] In some embodiments of the present invention, along the circumferential direction around the light-emitting component, the current-limiting structure extends in an arc shape; or, along the direction parallel to the plate surface of the substrate, the cross-section of the current-limiting structure is circular, rectangular, or triangular.

[0012] In some embodiments of the present invention, the current-limiting structure has a gap from the light-emitting component.

[0013] In some embodiments of the present invention, the current-limiting structure includes a rough surface provided on the substrate.

[0014] In a second aspect, an embodiment of the present invention provides a backlight module, which includes a backplane and a light board as described in any one of the above technical solutions, and the light board is connected to the backplane.

[0015] In a third aspect, an embodiment of the present invention provides a display device, which includes the backlight module as described in the above technical solution.

[0016] The beneficial effects of the present invention are as follows:

[0017] A light board provided by an embodiment of the present invention is provided with a current limiting structure on the surface of the substrate of the light board. The current limiting structure is used to limit the flow range of the protective glue when the light-emitting component is dispensed, thereby improving the problem of overflow of the protective glue. At the same time, the distance between the protective glues on two light-emitting components after dispensing can be reduced, thereby increasing the attachable space of the support posts on the substrate. In addition, the current limiting structure is limited within a certain range, so that the protective glue can completely wrap the light-emitting component, providing a better protection effect and reducing the possibility of the protective glue detaching from the light-emitting component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0019] Figure 1 Schematically shows a schematic structural diagram (one) of a first light board according to an embodiment of the present invention;

[0020] Figure 2 Schematically shows a schematic structural diagram (two) of a first light board according to an embodiment of the present invention;

[0021] Figure 3 Schematically shows a schematic structural diagram of a second light board according to an embodiment of the present invention;

[0022] Figure 4 Schematically shows a schematic structural diagram of a third light board according to an embodiment of the present invention;

[0023] Figure 5 Schematically shows a schematic structural diagram of a fourth light board according to an embodiment of the present invention;

[0024] Figure 6 Schematically shows a schematic structural diagram of a fifth light board according to an embodiment of the present invention;

[0025] Figure 7Schematically shows a schematic diagram (I) of the structure of the sixth type of lamp board according to an embodiment of the present invention;

[0026] Figure 8 Schematically shows a schematic diagram (II) of the structure of the sixth type of lamp board according to an embodiment of the present invention;

[0027] Figure 9 Schematically shows a schematic diagram of the structure of the seventh type of lamp board according to an embodiment of the present invention;

[0028] Figure 10 Schematically shows a schematic diagram of the structure of the eighth type of lamp board according to an embodiment of the present invention;

[0029] Figure 11 Schematically shows a schematic diagram of the structure of the ninth type of lamp board according to an embodiment of the present invention;

[0030] Figure 12 Schematically shows a schematic diagram of the structure of the tenth type of lamp board according to an embodiment of the present invention.

[0031] The reference signs are as follows:

[0032] 100, lamp board; 10, substrate; 11, current-limiting structure; 111, groove; 112, rough surface; 113, protrusion; 114, notch; 20, light-emitting element; 30, protective glue. Detailed implementation manners

[0033] Hereinafter, the exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0034] It should be understood that the terms used herein are only for the purpose of describing specific exemplary embodiments and are not intended to be limiting. Unless otherwise clearly indicated in the context, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "include", "comprise", "contain", and "have" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is explicitly stated. It should also be understood that additional or alternative steps can be used.

[0035] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another region, layer, or section. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms do not imply an order or sequence when used in this document. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the exemplary embodiments.

[0036] For ease of description, spatial relative relationship terms may be used herein to describe the relationship of one element or feature shown in the figures to another element or feature, such as "inner," "outer," "inside," "outside," "below," "beneath," "above," "over," etc. Such spatial relative relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "beneath" another element or feature will then be oriented "above" or "over" the other element or feature. Thus, the exemplary term "below" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein are to be interpreted accordingly.

[0037] An LED liquid crystal display is a liquid crystal display that uses LEDs (light-emitting diodes) as a backlight source. It utilizes LEDs as the backlight source and combines liquid crystal technology to provide high-quality image display, while having low energy consumption and environmental protection features. Compared with traditional CCFL backlights, the advantages of LED liquid crystal displays include higher brightness, lower energy consumption, thinner design, and a wider color range, which makes LED display devices increasingly popular in the market and become one of the mainstream products.

[0038] The LED light board is an important part of the LED display device for providing backlight illumination. Its function is to make the entire liquid crystal screen emit light evenly so that viewers can see clear images. In the production and processing of the LED light board, taking the production and processing of a micro / mini LED light board as an example, during the production of the light board, a dispensing process for the light-emitting components is required. When dispensing, it is necessary to first fix the light-emitting components on the substrate through automated equipment, and then use a dispensing machine to dispense around the light-emitting components. The protective layer formed after dispensing can prevent the LED chips from being damaged by external mechanical forces or chemically eroded, extending the service life of the LEDs; at the same time, it can also reduce the refraction between the LEDs and the external medium, improve the light transmission efficiency, and alleviate the light attenuation problem.

[0039] However, in the related art, it is impossible to limit the dispensing range, resulting in the overflow of the protective glue. After the protective glue overflows, it not only cannot completely wrap the light-emitting components, leading to a decline in the protection function, but also causes a decrease in the connection area between the protective glue and the light-emitting components, making it easy for the protective glue to fall off; in addition, the overflowing protective glue will occupy the space between two adjacent light-emitting components, affecting the subsequent installation of support columns between the two adjacent light-emitting components.

[0040] In view of this, the embodiments of the present application provide a light board, aiming to limit the flow range of the protective glue during dispensing by setting a current-limiting structure on the substrate to solve the above problems.

[0041] The following will describe the light board provided in this embodiment in conjunction with the attached Figures 1-12 illustrations.

[0042] It should be noted that the "radial direction" described in the present application can be any radial direction in which the current-limiting structure 11 in the drawings forms a circle or a circular ring, and the "circumferential direction" can be the circumferential direction in which the current-limiting structure 11 in the drawings forms a circle or a circular ring. In addition, only a part of the substrate 10 structure and one of the light-emitting components 20 on the substrate 10 are shown in each drawing of the present application.

[0043] Figure 1 Schematically shows a schematic diagram (one) of the structure of the first light board according to an embodiment of the present invention, Figure 2 Schematically shows a schematic diagram (two) of the structure of the first light board according to an embodiment of the present invention.

[0044] Combined with the attached Figure 1 and the attached Figure 2 As shown in the figures, the embodiments of the present application propose a light board 100, which can be used to be installed on the backplane of the backlight module. The light board 100 can specifically be the aforementioned micro / mini LED light board 100, and of course, it can also be a light board 100 of other models, and this embodiment will not list them in detail.

[0045] The light board 100 includes a substrate 10 and a plurality of light-emitting components 20 spacedly mounted on the substrate 10. The light-emitting components 20 can be light-emitting diodes, and the plurality of light-emitting components 20 form a light-emitting array on the substrate 10. Among them, the substrate 10 of this embodiment can be a circuit board, such as a PCB board. The substrate 10 is mainly used to carry the light-emitting components 20 and provide circuit support for the light-emitting components 20. The light-emitting component 20 is also called an LED chip, which is mainly used as a light source for emitting light. In addition, the light board 100 can also include structures such as a radiator and a driving circuit (not shown in the figure), and both can be connected to the substrate 10.

[0046] In this embodiment, a current-limiting structure 11 is provided on the substrate 10. The current-limiting structure 11 is opened around the light-emitting component 20, that is, a corresponding current-limiting structure 11 is provided around each light-emitting component 20 on the substrate 10. The current-limiting structure 11 is used to limit the flow range of the protective glue 30 during dispensing so that the protective glue 30 can solidify within a predetermined range.

[0047] In this embodiment, by restricting the flow range of the protective glue 30 during dispensing, the problem of overflow of the protective glue 30 is improved. At the same time, the distance between the protective glues on two adjacent light-emitting components 20 after dispensing can be reduced, thereby increasing the attachable space of the support posts on the substrate 10. In addition, the current-limiting structure 11 is restricted within a certain range, so that the protective glue 30 can completely wrap the light-emitting component 20, providing a better protection effect and reducing the possibility of the protective glue 30 detaching from the light-emitting component 20 and the substrate 10.

[0048] In some examples, optionally, the current-limiting structure 11 of this embodiment can include a groove 111. The groove 111 has the characteristics of simple processing and good current-limiting effect. The depth range of the groove 111 can be 0.1 - 5 mm, and the width range of the groove 111 can be 0.5 - 10 mm. The structural form of the groove 111 can be a closed form or an intermittent form, and the shape of the groove 111 can also be various.

[0049] In some examples, optionally, the closed-form groove 111 is circular. Considering that the protective glue 30 is a flowable liquid before solidification, due to the action of the self-gravity, intermolecular force and surface tension of the protective glue 30, the protective glue 30 tends to be semicircular as shown in the figure after forming. Therefore, the shape of the groove 111 can be preferably a circular groove 111, and the circular groove 111 can better limit the maximum radial dimension of the protective glue 30 after solidification and forming.

[0050] Of course, the shape of the closed-form groove 111 of this embodiment is not limited to this. For example, the groove 111 can also be rectangular, oval, etc., and this embodiment will not list them one by one.

[0051] In some examples, optionally, the number of the closed - form grooves 111 in this embodiment can be multiple (this implementation is not shown in the figure). For example, when the groove 111 is circular - ring - shaped, the number of the grooves 111 is multiple and they are concentrically arranged. Along the direction away from the light - emitting element 20, the radial dimension of the circular - ring - shaped groove 111 gradually increases.

[0052] Figure 3 Schematically shows a schematic structural diagram of the second light - guide plate according to an embodiment of the present invention. Figure 4 Schematically shows a schematic structural diagram of the third light - guide plate according to an embodiment of the present invention.

[0053] Combined with the attached Figure 3 and the attached Figure 4 As shown, in some examples, optionally, the current - limiting structure 11 of this embodiment can also be a non - closed - form groove 111. At this time, the number of the current - limiting structures 11 of this embodiment can be regarded as multiple, and the multiple current - limiting structures 11 are arranged at intervals along the circumferential direction around the light - emitting element 20.

[0054] For example Figure 3 As shown, when the current - limiting structure 11 includes the groove 111, the groove 111 can be arc - shaped, and the multiple arc - shaped grooves 111 are arranged at intervals along the circumferential direction. Specifically, the multiple arc - shaped grooves 111 can be evenly arranged at intervals, forming an enclosure for the internal light - emitting element 20. Even if there is a gap between two adjacent arc - shaped grooves 111, under the action of the intermolecular force and surface tension of the protective glue 30, the bottom of the protective glue 30 can still be kept circular. Therefore, the multiple discontinuous - form current - limiting structures 11 can also play the role of preventing the protective glue 30 from overflowing.

[0055] Of course, the shapes of the multiple current - limiting structures 11 in this embodiment are not limited to arc - shaped, and can also be Figure 4 the circular shape in

[0056] Combined with the attached Figures 1-4 again as shown, in some examples, optionally, the current - limiting structure 11 of this embodiment can have a gap with the light - emitting element 20. For example, when the current - limiting structure 11 of this embodiment is as Figures 1-4 shown, and is only arranged in a circle around the light - emitting element 20, there is a radial gap between the current - limiting structure 11 and the light - emitting element 20. At this time, the current - limiting structure 11 defines the maximum contour size after the protective glue 30 solidifies and takes shape.

[0057] Figure 5 Schematically shows a schematic structural diagram of the fourth light - guide plate according to an embodiment of the present invention.

[0058] Combined with the attached Figure 5As shown, in some examples, optionally, in a direction away from the light-emitting element 20, the current-limiting structure 11 is provided with multiple rows or multiple (not shown in this embodiment) at intervals.

[0059] Taking Figure 5 the current-limiting structure 11 in [reference] as an example, which includes a plurality of grooves 111 arranged circumferentially, the current-limiting structure 11 can be provided with multiple rows of grooves 111 in the radial direction. Each row of grooves 111 is provided with a plurality of grooves 111 arranged at intervals circumferentially, and a certain stagger can be formed between adjacent two rows of grooves 111. For example, a notch 114 is formed between two adjacent grooves 111 in one row of grooves 111, and the notch 114 can be arranged opposite to one of the grooves 111 in another row of grooves 111 in the radial direction.

[0060] When the current-limiting structure 11 is provided with multiple rows at intervals, during dispensing, the flow rate of the protective glue 30 during dispensing can be reduced through the multiple current-limiting structures 11, so that the outer contour range of the protective glue 30 can be shown on the current-limiting structure 11 farthest from the light-emitting element 20, improving the current-limiting effect.

[0061] Figure 6 Schematically shows a schematic structural diagram of the fifth type of lamp board according to an embodiment of the present invention.

[0062] Combined with the attached Figure 6 As shown, in some examples, optionally, the current-limiting structure 11 of this embodiment includes a rough surface 112 provided on the substrate 10. The rough surface 112 can be a closed ring structure as shown in the figure, or an intermittent structure. The inner side of the rough surface 112 can be adjacent to the light-emitting element 20, or as shown in the figure, there is a certain interval between the inner side of the rough surface 112 and the light-emitting element 20.

[0063] Further, the rough surface 112 of this embodiment can be formed by means such as a grinding machine, sandblasting, or chemical treatment. The structural form of the rough surface 112 can be that the rough surface 112 has a plurality of concave points (not marked in the figure), and the concave points refer to small concave pits. For example, the concave points can be concave pits with a size of 0.01 - 1 mm. The structural form of the rough surface 112 can also be that it has a plurality of convex points (not marked in the figure), and the convex points refer to small convex bumps. For example, the height and width ranges of the convex points can both be in the range of 0.01 - 1 mm. Of course, the rough surface 112 can also be a form combining concave points and convex points, as long as it has a friction surface with a large friction force and can increase the friction force with the protective glue 30, it can be used as the rough surface 112 in this embodiment.

[0064] Figure 7 Schematically shows a schematic structural diagram (one) of the sixth type of lamp board according to an embodiment of the present invention, Figure 8Schematically shows a schematic diagram (II) of the structure of the sixth light board according to an embodiment of the present invention.

[0065] Combined with the attached Figure 7 and the attached Figure 8 As shown in the figure, in some examples, optionally, the current-limiting structure 11 of this embodiment includes a protrusion 113. The protrusion 113 also has the characteristics of simple processing and good current-limiting effect. The height range of the protrusion 113 can be 0.1 - 5 mm, and the width range of the protrusion 113 can be 0.5 - 10 mm. The structural form of the protrusion 113 can be a closed form or an intermittent form, and there can also be various shapes of the protrusion 113.

[0066] In some examples, optionally, the closed-form protrusion 113 is circular. Considering that the protective glue 30 is a flowable liquid before solidification, due to the action of the self-gravity, intermolecular force, and surface tension of the protective glue 30, the protective glue 30 tends to be in the hemispherical shape shown in the figure after molding. Therefore, the shape of the protrusion 113 can be preferably a circular protrusion 113, and the circular protrusion 113 can better limit the maximum radial dimension of the protective glue 30 after molding.

[0067] Of course, the shape of the closed-form protrusion 113 of this embodiment is not limited to this. For example, the protrusion 113 can also be other shapes such as rectangular, elliptical, polygonal, etc.

[0068] In some examples, optionally, the number of the closed-form protrusions 113 of this embodiment can be multiple (this implementation manner is not shown in the figure). For example, when the protrusion 113 is circular, the number of the circular protrusions 113 is multiple. The multiple circular protrusions 113 are concentrically arranged, and in the direction away from the light-emitting element 20, the radial dimensions of the multiple circular protrusions 113 gradually increase, and the protrusion 113 with the maximum radial dimension defines the maximum radial dimension of the protective glue 30.

[0069] Figure 9 Schematically shows a schematic diagram of the structure of the seventh light board according to an embodiment of the present invention, Figure 10 Schematically shows a schematic diagram of the structure of the eighth light board according to an embodiment of the present invention.

[0070] Combined with the attached Figure 9 and the attached Figure 10 As shown in the figure, in some examples, optionally, the current-limiting structure 11 of this embodiment can also be a non-closed-form protrusion 113. At this time, the number of the current-limiting structures 11 of this embodiment can be designed to be multiple, and the multiple protrusions 113 are arranged at intervals in the circumferential direction around the light-emitting element 20.

[0071] For example Figure 9As shown, when the current-limiting structure 11 includes the protrusion 113, the protrusion 113 can be arc-shaped, and more specifically, it can be circular arc-shaped. A plurality of arc-shaped protrusions 113 are arranged at intervals along the circumferential direction. Specifically, a plurality of arc-shaped protrusions 113 can be evenly arranged at intervals, forming an enclosure for the internal light-emitting component 20. Even if there is a gap between two adjacent arc-shaped protrusions 113, the bottom of the protective glue 30 can still be kept circular under the action of the intermolecular force and surface tension of the protective glue 30. Therefore, a plurality of discontinuous current-limiting structures 11 can also achieve a good effect of preventing the protective glue 30 from overflowing.

[0072] Of course, the shapes of the plurality of current-limiting structures 11 in this embodiment are not limited to arc-shaped, and can also be Figure 10 circular as shown in, or other shapes such as rectangular, triangular, polygonal, etc. This embodiment will not list them in detail.

[0073] Furthermore, the above-mentioned non-closed protrusion 113 can also be designed in multiple rows (this implementation manner is not shown in the figure). Taking the current-limiting structure 11 including a plurality of protrusions 113 arranged along the circumferential direction as an example, the current-limiting structure 11 can be provided with multiple rows of protrusions 113 along the radial direction. Each row of protrusions 113 is provided with a plurality of protrusions 113 arranged at intervals along the circumferential direction, and a certain stagger can be formed between two adjacent rows of protrusions 113. For example, a notch 114 is formed between two adjacent protrusions 113 in one row of protrusions 113, and the notch 114 can be arranged opposite to one of the protrusions 113 in another row of protrusions 113 in the radial direction.

[0074] Combined with the attached Figures 7-10 As shown, in some examples, optionally, the protrusion 113 of this embodiment can be spaced from the light-emitting component 20. For example, when the current-limiting structure 11 of this embodiment is as Figures 7-10 shown, and is only arranged in a circle around the light-emitting component 20, there is a radial gap between the current-limiting structure 11 and the light-emitting component 20. At this time, the current-limiting structure 11 defines the maximum contour size of the protective glue 30.

[0075] Figure 11 Schematically shows a schematic structural diagram of the ninth type of lamp board according to an embodiment of the present invention. Figure 12 Schematically shows a schematic structural diagram of the tenth type of lamp board according to an embodiment of the present invention.

[0076] Combined with the attached Figure 11 and the attached Figure 12 As shown, in addition to the above forms, the current-limiting structure 11 of this embodiment can also include at least two of the groove 111, the rough surface 112, and the protrusion 113 in this embodiment. For example Figure 11As shown in , the groove 111 can be combined with the rough surface 112, and the rough surface 112 is provided inside the groove 111 on the outer ring. For another example, the protrusion 113 can be combined with the rough surface 112, and the rough surface 112 is provided inside the protrusion 113 on the outer ring (this implementation is not shown in the figure). For another example Figure 12 As shown in , the groove 111 is combined with the protrusion 113, and the groove 111 and the protrusion 113 are integrally designed as a circle and arranged alternately along a circumferential direction. For another example, multiple circles of grooves 111 and multiple circles of protrusions 113 are concentrically arranged and arranged alternately (this implementation is not shown in the figure).

[0077] Based on the above lamp board 100, the embodiment of the present application provides a backlight module in the second aspect, which includes a back plate (not shown in the figure) and the lamp board 100 as described in the above technical solution, and the lamp board 100 is installed on the back plate.

[0078] Among them, the backlight module of this embodiment is a device for providing backlight illumination for a liquid crystal display. The back plate of this embodiment is a support plate or base connected to the back of the lamp board 100, which is used to fix the lamp board 100 and provide support. For the rest of the backlight assembly, reference can be made to the related art, and this embodiment will not be described in detail.

[0079] The embodiment of the present application provides a display device (not shown in the figure) in the third aspect, which includes the above backlight module.

[0080] The display device is a flat panel display device that uses liquid crystal technology to display images, specifically an LED liquid crystal display. In the display device, the backlight module is used to provide light. The display device may also include a driving circuit (not shown in the figure) connected to the backlight module. For the rest of the display device, reference can be made to the related art, and this embodiment will not be described in detail.

[0081] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A light board, comprising a substrate and a plurality of light-emitting components spacedly mounted on the substrate, characterized in that: The substrate is provided with a current-limiting structure around each of the light-emitting components, and the current-limiting structure is used to limit the flow range of the protective glue when the light-emitting components are dispensed with glue.

2. The light board according to claim 1, characterized in that, The current-limiting structure includes a groove and / or a protrusion provided on the substrate.

3. The light board according to claim 2, characterized in that, The current-limiting structure is arranged around the light-emitting component and forms a closed structure.

4. The light board according to claim 3, characterized in that, The closed structure formed by the current-limiting structure is in a circular ring shape, a rectangular shape or an oval shape.

5. The light board according to claim 2, characterized in that, The number of the current-limiting structures is multiple, and the multiple current-limiting structures are arranged at intervals in the circumferential direction around the light-emitting component.

6. The light board according to claim 5, characterized in that, The current-limiting structure is in an arc shape, a circular shape, a rectangular shape or a triangular shape.

7. The light board according to any one of claims 2-6, characterized in that, In the circumferential direction around the light-emitting component, the current-limiting structure extends in an arc shape; or, in a direction parallel to the board surface of the substrate, the cross-section of the current-limiting structure is a circular shape, a rectangular shape or a triangular shape.

8. The light board according to claim 1, wherein, The current-limiting structure includes a rough surface provided on the substrate.

9. A backlight module, characterized in that, It includes a backplane and a lamp board as described in any one of claims 1-8, and the lamp board is connected to the backplane.

10. A display device, characterized in that, It includes a backlight module as described in claim 9.

Images