Printed circuit board, assembly, light bar, backlight source, backlight module and display equipment

Abstract

The embodiment of the utility model provides a printed circuit board, an assembly, a light bar, a backlight source, a backlight module and display equipment, and relates to the technical field of display equipment, the printed circuit board comprises a board body, the board body is used for installing LED lamp beads, the board body is provided with a plurality of comb tooth parts and connecting parts, and the comb tooth parts are connected with the connecting parts. Each comb tooth part is provided with a first end and a second end which are oppositely arranged in the length direction of the comb tooth part, the connecting part is connected with the first ends of the plurality of comb tooth parts, and the plurality of comb tooth parts are arranged at intervals in the width direction of the comb tooth parts. The plurality of comb tooth parts are arranged at intervals in the width direction of the comb tooth parts, so that compared with a scheme that a printed circuit board is arranged on a whole board, the use amount of the printed circuit board can be greatly reduced, the production and manufacturing cost of the backlight module can be reduced, the area of the printed circuit board is small, and the phenomenon of warping caused by stress concentration can be avoided.

Description

Technical Field

[0001] This application relates to the field of display device technology, specifically to a printed circuit board, component, light strip, backlight source, backlight module, and display device. Background Technology

[0002] Currently, the backlight boards in display devices are generally set as a single board. This setup results in a large amount of PCB board usage and low utilization. Furthermore, the large area of ​​the single-board PCB board leads to high cost of the backlight module and makes it prone to warping. Utility Model Content

[0003] This application provides a printed circuit board, component, light strip, backlight, backlight module, and display device, aiming to improve the utilization rate of the printed circuit board.

[0004] On one hand, embodiments of this application provide a printed circuit board, including:

[0005] The plate body is used for mounting LED beads. The plate body has multiple comb teeth and connecting parts. Each comb tooth has a first end and a second end that are arranged opposite to each other in its length direction. The connecting parts connect the first ends of the multiple comb teeth, and the multiple comb teeth are spaced apart in its width direction.

[0006] In some embodiments, the number of comb teeth on the plate is less than or equal to 5; and / or,

[0007] The plate has two comb teeth.

[0008] In some embodiments, the comb teeth have a first portion, a second portion, and a third portion arranged sequentially along its length.

[0009] The width of the second portion is greater than that of the first portion and / or the third portion.

[0010] In some embodiments, the width of the second portion is greater than the dimension a of the first portion and / or the third portion, wherein 0 mm < a ≤ 2 mm.

[0011] In some embodiments, the first portion and / or the third portion are provided with bridge connecting portions on both sides along the width direction, and the bridge connecting portions and the second portion are spaced apart in the length direction of the comb portion.

[0012] In some embodiments, the connecting portion is provided with a mounting portion on the side away from the comb teeth along the length direction of the comb teeth, and the mounting portion is used for mounting the connector.

[0013] In some embodiments, the mounting portion includes a mounting groove that extends through the connecting portion along the thickness direction of the plate.

[0014] In some embodiments, the open end of the mounting groove extends to the side of the connecting portion away from the comb teeth; and / or,

[0015] The connecting part is also provided with an observation window that communicates with the mounting slot; and / or,

[0016] The connecting part is provided with a boosting hole, and the boosting hole is spaced apart from the mounting groove.

[0017] In some embodiments, the printed circuit board further includes a connecting piece that connects to a plurality of the comb teeth and is spaced apart from the connecting portion.

[0018] On the other hand, embodiments of this application provide a printed circuit board assembly, characterized in that it includes:

[0019] At least two printed circuit boards, which are as described above, wherein the at least two printed circuit boards are interlocked with each other via their comb-like portions.

[0020] In some embodiments, the comb teeth have a first portion, a second portion, and a third portion arranged sequentially along its length.

[0021] Along the width direction of the comb teeth, the second portions of two adjacent comb teeth are spaced apart, and the distance between two adjacent second portions is b, where 0 < b ≤ 2 mm; and / or,

[0022] The first and / or third portions of two adjacent comb teeth are connected by a bridge connection.

[0023] In some embodiments, the printed circuit board assembly has a first end and a second end disposed opposite to each other in the length direction of the comb portion, and at least two printed circuit boards include a first printed circuit board and a second printed circuit board, wherein the connection portion of the first printed circuit board is located at the first end of the printed circuit board assembly, and the connection portion of the second printed circuit board is located at the second end of the printed circuit board assembly.

[0024] The second printed circuit board has two adjacent comb teeth sandwiched on either side of one of the comb teeth of the first printed circuit board in the width direction; or,

[0025] The at least two printed circuit boards include at least two first printed circuit boards and a second printed circuit board, the two first printed circuit boards are arranged adjacent to each other, and the two adjacent comb teeth of the second printed circuit board are sandwiched between the two adjacent comb teeth of the two first printed circuit boards.

[0026] On the other hand, embodiments of this application provide a light strip, including:

[0027] Printed circuit boards, such as any of the printed circuit boards described above; and,

[0028] LED beads are packaged on the printed circuit board.

[0029] In some embodiments, the LED beads are mounted on the comb portion of the printed circuit board at a position other than the centerline in its width direction.

[0030] In some embodiments, a mounting groove is provided on the connection portion of the printed circuit board, the printed circuit board has a first side and a second side disposed opposite to each other in its thickness direction, and the LED beads are encapsulated on the first side of the printed circuit board;

[0031] The light strip also includes a connector that is mounted in the mounting slot and at least partially protrudes from the second side of the printed circuit board.

[0032] On the other hand, embodiments of this application provide a backlight source, including:

[0033] An adapter plate, wherein a plurality of mounting positions are provided at intervals along its length;

[0034] Multiple light strips, as described above, are installed at the mounting position and spaced apart along the length of the adapter plate.

[0035] In some embodiments, the printed circuit board of the light strip has a first side and a second side disposed opposite to each other in its thickness direction;

[0036] The second side of the printed circuit board is attached to the adapter board.

[0037] On the other hand, embodiments of this application provide a backlight module, including a backlight source as described above.

[0038] On the other hand, embodiments of this application provide a display device including a backlight module as described above.

[0039] This application embodiment provides multiple comb-like sections on the printed circuit board, with these comb-like sections spaced apart in their width direction. This significantly reduces the amount of printed circuit board used compared to a solution where the entire board is first assembled. This lowers the manufacturing cost of the backlight module. Furthermore, the smaller area of ​​the printed circuit board avoids stress concentration that could lead to warping. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a top view of a printed circuit board provided in some embodiments of this application;

[0042] Figure 2 This is a top view of the first embodiment of the light strip provided in this application;

[0043] Figure 3 This is a top view of the second embodiment of the light strip provided in this application;

[0044] Figure 4 This is a top view of the third embodiment of the light strip provided in this application;

[0045] Figure 5 This is a cross-sectional view of the first embodiment of the printed circuit board assembly provided in this application;

[0046] Figure 6 This is a cross-sectional view of the second embodiment of the printed circuit board assembly provided in this application;

[0047] Figure 7 This is a cross-sectional view of the third embodiment of the printed circuit board assembly provided in this application;

[0048] Figure 8 This is a cross-sectional view of the first embodiment of the backlight provided in this application;

[0049] Figure 9 This is a cross-sectional view of the second embodiment of the backlight provided in this application;

[0050] Figure 10 This is a top view of the fourth embodiment of the light strip provided in this application;

[0051] Figure 11 yes Figure 10 Side view of the light strip in the middle;

[0052] Figure 12This is a top view of the fourth embodiment of the printed circuit board assembly provided in this application.

[0053] Explanation of key component symbols:

[0054]

[0055] Detailed Implementation

[0056] 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 some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0057] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0059] The use of "applies to" or "configured to" in this application implies open and inclusive language, which does not exclude the applicability to or configuration to devices performing additional tasks or steps. Additionally, the use of "based on" implies openness and inclusivity, because processes, steps, calculations, or other actions "based on" one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0060] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0061] Currently, LED strips on display devices are generally installed on a single board. This arrangement results in a large amount of PCB board usage and low utilization. Furthermore, the large area of ​​the single-board PCB board leads to high cost of the backlight module and makes it prone to warping.

[0062] For this, please refer to Figures 1 to 4 ,as well as Figure 8 This application provides a printed circuit board 10, including a board body for mounting LED beads 30. The board body has a plurality of comb teeth 11 and a connecting portion 12. The comb teeth 11 have a first end and a second end that are arranged opposite to each other in the length direction. The connecting portion 12 connects the first ends of the plurality of comb teeth 11, and the plurality of comb teeth 11 are spaced apart in the width direction.

[0063] This embodiment of the application provides a plurality of comb teeth 11 on the board body of the printed circuit board 10, and the plurality of comb teeth 11 are spaced apart in the width direction. Compared with the scheme of first setting the printed circuit board 10 on the whole board, it can greatly reduce the amount of printed circuit board 10 used, reduce the production and manufacturing cost of the backlight module, and the small area of ​​the printed circuit board 10 can avoid the phenomenon of warping caused by stress concentration.

[0064] It should be noted that during the production and processing, a whole printed circuit board 10 can be cut to obtain individual printed circuit boards 10. In subsequent processes, LED lights can be encapsulated on the printed circuit board 10 to obtain a backlight 100, which can then be applied to the backlight module. The multiple comb teeth 11 are spaced apart in their width direction, and the gaps between the multiple comb teeth 11 can be cut to form comb teeth 11 of other printed circuit boards 10. Therefore, a whole printed circuit board that could originally only be used on one backlight module can be transformed into a printed circuit board on two or even more backlight modules using the comb teeth 11 solution in this application. In addition, the printed circuit boards cut from the gaps between the multiple comb teeth 11 can also be remelted to form a brand new printed circuit board, thereby greatly improving the utilization rate of the printed circuit board 10, reducing the amount of printed circuit boards used in a single backlight module, and reducing the production and manufacturing cost of the backlight module.

[0065] It is understood that the number of multiple comb teeth 11 is not limited, and can be two, three, four, etc., without limitation. It is understood that compared with the single comb tooth 11 solution, since LEDs need to be driven by driver chips, and the number of LEDs divided by the number of channels of driver chips is often not divisible, combining them can reduce the waste of channels by driver chips. When the number of comb teeth 11 is greater, the number of driver chips can be reduced.

[0066] However, the more comb teeth 11 there are, the larger the overall size of the printed circuit board 10 will be. It is understood that during the production process, a complete printed circuit board is cut into several printed circuit boards 10. Therefore, the smaller the size of the resulting printed circuit board 10, the higher the utilization rate of the complete printed circuit board.

[0067] Therefore, in one embodiment, the number of comb teeth 11 on the board body is less than or equal to 5, so that the overall size of the printed circuit board 10 can be made smaller, thereby improving the utilization rate of the printed circuit board 10.

[0068] Preferably, the number of comb teeth 11 on the board is two. With this arrangement, among multiple comb teeth 11, the overall size of the printed circuit board 10 is the smallest and the utilization rate is the highest.

[0069] Please refer to the following: Figure 8If the connecting part 12 connecting two comb teeth 11 is called a connecting segment, when there are six comb teeth 11, only two comb teeth 11 are provided on one board, only 3 connecting segments are needed, but when there are three comb teeth 11 on one board, 4 connecting segments are needed, and when there are six comb teeth 11 on one board, 5 connecting segments are needed. Therefore, by setting the number of comb teeth 11 on the board to 2, the number of connecting segments can be omitted, thereby reducing the amount of printed circuit board 10 used on the backlight 100.

[0070] For further details, please refer to the following: Figures 5 to 7 For the printed circuit board 10 with comb teeth 11, in the actual production process, a complete printed circuit board is cut to obtain... Figures 5 to 7 The printed circuit board assembly shown is such that, at this time, multiple printed circuit boards 10 in the printed circuit board assembly are connected by a bridge connection 13, thereby preventing the multiple printed circuit boards 10 from being scattered and facilitating transportation and storage. After the user obtains the printed circuit board assembly, the bridge connection 13 is cut to divide the printed circuit board assembly into several individual printed circuit boards 10.

[0071] Due to the presence of the bridge connection 13, there is generally a gap of about 2mm between two adjacent comb teeth 11 on different printed circuit boards 10. Correspondingly, the width of the comb teeth 11 can be consistent as a whole, that is, when the comb teeth 11 includes multiple parts, the width of each part is the same, or the width of each part is different. This is not limited here. When the width of each part is the same, a gap of about 2mm will be cut in the part where the bridge connection 13 is not needed, resulting in the waste of printed circuit boards 10.

[0072] Therefore, in one embodiment, the comb portion 11 has a first portion 111, a second portion 112 and a third portion 113 arranged sequentially in its length direction; wherein the width of the second portion 112 is greater than that of the first portion 111 and / or the third portion 113.

[0073] In this embodiment, the width of the second portion 112 is greater than that of the first portion 111 and / or the third portion 113. This allows the second portion 112 to be processed using a V-cut process during production, resulting in a smaller gap, a smaller area of ​​the cut printed circuit board, and higher utilization of the printed circuit board 10. Meanwhile, the first portion 111 and / or the third portion 113 can continue to be processed using a conventional laser cutting process to form the bridge connection portion 13.

[0074] Specifically, a bridge connection portion 13 is provided on the first portion 111. When the third portion 113 is not provided, the widths of the second portion 112 and the third portion 113 can be set to be the same, both being greater than the width of the first portion 111. Similarly, when a bridge connection portion 13 is provided on the third portion 113, the widths of the second portion 112 and the first portion 111 can be set to be the same, both being greater than the width of the second portion 112.

[0075] When both the first portion 111 and the third portion 113 are provided with bridge connection portions 13, the connection strength between the multiple printed circuit boards 10 of the corresponding printed circuit board assembly is greater and the connection stability is better. Correspondingly, at this time, the width of the second portion 112 is greater than the width of the first portion 111 and the third portion 113.

[0076] It is understandable that by making the second portion 112 wider, the printed circuit board 10 can accommodate the installation of LED light sources with a wider spacing. Furthermore, the extra width, which would otherwise be cut off during the manufacturing process, can improve the utilization rate of the printed circuit board 10.

[0077] For example, taking the case where the gap between the bridge connection portions 13 of multiple printed circuit boards 10 in the printed circuit board assembly is 2mm, the width of the first portion 111 and / or the third portion 113 is 12mm. By using a V-cut cutting process to form the second portion 112, the width of the second portion 112 can be increased from the original 12mm to more than 13.5mm, which greatly improves the utilization rate of the printed circuit board 10.

[0078] Specifically, in practical use, the second portion 112 can be processed using a V-cut cutting process on one side of its width direction, or it can be processed using a V-cut cutting process on both sides. When processed on one side, one side of the second portion 112 protrudes from the first portion 111 and / or the third portion 113. When used on both sides, both sides of the second portion 112 protrude from the first portion 111 and / or the third portion 113. Correspondingly, in this case, the width of the second portion 112 is the largest, and the utilization rate of the printed circuit board 10 is the highest.

[0079] Therefore, by changing the processing technology of the second portion 112, its width can be increased. Of course, the width of the second portion 112 cannot be too much greater than the size of the first portion 111 and / or the third portion 113, otherwise, the length of the corresponding bridge connection portion 13 will be too large, and the waste of the printed circuit board 10 will also increase. Therefore, the width of the second portion 112 is greater than the size a of the first portion 111 and / or the third portion 113, where 0mm < a < 2mm. This setting can improve the utilization rate of the printed circuit board 10.

[0080] Please see Figure 3 In the figure, W is the width of the second part 112, and V is the width of the first part 111, where a = WV.

[0081] Since the width of the second portion 112 is greater than that of the first portion 111 and / or the third portion 113, the second portion 112 protrudes from the first portion 111 and / or the third portion 113 in its width direction. During the cutting of the bridge connection, it is possible to cut the second portion 112. Therefore, in one embodiment, the first portion 111 and / or the third portion 113 are provided with bridge connection portions 13 on both sides along the width direction. The bridge connection portions 13 and the second portion 112 are spaced apart in the length direction of the comb portion 11. With this arrangement, there is a gap between the bridge connection portions 13 and the second portion 112, which can effectively prevent the second portion 112 from being cut during the cutting of the bridge connection portions 13.

[0082] Meanwhile, the printed circuit board 10 not only needs to accommodate LEDs but also needs to accommodate connectors 20, so that it can be connected to the power supply / driver to achieve the purpose of lighting the LED strip. Therefore, in one embodiment, the connecting part 12 is provided with a mounting part on the side away from the comb tooth part 11 along the length direction of the comb tooth part 11. The mounting part is used to accommodate the connector 20. This arrangement allows the connector 20 to be installed in the mounting part, so that it can be connected to the power supply / driver to achieve the purpose of lighting the LED strip.

[0083] It should be noted that the specific implementation form of the mounting part is not limited. It can be in the form of a mounting groove 14, or in the form of a mounting protrusion, etc. There is no limitation here. The specific implementation form of the connector 20 is not limited. It can be a recessed connector 20 or a plate-type connector 20. There is no limitation here.

[0084] The recessed design of the recessed connector 20 makes the connector 20 more compact, reducing the space occupied inside the device. It can improve the firmness of insertion and removal. Through the recessed design, the connection strength between the connector 20 and the PCB board is increased, improving the firmness of insertion and removal. The recessed design helps to improve the overall stability of the product and reduce failures caused by loose interfaces.

[0085] Therefore, in one embodiment, the mounting part includes a mounting groove 14, which is disposed through the connecting part 12 along the thickness direction of the plate, so that the connector 20 can be installed in the mounting groove 14 and the mounting groove 14 can engage and limit the connector 20.

[0086] Furthermore, the open end of the mounting groove 14 extends to the side of the connecting portion 12 away from the comb portion 11.

[0087] Specifically, the mounting slot 14 includes a first slot segment 141 and a second slot segment 142 arranged sequentially from its opening inwards. The second slot segment 142 is used for mounting the connector 20, and the first slot segment 141 is used for inserting a plug on the adapter plate 40, so that the plug can pass through the first slot segment 141 and be inserted between the connector 20 in the second slot segment 142.

[0088] In this embodiment, by providing the mounting slot 14, which includes a first slot segment 141 and a second slot segment 142 arranged sequentially from its opening inwards, a recessed connector 20 can be installed into the first slot segment 141. The plug on the adapter board 40 is then inserted between the connector 20, which passes through the first slot segment 141 and the second slot segment 142, thus achieving connection between the light strip and the adapter board 40. Furthermore, the design of the mounting slot 14 allows for a smaller area of ​​the printed circuit board 10, resulting in a smaller number of printed circuit boards used and reducing the cost of the backlight module.

[0089] In addition, please see Figures 9 to 12In one embodiment, the connection portion 12 of the printed circuit board 10 is provided with a mounting groove 14. The printed circuit board 10 has a first side 17 and a second side 18 disposed opposite to each other in its thickness direction. The LED beads 30 are encapsulated on the first side 17 of the printed circuit board 10. The connector 20 is installed in the mounting groove 14 and at least partially protrudes from the second side 18 of the printed circuit board. In the technical solution of this embodiment, the connector 20 is located on the second side 18 of the printed circuit board. Therefore, the connection with the adapter plate 40 is also made on the second side 18 of the light strip. After installation, the adapter plate 40 will also be located on the second side 18 of the light strip. At this time, the adapter plate is less likely to block the LED beads, and it is convenient to connect the wires and improve the picture quality of the display device.

[0090] Correspondingly, the connecting part 12 is also provided with an observation window 19 that communicates with the mounting groove 14, so that the position of the connector 20 can be seen during assembly by opening the observation window 19, thus avoiding blind insertion.

[0091] Furthermore, in some embodiments, the connecting portion 12 is provided with a boosting hole 50, which is spaced apart from the mounting groove 14. Since the light strip is thin, it is not easy to apply force during the docking process with the adapter plate 40. Therefore, by providing the boosting hole 50, during the docking process, the installer can insert a tool into the boosting hole 50 to apply force to the boosting hole 50 and complete the docking between the printed circuit board 10 and the adapter plate 40.

[0092] Furthermore, in some embodiments, the printed circuit board further includes a connecting piece 60, which connects multiple comb teeth 11 and is spaced apart from the connecting part 12. In the technical solution of this embodiment, by setting the connecting piece 60, multiple comb teeth 11 of the printed circuit board 10 can be connected into a whole, the comb teeth 11 can be reinforced, and the shaking amplitude of the comb teeth 11 during the movement process can be reduced.

[0093] For further details, please refer to Figures 5 to 7 The present invention also proposes a printed circuit board assembly, which includes at least two printed circuit boards 10, wherein the at least two printed circuit boards 10 are interconnected by their comb teeth 11. The specific structure of the printed circuit board 10 is as described in the above embodiments. Since the printed circuit board assembly adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0094] This embodiment of the application provides a plurality of comb teeth 11 on the board body of the printed circuit board 10, and the plurality of comb teeth 11 are spaced apart in the width direction. Compared with the scheme of first setting the printed circuit board 10 on the whole board, it can greatly reduce the amount of printed circuit board 10 used, reduce the production and manufacturing cost of the backlight module, and the small area of ​​the printed circuit board 10 can avoid the phenomenon of warping caused by stress concentration.

[0095] Furthermore, at least two of the printed circuit boards 10 are interlocked with each other via their comb teeth 11, thereby connecting at least two of the printed circuit boards 10 and facilitating the transportation and storage of multiple printed circuit boards 10 at one time.

[0096] Furthermore, in one embodiment, the comb tooth portion 11 has a first portion 111, a second portion 112, and a third portion 113 arranged sequentially along its length direction; along the width direction of the comb tooth portion 11, two adjacent second portions 112 of the comb tooth portion 11 are spaced apart, and the distance between two adjacent second portions 112 is b, where 0 < b ≤ 2 mm.

[0097] In the technical solution of this embodiment, during the manufacturing process, the second portion 112 can be cut using a V-CUT process, thereby forming a gap of 0 to 2 mm between the second portions 112 of two adjacent comb teeth 11. In contrast, the gap formed by ordinary laser cutting is generally greater than 2 mm. Therefore, the width of the second portion 112 can be effectively increased, allowing it to accommodate the installation of LED lights with a wider spacing, and less waste is generated during cutting, thus improving the utilization rate of the printed circuit board 10.

[0098] Meanwhile, in one embodiment, the first portion 111 and / or the third portion 113 of two adjacent comb teeth 11 are connected by a bridge connection 13. This arrangement connects two adjacent comb teeth 11 through the bridge connection 13, thereby enabling at least two printed circuit boards 10 to be connected together, facilitating the transportation and storage of the printed circuit board assembly. When individual use is required, the printed circuit board assembly can be divided into several independent printed circuit boards 10 by cutting the bridge connection 13.

[0099] Furthermore, the printed circuit board assembly has a first end and a second end disposed opposite to each other in the length direction of the comb portion 11, and at least two printed circuit boards 10 include a first printed circuit board 15 and a second printed circuit board 16, with the connection portion 12 of the first printed circuit board 15 located at the first end of the printed circuit board assembly, and the connection portion 12 of the second printed circuit board 16 located at the second end of the printed circuit board assembly.

[0100] Based on this, please refer to Figure 5 and Figure 7 In one embodiment, the two adjacent comb teeth 11 of the second printed circuit board 16 are sandwiched on both sides of the width direction of one of the comb teeth 11 of the first printed circuit board 15. With this arrangement, two printed circuit boards 10 can be produced at one time.

[0101] It should also be noted that the widths of the multiple comb teeth 11 can be equal or unequal; no limitation is made here. Figure 5 The widths between the multiple comb teeth 11 of the first printed circuit board 15 and the second printed circuit board 16 are equal. Correspondingly, at this time, the distance between two comb teeth 11 on the same printed circuit board 10 is the width of the comb teeth 11 plus the spacing required for the V-CUT process. This facilitates the mass production of printed circuit boards 10 of the same specifications.

[0102] Please see Figure 7 , Figure 7 The widths between the two comb teeth 11 on the first printed circuit board 15 are not equal. Correspondingly, the distance between the two comb teeth 11 on the same printed circuit board 10 is the width of the comb teeth 11 being clamped plus the spacing required for the V-CUT process.

[0103] Of course, two adjacent comb teeth 11 located on the printed circuit board 10 can also simultaneously clamp multiple comb teeth 11 on other circuit boards. For details, please refer to [link / reference needed]. Figure 6 In one embodiment, at least two of the printed circuit boards 10 include at least two first printed circuit boards 15 and a second printed circuit board 16, the two first printed circuit boards 15 are arranged adjacent to each other, and the two adjacent comb teeth 11 of the second printed circuit board 16 are sandwiched between the two adjacent comb teeth 11 of the two first printed circuit boards 15.

[0104] At this point, the printed circuit board assembly can be cut to obtain multiple printed circuit boards 10, which is more convenient for transportation and storage, and can be adapted to install LEDs with larger spacing.

[0105] For further details, please refer to Figures 2 to 4 This utility model also proposes a light strip, which includes a printed circuit board 10 and LED beads 30. The LED beads 30 are encapsulated on the printed circuit board 10. The specific structure of the printed circuit board 10 is as described in the above embodiments. Since this light strip adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0106] In addition, please see Figure 3The LED bead 30 can be installed at the middle position in the width direction of the comb tooth portion 11, which facilitates the heat dissipation of the LED bead 30. Alternatively, it can be installed at a non-center position in the width direction of the comb tooth portion 11 of the printed circuit board 10. This is not limited here.

[0107] Please see Figure 2 and Figure 4 In one embodiment, the LED beads 30 are mounted on the comb portion 11 of the printed circuit board 10 at a position other than the center line in its width direction. Correspondingly, at this time, the LED beads 30 that the printed circuit board 10 can accommodate have a larger spacing range, and jumpers can be reduced, saving costs.

[0108] For further details, please refer to Figure 8 This utility model also proposes a backlight 100, which includes an adapter plate 40 and a plurality of light strips. The adapter plate 40 is provided with a plurality of mounting positions at intervals along its length direction. The plurality of light strips are mounted at the mounting positions and are arranged at intervals along the length direction of the adapter plate 40. The specific structure of the light strips refers to the above embodiments. Since this backlight 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0109] In addition, please see Figures 9 to 12 In one embodiment, the connecting portion 12 of the printed circuit board 10 is provided with a mounting groove 14. The printed circuit board 10 has a first side 17 and a second side 18 disposed opposite to each other in its thickness direction. The LED beads 30 are encapsulated on the first side 17 of the printed circuit board 10. The connector 20 is installed in the mounting groove 14 and at least partially protrudes from the second side 18 of the printed circuit board. The second side 18 of the printed circuit board 10 is attached to the adapter plate 40. In the technical solution of this embodiment, the connector 20 is located on the second side 18 of the printed circuit board. Therefore, the connection with the adapter plate 40 is also made on the second side 18 of the light strip. After installation, the adapter plate 40 will also be located on the second side 18 of the light strip. At this time, the adapter plate is less likely to block the LED beads, facilitates wiring, and can improve the picture quality of the display device.

[0110] This utility model also proposes a backlight module, which includes a rotating backlight 100. The specific structure of the backlight 100 is as described in the above embodiments. Since this backlight module adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0111] This utility model also proposes a display device, which includes a backlight module. The specific structure of the backlight module is as described in the above embodiments. Since this display device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0112] The printed circuit boards, components, backlights, backlight modules, and display devices 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. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A printed circuit board, characterized in that, include: The plate body is used for mounting LED beads. The plate body has multiple comb teeth and connecting parts. Each comb tooth has a first end and a second end that are arranged opposite to each other in its length direction. The connecting parts connect the first ends of multiple comb teeth, and the multiple comb teeth are spaced apart in its width direction. The comb teeth have a first portion, a second portion, and a third portion arranged sequentially along its length. The width of the second portion is greater than that of the first portion and / or the third portion.

2. The printed circuit board according to claim 1, characterized in that, The number of comb teeth on the plate is less than or equal to 5; and / or The plate has two comb teeth.

3. The printed circuit board according to claim 1, characterized in that, The difference between the width of the second portion and the width of the first portion and / or the third portion is a, where 0 mm < a < 2 mm.

4. The printed circuit board according to claim 1, characterized in that, The first portion and / or the third portion are provided with bridge connecting portions on both sides along the width direction, and the bridge connecting portions are spaced apart from the second portion along the length direction of the comb portion.

5. The printed circuit board according to claim 1, characterized in that, The connecting part is provided with a mounting part, which is used for mounting the connector.

6. The printed circuit board according to claim 5, characterized in that, The mounting part includes a mounting groove, which is arranged to penetrate the connecting part along the thickness direction of the plate.

7. The printed circuit board according to claim 6, characterized in that, The opening end of the mounting groove extends to the side of the connecting portion away from the comb teeth; and / or, The connecting part is also provided with an observation window that communicates with the mounting slot; and / or, The connecting part is provided with a boosting hole, and the boosting hole is spaced apart from the mounting groove.

8. The printed circuit board according to claim 1, characterized in that, The printed circuit board also includes a connecting piece, which connects to a plurality of the comb teeth and is spaced apart from the connecting parts.

9. A printed circuit board assembly, characterized in that, include: At least two printed circuit boards, the printed circuit boards being the printed circuit boards as described in any one of claims 1 to 8, wherein the at least two printed circuit boards are interlocked with each other via their comb-like portions.

10. The printed circuit board assembly according to claim 9, characterized in that, The comb teeth have a first portion, a second portion, and a third portion arranged sequentially along its length. Along the width direction of the comb teeth, the second portions of two adjacent comb teeth are spaced apart, and the distance between two adjacent second portions is b, where 0 < b ≤ 2 mm; and / or, The first and / or third portions of two adjacent comb teeth are connected by a bridge connection.

11. The printed circuit board assembly according to claim 9 or 10, characterized in that, The printed circuit board assembly has a first end and a second end disposed opposite to each other in the length direction of the comb portion, and at least two printed circuit boards include a first printed circuit board and a second printed circuit board, wherein the connection portion of the first printed circuit board is located at the first end of the printed circuit board assembly, and the connection portion of the second printed circuit board is located at the second end of the printed circuit board assembly. The second printed circuit board has two adjacent comb teeth sandwiched on either side of one of the comb teeth of the first printed circuit board in the width direction; or, The at least two printed circuit boards include at least two first printed circuit boards and a second printed circuit board, the two first printed circuit boards are arranged adjacent to each other, and the two adjacent comb teeth of the second printed circuit board are sandwiched between the two adjacent comb teeth of the two first printed circuit boards.

12. A light strip, characterized in that, include: A printed circuit board, as described in any one of claims 1 to 8; as well as, LED beads are packaged on the printed circuit board.

13. The light strip as described in claim 12, characterized in that, The LED beads are mounted on the comb portion of the printed circuit board at a position other than the centerline in its width direction.

14. The light strip as described in claim 12, characterized in that, The printed circuit board has a mounting groove on its connection part. The printed circuit board has a first side and a second side that are arranged opposite to each other in its thickness direction. The LED beads are encapsulated on the first side of the printed circuit board. The light strip also includes a connector that is mounted in the mounting slot and at least partially protrudes from the second side of the printed circuit board.

15. A backlight source, characterized in that, include: An adapter plate, wherein a plurality of mounting positions are provided at intervals along its length; Multiple light strips, as described in any one of claims 12 to 14, are installed at the mounting position and spaced apart along the length of the adapter plate.

16. The backlight as described in claim 15, characterized in that, The printed circuit board of the light strip has a first side and a second side disposed opposite to each other in its thickness direction; The second side of the printed circuit board is attached to the adapter board.

17. A backlight module, characterized in that, Includes the backlight source as described in claim 15 or 16.

18. A display device, characterized in that, Including the backlight module as described in claim 17.

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