Flexible LED display module and display screen

Abstract

The utility model relates to a flexible LED display module and a display screen, and belongs to the technical field of flexible LED display screens. The flexible LED display module comprises a lamp panel, a soft bottom shell attached to the lamp panel and a plurality of magnet seats arranged in an array mode, the lamp panel is provided with a plurality of bonding pads corresponding to the magnet seats, tin grooves are formed in the bonding pads, a first end face of each magnet seat is provided with a soldering tin runner matched with the tin grooves, a second end face of each magnet seat is provided with a joint part, and the soldering tin runners are connected with the joint parts. The joint part is used for mounting a magnet, the soft bottom shell is provided with a plurality of through holes for embedding the magnet seat, the middle part of the soft bottom shell is provided with a support beam extending along the width direction of the lamp panel, and the outer surface of the magnet is flush with the outer surface of the soft bottom shell. According to the scheme provided by the utility model, the soldering quality is improved by optimizing soldering tin distribution and exhausting through the soldering tin flow channels, the deformation performance of the soft bottom shell is strengthened by using the supporting beams, the magnetic attraction span is shortened by using the magnet seats arranged in the array, and the splicing flatness between modules is comprehensively optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to LED display screen technical field especially relates to a kind of flexible LED display module and display screen. BACKGROUND

[0002] As the core component of the adaptive special-shaped display scene, the display effect of LED display screen depends on the splicing flatness of module and box. The traditional flexible LED display module usually adopts copper column welding process to realize the fixation of lamp panel and bottom shell. However, due to the factors such as the deviation of PCB lamp panel processing precision, the insufficient deformation control of soft bottom shell and the uneven distribution of soldering tin in the copper column welding process, the module is prone to local support force imbalance, which leads to uneven surface after splicing between modules. Specifically, the welding area of copper column and solder pad often causes air hole residue or solder accumulation due to the lack of solder tin flow guide structure, which further aggravates the deviation of lamp panel and bottom shell. In addition, the split design of traditional magnet seat and copper column leads to complex assembly process and insufficient magnet fixation stability, which is prone to displacement or loosening in long-term use, indirectly affecting the flatness between modules. Therefore, it is urgent to optimize the module structure design and welding process to systematically improve the matching precision and assembly reliability of key components between modules. SUMMARY

[0003] To overcome the problems in the related art, the utility model provides a kind of flexible LED display module, improves welding quality by optimizing solder tin distribution and exhaust through solder tin runner, strengthens the deformation performance of soft bottom shell by support beam and shortens magnetic attraction span by arrayed magnet seat, and comprehensively optimizes the splicing flatness between modules.

[0004] The utility model provides a kind of flexible LED display module in the first aspect of the utility model, including lamp panel, soft bottom shell that is attached to lamp panel and a plurality of arrayed magnet seats, the lamp panel is equipped with a plurality of corresponding solder pad of magnet seat, is equipped with tin groove in solder pad, the first end surface of magnet seat is equipped with the solder tin runner that is matched with tin groove, second end surface is equipped with joint, the joint is used to install magnet, the soft bottom shell is equipped with a plurality of embedding magnet seat's through-hole, and middle part has support beam that extends along the width direction of lamp panel, the outer surface of magnet is flush with the outer surface of soft bottom shell.

[0005] In some embodiments, the side of the soft bottom shell facing the lamp panel is provided with a groove for placing double-sided tape, and a positioning column is provided on the groove. The height of the positioning column is equal to the depth of the groove.

[0006] In some embodiments, the surface of the soft bottom shell away from the lamp panel is recessed to form a plurality of strip-shaped through grooves. The number of through grooves between adjacent through holes is the same.

[0007] In some embodiments, the number of through grooves between adjacent through holes is three.

[0008] In some embodiments, the lamp panel is a flexible PCB board, and a plurality of LED lamp beads are soldered on the flexible PCB board, and the soldering pads are arranged on the side of the flexible PCB board away from the LED lamp beads.

[0009] In some embodiments, the soldering flow channel comprises a boss arranged at the center of the first end face and a plurality of first arc-shaped ring walls arranged around the boss, the first arc-shaped ring walls and the boss enclose a ring-shaped flow channel, and gaps are arranged between adjacent first arc-shaped ring walls to assist in soldering exhaust.

[0010] In some embodiments, the joint comprises at least two second arc-shaped ring walls arranged at the edges of the second end face, the second arc-shaped ring walls enclose a cavity for accommodating the magnet, the cavity is in interference fit with the magnet, and adjacent second arc-shaped ring walls form a tool socket for inserting a tool to remove the magnet.

[0011] In some embodiments, the magnet seat is made of polyether ether ketone.

[0012] In some embodiments, the soft bottom shell is made of silica gel, and the silica gel is filled with carbon fibers.

[0013] The second aspect of the utility model provides a display screen, which comprises a case, a controller, a power adapter and a plurality of flexible LED display modules as described above, the controller and the power adapter are arranged in the case, and the magnet is magnetically attracted to the case, the controller is electrically connected to the power adapter, the plurality of flexible LED display modules are arranged in an array on the case, the controller comprises a plurality of signal output terminals, and each signal output terminal is connected to one flexible LED display module;

[0014] The power adapter comprises a plurality of power output terminals, and each power output terminal is connected to one flexible LED display module.

[0015] The technical scheme of the utility model has the following beneficial effects:

[0016] The flexible LED display module provided by the utility model has one end of the magnet seat for welding the lamp panel and the other end for mounting the magnet, and the copper column is omitted in structure, the soldering flow channel of the magnet seat and the soldering pads on the lamp panel can improve the uniformity of soldering distribution, and exhaust is realized through the flow channel, thereby reducing welding pores and improving the problem of uneven solder accumulation. Meanwhile, the magnet seats are arranged in an array on the lamp panel, the magnetic attraction span can be shortened, the uniformly distributed magnet seats can ensure the stress balance of the soft bottom shell after the soft bottom shell is assembled, and the added support beams can enhance the deformation performance of the soft bottom shell, thereby comprehensively optimizing the splicing flatness between the modules. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which like reference characters refer to like parts throughout the figures, and in which: the same reference numerals generally designate the same parts throughout the detailed description.

[0018] Figure 1 is a structural schematic view of a flexible LED display module shown in an embodiment of the present application;

[0019] Figure 2 is a structural schematic view of a lamp plate shown in an embodiment of the present application;

[0020] Figure 3 is a structural schematic view of a magnet seat shown in an embodiment of the present application;

[0021] Figure 4 is another structural schematic view of a magnet seat shown in an embodiment of the present application;

[0022] Figure 5 is a structural schematic view of a soft bottom shell shown in an embodiment of the present application;

[0023] Figure 6 is another structural schematic view of a soft bottom shell shown in an embodiment of the present application;

[0024] Figure 7 is a structural schematic view of a display screen shown in an embodiment of the present application.

[0025] Reference signs:

[0026] 1, flexible LED display module;

[0027] 10, lamp plate; 100, solder pad;

[0028] 11, soft bottom shell; 110, through hole; 111, support beam; 112, groove; 113, positioning column; 114, through slot;

[0029] 12, magnet seat; 120, solder flow channel; 1200, boss; 1201, first arc-shaped ring wall; 121, joint; 1210, second arc-shaped ring wall; 122, magnet;

[0030] 2, case; 3, controller; 4, power adapter. DETAILED DESCRIPTION

[0031] Preferred embodiments of the present application will be described in greater detail below, with reference to the accompanying drawings. While preferred embodiments of the present application are shown in the drawings, it is understood that the present application can be embodied in various forms without being limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0032] The terms used in the present application are merely for the purpose of describing particular embodiments and are not intended to limit the present application. The singular forms "a," "said," and "the" used in the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0033] The display effect of the flexible LED display screen depends on the splicing flatness of the module and the box body. The inventors found in the development process that factors affecting the flatness between the modules include PCB lamp plate 10 precision, soft bottom shell 11 precision and frame precision, and the main problem of these factors is material or installation process.

[0034] To solve the above problems, the embodiment of the present application provides a flexible LED display module 1, which optimizes the solder distribution and exhaust through the solder flow channel 120 to improve the welding quality, uses the supporting beam 111 to strengthen the deformation performance of the soft bottom shell 11, and uses the arrayed magnet seat 12 to shorten the magnetic attraction span, thereby comprehensively optimizing the splicing flatness between the modules.

[0035] The technical solutions of the embodiments of the present application will be described in detail below with reference to the drawings.

[0036] Figure 1 is a structural schematic diagram of the flexible LED display module 1 shown in the embodiment of the present application.

[0037] Referring to Figures 1 to 6 The present application provides a flexible LED display module 1, which comprises a lamp plate 10, a soft bottom shell 11 attached to the lamp plate 10, and a plurality of arrayed magnet seats 12. The lamp plate 10 is provided with a plurality of solder pads 100 corresponding to the magnet seats 12, and the solder pads 100 are provided with tin grooves. The first end surface of the magnet seat 12 is provided with a solder flow channel 120 matched with the tin groove, and the second end surface is provided with a joint part 121. The joint part 121 is used for mounting a magnet 122. The soft bottom shell 11 is provided with a plurality of through holes 110 embedding the magnet seats 12, and has a supporting beam 111 extending along the width direction of the lamp plate 10 in the middle part. The outer surface of the magnet 122 is flush with the outer surface of the soft bottom shell 11.

[0038] The lamp panel 10 is in a rectangular structure, the soft bottom shell 11 is attached to the edge of the lamp panel 10, a plurality of solder pads 100 are arranged uniformly along the length direction and the width direction (i.e. array arrangement) of the lamp panel 10 in the area of the lamp panel 10 attached by the soft bottom shell 11, for example, the number of solder pads 100 arranged in the width direction is six, and the number of solder pads 100 arranged in the length direction is eleven, the solder pad 100 is provided with a solder groove cooperating with the solder flow channel 120, and the shape of the solder groove can be designed as a ring, a grid and a radial shape. Through the specific distribution form of the ring, the grid or the radial shape, the solder groove and the solder flow channel 120 can form a controllable liquid solder flow path during the soldering process, ensure that the solder uniformly covers the soldering contact area of the two during the soldering process, reduce the soldering defects caused by local lack of solder or bubble residue, and improve the assembly precision and display effect consistency of the LED display screen module. The soft bottom shell 11 is in a rectangular frame structure, the soft bottom shell 11 is composed of two long sides and three short sides, the support beam 111 is the middle side of the three short sides, the support beam 111 is integrally formed with the soft bottom shell 11, and the two ends extend to the edge of the soft bottom shell 11, the width and thickness of the support beam 111 are the same as those of the remaining two short sides, so that the deformation is uniform and the deformation performance of the soft bottom shell is improved.

[0039] In the embodiment, one end of the magnet seat 12 is used for welding the lamp panel 10, and the other end is used for mounting the magnet 122, the copper column is omitted in structure, the solder flow channel 120 of the magnet seat 12 is designed to optimize the solder distribution and assist the soldering exhaust, the problems of air hole and uneven solder accumulation can be retrieved, and the arrangement mode of the magnet seat 12 on the lamp panel 10 is array arrangement, which can shorten the magnetic attraction span, and the added support beam 111 can enhance the deformation performance of the soft bottom shell 11, thereby comprehensively optimizing the splicing flatness between the modules.

[0040] In a preferred embodiment, the surface of the soft bottom shell 11 facing the lamp panel 10 is provided with a groove 112 for placing double-sided adhesive tape, the groove 112 is provided with a positioning column 113, the height of the positioning column 113 is equal to the depth of the groove 112, the depth of the groove 112 is equal to the thickness of the double-sided adhesive tape, the positioning column 113 is in a cylindrical structure, and the cooperation of the groove 112 and the positioning column 113 ensures the accurate positioning of the double-sided adhesive tape, avoids the offset of the adhesive tape, enhances the stability of the attachment of the lamp panel 10 and the bottom shell, and indirectly improves the overall flatness of the module.

[0041] On the basis of the above specific embodiments, the surface of the soft bottom shell 11 away from the lamp panel 10 is recessed to form a plurality of strip-shaped through grooves 114, the number of the through grooves 114 between adjacent through holes 110 is the same, the cross section of the through groove 114 is in an isosceles trapezoidal structure, which is narrow inside and wide outside, and the strip-shaped recess design of the through groove 114 enhances the flexibility and deformation adaptability of the soft bottom shell 11, makes the module more fit the special-shaped installation surface, and at the same time maintains the consistency of the support force of the adjacent magnet seats 12, thereby reducing the splicing stress.

[0042] Further, the number of through-slots 114 between adjacent through-holes 110 is three. Limiting the number of through-slots 114 between adjacent through-holes 110 to three takes into account both local flexibility and overall strength, avoiding the problem of insufficient support due to too many through-slots 114 or limited deformation due to too few through-slots 114.

[0043] In a preferred embodiment, the lamp panel 10 is a flexible PCB board with a plurality of LED lamp beads soldered thereon, and the soldering pad 100 is arranged on the side of the flexible PCB board away from the LED lamp beads. The flexible PCB board is adapted to the curved display requirement, and the soldering pad 100 is arranged on the back side to avoid interfering with the layout of the LED lamp beads. In combination with the soldering flow channel 120, the flatness of the soldering surface is optimized, and the display consistency is improved.

[0044] In a preferred embodiment, the soldering flow channel 120 includes a boss 1200 arranged at the center of the first end surface and a plurality of first arc-shaped ring walls 1201 arranged around the boss 1200. The first arc-shaped ring walls 1201 and the boss 1200 enclose a ring-shaped flow channel. There is a gap between adjacent first arc-shaped ring walls 1201. The boss 1200 and the arc-shaped ring wall of the ring-shaped soldering flow channel 120 are designed to guide the uniform diffusion of solder, the gap assists in exhaust, reduces soldering bubbles, and ensures that the soldering surface between the magnet seat 12 and the lamp panel 10 is completely bonded.

[0045] Further, the joint 121 includes at least two second arc-shaped ring walls 1210 arranged at the edge of the second end surface. The second arc-shaped ring walls 1210 enclose a cavity for accommodating the magnet 122. The cavity and the magnet 122 are in interference fit. Adjacent second arc-shaped ring walls 1210 form a tool insertion port for inserting a tool to remove the magnet 122. The interference fit of the arc-shaped ring wall of the joint 121 prevents the magnet 122 from loosening, the tool insertion port supports quick disassembly, and reduces the complexity of maintenance.

[0046] On the basis of the above specific embodiments, the inner circumferential wall of the second arc-shaped ring wall 1210 is circumferentially provided with a rib, and the outer circumferential wall of the magnet 122 is circumferentially provided with a groove 112. The clamping design of the rib and the groove 112 further limits the circumferential displacement of the magnet 122, enhancing long-term stability.

[0047] Further, the magnet seat 12 is made of polyether ether ketone. The magnet seat 12 made of polyether ether ketone (PEEK) has high heat resistance and mechanical strength, can withstand high temperature soldering and reduce deformation during long-term use, and improves the durability of the module.

[0048] Correspondingly, the material of the magnet seat 12 can also be copper or iron alloy, and the soldering flow channel 120 and the joint 121 can be formed by milling or powder sintering.

[0049] In practical application, the flexibility of the soft bottom shell 11 is suitable for curved surface installation, but lacks supporting structure, and is prone to local wrinkles due to uneven stress, and aggravates the height difference between the modules, in order to solve the technical problem, the utility model provides a soft bottom shell 11 is made of silica gel, silica gel is filled with carbon fiber, wherein, the mass fraction of the carbon fiber filled in the silica gel can be 12%, the carbon fiber reinforced silica gel bottom shell has flexibility and tensile strength, and the deformation of the bottom shell caused by temperature and humidity changes or stress is inhibited, and the overall flatness after the module splicing is ensured.

[0050] The assembly process of the flexible LED display module 1 provided by the utility model is as follows:

[0051] The soldering surface of the magnet base 12 is embedded into the soldering tin groove of the soldering pad 100, the solder tin is uniformly filled along the flow channel and exhausted through reflow soldering, and the flat soldering surface without air bubbles is formed.

[0052] The double-sided adhesive is accurately pasted into the groove 112 of the soft bottom shell 11, and the double-sided adhesive is limited by the positioning column 113, then the lamp panel 10 is adhered to the soft bottom shell 11, the magnet base 12 is embedded into the through hole 110 of the soft bottom shell 11, and the outer surface is ensured to be flush.

[0053] The magnet 122 is pressed into the cavity (interference fit) of the joint part 121 through the tool socket, and can be taken out by inserting the tool and prying when disassembling, without damaging the module structure.

[0054] Referring to Figure 7 The utility model further provides a display screen, including case 2, controller 3, power adapter 4 and a plurality of above-mentioned flexible LED display module 1, controller 3 and power adapter 4 are located in case 2, and magnet 122 and case 2 are magnetically attracted, controller 3 and power adapter 4 are electrically connected, a plurality of flexible LED display module 1 is arrayed on case 2.

[0055] Wherein, controller 3 includes a plurality of signal output ends, and each signal output end is connected with one flexible LED display module 1 respectively.

[0056] Wherein, power adapter 4 includes a plurality of power output ends, and each power output end is connected with one flexible LED display module 1 respectively.

[0057] In the embodiment, the modular design and independent control power supply support flexible splicing and local maintenance, the influence of the frame error of the box body on the flatness is reduced through high-precision module array, and the consistency of large-screen display effect is improved.

[0058] The above has described various embodiments of the present application, the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles, practical application, or improvement of technology in the market of the embodiments, or to enable other ordinary skilled in the art to understand the embodiments disclosed herein.

Claims

1. A flexible LED display module, characterized in that, The lamp panel, the soft bottom shell attached to the lamp panel, and a plurality of arrayed magnet seats are included. The lamp panel is provided with a plurality of pads corresponding to the magnet seats, and a tin groove is arranged in the pad. The first end surface of the magnet seat is provided with a soldering tin flow channel matched with the tin groove, and the second end surface is provided with a joint portion for mounting a magnet. The soft bottom shell is provided with a plurality of through holes for embedding the magnet seats, and a support beam extending along the width direction of the lamp panel is arranged in the middle portion. 2.The flexible LED display module of claim 1, wherein, The surface of the soft bottom shell facing the lamp panel is provided with a groove for placing double-sided adhesive tape, and a positioning column is arranged on the groove. The height of the positioning column is equal to the depth of the groove. 3.The flexible LED display module of claim 2, wherein, The surface of the soft bottom shell away from the lamp panel is recessed to form a plurality of strip-shaped through grooves, and the number of through grooves between adjacent through holes is the same.

4. The flexible LED display module of claim 3, wherein, The number of through grooves between adjacent through holes is three. 5.The flexible LED display module of claim 1, wherein, The lamp panel is a flexible PCB board, a plurality of LED lamp beads are soldered on the flexible PCB board, and the pads are arranged on the surface of the flexible PCB board away from the LED lamp beads. 6.The flexible LED display module of claim 5, wherein, The soldering tin flow channel includes a boss arranged at the center of the first end surface and a plurality of first arc-shaped ring walls arranged around the boss. The first arc-shaped ring walls and the boss enclose an annular flow channel. Adjacent first arc-shaped ring walls have gaps for assisting soldering tin exhaust.

7. The flexible LED display module of claim 6, wherein, The joint portion includes at least two second arc-shaped ring walls arranged at the edge of the second end surface. The second arc-shaped ring walls enclose a cavity for accommodating the magnet. The cavity is in interference fit with the magnet. Adjacent second arc-shaped ring walls form a tool insertion port for inserting a tool to remove the magnet. 8.The flexible LED display module of claim 1, wherein, The magnet seat is made of polyether ether ketone. 9.The flexible LED display module of claim 1, wherein, The soft bottom shell is made of silica gel, and the silica gel is filled with carbon fibers.

10. A display screen, characterized by The flexible LED display module includes a case, a controller, a power adapter, and a plurality of flexible LED display modules as claimed in any one of claims 1 to 9. The controller and the power adapter are arranged in the case, and the controller and the power adapter are electrically connected. The plurality of flexible LED display modules are arrayed on the case, and the magnets are magnetically attracted to the case. The controller includes a plurality of signal output terminals, and each signal output terminal is connected to one flexible LED display module. The power adapter includes a plurality of power output terminals, and each power output terminal is connected to one flexible LED display module.

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