CN213815346U - Display module and LED display screen - Google Patents
Display module and LED display screen Download PDFInfo
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- CN213815346U CN213815346U CN202022318476.3U CN202022318476U CN213815346U CN 213815346 U CN213815346 U CN 213815346U CN 202022318476 U CN202022318476 U CN 202022318476U CN 213815346 U CN213815346 U CN 213815346U
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Abstract
The application discloses a display module and an LED display screen, wherein the display module comprises a printed circuit board, a mask and a magnetic part; the magnetic part is fixedly connected with the printed circuit board, and the face mask covers the surface of the printed circuit board; a first magnetic adsorption force is formed between the mask and the magnetic part; the mask is connected to the printed circuit board by a first magnetic attraction force. The application provides a display module assembly, through the first magnetism adsorption affinity between magnetic part and the face guard, connect face guard and printed circuit board, the operation is very simple to after the equipment is accomplished, also easily dismantle.
Description
Technical Field
The application relates to the technical field of display, especially, relate to a display module assembly and LED display screen.
Background
The LED display screen is widely applied to more and more scenes such as outdoor display, monitoring centers, advertisement/media display, stages and the like. If large-area LED display is to be realized, LED lamp beads need to be connected into a matrix through a circuit, and then the LED lamp bead matrix is controlled to emit light through a control chip, so that diversified display can be realized. At present, LED lamp beads are usually mounted on a PCB, and are arranged on the PCB in an array mode and connected through a circuit on the PCB. When the LED display screen is prepared, the LED lamp beads are prepared on the printed circuit board, and then a face mask needs to be arranged, the face mask is covered on the printed circuit board to protect the LED lamp beads, and the contrast of the display screen is improved by the face mask.
At present, the mode that face guard and printed circuit board are connected is mostly bolt or viscose etc.. However, the bolt fixing method usually requires a large number of bolts, and the operation is time-consuming; the adhesive fixing method is difficult to disassemble.
SUMMERY OF THE UTILITY MODEL
The application aims at providing a display module, which is characterized in that a magnetic material is added in a mask, so that the mask has adsorption force; then arranging a corresponding adsorption part on the printed circuit board, so that the mask is fixed through the adsorption part; the operation is simple, and the disassembly and maintenance are easy.
The application provides a display module, which comprises a printed circuit board, a mask and a magnetic part; the magnetic part is fixedly connected with the printed circuit board, and the face mask covers the surface of the printed circuit board; a first magnetic adsorption force is formed between the mask and the magnetic part; the mask is connected to the printed circuit board by a first magnetic attraction force.
The display module as above, wherein the printed circuit board is provided with a through hole, and the magnetic member is mounted in the through hole.
The display module is characterized in that one side of the face mask facing the printed circuit board is provided with a clamping groove; one end of the magnetic part facing the mask extends out of one side of the printed circuit board facing the mask and is clamped in the clamping groove.
Display module assembly as above, wherein, display module assembly still includes: a rear housing; the printed circuit board is provided with a first surface and a second surface which are oppositely arranged, and the mask covers the first surface of the printed circuit board; the number of the display modules is at least two, and the rear shell covers the second surfaces of the printed circuit boards of the at least two display modules; the rear shell and the magnetic pieces of the at least two display modules are connected through second magnetic adsorption force.
The display module as above, wherein one end of the magnetic member departing from the mask extends out of the second surface of the printed circuit board and is fixedly connected with the rear shell.
Display module assembly as above, wherein, display module assembly still includes: a connecting member; the connecting piece is connected with one side of the rear shell facing the printed circuit board; the material of the connecting piece comprises a magnetic material; and a third magnetic adsorption force is formed between the connecting piece and the magnetic piece, and the rear shell is connected with the printed circuit board through the third magnetic adsorption force.
The display module as above, wherein the number of the magnetic members is at least two, and the at least two magnetic members are uniformly distributed on the printed circuit board.
The display module as above, wherein the mask is made of metal magnetic material, or made of magnetic material and plastic.
The display module as above, wherein, under the condition that the face mask is made of magnetic material and plastic, the mass percentage A of the magnetic material satisfies the following condition: a is more than or equal to 50 percent and less than or equal to 90 percent.
An LED display screen comprises at least two display modules.
The display module assembly that this application embodiment provided, through the first magnetism adsorption affinity between magnetic part and the face guard, is connected face guard and printed circuit board, and the operation is very simple to after the equipment is accomplished, also easily dismantle.
Drawings
In order to more clearly illustrate the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also use the drawings to obtain other drawings without creative efforts.
FIG. 1 is a top view of a mask provided by an embodiment of the present application;
fig. 2 is a schematic structural diagram of a display module according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a printed circuit board provided in an embodiment of the present application;
FIG. 4 is a schematic structural diagram of another printed circuit board provided in the embodiments of the present application;
fig. 5 is a schematic structural diagram of a display module according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a display module according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a display module according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a display module according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of a display module according to an embodiment of the present disclosure;
fig. 10 is a schematic structural diagram of a display module according to an embodiment of the present application.
Description of reference numerals:
100-printed circuit board, 110-LED lamp bead, 200-mask, 210-card slot, 300-magnetic part, 400-back shell and 500-connecting part.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
An LED display screen is formed by the concatenation of a plurality of display screen boxes, and every display screen box includes box frame and a plurality of display module assembly, and every display module assembly includes printed circuit board and covers the face guard of closing on printed circuit board. For example, a square LED display screen is formed by splicing two rows and two columns of square display screen boxes. Four display modules arranged in two rows and two columns are installed in a box body frame of the square display screen box body. Each display module has a respective printed circuit board and a face mask. The specific structure of the mask is shown in figure 1.
Referring to fig. 2, the display module according to the embodiment of the present application includes a printed circuit board 100, a mask 200, and a magnetic member 300. The magnetic member 300 is fixedly connected with the printed circuit board 100, and the mask 200 covers the surface of the printed circuit board 100; a first magnetic adsorption force is formed between the mask 200 and the magnetic member 300; the mask 200 is coupled to the printed circuit board 100 by a first magnetic attraction force.
It can be understood that the face mask 200 covers a side surface of the printed circuit board 100 having the LED lamp beads 110, i.e., a left side surface in fig. 2.
The mask 200 may be made of a metal magnetic material, or a magnetic material and plastic. Specifically, the mask 200 may be a metal mask 200, a metal plastic mask 200 formed by coating a plastic coating on the surface of a metal core, a plastic metal mask 200 formed by coating a metal coating on the surface of a plastic core, or a plastic metal mask 200 formed by adding magnetic powder to a plastic matrix. With the metal cover 200, it is possible to ensure that the first suction force is strong enough to make the connection of the cover 200 and the printed circuit board 100 more reliable. The mask 200 made of a mixture of plastic and metal can reduce the weight of the mask 200 while ensuring that the printed circuit board 100 and the mask 200 are connected by the first suction force, thereby reducing the weight of the display module.
Optionally, when the plastic metal mask 200 is formed by adding magnetic powder to a plastic substrate, the mass percentage a of the magnetic powder satisfies the following condition: a is more than or equal to 50% and less than or equal to 90%; if the mass percentage a of the magnetic powder satisfies the above condition, the weight of the mask 200 can be reduced while the strength of the first adsorption force is ensured.
Optionally, the magnetic material comprises ferrite magnetic powder or rare earth magnetic powder; the plastic includes at least one of a thermoplastic resin, a phenolic resin, or a thermosetting resin. The thermoplastic resin includes at least one of polyamide, polyphenylene sulfide, polyethylene, polypropylene, polyvinyl chloride, polybutylene terephthalate, or ethylene-acetic acid copolymer.
The display module assembly that this application embodiment provided, through the first magnetism adsorption affinity between magnetic part 300 and face guard 200, with face guard 200 and printed circuit board 100 connection, the operation is very simple, also easily dismantles. In addition, after the display module assembly with the structure is assembled, the surface of the mask 200 is relatively flat. And the magnetic member 300 can also play a role in conducting heat generated by the display module during operation, in addition to providing magnetic attraction, thereby improving the heat dissipation capability of the display module.
Further, the printed circuit board 100 is provided with a through hole in which the magnetic member 300 is mounted. Both ends of the magnetic member 300 may be flush with both side surfaces of the printed circuit board 100, respectively, so that the printed circuit board 100 is kept flat.
Specifically, the printed circuit board 100 is provided with a through hole penetrating in the thickness direction, and then the magnetic member 300 is fixed in the through hole. The magnetic member 300 may be connected to the inner sidewall of the through hole by an interference fit or an adhesive bonding method. It will be understood by those skilled in the art that the cross-section of the magnetic member 300 may be circular, semicircular, triangular or square, and the like, and correspondingly, the shape of the through-hole is also circular, semicircular, triangular or square, and the like.
It will also be appreciated by those skilled in the art that in order to equalize the forces on the mask 200, a plurality of through holes may be provided on the printed circuit board 100, which are evenly distributed on the printed circuit board 100. Each through hole is provided with one magnetic element 300, so that the stress balance of the mask 200 can be improved, and the mask 200 is smoother. Specifically, referring to fig. 3, a total of five through holes may be disposed at four corners and a center of the pcb 100; referring to fig. 4, a total of eight through holes may be disposed at four corners and a middle position of each edge of the printed circuit board 100.
Referring to fig. 5, optionally, in one embodiment, a card slot 210 is provided on a side of the mask 200 facing the printed circuit board 100; one end of the magnetic member 300 facing the mask 200 extends out of one side of the printed circuit board 100 facing the mask 200 and is snapped into the snap groove 210. For convenience of description, a side of the printed circuit board 100 facing the mask 200, that is, a left side surface in fig. 5 is a first surface; the side of the printed circuit board 100 facing away from the mask 200, i.e., the right side surface in fig. 5, is a second surface, and the first surface and the second surface are oppositely disposed.
Referring to the direction of fig. 5, it can be seen that the left end of the magnetic member 300 extends out of the first surface of the printed circuit board 100, and the extended portion can be clamped in the clamping groove 210 of the mask 200, so as to increase the connection strength between the mask 200 and the printed circuit board 100 and prevent the mask 200 from falling off.
Referring to fig. 6, optionally, in an embodiment, the display module further includes a rear case 400, and the rear case 400 covers the second surface of the printed circuit board 100. If the number of the display modules is at least two, the rear case 400 covers the second surfaces of the printed circuit boards 100 of the at least two display modules; the rear case 400 and the magnetic members 300 of the at least two display modules have a second magnetic attraction force therebetween, and the rear case 400 and the printed circuit boards 100 of the at least two display modules are connected by the second magnetic attraction force. That is, no matter there are two, three or four display module assemblies, the display module assembly does not all set up solitary substrate, but a backshell 400 of sharing, and this backshell 400 is used for synthesizing a whole with each display module assembly, can also protect the display module assembly simultaneously. Taking the case that four display modules are mounted in two rows and two columns in the box frame of the square display screen box as an example, each display module has its own printed circuit board 100 and face mask 200, and the four display modules share one rear case 400. One display module is shown in fig. 6, and the remaining display modules are the same as those shown in fig. 6, and thus are not all shown.
Therefore, at the moment, the face mask 200 is connected with the printed circuit board 100 through the first magnetic adsorption force, the printed circuit board 100 is connected with the rear shell 400 through the second magnetic adsorption force, namely the printed circuit board 100, the face mask 200 and the rear shell 400 are connected through the magnetic adsorption force, so that the structural stability is enhanced, and the assembly difficulty is reduced. In addition, because the rear shell 400 is directly arranged, an independent substrate does not need to be arranged, the structure of the display module is simplified, gaps between the rear shell and all the display modules can be enlarged, and the heat dissipation effect can be improved.
Referring to fig. 7, optionally, in one embodiment, an end of the magnetic member 300 facing away from the mask 200 extends out of the second surface of the printed circuit board 100 and is fixedly connected to the rear case 400. That is, the left end of the magnetic member 300 protrudes out of the left side surface of the printed circuit board 100 and is fixed with the rear case 400.
Referring to fig. 8, optionally, in one embodiment, a card slot 210 is provided on a side of the mask 200 facing the printed circuit board 100; the left end of the magnetic member 300 protrudes out of the left side surface of the printed circuit board 100; meanwhile, the right end of the magnetic member 300 protrudes out of the right side surface of the printed circuit board 100; and the left end of the magnetic member 300 is inserted into the insertion groove 210 of the face mask 200, and the right end is fixedly coupled to the rear case 400. That is, the mask 200, the printed circuit board 100 and the rear case 400 are connected as a whole through the magnetic member 300, thereby further enhancing the structural stability and strength of the display module.
Referring to fig. 9, optionally, in an embodiment, the display module further includes a connecting member 500. The connector 500 is connected to a side of the rear case 400 facing the printed circuit board 100; the material of the connector 500 includes a magnetic material; a third magnetic attraction force is provided between the connector 500 and the magnetic member 300, and the rear case 400 is connected to the printed circuit board 100 by the third magnetic attraction force. Specifically, the connection member 500 may be made of a permanent magnet, or may be made of other materials that can be easily magnetized.
In this embodiment, both ends of the magnetic member 300 are flush with both side surfaces of the printed circuit board 100, respectively, and the position of the connector 500 on the rear case 400 corresponds to the position of the magnetic member 300 on the printed circuit board 100, and then the rear case 400 and the printed circuit board 100 are connected by the third magnetic attraction force between the magnetic member 300 and the connector 500. Thereby enhancing the coupling strength between the rear case 400 and the printed circuit board 100 so that the rear case 400 is not easily detached.
Referring to fig. 10, optionally, in one embodiment, a card slot 210 is provided on a side of the mask 200 facing the printed circuit board 100; the left end of the magnetic member 300 protrudes out of the left side surface of the printed circuit board 100; meanwhile, a connector 500 is provided, the connector 500 being connected to a side of the rear case 400 facing the printed circuit board 100; the material of the connector 500 includes a magnetic material; a third magnetic attraction force is provided between the connector 500 and the magnetic member 300, and the rear case 400 is connected to the printed circuit board 100 by the third magnetic attraction force. That is, the mask 200 and the pcb 100 are fixed by two connection methods, i.e., a first suction force and a card slot 210; the rear case 400 is connected to the printed circuit board 100 by a second adsorption force, thereby enhancing the structural stability and strength of the display module.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (6)
1. A display module is characterized by comprising a printed circuit board, a mask and a magnetic part;
the magnetic part is fixedly connected with the printed circuit board, and the face shield covers the surface of the printed circuit board; a first magnetic adsorption force is formed between the mask and the magnetic part; the mask is connected with the printed circuit board through the first magnetic adsorption force;
the printed circuit board is provided with a through hole, and the magnetic part is arranged in the through hole; a clamping groove is formed in one side, facing the printed circuit board, of the face mask; one end of the magnetic part facing the mask extends out of one side of the printed circuit board facing the mask and is clamped in the clamping groove; the mask is made of a metal magnetic material.
2. The display module assembly of claim 1, wherein the display module assembly further comprises: a rear housing;
the printed circuit board is provided with a first surface and a second surface which are oppositely arranged, and the mask covers the first surface of the printed circuit board;
the number of the display modules is at least two, and the rear shell covers the second surfaces of the printed circuit boards of the at least two display modules; the rear shell and at least two of the display module assemblies have second magnetic adsorption force between the magnetic pieces, and the rear shell and at least two of the display module assemblies are connected through the second magnetic adsorption force.
3. The display module assembly of claim 2, wherein an end of the magnetic member facing away from the cover extends beyond the second surface of the printed circuit board and is fixedly connected to the rear housing.
4. The display module assembly of claim 2, wherein the display module assembly further comprises: a connecting member;
the connecting piece is connected with one side of the rear shell facing the printed circuit board; the connecting piece is made of a magnetic material; the connecting piece with have the third magnetic adsorption power between the magnetic part, the backshell passes through the third magnetic adsorption power with printed circuit board connects.
5. The display module according to any one of claims 1 to 4, wherein the number of the magnetic members is at least two, and at least two of the magnetic members are uniformly distributed on the printed circuit board.
6. An LED display screen, characterized in that the LED display screen comprises at least two display modules according to any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022318476.3U CN213815346U (en) | 2020-10-16 | 2020-10-16 | Display module and LED display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022318476.3U CN213815346U (en) | 2020-10-16 | 2020-10-16 | Display module and LED display screen |
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| CN213815346U true CN213815346U (en) | 2021-07-27 |
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| CN202022318476.3U Active CN213815346U (en) | 2020-10-16 | 2020-10-16 | Display module and LED display screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114141147A (en) * | 2021-12-07 | 2022-03-04 | 昆山国显光电有限公司 | Flexible display module and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114141147A (en) * | 2021-12-07 | 2022-03-04 | 昆山国显光电有限公司 | Flexible display module and electronic equipment |
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