LED display module and LED display screen

Abstract

The utility model belongs to the technical field of LED display, and particularly relates to an LED display module and an LED display screen, the LED display module comprises a substrate and a first packaging layer, a plurality of LED light-emitting units are arranged on the substrate, the LED light-emitting units and the surface of the substrate are covered by the first packaging layer, and the first packaging layer is arranged on the substrate. A first sealing assembly is arranged at the joint of the graphene frame and the second packaging layer, a base film, an anti-dazzle layer and an antireflection layer are sequentially arranged on the first packaging layer from bottom to top, and black underfill is arranged on the portion, between the two sets of LED light-emitting units, of the substrate. The second sealing assembly is arranged at the joint of the graphene frame and the first packaging layer, and the third sealing assembly is arranged at the joint of the graphene frame and the substrate, so that water vapor can be prevented from entering the display module, and the phenomenon that the display module is damaged due to the water vapor can be avoided; and the service life of the display module is prolonged to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of LED display, in particular to an LED display module and an LED display screen. Background Art

[0002] The reflection of ambient light by the display is one of the key factors affecting contrast. Especially for indoor displays with low brightness, the impact of ambient light on contrast is more significant. The reflection of ambient light by the integrated packaged LED display is mainly contributed by the upper surface of the PCB substrate, the pad, the LED light-emitting chip, and the surface of the packaging layer. The industry can significantly reduce the intensity of reflected light from the PCB substrate, the pad, and the LED light-emitting chip by bottom inkjet and reducing the transmittance of the packaging layer. However, due to the difference in refractive index between the packaging material and the air, there is about 4% reflected light on the surface of the packaging layer. When the ambient light is strong, glare will be generated, seriously affecting the viewing experience.

[0003] In order to avoid glare on the surface, most products on the market will form an AG anti-glare layer on the surface through an uneven surface structure. However, the anti-glare layer cannot reduce the reflected light on the surface of the packaging layer. Instead, it evenly disperses the reflected light at a single angle to all angles, making the display look whitish under ambient light, resulting in a reduction in the contrast of the LED display.

[0004] Although the existing patent CN220290811U discloses an LED display module and an LED display screen, in this patent, the encapsulation layer only covers the surface of the substrate, which causes the water vapor to enter the interior of the display module through the connection between the encapsulation layer and the substrate, thereby affecting the use of the display module. Therefore, an LED display module and an LED display screen are invented. Utility Model Content

[0005] In view of the above and / or existing problems in an existing LED display module and LED display screen, the present utility model is proposed.

[0006] Therefore, the purpose of the present invention is to provide an LED display module and an LED display screen, which can solve the above-mentioned existing problems.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] An LED display module comprises a substrate and a first packaging layer, wherein a plurality of LED light-emitting units are arranged on the substrate, the surfaces of the LED light-emitting units and the substrate are covered by the first packaging layer, a base film, an anti-glare layer and an anti-reflection layer are arranged on the first packaging layer in order from bottom to top, a black bottom fill is arranged on the substrate between two groups of LED light-emitting units, and further comprises:

[0009] a second encapsulation layer, the second encapsulation layer being disposed on an upper surface of the anti-reflection layer;

[0010] A graphene frame, wherein the graphene frame is arranged on the surface of the substrate, and an inner cavity of the graphene frame is provided with an LED light-emitting unit, a first encapsulation layer, a base film, an anti-glare layer, an anti-reflection layer, a black bottom fill and a second encapsulation layer;

[0011] A first sealing component is provided at the connection between the graphene frame and the second packaging layer, a second sealing component is provided at the connection between the graphene frame and the first packaging layer, and a first sealing component is provided at the connection between the graphene frame and the substrate.

[0012] As a preferred solution of the LED display module described in the utility model, wherein: the material of the first packaging layer is set to be thermally conductive silicone, and the material of the second packaging layer is set to be thermally conductive silicone.

[0013] As a preferred solution of the LED display module described in the utility model, the first sealing component includes:

[0014] A first mounting groove, wherein the first mounting groove is provided on the inner surface of the top end of the graphene frame;

[0015] The first sealing strip is arranged in the first mounting groove, and the first sealing strip is in close contact with the second packaging layer.

[0016] As a preferred solution of an LED display module described in the utility model, the second sealing component includes:

[0017] A second mounting groove, wherein the second mounting groove is provided on the inner surface of the bottom end of the graphene frame;

[0018] A second sealing strip is disposed in the second mounting groove and is in close contact with the first packaging layer.

[0019] As a preferred solution of the LED display module described in the utility model, the third sealing component includes:

[0020] A third mounting groove, wherein the third mounting groove is provided on the bottom of the graphene frame;

[0021] The third sealing strip is arranged in the third installation groove, and the third sealing strip is in close contact with the substrate.

[0022] As a preferred solution of the LED display module described in the utility model, it also includes:

[0023] A heat dissipation component can dissipate heat from the bottom of the LED light-emitting unit, and the heat dissipation component is arranged between the LED light-emitting unit and the substrate.

[0024] As a preferred solution of an LED display module described in the utility model, the heat dissipation component includes:

[0025] A heat-conducting rubber plate is provided on the substrate located on both sides of the LED light-emitting unit, and the heat-conducting rubber plate is in contact with one side of the bottom of the LED light-emitting unit;

[0026] The heat-conducting rubber block is integrally arranged on the top of the heat-conducting rubber plate, and the heat-conducting rubber block is in contact with the first packaging layer.

[0027] An LED display screen comprises the LED display module described above.

[0028] Compared with existing technologies:

[0029] By setting a first sealing component at the connection between the graphene frame and the second packaging layer, by setting a second sealing component at the connection between the graphene frame and the first packaging layer, and by setting a third sealing component at the connection between the graphene frame and the substrate, it is possible to prevent water vapor from entering the interior of the display module, thereby preventing the display module from being damaged by water vapor, etc., thereby improving the service life of the display module to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the front view of the structure of the utility model;

[0031] Figure 2 For this utility model Figure 1 A schematic diagram of the structure enlargement in the middle;

[0032] Figure 3 This is a schematic diagram of the graphene frame structure of the utility model;

[0033] Figure 4 This is a schematic diagram of the structure of the heat dissipation component of the utility model.

[0034] In the figure: substrate 10, LED light-emitting unit 20, first encapsulation layer 30, base film 40, anti-glare layer 50, anti-reflection layer 60, black bottom fill 70, second encapsulation layer 80, graphene frame 90, first mounting groove 91, first sealing strip 92, second mounting groove 93, second sealing strip 94, third mounting groove 95, third sealing strip 96, thermally conductive rubber plate 100, thermally conductive rubber block 110. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] The utility model provides an LED display module, please refer to Figure 1-Figure 4 , comprising a substrate 10 and a first packaging layer 30, a plurality of LED light emitting units 20 are arranged on the substrate 10, the surfaces of the LED light emitting units 20 and the substrate 10 are covered by the first packaging layer 30, a base film 40, an anti-glare layer 50 and an anti-reflection layer 60 are arranged on the first packaging layer 30 from bottom to top, and a black bottom filler 70 is arranged on the substrate 10 between two groups of LED light emitting units 20;

[0037] Also includes: a second packaging layer 80, a graphene frame 90;

[0038] The second packaging layer 80 is arranged on the upper surface of the anti-reflection layer 60, the graphene frame 90 is arranged on the surface of the substrate 10, and the inner cavity of the graphene frame 90 is provided with the LED light-emitting unit 20, the first packaging layer 30, the base film 40, the anti-glare layer 50, the anti-reflection layer 60, the black bottom fill 70 and the second packaging layer 80, the connection between the graphene frame 90 and the second packaging layer 80 is provided with a first sealing component, the connection between the graphene frame 90 and the first packaging layer 30 is provided with a second sealing component, and the connection between the graphene frame 90 and the substrate 10 is provided with a third sealing component, the material of the first packaging layer 30 is set to thermal conductive silicone, and the material of the second packaging layer 80 is set to thermal conductive silicone. By selecting the material as thermal conductive silicone, it has the function of dissipating heat for the LED light-emitting unit 20, wherein the graphene frame 90 is composed of graphene, and the graphene has the function of good thermal conductivity.

[0039] The first sealing assembly includes: a first mounting groove 91 and a first sealing strip 92;

[0040] The first mounting groove 91 is opened on the inner surface of the top end of the graphene frame 90 . The first sealing strip 92 is arranged in the first mounting groove 91 , and the first sealing strip 92 is in close contact with the second packaging layer 80 .

[0041] The second sealing assembly includes: a second mounting groove 93 and a second sealing strip 94;

[0042] The second mounting groove 93 is formed on the inner surface of the bottom end of the graphene frame 90 . The second sealing strip 94 is disposed in the second mounting groove 93 , and the second sealing strip 94 is in close contact with the first encapsulation layer 30 .

[0043] The third sealing assembly includes: a third mounting groove 95 and a third sealing strip 96;

[0044] The third mounting groove 95 is opened on the bottom of the graphene frame 90 , the third sealing strip 96 is arranged in the third mounting groove 95 , and the third sealing strip 96 is in close contact with the substrate 10 .

[0045] It also includes: a heat dissipation component capable of dissipating heat from the bottom of the LED light-emitting unit 20, and the heat dissipation component is arranged between the LED light-emitting unit 20 and the substrate 10;

[0046] The heat dissipation assembly includes: a heat-conducting rubber plate 100 and a heat-conducting rubber block 110;

[0047] A thermally conductive rubber plate 100 is provided on the substrate 10 located on both sides of the LED light-emitting unit 20, and the thermally conductive rubber plate 100 is in contact with one side of the bottom of the LED light-emitting unit 20. A thermally conductive rubber block 110 is integrally arranged on the top of the thermally conductive rubber plate 100, and the thermally conductive rubber block 110 is in contact with the first packaging layer 30. The thermally conductive rubber plate 100 and the thermally conductive rubber block 110 are both made of thermally conductive rubber, and the thermally conductive rubber has a good thermal conductivity.

[0048] An LED display screen comprises the LED display module described above.

[0049] Assembly process:

[0050] Step 1: a plurality of LED light-emitting units 20 are arranged on the substrate 10, and then the surfaces of the LED light-emitting units 20 and the substrate 10 are covered by the first packaging layer 30, and then a base film 40, an anti-glare layer 50 and an anti-reflection layer 60 (at least one group) are arranged on the first packaging layer 30 from bottom to top, wherein a black bottom filler 70 is arranged on the substrate 10 between two groups of LED light-emitting units 20;

[0051] Step 2: a second encapsulation layer 80 is disposed on the anti-reflection layer 60, and then a first sealing strip 92, a second sealing strip 94 and a third sealing strip 96 are disposed in the first mounting groove 91, the second mounting groove 93 and the third mounting groove 95 respectively, and finally, the graphene frame 90 is disposed on the substrate 10;

[0052] Step 3: Before the LED light-emitting unit 20 is arranged on the substrate 10 , a heat dissipation component needs to be arranged on the substrate 10 to dissipate heat from the bottom of the LED light-emitting unit 20 .

[0053] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An LED display module, comprising a substrate (10) and a first packaging layer (30), wherein a plurality of LED light-emitting units (20) are arranged on the substrate (10), the surfaces of the LED light-emitting units (20) and the substrate (10) are covered by the first packaging layer (30), a base film (40), an anti-glare layer (50) and an anti-reflection layer (60) are arranged on the first packaging layer (30) in order from bottom to top, and a black bottom filler (70) is arranged on the substrate (10) between two groups of LED light-emitting units (20), characterized in that: Also includes: a second encapsulation layer (80), the second encapsulation layer (80) being arranged on the upper surface of the anti-reflection layer (60); A graphene frame (90), the graphene frame (90) being arranged on the surface of the substrate (10), and the inner cavity of the graphene frame (90) being provided with an LED light-emitting unit (20), a first encapsulation layer (30), a base film (40), an anti-glare layer (50), an anti-reflection layer (60), a black bottom fill (70), and a second encapsulation layer (80); A first sealing component is provided at the connection between the graphene frame (90) and the second packaging layer (80), a second sealing component is provided at the connection between the graphene frame (90) and the first packaging layer (30), and a third sealing component is provided at the connection between the graphene frame (90) and the substrate (10).

2. The LED display module according to claim 1, characterized in that: The material of the first packaging layer (30) is set to be thermally conductive silicone, and the material of the second packaging layer (80) is set to be thermally conductive silicone.

3. The LED display module according to claim 1, characterized in that: The first sealing assembly comprises: A first mounting groove (91), the first mounting groove (91) being formed on the inner surface of the top end of the graphene frame (90); A first sealing strip (92), wherein the first sealing strip (92) is arranged in the first installation groove (91), and the first sealing strip (92) is in close contact with the second packaging layer (80).

4. The LED display module according to claim 1, characterized in that: The second sealing assembly comprises: A second mounting groove (93), wherein the second mounting groove (93) is provided on the inner surface of the bottom end of the graphene frame (90); A second sealing strip (94), wherein the second sealing strip (94) is arranged in the second installation groove (93), and the second sealing strip (94) is in close contact with the first packaging layer (30).

5. The LED display module according to claim 1, characterized in that: The third sealing assembly comprises: A third mounting groove (95), the third mounting groove (95) being formed on the bottom of the graphene frame (90); A third sealing strip (96), wherein the third sealing strip (96) is arranged in the third installation groove (95), and the third sealing strip (96) is in close contact with the base plate (10).

6. The LED display module according to claim 1, characterized in that: Also includes: A heat dissipation component is provided which can dissipate heat from the bottom of an LED light-emitting unit (20), and the heat dissipation component is arranged between the LED light-emitting unit (20) and a substrate (10).

7. The LED display module according to claim 6, characterized in that: The heat dissipation component comprises: A heat-conducting rubber plate (100), wherein the heat-conducting rubber plate (100) is provided on the substrate (10) located on both sides of the LED light-emitting unit (20), and the heat-conducting rubber plate (100) is in contact with one side of the bottom of the LED light-emitting unit (20); A heat-conducting rubber block (110) is integrally arranged on the top of the heat-conducting rubber plate (100), and the heat-conducting rubber block (110) is in contact with the first packaging layer (30).

8. An LED display screen, characterized in that: An LED display module comprising any one of claims 1-7.

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