A method for manufacturing and installing a sandstone encapsulation layer on the surface of an LED screen

Abstract

The present invention discloses a method for making and installing sandstone decorative packaging on the surface of an LED screen. The method comprises: determining the constituent materials of the sandstone packaging layer; determining the thickness of the sandstone packaging layer according to the degree of angular diffusion of the light emitted by the sandstone packaging layer on the LED lamp beads; determining the target particle size value and proportion of the aggregate corresponding to the pixel spacing of different LED screen lamp beads according to the particle size value and mass proportion of the aggregate, and the degree of influence on the luminous flux, bright area ratio, surface roughness and strength performance of the LED screen; determining the mass proportion of the adhesive and the aggregate according to the degree of influence on the porosity, luminous flux, surface roughness and strength performance of the sandstone packaging layer, thereby determining the sandstone packaging layer. The present invention can make an overall package for a single LED module or a whole LED screen composed of multiple LED modules, so that the LED screen has waterproof, wear-resistant and impact-resistant effects, and the surface has no joints and is flat and smooth as a whole.

Description

Technical Field

[0001] The invention relates to the technical field of LED screens, and in particular to a method for manufacturing and installing a sandstone packaging layer on the surface of an LED screen. Background Art

[0002] Existing LED screens use transparent epoxy resin or transparent granular materials to protect the surface of the lamp beads. The existing packaging layer is made of transparent material and has no diffusion effect on the light of the lamp beads, and does not play a role in increasing the proportion of the screen's bright area, which may cause blue light damage. Figure 1 The method of the prior art shown to increase the proportion of bright areas and reduce blue light damage is to add a translucent PC mask of the same size in front of a single module, and use screws to pass through the PCB board and connect it to the bracket. The PC mask is assembled from single modules of the same size, resulting in the existence of splicing bright light gaps between modules due to the leakage of light from the lamp beads, which seriously affects the video effect. The PC mask and the module are connected by screws, and the PC mask and the module are not truly combined into one, so the surface is not smooth and does not have the function of waterproof and moisture-proof. After multiple separate PC masks and modules are packaged and spliced ​​into a whole LED screen, when the screen surface needs to be swapped for decoration in the later stage, such as covering with veneer, film materials, and printing, the splicing seams will cause the veneer and film materials to be uneven and torn, and the printed pattern has splicing seams that are not beautiful. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and provide a method for producing and installing a sandstone packaging layer on the surface of an LED screen, so as to solve the technical problems in the prior art of producing a packaging layer and adopting a packaging method in order to increase the proportion of the bright area of ​​the screen, which is prone to the occurrence of splicing seams, resulting in an uneven surface, lack of waterproof and moisture-proof functions, and an uneven surface.

[0004] In order to solve the above problems, the present invention adopts the following technical solutions:

[0005] In a first aspect, the present invention provides a method for manufacturing a sandstone encapsulation layer on the surface of an LED screen, characterized by comprising:

[0006] determining the constituent materials of the sandstone encapsulation layer, wherein the constituent materials include aggregate and binder;

[0007] Determine the thickness of the sandstone encapsulation layer according to the degree of angular diffusion of the light emitted by the LED lamp beads by the sandstone encapsulation layer;

[0008] According to the particle size value and mass ratio of the aggregate, the influence on the luminous flux, bright area ratio, surface roughness and strength performance of the LED screen is determined to determine the target particle size value and proportion of the aggregate corresponding to the pixel spacing of different LED screen lamp beads;

[0009] Determine the mass ratio of the binder to the aggregate according to the influence of the mass ratio of the binder on the porosity, luminous flux, surface roughness and strength properties of the sandstone encapsulation layer;

[0010] Based on the constituent materials, the sandstone encapsulation layer is determined according to the thickness of the sandstone encapsulation layer, the target particle size value and ratio, and the mass ratio of the binder to the aggregate.

[0011] In some embodiments, determining the thickness of the sandstone encapsulation layer according to the degree of angular diffusion of the light emitted by the LED lamp beads by the sandstone encapsulation layer includes:

[0012] Determine the pixel spacing between adjacent LED beads on the LED screen;

[0013] Based on a preset experimental method, the size relationship between the thickness of the sandstone encapsulation layer and the pixel pitch is determined according to the pixel pitch.

[0014] In some embodiments, the relationship between the thickness of the sandstone encapsulation layer and the pixel pitch is as follows: the thickness of the sandstone encapsulation layer is determined to be half of the pixel pitch.

[0015] In some embodiments, the particle size value and mass ratio of the aggregate have an influence on the luminous flux, bright area ratio, surface roughness and strength performance of the LED screen, including:

[0016] Based on the preset experimental method, it is found that the larger the particle size value, the greater the luminous flux of the aggregate to the LED screen, the lower the light diffusion, the greater the surface roughness after bonding and molding by the adhesive, and the lower the strength performance;

[0017] Based on the preset experimental method, it is found that the smaller the particle size value is, the smaller the luminous flux of the aggregate to the LED screen is, the higher the light diffusion is, the smaller the surface roughness after bonding with the adhesive is, and the higher the strength performance is.

[0018] In some embodiments, the determination of the target particle size value and ratio of aggregate corresponding to different LED screen lamp bead pixel spacings at least includes:

[0019] When the pixel spacing of the LED screen lamp beads is greater than or equal to 8 mm, the particle size value of the aggregate is 0.83 mm;

[0020] When the pixel pitch of the LED screen is 6 mm, the particle size values ​​of the aggregate include 0.83 mm and 0.38 mm; wherein the aggregate with a particle size of 0.83 accounts for 85% to 75%, and the aggregate with a particle size of 0.38 accounts for 15% to 25%;

[0021] When the pixel pitch of the LED screen is 5 mm, the particle size values ​​of the aggregate include 0.83 mm and 0.38 mm; wherein the aggregate with a particle size of 0.83 accounts for 45% to 55%, and the aggregate with a particle size of 0.38 accounts for 45% to 55%;

[0022] When the pixel pitch of the LED screen lamp beads is 2.5 mm, the particle size values ​​of the aggregate include 0.38 mm, 0.25 mm and 0.18 mm; among them, the aggregate with a particle size of 0.38 accounts for 15% to 25%, the aggregate with a particle size of 0.25 accounts for 45% to 55%, and the aggregate with a particle size of 0.18 accounts for 40% to 20%.

[0023] In some embodiments, the influence of the mass ratio of the adhesive on the porosity, light flux, surface roughness and strength properties of the sandstone encapsulation layer includes:

[0024] Based on the preset experimental method, it is found that the higher the specific gravity of the adhesive, the lower the porosity of the sandstone encapsulation layer after being bonded and formed by the adhesive, the higher the luminous flux, the lower the light diffusion, the lower the surface roughness and the higher the strength performance;

[0025] Based on the preset experimental method, it is found that the lower the specific gravity of the adhesive used, the higher the porosity of the sandstone encapsulation layer after being bonded and formed by the adhesive, the lower the luminous flux, the higher the diffusivity of light, the higher the surface roughness and the lower the strength performance.

[0026] In some embodiments, determining the mass ratio of the binder to the aggregate comprises at least:

[0027] When the pixel pitch of the LED screen lamp beads is greater than or equal to 8 mm, 50 to 70 grams of the adhesive are added per 1000 grams of the aggregate;

[0028] When the pixel pitch of the LED screen lamp beads is 6 mm, 55 g to 75 g of the adhesive is added per 1 kg of the aggregate;

[0029] When the pixel pitch of the LED screen lamp beads is 4 mm, 60 g to 80 g of the adhesive is added per 1 kg of the aggregate.

[0030] In some embodiments, the determining of the sandstone encapsulation layer based on the constituent materials, according to the thickness of the sandstone encapsulation layer, the target particle size value and ratio, and the mass ratio of the binder to the aggregate, comprises:

[0031] Based on the constituent materials, according to the thickness of the sandstone encapsulation layer, the target particle size value and ratio, and the mass ratio of the binder to the aggregate, a resin sand mixer is used for high-speed sand mixing, and a preset curing agent is added to obtain an initial sandstone encapsulation layer;

[0032] After a preset waiting time, resin material is added to obtain a sandstone encapsulation layer.

[0033] In a second aspect, the present invention further provides a method for installing a sandstone encapsulation layer on the surface of an LED screen, comprising:

[0034] Step 1: Place the LED screen to be packaged with the lamp beads facing upwards on the platform;

[0035] Step 2: Based on the thickness of the sandstone encapsulation layer, a template is used to surround the LED screen to be encapsulated;

[0036] Step 3, spreading the sandstone slurry mixed according to the method for making the sandstone encapsulation layer on the surface of the LED screen as described in claims 1 to 8 on the surface of the lamp beads of the LED screen to be encapsulated, and patting it flat;

[0037] Step 4: Cover the flattened sandstone slurry with a flat plate with release paper, and apply a preset pressure on the plate until the sandstone slurry solidifies, then remove the module and tear off the release paper.

[0038] Compared with the prior art, the manufacturing method and installation method of the sandstone encapsulation layer on the surface of the LED screen provided by the present invention first determine the constituent materials of the sandstone encapsulation layer, which include aggregates and adhesives; then determine the thickness of the sandstone encapsulation layer according to the degree of angular diffusion of the light emitted by the LED lamp beads by the sandstone encapsulation layer; and determine the target particle size value and ratio of the aggregate corresponding to the pixel spacing of different LED screen lamp beads according to the particle size value and mass ratio of the aggregate and the degree of influence on the luminous flux, bright area ratio, surface roughness and strength performance of the LED screen; then determine the mass ratio of the adhesive to the aggregate according to the degree of influence of the mass ratio of the adhesive on the porosity, luminous flux, surface roughness and strength performance of the sandstone encapsulation layer; finally, based on the constituent materials, the sandstone encapsulation layer is determined according to the thickness of the sandstone encapsulation layer, the target particle size value and ratio and the mass ratio of the adhesive to the aggregate. The sandstone packaging layer determined by the sandstone production method and packaging method of the present invention can be used to package a single LED module, or to package an entire LED screen composed of multiple LED modules, so that the LED screen can achieve waterproof, wear-resistant, and impact-resistant effects while having a surface without joints, and being overall flat and smooth. Film materials such as veneer can be applied to the surface, and deep processing techniques such as printing can be performed.

[0039] Furthermore, by controlling the ratio of different aggregate particle sizes and the ratio of adhesives in the simulated sandstone layer, the particle size and porosity affect the light diffusion and luminous flux, and then adjusting the relationship between the screen pixel spacing and the thickness of the simulated sandstone layer, the light output angle of the lamp beads is changed to make the light spots formed by the lamp beads projected on the surface of the simulated sandstone layer close to the light spots of adjacent lamp beads, and do not overlap each other, and there is no cross-light phenomenon between adjacent lamp beads, so that the proportion of the bright area of ​​the screen is ≥90%. By controlling the ratio of aggregates of different particle sizes and the ratio of adhesives, the cured simulated sandstone encapsulation layer naturally forms a translucent hole-like structure that has a blocking and filtering effect on blue light with a wavelength of ≤460nm, so that the screen has no radiation with a wavelength of 380nm-400nm, and the radiation brightness (light intensity) of blue light with a wavelength of 460nm is ≤9.9E-03W / (㎡·sr·nm). The simulated sandstone layer on the surface of the screen has a dense structural strength and hydrophobicity, and has extremely high waterproof, dustproof and impact resistance. The adhesive only has a bonding effect on the aggregate, rather than completely filling the gaps between the aggregates, so the surface is translucent white imitation sandstone effect. The entire LED screen surface is encapsulated with imitation sandstone, and the surface of the imitation sandstone encapsulation layer on the LED screen surface is flat and has no joints. The smooth surface of the LED screen imitation sandstone encapsulation layer is processed with UV printing and film attachment materials to obtain a variety of decorative surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the LED screen packaging method in the prior art involved in the present invention;

[0041] Figure 2 It is a flow chart of an embodiment of a method for manufacturing a sandstone encapsulation layer on the surface of an LED screen provided by the present invention;

[0042] Figure 3 It is a schematic diagram of the diffusion of the light emission angle of the lamp beads by the sandstone encapsulation layer in the method for manufacturing the sandstone encapsulation layer on the surface of the LED screen provided by the present invention;

[0043] Figure 4 It is a schematic diagram of the relationship between the thickness of the sandstone encapsulation layer and the pixel pitch in the method for manufacturing the sandstone encapsulation layer on the surface of the LED screen provided by the present invention;

[0044] Figure 5 It is a flow chart of an embodiment of a method for installing a sandstone encapsulation layer on the surface of an LED screen provided by the present invention;

[0045] Figure 6 In the method for manufacturing the sandstone encapsulation layer on the surface of the LED screen provided by the present invention, Figure 5 Schematic diagram of applying pressure above the sandstone magma in step 4;

[0046] Figure 7It is a schematic diagram of sandstone coating in the method for manufacturing the sandstone packaging layer on the surface of the LED screen provided by the present invention;

[0047] Figure 8 It is a schematic diagram of another embodiment of the LED screen sandstone encapsulation layer coating in the method for manufacturing the LED screen surface sandstone encapsulation layer provided by the present invention;

[0048] Fig. 9 It is a schematic diagram of another embodiment of the LED screen sandstone packaging layer coating in the method for manufacturing the LED screen surface sandstone packaging layer provided by the present invention. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0050] The present invention provides a method for manufacturing a sandstone encapsulation layer on the surface of an LED screen. Figure 2 ,include:

[0051] S201, determining constituent materials of the sandstone encapsulation layer, wherein the constituent materials include aggregate and binder;

[0052] S202, determining the thickness of the sandstone encapsulation layer according to the degree of angular diffusion of the light emitted by the LED lamp beads by the sandstone encapsulation layer;

[0053] S203, according to the particle size value and mass ratio of the aggregate, and the influence degree on the luminous flux, bright area ratio, surface roughness and strength performance of the LED screen, determine the target particle size value and proportion of the aggregate corresponding to the pixel spacing of different LED screen beads;

[0054] S204, determining the mass ratio of the adhesive to the aggregate according to the influence of the mass ratio of the adhesive on the porosity, luminous flux, surface roughness and strength properties of the sandstone encapsulation layer;

[0055] S205. Determine a sandstone encapsulation layer based on the constituent materials, according to the thickness of the sandstone encapsulation layer, the target particle size value and ratio, and the mass ratio of the binder to the aggregate.

[0056] In this embodiment, the sandstone packaging layer determined by the sandstone manufacturing method and packaging method of the present invention can be used to package a single LED module, or to package an entire LED screen composed of multiple LED modules, so that the LED screen can achieve waterproof, wear-resistant, and impact-resistant effects while having a surface without joints, and being overall flat and smooth. Film materials such as veneer can be applied to the surface, and deep processing techniques such as printing can be used.

[0057] It should be noted that, in addition to the aggregate and the binder, the constituent materials may also include other materials, which may be added according to the actual packaging and production requirements. It is understandable that when making the sandstone packaging layer, in this embodiment, the aggregate and the binder are mainly and preferentially used as the main constituent materials.

[0058] Furthermore, hollow glass microspheres, glass microspheres, glass sand, quartz sand and other transparent or translucent particles can be used as aggregates. Transparent epoxy resin is used as the adhesive, and one or more of silicone resin, acrylic resin, phenolic resin, polyester resin, polyurethane resin, silicone-modified epoxy resin, silicone-modified polyester resin and silicone-modified acrylic resin can also be used as the adhesive. And according to the selected adhesive, a matching curing agent and catalyst are used.

[0059] It should be noted that the influence of aggregate particle size and adhesive mass ratio on the luminous flux, porosity, bright area ratio, surface roughness and strength performance of LED screen is used as the judgment standard of particle size and adhesive dosage. On the one hand, the performance superposition of these indicators directly determines the quality of LED screen. On the other hand, through the analysis of these performance indicators, the best combination of particle size and adhesive dosage can be found, thereby optimizing the performance of LED screen.

[0060] In some embodiments, determining the thickness of the sandstone encapsulation layer according to the degree of angular diffusion of the light emitted by the LED lamp beads by the sandstone encapsulation layer includes:

[0061] Determine the pixel spacing between adjacent LED beads on the LED screen;

[0062] Based on a preset experimental method, the size relationship between the thickness of the sandstone encapsulation layer and the pixel pitch is determined according to the pixel pitch.

[0063] In this embodiment, if Figure 3 As shown, the imitation sandstone encapsulation layer has a diffusion effect on the light output angle of the lamp beads. Controlling the thickness of the imitation sandstone encapsulation layer on the upper surface of the lamp beads can adjust the proportion of the light spot bright area formed on the surface of the imitation sandstone encapsulation layer. The sandstone encapsulation layer of the LED screen can affect the light output effect of the LED lamp beads at different angle diffusion degrees. The role of the sandstone encapsulation layer is to improve the visual effect of the LED screen by adjusting and diffusing the angle of light, so that it can present a wider visual range. When determining the thickness of the sandstone encapsulation layer, it is necessary to first consider the pixel spacing of adjacent lamp beads of the LED screen. Pixel spacing refers to the distance between the centers of two adjacent LED lamp beads, usually in millimeters.

[0064] Specifically, based on the preset experimental method, the relationship between the thickness of the sandstone encapsulation layer and the pixel pitch can be determined through a series of pre-set experiments. First, select an appropriate pixel pitch. Then, adjust the thickness of the sandstone encapsulation layer through experiments. In each experiment, the effect of the thickness of the sandstone encapsulation layer on the degree of angular diffusion is evaluated by measuring and observing the visual effect of the LED screen. According to the experimental results, the relationship between the thickness of the sandstone encapsulation layer and the pixel pitch at different pixel pitches can be obtained, and the optimal thickness of the sandstone encapsulation layer can be found to enable the LED screen to achieve the desired degree of angular diffusion at a given pixel pitch.

[0065] In a specific embodiment, the relationship between the thickness of the sandstone encapsulation layer and the pixel pitch is: the thickness of the sandstone encapsulation layer is determined to be half of the pixel pitch. Figure 4 As shown, the pixel pitch of the LED screen is 4mm, and the thickness of the imitation sandstone layer on the upper surface of the lamp beads is 2mm.

[0066] In some embodiments, the particle size value and mass ratio of the aggregate have an influence on the luminous flux, bright area ratio, surface roughness and strength performance of the LED screen, including:

[0067] Based on the preset experimental method, it is found that the larger the particle size value, the greater the luminous flux of the aggregate to the LED screen, the lower the light diffusion, the greater the surface roughness after bonding and molding by the adhesive, and the lower the strength performance;

[0068] Based on the preset experimental method, it is found that the smaller the particle size value is, the smaller the luminous flux of the aggregate to the LED screen is, the higher the light diffusion is, the smaller the surface roughness after bonding with the adhesive is, and the higher the strength performance is.

[0069] In this embodiment, based on the preset experimental method, larger particle size aggregates will increase the luminous flux of the LED screen and reduce the diffusion of light, but will increase the roughness of the surface and reduce the strength performance. On the contrary, smaller particle size aggregates will reduce the luminous flux and increase the diffusion of light, but can reduce the roughness of the surface and improve the strength performance of the LED screen. These results can help manufacturers or engineers optimize the luminous flux, bright area ratio, surface roughness and strength performance of the LED screen when selecting the particle size value and mass ratio.

[0070] Therefore, by selecting the appropriate aggregate ratio, the sandstone encapsulation layer can have a better encapsulation effect, thereby optimizing the effect of the LED screen.

[0071] In a specific embodiment, the preferred LED screen lamp bead pixel pitch ratio is as follows:

[0072] The pixel spacing of LED screen lamp beads is ≥8mm, and the selected aggregate particle size is 0.83mm.

[0073] When the pixel pitch of the LED screen is 6mm, the mass fractions of aggregates of different particle sizes are as follows: aggregates with a particle size of 0.83mm account for 85% to 75%, and aggregates with a particle size of 0.38mm account for 15% to 25%.

[0074] The mass fractions of aggregates of different particle sizes selected for the LED screen with a pixel spacing of 5mm are as follows: aggregates with a particle size of 0.83mm account for 45% to 55%, and aggregates with a particle size of 0.38mm account for 55% to 45%.

[0075] The mass fractions of aggregates of different particle sizes selected for the LED screen pixel spacing of 4mm are: 15% to 25% for aggregates with a particle size of 0.83mm, and 85% to 75% for aggregates with a particle size of 0.38mm.

[0076] The mass fractions of aggregates of different particle sizes selected for the LED screen with a pixel spacing of 3mm are: 5% to 15% for aggregates with a particle size of 0.83mm, 50% to 60% for aggregates with a particle size of 0.38mm, and 45% to 25% for aggregates with a particle size of 0.25mm.

[0077] The mass fractions of aggregates of different particle sizes selected for the LED screen with a pixel spacing of 2.5mm are: 15% to 25% for aggregates with a particle size of 0.38mm, 45% to 55% for aggregates with a particle size of 0.25mm, and 40% to 20% for aggregates with a particle size of 0.18mm.

[0078] The mass fractions of aggregates of different particle sizes selected for the LED screen pixel spacing of 2mm are: 0.25mm aggregate accounts for 55% to 65%, and 0.18mm aggregate accounts for 45% to 35%.

[0079] The mass fractions of aggregates of different particle sizes selected for the LED screen pixel pitch of 1.86mm are as follows: aggregates of 0.25mm particle size account for 55% to 45%, and aggregates of 0.18mm particle size account for 45% to 55%.

[0080] The pixel spacing of LED screen lamp beads is ≦1.53mm. The mass fractions of aggregates of different particle sizes selected are: 0.25mm aggregate accounts for 35% to 25%, and 0.18mm aggregate accounts for 65% to 75%.

[0081] In some embodiments, the influence of the mass ratio of the adhesive on the porosity, light flux, surface roughness and strength properties of the sandstone encapsulation layer includes:

[0082] Based on the preset experimental method, it is found that the higher the specific gravity of the adhesive, the lower the porosity of the sandstone encapsulation layer after being bonded and formed by the adhesive, the higher the luminous flux, the lower the light diffusion, the lower the surface roughness and the higher the strength performance;

[0083] Based on the preset experimental method, it is found that the lower the specific gravity of the adhesive used, the higher the porosity of the sandstone encapsulation layer after being bonded and formed by the adhesive, the lower the luminous flux, the higher the diffusivity of light, the higher the surface roughness and the lower the strength performance.

[0084] In this embodiment, the effect of the mass ratio of the adhesive on the porosity and luminous flux of the sandstone encapsulation layer is obtained by a preset experimental method. The preset experimental results show that when the mass ratio of the adhesive is higher, the porosity of the treated sandstone encapsulation layer is lower, because the increase in the adhesive fills the gaps between the sandstone particles, thereby reducing the porosity. In addition, it has been experimentally verified that a high proportion of adhesive can increase the luminous flux of the LED screen, because more adhesive fills the tiny gaps, thereby reducing the reflection, scattering and refraction of light. This effect is similar to a decrease in porosity, that is, the lower the diffusivity of light.

[0085] Furthermore, in the pre-designed experiments, it was observed that a higher proportion of binder reduced the surface roughness of the sandstone encapsulation layer. The surface roughness is related to the gaps between the sandstone particles. Increasing the proportion of binder strengthens the interaction between the sandstone particles and reduces their gaps, resulting in a lower surface roughness. At the same time, applying less pressure makes the sandstone particles more tightly bonded with the binder, rather than squeezing the sandstone particles, thereby reducing the surface roughness.

[0086] Furthermore, a relationship between the mass ratio of adhesive and the strength performance of the sandstone encapsulation layer was obtained through a preset experimental method. The experimental results show that the sandstone encapsulation layer with a high adhesive ratio can better maintain its hardness and stability, because the adhesive can effectively bond the sandstone particles together, thereby improving the bending resistance and impact resistance of the sandstone encapsulation layer.

[0087] In a specific embodiment, the preferred LED screen lamp bead pixel pitch ratio is as follows:

[0088] The pixel spacing of LED screen lamp beads is ≥8mm, and 50g to 70g of adhesive is added for every 1000g of aggregate.

[0089] The pixel pitch of LED screen lamp beads is 6mm, and 55g to 75g of adhesive is added for every 1kg of aggregate.

[0090] The pixel pitch of LED screen beads is 5mm, and the ratio is 55g to 75g per 1000g of aggregate.

[0091] The pixel spacing of LED screen lamp beads is 4mm, and the ratio of adhesive is 60g to 80g for every 1000g of aggregate.

[0092] The pixel spacing of LED screen lamp beads is 3mm, and 65g to 85g of adhesive is added for every 1000g of aggregate.

[0093] The pixel pitch of LED screen beads is 2.5mm, and 65g to 85g of adhesive is added for every 1000g of aggregate.

[0094] The pixel spacing of LED screen beads is 2mm, and 70g to 90g of adhesive is added for every 1000g of aggregate.

[0095] The pixel pitch of LED screen beads is 1.86mm, and 75g to 95g of adhesive is added for every 1000g of aggregate.

[0096] The pixel pitch of LED screen lamp beads is ≤1.53mm, and 80g to 100g of adhesive is added for every 1000g of aggregate.

[0097] In some embodiments, the determining of the sandstone encapsulation layer based on the constituent materials, according to the thickness of the sandstone encapsulation layer, the target particle size value and ratio, and the mass ratio of the binder to the aggregate, comprises:

[0098] Based on the constituent materials, according to the thickness of the sandstone encapsulation layer, the target particle size value and ratio, and the mass ratio of the binder to the aggregate, a resin sand mixer is used for high-speed sand mixing, and a preset curing agent is added to obtain an initial sandstone encapsulation layer;

[0099] After a preset waiting time, resin material is added to obtain a sandstone encapsulation layer.

[0100] In this embodiment, for the process of manufacturing the sandstone encapsulation layer, a resin sand mixer can be used to mix sand at high speed, and then a preset curing agent is added to obtain the initial sandstone encapsulation layer. The resin sand mixer can help mix sand, adhesives and other additives to form a mixture with uniform thickness and low porosity. In the process of sand mixing, it is necessary to keep the sandstone particles, adhesives, additives and other substances together and maintain the uniformity of the mixture. Afterwards, after a preset waiting time, a resin material can be added to obtain a complete sandstone encapsulation layer. Adding resin materials can help fill the gaps between sandstone particles and improve the stability and strength performance of the entire sandstone encapsulation layer.

[0101] It should be noted that, in this embodiment, the preset waiting time is 1 hour.

[0102] Based on the above-mentioned method for manufacturing the sandstone encapsulation layer on the surface of the LED screen, the embodiment of the present invention also provides a method for installing the sandstone encapsulation layer on the surface of the LED screen, see Figure 5 and Figure 6 ,include:

[0103] Step 1: Place the LED screen to be packaged with the lamp beads facing upwards on the platform;

[0104] Step 2: Based on the thickness of the sandstone encapsulation layer, a template is used to surround the LED screen to be encapsulated;

[0105] Step 3: Spread the sandstone slurry mixed according to the method for making the sandstone encapsulation layer on the surface of the LED screen as described above on the surface of the lamp beads of the LED screen to be encapsulated, and pat it flat;

[0106] Step 4: Cover the flattened sandstone slurry with a flat plate with release paper, and apply a preset pressure on the plate until the sandstone slurry solidifies, then remove the module and tear off the release paper.

[0107] It should be noted that, in this embodiment, the preset pressure is 300 kilograms per square meter.

[0108] It should be noted that the flat plate may include an aluminum plate and a bakelite plate, etc.

[0109] In some embodiments, Figure 7 As shown, select a flat plate, such as glass, metal plate, etc., and use water to apply release paper on it. Use templates to surround the LED screen. Based on the thickness requirements of the imitation sandstone layer, the horizontal drop between the bottom edge of the template and the surface of the lamp beads is 1 / 2 of the pixel spacing of adjacent lamp beads on the LED screen. Spread the selected aggregate mixed with the adhesive evenly on the release paper, use a flat surface to pat it flat, and control the thickness of the mixed aggregate layer after patting to 3 / 5 of the pixel spacing of adjacent lamp beads on the LED screen. Based on the thickness requirement of 1 / 2 of the pixel spacing of the LED screen, because a part of the aggregate mixed with the adhesive will enter the gap between the lamp beads during the pressing process, the thickness of the mixed aggregate layer here is controlled to 3 / 5 of the pixel spacing of adjacent lamp beads, for example Figure 7 The pixel pitch of the LED screen shown is 4mm, and the thickness of the mixed adhesive aggregate layer is 2.4mm. Place the selected LED screen lamp beads face down on the patted mixed aggregate, and apply a pressure of no less than 300 kg per square meter on the back of the LED screen lamp beads. You can evenly cover it with heavy objects or use a laminator. After the mixed aggregate is cured, remove the template and tear off the release paper to obtain the surface of the imitation sandstone encapsulation layer similar to the smoother ceramic tile and rock slab effect.

[0110] Furthermore, Figure 8 As shown, based on the packaged sandstone layer, various decorative patterns such as wood grain and wood grain can be printed on the surface of the LED screen using a UV printer to obtain a decorative effect consistent with building decoration materials such as tiles and rock slabs. Fig. 9As shown, the finished imitation sandstone package LED screen surface is sprayed with plasticized vinyl acetate emulsion. After the plasticized vinyl acetate emulsion is dried, the selected film material is thermoplastically pasted on the screen surface at a temperature of 110 degrees. When the surface attached material is wood veneer, the wood decorative surface effect can be obtained by spraying paint and other processes. Pasting PVC film and other materials can obtain various decorative effects such as wood grain and stone grain printed on the surface of various PVC films.

[0111] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for manufacturing a sandstone encapsulation layer on the surface of an LED screen, characterized in that: include: determining the constituent materials of the sandstone encapsulation layer, wherein the constituent materials include aggregate and binder; The thickness of the sandstone encapsulation layer is determined according to the degree of angular diffusion of the light emitted by the LED lamp beads by the sandstone encapsulation layer; wherein the relationship between the thickness of the sandstone encapsulation layer and the pixel pitch is as follows: the thickness of the sandstone encapsulation layer is determined to be half of the pixel pitch; According to the particle size value and mass proportion of the aggregate, and the degree of influence on the luminous flux, bright area ratio, surface roughness and strength performance of the LED screen, the target particle size value and proportion of the aggregate corresponding to the pixel spacing of the LED screen beads are determined; wherein, when the pixel spacing of the LED screen beads is greater than and equal to 8 mm, the particle size value of the aggregate is 0.83 mm; when the pixel spacing of the LED screen beads is 6 mm, the particle size values ​​of the aggregate include 0.83 mm and 0.38 mm; wherein, the proportion of aggregate with a particle size value of 0.83 mm is 85%~75%, and the proportion of aggregate with a particle size value of 0.38 mm is 15%~25%; when the LED screen When the pixel pitch of the curtain lamp beads is 5 mm, the particle size values ​​of the aggregate include 0.83 mm and 0.38 mm; wherein, the aggregate with a particle size of 0.83 mm accounts for 45% to 55%, and the aggregate with a particle size of 0.38 mm accounts for 45% to 55%; when the pixel pitch of the LED screen lamp beads is 2.5 mm, the particle size values ​​of the aggregate include 0.38 mm, 0.25 mm and 0.18 mm; wherein, the aggregate with a particle size of 0.38 mm accounts for 15% to 25%, the aggregate with a particle size of 0.25 mm accounts for 45% to 55%, and the aggregate with a particle size of 0.18 mm accounts for 40% to 20%; According to the influence of the mass proportion of the adhesive on the porosity, luminous flux, surface roughness and strength performance of the sandstone encapsulation layer, the mass ratio of the adhesive to the aggregate is determined; wherein, when the pixel pitch of the LED screen beads is greater than or equal to 8 mm, 50 to 70 grams of the adhesive are mixed for every 1000 grams of the aggregate; when the pixel pitch of the LED screen beads is 6 mm, 55 to 75 grams of the adhesive are mixed for every 1 kilogram of the aggregate; when the pixel pitch of the LED screen beads is 4 mm, 60 to 80 grams of the adhesive are mixed for every 1 kilogram of the aggregate; Based on the constituent materials, the sandstone encapsulation layer is determined according to the thickness of the sandstone encapsulation layer, the target particle size value and ratio, and the mass ratio of the binder to the aggregate.

2. The method for manufacturing the sandstone encapsulation layer on the surface of the LED screen according to claim 1, characterized in that: Determining the thickness of the sandstone encapsulation layer according to the degree of angular diffusion of the light emitted by the LED lamp beads by the sandstone encapsulation layer includes: Determine the pixel spacing between adjacent LED beads on the LED screen; Based on a preset experimental method, the size relationship between the thickness of the sandstone encapsulation layer and the pixel pitch is determined according to the pixel pitch.

3. The method for manufacturing the sandstone encapsulation layer on the surface of the LED screen according to claim 1, characterized in that: The particle size and mass ratio of the aggregate have an impact on the luminous flux, bright area ratio, surface roughness and strength performance of the LED screen, including: Based on the preset experimental method, it is found that the larger the particle size value, the greater the luminous flux of the aggregate to the LED screen, the lower the light diffusion, the greater the surface roughness after bonding and molding by the adhesive, and the lower the strength performance; Based on the preset experimental method, it is found that the smaller the particle size value is, the smaller the luminous flux of the aggregate to the LED screen is, the higher the light diffusion is, the smaller the surface roughness after bonding with the adhesive is, and the higher the strength performance is.

4. The method for manufacturing the sandstone encapsulation layer on the surface of the LED screen according to claim 1, characterized in that: The influence of the mass ratio of the adhesive on the porosity, light flux, surface roughness and strength properties of the sandstone encapsulation layer includes: Based on the preset experimental method, it is found that the higher the specific gravity of the adhesive, the lower the porosity of the sandstone encapsulation layer after being bonded and formed by the adhesive, the higher the luminous flux, the lower the light diffusion, the lower the surface roughness and the higher the strength performance; Based on the preset experimental method, it is found that the lower the specific gravity of the adhesive used, the higher the porosity of the sandstone encapsulation layer after being bonded and formed by the adhesive, the lower the luminous flux, the higher the diffusivity of light, the higher the surface roughness and the lower the strength performance.

5. The method for manufacturing the sandstone encapsulation layer on the surface of the LED screen according to claim 1, characterized in that: The step of determining the sandstone encapsulation layer based on the constituent materials, according to the thickness of the sandstone encapsulation layer, the target particle size value and ratio, and the mass ratio of the binder to the aggregate comprises: Based on the constituent materials, according to the thickness of the sandstone encapsulation layer, the target particle size value and ratio, and the mass ratio of the binder to the aggregate, a resin sand mixer is used for high-speed sand mixing, and a preset curing agent is added to obtain an initial sandstone encapsulation layer; After a preset waiting time, resin material is added to obtain a sandstone encapsulation layer.

6. A method for installing a sandstone encapsulation layer on the surface of an LED screen, characterized in that: include: Step 1: Place the LED screen to be packaged with the lamp beads facing upwards on the platform; Step 2: Based on the thickness of the sandstone encapsulation layer, a template is used to surround the LED screen to be encapsulated; Step 3, spreading the sandstone slurry mixed according to the method for making the sandstone encapsulation layer on the surface of the LED screen as described in any one of claims 1 to 5 on the surface of the lamp beads of the LED screen to be encapsulated, and patting it flat; Step 4: Cover the flattened sandstone slurry with a flat plate with release paper, and apply a preset pressure on the plate until the sandstone slurry solidifies, then remove the module and tear off the release paper.

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