WO2023082473A1 - Liquid-agent formula for hanging simple flexible led screen on wall, and laminated structure - Google Patents

Abstract

Disclosed in the present application are a liquid-agent formula for hanging a simple flexible LED screen on a wall, and a laminated structure. The structure comprises a flexible transparent substrate, wherein PVB layers are fixedly connected to both a left side face and a right side face of the flexible transparent substrate, and symmetrical LED lamps are fixedly embedded in an inner wall of each PVB layer; two copper electrode layers are fixedly embedded in both the left side face and the right side face of the flexible transparent substrate; the outer surface of each copper electrode layer is fixedly connected to the LED lamps by means of tin immersion layers; and the side faces of the two PVB layers that are away from each other are bonded with glass by means of a gel layer and a liquid agent. According to the present application, a simpler wall hanging means is realized, the use of materials is reduced, a vacuum hot pressing technique does not need to be used, the advantages of reworking and ensuring a high yield can also be achieved, and by means of the formula, a flexible LED screen is tightly attached after being hung on a wall and is free of bubbles, such that the problems in the current technology whereby a flexible LED screen being disposed in dual-laminated glass not only adds one more procedure, same also cannot be repaired if there are any issues therewith in the future are solved.

Description

A simple flexible LED screen on the wall potion formula and stack structure

This application claims the priority of the Chinese patent application submitted to the China Patent Office on November 11, 2021, with the application number 202111333083.2. The contents are incorporated by reference in this application.

technical field

The present application relates to the technical field of flexible LED screens, in particular to a simple liquid medicine formula and a stacked structure on the wall of a flexible LED screen.

Background technique

LED/MiniLED/Micro-LED/OLED are currently relatively new display module technologies, and are even used in applications such as backlighting and lighting. For backlight modules and self-luminous display modules, and full-color can be used as a replacement for LCM color filters or direct-lit backlight modules, because the application on the display screen has smaller pitch, higher contrast and higher resolution The advantage of high efficiency, in the application of LED backlight, it has the added value advantages of more partition adjustment and high contrast closer to self-illumination. In the future, it will be able to expand the application field to outdoor large-size display screens, mobile phones, TVs, car panels and gaming notebooks etc. It is estimated that there will be explosive breakthroughs in the market demand for 75-inch LCD panels, 5-inch smart phones and LED displays. Judging from such high market demand and advantages, the possibility of developing in the direction of flexibility will be greatly increased. At present, the research topics of major manufacturers are currently mainly glass for double light-transmitting and transparent substrates, and flexible optical-grade plastic substrates are prone to reflow of Mini LED chips, because the reflow temperature is too high to cause the substrate to shrink or shrink. out of shape.

The industry has also begun to move towards a low-temperature reflow process of 100-150 degrees Celsius. Therefore, it is very important to develop this type of flexible optical-grade plastic substrate to match the transparent glass material of the mini LED transparent display in the entire process. In addition, it is very important to use high conductivity Copper is used as a wire, which is particularly advantageous for electronic transmission, but after all, copper wire is completely shading. If you can design a copper wire that cannot be seen, it will increase the advantage of transparency. How to attach a flexible screen to glass or other carrier boards In fact, the current known technology is to install it in the double laminated glass, but this not only adds an additional process, but also in case of problems in the future, there will be problems that cannot be repaired. Most of the glue used in the known technology is polymer. For vinyl butyral ester and ethylene-vinyl acetate copolymer, the surface of PVB and EVA glue needs to be extruded out of the bubble discharge tank first, and then use vacuum hot pressing technology to stick the glue to the flexible transparent display module and glass. Therefore, it is necessary to improve the To solve the above problems and achieve a simpler way of mounting on the wall, reduce the use of materials, and do not need to use vacuum hot pressing technology, and can be reworked and ensure high yield. This application will provide a simple liquid medicine formula and stacking design for the flexible LED screen on the wall.

technical problem

The main purpose of this application is to propose a simple liquid medicine formula for flexible LED screens on the wall, aiming to solve the problem that the current technology is to use it in double-folded glass, but this is not only an additional process, but also in case of problems in the future After that, there will be problems that cannot be repaired.

technical solution

In order to achieve the above purpose, the application provides a simple flexible LED screen on the wall liquid medicine formula, the liquid medicine formula includes: 60-90 parts of the first solvent, 8-15 parts of the second solvent, 0.5-1 parts of thickening thixotropic agent 4-7 parts of the first polymer binder, 2-4 parts of the second polymer binder, 0.1-0.3 parts of thermosetting agent, 0.1 part of plasticizer, 0.1 part of dispersant and 0.1 part of defoamer.

Preferably, the first polymer binder is PVB or EVA or TPU or TPE.

Preferably, the second polymer binder is acrylic resin or phenolic resin or low molecular weight epoxy resin or high molecular weight epoxy resin or polyurethane resin or alkyd resin or melamine resin.

Preferably, the thermal curing agent is dibenzoyl peroxide or azobisisobutyronitrile or azobisisovaleronitrile or azobisisoheptanonitrile.

Preferably, the plasticizer is phthalic acid or aliphatic diester or dialkyl adipate or dialkyl sebacate.

Preferably, the dispersant is BYK ANTI-TERRA 210 with multifunctional groups.

Preferably, the defoamer is an organic defoamer BYK-066N.

Preferably, the first solvent is an alcohol solvent or a ketone or haloalkane or alcohol ether solvent.

Preferably, the second solvent is an aromatic solvent or an ester solvent.

A simple laminated structure of liquid medicine formula on the wall of a flexible LED screen, including a flexible transparent substrate, the left and right sides of the flexible transparent substrate are fixedly connected with PVB layers, and the inner walls of each of the PVB layers are fixedly inlaid with corresponding Symmetrical LED lamps, the left and right sides of the flexible transparent substrate are fixedly inlaid with two sets of copper electrode layers, the outer surface of each set of copper electrode layers is fixedly connected to the LED lamp through an immersion tin layer, and the two PVB The sides of the layers facing away from each other are bonded with glass through the gel layer and the liquid medicine.

Beneficial effect

This application has the advantages of realizing a simpler way of mounting on the wall, reducing the use of materials, and does not need to use vacuum hot pressing technology. The most advanced technology is to install it in the double-layer glass, but this not only adds an additional process, but also will cause problems that cannot be repaired if there is a problem in the future.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present application.

Figure 2 is an overlapping view of the position of the double-sided lamp bead in the structure of the present application.

Figure 3 is a staggered diagram of the position of the double-sided lamp bead in the structure of the present application.

Fig. 4 is a diagram showing the application steps of the structural potion of the present application.

Fig. 5 is a drawing of the adhesive structure of the flexible transparent substrate and the glass of the present application.

Figure 6 is a volatilization diagram of the structural medicine of the present application.

In the figure: 1. PVB layer; 2. Flexible transparent substrate; 3. Copper electrode layer; 4. LED lamp; 5. Glass; 6. Immersion tin layer.

Embodiments of the present invention

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

This application provides a simple flexible LED screen wall potion formula and stack structure as shown in Figure 1-6, including a flexible transparent substrate 2, the left and right sides of the flexible transparent substrate 2 are fixedly connected with PVB layer 1, The inner wall of each PVB layer 1 is fixedly inlaid with symmetrical LED lamps 4, and the left and right sides of the flexible transparent substrate 2 are fixedly inlaid with two sets of copper electrode layers 3, and the outer surface of each set of copper electrode layers 3 is made by immersion tin The layer 6 is fixedly connected with the LED lamp 4 , and the sides of the two PVB layers 1 away from each other are bonded with glass 5 through the gel layer and liquid medicine.

The potion formula includes: 60-90 parts of the first solvent, 8-15 parts of the second solvent, 0.5-1 part of the thickening thixotropic agent, 4-7 parts of the first polymer binder, and 2-4 parts of the second polymer binder 0.1-0.3 parts of thermal curing agent, 0.1 part of plasticizer, 0.1 part of dispersant and 0.1 part of defoamer.

In this embodiment, the potion formula includes: 80 parts of the first solvent, 10 parts of the second solvent, 0.5 parts of the thickening thixotropic agent, 6 parts of the first polymer binder, 3 parts of the second polymer binder, heat-cured 0.2 part of agent, 0.1 part of plasticizer, 0.1 part of dispersant and 0.1 part of defoamer.

In this embodiment, the function of the first solvent is to dissolve the polymer binder, which can be an alcohol solvent, such as: methanol, ethanol, n-propanol, isopropanol, n-pentanol, benzyl alcohol, n-butanol, Diols, methoxypropanol, ethoxypropanol and diacetone alcohol, etc.; ketones, such as methyl ethyl ketone, cyclohexanone and acetone, etc.; halogenated alkanes, such as methylene chloride and chloroform; alcohol ether solvents, such as propylene glycol methyl ether , propylene glycol methyl ether, propylene glycol butyl ether, propylene glycol pentyl ether, and aromatic solvents. The function of the second solvent is to swell the polymer binder and assist the dissolution performance of the first solvent. Among them, aromatic solvents such as benzene and toluene can be used and xylene, etc.; or ester solvents, such as: methyl acetate, ethyl acetate, butyl acetate and propylene glycol methyl ether acetate, etc.; or tetrahydrofuran, dioxane, dichloromethane, dichloroethane, trichloro High molecular organic solvents such as methane, carbon tetraoxide and dimethylformamide, the thickening thixotropic agent function is to increase the viscosity and is suitable for the brushing process, among them, it can be vapor-deposited silica sol, modified urea or polyhydroxycarboxylate esters.

In this embodiment, the function of the first polymer adhesive is to enhance the adhesion between the transparent display module and the object to be attached. The object to be attached can be glass, acrylic board, wall or steel plate, wherein the first polymer adhesive It can be PVB, high acetalization PVB, EVA, TPU or TPE; the function of the second polymer binder is similar to that of the first polymer binder, but it can make up for the insufficient cohesive force of the first polymer binder for modification , can be acrylic resin, phenolic resin, low molecular weight epoxy resin, high molecular weight epoxy resin, polyurethane resin, alkyd resin or melamine resin.

In this embodiment, the function of the thermal curing agent is to increase the adhesion with the object to be stuck and the structural properties of the second polymer binder, which can be dibenzoyl peroxide, azobisisobutyronitrile, azobisisobutyronitrile Valeronitrile, azobisisoheptanoylnitrile, azobiscyclohexylcarbonitrile, ditetradecyl peroxydicarbonate, dilauroyl peroxide, lauryl peroxide, or decanoyl peroxide.

In this embodiment, the function of the plasticizer is to make the flexibility of the material more conducive to subsequent processing, reduce the glass transition temperature (Tg) of the resin, reduce the temperature of the heat seal, maintain low temperature flexibility, etc., can be phthalic acid (e.g. diethyloctyl phthalate), aliphatic diesters (e.g. triethylene glycol or tetraethylene glycol), dialkyl adipate, dialkyl sebacate, triorganic phosphate Or tri-organic phosphite.

In this embodiment, the function of the dispersant is to keep the polymer binder and the solid thixotropic agent in the solvent, and the function of the defoamer is to reduce the essence of the potion or the bubbles generated when it is applied on the wall, so that there will be no bubbles after the product is applied to the wall. Air bubbles can be used to avoid affecting the appearance of the product after being applied to the wall. It can be BYK ANTI-TERRA 210 with multifunctional groups.

In this embodiment, the liquid medicine batching method is as follows.

Ingredients method 1: first slowly add the first polymer binder into the first solvent during the stirring process, after the first polymer binder is swelled, then add the second solvent to dissolve it; then slowly add the second polymer binder while stirring The binder makes it dissolve, and at this time, the dissolution time can be shortened by raising the temperature; using this dissolution method, the formation of agglomerated PVB can be avoided, and the dissolution speed can be accelerated.

Generally, the ratio of aromatic solvents to alcohol solvents is 60/40-40/60, and a low-viscosity PVB solution can be prepared. The solvent composition contains 2-3 wt% of water, which can increase the hydrogen bond strength of alcohol solvents and help PVB solubility.

The second batching method: slowly add the first polymer binder into the first solvent during the stirring process, and wait for the first polymer binder to swell.

Slowly pour the second solvent into the second polymer binder during the stirring process; then mix it with the above-mentioned first solvent to swell the first polymer binder. At this time, the dissolution time can be shortened by raising the temperature; using this dissolution method can avoid Agglomerates PVB, thus speeding up the dissolution rate.

Generally, the ratio of aromatic solvents to alcohol solvents is 60/40-40/60, and a low-viscosity PVB solution can be prepared. The solvent composition contains 2-3 wt% of water, which can increase the hydrogen bond strength of alcohol solvents and help PVB solubility.

The table below shows the potion ratio.

.

The working principle of this application: This application is a simple flexible LED screen on the wall of the potion formula and superimposed structure. First, the potion is attached to the glass by smearing or spraying, and the flexible transparent display module is directly attached and the potion is smeared. On the glass surface of the glass, the potion will slightly dissolve the PVB adhesive layer into a gel state. At this time, it is a pseudo-adhesion state, that is, the initial wall-mounting operation is completed. The solvent in the potion slowly evaporates from the side, and the gel layer becomes more and more Thin, that is to complete the work on the wall.

Finally, it should be noted that: the above is only a preferred embodiment of the application, and is not intended to limit the application. Although the application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still The technical solutions recorded in the foregoing embodiments may be modified, or some of the technical features may be replaced by equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included in the Within the protection scope of this application.

Claims (10)

1. A simple and flexible LED screen-mounted potion formula, characterized in that: the potion formula includes: 60-90 parts of the first solvent, 8-15 parts of the second solvent, 0.5-1 part of the thickening thixotropic agent, the first 4-7 parts of polymer binder, 2-4 parts of second polymer binder, 0.1-0.3 part of thermosetting agent, 0.1 part of plasticizer, 0.1 part of dispersant and 0.1 part of defoamer.
2. According to claim 1, a simple flexible LED screen wall potion formulation, characterized in that: the first polymer binder is PVB or EVA or TPU or TPE.
3. The liquid medicine formula for a simple flexible LED screen wall according to claim 1, characterized in that: the second polymer binder is acrylic resin or phenolic resin or low molecular weight epoxy resin or high molecular weight epoxy resin resin or polyurethane resin or alkyd resin or melamine resin.
4. The liquid medicine formula for a simple flexible LED screen wall according to claim 1, wherein the thermosetting agent is dibenzoyl peroxide or azobisisobutyronitrile or azobisisovaleronitrile or Azobisisoheptanonitrile.
5. The liquid medicine formula for a simple flexible LED screen wall according to claim 1, wherein the plasticizer is phthalic acid or aliphatic diester or dialkyl adipate or decane acid dialkyl esters.
6. The liquid medicine formula for a simple flexible LED screen wall according to claim 1, wherein the dispersant is BYK with multifunctional groups ANTI-TERRA 210.
7. The liquid medicine formula for a simple flexible LED screen wall according to claim 1, wherein the defoamer is an organic defoamer BYK-066N.
8. A simple flexible LED screen-on-wall liquid medicine formula according to claim 1, characterized in that: the first solvent is an alcohol solvent or a ketone or a haloalkane or an alcohol ether solvent.
9. The liquid medicine formula for a simple flexible LED screen wall according to claim 1, wherein the second solvent is an aromatic solvent or an ester solvent.
10. A laminated structure comprising a simple flexible LED screen on-wall liquid medicine formula according to any one of claims 1-9, including a flexible transparent substrate (2), characterized in that: the left and right sides of the flexible transparent substrate (2) Both sides are fixedly connected with PVB layers (1), and the inner wall of each PVB layer (1) is fixedly inlaid with symmetrical LED lamps (4), and the left and right sides of the flexible transparent substrate (2) are fixed Two sets of copper electrode layers (3) are inlaid, and the outer surface of each set of copper electrode layers (3) is fixedly connected to the LED lamp (4) through an immersed tin layer (6), and the two PVB layers (1) The sides far away from each other are bonded with glass (5) through the gel layer and liquid medicine.